CN116006698B

CN116006698B - Valve with multiple seal structure

Info

Publication number: CN116006698B
Application number: CN202310238279.6A
Authority: CN
Inventors: 何小兵; 张维军; 徐正桂; 徐永兰
Original assignee: Taixing Huangqiao General Machinery Co ltd
Current assignee: Taixing Huangqiao General Machinery Co ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-07-14
Anticipated expiration: 2043-03-14
Also published as: CN116006698A

Abstract

The invention discloses a valve with a multiple sealing structure, which relates to the technical field of valve sealing improvement and comprises a valve body, wherein flange plates are fixedly connected to two ends of the valve body, a stepped groove is formed in the top of the middle position of the valve body, an abutting plate is movably inserted into the stepped groove along the vertical direction, a circular cavity is formed in the side surface of the abutting plate, and a rotating shaft is rotatably connected to the top of the circular cavity. According to the invention, the expansion assembly is arranged on one side of the valve disc, and can expand the sealing ring sleeved on the expansion groove of the expansion block until the sealing ring is expanded to the outer peripheral wall of the valve disc, so that a worker can push the sealing ring from the expansion groove to the containing groove of the valve disc to finish the installation of the sealing ring, and the problem that when the diameter of the valve disc is large, the sealing ring needs to be expanded and stretched manually, and the sealing ring can be sleeved on the outer periphery of the valve disc, so that the work of sleeving the sealing ring on the containing cavity of the valve disc is time-consuming and labor-consuming, and the problem that the worker has great difficulty in the assembly work of the valve is solved.

Description

Valve with multiple seal structure

Technical Field

The invention relates to the technical field of valve sealing improvement, in particular to a valve with a multiple sealing structure.

Background

A valve is a mechanical device for controlling fluid flow and is generally composed of a valve body, a valve cover, a valve rod, a valve seat, a sealing ring and the like. The valve can open, close or regulate fluid in a pipeline, and is used for regulating parameters such as flow, pressure, temperature and the like so as to meet the requirements under different working conditions. Common valve types include ball valves, gate valves, stop valves, regulating valves, butterfly valves and the like, and the butterfly valves are control valves which take an axle center as a center and control fluid flow by rotating a disc, and mainly comprise valve bodies, valve discs, valve rods, sealing rings and the like.

In order to further improve the sealing performance of the valve disc in the prior art, a containing cavity is often formed in the side face of the valve disc, and a sealing ring is sleeved in the containing cavity of the valve disc, but when the diameter of the valve disc is large, the work of sleeving the sealing ring on the containing cavity of the valve disc is time-consuming and labor-consuming, and great difficulty is brought to the assembly work of a worker on the valve.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, in order to further improve the sealing performance of a valve disc, a containing cavity is usually formed in the side face of the valve disc, a sealing ring is sleeved in the containing cavity of the valve disc, but when the diameter of the valve disc is large, the sealing ring needs to be stretched by a human force to be stretched, and the sealing ring can be sleeved on the periphery of the valve disc, so that the work of sleeving the sealing ring on the containing cavity of the valve disc is time-consuming and labor-consuming, and great difficulty is brought to the assembly work of a worker on a valve.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a valve with multiple seal structure, includes the valve body, valve body both ends fixedly connected with ring flange, the ladder groove has been seted up at valve body intermediate position top, the ladder groove has inserted the butt joint board along vertical direction activity, circular cavity has been seted up to the butt joint board side, the butt joint board rotates at circular cavity top and is connected with the axis of rotation, axis of rotation bottom fixedly connected with butt joint piece, the butt joint piece adopts the bolt fastening to the butt joint seat, butt joint seat side fixed connection is at the valve disc side, the valve disc outer wall is provided with the lasso groove, the lasso groove endotheca is equipped with the sealing washer, the auxiliary valve disc cover has been seted up at butt joint seat side to the expansion subassembly of sealing washer, axis of rotation top fixedly connected with rocking wheel, the butt joint board top is provided with shaft seal subassembly at the axis top, the shaft seal subassembly includes shaft seal seat, sealing bolt, goes up the round cavity, the butt joint board has been seted up the holding groove at the round cavity top, holding groove bottom, the axis of rotation seat intermediate position has seted up the holding shaft hole, holding shaft hole side bottom has been seted up on the holding groove, holding groove and is equal to go up down holding groove and expansion piece, screw rod extension drive ring, extension piece, extension drive ring, extension to the drive rod, extension piece are connected to the length of extension screw rod, the drive rod, the extension is connected to the extension piece, the drive ring is connected to the extension to the screw rod is connected to the extension of expansion link, the screw, and the side surface of the valve disc is provided with limiting grooves with equal width on the sliding block.

Optionally, a spreading groove is formed in the top of the extension block, and one end, away from the driving ring, of the driving rod is rotatably connected to the bottom of the extension block.

Optionally, limit groove one end and valve disc lateral wall border position parallel and level, limit groove both sides face fixedly connected with barrier plate, two sets of the distance between the barrier plate equals the extension piece width.

Optionally, the fixed orifices have been seted up to holding tank both sides face symmetry, seal bolt has been inserted in the symmetry activity of shaft seal seat both ends, seal bolt diameter is the same with the fixed orifice diameter.

Compared with the prior art, the invention has the following advantages:

1. according to the invention, the expansion assembly is arranged on one side of the valve disc, and can expand the sealing ring sleeved on the expansion groove of the expansion block until the sealing ring is expanded to the outer peripheral wall of the valve disc, so that a worker can push the sealing ring from the expansion groove to the containing groove of the valve disc to finish the installation of the sealing ring, and the problem that when the diameter of the valve disc is large, the sealing ring needs to be expanded and stretched manually, and the sealing ring can be sleeved on the outer periphery of the valve disc, so that the work of sleeving the sealing ring on the containing cavity of the valve disc is time-consuming and labor-consuming, and the problem that the worker has great difficulty in the assembly work of the valve is solved.

2. The shaft seal component is arranged at the rotation position of the rotating shaft driving the valve disc to rotate and the butt plate, and the shaft seal component and the sealing ring sleeved on the valve disc can form multiple seals on the valve disc, so that the condition that the valve is leaked when being closed and the position of the rotating shaft is leaked is avoided.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic view of the structure of the abutment plate and the valve disc.

Fig. 3 is a schematic view of another view structure of fig. 2.

FIG. 4 is a schematic partial structural view of a valve disc and spreader assembly.

Fig. 5 is a partial structural view of the detachable joint plate of fig. 1.

Fig. 6 is a schematic diagram of the explosive structure of fig. 3.

FIG. 7 is a partial schematic view of a shaft seal assembly.

Fig. 8 is a schematic view of a partial structure of a spreader block.

In the figure: 1. a flange plate; 2. a valve body; 21. a stepped groove; 3. an abutting plate; 31. a circular cavity; 32. a fixing hole; 33. a lower containing groove; 34. a receiving groove; 35. an upper sealing ring; 4. a valve disc; 41. a butt joint seat; 42. a ferrule groove; 43. a limit groove; 5. a butt joint block; 51. a rotating shaft; 6. shaking wheel; 7. rong Zhoukong; 8. a shaft seal seat; 9. driving a screw; 10. a drive ring; 11. a driving rod; 12. a sealing bolt; 13. a blocking plate; 14. expanding the supporting blocks; 141. an extension block; 1410. expanding the groove; 142. a sliding block; 15. and an upper containing groove.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Referring to fig. 1-8, a valve with multiple sealing structure, including valve body 2, valve body 2 major structure is rectangular box and the circular pipe of butt joint of both ends thereof, and valve body 2 both ends fixedly connected with ring flange 1, ring flange 1 specifically dock to circular pipe one end, and ring flange 1 can make valve body 2 install on the pipeline, and ladder groove 21 has been seted up at valve body 2 intermediate position top, and ladder groove 21 has inserted butt joint board 3 along vertical direction activity, and butt joint board 3 side cross section projection is the T shape, and butt joint board 3 adopts hexagon socket head cap screw in to the ladder groove 21, and the mounting hole of corresponding position has been seted up at ladder groove 21 top.

The circular cavity 31 has been seted up to butt plate 3 side, and butt plate 3 rotates at circular cavity 31 top and is connected with axis of rotation 51, and axis of rotation 51 bottom fixedly connected with butt joint piece 5, butt joint piece 5 adopt the bolt fastening to dock on seat 41, dock seat 41 side fixed connection in valve disc 4 side, and circular cavity 31 is the same with valve disc 4 diameter, supplies to hold valve disc 4 rotation.

The top of the butt joint seat 41 is provided with a slot with the cross section of the butt joint block 5, and when the butt joint block 5 is inserted into the butt joint seat 41, the side surface of the butt joint seat 41 is screwed with a bolt along the vertical direction for relatively fixing the butt joint block 5 and the butt joint seat 41.

The outer wall of the valve disc 4 is provided with a ferrule groove 42, a sealing ring is sleeved in the ferrule groove 42, an expanding assembly for assisting the valve disc 4 to be sleeved with the sealing ring is arranged on the opposite side surface of the butt joint seat 41 of the valve disc 4, the expanding assembly comprises a driving screw 9, a driving ring 10, a driving rod 11 and an expanding block 14, and the driving screw 9 is screwed into the center of the valve disc 4.

The end of the outer wall of the driving screw 9 is rotationally connected with a driving ring 10, a driving rod 11 is circularly arranged on the outer wall of the driving ring 10, one end of the driving rod 11 is rotationally connected to the outer wall of the driving ring 10, the other end of the driving rod 11 is rotationally connected to a expanding and supporting block 14, and the driving screw 9 comprises a rod part with external threads and a circular head part.

In order to facilitate the rotation of the driving screw 9, the circular head of the driving screw 9 can be provided with an inner hexagonal groove, so that an operator can conveniently screw the driving screw 9 by using an inner hexagonal bolt, when the driving screw 9 is screwed onto the valve disc 4, the driving ring 10 pushes the expanding block 14 to transversely move along the limiting groove 43 towards a position far away from the center of the valve disc 4 through the driving rod 11, and therefore the sealing ring sleeved on the expanding block 14 is expanded.

The expanding support block 14 comprises an extending block 141 and a sliding block 142, the extending block 141 is fixedly connected with the side face of the sliding block 142, the length of the sliding block 142 is larger than that of the extending block 141, the side face of the valve disc 4 is provided with a limiting groove 43 with the same width in the sliding block 142, and one end of the limiting groove 43 is flush with the edge position of the side wall of the valve disc 4.

The two sides of the limiting groove 43 are fixedly connected with blocking plates 13, the distance between the two groups of blocking plates 13 is equal to the width of the extending block 141, the top of the extending block 141 is provided with a expanding groove 1410, one end of the driving rod 11, which is far away from the driving ring 10, is rotationally connected to the bottom of the extending block 141, the top of the rotating shaft 51 is fixedly connected with the rocking wheel 6, and particularly, the top of the rotating shaft 51 is screwed with a bolt so as to fix the rocking wheel 6 at the top of the rotating shaft 51.

The bearing seal component is arranged at the top of the rotating shaft 51 at the top of the abutting plate 3, the bearing seal component comprises a bearing seal seat 8, sealing bolts 12 and an upper sealing ring 35, the top of the abutting plate 3 is provided with a containing groove 34, two side faces of the containing groove 34 are symmetrically provided with fixing holes 32, internal threads are formed in the fixing holes 32, the sealing bolts 12 are symmetrically and movably inserted into two ends of the bearing seal seat 8, the diameters of the sealing bolts 12 are the same as those of the fixing holes 32, and when the sealing bolts 12 are screwed into the fixing holes 32, the bearing seal seat 8 can be fixed on the abutting plate 3.

The lower container 33 has been seted up to holding tank 34 bottom, shaft seal seat 8 intermediate position has seted up appearance shaft hole 7, hold shaft hole 7 side bottom and have seted up and hold the groove 15, go up the groove 15 and hold the groove 33 down and look down the projection size and equal to the size of last sealing washer 35 in overlook, when shaft seal seat 8 is fixed on butt plate 3, go up sealing washer 35 and arrange in between last groove 15 and the groove 33 down, go up sealing washer 35 and seal the rotation position of axis of rotation 51 in butt plate 3, prevent that axis of rotation 51 top rotation position from taking place the liquid leakage.

The valve sealing ring assembly steps of the invention are as follows:

the sealing ring is sleeved on the expanding groove 1410 on one side of the expanding block 14, the driving screw 9 is continuously rotated, the driving screw 9 drives the driving ring 10 to move towards the position close to the valve disc 4, the driving ring 10 pushes the expanding block 14 to move along the limiting groove 43 through the driving rod 11, the expanding block 14 is continuously far away from the center of the valve disc 4 at the moment, three groups of expanding blocks 14 are relatively continuously far away, so that the sealing ring is expanded, when the sealing ring is expanded to the position flush with the peripheral wall of the valve disc 4, the sealing ring is manually pushed to retreat from the expanding groove 1410, and finally the sealing ring enters the ferrule groove 42.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The utility model provides a valve with multiple seal structure, includes valve body (2), its characterized in that, valve body (2) both ends fixedly connected with ring flange (1), ladder groove (21) have been seted up at valve body (2) intermediate position top, ladder groove (21) have been followed the activity of vertical direction and have been inserted butt joint board (3), circular cavity (31) have been seted up to butt joint board (3) side, butt joint board (3) are connected with axis of rotation (51) in circular cavity (31) top rotation, axis of rotation (51) bottom fixedly connected with butt joint piece (5), butt joint piece (5) adopt the bolt fastening to butt joint seat (41) on, butt joint seat (41) side fixed connection is in valve disc (4) side, valve disc (4) outer wall is provided with lasso groove (42), lasso groove (42) endotheca is equipped with the sealing washer, expansion assembly that auxiliary (4) cover were established the sealing washer has been seted up to butt joint seat (41) opposite side, expansion assembly includes driving screw (9), driving ring (10), driving rod (11), expansion piece (14) are connected with on the driving screw (9) screw thread, driving screw (9) are connected to the screw thread center, the circular array of actuating ring (10) outer wall has actuating lever (11), actuating lever (11) one end rotates and is connected to actuating ring (10) outer wall, actuating lever (11) other end rotates and is connected to on expanding supporting block (14), expanding supporting block (14) are including extending piece (141), sliding block (142), extending piece (141) and sliding block (142) side fixed connection, sliding block (142) length is greater than extending piece (141) length, equidistant spacing groove (43) have been seted up in sliding block (142) in valve disc (4) side, axis of rotation (51) top fixedly connected with rocking wheel (6), butt joint board (3) top is provided with shaft seal subassembly in axis of rotation (51) top, shaft seal subassembly includes shaft seal seat (8), sealing bolt (12), goes up sealing ring (35), holding tank (34) have been seted up at butt joint board (3) top, holding tank (34) bottom has seted up down holding tank (33), shaft seal seat (8) intermediate position has been seted up holding shaft hole (62), top and have been equal to hold down in size (35) on projection groove (15) side.

2. A valve with multiple sealing structure according to claim 1, characterized in that the top of the extension block (141) is provided with a expanding groove (1410), and the end of the driving rod (11) far away from the driving ring (10) is rotatably connected to the bottom of the extension block (141).

3. The valve with the multiple sealing structure according to claim 1, wherein one end of the limiting groove (43) is flush with the edge position of the side wall of the valve disc (4), blocking plates (13) are fixedly connected to two side surfaces of the limiting groove (43), and the distance between two groups of blocking plates (13) is equal to the width of the extension block (141).

4. The valve with the multiple sealing structure according to claim 1, wherein the two side surfaces of the accommodating groove (34) are symmetrically provided with fixing holes (32), the two ends of the shaft seal seat (8) are symmetrically movably inserted with sealing bolts (12), and the diameters of the sealing bolts (12) are the same as those of the fixing holes (32).