CN219911875U - Flow-controllable backflow preventer - Google Patents
Flow-controllable backflow preventer Download PDFInfo
- Publication number
- CN219911875U CN219911875U CN202321294889.XU CN202321294889U CN219911875U CN 219911875 U CN219911875 U CN 219911875U CN 202321294889 U CN202321294889 U CN 202321294889U CN 219911875 U CN219911875 U CN 219911875U
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- Prior art keywords
- valve
- valve body
- flow
- fixed
- backflow preventer
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- 238000007789 sealing Methods 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a flow-controllable backflow preventer, which comprises a valve body, wherein a discharge pipe is arranged at the lower side of the valve body, a mounting cavity is arranged in the valve body, four guide pipes are arranged at the outer side of the mounting cavity in a rectangular shape, a central column is arranged on the valve body corresponding to the guide pipes, the upper end of the central column is fixedly connected with the mounting cavity and the valve body through a nut, a sealing valve consists of a valve clack and a mounting frame, a spring is arranged in the mounting frame, a supporting rod is fixed at the right side of the mounting frame of the left sealing valve, the right end of the supporting rod is pressed on the mounting frame of the right sealing valve, the left side of the mounting cavity is connected with a fixing ring through threads, and the fixing ring is pressed on the right sealing valve.
Description
Technical Field
The utility model relates to the technical field of backflow preventers, in particular to a flow-controllable backflow preventer.
Background
The existing backflow preventer which is adopted in a large quantity consists of a water inlet check valve, a water outlet check valve and a water drain valve, wherein the valve is in a full-open state when a pipeline supplies water, the flow of an outlet is uncontrollable, and when the pressure of the backflow preventer fluctuates greatly due to rapid change of water consumption in the downstream, the backflow preventer can generate a water drain action, and the water drain port drains water to drain the pressure of the middle cavity.
The Chinese patent discloses a flow-controllable backflow device, (grant bulletin No. CN 202182218U), the pressure opening of the patent technology realizes water supply, and as the opening of the water inlet stop check valve plate is adjustable, the rapid change of the pipeline pressure can not be caused when the downstream water-using facility is frequently opened and closed, so that the water leakage can not be caused, but the valve clack is arranged in the pipeline, and the overhaul is inconvenient. Therefore, the utility model provides a flow-controllable backflow preventer to solve the problems in the prior art.
Disclosure of Invention
The utility model aims to provide a flow-controllable backflow preventer so as to solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the flow-controllable backflow preventer comprises a valve body, wherein a discharge pipe is arranged at the lower side of the valve body, an installation cavity is arranged in the valve body, four guide pipes are arranged at the outer side of the installation cavity in a rectangular shape, a central column is arranged on the valve body corresponding to the guide pipes, the installation cavity is fixedly connected with the valve body through a nut at the upper end of the central column, the lower side of the cross section of the installation cavity in the left-right direction is in a V shape, and closed valves are arranged at the left side and the right side of the installation cavity;
the sealing valve consists of a valve clack and a mounting frame, a spring is arranged in the mounting frame, a guide groove is formed in the inner side of the mounting frame of the sealing valve, a sliding block is fixed on the outer side of the mounting frame of the sealing valve and is in sliding connection with the guide groove, so that the sealing valve can be stabilized, a supporting rod is fixed on the right side of the mounting frame of the left sealing valve, the right end of the supporting rod is pressed on the mounting frame of the right sealing valve, the left side of the mounting cavity is connected with a fixing ring through threads, and the fixing ring is pressed on the right sealing valve to help fix the sealing valve;
the utility model provides a sliding connection has the locating rack in the upside vaulting pole, and one side of locating rack is fixed with the rack, and rack meshing has the gear, gear fixed connection adjusting screw, has cup jointed the sleeve pipe on the adjusting screw, and sheathed tube top is equipped with fixation nut, and fixation nut passes through threaded connection and installs on the cavity, the below of locating rack is equipped with the shifting block, and left side shifting block is fixed with the valve clack of sealing the valve, and right side shifting block is fixed with the spliced pole of valve clack an organic whole, and during the regulation flow, rotates fixation nut, upwards lifts the sleeve pipe, rotates adjusting screw, drives the locating rack through the gear and moves about, and then changes the distance with the shifting block for sealing the valve at the during operation, the biggest open position receives the restriction of shifting block, changes the gap size between valve clack and the installation cavity downside, and then changes maximum flow.
Preferably, the guide tube is provided with a clamping interface near the lower end, the valve body is provided with an inserting block corresponding to the clamping interface, and the inserting block can be inserted into the clamping interface to fix the height of the mounting cavity.
Preferably, a drain pipe is fixed at the lower side of the installation cavity, and the drain pipe is inserted into the discharge pipe, so that the stability after the installation is improved.
Preferably, the support rods are uniformly arranged along the inner side of the valve body, and part of the support rods slide in the guide grooves.
Preferably, the cross sections of the inner side and the outer side of the sleeve are hexagonal, the upper side of the installation cavity is provided with a hexagonal clamping groove corresponding to the sleeve, and the angle of the adjusting screw is fixed.
Preferably, the lower right end of the locating rack is rotationally connected with a clamping block, a torsion spring is arranged at the rotating position, and the upper right side of the clamping block is clamped on the locating rack, so that the clamping block cannot rotate after rotating to a vertical position.
Compared with the prior art, the utility model has the beneficial effects that:
1. the valve clack of the vulnerable part is integrally arranged in the mounting cavity, so that the maintenance is convenient.
2. According to the utility model, the maximum section of the water flow can be adjusted by rotating the adjusting screw, and the opening degree can be adjusted.
Drawings
Fig. 1 is a schematic structural view of a flow-controllable backflow preventer.
Fig. 2 is a schematic diagram of an explosion structure of a flow-controllable backflow preventer.
Fig. 3 is a schematic cross-sectional front view of a flow-controllable backflow preventer.
Fig. 4 is a schematic top view of an adjusting screw in a flow-controllable backflow preventer.
In the figure: 1. a valve body; 2. installing a cavity; 3. a guide tube; 4. a card interface; 5. inserting blocks; 6. a center column; 7. closing the valve; 8. a guide groove; 9. a brace rod; 10. a fixing ring;
11. a shifting block; 12. a positioning frame; 13. adjusting a screw; 14. a fixing nut; 15. a clamping block; 16. a drain pipe; 17. a sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 4, in the embodiment of the utility model, a flow-controllable backflow preventer comprises a valve body 1, wherein a discharge pipe is arranged at the lower side of the valve body 1, a mounting cavity 2 is arranged in the valve body 1, four guide pipes 3 are arranged at the outer sides of the mounting cavity 2 in a rectangular shape, a central column 6 is arranged on the valve body 1 corresponding to the guide pipes 3, the mounting cavity 2 is fixedly connected with the valve body 1 through nuts at the upper end of the central column 6, a clamping interface 4 is arranged at the position, close to the lower end, of the guide pipes 3, a plug 5 is arranged on the valve body 1 corresponding to the clamping interface 4, the plug 5 can be inserted into the clamping interface 4 to fix the height of the mounting cavity 2, the lower side of the cross section of the mounting cavity 2 in the left-right direction is in a V shape, a closed valve 7 is arranged at the left side and the right side of the mounting cavity 2, a drain pipe 16 is fixed at the lower side of the mounting cavity 2, and the drain pipe 16 is inserted into the discharge pipe to improve the stability after being fixed;
the sealing valve 7 consists of a valve clack and a mounting frame, a spring is arranged in the mounting frame, a guide groove 8 is formed in the inner side of the mounting cavity 2, a sliding block is fixed on the outer side of the mounting frame of the sealing valve 7 and is slidably connected in the guide groove 8 to help stabilize the sealing valve 7, a supporting rod 9 is fixed on the right side of the mounting frame of the left sealing valve 7, the right end of the supporting rod 9 is pressed on the mounting frame of the right sealing valve 7, the left side of the mounting cavity 2 is connected with a fixing ring 10 through threads, and the fixing ring 10 is pressed on the right sealing valve 7 to help fix the sealing valve 7;
the utility model discloses a valve, including valve body 1, support rod 9, rack, gear, adjusting screw 13, sleeve pipe 17, fixing nut 14, adjusting screw 14, setting up cavity 2's upside corresponds sleeve pipe 17 and is equipped with the hexagon draw-in groove, fixes adjusting screw 13's angle, and fixing nut 14 installs cavity 2 through threaded connection, the below of locating rack 12 is equipped with shifting block 11, and left side shifting block 11 is fixed with the valve clack of sealing valve 7, and right side shifting block 11 is fixed with the spliced pole of valve clack an organic whole, the right lower extreme rotation of locating rack 12 is connected with fixture block 15, and the rotation department is equipped with the torsional spring, and the upper right side joint of fixture block 15 is on locating rack 12 for fixture block 15 just can not rotate after rotating the vertical position, and when adjusting flow, rotates fixing nut 14, upwards lifts sleeve pipe 17, and the shifting block 13, and the most open side is changed the big gap with the valve clack through the setting up of gear 11, and then changes the big gap with the valve clack of the setting up of the valve 7 when the valve is installed to the big gap of the side of the change.
The working principle of the utility model is as follows: during installation, the right-side sealing valve 7 is inserted into the installation cavity 2 along the guide groove 8, then the left-side sealing valve 7 is placed, the supporting rod 9 is pressed on the right-side sealing valve 7, meanwhile, the clamping block 15 on the right lower side of the positioning frame 12 is swept over the right-side shifting block 11 and then is restored to a vertical state, the sealing valve 7 is fixed by rotating the fixing ring 10, and then the sealing valve is inserted into the central column 6 through the guide pipe 3, and the installation cavity 2 is fixedly connected with the valve body 1 through the nut.
When the flow is regulated, the fixing nut 14 is rotated, the sleeve 17 is lifted upwards, the adjusting screw 13 is rotated, the positioning frame 12 is driven to move left and right through the gear, and then the distance between the adjusting screw and the shifting block 11 is changed, so that the maximum opening position of the closed valve 7 is limited by the shifting block 11 when the closed valve works, the size of a gap between the valve clack and the lower side of the installation cavity 2 is changed, and the maximum flow is further changed.
During maintenance, the nut at the upper end of the central column 6 is unscrewed, the mounting cavity 2 is lifted upwards, the plug 5 is inserted into the clamping interface 4, and the sealing valve 7 can be replaced after the plug is fixed.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The utility model provides a controllable backflow preventer of flow, includes valve body (1), and the downside of valve body (1) is equipped with the discharge pipe, its characterized in that, be equipped with installation cavity (2) in valve body (1), the outside of installation cavity (2) is the rectangle and is equipped with four stand bars (3), corresponds stand bar (3) on valve body (1) and is equipped with center post (6), and the upper end of center post (6) is through nut with installation cavity (2) and valve body (1) fixed connection, the cross-section downside of the left and right sides direction of installation cavity (2) is the V type, and the left and right sides of installation cavity (2) all is equipped with closed valve (7);
the sealing valve (7) consists of a valve clack and a mounting frame, a spring is arranged in the mounting frame, a guide groove (8) is formed in the inner side of the mounting cavity (2), a sliding block is fixed on the outer side of the mounting frame of the sealing valve (7), the sliding block is slidably connected in the guide groove (8), a supporting rod (9) is fixed on the right side of the mounting frame of the left sealing valve (7), the right end of the supporting rod (9) is pressed on the mounting frame of the right sealing valve (7), and the left side of the mounting cavity (2) is connected with a fixing ring (10) through threads;
the utility model provides a sliding connection has locating rack (12) in upside vaulting pole (9), and one side of locating rack (12) is fixed with the rack, and rack meshing has the gear, and gear fixed connection adjusting screw (13), sleeve pipe (17) have been cup jointed on adjusting screw (13), and the top of sleeve pipe (17) is equipped with fixation nut (14), and on fixation nut (14) pass through threaded connection installation cavity (2), the below of locating rack (12) is equipped with shifting block (11), and left side shifting block (11) are fixed with the valve clack of sealing valve (7), and right side shifting block (11) are fixed with the spliced pole of valve clack an organic whole.
2. The flow-controllable backflow preventer according to claim 1, wherein the guide tube (3) is provided with a clamping port (4) near the lower end, and the valve body (1) is provided with an insert block (5) corresponding to the clamping port (4).
3. A flow-controllable backflow preventer according to claim 1, wherein the lower side of the mounting cavity (2) is fixed with a drain pipe (16), the drain pipe (16) being inserted into the drain pipe.
4. The flow-controllable backflow preventer according to claim 1, wherein the stay bars (9) are uniformly arranged along the inner side of the valve body (1), and a part of stay bars (9) slide in the guide groove (8).
5. The flow-controllable backflow preventer according to claim 1, wherein the cross sections of the inner side and the outer side of the sleeve (17) are hexagonal, and the upper side of the installation cavity (2) is provided with a hexagonal clamping groove corresponding to the sleeve (17).
6. The flow-controllable backflow preventer according to claim 1, wherein the lower right end of the positioning frame (12) is rotatably connected with a clamping block (15), a torsion spring is arranged at the rotation position, and the upper right side of the clamping block (15) is clamped on the positioning frame (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321294889.XU CN219911875U (en) | 2023-05-26 | 2023-05-26 | Flow-controllable backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321294889.XU CN219911875U (en) | 2023-05-26 | 2023-05-26 | Flow-controllable backflow preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219911875U true CN219911875U (en) | 2023-10-27 |
Family
ID=88427259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321294889.XU Active CN219911875U (en) | 2023-05-26 | 2023-05-26 | Flow-controllable backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219911875U (en) |
-
2023
- 2023-05-26 CN CN202321294889.XU patent/CN219911875U/en active Active
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| GR01 | Patent grant |