CN219774896U - Backflow-preventing check gate valve - Google Patents
Backflow-preventing check gate valve Download PDFInfo
- Publication number
- CN219774896U CN219774896U CN202321295634.5U CN202321295634U CN219774896U CN 219774896 U CN219774896 U CN 219774896U CN 202321295634 U CN202321295634 U CN 202321295634U CN 219774896 U CN219774896 U CN 219774896U
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- China
- Prior art keywords
- check
- water outlet
- joint
- hinge
- hole
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 115
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000000694 effects Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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- Check Valves (AREA)
Abstract
The check gate valve comprises a valve body, a water inlet joint arranged on the left side of the valve body and a water outlet joint arranged on the right side of the valve body, wherein a flashboard matched with the water inlet joint is arranged in the valve body, a valve rod is arranged at the upper end of the flashboard, the upper end of the valve rod upwards penetrates out of the valve body and is provided with a hand wheel, and an auxiliary joint communicated with the inner space of the water outlet joint is arranged on the upper surface of the middle part of the water outlet joint; the upper end port of the auxiliary joint is in threaded connection with a sealing cover; a check cavity is arranged in the middle of the auxiliary joint; the check cavity is communicated with the inner space of the valve body through a water outlet channel; the right end port of the water outlet channel extends out of the check cavity to form an annular check boss; the inner wall of the front side of the left part of the auxiliary joint is provided with a front hinging seat corresponding to the position of the check boss. The backflow-preventing check gate valve not only has the function of opening and closing water flow, but also has the check function, and can effectively prevent water flow from flowing reversely.
Description
Technical Field
The utility model relates to a gate valve, in particular to a backflow-preventing check gate valve.
Background
The gate valve is a valve taking the gate plate as an opening and closing member, the up-and-down movement of the gate plate can be realized by rotating the hand wheel, so that the gate valve is opened and closed, the traditional gate valve is provided with a water inlet connector and a water outlet connector, the water inlet connector is connected with a water inlet pipeline, the water outlet connector is connected with a water outlet pipeline, and when the gate valve is opened, water in the water inlet pipeline can enter the gate valve body through the water inlet connector and then flows into the water outlet pipeline through the water outlet connector for use.
In the gate valve in-service use, the condition that the rivers are adverse current can take place, and traditional gate valve only has the function of opening and closing rivers, can't react to the rivers that flow backward, and once the rivers flow backward, not only easily cause the pollution of rivers source, if normal flow rivers are used for driving other parts, the rivers of adverse current then can seriously influence normal drive work, can cause the damage of other parts more, has serious potential safety hazard.
Disclosure of Invention
The utility model aims to solve the technical problem of the prior art and provide a backflow-preventing check gate valve which has the functions of opening and closing water flow and the check function and can effectively place the backflow of the water flow.
The technical scheme adopted for solving the technical problems is as follows:
the utility model discloses a backflow-preventing check gate valve, which comprises a valve body, a water inlet joint arranged on the left side of the valve body and a water outlet joint arranged on the right side of the valve body, wherein a flashboard matched with the valve body is arranged in the valve body, a valve rod is arranged at the upper end of the flashboard, and the upper end of the valve rod upwards penetrates out of the valve body and is provided with a hand wheel, and the backflow-preventing check gate valve is characterized in that: the upper surface of the middle part of the water outlet joint is provided with an auxiliary joint communicated with the inner space of the water outlet joint; the upper end port of the auxiliary joint is in threaded connection with a sealing cover; a check cavity is arranged in the middle of the auxiliary joint; the check cavity is communicated with the inner space of the valve body through a water outlet channel; the right end port of the water outlet channel extends out of the check cavity to form an annular check boss; the inner wall of the front side of the left part of the auxiliary joint is provided with a front hinging seat corresponding to the position of the check boss; the inner wall of the rear side of the left part of the auxiliary joint is provided with a rear hinging seat which is symmetrical with the front hinging seat; a check plate attached to the right side wall of the check boss is arranged in the check cavity; the upper end of the check plate is provided with an articulated arm positioned between the front articulated seat and the rear articulated seat; the hinge arm is hinged with the front hinge seat and the rear hinge seat through a hinge structure; the inner wall of the lower side of the check cavity is provided with an arc-shaped concave surface which is lower than the lower surface of the check boss.
The outer wall of the check boss is provided with a water guide conical surface with wide left and narrow right.
The hinge structure comprises a hinge hole arranged on the hinge arm; the front side wall of the rear hinging seat is provided with a rear limiting hole coaxial with the middle hinging hole; the front side wall of the water outlet joint is provided with a front limiting hole coaxial with the hinge hole, and the hole at the rear end of the front limiting hole is positioned on the rear side wall of the front hinge seat; a hinge shaft matched with the hinge hole is arranged in the hinge hole; the rear end of the hinge shaft penetrates into the rear limiting hole backwards and is propped against the bottom of the rear limiting hole; the front end of the hinge shaft penetrates into the front limiting hole forwards; the front end hole of the front limit hole is in threaded connection with a limit screw matched with the front limit hole; the head of the limit screw is attached to the side wall of the front side of the water outlet joint, and the rear end of the limit screw is propped against the front end of the hinge shaft.
The center of the left side wall of the check plate is provided with a pressure groove coaxial with the water outlet channel; the diameter of the pressure groove is smaller than that of the water outlet channel.
The left side wall of the check plate is provided with an annular caulking groove which is opposite to the check boss; the width of the caulking groove is larger than the thickness of the check boss; a cushion pad matched with the embedded groove is arranged in the embedded groove, and the cushion pad is made of rubber; the caulking groove encloses the pressure groove.
The outer wall of the sealing cover is provided with a sealing part which is jointed with the upper end face of the auxiliary joint.
The inner wall of the port at the upper end of the auxiliary joint is provided with an annular sealing step; the sealing step is provided with a sealing ring sleeved outside the sealing cover, and the upper surface of the sealing ring is attached to the lower surface of the sealing part.
The beneficial effects of the utility model are as follows:
compared with the prior art, when the backflow-preventing check gate valve adopting the structure is used normally, the pressure of the normally flowing water flow can be utilized to push the check plate to the right, so that the check plate swings upwards, the right end port of the water outlet channel is opened, normal conveying of water flow is guaranteed, water flow flowing into the water inlet pipeline in the valve body through the water inlet joint can flow into the water outlet pipeline through the water outlet joint for use, if backflow of the water flow occurs, the water flow in the water outlet pipeline flows towards the direction of the check cavity through the water outlet joint, at the moment, the backflow water flow can be opposed to the water flow flowing rightwards through the water outlet channel, the pressure of the water flow flowing rightwards in the water outlet channel suddenly drops, the gravity of the check plate is larger than the pressure of the water flow flowing rightwards in the water outlet channel, the check plate falls down again to be attached to the right side wall of the check boss, the right end port of the water outlet channel is sealed again, the backflow water flow is stopped directly in the check cavity, the backflow-preventing effect can not be continuously carried out leftwards through the water outlet channel, and the backflow-preventing effect is effectively achieved, and accordingly the problem caused by backflow prevention is effectively avoided.
Drawings
FIG. 1 is a cross-sectional view of an angle of the back-flow prevention check gate valve of the present utility model;
FIG. 2 is another angular cross-sectional view of the back-flow prevention check gate valve of the present utility model;
FIG. 3 is a schematic view showing the structure of the check gate valve for preventing reverse flow according to the present utility model;
fig. 4 is a schematic structural view of the valve body.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and detailed description:
referring to fig. 1 to 4, the present utility model provides a backflow preventing check gate valve, which comprises a valve body 1, a water inlet joint 2 arranged at the left side of the valve body 1, and a water outlet joint 3 arranged at the right side of the valve body 1, wherein a gate plate 4 matched with the valve body 1 is arranged in the valve body 1, a valve rod 5 is arranged at the upper end of the gate plate 4, the upper end of the valve rod 5 penetrates out of the valve body 1 upwards and is provided with a hand wheel 6, and an auxiliary joint 7 communicated with the inner space of the water outlet joint 3 is arranged on the upper surface of the middle part of the water outlet joint 3; the upper end port of the auxiliary joint 7 is in threaded connection with a sealing cover 8; a check chamber 9 is arranged in the middle of the auxiliary joint 7; the check chamber 9 is communicated with the inner space of the valve body 1 through a water outlet channel 10; the right end port of the water outlet channel 10 extends towards the inside of the check cavity 9 to form an annular check boss 11; the front inner wall of the left part of the auxiliary joint 7 is provided with a front hinging seat 12 corresponding to the position of the check boss 11; the rear side inner wall of the left part of the auxiliary joint 7 is provided with a rear hinging seat 13 which is symmetrical with the front hinging seat 12; a check plate 14 which is attached to the right side wall of the check boss 11 is arranged in the check chamber 9; the upper end of the check plate 14 is provided with a hinge arm 15 positioned between the front hinge seat 12 and the rear hinge seat 13; the articulated arm 15 is articulated with the front articulated seat 12 and the rear articulated seat 13 through an articulated structure; the inner wall of the lower side of the check chamber 9 is provided with an arc-shaped concave surface 16, and the concave surface 16 is lower than the lower surface of the check boss 11.
The outer wall of the check boss 11 is provided with a water guide conical surface 17 which is wide in left and narrow in right.
The hinge structure includes a hinge hole 18 provided on the hinge arm 15; the front side wall of the rear hinging seat 13 is provided with a rear limiting hole 19 coaxial with the middle hinging hole 18; the front side wall of the water outlet joint 3 is provided with a front limiting hole 20 coaxial with the hinging hole 18, and the hole at the rear end of the front limiting hole 20 is positioned on the rear side wall of the front hinging seat 12; a hinge shaft 21 matched with the hinge hole 18 is arranged in the hinge hole; the rear end of the hinge shaft 21 penetrates into the rear limit hole 19 backwards and is propped against the bottom of the rear limit hole 19; the front end of the hinge shaft 21 penetrates into the front limiting hole 20 forwards; the front end orifice of the front limit hole 20 is in threaded connection with a limit screw 22 matched with the front limit hole; the head of the limit screw 22 is attached to the side wall of the front side of the water outlet joint 3, and the rear end of the limit screw 22 is propped against the front end of the hinge shaft 21.
The center of the left side wall of the check plate 14 is provided with a pressure groove 23 coaxial with the water outlet channel 10; the diameter of the pressure groove 23 is smaller than that of the water outlet channel 10.
The left side wall of the check plate 14 is provided with an annular caulking groove 24, and the caulking groove 24 is opposite to the check boss 11; the width of the caulking groove 24 is larger than the thickness of the check boss 11; a cushion pad 25 matched with the embedded groove 24 is arranged in the embedded groove, and the cushion pad 25 is made of rubber; the caulking groove 24 encloses the pressure groove 23.
The outer wall of the sealing cover 8 is provided with a sealing part 26 which is jointed with the upper end face of the auxiliary joint 7.
The inner wall of the port at the upper end of the auxiliary joint 7 is provided with an annular sealing step 27; the sealing step 27 is provided with a sealing ring 28 sleeved outside the sealing cover 8, and the upper surface of the sealing ring 28 is attached to the lower surface of the sealing part 26.
The application method of the utility model is as follows:
the water inlet joint 2 is used for connecting a water inlet pipeline, the water outlet joint 3 is used for connecting a water outlet pipeline, when a gate valve needs to be opened, the valve rod 5 can be rotated through the hand wheel, under the condition that the gate plate 4 cannot rotate, the gate plate 4 can move upwards along the thread track of the outer wall of the lower part of the valve rod 5, after the gate plate 4 moves upwards, the water inlet joint 2 is communicated with the water outlet joint 3, the gate valve is in an open state, and water flow in the water inlet pipeline can flow into the valve body 1 through the water inlet joint 2 and then flow into the water outlet channel 10.
Along with the continuous inflow of rivers to the water channel 10, the water pressure in the water channel 10 is then greater than the gravity of check plate 14, and the rivers in the water channel 10 then can promote check plate 14 rightward at this moment, make check plate 14 upwards swing with articulated shaft 21 as the center, and after check plate 14 put up, check plate 14 no longer laminates with check boss 11 right side lateral wall, and the right-hand member port of water channel 10 is in the open state, and the rivers in the water channel 10 then can directly flow into check cavity 9, finally flows into the outlet pipe way through water joint 3 for use.
Because the downside inner wall of check cavity 9 is equipped with a concave surface 16 that is the arcuation, concave surface 16 is less than check boss 11 lower surface, the existence of concave surface 16 can effectively increase the space of check cavity 9 lower part, the first time that port opened at the right-hand member of play water channel 10, rivers in the water channel 10 can be through the quick inflow of check cavity 9 lower part space to check cavity 9, guarantee the rivers flow, realize the transportation of large-traffic, avoid the flap 14 to put forward the angle and open completely when the flap is less, the circumstances that leads to the rivers in the water channel 10 to be difficult to gush into the check cavity 9 fast, if the circumstances that rivers take place the backward flow, rivers in the outlet pipe then can flow to check cavity 9 direction through play water connector 3, this backward flow rivers then can be with the water channel 10 to the right direction counter-flow, lead to the pressure decline of water channel 10 to the right-direction flow, at this moment the gravity of flap 14 self is greater than the pressure of water channel 10 in the right-hand flow, flap 14 whereabouts resets, laminate with the boss 11 right side wall again, cover the circumstances that the water channel 10 is difficult to flow into the check cavity 9 fast, the circumstances that can's the reverse flow is stopped, the reverse flow is stopped to the sealed up through the water channel is sealed to the adverse current in the backward flow channel 10, thereby the problem is prevented from directly flowing the water channel is stopped to the effect is avoided to the side, the problem is stopped to be directly to the water flow through the back flow, and is stopped to the problem is stopped.
When sealed lid 8 spiro union is in auxiliary joint 7 upper end port, sealed lid 8 then can effectively restrict the upward swing angle of check plate 14 through self lower terminal surface, makes the upward swing angle of check plate 14 be less than 180 degrees, can utilize self gravity whereabouts to reset when self gravity is greater than the pressure of the rivers that flow to the right side in the play water channel 10, again with the laminating mutually of check boss 11 right side wall to shield the sealing with play water channel 10 right-hand member port again, the leakproofness when check plate 14 plays the non return effect is effectively guaranteed.
The outer wall of the check boss 11 is provided with a water guide conical surface 17 which is wide left and narrow right, when the water flow in the water outlet channel 10 pushes the check plate 14 rightwards, the water flow flowing into the space between the left side wall of the check plate 14 and the right side wall of the check boss 11 can quickly flow into the check chamber 9 along the water guide conical surface 17, so that the water flow flowing out from the right end port of the water outlet channel 10 can quickly spread outwards to enter the check chamber 9 through the water guide conical surface 17, the situation that the water flow in the water outlet channel 10 is difficult to quickly surge into the check chamber 9 due to the fact that the water outlet channel 10 is not fully opened when the upper swing angle of the check plate 14 is smaller is further avoided, the flow of the water flow is further improved, and the large-flow water delivery effect is effectively realized.
The hinge structure comprises a hinge hole 18 arranged on a hinge arm 15, a rear limit hole 19 coaxial with the middle hinge hole 18 is arranged on the front side wall of the rear hinge seat 13, a front limit hole 20 coaxial with the hinge hole 18 is arranged on the front side wall of the water outlet joint 3, a rear end hole of the front limit hole 20 is arranged on the rear side wall of the front hinge seat 12, a hinge shaft 21 matched with the front limit hole is arranged in the hinge hole 18, the rear end of the hinge shaft 21 penetrates into the rear limit hole 19 backwards and is abutted against the bottom of the rear limit hole 19, the front end of the hinge shaft 21 penetrates into the front limit hole 20 forwards, a limit screw 22 matched with the front end hole of the front limit hole 20 is screwed into the front end hole of the front limit screw 22, the head of the limit screw 22 is attached to the front side wall of the water outlet joint 3, the rear end of the limit screw 22 is abutted against the front end of the hinge shaft 21, the hinge shaft 21 is fixed in a way, the self disassembly and assembly of the check plate 14 are facilitated, when the check plate 14 is required to be assembled, the check plate 14 is convenient to be maintained and replaced, the seal cover 8 only needs to be screwed out from the upper end port of the auxiliary joint 7, then the auxiliary joint 7 is clamped into the cavity 9 through the auxiliary joint 7, the hinge seat 9 can be assembled with the hinge seat 15 very simply, and the whole process can be assembled with the hinge seat 15 by utilizing the hinge arm 15.
The center of the left side wall of the check plate 14 is provided with a pressure groove 23 which is coaxial with the water outlet channel 10, the diameter of the pressure groove 23 is smaller than that of the water outlet channel 10, the pressure groove 23 can not only increase the pressure area of the left side wall of the check plate 14 and facilitate the water flow in the water outlet channel 10 to push the check plate to the right, but also the pressure groove 23 can concentrate the water flow in the water outlet channel 10 in the middle of the check plate 14, so that the water pressure is concentrated on the middle of the check plate 14, and the smoothness of pushing the check plate 14 is further improved.
The left side wall of the check plate 14 is provided with an annular caulking groove 24, the caulking groove 24 is opposite to the check boss 11, the width of the caulking groove 24 is larger than the thickness of the check boss 11, a cushion pad 25 matched with the caulking groove 24 is arranged in the caulking groove 24, the cushion pad 25 is made of rubber, the caulking groove 24 encloses the pressure groove 23, the cushion pad 25 has a buffering effect when the check plate 14 falls down and resets to be attached to the right side wall of the check boss 11, the situation that the left side wall of the check plate 14 and the right side wall of the check boss 11 are easy to cause abrasion due to direct impact is avoided, and the cushion pad 25 can effectively ensure tightness between the cushion pad and the right side wall of the check boss 11 when the check plate 14 is subjected to check water flow, so that water leakage is effectively avoided.
The outer wall of the sealing cover 8 is provided with a sealing part 26 which is jointed with the upper end face of the auxiliary joint 7, and the joint between the lower surface of the sealing part 26 and the upper end face of the auxiliary joint 7 can form a seal, so that the tightness of the sealing cover when the sealing cover is screwed in the upper end port of the auxiliary joint 7 can be effectively improved.
The inner wall of the upper end port of the auxiliary joint 7 is provided with an annular sealing step 27, the sealing step 27 is provided with a sealing ring 28 sleeved outside the sealing cover 8, the upper surface of the sealing ring 28 is attached to the lower surface of the sealing part 26, and the sealing performance of the sealing cover 8 in the upper end port of the auxiliary joint 7 can be further improved due to the sealing ring 28.
Claims (7)
1. The utility model provides a prevent check gate valve against current, includes the valve body, locates the left water inlet joint of valve body and locates the water outlet joint on valve body right side, is equipped with rather than assorted flashboard in the valve body, and the flashboard upper end is equipped with the valve rod, and the valve rod upper end upwards wears out to the valve body outside and is equipped with the hand wheel, its characterized in that: the upper surface of the middle part of the water outlet joint is provided with an auxiliary joint communicated with the inner space of the water outlet joint; the upper end port of the auxiliary joint is in threaded connection with a sealing cover; a check cavity is arranged in the middle of the auxiliary joint; the check cavity is communicated with the inner space of the valve body through a water outlet channel; the right end port of the water outlet channel extends out of the check cavity to form an annular check boss; the inner wall of the front side of the left part of the auxiliary joint is provided with a front hinging seat corresponding to the position of the check boss; the inner wall of the rear side of the left part of the auxiliary joint is provided with a rear hinging seat which is symmetrical with the front hinging seat; a check plate attached to the right side wall of the check boss is arranged in the check cavity; the upper end of the check plate is provided with an articulated arm positioned between the front articulated seat and the rear articulated seat; the hinge arm is hinged with the front hinge seat and the rear hinge seat through a hinge structure; the inner wall of the lower side of the check cavity is provided with an arc-shaped concave surface which is lower than the lower surface of the check boss.
2. The backflow preventing check gate valve of claim 1, wherein: the outer wall of the check boss is provided with a water guide conical surface with wide left and narrow right.
3. The backflow preventing check gate valve of claim 1, wherein: the hinge structure comprises a hinge hole arranged on the hinge arm; the front side wall of the rear hinging seat is provided with a rear limiting hole coaxial with the middle hinging hole; the front side wall of the water outlet joint is provided with a front limiting hole coaxial with the hinge hole, and the hole at the rear end of the front limiting hole is positioned on the rear side wall of the front hinge seat; a hinge shaft matched with the hinge hole is arranged in the hinge hole; the rear end of the hinge shaft penetrates into the rear limiting hole backwards and is propped against the bottom of the rear limiting hole; the front end of the hinge shaft penetrates into the front limiting hole forwards; the front end hole of the front limit hole is in threaded connection with a limit screw matched with the front limit hole; the head of the limit screw is attached to the side wall of the front side of the water outlet joint, and the rear end of the limit screw is propped against the front end of the hinge shaft.
4. The backflow preventing check gate valve of claim 1, wherein: the center of the left side wall of the check plate is provided with a pressure groove coaxial with the water outlet channel; the diameter of the pressure groove is smaller than that of the water outlet channel.
5. The backflow preventing check gate valve of claim 4, wherein: the left side wall of the check plate is provided with an annular caulking groove which is opposite to the check boss; the width of the caulking groove is larger than the thickness of the check boss; a cushion pad matched with the embedded groove is arranged in the embedded groove, and the cushion pad is made of rubber; the caulking groove encloses the pressure groove.
6. The backflow preventing check gate valve of claim 1, wherein: the outer wall of the sealing cover is provided with a sealing part which is jointed with the upper end face of the auxiliary joint.
7. The backflow preventing check gate valve of claim 6, wherein: the inner wall of the port at the upper end of the auxiliary joint is provided with an annular sealing step; the sealing step is provided with a sealing ring sleeved outside the sealing cover, and the upper surface of the sealing ring is attached to the lower surface of the sealing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321295634.5U CN219774896U (en) | 2023-05-23 | 2023-05-23 | Backflow-preventing check gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321295634.5U CN219774896U (en) | 2023-05-23 | 2023-05-23 | Backflow-preventing check gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219774896U true CN219774896U (en) | 2023-09-29 |
Family
ID=88103735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321295634.5U Active CN219774896U (en) | 2023-05-23 | 2023-05-23 | Backflow-preventing check gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219774896U (en) |
-
2023
- 2023-05-23 CN CN202321295634.5U patent/CN219774896U/en active Active
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