Search

CN-224229314-U - Grease injection plug valve with sponge diversion trench

CN224229314UCN 224229314 UCN224229314 UCN 224229314UCN-224229314-U

Abstract

The utility model discloses a grease injection plug valve with a sponge diversion trench, and relates to the technical field of valve sealing. The grease injection valve comprises a valve body, a valve rod and a cock arranged in the valve body, wherein a flow guide channel consisting of an axial flow guide groove and an annular flow guide groove is formed in the inner wall of the valve body, elastic sponge is fixed in the groove through a dovetail buckle, and a grease injection valve on the side wall of the valve body is communicated with the flow guide groove through the grease injection channel. The axial diversion trenches are symmetrically distributed on two sides of the cock, the annular diversion trenches are arranged on the upper bottom surface and the lower bottom surface of the cock, and the protruding cambered surface of the elastic sponge is in interference fit with the cock. When the cock rotates, the compressed sponge releases the grease to the sealing surface, and when the cock is closed, the sponge rebounds to recover the residual grease. According to the utility model, the release and recovery of grease are adaptively regulated through the deformation of the elastic sponge, so that the problems of uneven accumulation of lubricating grease and medium pollution of the traditional plug valve are solved, and the structure is simple and reliable.

Inventors

  • PAN YINLONG
  • ZOU HAODA
  • QI YONGDONG

Assignees

  • 威腾阀门有限公司

Dates

Publication Date
20260512
Application Date
20250523

Claims (7)

  1. 1. The utility model provides a annotate fat plug valve with sponge guiding gutter, includes valve body (1), valve rod (2), cock (3) are located in the cock holding chamber of valve body (1) and are closely laminated with valve body (1) inner wall, valve rod (2) are connected in cock (3) top in order to drive its rotation, its characterized in that: A diversion channel (4) is formed in the inner wall of the plug accommodating cavity of the valve body (1), and an elastic sponge (5) in tight fit is filled in the diversion channel (4); The elastic sponge (5) is in contact with the outer wall of the cock (3) and forms interference fit with the outer wall of the cock (3); The side wall of the valve body (1) is provided with a grease injection valve (6), and the grease injection valve (6) is communicated with the flow guide channel (4) through a grease injection channel (7).
  2. 2. The fat injection plug valve with sponge diversion trench as set forth in claim 1, wherein: The diversion channel (4) comprises an axial diversion trench (411) and an annular diversion trench (421); The elastic sponge (5) comprises an axial grease brushing sponge (51) and a circumferential grease brushing sponge (52); the axial diversion trenches (411) are at least provided with one group, each group is two and symmetrically distributed on the inner walls of two sides of the plug accommodating cavity of the valve body (1) along the axial direction of the plug (3), and two ends of the axial diversion trenches (411) respectively correspond to the upper bottom surface and the lower bottom surface of the plug (3); the axial diversion trench (411) is filled with the axial grease brushing sponge (51) which is tightly matched with the axial diversion trench; The two annular guide grooves (421) are respectively arranged at the inner wall of the valve body (1) corresponding to the upper bottom surface and the lower bottom surface of the cock (3) along the circumferential direction of the cock accommodating cavity; the annular flow guiding groove (421) is filled with the annular grease brushing sponge (52) which is tightly matched with the annular flow guiding groove.
  3. 3. The fat injection plug valve with sponge diversion trench as set forth in claim 2, wherein: The bottom of the axial diversion trench (411) is provided with an axial dovetail locking groove (412), the back surface of the axial grease brushing sponge (51) is provided with an axial dovetail buckle (512) matched with the axial dovetail locking groove (412), and the axial grease brushing sponge (51) is clamped and fixed in the axial diversion trench (411) through the axial dovetail buckle (512) and the axial dovetail locking groove (412); The annular guiding gutter (421) tank bottom is equipped with annular forked tail shape locking groove (422), the back of annular brush fat sponge (52) be equipped with annular forked tail shape buckle (522) of annular forked tail shape locking groove (422) matching, annular brush fat sponge (52) are through annular forked tail shape buckle (522) with the joint of annular forked tail shape locking groove (422) is fixed in annular guiding gutter (421).
  4. 4. The fat injection plug valve with sponge diversion trench of claim 3, wherein: A convex axial grease brushing sponge cambered surface (511) is arranged on one side, close to the cock (3), of the axial grease brushing sponge (51), the axial grease brushing sponge cambered surface (511) is in contact with the outer surface of the cock (3) to form interference fit, and the interference fit amount is the thickness of the convex cambered surface; The annular grease brushing sponge (52) is provided with a raised annular grease brushing sponge cambered surface (521) at one side close to the cock (3), and the annular grease brushing sponge cambered surface (521) is in contact with the outer surface of the cock (3) to form interference fit, wherein the interference fit amount is the thickness of the raised cambered surface.
  5. 5. The fat injection plug valve with sponge diversion trench as set forth in claim 2, wherein: The grease injection valve (6) is arranged in at least one junction area of the annular diversion trench (421) and the axial diversion trench (411) on the side wall of the valve body (1).
  6. 6. The fat injection cock valve with the sponge flow guide groove of claim 5, wherein the fat injection valve (6) is arranged at the junction area of the annular flow guide groove (421) and the axial flow guide groove (411) corresponding to the upper bottom surface of the cock (3).
  7. 7. The fat injection plug valve with sponge diversion trench as set forth in claim 1, wherein: the cock (3) is of a truncated cone structure, the radius of the top surface of the cock is larger than that of the bottom surface, a circulation channel (31) matched with the valve body (1) is arranged in the middle of the cock, and elastic sealing rings (32) are arranged on the upper side and the lower side of the circulation channel (31).

Description

Grease injection plug valve with sponge diversion trench Technical Field The embodiment of the application relates to the technical field of valve sealing, in particular to a grease injection plug valve with a sponge diversion trench. Background The plug valve is used as an opening and closing control part widely used in a fluid pipeline, dynamic sealing between a valve core and a valve body depends on regular grease injection to maintain sealing performance, and the traditional grease injection mode generally uses a grease injection channel formed in the valve body to directly press grease into a sealing interface, and then uses rotation of the plug to smear the grease. However, in practical application, it is found that the injected grease is easy to accumulate locally on the inner wall of the valve body due to the centrifugal effect and the self-viscous characteristic of the grease in the rotation process of the cock, so that the grease coverage of the sealing surface is uneven. In particular, under the working condition of high temperature or high frequency operation, the wear of a sealing interface can be aggravated due to unbalanced grease distribution, the service life of the valve is shortened, and meanwhile, excessive injected residual grease can be mixed into a medium flow passage, so that hidden danger of product pollution or system blockage is caused. Traditional annotate fat structure lacks the dynamic regulation function to annotating fat volume, is difficult to adapt to the diffusion characteristic of different viscosity lubricating grease, and operating personnel often compensates uneven defect of distribution through increasing annotating fat frequency, and this not only causes the lubricating grease extravagant, still has secondary pollution risk in fields such as petrochemical industry, food to medium cleanliness requirement strict. Disclosure of utility model The application aims to provide a grease injection plug valve with a sponge diversion trench, so as to solve the problems of uneven lubrication distribution, grease waste and secondary pollution of the conventional grease injection plug valve. In order to achieve the technical purpose, the technical scheme adopted by the application is as follows: The utility model provides a annotate fat plug valve with sponge guiding gutter, including valve body, valve rod, cock, the cock is located the valve body cock and holds the chamber and closely laminate with the valve body inner wall, and the valve rod is connected in the cock top, drives the cock rotation. The inner wall of the valve body is provided with a flow guide channel, the flow guide channel is filled with elastic sponge in tight fit, the elastic sponge is in contact with the outer wall of the cock and forms interference fit with the outer wall of the cock, and the side wall of the valve body is also provided with a grease injection valve which is communicated with the flow guide channel through the grease injection channel. In the technical scheme, through the cooperation structure of guiding gutter and elastic sponge, the intercommunication design of annotating the fat passageway, directional transportation, dynamic storage and even coating of lubricating grease when the cock is rotatory can be realized, simultaneously through sponge strip elastic deformation and resilience characteristic automatically regulated grease release volume, the risk of residual grease entering medium runner is reduced. It can be understood that the elastic sponge is made of porous composite material, has the function of absorbing and storing lubricating grease, generates elastic deformation when being extruded by the cock, can release the stored lubricating grease, and can restore the original state through the shape memory property of the material after the pressure is relieved, and simultaneously generates negative pressure adsorption to adsorb the lubricating grease. The grease injection valve is a special device for injecting lubricating grease into the valve, and is provided with an oil injection hole at the center and a built-in one-way valve structure to ensure the one-way flow of the grease. The lubricating grease is a lubricating material with sealing, lubricating and protecting functions. The grease injection valve controls the grease to flow into the diversion channel on the inner wall of the valve body along the grease injection channel, the elastic sponge absorbs the grease injected by the grease injection valve and keeps a wetted state, and when the cock rotates, the elastic sponge is extruded by the outer wall of the cock, so that the grease is uniformly coated on the outer surface of the cock. Through the cooperation structure of the diversion channel and the elastic sea, the grease injection channel is combined with the communication design, so that the directional conveying, dynamic storage and uniform coating of grease can be realized when the cock rotates, meanwhile, the release am