CN215806318U

CN215806318U - A double-sealed globe valve

Info

Publication number: CN215806318U
Application number: CN202121674149.XU
Authority: CN
Inventors: 鄢新林; 顾堂文
Original assignee: Zhejiang Compass Valve Co ltd
Current assignee: Zhejiang Compass Valve Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-02-11
Anticipated expiration: 2031-07-21

Abstract

The utility model discloses a double-sealed globe valve, which comprises a valve body, a valve seat and a valve stem. The valve stem penetrates the valve body and is provided with a valve flap, the valve body is provided with a flow channel, and one end of the flow channel is the flow channel inlet. The other end is the outlet of the flow channel. The valve stem and the valve disc cooperate with each other to form a linkage, and press against the valve seat to control the cutoff and communication of the flow channel. The valve disc is provided with a sealing component, and the sealing component includes a first seal and a second Two seals, the first seal includes a fixed part, the fixed part squeezes the second seal and fixes the second seal on the valve disc, the first seal is fixed on the valve disc by bolts, and the valve seat is provided with a first sealing slope, The first seal is provided with a second seal slope which is matched with the first seal slope for sealing. When the valve stem controls the valve flap to cut off, the first seal slope and the second seal slope are in close contact. The utility model has the following advantages and effects: the double sealing can better ensure the sealing performance of the valve body and effectively prevent leakage.

Description

Double-sealing stop valve

Technical Field

The utility model relates to the field of valves, in particular to a double-seal stop valve.

Background

The opening and closing part of the stop valve is a plug-shaped valve clack, the upper surface of the seal is a plane or a conical surface, and the valve clack moves linearly along the central line of the valve seat. The valve rod can move in a lifting rod and a rotary lifting rod, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, so that the shutoff stop valve is very suitable for cutting off or regulating and throttling. The valve rod of the valve has relatively short opening or closing stroke and reliable cut-off function, and the valve is suitable for regulating flow rate owing to the proportional relation between the valve seat port change and the valve clack stroke.

The sealing performance of the stop valve determines the use of the stop valve, and the poor sealing performance of the valve clack of the existing stop valve causes the stop valve to fail in throttling and stopping functions.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a high-sealing double-sealing stop valve.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a double containment stop valve, it includes valve body, disk seat and valve rod, the valve rod run through the valve body and be provided with the valve clack, be provided with the runner in the valve body, the one end of runner is the runner import, and the other end is the runner export, the valve rod mutually supports with the valve clack and forms the linkage, supports tightly the disk seat control flow way cuts off and communicates characterized by: be provided with seal assembly on the valve clack, seal assembly is sealed including the first sealed and the second that set up on the valve clack, first sealed including by the fixed part, the fixed part extrusion second is sealed and sealed being fixed in the valve clack with the second on, first sealed through the bolt fastening on the valve clack, be provided with first sealed inclined plane on the disk seat, be provided with the sealed inclined plane of the first sealed inclined plane of cooperation on the first sealed second that carries out sealedly, work as when valve rod control valve clack cuts off, the sealed inclined plane of first sealed inclined plane and second pastes tightly.

By adopting the technical scheme, the sealing surface of the ladder formed by the valve seat and the second sealing match to form the seal between the valve clack and the valve seat, the first sealing inclined surface and the second sealing inclined surface are matched with each other to form a second seal, and the two seals are matched with each other to further enhance the sealing performance of the valve.

The utility model is further configured to: the valve clack is sunken to be provided with a positioning recess, the second seal comprises a positioning part, and the positioning part is inserted and matched in the positioning recess.

Through adopting above-mentioned technical scheme, location portion is inserted and is joined in marriage and gone on in the location sunken, can prevent it from breaking away from the location sunken when carrying out the sealed spacing fixed second of second.

The utility model is further configured to: be provided with fixed subassembly between valve rod and the valve clack, fixed subassembly is including setting up in the fixed slot of valve clack, the valve rod extends into in the fixed slot, the cover is equipped with solid fixed ring on the valve rod, it has fixed valve clack and solid fixed ring's screw to pass on the valve clack.

Through adopting above-mentioned technical scheme, it is fixed mutually with the valve rod valve clack, gu fixed ring can extrude partly fixed valve clack of valve clack and restrict it and break away from in the fixed slot.

The utility model is further configured to: the fixing assembly further comprises a fixing groove arranged on the valve rod, a buffering ring is arranged in the fixing groove, the fixing groove comprises a first groove and a second groove, the width of the second groove is larger than that of the first groove, the valve rod comprises a first rod arranged in the first groove, and when the first rod is located in the first groove, the buffering ring limits the first rod to be separated from the first groove.

Through adopting above-mentioned technical scheme, form the ladder in the fixed slot, the buffer ring sets up on the valve rod, when solid fixed ring extrudees, can cooperate solid fixed ring to go on fixed while can also prevent to take place to collide with between the fixed ring valve clack to the valve rod.

The utility model is further configured to: the valve body is provided with a packing gland and a valve cover, the valve cover is provided with an upper fixing hole, the valve rod penetrates through the upper fixing hole to be connected with the valve clack, packing is arranged in the upper fixing hole, and the packing gland extrudes the packing and limits the packing to be separated from the upper fixing hole.

Through adopting above-mentioned technical scheme, can be fixed in the valve body with the valve rod on, prevent valve rod and valve body separation, can make gland extrusion packing play the restriction simultaneously.

The utility model is further configured to: the filler comprises graphite.

By adopting the technical scheme, the sealing device has good sealing performance.

The utility model is further configured to: the valve comprises a valve body and a valve cover, wherein a sealing part protrudes from the valve cover, a sealing recess matched with the sealing part is formed in the valve body, and a flexible seal is arranged on the sealing part.

Through adopting above-mentioned technical scheme, between sealing valve rod and the valve body, can prevent the leakage that appears between the two.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a.

In the figure: 1. a valve body; 2. a valve seat; 21. a first sealing bevel; 3. a valve stem; 4. a valve flap; 41. a first seal; 42. a second seal; 43. a fixed part; 44. a positioning part; 45. fixing grooves; 46. a fixing ring; 47. a buffer ring; 48. a second groove; 49. a first lever; 51. a packing gland; 52. a valve cover; 53. an upper fixing hole; 54. a filler; 6. sealing the recess; 61. and (4) flexible sealing.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 2.

The utility model provides a double containment stop valve, it includes valve body 1, disk seat 2 and valve rod 3, valve rod 3 run through valve body 1 and be provided with valve clack 4, be provided with the runner in the valve body 1, the one end of runner is the runner import, and the other end is the runner export, and valve rod 3 and valve clack 4 mutually support and form the linkage, support tight disk seat 2 control flow way and cut off and communicate characterized by: be provided with seal assembly on valve clack 4, seal assembly is including setting up first sealed 41 and the sealed 42 of second on valve clack 4, first sealed 41 includes by fixed part 43, fixed part 43 extrudees the sealed 42 of second and is fixed in valve clack 4 with the sealed 42 of second on, first sealed 41 is fixed in on valve clack 4 through the bolt, be provided with first sealed inclined plane 21 on the disk seat 2, be provided with the sealed inclined plane of the first sealed inclined plane 21 of cooperation on the first sealed 41 and carry out sealed second, when valve rod 3 control valve clack 4 cuts off, first sealed inclined plane 21 and the sealed inclined plane of second paste tightly.

The valve clack 4 is sunken with a positioning recess, the second seal 42 comprises a positioning part 44, and the positioning part 44 is inserted into the positioning recess to limit the position of the second seal 42.

Be provided with fixed subassembly between valve rod 3 and the valve clack 4, fixed subassembly is including setting up in the fixed slot 45 of valve clack 4, and in valve rod 3 extended into fixed slot 45, the cover was equipped with solid fixed ring 46 on the valve rod 3, and the last screw that has fixed valve clack 4 and solid fixed ring 46 that passes of valve clack 4.

The fixing assembly further comprises a fixing groove arranged on the valve rod 3, a buffering ring 47 is arranged in the fixing groove, the fixing groove 45 comprises a first groove and a second groove 48, the width of the second groove 48 is larger than that of the first groove, the valve rod 3 comprises a first rod 49 arranged on the first groove, and when the first rod 49 is located in the first groove, the buffering ring 47 limits the first rod 49 to be separated from the first groove.

The valve body 1 is provided with a packing gland 51 and a valve cover 52, the valve cover 52 is provided with an upper fixing hole 53, the valve rod 3 penetrates through the upper fixing hole 53 to be connected with the valve clack 4, packing 54 is arranged in the upper fixing hole 53, and the packing gland 51 extrudes the packing 54 and limits the packing to be separated from the upper fixing hole 53.

The filler 54 comprises graphite.

The valve cover 52 is provided with a sealing part in a protruding way, the valve body 1 is provided with a sealing dent 6 matched with the sealing part, and the sealing part is provided with a flexible seal 61.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A double-sealed globe valve, comprising a valve body (1), a valve seat (2) and a valve stem (3), the valve stem (3) passing through the valve body (1) and being provided with a valve flap (4). ), the valve body (1) is provided with a flow channel, one end of the flow channel is the flow channel inlet, the other end is the flow channel outlet, the valve stem (3) and the valve disc (4) cooperate with each other to form a linkage , press the valve seat (2) to control the flow passage to cut off and communicate, and it is characterized in that: the valve disc (4) is provided with a sealing component, and the sealing component includes a first valve arranged on the valve disc (4). A seal (41) and a second seal (42), the first seal (41) includes a fixed portion (43) that presses the second seal (42) and closes the second seal (42) ) is fixed on the valve disc (4), the first seal (41) is fixed on the valve disc (4) by bolts, the valve seat (2) is provided with a first sealing slope (21), the first seal (41) is A seal (41) is provided with a second sealing slope (21) for sealing. When the valve stem (3) controls the valve flap (4) to cut off, the first sealing slope (21) ) and the second sealing bevel.

2. A double-sealed globe valve according to claim 1, characterized in that: the valve flap (4) is recessed with a positioning depression, and the second seal (42) comprises a positioning portion (44), so The positioning portion (44) is inserted into the positioning recess to limit the position of the second seal (42).

3. A double-sealed globe valve according to claim 1, characterized in that: a fixing component is arranged between the valve stem (3) and the valve disc (4), and the fixing component comprises a (4) of the fixing groove (45), the valve stem (3) extends into the fixing groove (45), the valve stem (3) is sleeved with a fixing ring (46), and the valve flap (4) The screws for fixing the valve disc (4) and the fixing ring (46) are passed through.

4. A double-sealed globe valve according to claim 3, characterized in that: the fixing assembly further comprises a fixing groove arranged on the valve stem (3), and a buffer ring (47) is arranged in the fixing groove. , the fixing slot (45) includes a first slot and a second slot (48), the width of the second slot (48) is larger than that of the first slot, and the valve stem (3) includes a first slot arranged in the first slot A rod (49), when the first rod (49) is located in the first groove, the buffer ring (47) restricts the first rod (49) from leaving the first groove.

5. A double-sealed globe valve according to claim 4, characterized in that: the valve body (1) is provided with a packing gland (51) and a valve cover (52), the valve cover (52) ) is provided with an upper fixing hole (53), the valve stem (3) is connected to the valve flap (4) through the upper fixing hole (53), and a packing (54) is arranged in the upper fixing hole (53), so The packing gland (51) squeezes the packing (54) and restricts it from disengaging from the upper fixing hole (53).

6 . The double-sealed globe valve according to claim 5 , wherein the packing ( 54 ) comprises graphite. 7 .

7 . The double-sealed globe valve according to claim 5 , wherein a sealing portion protrudes from the valve cover ( 52 ), and a sealing recess matching the sealing portion is provided on the valve body ( 1 ). 8 . (6), the sealing portion is provided with a flexible seal (61).