Structured tee with wear pocket

Abstract

A hopper tee having a horizontal portion through which granular material is unloaded from a tank trailer or hopper car, the hopper tee integrally forms a vertical segment, that secures with the bottom of the hopper, to provide for unloading of granular material for usage or storage. The upper front portion of the tee, as it transitions from its vertical segment to the horizontal flow path has secured or cast therewith a ledge, that provides for accumulation of the unloading granular material therein, to function as a wear pad to resist against abrasion and accelerated wear out of the tee, at that location, during prolonged usage.

Claims

1. A structured hopper tee with a wear pocket, provided to resist abrasion within the hopper tee during an unloading of granular material through an outlet pipe during an unloading process, the structured hopper tee having a lower horizontal section through which granular material is unloaded, the tee having an upper vertical section having an inlet end having an outwardly extending flange portion into which granular material drops from a tank trailer or hopper into the tee during unloading of granular material, the upper vertical section being integral with the lower horizontal section of the tee and having an upper front section having a curved interior portion to facilitate downward flow of granular material, the curved interior portion is between the flange portion and the horizontal section of the tee, a ledge formed in the upper front section of the tee, where the upper front section transitions into the horizontal section, the ledge being horizontally aligned with the horizontal section of the tee and the ledge extending out from the horizontal section of the tee where the upper front section transitions into the horizontal section of the tee, the ledge provided for accumulation of granular material between the curved interior portion of the upper front section of the vertical section of the tee and upon the ledge to form a wear pad of captured granular material against which other granular material impinges as granular material is being unloaded and thereby prevents direct exposure of the curved interior portion of the upper front section of the vertical section of the tee with granular material being unloaded to resist and reduce any abrasion or wearout of the tee.

2. The structured hopper tee with a wear pocket of claim 1, wherein the ledge is cast in place internally of the structured hopper tee.

3. The structured hopper tee with a wear pocket of claim 1 wherein the ledge is design cut and welded in place within the structured hopper tee.

4. The structured hopper tee with a wear pocket of claim 1 wherein the ledge has a frontal edge.

5. The structured hopper tee with a wear pocket of claim 1 wherein the ledge has a frontal edge, having an arcuate configuration.

6. The structured hopper tee with a wear pocket of claim 1 wherein the ledge has a frontal edge with the frontal edge being beveled.

7. The structured hopper tee with a wear pocket of claim 1 wherein the ledge has a frontal edge with the frontal edge having a concave configuration.

8. The structured hopper tee with a wear pocket of claim 1, wherein the ledge has a frontal edge with the frontal edge having a beveled configuration.

9. The structured hopper tee with a wear pocket with wear pocket of claim 1 wherein the ledge has a frontal edge and the frontal edge has a straight configuration.

10. The structured hopper tee with a wear pocket of claim 1 wherein the ledge has a frontal edge with the frontal edge having a straight configuration and the frontal edge being beveled.

11. The structured hopper tee with a wear pocket of claim 1 wherein the ledge has a frontal edge with the frontal edge having a concave configuration and the frontal edge being beveled.

12. The structured hopper tee with a wear pocket of claim 1 wherein the horizontal section further comprises a bottom drop.

13. A structured hopper tee comprising: a horizontal longitudinal section having an inlet end and an outlet end; a vertical section integral with the horizontal longitudinal section, the vertical section having an inlet end having an outwardly extending flange portion, an upper front section having a curved interior portion to transition from the vertical section to the horizontal longitudinal section, the curved interior portion between the inlet end and the horizontal longitudinal section, a ledge formed in the upper front section of the tee, where the upper front section transitions into the horizontal longitudinal section, the ledge being horizontally aligned with the horizontal longitudinal section of the tee and the ledge extending out from the horizontal longitudinal section of the tee where the upper front section transitions into the horizontal longitudinal section of the tee, and the ledge forming a wear pocket into which material may be captured to form a wear pad against which other material may flow against to prevent exposure of the curved interior portion and prevent abrasion.

14. The structured hopper tee of claim 13 wherein the ledge comprises a frontal edge with the frontal edge having an arcuate configuration.

15. The structured hopper tee of claim 13 wherein the ledge comprises a frontal edge with the frontal edge having a straight configuration and the frontal edge being beveled.

16. The structured hopper tee of claim 13 wherein the ledge comprises a frontal edge with the frontal edge having a concave configuration.

17. A structured hopper tee comprising: a horizontal longitudinal section having an inlet end and an outlet end; a vertical section integral with the horizontal longitudinal section, the vertical section having an inlet end having an opening, an outwardly extending flange portion, an upper front section having a curved front interior to transition from the opening of the vertical section to the horizontal longitudinal section, the curved front interior between the flange portion and the horizontal longitudinal section, a ledge formed in the upper front section of the tee, the ledge being horizontally aligned with the horizontal longitudinal section of the tee and the ledge extending out from the horizontal longitudinal section of the tee where the curved front interior transitions into the horizontal longitudinal section of the tee, and the ledge and the curved front interior forming a wear pocket into which material may be captured to form a wear pad against which other material may flow against to prevent exposure of the curved front interior to abrasion.

18. The structured hopper tee of claim 17 wherein the ledge comprises a frontal edge with the frontal edge having an arcuate configuration.

19. The structured hopper tee of claim 17 wherein the ledge comprises a frontal edge with the frontal edge having a concave configuration.

20. The structured hopper tee of claim 17 wherein the ledge comprises a frontal edge with the frontal edge having a straight configuration.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In referring to the drawings,

[0027] FIG. 1 is a longitudinal sectional view through the hopper tee of this invention, showing the location of its integral ledge that forms a pocket in which product may accumulate and furnish a pad surface that resists against wear of the tee at that location;

[0028] FIG. 1A is a top view of the tee with wear pocket;

[0029] FIG. 1B is a sectional end view showing the location of the ledge being applied tangentially to the upper apex of the horizontal portion of the formed tee;

[0030] FIG. 2 is a longitudinal sectional view of a similar type tee, of the type that incorporates a bottom drop;

[0031] FIG. 2A is a top view of the tee with wear pocket;

[0032] FIG. 2B is a transverse sectional view through the tee showing the location of its integral ledge provided within the vertical portion of the formed tee;

[0033] FIG. 3 is a schematic of the material flow dropping down through the tee, filling the wear pocket as noted, and being picked up by the material flow passing through the outlet line and the horizontal portion of the tee during product unloading;

[0034] FIG. 4 discloses how material flow through the horizontal portion of the tee will have a tendency to slightly elevate at the location of its vertical conduit and therefore can bias unloading material against the curved portion of the tee, but which forms the wear pad of such material as can be noted;

[0035] FIG. 5 is a longitudinal sectional view of a similar type tee, wherein the transition between the vertical portion of the tee and the horizontal portion of the tee has a flattened configuration;

[0036] FIG. 6 is a sectional view taken along 6-6 of FIG. 1, showing that the ledge has an arcuate configuration, shaped in a concaved form;

[0037] FIG. 7 is an alternate embodiment of the ledge having a straight configuration upon it exposed edge; and

[0038] FIG. 8 is a sectional view relating to that taken along 6-6 of FIG. 1, but in this instance, shows the ledge having an arcuate configuration, but, of a convexed design.

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0039] In referring to the drawings, and in particular FIG. 1, therein can be seen the hopper tee 1 that incorporates its horizontal longitudinal section 2 which is essentially a horizontal conduit through which the bulk material 20 flows, as it is being moved by air pressure 22 through the outlet line (not shown) that connects with both ends of the tee 1, as can be understood. The vertical section 3 of the tee 1 is usually integrally cast when the tee 1 is formed, and includes an outwardly extending flange portion 4 which includes a series of apertures and allows for the tee 1 to be connected to the bottom of the hopper bin, to be unloaded, or to a butterfly valve, or a swing-away type of valve, as known in the art.

[0040] The essence of the current invention is the application of a ledge, as at 5, to the upper front portion of the tee, and this ledge can be integrally cast in place, or it can be welded in situ, as the tee is being formed. The front edge of the ledge may be beveled, as at 9.

[0041] As previously explained, the upper front portion of the tee 1, as at 6, includes a curved portion, and this is to help facilitate the downwardly flow of the unloading granular material 20, and it shifts forwardly by the air pressure 22 passing through the horizontal section 2 of the tee 1, so that the bulk material is thrust forwardly, during its movement, with least resistance. But, as previously explained, where more abrasive type of material is being unloaded, that material is thrust against that curved portion of the tee 1, as it drops and is moved forwardly, and acts as an abrasive against that part of the tee 1, which can through resistance eventually wear out, if not wear through, the tee 1 at that location. This leads to accelerated deterioration of the tee 1, and its need for replacement. This type of abrasion frequently occurs where abrasive type material is being unloaded, whether it be industrial granular material, such as sand, or industrial type sand that may be used in chemical operations, or even some granular type food products that are conveyed by tank trailers, or hopper cars, and which are unloaded in a similar fashion, through a series of inline tees, and the outlet pipes, subject to the pressurized airflow.

[0042] The ledge 5 as noted and as can be seen in FIGS. 1A and 1B, may undertake an arcuate type shape, and it is either cast along the interior walls of the vertical portion 3 of the tee 1, where it transitions into the horizontal section 2, generally at that location as noted at 7. As noted, the ledge 5 is of relatively shallow shape, but is sufficient to allow for the accumulation of the granular material between its upper surface, and the inner arcuate portion of the front of the tee, as at the curved portion of the upper front portion 6, with the accumulated product or granular material being shown at 8 and therein functioning as a formed wear pad, against which other granular material being unloaded will impinge, so that the granular material as it flows does not rub against the interior arcuate section of the pipe, but rather, acts or biases against the formed wear pad 8, as can be noted. Thus, abrasion does not occur to the tee 1 because the unloading granular material or product does not rub against the internal surface of the tee 1, at that location, but rather, biases against its own product, as can be seen.

[0043] As can be seen in FIGS. 2A and 2B, the ledge 5 either will be integrally cast within the tee forming that pocket surface along the interior of the tee, at that location, or the ledge 5 may be independently formed, if casting is difficult, and then welded into position to form its noted ledge, in the manner as shown and described for its usage with respect to FIG. 1. In this design, the ledge is formed as a concave, as noted at 5A.

[0044] As also noted in FIG. 1B, the ledge 5 is generally arranged and formed tangentially with the upper surface 9 of the horizontal section 2, and it mates essentially all the way around the circumference, from side to side, at that region of the juncture between the arcuate portion of the vertical section 3 of the tee 1, as it transitions into the upper horizontal wall 10 of the tee 1, as can be noted.

[0045] FIGS. 2, 2A, and 2B, show a similar type construction for the formed tee 11 and its ledge 12 also as either integrally cast or welded in place, to the vertical arcuate section 13 of the formed tee, similar to that for the structured tee as previously described with regard to FIG. 1. In this instance, this is a bottom drop tee, as known in the art, otherwise the structure of the tee is similar to that as previously described, and which incorporates the sand wear pocket 14 which fills up with the sand or other granular material being unloaded, to form that shown wear pad, to substantially reduce the abrasive wear that occurs at that location of the tee, as the granular material is being unloaded.

[0046] FIG. 3 shows how the material 20 flows dropping from the bin of a tank trailer and falls downwardly and is entrained within the air and material 22 flowing and passing through the horizontal portion of the same tee 1, filling the ledge 5 and wear pad 8 provided therein, to achieve the benefits and results of this invention, which is to minimize wear of the arcuate portion of the tee 1 at the location of said pad 8.

[0047] FIG. 4 provides a schematic to show how the air and material 22 flowing through a tee 1, along the outlet line, has a tendency to rise up against the internal arcuate portion of the tee 1, to fill in above its ledge and to form a wear pad to resist against premature abrasion.

[0048] That portion of the tee 1, where it transitions between its vertical section 3 to its horizontal section 2, and as previously described as a curved portion, in actuality, is a contoured part that may be formed as arcuate, or convexed, or it may be slightly concaved, or it may be simply a flat surface that transitions between the vertical to the horizontal part of the tee 1 at that location. Any one of these shapes can comprise the contour for the tee 1 where it transitions from its vertical section 3 to the horizontal section 2 in order to facilitate its unloading of the granular material.

[0049] As can also be seen in FIGS. 1, 2, 6, and 7, the ledge 5, as cast or welded in place, at its frontal edge 5a, may be formed of a concaved shape, as aforesaid, and as shown in FIG. 7, may be formed as a straight configuration 5b, or as shown in FIG. 8, may even be formed slightly convex, at 5c, in design. The object is to catch and collect the granular material as it flows through the tee, whether it is dropped vertically through the vertical section, or flows through its horizontal longitudinal section 2, as previously explained with respect to FIGS. 3 and 4.

[0050] Variations or modifications to the subject matter of this invention may occur to those skilled in the art upon review of the disclosure as provided herein. Such variations, if within the spirit of this invention, are intended to be encompassed within the scope of any claims to patent protection issuing herein. The description of the preferred embodiment of this invention, and its disclosure in the drawings, are set forth for illustrative purposes only.