Internal backflow prevention type water meter

Abstract

The utility model belongs to the technical field of water meters, and particularly relates to an internal backflow prevention type water meter which comprises a water meter body, a water inlet pipe is fixedly connected to one side of the water meter body, a water outlet pipe is fixedly connected to the other side of the water meter body, connecting pipes are spirally connected to the interiors of the water inlet pipe and the water outlet pipe, and hexagonal rings are arranged on the outer walls of the connecting pipes. A mounting ring is fixed in the connecting pipe, a duckbilled valve body is fixed to one side of the mounting ring, guide pipes are fixed to the inner wall of the connecting pipe and located on the two sides of the duckbilled valve body, inserting rods are inserted into the guide pipes, sliding grooves are formed in the inner walls of the guide pipes, and sliding blocks in sliding connection with the sliding grooves are fixed to the outer walls of the inserting rods; a pressing plate is fixed at one end of the conduit outside the conduit; according to the utility model, the water inlet pipe and the water outlet pipe can be sealed when water is cut off and flows back, so that water can be effectively prevented from flowing back, the defect of metering deviation of the water meter is overcome, the measurement is more accurate, and the waste of water sources is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of water meters, and specifically relates to an internal anti-backflow type water meter. Background Art

[0002] Water meters are the main measuring instruments used to measure the flow of tap water through pipes. Its accuracy is directly related to the livelihood interests of thousands of households and even affects the development of social economy. Water meters are widely used in various scenarios. For example, in residential buildings, water meters are installed on the water inlet pipes of each household to measure the household's water consumption, help residents arrange water use reasonably, save water resources, and are used for billing to achieve fair and transparent water fee collection.

[0003] In the current water meter design, when a water failure causes water outage, water backflow often occurs. This backflow will cause the water meter to be unable to accurately measure the water consumption, which invisibly increases the ineffective loss and waste of water resources. Utility Model Content

[0004] The purpose of the utility model is to provide an internal anti-backflow water meter, which can seal the water inlet pipe and the water outlet pipe when the water flows back during water outage, and can effectively prevent the backflow of water, solve the defect of deviation in water meter measurement, make the measurement more accurate, and put an end to the waste of water resources.

[0005] The technical solutions adopted in this utility are as follows:

[0006] A water meter with internal backflow prevention comprises a water meter body, one side of the water meter body is fixedly connected to a water inlet pipe, the other side of the water meter body is fixedly connected to a water outlet pipe, the inside of the water inlet pipe and the water outlet pipe are both spirally connected with connecting pipes, the outer wall of the connecting pipe is provided with a hexagonal ring, the inside of the connecting pipe is fixed with a mounting ring, a duckbill valve body is fixed to one side of the mounting ring, the inner wall of the connecting pipe and both sides of the duckbill valve body are fixed with conduits, the inside of the conduit is plugged with a plug rod, the inner wall of the conduit is provided with a slide groove, the outer wall of the plug rod is fixed with a slider slidably connected to the slide groove, one end of the conduit is located outside the conduit and a pressure plate is fixed, one side of the two pressure plates are connected to the flattened end of the duckbill valve body.

[0007] Furthermore, a filter plate is arranged inside the connecting pipe.

[0008] Furthermore, the outer wall of the connecting pipe is fixed with limiting rings on both sides of the hexagonal ring, a sealing gasket is fixed on one side of the limiting ring, and the outer wall of the connecting pipe and one side of the limiting ring are provided with external threads.

[0009] Furthermore, the outer walls of the water inlet pipe and the water outlet pipe are both provided with first arrows, and both of the first arrows are facing the water outlet direction. The side walls of the hexagonal ring are both provided with second arrows, and the direction of the second arrows is the same as that of the first arrows.

[0010] Furthermore, a triangular baffle is provided on the inner wall of the connecting pipe and on one side of the duckbill valve body.

[0011] Furthermore, the duckbill valve body is made of silicone material.

[0012] The technical effects achieved by this utility model are:

[0013] The utility model discloses an internal anti-backflow type water meter, which is provided with a connecting pipe and a duckbill valve body, and is convenient for installing, fixing and disassembling the duckbill valve body. Through the setting of the duckbill valve body, when backflow occurs during water failure, the water inlet pipe and the water outlet pipe can be sealed, which can effectively prevent the backflow of water and solve the defect of deviation in the measurement of the water meter, make the measurement more accurate, and put an end to the waste of water resources. The first arrow and the second arrow can conveniently judge the installation direction of the water meter and the connecting pipe. The filter plate is provided, which is convenient for filtering the water entering the water meter, and prevents excessive impurities from accumulating in the water meter and affecting the normal operation of the water meter. The utility model is relatively practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the partial cutaway structure of the utility model;

[0016] Figure 3 This is a practical Figure 2 Schematic diagram of the enlarged structure of area A in the middle.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Water meter body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Connecting pipe; 5. First arrow; 6. Hexagonal ring; 7. Limit ring; 8. Second arrow; 9. Sealing gasket; 10. Mounting ring; 11. Duckbill valve body; 12. Conduit; 13. Connecting rod; 14. Spring; 15. Slider; 16. Pressure plate; 17. Filter plate; 18. Triangular baffle. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0020] like Figure 1-3As shown, an internal backflow prevention water meter comprises a water meter body 1, one side of the water meter body 1 is fixedly connected to a water inlet pipe 2, and the other side of the water meter body 1 is fixedly connected to a water outlet pipe 3, the inside of the water inlet pipe 2 and the water outlet pipe 3 are both spirally connected with a connecting pipe 4, and the inside of the water inlet pipe 2 and the water outlet pipe 3 are provided with internal threads, which are convenient for the installation, fixing and disassembly of the connecting pipe 4, and the outer wall of the connecting pipe 4 is provided with a hexagonal ring 6, which is convenient for screwing the connecting pipe 4 with the hexagonal ring 6 through an external wrench, which is more practical, and a mounting ring 10 is fixed inside the connecting pipe 4, and a duckbill valve body 11 is fixed on one side of the mounting ring 10, and a conduit 12 is fixed on the inner wall of the connecting pipe 4 and on both sides of the duckbill valve body 11, and a plug rod 13 is inserted into the inside of the conduit 12, and a slide groove is provided on the inner wall of the conduit 12, and a slider 15 slidably connected to the slide groove is fixed on the outer wall of the plug rod 13, and one end of the conduit 12 is located outside the conduit 12 and a pressure plate 16 is fixed, and one side of the two pressure plates 16 is connected to The flattened end of the duckbill valve body 11 is connected so that the pressure plate 16 squeezes the flattened end of the duckbill valve body 11, so that under the squeezing effect of the two pressure plates 16, the duckbill outlet of the duckbill valve body 11 has a good closing effect, which can effectively avoid the backflow of water. The structure is simple. The connecting pipe 4 and the duckbill valve body 11 set by the water inlet pipe 2 and the water outlet pipe 3 can avoid the backflow of water when the water source is closed, solve the defect of deviation in water meter measurement, make the measurement more accurate, and put an end to the waste of water source; a filter plate 17 is arranged inside the connecting pipe 4, which is convenient for filtering the water entering the water meter body 1 to prevent the accumulation of impurities in the water meter body 1 and affect the normal use of the water meter body 1; the duckbill valve body 11 is made of silicone material, and the silicone material itself is not easy to make the duckbill valve body 11 attached with dirt. In addition, the silicone material has excellent elasticity and can be used repeatedly without being easily deformed, thereby increasing the service life of the duckbill valve body 11;

[0021] like Figure 1-2 As shown, the outer wall of the connecting pipe 4 is fixed with a limiting ring 7 on both sides of the hexagonal ring 6, and a sealing gasket 9 is fixed on one side of the limiting ring 7. The outer wall of the connecting pipe 4 and one side of the limiting ring 7 are provided with external threads, which improves the stability of the installation of the connecting pipe 4. The equipment of the sealing gasket 9 improves the sealing performance of the connection of the connecting pipe 4;

[0022] like Figure 1-2 As shown, the outer walls of the water inlet pipe 2 and the water outlet pipe 3 are both provided with first arrows 5, and the two first arrows 5 are both facing the water outlet direction. The side walls of the hexagonal ring 6 are both provided with second arrows 8, and the direction of the second arrows 8 is the same as that of the first arrows 5. It is convenient to determine the installation direction of the water meter and the installation direction of the connecting pipe 4 according to the settings of the first arrows 5 and the second arrows 8, which is more practical.

[0023] like Figure 2As shown, a triangular baffle 18 is provided on the inner wall of the connecting pipe 4 and on one side of the duckbill valve body 11 to prevent water backflow and effectively disperse the impact of the backflowing water on the flattened end of the duckbill valve body 11, which is relatively perfect.

[0024] The working principle of the utility model is as follows: when in use, the arrow direction of the second arrow 8 is made consistent with the direction of the first arrow 5, and the connecting pipe 4 is screwed into the water inlet pipe 2 and the water outlet pipe 3 respectively. The setting of the arrows facilitates the accurate installation of the connecting pipe 4 and the water meter body 1. When the water flows into the water inlet pipe 2 through the connecting pipe 4, and then flows into the water meter body 1 from the water inlet pipe 2, and then flows out through the water outlet pipe 3, when the water flows into the duckbill valve body 11, the duckbill outlet of the duckbill valve body 11 is opened by the pressure of the water. At the same time, the duckbill outlet is opened so that the outer wall of the duckbill valve body 11 presses the pressure plate 1 to both sides respectively. 6, so that the pressure plate 16 squeezes the plug rod 13, and then squeezes the spring 14 through the plug rod 13, thereby ensuring that the duckbill outlet of the duckbill valve body 11 is opened for normal water flow. When the water source is closed, the water pressure decreases, the spring 14 resets, and the spring 14 pushes the plug rod 13 and drives the outer wall of the pressure plate 16 to be squeezed. Under the squeezing of the two pressure plates 16, the duckbill outlet is closed better, and the duckbill valve body 11 on the water inlet pipe 2 and the water outlet pipe 3 is closed, which can effectively prevent the backflow of water, solve the defect of deviation in water meter measurement, make the measurement more accurate, and put an end to the waste of water.

[0025] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An internal backflow prevention water meter, characterized in that: The invention comprises a water meter body (1), one side of the water meter body (1) is fixedly connected to a water inlet pipe (2), the other side of the water meter body (1) is fixedly connected to a water outlet pipe (3), the inside of the water inlet pipe (2) and the water outlet pipe (3) are both spirally connected to a connecting pipe (4), the outer wall of the connecting pipe (4) is provided with a hexagonal ring (6), the inside of the connecting pipe (4) is fixedly provided with a mounting ring (10), one side of the mounting ring (10) is fixedly provided with a duckbill valve body (11), the connecting pipe (4) is provided with a hexagonal ring (6), and the inside of the connecting pipe (4) is fixedly provided with a mounting ring (10). A conduit (12) is fixed on the inner wall of the tube (4) and on both sides of the duckbill valve body (11), a plug-in rod (13) is inserted into the interior of the conduit (12), a slide groove is provided on the inner wall of the conduit (12), a slider (15) slidably connected to the slide groove is fixed on the outer wall of the plug-in rod (13), and a pressure plate (16) is fixed on one end of the conduit (12) outside the conduit (12), and one side of the two pressure plates (16) is connected to the flattened end of the duckbill valve body (11).

2. An internal backflow prevention water meter according to claim 1, characterized in that: A filter plate (17) is arranged inside the connecting pipe (4).

3. The internal backflow prevention water meter according to claim 1, characterized in that: The outer wall of the connecting pipe (4) is located on both sides of the hexagonal ring (6) and a limiting ring (7) is fixed thereto, a sealing gasket (9) is fixed to one side of the limiting ring (7), and the outer wall of the connecting pipe (4) and one side of the limiting ring (7) are provided with external threads.

4. The internal backflow prevention water meter according to claim 1, characterized in that: The outer walls of the water inlet pipe (2) and the water outlet pipe (3) are both provided with first arrows (5), and the two first arrows (5) are both facing the water outlet direction; the side walls of the hexagonal ring (6) are both provided with second arrows (8), and the direction of the second arrows (8) is the same as that of the first arrows (5).

5. The internal backflow prevention water meter according to claim 1, characterized in that: A triangular baffle (18) is provided on the inner wall of the connecting pipe (4) and located on one side of the duckbill valve body (11).

6. An internal backflow prevention water meter according to claim 1, characterized in that: The duckbill valve body (11) is made of silicone material.

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