Anti-backflow water meter

Abstract

The utility model discloses an anti-backflow water meter which comprises a water meter body and further comprises a water inlet pipe, an installation block and a water return prevention device. The water inlet pipe is fixedly connected with a water inlet of the water meter body, a mounting block is integrally arranged in the water inlet pipe, and a mounting cavity with an opening in the upper end is formed in the mounting block; and the water return prevention device is detachably mounted in the mounting cavity. According to the water return prevention device, the water return prevention device is independently arranged in the water inlet pipe, when maintenance is needed, a pipeline does not need to be disassembled, later maintenance and replacement are facilitated, meanwhile, water cannot be stored in the water return prevention device, and bacterial pollution is avoided; and by arranging the first sealing gasket and the second sealing gasket, the backwater prevention device is installed in the installation cavity in a dual-sealing mode through the first sealing gasket and the second sealing gasket, and the device can be effectively prevented from leaking water.

Description

Technical Field

[0001] The utility model relates to the technical field of water meters, in particular to an anti-backflow water meter. Background Art

[0002] A water meter is a device used by households to measure water usage. It is a measuring tool for residents and water plants to count water usage and pay water bills. The faucets in users' homes are interconnected with the water supply network. When the water plant stops supplying water and the user turns on the faucet at home, the faucet's nozzle will suck air back into the water supply network, which may also bring in toxic gases or liquids. At the same time, backflow may cause the water meter to be inaccurate, resulting in disputes between users and water plants. Therefore, the prior art provides a water meter that prevents backflow.

[0003] For example, the utility model patent with patent number CN202323111082.0 discloses an anti-backflow smart water meter, which belongs to the technical field of smart water meters, including a smart water meter device body, the smart water meter device body is connected to an anti-backflow mechanism, an electronic sensing device is installed on the anti-backflow mechanism, and the smart water meter device body is connected to the electronic sensing device; the anti-backflow mechanism includes a mainstream structure and a tributary structure, the mainstream structure and the tributary structure are connected, and the mainstream structure is connected to the electronic sensing device; in these anti-backflow smart water meters, the smart water meter device body is connected to the mainstream structure in the above manner, and water flows from the mainstream structure to the smart water meter device body. If the water flows back, it will enter the tributary structure, and the tributary structure will prevent the water from continuing to flow. At this time, the electronic sensing device will be triggered, and the electronic sensing device will transmit the information of the backflow of water to the smart water meter device body.

[0004] Although this anti-backflow smart water meter can prevent water from continuing to flow through the tributary structure, water will accumulate in the tributary structure during the operation of the device, which may cause bacterial contamination. At the same time, when the anti-backflow device is damaged, the pipeline where the anti-backflow device is located needs to be disassembled and repaired, which makes the maintenance work troublesome; further improvement is needed. Utility Model Content

[0005] The utility model aims to provide an anti-backflow water meter, aiming to improve the existing anti-backflow water meter device. During operation, water will accumulate in the device, which may cause bacterial contamination. At the same time, when the anti-backflow device is damaged, the pipeline where the anti-backflow device is located needs to be disassembled and repaired, which makes the maintenance work troublesome.

[0006] The utility model is implemented as follows: an anti-backflow water meter comprises a water meter body, a water inlet pipe, a mounting block and an anti-backflow device; the water inlet pipe is fixedly connected to the water inlet of the water meter body, the water inlet pipe is integrally provided with a mounting block, and the mounting block is provided with an installation cavity with an upper end opening; the anti-backflow device is detachably installed in the installation cavity.

[0007] Preferably, the anti-backflow device includes an embedded plate, an upper cover and a limit plate, and the upper cover, the limit plate and the embedded plate are fixedly arranged in sequence from top to bottom and are adapted to be installed in the installation cavity; a limit platform is arranged inside the installation cavity corresponding to the position of the limit plate, the limit plate abuts against the limit platform, and the upper cover is located on the upper end surface of the installation cavity.

[0008] Preferably, the anti-backflow device also includes a movable cover, a movable groove is opened in the area of ​​the inner pipe of the inner embedded plate corresponding to the water inlet pipe, a rear baffle is arranged on the movable groove close to the direction of the water flow source, and a water outlet hole is opened in the middle of the rear baffle; an installation shaft is rotatably arranged on the upper end of the movable cover, and the movable cover is rotatably installed in the movable groove through the installation shaft, and abuts against the rear baffle to block the water outlet hole.

[0009] Preferably, a magnetic strip is provided in the contact area between the movable cover and the rear baffle, and a matching magnetic groove is provided at a position of the rear baffle corresponding to the magnetic strip, and the magnetic strip is adsorbed in the magnetic groove.

[0010] Preferably, it further includes mounting bolts, mounting ears are fixedly provided on both sides of the upper cover, and matching bolt sleeves are fixedly provided at the positions of the mounting ears corresponding to the mounting ears on the outside of the mounting cavity, and the mounting ears are detachably mounted on the bolt sleeves by mounting bolts.

[0011] Preferably, a first sealing gasket and a second sealing gasket are further included, and the upper cover abuts against the upper end surface of the installation cavity through the first sealing gasket; and the limiting plate abuts against the upper end surface of the limiting platform through the second sealing gasket.

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

[0013] 1. The utility model provides an anti-backwater device, and by separately arranging the anti-backwater device in the water inlet pipe, there is no need to disassemble the pipeline when maintenance is required, which is convenient for later maintenance and replacement. At the same time, no water will be stored in the anti-backwater device, avoiding bacterial contamination.

[0014] 2. The utility model provides a first sealing pad and a second sealing pad, and the anti-backflow device is installed in the installation cavity through double sealing of the first sealing pad and the second sealing pad, which can effectively prevent water leakage from the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic cross-sectional structural diagram of the mounting block of the utility model;

[0017] Figure 3 This utility model Figure 2 The structural diagram at A in the middle;

[0018] Figure 4 It is a structural schematic diagram of the water inlet pipe of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the utility model anti-backflow device in a closed state;

[0020] Figure 6 It is a structural schematic diagram of the utility model in the open state of the anti-backwater device.

[0021] In the figure: 1. water inlet pipe; 2. mounting block; 201. mounting cavity; 202. limit platform; 203. bolt sleeve; 3. anti-backflow device; 301. embedded plate; 302. movable cover; 303. mounting shaft; 304. upper cover; 305. mounting ear; 306. limit plate; 307. magnetic strip; 308. movable groove; 309. water outlet; 310. rear baffle; 311. magnetic groove; 4. mounting bolt; 5. water meter body; 6. first sealing gasket; 7. second sealing gasket. DETAILED DESCRIPTION

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following is a further description with reference to the accompanying drawings and specific embodiments: Example

[0024] like Figure 1 and Figure 4-Figure 5As shown, an anti-backflow water meter includes a water meter body 5, and also includes a water inlet pipe 1, a mounting block 2 and an anti-backflow device 3; the water inlet pipe 1 and the water inlet of the water meter body 5 are fixedly connected, the water inlet pipe 1 and the water meter body 5 are integrally formed, the water inlet pipe 1 is integrally provided with a mounting block 2, and the mounting block 2 is provided with a mounting cavity 201 with an upper end opening, the interior of the mounting cavity and the internal pipeline of the water inlet pipe 1 are the same, and do not affect the water flow transmission; the anti-backflow device 3 can be detachably installed in the mounting cavity 201, the anti-backflow device 3 is used to make the water flow unidirectionally transmitted, and can be easily disassembled and replaced and maintained. The anti-backflow device 3 includes an inner plate 301, an upper cover 304 and a limiting plate 306. The upper cover 304, the limiting plate 306 and the inner plate 301 are fixedly arranged in sequence from top to bottom and are installed in the installation cavity 201 in a corresponding manner. The upper cover 304, the limiting plate 306 and the inner plate 301 are an integral structure, and the internal structure of the installation cavity 201 is located in the installation cavity 201; a limiting platform 202 is arranged inside the installation cavity 201 at a position corresponding to the limiting plate 306, and the limiting plate 306 abuts against the limiting platform 202. The height of the limiting platform 202 is lower than the upper port of the installation cavity 201, and the limiting plate can be installed in the installation cavity 201 through the limiting plate, and the lower end abuts against the limiting platform 202, so that the anti-backflow device 3 is accurately installed in the installation cavity 201, and the upper cover 304 is located on the upper end surface of the installation cavity 201.

[0025] like Figure 2 , Figure 3 and Figure 5 As shown, it also includes mounting bolts 4, mounting ears 305 are fixedly provided on both sides of the upper cover 304, and matching bolt sleeves 203 are fixedly provided on the outer side of the mounting cavity 201 corresponding to the positions of the mounting ears 305. The mounting ears 305 are detachably mounted on the bolt sleeves 203 through the mounting bolts 4, and the anti-backflow device 3 is detachably mounted on the mounting block 2 through the mounting bolts 4, which is convenient for later disassembly and maintenance; it also includes a first sealing gasket 6 and a second sealing gasket 7, the lower end surface of the upper cover 304 is provided with a first sealing gasket 6, and the upper cover 304 abuts against the upper end surface of the mounting cavity 201 through the first sealing gasket 6; the lower end surface of the limiting plate 306 is provided with a second sealing gasket 7, and the limiting plate 306 abuts against the upper end surface of the limiting platform 202 through the second sealing gasket 7, and the first sealing gasket 6 and the second sealing gasket 7 can be used to double-seal the installation gap between the anti-backflow device 3 and the mounting block 2 to prevent water leakage.

[0026] like Figure 5 and Figure 6As shown, the anti-backflow device 3 also includes a movable cover 302, and a movable groove 308 is provided in the area of ​​the inner pipe of the inner plate 301 corresponding to the water inlet pipe 1. The movable groove 308 is provided with a rear baffle 310 near the direction of the water flow source, and a water outlet hole 309 is provided in the middle of the rear baffle 310, so that the water flow can be normally transmitted through the water outlet hole; the upper end of the movable cover 302 is rotatably provided with a mounting shaft 303, and the movable cover 302 is rotatably installed in the movable groove 308 through the mounting shaft 303, and abuts on the rear baffle 310 to cover the water outlet hole 309. When the water flow is transmitted along the specified direction The movable cover 302 will be washed away by the water flow and will not affect the normal transmission function of the water inlet pipe 1. When the water flow reverses, the movable cover 302 will be blocked by the rear baffle, so that the water flow cannot reversely flow back; the abutting area of ​​the movable cover 302 and the rear baffle 310 is provided with a magnetic attraction strip 307, and the rear baffle 310 is provided with a matching magnetic attraction groove 311 at the position corresponding to the magnetic attraction strip 307. The magnetic attraction strip 307 is adsorbed in the magnetic attraction groove 311. By providing the magnetic attraction strip 307 and the magnetic attraction groove 311, the movable cover 302 can be automatically adsorbed on the rear baffle 310 when it is not affected by the running water. Example

[0027] like Figure 1-Figure 5 As shown, an anti-backflow water meter includes a water meter body 5, and also includes a water inlet pipe 1, a mounting block 2 and an anti-backflow device 3; the water inlet pipe 1 and the water inlet of the water meter body 5 are fixedly connected, and the water inlet pipe 1 is integrally provided with a mounting block 2, and the mounting block 2 is provided with a mounting cavity 201 with an upper end opening; the anti-backflow device 3 is detachably installed in the mounting cavity 201. The anti-backflow device 3 includes an inner panel 301, an upper cover 304 and a limiting plate 306, and the upper cover 304, the limiting plate 306 and the inner panel 301 are fixedly arranged in sequence from top to bottom, and are adapted to be installed in the mounting cavity 201; a limiting platform 202 is provided inside the mounting cavity 201 at a position corresponding to the limiting plate 306, and the limiting plate 306 abuts against the limiting platform 202, and the upper cover 304 is located on the upper end surface of the mounting cavity 201, and also includes mounting bolts 4, the upper cover 304 Mounting ears 305 are fixedly provided on both sides, and matching bolt sleeves 203 are fixedly provided on the outer side of the mounting cavity 201 at the positions corresponding to the mounting ears 305. The mounting ears 305 are detachably mounted on the bolt sleeves 203 through mounting bolts 4; in addition, a first sealing gasket 6 and a second sealing gasket 7 are included, and the upper cover 304 abuts against the upper end surface of the mounting cavity 201 through the first sealing gasket 6; the limiting plate 306 abuts against the upper end surface of the limiting platform 202 through the second sealing gasket 7.

[0028] like Figure 5 and Figure 6As shown, the anti-backflow device 3 also includes a movable cover 302, and a movable groove 308 is provided in the area of ​​the inner pipe of the inner plate 301 corresponding to the water inlet pipe 1. The movable groove 308 is provided with a rear baffle 310 near the direction of the water flow source, and a water outlet hole 309 is provided in the middle of the rear baffle 310, so that the water flow can be normally transmitted through the water outlet hole; the upper end of the movable cover 302 is rotatably provided with a mounting shaft 303, and the movable cover 302 is rotatably installed in the movable groove 308 through the mounting shaft 303, and abuts on the rear baffle 310 to cover the water outlet hole 309. When the water flow is transmitted along the specified direction The movable cover 302 will be washed away by the water flow and will not affect the normal transmission function of the water inlet pipe 1. When the water flow reverses, the movable cover 302 will be blocked by the rear baffle, so that the water flow cannot reversely flow back; the abutting area of ​​the movable cover 302 and the rear baffle 310 is provided with a magnetic attraction strip 307, and the rear baffle 310 is provided with a matching magnetic attraction groove 311 at the position corresponding to the magnetic attraction strip 307. The magnetic attraction strip 307 is adsorbed in the magnetic attraction groove 311. By providing the magnetic attraction strip 307 and the magnetic attraction groove 311, the movable cover 302 can be automatically adsorbed on the rear baffle 310 when it is not affected by the running water.

[0029] The working principle of the utility model is as follows: when the water plant delivers water to the user's home, the water flows into the water meter through the water inlet pipe 1. At the same time, the anti-backflow device 3 in the installation block 2 does not affect the normal flow direction of the water. The movable cover 302 automatically separates from the rear baffle 310 under the action of the water flow force, so that the water can flow normally. When special circumstances such as water outage occur, there is no water flow force. The movable cover 302 is automatically adsorbed on the rear baffle 310 under the action of its own gravity and magnetic attraction to prevent backflow. At the same time, when the anti-backflow device 3 is damaged, the mounting bolts 4 can be removed and the anti-backflow device 3 can be replaced.

[0030] To sum up, the utility model provides an anti-backflow device 3, and by separately arranging the anti-backflow device 3 in the water inlet pipe 1, there is no need to disassemble the pipe when maintenance is required, which is convenient for later maintenance and replacement. At the same time, no water will be stored in the anti-backflow device 3, thereby avoiding bacterial contamination. By arranging the first sealing gasket 6 and the second sealing gasket 7, the anti-backflow device 3 is installed in the installation cavity 201 with double sealing by the first sealing gasket 6 and the second sealing gasket 7, which can effectively prevent water leakage from the device.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A backflow prevention water meter, comprising a water meter body (5), characterized in that: It also comprises a water inlet pipe (1), a mounting block (2) and a water backflow prevention device (3); the water inlet pipe (1) is fixedly connected to the water inlet of the water meter body (5); the water inlet pipe (1) is integrally provided with a mounting block (2); the mounting block (2) is provided with a mounting cavity (201) with an upper end opening; the water backflow prevention device (3) is detachably mounted in the mounting cavity (201).

2. The anti-backflow water meter according to claim 1, characterized in that: The anti-backflow device (3) comprises an inner panel (301), an upper cover (304) and a limiting plate (306); the upper cover (304), the limiting plate (306) and the inner panel (301) are fixedly arranged in sequence from top to bottom and are adapted to be installed in the installation cavity (201); a limiting platform (202) is arranged inside the installation cavity (201) at a position corresponding to the limiting plate (306); the limiting plate (306) abuts against the limiting platform (202); and the upper cover (304) is seated on the upper end surface of the installation cavity (201).

3. The anti-backflow water meter according to claim 2, characterized in that: The anti-backflow device (3) further comprises a movable cover (302); a movable groove (308) is provided in a region of the inner plate (301) corresponding to the inner pipe of the water inlet pipe (1); a rear baffle (310) is provided near the direction of the water flow source of the movable groove (308); a water outlet hole (309) is provided in the middle of the rear baffle (310); a mounting shaft (303) is rotatably provided at the upper end of the movable cover (302); the movable cover (302) is rotatably mounted in the movable groove (308) via the mounting shaft (303), and abuts against the rear baffle (310) to cover the water outlet hole (309).

4. The anti-backflow water meter according to claim 3, characterized in that: A magnetic attraction strip (307) is provided in the abutting area between the movable cover (302) and the rear baffle (310), and a matching magnetic attraction groove (311) is provided at a position of the rear baffle (310) corresponding to the magnetic attraction strip (307), and the magnetic attraction strip (307) is adsorbed in the magnetic attraction groove (311).

5. The backflow prevention water meter according to claim 2, characterized in that: Furthermore, it comprises mounting bolts (4), mounting ears (305) are fixedly provided on both sides of the upper cover (304), and matching bolt sleeves (203) are fixedly provided on the outside of the mounting cavity (201) at positions corresponding to the mounting ears (305), and the mounting ears (305) are detachably mounted on the bolt sleeves (203) via the mounting bolts (4).

6. The anti-backflow water meter according to claim 2, characterized in that: It also includes a first sealing gasket (6) and a second sealing gasket (7); the upper cover (304) abuts against the upper end surface of the installation cavity (201) through the first sealing gasket (6); and the limiting plate (306) abuts against the upper end surface of the limiting platform (202) through the second sealing gasket (7).

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