CN217927207U

CN217927207U - Stop valve with tight sealing surface of valve clack and sealing surface of valve seat

Info

Publication number: CN217927207U
Application number: CN202221658526.5U
Authority: CN
Inventors: 王小雪; 周昆; 王震; 李寒芝; 汤遨文
Original assignee: Sevis Pump Valve Manufacturing Zhejiang Co ltd
Current assignee: Sevis Pump Valve Manufacturing Zhejiang Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-29
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a sealed inseparable stop valve of valve clack sealing face and disk seat sealing face, which comprises a valve body, the valve gap, the valve rod, the right-hand member is equipped with the passageway in the valve body, the left end is equipped with down the passageway in the valve body, it establishes in lower passageway rightmost end top to go up the passageway leftmost end, go up through erecting the through-hole intercommunication between passageway leftmost end and the lower passageway rightmost end, the valve body top is equipped with the valve gap, the valve gap is established directly over erecting the through-hole, be equipped with in the valve gap and erect the coaxial valve rod of through-hole, pass through threaded connection between valve rod and the valve gap, the valve rod runs through the valve gap, including the disk seat, the round platform, the round through-hole, the ring, first wedge tooth, the arc wall, the valve clack, the pipe, the plectane, the cylinder, the horn pipe, second wedge tooth, the arc bead. The utility model discloses a fix terminal surface under the plectane with first sealing washer, when the valve clack bore fluid impact, first sealing washer can be protected by the cylinder, and the cylinder blocks the fluid and makes it can not the direct impact first sealing washer, makes first sealing washer fixed firm difficult not hard up.

Description

Stop valve with tight sealing surface of valve clack and sealing surface of valve seat

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of stop valve, especially a sealed face of valve clack seals the technical field of inseparable stop valve with the sealed face of disk seat.

[ background ] A method for producing a semiconductor device

The stop valve, also called stop valve, is the most widely used valve, and it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, it is not only suitable for middle and low pressure, but also suitable for high pressure. The closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of the valve seat by means of the pressure of the valve rod, and the medium is prevented from flowing. The stop valve only allows the medium to flow in one direction, and the installation has directionality. The structure length of stop valve is greater than the gate valve, and fluid resistance is big simultaneously, and long-term operation, it is insecure to seal, and sealing reliability is not strong.

[ Utility model ] content

The utility model aims at solving the problem among the prior art, providing a sealed inseparable stop valve of valve clack sealing face and disk seat sealing face, can make it sealed firm, sealing reliability is high.

In order to achieve the above object, the utility model provides a stop valve with tight sealing between a valve clack sealing surface and a valve seat sealing surface, which comprises a valve body, a valve cover and a valve rod, wherein the right end in the valve body is provided with an upper channel, the left end in the valve body is provided with a lower channel, the leftmost end of the upper channel is arranged above the rightmost end of the lower channel, the leftmost end of the upper channel is communicated with the rightmost end of the lower channel through a vertical through hole, the uppermost end of the valve body is provided with the valve cover, the valve cover is arranged right above the vertical through hole, the valve rod coaxial with the vertical through hole is arranged in the valve cover, the valve rod is connected with the valve cover through a screw thread, the valve rod penetrates through the valve cover, and comprises a valve seat, a round platform, a round through hole, a round ring, a first wedge-shaped tooth, a valve clack, a round pipe, a round column, a second wedge-shaped tooth and an arc-shaped bead, the valve seat is arranged on the upper end surface of the vertical through hole and coaxial with the vertical through hole, the round platform, the round ring, the first wedge-shaped tooth and the arc-shaped groove, the upper end surface of the circular platform is an upper bottom, the upper end surface of the circular platform is provided with coaxial circular through holes, the lower end surface of the circular platform is provided with coaxial circular rings, the lower end surface of each circular ring is fixed on the upper end surface of the vertical through hole, the upper end surface of each circular ring is provided with a plurality of first wedge-shaped teeth which are radially arranged and uniformly distributed on the circumference, the first wedge-shaped teeth are arranged on the outer side of the circular platform, the left inclined surface of each first wedge-shaped tooth is provided with an arc-shaped groove, the valve flap mainly comprises a circular tube, a circular plate, a cylinder, a horn tube, a second wedge-shaped tooth and an arc-shaped convex edge, the lower end of the valve rod is fixed in the circular tube, the lower end surface of the circular tube is provided with a coaxial circular plate, the lower end surface of the circular plate is provided with a coaxial cylinder, the coaxial horn tube is arranged in the cylinder, the horn tube is adaptively sleeved on the outer side of the circular platform, the lower end surface of the cylinder is provided with a plurality of second wedge-shaped teeth which are radially arranged and uniformly distributed on the circumference, and a plurality of the second wedge-shaped teeth are tightly meshed with a plurality of the first wedge-shaped teeth, the right inclined plane of every second wedge tooth is equipped with the arc bead, and a plurality of arc bead and a plurality of arc wall one-to-one, arc bead is cliied to the arc wall.

Preferably, when the valve clack rotates and descends to the lowest end, the second wedge-shaped teeth and the first wedge-shaped teeth are tightly meshed.

Preferably, a first seal ring is sandwiched between the upper end face of the circular truncated cone and the lower end face of the circular plate, and the first seal ring is fixed to the lower end face of the circular plate.

Preferably, an annular groove is formed in the inner wall of the upper end of the circular tube, the annular groove is composed of a first annular groove and a second annular groove, the second annular groove axially extends downwards from the upper end face of the circular tube, the first annular groove is sleeved on the second annular groove to be communicated with the second annular groove, a second sealing ring which is matched with the first sealing ring is filled in the annular groove, and the inner diameter of the second sealing ring is smaller than the inner diameter of the circular tube.

The utility model has the advantages that: the first sealing ring is fixed on the lower end face of the circular plate, when the valve clack bears fluid impact, the first sealing ring can be protected by the cylinder, and the cylinder blocks the fluid so that the fluid cannot directly impact the first sealing ring, so that the first sealing ring is firmly fixed and is not easy to loosen, the service life of the first sealing ring is prolonged, and the first sealing ring has longer excellent sealing property; the second sealing ring enhances the sealing property between the valve rod and the circular tube, so that the connecting surface between the valve rod and the circular tube is not easily corroded by fluid, and the valve rod can be effectively fixed in the circular tube for a longer time; the valve clack is easy to shift in the later stage when bearing long pressure, so that sealing failure between the valve clack and the valve seat is caused, the round platform and the horn tube are matched with each other to correct the shift of the valve clack, and because the outer diameter of the upper end of the round platform is smaller than the inner diameter of the lower end of the horn tube, after the valve clack shifts, the round platform and the horn tube are not coaxial, but still can enter the horn tube, and after the round platform and the horn tube approach each other and are completely embedded into the horn tube, the round platform and the horn tube are coaxial at the moment, the shift of the valve clack is corrected, and the valve clack and the valve seat still have excellent sealing performance; when the second wedge-shaped tooth is tightly engaged with the first wedge-shaped tooth, the arc-shaped groove clamps the arc-shaped convex rib to enable the relative position of the second wedge-shaped tooth and the first wedge-shaped tooth to be limited, and further the sealing between the valve clack and the valve seat is firmer.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic front view of a valve flap and a valve seat of a stop valve of the present invention, wherein the sealing surface of the valve flap and the sealing surface of the valve seat are tightly sealed;

fig. 2 is the utility model discloses a sealed inseparable stop valve front view schematic diagram of valve clack sealing face and the sealed face of disk seat.

In the figure: the valve comprises a valve body 1, a valve cover 5, an upper channel 11 of a valve rod 4, a lower channel 12, a vertical through hole 13, a valve seat 2, a circular truncated cone 21, a circular through hole 211, a circular ring 22, first wedge-shaped teeth 23, an arc-shaped groove 231, a valve clack 3, a circular pipe 31, a circular plate 32, a cylinder 33, a horn tube 331, second wedge-shaped teeth 24, an arc-shaped rib 341, a first sealing ring 201, an annular groove 301, a first annular groove 3011, a second annular groove 3012 and a second sealing ring 302.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the stop valve of the present invention comprises a valve body 1, a valve cover 5, and a valve rod 4, wherein an upper channel 11 is disposed at the right end of the valve body 1, a lower channel 12 is disposed at the left end of the valve body 1, the leftmost end of the upper channel 11 is disposed above the rightmost end of the lower channel 12, the leftmost end of the upper channel 11 is communicated with the rightmost end of the lower channel 12 via a vertical through hole 13, the valve cover 5 is disposed at the uppermost end of the valve body 1, the valve cover 5 is disposed directly above the vertical through hole 13, the valve rod 4 coaxial with the vertical through hole 13 is disposed in the valve cover 5, the valve rod 4 is in threaded connection with the valve cover 5, the valve rod 4 penetrates through the valve cover 5, and comprises a valve seat 2, a circular table 21, a circular through hole 211, a circular ring 22, a first wedge-shaped tooth 23, an arc-shaped groove 231, a circular tube 3, a valve flap 31, a circular plate 32, a cylinder 33, a horn tube 331, a second wedge-shaped tooth 24, and an arc-shaped rib 341, the valve seat 2 is arranged on the upper end face of the vertical through hole 13, the valve seat 2 and the vertical through hole 13 are coaxial, the valve seat 2 mainly comprises a circular table 21, a circular through hole 211, a circular ring 22, a first wedge-shaped tooth 23 and an arc-shaped groove 231, the upper end face of the circular table 21 is an upper bottom, the upper end face of the circular table 21 is provided with the coaxial circular through hole 211, the lower end face of the circular table 21 is provided with the coaxial circular ring 22, the lower end face of the circular ring 22 is fixed on the upper end face of the vertical through hole 13, the upper end face of the circular ring 22 is provided with a plurality of first wedge-shaped teeth 23 which are radially arranged and uniformly distributed on the circumference, the first wedge-shaped teeth 23 are arranged on the outer side of the circular table 21, the left inclined plane of each first wedge-shaped tooth 23 is provided with the arc-shaped groove 231, the valve flap 3 mainly comprises a circular pipe 31, a circular plate 32, a cylinder 33, a horn tube 331, a second wedge-shaped tooth 24 and an arc-shaped convex rib 341, the lower end face of the valve rod 4 is fixed in the circular pipe 31, the lower end face of the circular pipe 31 is provided with the coaxial circular plate 32, a coaxial horn tube 331 is arranged in the cylinder 33, the horn tube 331 is adaptively sleeved outside the circular truncated cone 21, a plurality of second wedge-shaped teeth 24 which are radially arranged and are uniformly distributed circumferentially are arranged on the lower end surface of the cylinder 33, the plurality of second wedge-shaped teeth 24 are tightly meshed with the plurality of first wedge-shaped teeth 23, an arc-shaped convex rib 341 is arranged on the right inclined surface of each second wedge-shaped tooth 24, the plurality of arc-shaped convex ribs 341 are in one-to-one correspondence with the plurality of arc-shaped grooves 231, the arc-shaped convex ribs 341 are clamped by the arc-shaped grooves 231, when the valve flap 3 rotates and descends to the lowest end, the second wedge-shaped teeth 24 and the first wedge-shaped teeth 23 are tightly meshed, a first sealing ring 201 is clamped between the upper end surface of the circular truncated cone 21 and the lower end surface of the circular plate 32, the first sealing ring 201 is fixed on the lower end surface of the circular tube 32, an annular groove 301 is arranged on the inner wall of the upper end of the circular tube 31, the annular groove 301 is composed of the first annular groove 3011 and the second annular groove 3012, the second annular groove 3012 is axially extended downwards from the upper end surface of the circular tube 31, the first annular groove 3011 and the first annular groove 3011 is sleeved with the second annular groove 3012, the second annular groove 3011, the second annular groove 302, and the inner diameter of the second annular groove 302 is smaller than the second annular groove 302.

The utility model discloses the working process:

the utility model relates to a sealed inseparable stop valve of valve clack sealing face and valve seat sealing face is in the course of the work, and 3 rotatory rises of valve clack when keeping away from disk seat 2, the inside route that forms of stop valve, 3 rotatory descending of valve clack are close to disk seat 2 and the inseparable meshing of the first wedge tooth of a plurality of 24 and a plurality of second wedge teeth, the inside closed circuit that forms of stop valve.

In the utility model, the first sealing ring 201 is fixed on the lower end face of the circular plate 32, when the valve flap 3 bears the fluid impact, the first sealing ring 201 is protected by the cylinder 33, the cylinder 33 blocks the fluid to prevent the fluid from directly impacting the first sealing ring 201, so that the first sealing ring 201 is firmly fixed and is not easy to loosen, the service life of the first sealing ring 201 is prolonged, and the first sealing ring 201 has longer excellent sealing property; the second sealing ring 302 enhances the sealing performance between the valve rod 4 and the circular tube 31, so that the connecting surface between the valve rod 4 and the circular tube 31 is not easily corroded by fluid, and the valve rod 4 can be effectively fixed in the circular tube 31 for a longer time; the position of the valve clack 3 is easy to deviate in the later period of bearing long pressure, so that the sealing between the valve clack 3 and the valve seat 2 fails, the round platform 21 and the horn tube 331 are matched with each other to correct the deviation of the valve clack 3, because the outer diameter of the upper end of the round platform 21 is smaller than the inner diameter of the lower end of the horn tube 331, after the valve clack 3 deviates, the round platform 21 and the horn tube 331 are not coaxial, but the round platform 21 can still enter the horn tube 331, and after the round platform 21 and the horn tube 331 approach to each other and the round platform 21 is completely embedded into the horn tube 331, the round platform 21 and the horn tube 331 are coaxial at the moment, the deviation of the valve clack 3 is corrected, and the valve clack 3 and the valve seat 2 still have excellent sealing performance; when the second wedge-shaped tooth 24 is tightly engaged with the first wedge-shaped tooth 23, the arc-shaped groove 231 clamps the arc-shaped rib 341 so that the relative position of the second wedge-shaped tooth 24 and the first wedge-shaped tooth 23 is limited, and the sealing between the valve clack 3 and the valve seat 2 is firmer.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. The utility model provides a sealed inseparable stop valve of valve clack sealing face and disk seat sealing face, including valve body (1), valve gap (5), valve rod (4), the right-hand member is equipped with passageway (11) in valve body (1), the left end is equipped with down passageway (12) in valve body (1), it establishes passageway (12) bottom end top to go up passageway (11) left end, go up passageway (11) left end and down between passageway (12) bottom end through erecting through-hole (13) intercommunication, valve body (1) top is equipped with valve gap (5), establish directly over erecting through-hole (13) valve gap (5), be equipped with in valve gap (5) and erect coaxial valve rod (4) of through-hole (13), pass through threaded connection between valve rod (4) and valve gap (5), valve rod (4) run through valve gap (5), its characterized in that: including disk seat (2), round platform (21), circle through-hole (211), ring (22), first wedge tooth (23), arc wall (231), valve clack (3), pipe (31), plectane (32), cylinder (33), trumpet tube (331), second wedge tooth (24), arc bead (341), establish in perpendicular through-hole (13) up end and disk seat (2), it is coaxial to erect through-hole (13) disk seat (2), disk seat (2) mainly by round platform (21), circle through-hole (211), ring (22), first wedge tooth (23), arc wall (231) are constituteed, round platform (21) up end is the upper base, round platform (21) up end is equipped with coaxial circle through-hole (211), round platform (21) lower extreme face is equipped with coaxial ring (22), ring (22) lower extreme face is fixed at perpendicular through-hole (13) up end, ring (22) up end is equipped with the radial setting of a plurality of and is first wedge tooth (23) that circumference evenly distributed, first wedge tooth (23) are established in the wedge tooth (23) outside round platform (21), the left side bevel (31) of every round platform (23), trumpet tube (31) is equipped with arc wall (31), trumpet tube (31), circle round platform (31), round platform (21), circle cone (31), trumpet tube (31), round platform (21) outside Second wedge tooth (24), arc bead (341) are constituteed, the lower extreme of valve rod (4) is fixed in pipe (31), terminal surface is equipped with coaxial plectane (32) under pipe (31), terminal surface is equipped with coaxial cylinder (33) under plectane (32), be equipped with coaxial horn tube (331) in cylinder (33), horn tube (331) adaptability cover is in round platform (21) outside, terminal surface is equipped with second wedge tooth (24) that a plurality of radially set up and be circumference evenly distributed under cylinder (33), a plurality of second wedge tooth (24) and the first wedge tooth of a plurality of (23) closely mesh, the right inclined plane of every second wedge tooth (24) is equipped with arc bead (341), a plurality of arc bead (341) and a plurality of arc wall (231) one-to-one, arc bead (341) are cliied to arc bead (231).

2. The shut-off valve of claim 1, wherein the sealing surface of the valve flap is tightly sealed with the sealing surface of the valve seat, and the shut-off valve further comprises: when the valve clack (3) rotates and descends to the lowest end, the second wedge-shaped teeth (24) and the first wedge-shaped teeth (23) are tightly meshed.

3. The shut-off valve of claim 1, wherein the sealing surface of the valve flap is tightly sealed with the sealing surface of the valve seat, and the shut-off valve further comprises: a first sealing ring (201) is clamped between the upper end face of the circular table (21) and the lower end face of the circular plate (32), and the first sealing ring (201) is fixed on the lower end face of the circular plate (32).

4. The shut-off valve of claim 1, wherein the sealing surface of the valve flap is tightly sealed with the sealing surface of the valve seat, and the shut-off valve further comprises: pipe wall is equipped with ring channel (301) in pipe (31) upper end, ring channel (301) comprise first ring channel (3011), second ring channel (3012) follow pipe (31) up end axial downwardly extending, second ring channel (3012) and first ring channel (3011) cover second ring channel (3012) intercommunication are lived in first ring channel (3011), ring channel (301) intussuseption is filled with suitable second sealing washer (302), the internal diameter of second sealing washer (302) is less than pipe (31) internal diameter.