CN216789332U - Flow-limiting check valve - Google Patents
Flow-limiting check valve Download PDFInfo
- Publication number
- CN216789332U CN216789332U CN202220087582.1U CN202220087582U CN216789332U CN 216789332 U CN216789332 U CN 216789332U CN 202220087582 U CN202220087582 U CN 202220087582U CN 216789332 U CN216789332 U CN 216789332U
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- Prior art keywords
- water
- flow
- gland
- limiting
- sealing ring
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 150
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 210000004907 gland Anatomy 0.000 claims abstract description 57
- 230000000670 limiting effect Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model discloses a current-limiting check valve which comprises a valve core, a check device, a current-limiting sealing ring and a floating gland, wherein the valve core comprises a water inlet end and a water outlet end, and is provided with a water through hole, the check device is arranged at the water outlet end, so that the water through hole is communicated in a one-way mode from the water inlet end to the water outlet end, the water inlet end is provided with the current-limiting sealing ring outside the water through hole, the current-limiting sealing ring blocks the water through hole, a water passing gap is reserved in the water through hole, the water inlet end is provided with a gland support, and the floating gland is movably arranged on the gland support, so that the current-limiting sealing ring is pressed along with water pressure when water flows from the water inlet end to the water outlet end, and the water passing gap is reduced after the current-limiting sealing ring is deformed. The utility model makes the flow-limiting check valve have better flow-limiting effect.
Description
Technical Field
The utility model relates to the technical field of check valves, in particular to a flow-limiting check valve.
Background
The check valve is an automatic open and close valve without manpower or other operations, is installed in a fluid pipeline, is driven to open or close by pressure generated when fluid in the pipeline flows, has only one flow direction, and is mainly used for preventing the backflow of the fluid in the pipeline.
In order to make the flow rate of fluid flowing in the forward direction more stable, the existing check valve with the flow limiting function has the function of limiting the flow, when the fluid flows in the forward direction, the larger the forward flowing water pressure of the fluid is, the smaller the opening amplitude is correspondingly, but the current check valve has a poor flow limiting effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a flow-limiting check valve, which overcomes the defects and has better flow-limiting effect.
In order to achieve the above purpose, the solution of the utility model is as follows: the valve core comprises a water inlet end and a water outlet end, a water passing hole is formed in the valve core, the non-return device is arranged at the water outlet end, the water passing hole is communicated with the water outlet end in a one-way mode through the water inlet end, the water inlet end is provided with a flow-limiting sealing ring outside the water passing hole, the flow-limiting sealing ring blocks the water passing hole and enables the water passing hole to be provided with a water passing gap, the water inlet end is provided with a pressing cover support, and the floating pressing cover is movably mounted on the pressing cover support so as to press the flow-limiting sealing ring along with water pressure when water flows from the water inlet end to the water outlet end, and the flow-limiting sealing ring is deformed and then is reduced to the water passing gap.
Furthermore, non-return means is including floating the gasket, by the outside gasket guide post that extends of play water end, floating the gasket cover and putting on the gasket guide post to along with the rivers along the gasket guide post slides, and then follow the end of intaking is opened or the closing cap along with the rivers flow direction the water hole of crossing.
Furthermore, a sealing piece mounting hole is formed in the floating sealing piece, the floating sealing piece is sleeved on the sealing piece guide column through the sealing piece mounting hole, and a convex shoulder is radially protruded out of one end, far away from the valve core, of the sealing piece guide column to limit the sliding stroke of the floating sealing piece in the direction far away from the valve core.
Furthermore, the valve core is provided with a boss protruding from the middle of the water inlet end, the flow-limiting sealing ring is sleeved on the periphery of the boss, and the water passing hole is positioned on the periphery of the boss.
Furthermore, the gland support linearly extends from the boss to the direction far away from the valve core, the floating gland is provided with a gland mounting hole, the floating gland is arranged on the periphery of the gland support through the gland mounting hole in a sliding sleeve mode, and one end, facing the valve core, of the floating gland is provided with a butt end used for pressing down the flow-limiting sealing ring.
Furthermore, the gland support comprises at least two guide rods linearly extending from the bosses to the direction far away from the valve core, clamping hooks are formed at the tail ends of the guide rods, the gland mounting holes are sleeved on the peripheries of the guide rods at the same time, and the clamping hooks limit the sliding stroke of the floating gland to the direction far away from the valve core.
Further, the valve core is cylindrical, and a valve core sealing ring is arranged on the periphery of the valve core so that the valve core and the inner wall of the pipeline form sealing after the valve core is inserted into the pipeline.
After the scheme is adopted, the utility model has the beneficial effects that: the valve core comprises a water inlet end and a water outlet end, and is provided with a water passing hole, the non-return device is arranged at the water outlet end to enable the water passing hole to be communicated in a one-way mode from the water inlet end to the water outlet end, the water inlet end is provided with a current-limiting sealing ring outside the water passing hole, the current-limiting sealing ring blocks the water passing hole and enables the water passing hole to be provided with a water passing gap, the water inlet end is provided with a gland support, and a floating gland is movably arranged on the gland support to press the current-limiting sealing ring along with water pressure when water flows from the water inlet end to the water outlet end, so that the current-limiting sealing ring is deformed and then is reduced, further, when the water flow in a pipeline flows in the forward direction, the water pressure pushes the floating gland to move towards the current-limiting sealing ring, the floating gland presses the current-limiting sealing ring, and then the current-limiting sealing ring is deformed under the pressure, the water flow gap is reduced, the water pressure when the reduction degree of the water flow gap and the water flow forward flow are in positive correlation, so that the effect of flow limitation is achieved, the mode that the flow-limiting sealing ring is deformed by directly pushing by the water pressure is more sensitive to the feedback of the change of the water pressure, and a better flow-limiting effect is achieved.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic view of an assembly structure of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention in a non-return state;
FIG. 4 is a schematic cross-sectional view of the current limiting device according to the present invention.
Description of reference numerals: 1-valve core, 2-non-return device, 3-flow-limiting sealing ring, 4-floating gland, 5-water inlet end, 6-water outlet end, 7-water through hole, 8-water through gap, 9-gland support, 10-floating sealing sheet, 11-sealing sheet guide column, 12-sealing sheet mounting hole, 13-shoulder, 14-boss, 15-gland mounting hole, 16-abutting end, 17-guide rod, 18-trip, 19-valve core sealing ring and 20-water retaining surface.
Detailed Description
The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a current-limiting check valve, as shown in fig. 1-4, comprising a valve core 1, a check device 2, a current-limiting sealing ring 3 and a floating gland 4, wherein the valve core 1 is cylindrical, a valve core sealing ring 19 is arranged on the periphery of the valve core 1, so that the valve core 1 is sealed with the inner wall of a pipeline after the valve core 1 is inserted into the pipeline, the valve core 1 comprises a water inlet end 5 and a water outlet end 6, and is provided with a water through hole 7, the water inlet end 5 is communicated with the water outlet end 6 through the water through hole 7, the check device 2 is arranged at the water outlet end 6, so that the water through hole 7 is communicated from the water inlet end 5 to the water outlet end 6 in a one-way manner, water flow at one side of the water inlet end 5 in the pipeline can flow to one side of the water outlet end 6 through the water through hole 7 and is limited from flowing in the reverse direction, so as to prevent vacuum suck-back in the pipeline, the check device 2 can be a check structure on any existing check valve, without specific limitation, in this embodiment, the non-return device 2 includes a floating sealing sheet 10 and a sealing sheet guiding column 11 extending outward from the water outlet end 6, the floating sealing sheet 10 is sleeved on the sealing sheet guiding column 11 to slide along the sealing sheet guiding column 11 with water flow, and further the water through hole 7 is opened or closed from the water inlet end 5 along with the flow of water flow, as shown in fig. 4, it is important to open the water through hole 7 when the water flow flows from the water inlet end 5 to the water outlet end 6 in a forward direction, as shown in fig. 3, it is important to close the water through hole 7 when the water flow flows in a reverse direction, the floating sealing sheet 10 is specifically installed in a manner that a sealing sheet installation hole 12 is provided on the floating sealing sheet 10, the floating sealing sheet 10 is sleeved on the sealing sheet guiding column 11 through the sealing sheet installation hole 12, and a shoulder 13 radially protrudes outward from one end of the sealing sheet guiding column 11 away from the valve core 1, so as to limit the sliding stroke of the floating sealing sheet 10 in the direction away from the valve core 1 and prevent the floating sealing sheet 10 from separating from the sealing sheet guide column 11 to cause the non-return device 2 to lose efficacy;
the water inlet end 5 is provided with a current-limiting sealing ring 3 outside the water passing hole 7, the current-limiting sealing ring 3 blocks the water passing hole 7 and enables the water passing hole 7 to leave a water passing gap 8, the water inlet end 5 is provided with a gland support 9, the floating gland 4 is movably mounted on the gland support 9 so as to press the current-limiting sealing ring 3 along with water pressure when water flows from the water inlet end 5 to the water outlet end 6, the current-limiting sealing ring 3 is reduced after being deformed, the water passing gap 8 is mainly reduced by combining with a figure 4, when the water flows in a pipeline from the water inlet end 5 to the water outlet end 6 in a forward direction, the floating gland 4 is pushed by water pressure to move towards the current-limiting sealing ring 3, the floating gland 4 presses the current-limiting sealing ring 3, the current-limiting sealing ring 3 is pressed to deform, the water passing gap 8 is reduced, the reduction degree of the water passing gap 8 is positively correlated with the water pressure when the water flows in the forward direction, therefore, the floating gland 4 is provided with the water retaining surface 20 with a proper area according to actual needs, so that water pressure acts on the water retaining surface 20 when water flows, the floating gland 4 is pushed to generate proper pressure, the feedback of water pressure change is more sensitive compared with a mode of directly pushing the flow-limiting sealing ring 3 by using the water pressure to generate deformation, and the flow-limiting effect is better, specifically, in the embodiment, the valve core 1 is convexly provided with the boss 14 in the middle of the water inlet end 5, the flow-limiting sealing ring 3 is sleeved on the periphery of the boss 14, the water through holes 7 are positioned on the periphery of the boss 14, the number of the water through holes 7 is not limited, at least one water through hole is arranged, when the water through holes 7 are arranged, each water through hole 7 surrounds the periphery of the boss 14, and the gland support 9 linearly extends from the boss 14 to the direction far away from the valve core 1, the utility model discloses a floating seal ring, including valve core 1, unsteady gland 4, gland support, guide bar 17, floating gland 4, trip 18, floating gland orientation the one end of valve core 1 is formed with and is used for pushing down the butt end 16 of current-limiting sealing ring, unsteady gland 4 is provided with gland mounting hole 15, unsteady gland 4 passes through gland mounting hole 15 slip cover is put gland support 9 periphery, specifically, it is important to combine to show in fig. 1, fig. 2, gland support 9 includes two at least follows boss 14 is to keeping away from the guide bar 17 that the direction of valve core 1 straight line extends forms, the end of guide bar 17 all is formed with trip 18, unsteady gland 4 mounting hole 15 overlaps simultaneously each guide bar 17 is peripheral, trip 18 is spacing unsteady gland 4 is to keeping away from the gliding stroke of valve core 1 direction prevents unsteady gland 4 roll-off guide bar 17, unsteady gland orientation the one end of valve core 1 is formed with and is used for pushing down the butt end 16 of current-limiting sealing ring.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present invention, and all equivalent changes made in the design key point of the present invention fall within the protection scope of the present invention.
Claims (7)
1. A flow-limiting check valve is characterized in that: the water flow limiting valve comprises a valve core (1), a non-return device (2), a flow limiting sealing ring (3) and a floating gland (4), wherein the valve core (1) comprises a water inlet end (5) and a water outlet end (6) and is provided with a water through hole (7), the non-return device (2) is arranged at the water outlet end (6) to enable the water through hole (7) to be communicated from the water inlet end (5) to the water outlet end (6) in a one-way mode, the water inlet end (5) is provided with the flow limiting sealing ring (3) outside the water through hole (7), the flow limiting sealing ring (3) blocks the water through hole (7) and enables the water through hole (7) to leave a water through gap (8), the water inlet end (5) is provided with a gland support (9), the floating gland (4) is movably arranged on the gland support (9) to press the flow limiting sealing ring (3) along with water when water flows from the water inlet end (5) to the water outlet end (6), the water passing gap (8) is reduced after the current limiting sealing ring (3) is deformed.
2. A flow-limiting check valve as defined in claim 1, wherein: non-return means (2) including unsteady gasket (10), by go out outside gasket guide post (11) that extend of water end (6), unsteady gasket (10) cover is put on gasket guide post (11) to follow rivers slide gasket guide post (11), and then follow it opens or the closing cap along with the rivers flow direction to intake end (5) cross water hole (7).
3. A flow-limiting check valve as defined in claim 2, wherein: be provided with gasket mounting hole (12) on unsteady gasket (10), unsteady gasket (10) pass through gasket mounting hole (12) cover is put on gasket guide post (11), gasket guide post (11) are kept away from the radial evagination of one end of case (1) has convex shoulder (13), with spacing unsteady gasket (10) are to keeping away from the gliding stroke of case (1) direction.
4. A flow-limiting check valve as defined in claim 1, wherein: the valve core (1) is arranged in the middle of the water inlet end (5) in a protruding mode to form a boss (14), the flow-limiting sealing ring (3) is sleeved on the periphery of the boss (14), and the water passing hole (7) is located on the periphery of the boss (14).
5. A flow-limiting check valve as defined in claim 4, wherein: the gland support (9) is linearly extended from the boss (14) to the direction far away from the valve core (1), the floating gland (4) is provided with a gland mounting hole (15), the floating gland (4) is slidably sleeved on the periphery of the gland support (9) through the gland mounting hole (15), and one end of the floating gland, facing the valve core (1), is provided with a butt joint end (16) used for pressing down the flow-limiting sealing ring.
6. A flow-limiting check valve as defined in claim 5, wherein: gland support (9) include two at least follow boss (14) to keeping away from the direction straight line extension's of case (1) guide bar (17) form, the end of guide bar (17) all is formed with trip (18), gland mounting hole (15) cover is respectively simultaneously guide bar (17) are peripheral, trip (18) are spacing float gland (4) to keeping away from the gliding stroke of case (1) direction.
7. A flow-limiting check valve as defined in claim 1, wherein: the valve core (1) is cylindrical, and a valve core sealing ring (19) is arranged on the periphery of the valve core (1) so that the valve core (1) and the inner wall of a pipeline form sealing after the valve core (1) is inserted into the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220087582.1U CN216789332U (en) | 2022-01-13 | 2022-01-13 | Flow-limiting check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220087582.1U CN216789332U (en) | 2022-01-13 | 2022-01-13 | Flow-limiting check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216789332U true CN216789332U (en) | 2022-06-21 |
Family
ID=82013498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220087582.1U Active CN216789332U (en) | 2022-01-13 | 2022-01-13 | Flow-limiting check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216789332U (en) |
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2022
- 2022-01-13 CN CN202220087582.1U patent/CN216789332U/en active Active
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| GR01 | Patent grant |