3921 results about "Retaining ring" patented technology

A floating joint and retainer connection structure includes a hollow fixed retainer having one closed side formed with a through opening and radially extended sliding slot pairs; an adaptor joint having a pipe connecting and a joining section connected to the retainer and a male coupler, respectively; a first sliding member having an opening fitted on the pipe connecting section, a first slide movably engaged with the sliding slots, and a front guiding recess; a second sliding member having a bore fitted on the pipe connecting section and shaped for slidably engaging with the guiding recess; and a retaining ring fitted on the pipe connecting section and attached to the second sliding member to limit the first and second sliding members from moving axially. With the first and second sliding members, the adaptor joint can translate to correct a radial fit tolerance and be conveniently assembled to the fixed retainer.

The invention relates to the technical field of water treatment equipment, and particularly discloses intelligent dynamic water-saving two-stage reverse osmosis water treatment equipment which comprises a treatment pipe, the two ends of the treatment pipe are fixedly connected between two sections of water conveying pipes in a sealed mode through bolts, and the outer surface of the treatment pipe is fixedly sleeved with a baffle ring. According to the intelligent dynamic water-saving two-stage reverse osmosis water treatment equipment, along with continuous upward movement of a driving rod, a sealing disc is driven to move upwards along a sliding rod, so that the water pressure of a cavity above the sealing disc is increased, a reverse extrusion force is generated on a filter plate, and impurities blocked at the filter plate generate a reverse extrusion force; after the filtering disc is dredged, the pressure disc and the sealing disc are reset under the action of elastic force to enable the filtering disc to work again, so that the filtering disc is automatically dredged after the filtering disc is blocked in the water treatment process, and the working time of equipment is greatly prolonged; the problem of insufficient water treatment efficiency caused by frequent cleaning of equipment is avoided.

The embodiment of the utility model provides a polishing head and polishing equipment. The polishing head comprises a base, a polishing head and a driving device, the retaining ring is arranged below the base; the polishing head gas film is arranged on the base, is arranged on the inner side of the retaining ring and is used for fixedly holding the wafer; the retaining ring gas film is arranged on the inner side of the retaining ring and is arranged between the retaining ring and the polishing head gas film, the retaining ring gas film is in contact with the edge of the wafer when the retaining ring gas film is pressurized and expanded so as to apply acting force to the edge of the wafer, and the acting force forms radial clamping force and axial downward pressure on the edge of the wafer. Radial clamping force and axial downward pressure are applied to the edge of the wafer through the retaining ring gas film, the wafer can be clamped through the radial clamping force, the wafer is prevented from moving in the polishing process, and the risk of wafer sliding is reduced; the axial downward pressure can apply pressing force to the edge of the wafer in the wafer polishing process, the polishing effect of the edge of the wafer can be controlled more accurately, and the polishing consistency of the surface of the whole wafer is guaranteed.

The invention relates to the technical field of coating testing devices, and particularly discloses an induction cooker glass ceramic functional coating testing device which comprises a base and a detection box located on the base, a detection cavity is formed in the detection box, a testing table is arranged in the detection cavity, and the testing table comprises a testing execution mechanism and a testing placement seat; the test execution mechanism comprises a friction disc, an electromagnetic coil is arranged in the friction disc, and a groove which is spirally distributed is formed in the bottom of the friction disc; the test placement seat comprises a loading table of which the middle of the top is provided with a to-be-tested coating panel in a position corresponding to the friction disc, the periphery of the top of the loading table is provided with a convex check ring, the upper part of the convex check ring is provided with a nozzle corresponding to the to-be-tested coating panel, and the nozzle is communicated with a storage tank arranged at the bottom of the loading table through a pressurizing pipeline; a magnetorheological abrasive is stored in the storage tank; the device has the advantages of high test precision and real test simulation.

The invention discloses an integrated joint motor module and a robot. The joint motor module comprises an output mechanism used for outputting rotation power; the speed reduction and sensing mechanism is used for improving torque output and detecting output torque; the power mechanism is used for providing power; the control mechanism is used for controlling the power mechanism to work according to the position information, the rotating speed information and the output torque; the power mechanism comprises a motor rotor, a motor stator, a rotating shaft, a stator shell cover, a first bearing, a bearing pressing ring and an axial elastic deformation piece. The bearing pressing ring is arranged between the first bearing and the stator shell cover, and the axial elastic deformation piece is arranged between the bearing pressing ring and the stator shell cover; the control mechanism comprises an encoder rotor, an encoder stator and a driver. According to the motor module, the axial elastic deformation piece is arranged between the bearing pressing ring of the power mechanism and the stator shell cover, so that the relative position between the encoder rotor and the encoder stator below the stator shell cover is stable, and the size of the motor module is reduced.

The invention provides a steering wheel electric adjusting tubular column assembling and testing system. The steering wheel electric adjusting tubular column assembling system comprises a positioning mechanism, a bearing feeding mechanism, a check ring feeding device, a check ring distributing device and a press fitting mechanism. And the carrying robot is used for clamping the upper tubular column casing conveyed out from the interior of the equipment box body. And the positioning mechanism is used for positioning and pressing the upper tubular column casing. The bearing feeding mechanism is used for feeding the top bearing and conveying the top bearing to the positioning mechanism for fine positioning. The check ring feeding device is used for automatically feeding check rings. The check ring distributing device conveys check rings conveyed out of the check ring feeding device to the check ring distributing device for distributing. And the press-fitting mechanism is used for carrying out press-fitting operation on the conveyed opposite-vertex bearing and the retainer ring. Through cooperation of all the mechanisms, automation of assembly of the adjusting pipe column can be achieved, the time interval of component installation is shortened, the press-fitting process is rapid and coherent, and the large-scale and high-efficiency production requirements of the automobile manufacturing industry are met.

The invention discloses a new energy cable for power transmission, and relates to the technical field of cables, the new energy cable for power transmission comprises an anti-corrosion sleeve, a neck bush is installed in the anti-corrosion sleeve, a conductor is arranged in the neck bush, a sealing and butt joint mechanism is arranged on the outer side of the anti-corrosion sleeve, and the sealing and butt joint mechanism comprises a reinforcing ring sleeve. The device is scientific and reasonable in structure and safe and convenient to use, a sealing and butt joint mechanism is arranged, a positioning buckle is driven to move to the outer side of the reinforcing ring sleeve through traction of a traction baffle ring, and through cooperation of a positioning shaft seat, an anti-deviation supporting rod and an opening and closing sliding block, the anti-deviation supporting rod is fixed to the outer side of the anti-deviation supporting rod, and the anti-deviation supporting rod is fixed to the outer side of the anti-deviation supporting rod. The two positioning buckles are attached together in a sliding mode to form an annular buckle, the annular buckle is connected into the reinforcing ring sleeve in a sleeved mode, the splicing inserting rod is embedded into the positioning groove, and then the sealing buckle is pulled to move through cooperation of the limiting rotating cylinder, the telescopic sleeve rod and the positioning shaft base.

The invention provides a main shaft structure which comprises a pipeline disc, a rear end seat, a shaft core, a water retaining ring and a rear shaft core end cover, the rear end seat is located on the periphery of at least part of a shaft section of the shaft core, the pipeline disc and the rear end seat are arranged at intervals in the axial direction, and the water retaining ring is further arranged between the pipeline disc and the rear end seat. At least part of the structure of the water retaining ring is located on the periphery of at least part of the structure of the shaft core, the rear shaft core end cover is arranged at the axial upper end of the shaft core, a containing cavity is formed in the upper end of the rear shaft core end cover, a water outlet hole is formed in the water retaining ring, and the water outlet hole is located below the containing cavity and can be communicated with the containing cavity. Water in the containing cavity can be discharged out of the main shaft structure through the water outlet hole. Water can be effectively prevented from entering the motor at the lower end of the spindle structure, the waterproof sealing effect on the motor of the spindle structure is achieved, and the problem that in the prior art, water easily enters the motor of an electric spindle, and potential safety hazards are caused is solved.

The invention provides a shell assembly and electronic equipment. The shell assembly comprises an outer decoration part, an inner decoration part, a first sealing glue layer, a shell and a second sealing glue layer. The inner decorating part comprises an inner ring sealing ring, a baffle ring and an outer ring sealing ring. The annular inner wall of the through hole of the shell comprises an embedded annular part close to the center of the through hole and an exposed annular part far away from the center of the through hole and connected with the embedded annular part. The outer ring sealing ring comprises a first outer sealing interval ring, the first outer sealing interval ring extends to the exposed annular part of the shell, the second sealing glue layer comprises a first interval glue layer, and the first interval glue layer is connected between the first outer sealing interval ring of the outer ring sealing ring and the exposed annular part in a sealing mode. By extending the first outer sealing interval ring of the inner decorating part to the exposed annular part of the shell, an extended mounting space can be provided for a large-size camera, so that the mounting requirement of the large-size camera of an ultrathin waterproof mobile phone is met.

The invention discloses a chemical mechanical polishing and planarization system, which at least comprises a polishing head, and the polishing head comprises a polishing head body; a plurality of air holes are formed in the lower surface of the hard disc, and a third air cavity communicated with the air holes is formed in the hard disc; at least part of the elastic unit is of an annular structure, the elastic unit is connected with the polishing head body and the hard disc, and a second air cavity is defined by the polishing head body, the elastic unit and the hard disc; the retaining ring is positioned below the polishing head body; when the third air cavity is in a negative pressure state, the lower surface of the hard disc can make contact with and adsorb the wafer substrate, and the pressure in the second air cavity is controllable, so that the elastic unit is driven to flexibly move, the hard disc and the wafer substrate are assisted to float, and chemical mechanical polishing of the wafer substrate is achieved. According to the hard drive in the hard disc, the problem that when the flexible film drives the wafer substrate to be polished, under the severe polishing condition, the flexible film is pulled to cause fracture or elastic modulus change is solved, and the service life of the flexible piece is prolonged.

The invention provides a combustion-supporting air preheating device for an annealing furnace, and relates to the technical field of air preheating combustion-supporting equipment, the combustion-supporting air preheating device comprises a preheating box, and a plurality of rows of preheating pipes are fixedly connected in the preheating box; a threaded propeller shaft is rotationally arranged in the preheating box and close to the leeward side of the preheating pipe, and a longitudinal guide shaft is welded in parallel in the preheating box and close to the threaded propeller shaft; the preheating pipe is sleeved with a retaining ring in a sliding mode, a gear ring is rotationally installed on the retaining ring, a retaining ring is welded to the gear ring, a small annular steel wire brush and a large annular steel wire brush are fixed to the inner circumference and the outer circumference of the retaining ring respectively, and brush wires on the annular steel wire brush on the inner side are evenly distributed on the inner circumference of a supporting ring of the retaining ring. Brush wires on the annular steel wire brush on the outer side are uniformly distributed on the periphery of a supporting ring of the annular steel wire brush; according to the preheating device, the trouble that the preheating device needs to be greatly disassembled to expose the preheating pipe, and then the preheating pipe can be cleaned can be omitted, and operation and use are easy, convenient and efficient.

The invention provides an electrostatic chuck structure for semiconductor processing, which comprises a base, an adsorption electrode layer and a ceramic dielectric layer, and is characterized in that the adsorption electrode layer is arranged between the base and the ceramic dielectric layer; the check ring is fixedly mounted on the top edge of the ceramic dielectric layer; the air chamber is arranged in the ceramic dielectric layer, a plurality of air outlet holes are formed in the top of the air chamber in a communicating mode, the air outlet holes are evenly distributed in the top face of the ceramic dielectric layer, the air outlet holes are each connected with a boss in a matched mode, the bosses extend to the position above the ceramic dielectric layer, and the bosses are used for bearing a wafer; and the lifting mechanism is connected with the boss. Through the air chamber and the plurality of uniformly distributed air outlet holes arranged on the ceramic dielectric layer, after the wafer is subjected to electrostatic adsorption, air for heat dissipation and cooling is introduced into the air chamber through the air inlet pipe, the air is shunted to the plurality of air outlet holes from the air chamber, and blowing is directly provided for the bottom surface of the wafer through the air outlet holes, so that the heat dissipation effect is guaranteed.

According to the end cover assembly, the energy storage device and the electric equipment provided by the invention, laser can be prevented from easily entering the assembly gap between the pole and the welding ring, welding burst points caused by burning of the upper plastic and the sealing ring are avoided, and the welding yield of welding between the pole and the welding ring is improved. The end cover assembly comprises a cover body, a welding ring, a pole, upper plastic and a sealing ring, the cover body comprises a first surface and a second surface which are arranged oppositely, the cover body is provided with an assembly hole, and the assembly hole penetrates through the first surface and the second surface; the pole penetrates through the assembly hole, the welding ring is located on the side, away from the first surface, of the second surface and comprises a welding ring body and a baffle ring, the pole is sleeved with the welding ring body, and the baffle ring is connected to the side, facing the pole, of the welding ring and shields a gap between the welding ring body and the pole; the upper plastic penetrates through the assembly hole and is connected between the pole and the cover body; and the sealing ring is sleeved on the pole and is clamped between the cover body and the welding ring main body.

The utility model discloses a grinding mechanism of a sealing retaining ring automatic opening device, the grinding mechanism is arranged on the frame of the automatic opening device, and is characterized in that: it comprises a grinding positioning platform and a grinding assembly; the grinding positioning platform comprises a grinding base frame arranged on the frame and a grinding positioning plate arranged on the grinding base frame, the upper surface of the grinding positioning plate is provided with an annular grinding positioning groove for placing the retaining ring to be polished, and a notch is provided on the rear side wall of the grinding positioning plate so that the cutting part of the retaining ring to be polished is exposed to the outside of the grinding positioning plate; the grinding assembly comprises a grinding head group and a grinding feed group driving the grinding head group to move relative to the grinding positioning platform. The utility model can reduce labor costs and improve grinding efficiency.

The utility model discloses a wheel type probe sealing mechanism which comprises a wheel shaft (5) connected with a wheel hub (1), the wheel shaft (5) is of a split type structure and comprises an upper half shaft (51) and a lower half shaft (52) which are matched with each other, the two sides of the upper half shaft (51) are respectively provided with a group of upper screw holes (51a), and the two sides of the lower half shaft (52) are respectively provided with a group of lower screw holes (52a); a cross recess screw (8) is connected in the corresponding upper screw hole (51a) and the lower screw hole (52a), the upper half shaft (51) is fixedly connected with the lower half shaft (52) through the cross recess screw (8), and a framework sealing ring (6) and an oil seal check ring (7) are arranged between the inner end of the wheel shaft (5) and the hub (1) after the upper half shaft (51) and the lower half shaft (52) are combined. The hollow shaft has the advantages that threading of the hollow shaft is facilitated, sealing performance is improved, dismounting and mounting are facilitated, and sealing and rotating are both considered.

This invention relates to the field of rear drive axle assembly technology, and more particularly to an assembly fixture for a wire retaining ring for a rear drive axle half-shaft. The fixture includes an assembly sleeve containing a cylindrical wire retaining ring placement groove and a cylindrical clearance groove, the latter communicating with the bottom surface of the placement groove. During assembly, the wire retaining ring is first placed in the placement groove. Then, the assembly fixture with the wire retaining ring is aligned with the half-shaft end face. Next, the second end of the assembly sleeve is pressed or struck, causing the wire retaining ring and the assembly sleeve to expand outwards by the half-shaft. Finally, after the wire retaining ring moves into the half-shaft groove, it retracts and returns to its original position. Using this assembly fixture, the wire retaining ring only needs to expand to the outer diameter of the half-shaft to complete the assembly, effectively reducing the possibility of the wire retaining ring failing to retract and return to its original position, thus improving the assembly quality stability of the wire retaining ring.

The invention relates to a cold heading production method of a universal joint external spline sliding fork, which comprises the following steps of: cutting a raw material into a cylindrical blank, and performing cold extrusion diameter reduction to form a rod part, a transition circular truncated cone and a cylinder for manufacturing a spline; the fork-shaped part of the universal joint fork is upset through the working procedures of pre-forming, first-time forming of the fork part, second-time forming of the fork part, third-time forming of the fork part and the like, and spline forming of the spline shaft part and shaping and trimming of the fork-shaped part are completed through the cold upsetting finishing working procedure; and finally, the universal joint sliding yoke is machined to form a bearing hole and a check ring groove, and extrusion flashes and burrs generated in the extrusion production process are removed and polished. Compared with traditional hot forging machining, the machining method of the universal joint external spline sliding yoke saves energy consumption of heating forging through a cold forming mode, the needed external spline structure can be synchronously machined, the workload of machining is greatly reduced, raw materials are saved, and the mechanical strength and the surface quality of parts are improved.

The utility model discloses a device for reducing over-grinding of materials of a mining roller type comminutor, which belongs to the field of ore crushing and grinding processing and comprises a basic retaining ring component fixedly connected to the edge of a rotary millstone, and the basic retaining ring component and the rotary millstone are relatively static; the auxiliary material blocking ring assembly is fixedly connected to the inner wall of the middle shell, and the auxiliary material blocking ring assembly is arranged above the basic material blocking ring assembly; the auxiliary retaining ring assembly and the rotary grinding disc rotate relatively; the two auxiliary material blocking ring assemblies respectively extend to the far end of the rotary millstone along the near end of the grinding roller; a discharging opening is formed between the two auxiliary material blocking ring assemblies, and the discharging opening facilitates discharging of ground materials; according to the utility model, through the dynamic and static combined design of the double-layer retaining ring, and meanwhile, the notch is formed in the static retaining ring, so that materials which are not ground are blocked and conveyed to the grinding roller for grinding, and all the ground materials are discharged and sorted, and the problems of repeated grinding and excessive grinding of the materials are reduced.

The invention relates to the technical field of detection devices, in particular to a road maintenance ground permeability detection device which comprises a detection support, an inner enclosure, an outer enclosure and a check ring. The inner enclosure is arranged in the vertical direction and located at the lower end of the detection support, and a detection space is defined among the inner enclosure, the detection support and the ground. The outer enclosure is rotationally installed at the lower end of the check ring, and a smearing space is defined by the detection support, the inner enclosure, the outer enclosure and the check ring. According to the ground permeability detection device for road maintenance, the detection support, the inner enclosure, the outer enclosure and the check ring are arranged and matched, when a sealing material is smeared, an automatic smearing mode is adopted to replace manual smearing, the smearing area is large, the efficiency is high, and in the whole smearing process, the smearing efficiency is high; the detection space and the smearing space are separated from each other through the inner enclosure, so that the sealing material in the smearing space can be prevented from entering the detection space, and the accuracy of subsequent detection is improved.

A disc rotor machine for a motor vehicle drive is disclosed that includes a disc-shaped stator. The stator has a plurality of core segments-, which are distributed in a circumferential direction and are rigidly connected to one another by means of at least one retaining ring, and a plurality of coil windings each extending around a core segment. The disc rotor machine also comprises a rotor which is mounted rotatably relative to the stator, the rotor having a first rotor disc arranged adjacent to the stator towards a first axial side and a second rotor disc arranged adjacent to the stator towards a second axial side opposite the first axial side, which rotor discs can be driven by a plurality of coils of the stator which are distributed in a circumferential direction and include the core segments and coil windings. The disc rotor machine further comprises a cooling device which cools the coils during operation, the stator having a carrier wheel which accommodates the coil windings and is connected to the at least one retaining ring, the carrier wheel forming a cooling channel portion of the cooling device that directly accommodates at least one of the coil windings.

The invention provides a driving wheel mechanism and a substrate conveying device, the driving wheel mechanism comprises a plurality of driving wheel assemblies, each driving wheel assembly comprises a rotating shaft and a driving wheel connected with the rotating shaft, the plurality of rotating shafts are nested layer by layer in the radial direction and are coaxially arranged, and the plurality of driving wheels are stacked in the axial direction; a first groove is formed in the outer circumferential wall of a rotating shaft of at least one transmission wheel assembly, a second groove is formed in the inner circumferential wall of a transmission wheel of the other transmission wheel assembly adjacent to the transmission wheel assembly provided with the first groove, and the first groove and the second groove are opposite in the radial direction to jointly form an annular limiting space capable of being opened and closed. The rotary connecting piece comprises an outer ring and an inner ring capable of rotating relative to the outer ring; the rotary connecting piece is arranged in the annular limiting space capable of being opened and closed, the inner ring is arranged in the first groove, and the outer ring is arranged in the second groove, so that every two adjacent transmission wheel assemblies provided with the first groove and the second groove respectively can rotate relatively. According to the invention, additional positioning structures such as a shaft shoulder and a check ring required by the installation of a traditional bearing are avoided, and the axial and radial sizes are reduced.

The self-adjusting abrasive flow clamp is suitable for machining a tee joint through the abrasive flow technology and is characterized in that the self-adjusting abrasive flow clamp comprises a base, a baffle ring, a surrounding cylinder, a first arc-shaped bent pipe, a second arc-shaped bent pipe and a third arc-shaped bent pipe, opening structures are arranged at the two ends of the surrounding cylinder, a mounting hole is formed in the baffle ring, and an arc-shaped protrusion is arranged on the top face of the base; when abrasive particles enter through the third arc-shaped bent pipe, the abrasive materials flow out only through the first arc-shaped bent pipe; when the grinding materials are input through the groove, the grinding materials enter the tee joint through the second arc-shaped bent pipe and are output through the top end of the third arc-shaped bent pipe, the tee joint grinding efficiency is improved, and time consumption is reduced.

The invention provides an air spring upper supporting structure, an air spring and a vehicle, and belongs to the technical field of suspension systems. The scheme that the top rubber, the blocking cover and the check ring are arranged on the upper supporting body is achieved through the arrangement of the installation groove, the reliability of matching with the piston rod can be guaranteed, and the compactness of the upper supporting structure of the air spring can be improved. The threaded sleeve is arranged in the mounting hole, so that structural damage to the area where the mounting hole is located can be effectively avoided, and the service life of the upper supporting structure of the air spring is prolonged. By arranging the heat insulation pad, the problem that the whole air spring is seriously heated due to the fact that the upper supporting body absorbs excessive heat is solved, and the service life of a rubber part in the air spring is shortened. The arc-shaped flow guide faces are arranged at the corners of the first air channel and the second air channel, so that vortexes are avoided, friction is reduced, and the problem of abnormal sound generated by air flowing is solved. Double connection of the threads and the positioning pins is adopted between the mounting hole and the threaded sleeve, so that the anti-loosening strength and the torsional strength of the threaded sleeve are enhanced, and the threaded sleeve is prevented from loosening.

The utility model relates to the technical field of ball valves, in particular to a grease injection structure of a forged steel fixed ball valve, which comprises a main valve body, a ball body and a valve seat component, a first grease injection channel is arranged in the main valve body, a second grease injection channel is arranged in the valve seat component, and the first grease injection channel is communicated with the second grease injection channel; the second grease injection channel comprises an infusion section and a sealing section, an opening of the infusion section faces the sealing face of the ball body, an opening of the sealing section is communicated with the containing cavity channel, sealing rubber is arranged in the sealing section, the sealing rubber can slide in the sealing section under the pressure effect of a medium, and baffle rings are further arranged at the two ends of the sealing section. The baffle ring is used for limiting the sealing rubber to only slide in the sealing section, and the first grease injection channel communicates with the infusion section. Compared with a traditional operation mode that sealing grease is supplemented after shutdown, continuity of pipeline production operation can be guaranteed, the interval time of grease injection maintenance is remarkably prolonged, and the working intensity of operators is reduced.

The utility model relates to the technical field of turbine mechanical sealing, and discloses a double-end-face brush type-labyrinth combined sealing structure, which comprises a shaft sleeve connected with a rotor through a shaft sleeve fastening screw; a sealing seat; the double-end-face brush type sealing ring is fixedly arranged with the sealing seat through a brush ring set screw; the double-end-face brush type sealing ring comprises a first brush wire bundle, a front baffle, a first fusion welding area, a middle baffle, a second fusion welding area, a rear baffle and a second brush wire bundle. The labyrinth sealing ring is arranged on the back face of the double-end-face brush type sealing ring, an O-shaped ring is arranged between the labyrinth sealing ring and the sealing seat, the labyrinth sealing ring is fixed to the shell through a check ring, and the shell is connected with the sealing seat through a screw. The double-end-face brush type seal and the labyrinth seal are combined, the double-end-face brush type seal ring saves more materials and space compared with a conventional two-stage end face brush type seal in series connection, the throttling effect of the labyrinth seal plays an auxiliary sealing role, and therefore the sealing effect is better.

The utility model discloses a sand mill for ink, comprising a machine base, a grinding cylinder fixed on the machine base, a rotating shaft rotatably arranged in the grinding cylinder, a plurality of grinding discs spaced in parallel and fixed on the rotating shaft, a rotating device driving the rotating shaft to rotate relative to the grinding cylinder, a filter cylinder with one end fixed to the inner end wall of the grinding cylinder and surrounding the rotating shaft and the grinding disc, a plurality of filter holes spaced in parallel and evenly arranged on the side wall of the filter cylinder, an annular partition plate fixedly sleeved on the filter cylinder and fixedly connected to the inner wall of the grinding cylinder with an outer ring, a pair of retaining rings spaced in parallel and slidably sleeved on the filter cylinder, a plurality of connecting rods evenly surrounding the filter cylinder and fixedly connected to the two retaining rings at both ends, a sliding device driving the retaining ring to slide relative to the filter cylinder, and a feed pipe and a discharge pipe fixedly arranged on the outer wall of the grinding cylinder and communicating with the inside of the grinding cylinder. The utility model has the following advantages and effects: it can filter and screen ink raw materials of different coarseness and fineness, and the filter holes are not easy to be blocked.

The present invention discloses a sanitary check valve, which comprises a valve body. An outlet and an inlet which are communicated with each other are arranged on the valve body. A valve seat is arranged in the inlet, and a valve flap is arranged on the valve seat. A valve rod is fixedly connected to the valve flap. A support retaining ring is arranged in the outlet, and the inner hole of the support retaining ring is slidably connected with the valve rod. A return spring is arranged between the support retaining ring and the valve flap. A damping cylinder is fixedly arranged on the support retaining ring. Damping holes are uniformly distributed on the side wall of the damping cylinder. A liquid inlet through hole is arranged at the bottom of the damping cylinder, and a one-way liquid inlet valve is arranged on the liquid inlet through hole. A piston disc is arranged at the upper end of the valve rod, and the piston disc is slidably connected with the inner hole of the damping cylinder. When the valve flap is closed, the piston disc on the valve rod moves into the damping cylinder, and the medium in the damping cylinder is forced to be extruded through the damping holes on the side wall, playing a damping role on the piston disc, so that the valve flap achieves the effect of slow closing, reducing the impact force of the sealing surface of the valve flap on the sealing surface of the valve seat and reducing the occurrence of water hammer phenomenon.

The cleaning device for non-woven fabric processing comprises a cleaning box, a ventilator and a cleaning frame, the ventilator is arranged on one side of the cleaning box, a rotating motor is arranged in the middle of the lower bottom wall of the cleaning box, stirring blades are arranged on an output shaft of the rotating motor, and mounting frames are symmetrically arranged on the two sides of the upper end of the cleaning box. A lead screw is rotationally arranged in one set of mounting frames, a forward and reverse rotation motor is arranged at the upper end of each mounting frame, an output shaft of each forward and reverse rotation motor is connected with the upper end of the corresponding lead screw, a threaded block is in threaded connection with the corresponding lead screw, a lifting plate is mounted on the threaded blocks, and a rotary clamping ring is rotationally arranged in the lifting plate. The cleaning frame is detachably installed on the rotary clamping ring, and the lower end of the cleaning frame extends into the cleaning box. The non-woven fabric cleaning device relates to the technical field of cleaning equipment, non-woven fabric can be fully cleaned, the cleaned non-woven fabric can be rapidly dehydrated and dried, and convenience and high efficiency of non-woven fabric processing are improved.

The invention relates to a cutting tool for cutting out a section of a floor covering lying on a substrate, e.g. a carpet, vinyl or the like, with a torus-shaped holding ring 2 which can be placed on the floor covering and which defines an inner side of the holding ring, a blade holder 10 which can be inserted into this and is movable relative to the inner side of the holding ring and which is movable relative to the stationary holding ring 2 via an actuating element in order to carry out a cutting movement, wherein one or more blades 22, 22', 22'', 22''' can be or are fastened to the blade holder 10 in such a way that they cut into the floor covering when the cutting movement is carried out in order to cut out the section from the floor covering. In order to realize a particularly precise cutout, it is proposed that fixing means are provided to fix the retaining ring 2 in a desired position on the substrate, and that bearings 12, 12', 12'', 12'''; 13, 13', 13'', 13''' are arranged between the stationary knife holder 10 and the knife holder which is relatively movable thereto.