The system disclosed herein is directed to a plunger adapted for use with a protective sleeve for shielding contaminants from the plunger. In one example, a plunger has a handle having a first end and a second end. A flexible cup is coupled to the first end of the handle. The flexible cup has an interior surface and an exterior surface. An inlet is disposed on the exterior surface of the flexible cup. A through-hole is located in the flexible cup offset from the inlet. A connector is coupled to the inlet between the flexible cup and the handle. The connector is configured to join the first end of the handle to the flexible cup.

The present invention discloses a single-drive bidirectional-crawling pipe-cleaning robot, including a front body assembly, a transmission assembly, and a rear body assembly. The transmission assembly is driven by a single power source, and a transmission effect of a connecting rod mechanism, a gear mechanism, and an equal-dwell cam mechanism is used to implement alternate retraction and support of the front body assembly and the rear body assembly in a radial direction and a telescopic motion in an axial direction between the front body assembly and the rear body assembly and at the same time implement synchronous rotation of a dredging cutter head, so as to implement bidirectional crawling and pipe cleaning work of the robot along a pipe. The present invention is stable, reliable, compact, and practical, and implements single-drive bidirectional crawling and pipe cleaning in a pipe having a greatly changing pipe diameter, so that the obstacle negotiation performance and adaptability to pipe diameter changes of an in-pipe robot are effectively improved, the endurance of the in-pipe robot is improved, and practical engineering significance in cleaning of a horizontal pipe having a greatly changing pipe diameter is provided.

Methods and devices for the execution of core drillings in a material by a drilling unit, which makes use of a drill bit, and such drill bits that are made up of a hollow cylindrical core barrel, which has an end plate at its rear end and abrasion elements, which serve the abrasion of material, at the front end as well as at least two high-pressure jet nozzles, which can be connected with a high-pressure source of a blasting medium. The high-pressure jet nozzles are arranged on the inner surface of the core barrel and/or its end plate and are oriented into the inside of the core barrel. As a result of a combined forward motion and rotation of the drill bit, a drilling core is formed from which an abrasion takes place by means of the blasting medium, whereby overburden is removed from the drill bit.

The system disclosed herein is directed to a plunger having a protective sleeve for shielding contaminants from the plunger. The plunger includes a handle, and a flexible cup. The body further includes a tab, a shoulder region, a central portion, a first tail, and a second tail. An inlet is disposed on the external surface of the flexible cup. The inlet is coupled to a connector. A through-hole is disposed in the flexible cup or the handle. The through-hole is configured to receive the body of the protective sleeve by passing a portion of the body through an opening of the flexible cup.

The invention relates to a paw type quick guiding dredging device for household sewer pipe which includes a feeding air guiding tube, a micro air pump and a dredging member. One end of the feeding air guiding tube is a closed structure, and the other end is provided with a connecting sleeve. The dredging member includes an extended air guiding tube and a spherical airbag. One end of the extended air guiding tube is connected with the connecting sleeve. The inlet end of the spherical airbag is in communication with the other end of the extended air guiding tube. The outer surface of the spherical airbag is provided with a friction member which is used to clean the inner wall of sewage pipe. One end of the feeding air guiding tube close to the connecting sleeve is further provided with a sliding member for pulling the spherical airbag. The outer surface of the extended air guiding tube is hinged with a hooking member for hooking the blockage in the sewage pipe. The output end of the micro air pump is in communication with the end of the feeding air guiding tube away from the connecting sleeve. The paw type quick guiding dredging device for household sewer pipe can fully clean the dirt in the sewage pipe or block foreign matter without damaging the pipeline, which is greatly convenient for people's daily life.

The invention relates to the field of jet propulsion application, in particular to a jet propulsion pipeline decontamination machine, which includes a fuselage and a fixing frame provided on the left side of the fuselage. In the gear lever fixedly connected to the fuselage, four guide grooves opening outward are symmetrically distributed in the center of the end wall of the fixed frame, and left and right symmetrical moving blocks are slidably arranged in the guide groove. The moving block is provided with left and right threaded holes with reverse threads passing through the left and right, and the threaded holes are internally connected with threaded rods. The jet propelled pipeline decontamination machine provided by the present invention can realize the sludge in the pipeline. For cleaning, the equipment uses jet propelling equipment to drive the scraper to the depth of the pipeline. When it moves to the maximum limit, it drives the scraper to abut against the pipe wall, and then pulls the scraper to the outside of the pipe through the wire drawing device, thereby contaminating the inner wall of the pipe Mud scraping, the device of the invention is completely scraped, and the scraping force is large, which is more efficient.

A drain cleaning apparatus includes a handle and a clog-catching member detachably connected to the handle. Wings, barbs or hooks project radially from the clog-catching member. The wings, barbs or hooks provide an angled projection that catches and holds a clump of debris in a drain pipe for pulling the clump out and unclogging the drain. Different end tools can be removably connected to a clog-catching member or to a smooth extension member to provide multifunctionality. The handle, clog-catching members, smooth extension members and tools can be connected together using a quick-connect connector, such as a snap fastener, a keyhole fastener or a side-release buckle, or a threaded connector. In addition to drain cleaning, the apparatus can be fitted with tools such as a magnet, grabber, light, camera and/or video for retrieval of objects and inspection of a space that is difficult to view directly.

A drain un-clogging assembly for un-clogging a drain includes a handle and a rotation unit that is coupled to the handle. The rotation unit is extendable into a clogged drain. Additionally, the rotation unit is comprised of a flexible material to conform to curves in the clogged drain. The rotation unit rotates when the rotation unit is turned on to frictionally engage debris in the clogged drain. In this way the debris may be removed from the clogged drain without chemicals or a plumber.

A device for cleaning the internal surface of a pipe has a main pipe axis. The device further includes one or more generally tubular conduits, including a conduit wall, at least one of the or each tubular conduit including an inlet to receive pressurised gas into the tubular conduit. One or more nozzles is deployed around the outside of the or each tubular conduit, with the or each nozzle being in fluid connection with the tubular conduit. At least one nozzle is directed at least partially to direct fluid in a direction non-perpendicular to the main tubular conduit axis, with one or more spacer elements to hold the or each tubular conduit in spaced relationship to a pipe.

The cleaning device is for cleaning the inner surface of pipes. The method is for manufacturing the cleaning device and the use is of a vehicle anti-skid chain for cleaning the inner surface of a pipe. The cleaning device has a sleeve, to which are attached studded chains composed of steel links and surface hardened.