CN218670780U

CN218670780U - Double check valve for water mixer

Info

Publication number: CN218670780U
Application number: CN202223290478.1U
Authority: CN
Inventors: 伍天星
Original assignee: Foshan Xingli Environmental Protection Equipment Co ltd
Current assignee: Foshan Xingli Environmental Protection Equipment Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-03-21
Anticipated expiration: 2032-12-08

Abstract

The utility model belongs to the technical field of valves, in particular to a double check valve for a water mixer, which comprises a valve seat, wherein a water inlet and a water outlet are arranged at the two ends of the valve seat, and a cavity is arranged inside the valve seat and comprises a first backflow prevention module and a second backflow prevention module; the first backflow prevention module is arranged inside the cavity; the setting of second anti-backflow module is close to delivery port one side at first anti-backflow module, in the twinkling of an eye when water mixer stops supplying water, under the condition when check valve water inlet low pressure, the velocity of water flow can increase fast, can make rivers can take place to flow backwards, be equipped with first anti-backflow module and second anti-backflow module, break through the second when liquid behind the anti-backflow module, can also carry out rivers through first anti-backflow module and completely cut off this liquid between first anti-backflow module and second anti-backflow module, can prevent the inside of liquid backflow backmixing ware, avoid this liquid pollution water mixer inside water, guarantee water mixer normal use.

Description

Double check valve for water mixer

Technical Field

The utility model relates to the technical field of valves, in particular to a dual check valve for water mixer.

Background

The technical scheme is that the check valve body comprises a check valve body, a check valve cap and a check valve core, the check valve body is arranged above a check valve core, a check flow cavity chamber is formed between the check valve body and the check valve cap, the check valve core is arranged between the check valve body and the check valve core, one end of the check valve core penetrates through the check valve body, the other end of the check valve core penetrates through the check valve cap, a check valve retaining skin and a check valve core sheet used for fixing the check valve retaining skin are sleeved on the check valve core, a spring is further arranged between the check valve core sheet and the check valve body, and the spring is sleeved outside the check valve core.

Above-mentioned valve body is inside only to be provided with individual layer structure of preventing flowing backwards, install at pipeline or muddy hydrophone outlet end department when the valve body, in a moment that the check valve is closed, the check valve can promote partial liquid and go back away, only be provided with individual layer structure of preventing flowing backwards can't effectually block and produce liquid behind the closed check valve, under the lower condition of check valve entrance point pressure, the velocity of water flow can accelerate, thereby lead to this liquid to break through backflow structure backflow valve body inside rapidly from the delivery port, can make inside liquid backflow pipeline or muddy hydrophone, thereby can lead to pipeline or muddy inside water of hydrophone to receive the pollution, thereby influence muddy water mixer's normal use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects existing in the prior art, the utility model provides a dual check valve for water mixer.

The utility model provides a technical scheme that its technical problem adopted is: a double check valve for a water mixer is provided with a valve seat, wherein a water inlet and a water outlet are arranged at two ends of the valve seat, a cavity is formed in the valve seat, and the double check valve comprises a first backflow prevention module and a second backflow prevention module;

the first backflow prevention module is arranged inside the cavity, the first backflow prevention module comprises a sliding rail piece and a sealing part, the sliding rail piece is arranged at the water outlet end of the water inlet, the sealing part is movably connected inside the sliding rail piece, the bottom surface of the sealing part is provided with a spring piece, and the spring piece is a conventional compression spring in the market;

preferably, the seal comprises a glass bead or a conical cylinder.

The second prevents that the module setting of flowing backwards is in first prevent that the module setting of flowing backwards is close to delivery port one side, the second prevents that the module of flowing backwards separates basket and seal cover including filtering, it separates the basket setting in the bottom of spring part to filter, the seal cover has been cup jointed to the outside of filtering separating the basket.

Further description of the scheme is that a filter screen is arranged at the joint of the first backflow prevention module and the water inlet, and a sealing gasket is arranged at the joint of the filter screen and the first backflow prevention module.

Further description of the scheme is that a guide rail is arranged inside the sliding rail piece, the sealing portion is connected with the guide rail in a sliding mode, a groove is formed in one end, close to the filter screen, of the sliding rail piece, and a sealing gasket is arranged on the groove.

Preferably, the sealing portion is in contact with an outer surface of the guide rail.

Further described in this embodiment, the outer surface of the filter basket has a plurality of openings.

According to the scheme, a clamping groove is formed in the valve seat close to the water outlet, an elastic clamping ring is arranged in the clamping groove and is abutted against the sealing sleeve, and the sealing sleeve is fixedly fixed outside the filtering separation basket through the elastic clamping ring.

Preferably, the seal cover, the filter screen and the sealing gasket are made of silica gel.

Preferably, the filter screen is made of hard plastic materials.

The utility model has the advantages that:

1. when the water mixer stops supplying water in the twinkling of an eye, under the condition when the check valve water inlet low pressure, the velocity of water flow can increase soon, can make rivers can take place to flow backward, be provided with first anti-backflow module and second anti-backflow module, after liquid has broken through the second anti-backflow module, can also carry out rivers completely cut through first anti-backflow module and completely cut off this liquid between first anti-backflow module and second anti-backflow module through being provided with two-layer anti-backflow module, can prevent the inside of liquid reverse flow backmixing ware, this liquid pollution water mixer inside water has been avoided, the normal use of water mixer has been guaranteed.

2. The utility model discloses still be provided with the filter screen and filter and separate the basket, can carry out twice sediment that separates to muddy hydrophone exhaust water and filter, can avoid impurity such as tiny grit, rubble in the muddy hydrophone exhaust water flow to discharge the outside through the delivery port of check valve, promote user's water quality.

Drawings

Fig. 1 is an exploded view of a first embodiment of the present invention;

FIG. 2 is a first overall structural diagram of the present invention;

FIG. 3 is a schematic overall structural view II of the present invention;

fig. 4 is a structural sectional view of a first embodiment of the present invention;

fig. 5 is a first schematic structural view of the valve seat of the present invention;

FIG. 6 is a second schematic structural view of the valve seat of the present invention;

FIG. 7 is a schematic structural view of the slide rail member of the present invention;

FIG. 8 is a schematic structural view of the filtering basket of the present invention;

fig. 9 is a structural sectional view of a second embodiment of the present invention;

fig. 10 is an exploded view of a second embodiment of the present invention.

Shown in the figure: the water-saving filter comprises a valve seat 1, a water inlet 11, a water outlet 12, a clamping groove 13, a first backflow prevention module 2, a sliding rail piece 21, a guide rail 211, a groove 212, a sealing part 22, a spring piece 23, a second backflow prevention module 3, an opening 311, a filtering separation basket 31, a sealing sleeve 32, a filter screen 4, a sealing gasket 5 and an elastic clamping ring 6.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The first embodiment is as follows:

as shown in fig. 1, 2, 3, 4, 5 and 6, the utility model provides a dual check valve for a water mixer, which comprises a valve seat 1, a water inlet 11 and a water outlet 12 are arranged at two ends of the valve seat 1, a cavity is arranged in the valve seat 1, the dual check valve comprises a first backflow prevention module 2 and a second backflow prevention module 3, the first backflow prevention module 2 is arranged in the cavity, and the second backflow prevention module 3 is arranged at one side of the first backflow prevention module 2 close to the water outlet 12;

when the water mixer stops supplying water, the check valve can push part of liquid to return at the moment when the check valve is closed, the check valve can push part of water flow to return, and the liquid can be caused to flow back under the condition of low pressure at the water inlet 11 of the check valve;

follow-up when normal use, through opening the muddy hydrophone, the flow can enter into disk seat 1 through water inlet 11 in, the rethread first prevents flowing backwards module 2 and second prevents flowing backwards module 3 and enters into delivery port 12 department and discharges to can will completely cut off rivers and send delivery port 12 between first prevent flowing backwards module 2 and second prevent flowing backwards module 3, thereby can realize the discharge in the lump, avoid the gathering between first prevent flowing backwards module 2 and second prevent flowing backwards module 3.

Preferably, the valve seat 1 is externally provided with a screw thread to facilitate the installation of the check valve.

As shown in fig. 1, 2, 3 and 4, be provided with filter screen 4 in the junction of first anti-backflow module 2 and water inlet 11, the material of filter screen 4 is the hard plastic material, filters the rivers that pass through water inlet 11 to water mixer through being provided with filter screen 4, can avoid impurity such as tiny grit, rubble in the muddy water mixer exhaust rivers to flow into first anti-backflow module 2 and second anti-backflow module 3 in, can guarantee the normal use of two sets of modules.

As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the first backflow prevention device comprises a sliding rail member 21 and a sealing portion 22, the sliding rail member 21 is arranged at the water outlet end of the water inlet 11, the sealing portion 22 is movably connected inside the sliding rail member 21, a spring member 23 is arranged on the bottom surface of the sealing portion 22, a guide rail 211 is arranged inside the sliding rail member 21, the sealing portion 22 is slidably connected with the guide rail 211, the sealing portion 22 can reciprocate on the guide rail 211 through the deformation of the spring member 23, and the guide rail 211 is arranged to prevent the sealing portion 22 from deviating during movement;

preferably, the sealing portion 22 is in contact with the outer surface of the guide rail 211.

In one embodiment, the sealing portion 22 is a glass bead.

The sealing gasket 5 is arranged at the joint of the filter screen 4 and the first backflow prevention module 2, the groove 212 is formed in one end, close to the filter screen 4, of the sliding rail piece 21, the sealing gasket 5 is placed on the groove 212, and sealing performance of the filter screen 4 when the filter screen is connected with the first backflow prevention module 2 is guaranteed.

Preferably, the sealing gasket 5 is made of silicone.

Install at muddy hydrophone play water end when going out water, when rivers enter into the inside of disk seat 1 from water inlet 11, filter the tiny gravel in the rivers through filter screen 4 earlier, impurity such as rubble, reentrant first prevent flowing backwards in the module 2, receive the decurrent impact force of rivers, can let sealing 22 receive hydraulic decurrent impact force, thereby make spring part 23 receive hydraulic impact force and take place deformation, can drive sealing 22 downstream, it separates sealed pad 5 to enable sealing 22, solve first prevent flowing backwards the sealed operation of module 2, thereby make rivers can send into in the second prevents flowing in the module 2.

As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the second backflow prevention module 3 comprises a filtering separation basket 31 and a sealing sleeve 32, the filtering separation basket 31 is arranged at the bottom of a spring part 23, the sealing sleeve 32 is sleeved outside the filtering separation basket 31, a plurality of openings 311 are formed in the outer surface of the filtering separation basket 31, when water flows into the filtering separation basket 31, secondary filtering can be performed on fine gravel, broken stone and other impurities in the water flows, subsequent water flows can flow out of the filtering separation basket 31 through the openings 311, the sealing sleeve 32 is made of silica gel, so that the sealing sleeve 32 outside the filtering separation basket 31 can be impacted by water, expansion opening is achieved, the water flows can be discharged out of the second backflow prevention module 3 subsequently, the water flows into a water outlet 12, and the water flows out of a check valve.

When stopping supplying water, the sealing part 22 does not receive the downward impact force of the water pressure, thereby the spring piece 23 is reset, the sealing part 22 can be abutted against the sealing gasket 5, thereby the sealing operation of the first backflow prevention module 2 is realized, when the water flow gushes from the water outlet to the backflow prevention module 2, the spring piece 23 can receive the resilience force from the outside to the inside, thereby the sealing part 22 is further enabled to compress the sealing gasket 5, the water inlet 11 is further prevented from flowing backwards, and the backflow prevention operation of the first backflow prevention module 2 can be realized;

first anti-backflow module 2 realizes sealed, the second is prevented that backflow module 3 does not receive the impact of rivers, thereby make seal cover 32 not receive the impact force of water and do not take place deformation, can seal cover 23 continue to seal and live the opening 311 that filters at a distance from basket 31 surface, can prevent that the second from preventing backflow module 4 from appearing the seepage, thereby when rivers spout the second and prevent backflow module 4, can seal cover 32 outside atress, further press close to the surface that filters at a distance from basket 31, thereby prevent that outside rivers from flowing into the second through opening 311 and prevent backflow module 4, can realize the operation of the anti-backflow of second anti-backflow module 4.

As shown in fig. 1, 2, 3, 4, 5 and 6, a clamping groove 13 is arranged in the valve seat 1 and close to the water outlet 12, an elastic clamping ring 6 is arranged in the clamping groove 13, and the elastic clamping ring 6 abuts against the sealing sleeve 32, so that the sealing sleeve 32 is fixed outside the filtering separation basket 31 through the elastic clamping ring 6, and the second backflow prevention module 2 can be prevented from falling out of the valve body.

The second embodiment:

as shown in fig. 9 and 10, the second embodiment is different from the first embodiment in that: in the second embodiment, the sealing part 22 is a conical cylinder, and the interior of the conical cylinder is hollow;

as shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, the first backflow prevention device comprises a sliding rail member 21 and a sealing portion 22, the sliding rail member 21 is arranged at the water outlet end of the water inlet 11, the sealing portion 22 is movably connected inside the sliding rail member 21, a spring member 23 is arranged on the bottom surface inside the sealing portion 22, a guide rail 211 is arranged inside the sliding rail member 21, the sealing portion 22 is slidably connected with the guide rail 211, the sealing portion 22 can reciprocate on the guide rail 211 through deformation of the spring member 23, and the guide rail 211 is arranged to prevent the sealing portion 22 from deviating during movement.

The sealing portion 22 of the second embodiment is identical to the sealing portion 22 of the first embodiment in operation.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a dual check valve for muddy hydrophone, has disk seat (1), disk seat (1) both ends are provided with water inlet (11) and delivery port (12), the cavity has been seted up to disk seat (1) inside, its characterized in that includes:

the first backflow prevention module (2) is arranged inside the cavity, the first backflow prevention module comprises a sliding rail piece (21) and a sealing part (22), the sliding rail piece (21) is arranged at the water outlet end of the water inlet (11), the sealing part (22) is movably connected inside the sliding rail piece (21), and a spring piece (23) is arranged on the bottom surface of the sealing part (22);

the second prevents module (3) that flows backwards, second prevents that module (3) that flows backwards sets up in first prevent that module (2) that flows backwards is close to delivery port (12) one side, second prevents that flow backwards module (3) separates basket (31) and seal cover (32) including filtering, filter and separate basket (31) and set up the bottom at spring part (23), filter and separate the outside of basket (31) and cup jointed seal cover (32).

2. The dual check valve for a water mixer of claim 1, wherein: the joint of the first backflow prevention module (2) and the water inlet (11) is provided with a filter screen (4), and the joint of the filter screen (4) and the first backflow prevention module (2) is provided with a sealing gasket (5).

3. The dual check valve for a water mixer of claim 1, wherein: the filter screen is characterized in that a guide rail (211) is arranged inside the sliding rail piece (21), the sealing part (22) is connected with the guide rail (211) in a sliding mode, a groove (212) is formed in one end, close to the filter screen (4), of the sliding rail piece (21), and a sealing gasket (5) is arranged on the groove (212).

4. The dual check valve for a water mixer of claim 1, wherein: the outer surface of the filtering separating basket (31) is provided with a plurality of openings (311).

5. The dual check valve for a water mixer of claim 1, wherein: a clamping groove (13) is formed in the valve seat (1) and close to the water outlet (12), an elastic clamping ring (6) is arranged in the clamping groove (13), and the elastic clamping ring (6) is abutted to a sealing sleeve (32) so that the sealing sleeve (32) is fixedly fixed outside the filtering separation basket (31) through the elastic clamping ring (6).

6. A dual check valve for a mixer in accordance with claim 1 wherein: the sealing sleeve (32) and the sealing gasket (5) are made of silica gel.

7. A dual check valve for a mixer in accordance with claim 2 wherein: the filter screen (4) is made of hard plastic materials.