CN213298858U

CN213298858U - Stop valve

Info

Publication number: CN213298858U
Application number: CN202022224227.8U
Authority: CN
Inventors: 张文彬; 王敬
Original assignee: Taizhou Sujie Valve Co ltd
Current assignee: Taizhou Sujie Valve Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-05-28
Anticipated expiration: 2030-10-09

Abstract

The utility model provides a stop valve belongs to valve manufacturing technical field. It has solved the bulky scheduling problem of current stop valve. This stop valve includes the valve body, and the one end of valve body is connected with the first valve gap of coaxial setting, and the centre gripping is fixed with the baffle between valve body and the first valve gap, and the baffle has the round and crosses the water hole, is equipped with the water pipe of coaxial setting in the valve body, is equipped with the drive structure that drives water pipe axial displacement on the valve body, sees with axial projection direction, crosses the water hole and centers on the water pipe outer wall setting, is equipped with the seal structure who keeps both leakproofness throughout between water pipe and the valve body. The utility model has the advantages of small volume, convenient installation and arrangement, etc.

Description

Stop valve

Technical Field

The utility model belongs to the technical field of the valve is made, a stop valve is related to.

Background

The stop valve is also called as a stop valve and is a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak; the stop valve has the advantages of small friction force between sealing surfaces in the opening and closing processes, durability, small opening height, easiness in manufacturing, convenience in maintenance, suitability for medium and low pressure and suitability for high pressure.

For example, chinese patent literature discloses a stop valve [ application No.: 201120015867.6, respectively; authorization notice number: CN201925496U ], which comprises a valve body, a valve cover mounted on the valve body, a sealing port is provided in the valve body, the sealing port divides the inner cavity of the valve body into an inflow cavity and an outflow cavity, a valve rod passes through the valve cover, the outer end of the valve rod is fixedly connected with an opening member, the inner end of the valve rod is provided with a valve core, the valve core is connected with the valve rod through a thread, and the valve core is circumferentially fixed in the valve body, the main body of the valve core is located in the outflow cavity, and the valve core is provided with a sealing surface matched with the sealing port, when the opening member is rotated, the valve core can be driven to move up and down, so that the sealing surface controls the opening and closing of the sealing port, a guiding member for guiding the valve core is further provided between the valve.

The stop valve has the advantages that the stop valve plays a role in guiding the valve core through the guide piece, the working stability is good, but the valve rod and the valve core occupy most of the volume, so that the whole volume of the stop valve is large, and the stop valve is inconvenient to install and arrange.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a stop valve that small, the installation of being convenient for were arranged.

The purpose of the utility model can be realized by the following technical proposal: a stop valve comprises a valve body and is characterized in that one end of the valve body is connected with a first valve cover which is coaxially arranged, a baffle is fixedly clamped between the valve body and the first valve cover and is provided with a circle of water passing holes, a water passing pipe which is coaxially arranged is arranged in the valve body, a driving structure which drives the water passing pipe to axially displace is arranged on the valve body, the water passing holes are arranged around the outer wall of the water passing pipe when seen from the axial projection direction, and a sealing structure which always keeps the sealing performance of the water passing pipe and the valve body is arranged between the water passing pipe and the valve body.

In foretell a stop valve, drive structure include that the valve body top radially wears to be equipped with the pivot, pivot inner have the eccentric column of eccentric settings and axial evagination, the water pipe overcoat have and be cylindric a section of thick bamboo that rotates, the water pipe outer wall be equipped with the spacing subassembly spacing to a section of thick bamboo that rotates, the outer wall of a section of thick bamboo that rotates round annular groove has, the eccentric column be arranged in the annular groove.

In foretell stop valve, spacing subassembly include the radial evagination bulge loop that the water pipe outer wall has, the outer wall at water pipe middle part still inlay and be equipped with the snap ring, the snap ring supports towards the terminal surface that rotates a section of thick bamboo has and is annular backing plate, the water pipe overcoat have the spring that is located the backing plate and rotates between a section of thick bamboo, the spring provide elasticity and make to rotate a section of thick bamboo and have the trend of contradicting in the bulge loop all the time.

In the stop valve, the other end of the valve body is connected with a second valve cover, an annular abutting ring is arranged between the second valve cover and the rotating cylinder, and a first sealing ring sealed on the outer wall of the water passing pipe is embedded in the abutting ring.

In the stop valve, the sealing structure comprises a second sealing ring embedded in the inner wall of the valve body close to the baffle plate side, and the second sealing ring is always sealed on the outer wall of the water passing pipe when the water passing pipe is axially displaced. The sealing performance of the water passing pipe in the axial displacement process is guaranteed through the arrangement of the sealing ring II, and the leakage of a medium between the water passing pipe and the valve body is avoided.

In foretell stop valve, seal structure include that the valve body inner wall inlays and is equipped with O type circle and be annular sealing ring, O type circle and sealing ring be arranged in the same ring channel that the valve body inner wall has, during water pipe axial displacement, O type circle and sealing ring seal in the outer wall of water pipe all the time.

In foretell a stop valve, the baffle inlay towards the terminal surface of water pipe and be annular sealed the pad, sealed pad have towards the terminal surface of water pipe and be annular recess, the water pipe towards the tip inner wall of baffle for being the conical surface of flaring form.

In the stop valve, the inner wall of the first valve cover is embedded with a third sealing ring sealed in the valve body, a fourth sealing ring is arranged between the end part of the first valve cover and the valve body, and a fifth sealing ring is arranged between the second valve cover and the valve body. Therefore, the first valve cover and the second valve cover have good sealing performance with the valve body, and leakage is avoided.

In foretell stop valve, valve body threaded connection have a valve barrel, valve barrel and valve body top between be equipped with and compress tightly the gasket, the pivot axial wear to locate in the valve barrel, the pivot outer wall inlay and be equipped with sealed six in the sealing washer of valve barrel, valve barrel top inner wall have the fender shoulder that blocks the pivot, fender shoulder and pivot between be equipped with the cushion. Therefore, the rotating shaft rotates smoothly, the sealing performance is good, and leakage is avoided.

Compared with the prior art, the stop valve has the advantages of small volume, convenience in installation and arrangement, good working stability, good sealing property and long service life.

Drawings

Fig. 1 is a perspective view of the shutoff valve.

Fig. 2 is a structural sectional view of the stop valve.

Fig. 3 is an enlarged view of the structure of fig. 2 at circle a.

In the figure, 1, a valve body; 2. a first valve cover; 3. a baffle plate; 4. water passing holes; 5. a water pipe; 6. a rotating shaft; 7. an eccentric column; 8. a rotating cylinder; 9. an annular groove; 10. a convex ring; 11. a snap ring; 12. a base plate; 13. a spring; 14. a second valve cover; 15. an abutment ring; 16. a first sealing ring; 17. a second sealing ring; 18. an O-shaped ring; 19. a seal ring; 20. a gasket; 21. a third sealing ring; 22. a fourth sealing ring; 23. a sealing ring V; 24. a valve housing; 25. compressing the gasket; 26. a sixth sealing ring; 27. a rubber pad.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, this stop valve includes valve body 1, the one end threaded connection of valve body 1 has the first valve gap 2 of coaxial setting, the centre gripping is fixed with baffle 3 between valve body 1 and the first valve gap 2, baffle 3 has round water hole 4, be equipped with the water pipe 5 of coaxial setting in the valve body 1, be equipped with the drive structure that drives 5 axial displacement of water pipe on the valve body 1, in axial projection direction, water hole 4 sets up around 5 outer walls of water pipe, be equipped with the seal structure that keeps both leakproofness throughout between water pipe 5 and the valve body 1.

The stop valve omits the past valve core and valve seat through the arrangement of the water pipe 5 and the baffle 3, and has small volume and convenient installation and arrangement. When the stop valve works, the driving structure drives the water passing pipe 5 to axially displace, so that the opening degree between the water passing pipe 5 and the baffle 3 is changed, and the flow is adjusted; when a water passing gap is formed between the water passing pipe 5 and the baffle 3, a medium flows from the water passing pipe 5 to the water passing gap, then flows from the water passing hole 4 to the first valve cover 2, and is discharged from the first valve cover 2, when the end part of the water passing pipe 5 is abutted against the baffle 3, the water passing gap between the water passing pipe 5 and the baffle 3 disappears, the water passing hole 4 is positioned on the outer side of the water passing pipe 5, the medium is positioned in the water passing pipe 5, and the baffle 3 achieves the stopping effect; in the axial displacement process of the water passing pipe 5, the sealing structure always keeps the sealing between the water passing pipe 5 and the valve body 1, the leakage is avoided, and the working stability is good.

Further saying in a detailed way, the drive structure includes that 1 top of valve body radially wears to be equipped with

pivot

6, and 6 the inner eccentric posts 7 that have eccentric settings and axial evagination of pivot have, 5 overcoat of water pipe have be cylindric a rotation section of thick bamboo 8, and 5 outer walls of water pipe are equipped with the spacing subassembly to rotating a 8 spacing, and the outer wall of a rotation section of thick bamboo 8 has round annular groove 9, and eccentric posts 7 are located annular groove 9. In this embodiment, the rotating shaft 6 is driven by the motor to rotate (during actual manufacturing, the outer end of the rotating shaft 6 can be connected with the handle), the eccentric column 7 is displaced in the annular groove 9, so as to drive the rotating cylinder 8 to rotate and axially displace, and due to the arrangement of the limiting assembly, the rotating cylinder 8 drives the water passing pipe 5 to axially displace, so as to adjust the opening degree between the water passing pipe 5 and the baffle 3.

Spacing subassembly includes the bulge loop 10 of the radial evagination that 5 outer walls of water pipe have, the outer wall at 5 middle parts of water pipe still inlays and is equipped with snap ring 11, snap ring 11 supports towards the terminal surface that rotates a section of thick bamboo 8 has and is

annular backing plate

12, 5 overcoat of water pipe have the spring 13 that is located between backing plate 12 and the rotation section of thick bamboo 8, spring 13 provides elasticity and makes a rotation section of thick bamboo 8 have the trend of contradicting in bulge loop 10 all the time, spring 13 avoids hard contact, make a rotation section of thick bamboo 8 rotate the displacement smooth and easy, and spring 13 provides elasticity and makes a rotation section of thick bamboo 8 reset fast.

The other end threaded connection of valve body 1 has second valve gap 14, is equipped with between second valve gap 14 and the rotary drum 8 to be annular and supports and lean on ring 15, supports to lean on ring 15 to inlay and is equipped with the sealing washer 16 sealed in 5 outer walls of water pipe, and second valve gap 14 is convenient for assemble, supports to lean on the setting up of ring 15 and sealing washer 16 to make the leakproofness of water pipe 5 and second valve gap 14 department good, avoids leaking. In this embodiment, the end of the water pipe 5 is inserted into the first valve cover 2, so that the guidance performance is good, the end of the rotating cylinder 8 is provided with a groove for the convex ring 10 to be embedded into, the convex ring 10 is positioned in the groove under the action of the spring 13, and the end of the rotating cylinder 8 is abutted against the abutting ring 15.

The sealing structure comprises a sealing ring II 17 which is arranged on the inner wall of the valve body 1 close to the baffle 3 side in an embedded mode, when the water pipe 5 is in axial displacement, the sealing ring II 17 is always sealed on the outer wall of the water pipe 5, the sealing structure also comprises an O-shaped ring 18 which is arranged on the inner wall of the valve body 1 in an embedded mode and a sealing ring 19 which is in an annular shape, the O-shaped ring 18 and the sealing ring 19 are located in the same annular groove which is formed in the inner wall of the valve body 1, and when the water pipe 5 is in axial displacement, the O. O type circle 18 and sealing ring 19 extrude each other, have further improved sealed effect, avoid leaking between water pipe 5 and the valve body 1, during actual manufacturing, O type circle 18 and sealing ring 19 are close to and set up in two 17 of sealing washer, and O type circle 18 is located between two 17 of sealing washer and the sealing ring 19, and sealing ring 19 is the closest to baffle 3 setting, plays multiple sealed effect like this, and sealed effect is good.

The baffle 3 is inlayed towards the terminal surface of water passing pipe 5 and is equipped with and be annular sealed 20, and sealed 20 has towards the terminal surface of water passing pipe 5 and is the annular recess, and the tip inner wall of water passing pipe 5 towards baffle 3 is the conical surface that is the flaring. When the water pipe 5 butts against the baffle 3, the conical surface is embedded into the groove of the sealing gasket 20, the sealing effect is good, and the leakage problem does not exist.

In order to have good sealing performance, a third sealing ring 21 sealed on the valve body 1 is embedded in the inner wall of the first valve cover 2, a fourth sealing ring 22 is arranged between the end part of the first valve cover 2 and the valve body 1, and a fifth sealing ring 23 is arranged between the second valve cover 14 and the valve body 1; for the purpose of stable operation and good sealing performance of the rotating shaft 6, the valve body 1 is in threaded connection with a valve sleeve 24, a compression gasket 25 is arranged between the valve sleeve 24 and the top of the valve body 1, the rotating shaft 6 axially penetrates through the valve sleeve 24, a sealing ring six 26 sealed in the valve sleeve 24 is embedded in the outer wall of the rotating shaft 6, a blocking shoulder blocking the rotating shaft 6 is arranged on the inner wall of the top of the valve sleeve 24, and a rubber gasket 27 is arranged between the blocking shoulder and the rotating shaft 6.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The stop valve comprises a valve body (1) and is characterized in that one end of the valve body (1) is connected with a first valve cover (2) which is coaxially arranged, a baffle (3) is fixedly clamped between the valve body (1) and the first valve cover (2), the baffle (3) is provided with a circle of water passing holes (4), a water passing pipe (5) which is coaxially arranged is arranged in the valve body (1), the valve body (1) is provided with a driving structure for driving the water passing pipe (5) to axially displace, the water passing holes (4) are arranged around the outer wall of the water passing pipe (5) when seen in the axial projection direction, and a sealing structure for always keeping the sealing performance of the water passing pipe (5) and the valve body (1) is arranged between the water passing pipe (5) and the valve body.

2. The stop valve according to claim 1, characterized in that the driving structure comprises a rotating shaft (6) radially penetrating through the top of the valve body (1), an eccentric column (7) which is eccentrically arranged and axially protruded is arranged at the inner end of the rotating shaft (6), a cylindrical rotating cylinder (8) is sleeved outside the water passing pipe (5), a limiting component for limiting the rotating cylinder (8) is arranged on the outer wall of the water passing pipe (5), a ring of annular groove (9) is formed in the outer wall of the rotating cylinder (8), and the eccentric column (7) is located in the annular groove (9).

3. The stop valve of claim 2, characterized in that, spacing subassembly include radially outward protruding bulge loop (10) that water pipe (5) outer wall has, the outer wall at water pipe (5) middle part still inlay and be equipped with snap ring (11), snap ring (11) support towards the terminal surface that rotates a section of thick bamboo (8) have and are annular backing plate (12), water pipe (5) overcoat have be located backing plate (12) and rotate a spring (13) between section of thick bamboo (8), spring (13) provide elasticity and make and rotate a section of thick bamboo (8) and have the trend of contradicting in bulge loop (10) all the time.

4. A stop valve as claimed in claim 3, characterized in that a second valve cover (14) is connected to the other end of the valve body (1), an annular abutting ring (15) is arranged between the second valve cover (14) and the rotary cylinder (8), and a first sealing ring (16) sealed on the outer wall of the water pipe (5) is embedded in the abutting ring (15).

5. A stop valve according to claim 4, characterized in that the sealing structure comprises a second sealing ring (17) embedded in the inner wall of the valve body (1) close to the baffle (3), and when the water pipe (5) is axially displaced, the second sealing ring (17) is always sealed on the outer wall of the water pipe (5).

6. A stop valve according to claim 5, characterized in that the sealing structure comprises an O-shaped ring (18) and an annular sealing ring (19) embedded in the inner wall of the valve body (1), the O-shaped ring (18) and the annular sealing ring (19) are positioned in the same annular groove formed in the inner wall of the valve body (1), and when the water pipe (5) is axially displaced, the O-shaped ring (18) and the annular sealing ring (19) are always sealed on the outer wall of the water pipe (5).

7. A stop valve according to claim 6, characterized in that the baffle (3) is embedded with a ring-shaped sealing gasket (20) towards the end surface of the water pipe (5), the end surface of the sealing gasket (20) towards the water pipe (5) is provided with a ring-shaped groove, and the inner wall of the end part of the water pipe (5) towards the baffle (3) is a flaring conical surface.

8. A stop valve as claimed in claim 7, characterized in that a third sealing ring (21) is embedded in the inner wall of the first valve cover (2) and is sealed with the valve body (1), a fourth sealing ring (22) is arranged between the end of the first valve cover (2) and the valve body (1), and a fifth sealing ring (23) is arranged between the second valve cover (14) and the valve body (1).

9. The stop valve of claim 8, characterized in that the valve body (1) is in threaded connection with a valve sleeve (24), a compression gasket (25) is arranged between the valve sleeve (24) and the top of the valve body (1), the rotating shaft (6) axially penetrates through the valve sleeve (24), a sealing ring six (26) sealed in the valve sleeve (24) is embedded in the outer wall of the rotating shaft (6), a blocking shoulder for blocking the rotating shaft (6) is arranged on the inner wall of the top of the valve sleeve (24), and a rubber gasket (27) is arranged between the blocking shoulder and the rotating shaft (6).