A coating booth (101) for elements to be coated. The coating booth (101) comprises a passage between opposing vertical sides (107a, 107b, 108a, 108b) through which elements to be coated are conveyed. There is an entrance (105) at one end of the passage and an exit (106) at the other end of the passage. The coating booth (101) comprises a conveyor line (102) for supporting said elements to be coated and configured to convey said elements from the entrance (105) to the exit (106) along a straight pathway, and, a suction system. The opposing sides of the channel are symmetrical about the pathway. Sets of spray guns (103a, 104a, 103b, 104b) for spraying coating powder at the elements are positioned symmetrically either side of the straight pathway. The suction system comprises vertical suction inlets (109a, 109b) mounted opposite one another on each opposing vertical side of the passage, the suction system being configured to provide equal amounts of suction through each of the opposing vertical suction inlets (109a, 109b).

A coating booth (101) for elements to be coated. The coating booth (101) comprises a passage between opposing vertical sides (107a, 107b, 108a, 108b) through which elements to be coated are conveyed. There is an entrance (105) at one end of the passage and an exit (106) at the other end of the passage. The coating booth (101) comprises a conveyor line (102) for supporting said elements to be coated and configured to convey said elements from the entrance (105) to the exit (106) along a straight pathway, and, a suction system. The opposing sides of the channel are symmetrical about the pathway. Sets of spray guns (103a, 104a, 103b, 104b) for spraying coating powder at the elements are positioned symmetrically either side of the straight pathway. The suction system comprises vertical suction inlets (109a, 109b) mounted opposite one another on each opposing vertical side of the passage, the suction system being configured to provide equal amounts of suction through each of the opposing vertical suction inlets (109a, 109b).

Described herein is a container suitable for cleaning metering valves of a metering system. The container can be mounted on a metering valve, includes a container opening, a container body, and a container base. The container has at least one nozzle, which is let into the container base, through which the container can be supplied with compressed air and/or through which a cleaning compound can be pumped into the container, and also has at least one outlet let into the container base. Also described herein are a use of the container for cleaning metering valves of a metering system, a metering valve on which a container is mounted, a metering system including at least one such metering valve, and a method for cleaning metering valves of a metering system, wherein the method includes cleaning at least one metering valve of a metering system using at least one container.

Described herein is a container suitable for cleaning metering valves of a metering system. The container can be mounted on a metering valve, includes a container opening, a container body, and a container base. The container has at least one nozzle, which is let into the container base, through which the container can be supplied with compressed air and/or through which a cleaning compound can be pumped into the container, and also has at least one outlet let into the container base. Also described herein are a use of the container for cleaning metering valves of a metering system, a metering valve on which a container is mounted, a metering system including at least one such metering valve, and a method for cleaning metering valves of a metering system, wherein the method includes cleaning at least one metering valve of a metering system using at least one container.

A cleaning apparatus for cleaning a nozzle of a liquid dispensing device is disclosed. The cleaning apparatus includes a base member supporting a receiving head including a receiving opening for receiving a portion of the nozzle to be cleaned, a gas inlet for receiving pressurized gas, and an outlet at the receiving head for applying pressurized gas to the nozzle for flushing the nozzle. The receiving opening can include a sealing edge for sealing the receiving head against the nozzle when the nozzle is received in the receiving opening. The cleaning apparatus can also include at least one of a discharge tube, a collection vessel and a filter element.

A cleaning apparatus for cleaning a nozzle of a liquid dispensing device is disclosed. The cleaning apparatus includes a base member supporting a receiving head including a receiving opening for receiving a portion of the nozzle to be cleaned, a gas inlet for receiving pressurized gas, and an outlet at the receiving head for applying pressurized gas to the nozzle for flushing the nozzle. The receiving opening can include a sealing edge for sealing the receiving head against the nozzle when the nozzle is received in the receiving opening. The cleaning apparatus can also include at least one of a discharge tube, a collection vessel and a filter element.

The invention relates to a spray pipe (1), in particular for a printing press roller cleaning device, wherein the spray pipe (1) extends at least in regions in a longitudinal direction and has a plurality of liquid discharge openings (5, 7, 11) which are formed in a wall of the spray pipe (1), wherein a first liquid discharge opening (5) extends with respect to a first direction and a second liquid discharge opening (7) adjacent to the first liquid discharge opening (5) extends in relation to a second direction, the second direction being different from the first direction in such a way that the direction vectors (6, 8) of the first and the second direction intersect in an atomizing region (10) which is spaced apart from the lateral surface (9) of the spray pipe (1).

A mixed jet descaling device axially and eccentrically arranged for the inner wall of a metal pipe comprises a support rod (1) arranged inside the metal pipe (100), the support rod being parallel to the central axis of the metal pipe, eccentrically arranged and not concentric with the central axis of the metal pipe; and at least two spray nozzle units (2, 2, 2) for spraying the mixed jet, the spray nozzle units being arranged from front to back along the length direction of the support rod. At least two mixed jet spray nozzles (21, 21, 21) are provided in each spray nozzle unit and uniformly arranged along the circumference of the support rod in such a manner that the mixed jet spray nozzles diverge towards periphery of the support rod with the axis of the support rod as the center. The mixed jet spray nozzles of the spray nozzle units arranged from front to back are staggered from front to back in the circumferential direction of the inner wall of the to-be-descaled metal pipe, thereby forming a mixed jet spray nozzle matrix and creating an effective descaling zone capable of completely covering the circumferential surface of the inner wall of the metal pipe. The descaling device can achieve continuous, high efficient, stable and environment-friendly descaling for the inner wall surfaces of cold-state metal pipes.

A mixed jet descaling device axially and eccentrically arranged for the inner wall of a metal pipe comprises a support rod (1) arranged inside the metal pipe (100), the support rod being parallel to the central axis of the metal pipe, eccentrically arranged and not concentric with the central axis of the metal pipe; and at least two spray nozzle units (2, 2, 2) for spraying the mixed jet, the spray nozzle units being arranged from front to back along the length direction of the support rod. At least two mixed jet spray nozzles (21, 21, 21) are provided in each spray nozzle unit and uniformly arranged along the circumference of the support rod in such a manner that the mixed jet spray nozzles diverge towards periphery of the support rod with the axis of the support rod as the center. The mixed jet spray nozzles of the spray nozzle units arranged from front to back are staggered from front to back in the circumferential direction of the inner wall of the to-be-descaled metal pipe, thereby forming a mixed jet spray nozzle matrix and creating an effective descaling zone capable of completely covering the circumferential surface of the inner wall of the metal pipe. The descaling device can achieve continuous, high efficient, stable and environment-friendly descaling for the inner wall surfaces of cold-state metal pipes.

A substrate processing apparatus according to an aspect of the present disclosure includes a substrate holder, a top plate portion, a gas supply unit, and an arm. The substrate holder holds a substrate. The top plate is installed to face the substrate held on the substrate holder, and has a through hole formed therethrough at a position facing the center of the substrate. The gas supply supplies an atmosphere adjustment gas to a space between the substrate holder and the top plate. The processing liquid nozzle ejects a liquid to the substrate. The arm holds the processing liquid nozzle and moves the processing liquid nozzle between a processing position where the processing liquid is ejected from the processing liquid nozzle through the through hole and a standby position outside the substrate.