CN116181934B - Low-resistance backflow preventer - Google Patents
Low-resistance backflow preventer Download PDFInfo
- Publication number
- CN116181934B CN116181934B CN202310056030.3A CN202310056030A CN116181934B CN 116181934 B CN116181934 B CN 116181934B CN 202310056030 A CN202310056030 A CN 202310056030A CN 116181934 B CN116181934 B CN 116181934B
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- Prior art keywords
- check valve
- water outlet
- water
- outlet check
- side wall
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 152
- 238000004891 communication Methods 0.000 claims abstract description 35
- 239000012535 impurity Substances 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 239000010865 sewage Substances 0.000 claims abstract 5
- 238000009434 installation Methods 0.000 claims description 30
- 238000004140 cleaning Methods 0.000 claims description 15
- 239000010813 municipal solid waste Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/065—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring spring pulling the closure member against the seat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/184—Combined check valves and actuated valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a low-resistance backflow preventer, which comprises a main valve body, wherein a water inlet and a water outlet are respectively arranged at two ends of the main valve body, a water drain valve is arranged in the middle of the main valve body, a water drain pipeline is arranged at one side of the top of the water drain valve, a water drain port is arranged at the bottom of the water drain valve, and the low-resistance backflow preventer further comprises a sewage disposal mechanism, a water outlet check valve, three movable assemblies, a first mounting piece, a second mounting piece and a water inlet check valve. According to the invention, through the arrangement of the three hollow pipes, the three hollow connecting rods, the inner ring, the outer ring, the three communication holes and the three blowdown springs, impurities adhered to the side wall of the valve, which is easy to leak, of the water outlet check valve are cleaned in a targeted manner, the adhered impurities on the side wall of the water outlet check valve are prevented from being scraped to the surface of the water outlet check valve by the clamping groove in the main valve body to be accumulated when the water outlet check valve is closed, the sealing performance of the water outlet check valve for long-time use is ensured, the manual maintenance frequency is reduced, the manpower resource is saved, and the working efficiency is indirectly improved.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a low-resistance backflow preventer.
Background
The low-resistance backflow preventer is mainly used between urban water supply networks and various user pipe networks, or used for effective partition during cross connection among heterogeneous water systems such as drinking water, fire water, air conditioner water, greening water and the like, or used for supporting installation of non-negative pressure equipment. The low resistance backflow preventer consists of two independent water inlet and outlet check valves and a fluid safety controlled water drain valve, and is one water control combination device capable of limiting pressurized water in pipeline to flow only in one direction. The device can prevent the medium in the pipeline from flowing backwards under any working condition, thereby achieving the purpose of avoiding backflow pollution. When the low-resistance backflow preventer is found to have accidents such as periodicity or continuous leakage under the condition of no leakage, the low-resistance backflow preventer needs to be checked and maintained.
The invention patent number CN114251486A discloses a low resistance backflow preventer. The low resistance backflow preventer includes a main valve body, a water inlet check valve and a water outlet check valve. The main valve body is detachably connected with a valve cover. The water inlet check valve, the water outlet check valve and the water drain valve are arranged inside the main valve body. The water drain valve comprises a valve rod, wherein the valve rod penetrates through the middle cavity, one end of the valve rod stretches into the control chamber, and the other end of the valve rod stretches to the water drain port. The diaphragm at one end of the valve rod divides the control chamber into a water inlet control chamber and a water outlet control chamber, and the other end of the valve rod is connected with a spring and sleeved with a valve plate. When the pressure of the water inlet cavity is larger than that of the water outlet cavity, the water drain valve is in a closed state; when the pressure of the water inlet cavity is smaller than or equal to the pressure of the water outlet cavity, the water drain valve is in an open state. The low-resistance backflow preventer adopts the built-in control pipeline, and can reduce the assembly and disassembly frequency of components, thereby improving the working efficiency during installation, maintenance or overhaul.
In the prior art, a built-in control pipeline is adopted, so that the assembly and disassembly frequency of components can be reduced, but due to the existence of microorganisms, impurities, organic matters and trace elements which are rich in water flow, the surface of the water outlet check valve is flushed for a long time by the water flow, a layer of film containing the impurities and the organic matters can be formed on the surface of the water outlet check valve, when the water outlet check valve is closed, the side wall of the water outlet check valve is in butt joint with the inner clamping groove of the main valve body, the adhered impurity film on the side wall of the water outlet check valve is scraped by the clamping groove in the main valve body, and is accumulated on the surface of the water outlet check valve, so that impurity accumulation is formed on the surface of the water outlet check valve, the sealing performance of the water outlet check valve is poor, and the leakage problem is caused.
Disclosure of Invention
The technical scheme of the invention aims at solving the technical problem that the prior art is too single, provides a solution which is obviously different from the prior art, and particularly aims to provide a low-resistance backflow preventer for solving the problems that the sealing performance is poor and leakage is caused because impurities on the side wall of a water outlet check valve are scraped to the surface of the water outlet check valve to be accumulated in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a low resistance backflow preventer, includes the main valve body, the both ends of main valve body are provided with water inlet and delivery port respectively, the middle part of main valve body is provided with the water drain valve, water drain valve top one side is provided with the sewer pipe, the bottom of water drain valve is provided with the water drain mouth, still includes decontaminating mechanism, play water check valve, three movable component, first installed part, second installed part and water inlet check valve, first installed part sets up in delivery port department, be provided with first installed part on the first installed part, play water check valve slip cap is established on first installed part, decontaminating mechanism is used for clearing up the accumulational dirt of water outlet check valve lateral wall, the second installed part sets up in water inlet department, be provided with second installed part on the second installed part, water inlet check valve slip cap is established on second installed part, the movable component is used for cooperating decontaminating subassembly to retrieve impurity.
Preferably, the first installation component includes first installation pole and first reset spring, first installation pole is fixed to be set up on first installed part, first reset spring cover is established on first installation pole to first reset spring's both ends respectively with go out water check valve and first installed part fixed connection, the second installation component includes second installation pole and second reset spring, the fixed setting of second installation pole is on the second installed part, second reset spring cover is established on the second installation pole to second reset spring's both ends respectively with go out water check valve and second installed part fixed connection.
Preferably, the dirt cleaning mechanism comprises three hollow tubes, three hollow connecting rods, an inner ring, an outer ring, three communication holes and three dirt discharging springs, wherein one ends of the three hollow tubes are fixedly arranged on the inner side wall of the main valve body, the three dirt discharging springs are respectively sleeved on the three hollow tubes, the three hollow connecting rods are respectively sleeved on the three hollow tubes in a sliding mode, the outer ring is fixedly arranged at one ends of the three hollow connecting rods, the inner ring is fixedly arranged on the inner side wall of the outer ring, the three communication holes are arranged on the inner side wall of the outer ring, and the three communication holes are correspondingly communicated with the three hollow connecting rods.
Preferably, a cavity is formed between the water inlet check valve and the water outlet check valve.
Preferably, the inner side wall of the inner ring is provided with an inclined surface.
Preferably, the water outlet check valve is provided with a first storage groove matched with the inner ring and the outer ring, and one side wall of the water outlet check valve, which is close to the hollow connecting rod, is provided with three second storage grooves for placing the hollow connecting rod.
Preferably, each movable assembly comprises a communication groove, an arc movable plate and a movable hole, wherein the communication groove is formed in the hollow connecting rod, the arc movable plate is arranged inside the hollow pipe, the arc movable plate is fixedly connected with the end part of the hollow connecting rod, and the movable hole is formed in the arc movable plate.
Preferably, the movable hole is communicated with the communication groove and the communication hole.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the arrangement of the three hollow pipes, the three hollow connecting rods, the inner ring, the outer ring, the three communication holes and the three blowdown springs, when the first reset spring is reset to drive the water outlet check valve to reset, the side wall of the water outlet check valve contacts the inner side wall of the inner ring, so that impurities adhered to the side wall of the water outlet check valve are scraped between the inner ring and the outer ring by the inner ring, the water flow of the side wall of the water inlet check valve flows into the movable assembly to wash off the impurities scraped between the inner ring and the outer ring, the washed-off impurities flow to the innermost part of the movable assembly along the first channel of the movable assembly to be collected in a concentrated manner, and the impurities adhered to the side wall of the valve, which is easy to leak, of the water outlet check valve are prevented from being scraped to the surface of the water outlet check valve by the clamping groove in the main valve body to be accumulated, the sealing performance of the water outlet check valve for a long time is ensured, meanwhile, the manual maintenance frequency is reduced, and the work efficiency is improved indirectly;
according to the invention, the inner side wall of the inner ring is provided with the inclined surface, and the annular triangular groove is formed by the cooperation of the inner ring and the outer ring, so that the circulation channels of water flow and impurities are limited, the water flow and impurities can be better ensured to stably enter the communication hole, the subsequent centralized collection and treatment are convenient, and the impurities on the side wall of the water outlet check valve can be more effectively scraped by the arrangement of the inclined surface of the inner ring, so that a better dirt cleaning effect is achieved;
in the process that the water outlet check valve is to be closed, under the condition of constant pressure, the water flow channel is gradually reduced, so that the water flow speed is increased, the impulse of water flow is enhanced, the impurities scraped off the side wall of the inner ring are effectively flushed into the communication hole, and the effect of cleaning and collecting the impurities can be improved without an additional power source;
according to the invention, the hollow connecting rod and the arc-shaped movable plate are driven to synchronously move while the water outlet check valve moves, so that the communication groove, the communication hole and the movement are always kept in a communication state, and the phenomenon of impurity backflow caused by leakage of the side wall of the hollow pipe is prevented.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the internal structure of the present invention;
FIG. 3 is a schematic view of the positional relationship of a first mounting assembly and a second mounting assembly of the present invention;
fig. 4 is a schematic structural view of the dirt cleaning mechanism of the present invention;
fig. 5 is a schematic structural view of the movable assembly of the present invention.
In the figure: 1. a main valve body; 2. a water inlet; 21. a second mounting bar; 22. a second return spring; 3. a water outlet; 31. a first mounting bar; 32. a first return spring; 4. a water drain valve; 5. a drain line; 6. a water discharge port; 7. a cleaning mechanism; 71. a hollow tube; 72. a hollow connecting rod; 73. an inner ring; 74. an outer ring; 75. a communication hole; 76. a blow-down spring; 8. a water outlet check valve; 81. a first storage groove; 82. a second storage groove; 9. a movable assembly; 91. a communication groove; 92. an arc-shaped movable plate; 93. a movable hole; 10. a first mounting member; 11. a water inlet check valve; 12. a cavity; 13. and a second mounting member.
Description of the embodiments
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, an embodiment of the present invention is provided: the utility model provides a low resistance backflow preventer, includes main valve body 1, the both ends of main valve body 1 are provided with water inlet 2 and delivery port 3 respectively, the middle part of main valve body 1 is provided with wash-out valve 4, wash-out valve 4 top one side is provided with wash-out pipe 5, the bottom of wash-out valve 4 is provided with wash-out mouth 6, still includes trash removal mechanism 7, play water check valve 8, three movable assembly 9, first installed part 10, second installed part 13 and intake check valve 11, first installed part 10 sets up in delivery port 3 departments, be provided with first installation component on the first installed part 10, go out water check valve 8 slip cap is established on first installation component, trash removal mechanism 7 is used for clearing up the dirt that goes out water check valve 8 lateral wall and piles up, second installed part 13 sets up in water inlet 2 departments, be provided with second installation component on second installed part 13, intake check valve 11 slip cap is established on second installation component, movable assembly 9 is used for cooperating trash removal component. Firstly, after the pressure of the water outlet 3 of the main valve body 1 is higher than that of the water inlet 2, the water inlet check valve 11 and the water outlet check valve 8 are closed, the water outlet check valve 8 and the cleaning assembly are correspondingly clamped, residual impurities on the side wall of the water outlet check valve 8 are scraped to the cleaning mechanism 7 through the clamping of the cleaning assembly, and in the process that the water outlet check valve 8 is to be closed, the water flow channel is gradually reduced, the water flow speed is accelerated, the water flow on the side wall of the water inlet check valve 11 flows into the movable assembly 9, impurities in the cleaning mechanism 7 are flushed down, and the flushed impurities are collected intensively along the first direct current of the inner channel of the movable assembly 9, so that water quality pollution is prevented from being caused by flushing out the impurities again, and the impurities adhered to the side wall of the valve, which is easy to leak, of the water outlet check valve 8 can be cleaned up pertinently, the adhered impurities on the side wall of the valve body are prevented from being scraped to the surface of the water outlet check valve by the clamping groove in the inner part 1 to be stacked, so that the sealing performance of the water outlet check valve 8 is accelerated, the leakage is caused, the problem of the leakage is solved, the water outlet check valve can be automatically cleaned up, the manual frequency is greatly, the manpower frequency is reduced, the main valve body can be maintained, the working efficiency is greatly can be maintained, and the efficiency is greatly improved, and the labor frequency is saved, and the main valve body can be maintained, and the efficiency can be maintained.
Specifically, the first installation component includes first installation pole 31 and first reset spring 32, first installation pole 31 is fixed to be set up on first installed part 10, first reset spring 32 cover is established on first installation pole 31 to the both ends of first reset spring 32 respectively with go out water check valve 8 and first installed part 10 fixed connection, the second installation component includes second installation pole 21 and second reset spring 22, second installation pole 21 is fixed to be set up on second installed part 13, second reset spring 22 cover is established on second installation pole 21 to the both ends of second reset spring 22 respectively with go out water check valve 8 and second installed part 13 fixed connection. When the pressure of the water inlet 2 is smaller than that of the water outlet 3, the water inlet check valve 11 and the water outlet check valve 8 are reset by the reset acting forces of the second reset spring 22 and the first reset spring 32 respectively, so that the inside of the main valve body 1 is blocked, and the water flow is prevented from flowing backwards.
Specifically, the dirt cleaning mechanism 7 includes three hollow tubes 71, three hollow connecting rods 72, an inner ring 73, an outer ring 74, three communication holes 75 and three dirt discharging springs 76, wherein three ends of the hollow tubes 71 are fixedly arranged on the inner side wall of the main valve body 1, three dirt discharging springs 76 are respectively sleeved on the three hollow tubes 71, three hollow connecting rods 72 are respectively slidably sleeved on the three hollow tubes 71, the outer ring 74 is fixedly arranged at one ends of the three hollow connecting rods 72, the inner ring 73 is fixedly arranged on the inner side wall of the outer ring 74, three communication holes 75 are arranged on the inner side wall of the outer ring 74, and the three communication holes 75 are correspondingly communicated with the three hollow connecting rods 72. When the water outlet check valve 8 is driven to reset by the reset action of the first reset spring 32, the side wall of the water outlet check valve 8 contacts the inner side wall of the inner ring 73, so that the inner ring 73 scrapes impurities adhered to the side wall of the water outlet check valve 8 between the inner ring 73 and the outer ring 74, and the impurities are flushed into the hollow tube 71 from the communication hole 75 due to the impact force of water flow.
Specifically, a cavity 12 is formed between the water inlet check valve 11 and the water outlet check valve 8.
Specifically, the inner side wall of the inner ring 73 is provided with a slope.
Specifically, the water outlet check valve 8 is provided with a first storage groove 81 matched with the outer ring 74 of the inner ring 73, and a side wall of the water outlet check valve 8, which is close to the hollow connecting rod 72, is provided with three second storage grooves 82 for placing the hollow connecting rod 72.
Specifically, each movable assembly 9 includes a communication slot 91, an arc movable plate 92 and a movable hole 93, the communication slot 91 is disposed in the hollow connecting rod 72, the arc movable plate 92 is disposed inside the hollow tube 71, and the arc movable plate 92 is fixedly connected with the end of the hollow connecting rod 72, and the movable hole 93 is disposed on the arc movable plate 92. By driving the hollow connecting rod 72 and the arc movable plate 92 to move synchronously while the water outlet check valve 8 moves, the communication groove 91 and the communication hole 75 and the movement are kept in the communication state all the time, and the phenomenon of the back flow of impurities caused by leakage of the side wall of the hollow tube 71 is prevented.
Specifically, the movable hole 93 communicates with the communication groove 91 and the communication hole 75.
Working principle: firstly, after the pressure of the water outlet 3 of the main valve body 1 is higher than that of the water inlet 2, the water inlet check valve 11 and the water outlet check valve 8 are closed, when the water outlet check valve 8 is driven to reset through the reset action of the first reset spring 32, the side wall of the water outlet check valve 8 contacts the inner wall of the inner ring 73, so that impurities adhered to the side wall of the water outlet check valve 8 are scraped between the inner ring 73 and the outer ring 74 by the inner ring 73, in the process that the water outlet check valve 8 is to be closed, the water flow speed is accelerated due to the fact that the water flow channel is gradually reduced and the pressure is reduced, the water flow on the side wall of the water inlet check valve 11 flows into the communication groove 91 through the communication hole 75, flows into the movable hole 93 from the communication groove 91, and finally the impurities are washed into the hollow tube 71 for concentrated collection.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (6)
1. The utility model provides a low resistance backflow preventer, includes main valve body (1), the both ends of main valve body (1) are provided with water inlet (2) and delivery port (3) respectively, the middle part of main valve body (1) is provided with outlet valve (4), outlet valve (4) top one side is provided with outlet pipe (5), outlet valve (4) bottom is provided with outlet (6), its characterized in that: the novel sewage treatment device is characterized by further comprising a sewage cleaning mechanism (7), a water outlet check valve (8), three movable components (9), a first mounting piece (10), a second mounting piece (13) and a water inlet check valve (11), wherein the first mounting piece (10) is arranged at the water outlet (3), the first mounting piece (10) is provided with a first mounting component, the water outlet check valve (8) is slidably sleeved on the first mounting component, the sewage cleaning mechanism (7) is used for cleaning dirt accumulated on the side wall of the water outlet check valve (8), the second mounting piece (13) is arranged at the water inlet (2), the second mounting component is arranged on the second mounting piece (13), the water inlet check valve (11) is slidably sleeved on the second mounting component, and the movable components (9) are used for recycling impurities in cooperation with the sewage cleaning component;
the trash cleaning mechanism (7) comprises three hollow pipes (71), three hollow connecting rods (72), an inner ring (73), an outer ring (74), three communication holes (75) and three trash springs (76), wherein one end of each hollow pipe (71) is fixedly arranged on the inner side wall of a main valve body (1), the three trash springs (76) are respectively sleeved on the three hollow pipes (71), the three hollow connecting rods (72) are respectively sleeved on the three hollow pipes (71) in a sliding mode, the outer ring (74) is fixedly arranged at one end of each hollow connecting rod (72), the inner ring (73) is fixedly arranged on the inner side wall of the outer ring (74), the three communication holes (75) are arranged on the inner side wall of the outer ring (74), and the three communication holes (75) are correspondingly communicated with the three hollow connecting rods (72);
every movable assembly (9) all includes intercommunication groove (91), arc fly leaf (92) and movable hole (93), intercommunication groove (91) set up in hollow connecting rod (72), arc fly leaf (92) set up inside hollow tube (71), and arc fly leaf (92) and hollow connecting rod (72) tip fixed connection, movable hole (93) set up on arc fly leaf (92).
2. A low-resistance backflow preventer according to claim 1, wherein: the first installation component includes first installation pole (31) and first reset spring (32), first installation pole (31) is fixed to be set up on first installed part (10), first reset spring (32) cover is established on first installation pole (31) to the both ends of first reset spring (32) respectively with go out water check valve (8) and first installed part (10) fixed connection, the second installation component includes second installation pole (21) and second reset spring (22), second installation pole (21) are fixed to be set up on second installed part (13), second reset spring (22) cover is established on second installation pole (21) to the both ends of second reset spring (22) are respectively with go out water check valve (8) and second installed part (13) fixed connection.
3. A low-resistance backflow preventer according to claim 2, wherein: a cavity (12) is formed between the water inlet check valve (11) and the water outlet check valve (8).
4. A low-resistance backflow preventer according to claim 1, wherein: the inner side wall of the inner ring (73) is provided with an inclined plane.
5. A low-resistance backflow preventer according to claim 3 wherein: the water outlet check valve (8) is provided with a first storage groove (81) matched with an outer ring (74) of the inner ring (73), and one side wall, close to the hollow connecting rod (72), of the water outlet check valve (8) is provided with three second storage grooves (82) for placing the hollow connecting rod (72).
6. A low-resistance backflow preventer according to claim 1, wherein: the movable hole (93) communicates with the communication groove (91) and the communication hole (75).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310056030.3A CN116181934B (en) | 2023-01-14 | 2023-01-14 | Low-resistance backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310056030.3A CN116181934B (en) | 2023-01-14 | 2023-01-14 | Low-resistance backflow preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116181934A CN116181934A (en) | 2023-05-30 |
| CN116181934B true CN116181934B (en) | 2023-08-15 |
Family
ID=86435923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310056030.3A Active CN116181934B (en) | 2023-01-14 | 2023-01-14 | Low-resistance backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116181934B (en) |
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| CN209067880U (en) * | 2018-09-30 | 2019-07-05 | 巩义市旗航管道设备有限公司 | Anti- back pressure and exempting from tears cleaning check blowdown valve open |
| CN210566341U (en) * | 2019-09-29 | 2020-05-19 | 李作为 | Multi-stage wear-resistant angle valve for treating slag-containing medium |
| CN213245359U (en) * | 2020-09-28 | 2021-05-21 | 金星阀门有限公司 | Combined valve with lengthened neck for pipeline |
| CN216344002U (en) * | 2021-09-28 | 2022-04-19 | 丕东设备科技(上海)有限公司 | Valve with impurity removal function |
| CN217401734U (en) * | 2021-12-29 | 2022-09-09 | 上海亚奥阀门有限公司 | Fluid control valve |
| CN115163885A (en) * | 2022-06-01 | 2022-10-11 | 上海上龙供水设备有限公司 | Valve clack device for water inlet end of backflow preventer |
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2023
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| CN207333783U (en) * | 2017-04-28 | 2018-05-08 | 杭州凯维阀门集团有限公司 | A kind of ball valve |
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| CN216344002U (en) * | 2021-09-28 | 2022-04-19 | 丕东设备科技(上海)有限公司 | Valve with impurity removal function |
| CN217401734U (en) * | 2021-12-29 | 2022-09-09 | 上海亚奥阀门有限公司 | Fluid control valve |
| CN115163885A (en) * | 2022-06-01 | 2022-10-11 | 上海上龙供水设备有限公司 | Valve clack device for water inlet end of backflow preventer |
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| CN116181934A (en) | 2023-05-30 |
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