CN209705346U - The anti-negative pressure leakage check valve of resilient sleeve cast - Google Patents

Abstract

A kind of anti-negative pressure leakage check valve of resilient sleeve cast, including water inlet pipe, outlet pipe, wherein, it is nonopen blind pipe that it is top that water inlet pipe, which is enclosed in one end in outlet pipe, there is aperture on the side wall of blind pipe, spring-backed quill made of resilient material is covered on the outer wall of blind pipe to entangle the aperture on water inlet pipe and seal aperture in the contraction of specified thickness material limitation, it is allowed to be isolated with outlet pipe, when one end pressure of water inlet pipe is greater than the pressure of outlet pipe one end, spring-backed quill, which can deform opening, is connected to water inlet pipe with outlet pipe, water body can be flowed into outlet pipe from water inlet pipe by aperture, play the role of one-way conduction.

Description

The anti-negative pressure leakage check valve of resilient sleeve cast

Technical field

A kind of check valve that can prevent from leaking when the anti-negative pressure for generating flowing when water outlet generates negative pressure.

Background technique

It is exactly to carry out the pipeline between hot and cold water with a check valve in mode the simplest a kind of in hot water circuit Connection, enables the cold water in hot water pipeline to flow back among cold water pipes.But this connection has a problem in that, works as people When using cold water merely, since the water body flow in cold water pipes is to making to produce in cold water pipes relative to hot-water line The negative pressure in road, according to the principle that has that Water seeks its own level, the water in hot water pipeline will be flowed into cold water pipes, to make cold water Cold water heating in pipeline.When people do not need hot water, especially want to enjoy in the hot summer refrigerant It just cannot achieve when cold water, this is both a kind of missing functionally, even more a kind of waste of the energy, because hot water often needs The consumption energy could obtain, and institute to avoid this meaningless energy waste there is highly important economic value and society to imitate Benefit.

Summary of the invention

A kind of anti-negative pressure leakage check valve of resilient sleeve cast, including water inlet pipe 3, both ends open and by one section of water inlet pipe 3 The outlet pipe 9 of encirclement, wherein one end that water inlet pipe 3 is enclosed in outlet pipe 9 is that top is nonopen blind pipe, in blind pipe Side wall on have aperture 5, spring-backed quill 7 made of resilient material is covered on the outer wall of blind pipe by 5 sets of aperture on water inlet pipe 3 It firmly and in the contraction of specified thickness material limitation by aperture 5 seals, is allowed to be isolated with outlet pipe 9；According to principles well-known, pressure It is known as pressure with the relationship of active area, pressure is directly proportional to active force, is inversely proportional with forced area, equal in directed force F In the case of, forced area is smaller, and pressure is bigger；If the pressure in water inlet pipe 3 is P, pressure F, the area of aperture 5 is S；Out Pressure in water pipe 9 is P ', and pressure is F ', and the outer rim area of spring-backed quill 7 is S '；When 3 one end pressure P of water inlet pipe is greater than water outlet When the pressure P ' of 9 one end of pipe, the forced area of spring-backed quill 7 is equal to the area S of corresponding aperture 5, when pressure P- P ' is greater than bullet Property casing 7 contraction limitation when will deform opening and be connected to water inlet pipe 3 with outlet pipe 9, water body can lead to from water inlet pipe 3 It crosses aperture 5 to be flowed into outlet pipe 9, then flows in specified container, as shown in Fig. 1, the dotted line in figure designates water flow Path；Negative pressure can be generated by being known when having water body flow in the pipeline that outlet pipe 9 is connected according to principles well-known, in outlet pipe 9 When being negative pressure-F ', the forced area of spring-backed quill 7 is then the outer rim area S ' of entire casing, this area by it just than being entangled Aperture 5 area S it is big, i.e. S ' > S, therefore the absolute value of pressure-P ' will be small caused by negative pressure under the active force of same sample value In P, i.e. P>∣-P ' ∣, as long as the size of P-P ' is not above the deformation critical value of the spring-backed quill 7 of specified thickness, negative pressure is just The opening and water body flow of spring-backed quill 7 are not will cause；After the pressure difference ends of 3 one end of water inlet pipe and 9 one end of outlet pipe, In 7 natural shrinking of spring-backed quill makes the outer wall of inner wall abutting blind pipe under the action of elastic force；If the pressure of 9 one end of outlet pipe be greater than into When 3 one end of water pipe, due to the encirclement of spring-backed quill 7, water body can not enter in water inlet pipe 3 from aperture 5, play and unidirectionally lead Logical effect；

Further, increase support ring 13, thermometer bulb 15, valve block 17 and the reset spring 19 for having via hole in water inlet pipe 3, it is such as attached Shown in Fig. 4, the bottom of thermometer bulb 15 is fixed on the center of the concentric circles of support ring 13, and the mandril of thermometer bulb 15 is inserted into valve block 17 1 The other end of the recess at end, valve block 17 is supported on the end face of water inlet pipe 3 by reset spring 19, the end of valve block 17 and water inlet pipe 3 Face forms a temperature control valve system, and due to the supporting role of reset spring 19 when original state, temperature control valve system is in open shape State, when there is hot water stream to cross thermometer bulb 15, its mandril can gradually stretch out and pushing tow valve block 17 compresses reset spring, when what is flowed through When water temperature reaches a certain designated value, valve system is just completely closed, and water flow stops, and as shown in Fig. 5, reaches temperature control list with this To flowing.

Detailed description of the invention

Attached drawing 1 is that water flow unidirectionally passes through schematic diagram

Attached drawing 2 is schematic diagram when water flow stops

Attached drawing 3 is schematic diagram when generating negative pressure

Schematic diagram when attached drawing 4 is heating control

Attached drawing 5 is the schematic diagram after temperature control is closed

Specific embodiment

A kind of anti-negative pressure leakage check valve of resilient sleeve cast, including water inlet pipe 3, both ends open and by one section of water inlet pipe 3 The outlet pipe 9 of encirclement, wherein one end that water inlet pipe 3 is enclosed in outlet pipe 9 is that top is nonopen blind pipe, in blind pipe Side wall on have aperture 5, spring-backed quill 7 made of resilient material is covered on the outer wall of blind pipe by 5 sets of aperture on water inlet pipe 3 It firmly and in the contraction of specified thickness material limitation by aperture 5 seals, is allowed to be isolated with outlet pipe 9；According to principles well-known, pressure It is known as pressure with the relationship of active area, pressure is directly proportional to active force, is inversely proportional with forced area, equal in directed force F In the case of, forced area is smaller, and pressure is bigger；If the pressure in water inlet pipe 3 is P, pressure F, the area of aperture 5 is S；Out Pressure in water pipe 9 is P ', and pressure is F ', and the outer rim area of spring-backed quill 7 is S '；When 3 one end pressure P of water inlet pipe is greater than water outlet When the pressure P ' of 9 one end of pipe, the forced area of spring-backed quill 7 is equal to the area S of corresponding aperture 5, when pressure P- P ' is greater than bullet Property casing 7 contraction limitation when will deform opening and be connected to water inlet pipe 3 with outlet pipe 9, water body can lead to from water inlet pipe 3 It crosses aperture 5 to be flowed into outlet pipe 9, then flows in specified container, as shown in Fig. 1, the dotted line in figure designates water flow Path；Negative pressure can be generated by being known when having water body flow in the pipeline that outlet pipe 9 is connected according to principles well-known, in outlet pipe 9 When being negative pressure-F ', the forced area of spring-backed quill 7 is then the outer rim area S ' of entire casing, this area by it just than being entangled Aperture 5 area S it is big, i.e. S ' > S, therefore the absolute value of pressure-P ' will be small caused by negative pressure under the active force of same sample value In P, i.e. P>∣-P ' ∣, as long as the size of P-P ' is not above the deformation critical value of the spring-backed quill 7 of specified thickness, negative pressure is just The opening and water body flow of spring-backed quill 7 are not will cause；After the pressure difference ends of 3 one end of water inlet pipe and 9 one end of outlet pipe, In 7 natural shrinking of spring-backed quill makes the outer wall of inner wall abutting blind pipe under the action of elastic force；If the pressure of 9 one end of outlet pipe be greater than into When 3 one end of water pipe, due to the encirclement of spring-backed quill 7, water body can not enter in water inlet pipe 3 from aperture 5, play and unidirectionally lead Logical effect；

Further, increase support ring 13, thermometer bulb 15, valve block 17 and the reset spring 19 for having via hole in water inlet pipe 3, it is such as attached Shown in Fig. 4, the bottom of thermometer bulb 15 is fixed on the center of the concentric circles of support ring 13, and the mandril of thermometer bulb 15 is inserted into valve block 17 1 The other end of the recess at end, valve block 17 is supported on the end face of water inlet pipe 3 by reset spring 19, the end of valve block 17 and water inlet pipe 3 Face forms a temperature control valve system, and due to the supporting role of reset spring 19 when original state, temperature control valve system is in open shape State, when there is hot water stream to cross thermometer bulb 15, its mandril can gradually stretch out and pushing tow valve block 17 compresses reset spring, when what is flowed through When water temperature reaches a certain designated value, valve system is just completely closed, and water flow stops, and as shown in Fig. 5, reaches temperature control list with this To flowing.

Therefore, those skilled in the art should understand that, the present invention by appended claims is not being departed from Spirit and scope in, can to the present invention carry out various modifications.

Claims (2)

1. a kind of anti-negative pressure leakage check valve of resilient sleeve cast, including water inlet pipe (3), both ends open and by the one of water inlet pipe (3) The outlet pipe (9) that section is surrounded, wherein the top of one end that water inlet pipe (3) is enclosed in outlet pipe (9) is nonopen blind Pipe, there is aperture (5) on the side wall of blind pipe, and spring-backed quill (7) made of resilient material will be covered on the outer wall of blind pipe to intake Aperture (5) on pipe (3) side wall entangles and seals aperture (5) in the Material shrinkage limit of specified thickness, is allowed to and is discharged Manage (9) isolation；When the pressure of water inlet pipe (3) one end is greater than outlet pipe (9) one end and reaches specified intensity, pressure can force bullet Property casing (7) is flared out, and aperture (5) is just connected to outlet pipe (9), and water body can pass through aperture from water inlet pipe (3) (5) it is flowed into outlet pipe (9).

2. the anti-negative pressure leakage check valve of a kind of resilient sleeve cast according to claim 1, it is characterised in that: in water inlet pipe (3) there are the support ring (13) with via hole, thermometer bulb (15), valve block (17) and reset spring (19) in, the bottom of thermometer bulb (15) is fixed In the center of the concentric circles of support ring (13), the recess of mandril insertion valve block (17) one end of thermometer bulb (15), valve block (17) The other end be supported on the end face of water inlet pipe (3) by reset spring (19), the end face of valve block (17) and water inlet pipe (3) forms one A temperature control valve system, when there is hot water stream to cross thermometer bulb (15), its mandril can gradually stretch out and pushing tow valve block (17) and compress reset bullet Spring quilt, when the water temperature flowed through reaches a certain designated value, valve system is just completely closed, and water flow stops, after water temperature reduction certainly It is dynamic to reset.