Closed water stop type water mixing valve

Abstract

The utility model discloses a closed water stop type water mixing valve which comprises a closed water stop type water mixing valve body, the rear end of the closed water stop type water mixing valve body is fixedly connected with two water inlet pipes, and the two water inlet pipes are fixedly connected with filter boxes communicated with the water inlet pipes. The side walls of the two filter boxes are fixedly connected with connecting pipes communicated with the filter boxes, each filter box is provided with a dismounting and mounting mechanism, the front end of the closed water stop type water mixing valve body is fixedly connected with a water outlet pipe communicated with the closed water stop type water mixing valve body, and a backflow prevention mechanism is arranged in the water outlet pipe. Particle impurities in water flow can be intercepted by arranging the filter screen, and blockage of the filter screen can be avoided by disassembling the filter screen; and the backflow of the circulated water can be avoided through the backflow prevention mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a closing water-stop type mixing valve. Background Technique

[0002] A mixing valve is needed when mixing cold water and hot water.

[0003] When the existing cold water and hot water are flowing, there are still particulate impurities in the cold water and hot water at this time. After the water flows for a long time, the particulate impurities will block the valve or the water-using equipment connected to the valve, resulting in the problem of blockage of the management; to solve the above problems, a closing water-stop type mixing valve is proposed in this application. Content of the Utility Model

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a closing water-stop type mixing valve, which can intercept particulate impurities in the water flow by setting a filter screen, and can avoid its blockage by disassembling the filter screen; the backflow of the water after circulation can be avoided through the backflow prevention mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A closing water-stop type mixing valve, including a closing water-stop type mixing valve body, two water inlet pipes are fixedly connected to the rear end of the closing water-stop type mixing valve body, and two filter boxes communicated with the water inlet pipes are fixedly connected to the two water inlet pipes respectively. Connecting pipes communicated with the filter boxes are fixedly connected to the side walls of the two filter boxes respectively. A disassembly and assembly mechanism is arranged on each filter box. The disassembly and assembly mechanism includes an opening penetrating through the filter box, a sealing block is arranged on the opening in a sealing manner, and a filter screen is fixedly connected to the bottom of the sealing block. Two insertion pins slidably connected to the filter box are arranged through the filter box. A first spring is sleeved on the outer wall of each insertion pin. Two ends of each first spring are respectively fixedly connected to the filter box and the insertion pin. Two insertion holes are formed in the sealing block, and the two insertion pins are respectively inserted into the insertion holes. An outlet pipe communicated with the closing water-stop type mixing valve body is fixedly connected to the front end of the closing water-stop type mixing valve body, and a backflow prevention mechanism is arranged in the outlet pipe.

[0007] Preferably, the backflow prevention mechanism includes a fixing plate fixedly connected to the inner wall of the outlet pipe, a telescopic rod is fixedly connected to the side wall of the fixing plate, a blocking block is fixedly connected to the end of the output end of the telescopic rod, a second spring is sleeved on the outer wall of the output end of the telescopic rod, and two ends of the second spring are respectively fixedly connected to the telescopic rod and the blocking block. A fixed block is fixedly connected to the inner wall of the outlet pipe.

[0008] Preferably, the bottom and both sides of the filter screen are abutted against the inner wall of the filter box.

[0009] Preferably, the bolt is arranged in a T shape, and a protective sleeve is sleeved on the outer wall of the end of the bolt away from the filter box. The material of the protective sleeve is silica gel.

[0010] Preferably, both ends of the fixing plate are fixedly installed on the inner wall of the water outlet pipe by welding.

[0011] Preferably, the plugging block is arranged in a frustum shape, and a water outlet is provided through the fixing block. The water outlet is arranged in a frustum shape that matches.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The impurities in the water can be filtered and intercepted through the filter screen. By regularly removing the filter screen, the intercepted filter substances can be cleaned to prevent the filter screen from being blocked.

[0014] 2. When the water flow is closed and stopped, under the action of the second spring, the plugging block is driven to move towards the fixing block until the plugging block blocks the water outlet, preventing the water after flowing through from flowing back, ensuring the one-way flow of the water path, and preventing the source of polluted water.

[0015] In summary, by setting the filter screen, the particulate impurities in the water flow can be intercepted. By disassembling the filter screen, it can be prevented from being blocked; by the anti-backflow mechanism, the water after flowing through can be prevented from flowing back. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a closing and water-stopping type mixing valve proposed by the present utility model;

[0017] Figure 2 is a schematic structural diagram of a disassembly and assembly mechanism in a closing and water-stopping type mixing valve proposed by the present utility model;

[0018] Figure 3 is a schematic structural diagram of an anti-backflow mechanism in a closing and water-stopping type mixing valve proposed by the present utility model.

[0019] In the figure: 1 closing and water-stopping type mixing valve body, 2 water inlet pipe, 3 filter box, 4 connecting pipe, 5 sealing block, 6 filter screen, 7 bolt, 8 first spring, 9 jack, 10 water outlet pipe, 11 fixing plate, 12 telescopic rod, 13 plugging block, 14 second spring, 15 fixing block. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Referring to Figures 1 - 3 , a shut-off water-stop type mixing valve, including a shut-off water-stop type mixing valve body 1, the shut-off water-stop type mixing valve body 1 can mix cold water and hot water, control the water flow size and switch. This technology is the prior art and will not be elaborated here.

[0022] Two water inlet pipes 2 are fixedly connected to the rear end of the shut-off water-stop type mixing valve body 1. Both of the two water inlet pipes 2 are fixedly connected with a filter box 3 communicated therewith. The side walls of the two filter boxes 3 are fixedly connected with a connecting pipe 4 communicated therewith. The two connecting pipes 4 are respectively connected to a hot water pipe and a cold water pipe to inject hot water and cold water. A disassembly and assembly mechanism is provided on each filter box 3. The disassembly and assembly mechanism includes an opening penetrating through the filter box 3. A sealing block 5 is provided on the opening in a sealing manner. A filter net 6 is fixedly connected to the bottom of the sealing block 5. The bottom and both sides of the filter net 6 are abutted against the inner wall of the filter box 3. By providing the filter net 6, particulate impurities in the water can be filtered and intercepted, avoiding blockage of subsequent pipelines after long-term use.

[0023] Two pins 7 slidably connected to the filter box 3 are provided through the filter box 3. The pins 7 are in a T shape. A protective sleeve is sleeved on the outer wall of the end of the pin 7 away from the filter box 3. The material of the protective sleeve is silica gel. A first spring 8 is sleeved on the outer wall of each pin 7. The two ends of each first spring 8 are respectively fixedly connected to the filter box 3 and the pin 7. Two insertion holes 9 are opened on the sealing block 5. The two pins 7 are respectively inserted into the insertion holes 9. By installing and disassembling the sealing block 5 and the filter net 6, blockage of the filter net 6 can be avoided.

[0024] A water outlet pipe 10 communicated therewith is fixedly connected to the front end of the shut-off water-stop type mixing valve body 1. The water outlet pipe 10 is connected to a water-using device such as a faucet or a shower head. An anti-backflow mechanism is provided in the water outlet pipe 10. The anti-backflow mechanism includes a fixing plate 11 fixedly connected to the inner wall of the water outlet pipe 10. Both ends of the fixing plate 11 are installed and fixed to the inner wall of the water outlet pipe 10 by welding. A telescopic rod 12 is fixedly connected to the side wall of the fixing plate 11. A blocking block 13 is fixedly connected to the end of the output end of the telescopic rod 12. A second spring 14 is sleeved on the outer wall of the output end of the telescopic rod 12. The two ends of the second spring 14 are respectively fixedly connected to the telescopic rod 12 and the blocking block 13. A fixing block 15 is fixedly connected to the inner wall of the water outlet pipe 10. The blocking block 13 is in a frustum shape. A water outlet is provided through the fixing block 15. The water outlet is in a frustum shape that matches, which can avoid the backflow of the flowing water and avoid polluting water resources.

[0025] In the present utility model, cold water and hot water are respectively injected through two connecting pipes 4. The cold water and hot water can be mixed by closing the water-stop type mixing valve body 1. This technology is prior art and will not be elaborated here. The mixed warm water is discharged through the water outlet pipe 10. During the water flow process, the impurities in the water can be filtered and intercepted by the filter net 6. The intercepted filter substances can be cleaned by regularly removing the filter net 6. The staff holds two pins 7 and moves them away from each other until the two pins 7 disengage from the jacks 9. During this process, the first spring 8 is stretched, and the sealing block 5 and the filter net 6 can be removed to clean the filter net 6 to prevent the filter net 6 from being blocked. When the water is flowing, the water flows through the fixing block 15 to the blocking block 13, and the blocking block 13 is driven to move towards the fixing plate 11 by the water flow impact force. During this process, the telescopic rod 12 contracts and the second spring 14 is compressed. When the water flow stops, the blocking block 13 is driven to move towards the fixing block 15 by the second spring 14 until the blocking block 13 blocks the water outlet to prevent the water after flowing through from flowing back, ensuring the one-way flow of the water path.

[0026] By providing a detachable filter net, the present utility model solves the problem in the prior art that particulate impurities still exist in cold water and hot water. After the water flows for a long time, the particulate impurities will block the valve or the water-using equipment connected to the valve, resulting in blockage of the pipeline.

Claims

1. A shut-off water-stop type mixing valve, comprising a shut-off water-stop type mixing valve body (1), characterized in that, Two water inlet pipes (2) are fixedly connected to the rear end of the shut-off water-stop type mixing water valve body (1). Two filter boxes (3) communicated with the water inlet pipes (2) are fixedly connected to the two water inlet pipes (2). Connecting pipes (4) communicated with the filter boxes (3) are fixedly connected to the side walls of the two filter boxes (3). A disassembly and assembly mechanism is provided on each filter box (3). An outlet pipe (10) communicated with the shut-off water-stop type mixing water valve body (1) is fixedly connected to the front end of the shut-off water-stop type mixing water valve body (1). A backflow prevention mechanism is provided in the outlet pipe (10). The disassembly and assembly mechanism includes an opening penetrating through the filter box (3). A sealing block (5) hermetically arranged with the opening is provided on the opening. A filter screen (6) is fixedly connected to the bottom of the sealing block (5). Two bolts (7) slidably connected with the filter box (3) penetrate through the filter box (3). A first spring (8) is sleeved on the outer wall of each bolt (7). Two ends of each first spring (8) are fixedly connected to the filter box (3) and the bolt (7) respectively. Two jacks (9) are formed in the sealing block (5). The two bolts (7) are respectively inserted into the jacks (9).

2. The shut-off water-stop type mixing valve according to claim 1, wherein, The backflow prevention mechanism includes a fixing plate (11) fixedly connected to the inner wall of the outlet pipe (10). A telescopic rod (12) is fixedly connected to the side wall of the fixing plate (11). A plugging block (13) is fixedly connected to the end of the output end of the telescopic rod (12). A second spring (14) is sleeved on the outer wall of the output end of the telescopic rod (12). Two ends of the second spring (14) are fixedly connected to the telescopic rod (12) and the plugging block (13) respectively. A fixing block (15) is fixedly connected to the inner wall of the outlet pipe (10).

3. The water mixing valve with shut-off water stop according to claim 1, characterized in that, The bottom and both sides of the filter screen (6) are abutted against the inner wall of the filter box (3).

4. A closing water-stop type mixing valve according to claim 1, characterized in that, The bolt (7) is arranged in a T shape. A protective sleeve is sleeved on the outer wall of the end of the bolt (7) away from the filter box (3). The protective sleeve is made of silica gel.

5. The water mixing valve with shut-off water stop according to claim 2, characterized in that Both ends of the fixing plate (11) are fixedly installed and fixed to the inner wall of the outlet pipe (10) by welding.

6. The water mixing valve with shut-off water stop according to claim 2, wherein, The plugging block (13) is arranged in a frustum shape. A water outlet is formed through the fixing block (15). The water outlet is arranged in a frustum shape that matches the plugging block (13).

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