Anti-theft water valve

Abstract

The closure of the valve body is fixed with the closure cap in the closed position, and the closure cap is fixed with the closure cap when the closure cap is in the closed position.

Description

Technical Field

[0001] The invention relates to a valve, in particular to an anti-theft water valve. Background Art

[0002] When water supply companies collect water bills on a daily basis, they will encounter many cases of unpaid water bills. They need to use water cut-off measures to urge payment of water bills, that is, closing the water valves to achieve the purpose of water cut-off. However, the keys to self-locking valves can now be purchased on the market, and users whose water supply is cut off can also buy them on the market or online, which does not achieve the purpose of truly stopping water supply. For the old-fashioned gate valve screw rod method, users can also directly find the same screw rod and insert it into the gate valve to open it. This also does not achieve the purpose of truly stopping water supply, and water theft is prone to occur, which will lead to great disputes and affect social harmony and spiritual civilization construction. Therefore, improvements and innovations in anti-theft water valves are imperative. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an anti-water theft valve, which can effectively solve the problem of water theft caused by the valve being easily opened.

[0004] To achieve the above purpose, the solution of the present invention is a theft-proof water valve, comprising a valve body, a flange, a gate and a valve cover, the valve cover is fixed on the valve body by bolts, the valve body is installed on the pipeline through the assembly holes on the flanges at both ends, a water baffle with one end extending out of the valve body is transversely installed in the upper part of the valve body, a sealing cover is installed on the valve body outside the water baffle extending out of the valve body by bolts, the upper and lower surfaces of the water baffle contacting the valve body are respectively provided with sealing rings in the sealing grooves on the inner wall of the valve body, the sealing steel ring is fixed in the valve body by screws, and the sealing ring is fixed in the sealing groove on the inner wall of the valve body by the sealing steel ring fixed by the screws;

[0005] The valve cover includes an opening and closing valve cover and a fixed valve cover. Under normal circumstances, the fixed valve cover is fixed to the valve body by fixing bolts. When the valve is opened or closed, the opening and closing valve cover is fixed to the valve body. The opening and closing valve cover is in the shape of a flat birdcage with a hollow interior. A vertical valve stem and a gate plate are installed inside the opening and closing valve cover. The upper end of the valve stem extends out of the opening and closing valve cover and is fixedly connected to the handle. A thread is provided on the circumferential surface of the valve stem inside the valve cover and is fixedly connected to the gate plate through a gate plate nut on the gate plate.

[0006] The invention has the advantages of simple structure, convenient operation and low manufacturing cost. A special opening and closing valve cover is required to open the valve. The invention has good anti-theft performance and remarkable social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the opening structure of the present invention (partial cross-section).

[0008] Figure 2It is a schematic diagram of the structure of the present invention when it is opened or closed (partially cut away). DETAILED DESCRIPTION

[0009] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings and specific circumstances.

[0010] In combination with the accompanying drawings, an anti-theft water valve is provided, comprising a valve body, a flange, a gate and a valve cover, the valve cover is fixed to the valve body by bolts, the valve body 15 is installed on the pipeline through the assembly holes on the flanges 14 at both ends, a water retaining plate 13 with one end extending out of the valve body 15 is transversely installed in the upper part of the valve body 15, a sealing cover 12 is installed on the valve body 15 outside the water retaining plate 13 extending out of the valve body 15 by bolts, the upper and lower surfaces of the water retaining plate 13 contacting the valve body 15 are respectively provided with sealing rings 11 in the sealing grooves of the inner wall of the valve body 15, a sealing steel ring 10 is fixed in the valve body 15 by screws, and the sealing ring 11 is fixed in the sealing groove of the inner wall of the valve body 15 by the sealing steel ring 10 fixed by screws;

[0011] The valve cover includes an opening and closing valve cover 3 and a fixed valve cover 9. Under normal circumstances, the fixed valve cover 9 is fixed to the valve body 15 by fixing bolts. When the valve is opened or closed, the opening and closing valve cover 3 is fixed to the valve body 15. The opening and closing valve cover 3 is in the shape of a flat birdcage with a hollow interior. A vertical valve stem 2 and a gate plate 4 are installed inside the opening and closing valve cover 3. The upper end of the valve stem 2 extends out of the opening and closing valve cover 3 and is fixedly connected to the handle 8. A thread is provided on the circumferential surface of the valve stem 2 inside the valve cover 3, and is fixedly connected to the gate plate 4 through a gate plate nut 1 on the gate plate 4.

[0012] To ensure better implementation effect, the gate plate 4 and the gate plate nut 1 are an integrated structure. The gate plate 4 is an elliptical flat plate body with a steel bracket installed inside the elliptical flat plate body. The gate plate nut 1 has threads that match the threads on the valve stem 2.

[0013] The lower end of the valve stem 2 extends out of the lower end of the gate plate 4. When the gate plate 4 is completely located in the valve body 15, the lower end of the valve stem 2 is located in the gate plate nut 1, that is, the length of the valve stem 2 located in the opening and closing valve cover 3 is greater than the sum of the vertical lengths of the gate plate 4 and the gate plate nut 1, ensuring that when the gate plate 4 fully enters the valve body 15 to reach a sealed state, the valve stem 2 and the gate plate nut 1 on the gate plate 4 are in a connected state, and the gate plate 4 will not be disconnected from the valve stem 2 when the gate plate 4 is not completely located in the valve body 15.

[0014] The sealing ring 11 is in the shape of a ring made of rubber.

[0015] When the present invention is used, the anti-theft water valve of the present invention is installed before or after the meter of the pipe network through the assembly hole on the flange. At this time, there is no gate in the valve body, the water channel is unobstructed, and the water retaining plate, sealing cover and fixed valve cover on the upper part of the valve body are sealed and water-stopped.

[0016] When the valve needs to be closed, first remove the fixed valve cover 9, install the opening and closing valve cover 3 to the upper part of the valve body 15, tighten the fastening bolts, then remove the sealing cover 12, and use the 4 bolt holes of the fixed sealing cover 12 to install the upper pull plate bracket 5, and the stretching screw 7 is connected to the pull plate bracket 5 through a thread (known technology), and one end of the stretching screw 7 is connected to the water baffle 13 through the U-shaped connection 6, and then the stretching screw 7 is rotated to pull out the water baffle 13. After the water baffle 13 is pulled out, the water baffle 13 is not completely pulled out at this time, and it can be pulled until it does not block the gate plate 4 from descending, and the hand on the opening and closing valve cover is manually turned. The handle 8 drives the valve stem 2 to rotate, so that the gate 4 moves downward into the bottom of the valve body to achieve the purpose of stopping water. At this time, the water in the valve body is no longer pressurized, loosen the fastening bolts of the opening and closing valve cover 3 and the valve body 15, rotate the opening and closing valve cover 3 to turn the valve stem 2 out of the gate nut 1, and the gate 4 remains in the valve body. Remove the opening and closing valve cover 3, tighten the fixed valve cover 9 and the valve body with bolts again, remove the pull plate bracket 5 and the water baffle 13, and reinstall the sealing cover 12. The water stopping procedure is completed, achieving the purpose of preventing water theft. If there is no matching opening and closing valve cover 3, it is impossible to open the valve to pass water.

[0017] When reopening the valve, remove the fixed valve cover 9 again, align the valve stem 2 of the opening and closing valve cover 3 with the screw hole of the gate nut 1 on the gate 4 in the valve body 15, rotate the opening and closing valve cover 3, screw the valve stem 2 into the gate nut 1 in the gate 4, then connect the opening and closing valve cover 3 to the valve body 15, tighten it with fastening bolts, remove the sealing cover 12, put the water baffle 13 into the baffle inlet, reinstall the pull plate bracket 5 and the stretching screw 7 using the 4 bolt holes of the fixed sealing cover 12, connect them with the water baffle 13 through the U-shaped connection 6, slightly turn the stretching screw 7, so that the water baffle 13 moves forward through the rubber sealing ring 11 in the valve body 15 to stop, that is, it does not block the gate 4 from being raised outward, and then turn the handle 8, the valve stem rotates to drive the gate 4 to move upward, so that the gate 4 is completely withdrawn from the valve body, at this time, the water pressure in the valve body is consistent with the pipeline. Then turn the tension screw 7 to push the water baffle 13 completely into the valve body 15. Due to the water pressure, the water baffle 13 and the rubber seal ring 11 are tightly pressed together to stop water. Then remove the pull plate bracket 5, install the sealing cover 12, remove the opening and closing valve cover 3, and tighten the fixed valve cover 9 with the valve body with bolts. At this time, there is no gate 4 in the valve body, and the valve returns to the normal water flow state.

[0018] The present invention has a simple structure and is easy to operate. Compared with the prior art, it has the following advantages:

[0019] 1. Lightweight and easy to install, the anti-theft water valve weighs only half of the ordinary valve, and can be installed manually without the need for lifting equipment;

[0020] 2. Good anti-theft performance. The common hand wheel valves and self-locking valves currently used can be bought everywhere because the self-locking keys can be bought everywhere. Users can open them very conveniently after the water supply is cut off. The present invention must be equipped with a special opening and closing valve cover to open the valve, and the anti-theft performance is very good;

[0021] 3. The cost is low. There are no gate plates, screws and other accessories in the valve body. Compared with ordinary gate valves, the material is greatly reduced, and the manufacturing cost is greatly reduced by more than 40%. Installing the opening and closing valve cover can also reduce the number of valves installed. It can be used for pipeline design requirements that valves must be installed for maintenance, but they are not used for a long time. Installing this valve can be closed or opened in a planned manner, saving a lot of money, and having significant social and economic benefits.

Claims

1. An anti-theft water valve, comprising a valve body, a flange, a gate and a valve cover, wherein the valve cover is fixed to the valve body by bolts, and is characterized in that: The valve body (15) is mounted on the pipeline via the assembly holes on the flanges (14) at both ends, a water baffle (13) with one end extending out of the valve body (15) is transversely mounted in the upper part of the valve body (15), a sealing cover (12) is mounted on the valve body (15) outside the water baffle (13) extending out of the valve body (15) via bolts, and sealing rings (11) are respectively mounted in the sealing grooves on the inner wall of the valve body (15) on the upper and lower surfaces where the water baffle (13) contacts the valve body (15), and the sealing steel ring (10) is fixed in the valve body (15) via screws, and the sealing ring (11) is fixed in the sealing groove on the inner wall of the valve body (15) via the sealing steel ring (10) fixed by screws; The valve cover comprises an opening and closing valve cover (3) and a fixed valve cover (9). Under normal circumstances, the fixed valve cover (9) is fixed to the valve body (15) by fixing bolts. When the valve is opened or closed, the opening and closing valve cover (3) is fixed to the valve body (15). The opening and closing valve cover (3) is in the shape of a flat birdcage with a hollow interior. A vertical valve stem (2) and a gate plate (4) are installed inside the opening and closing valve cover (3). The upper end of the valve stem (2) extends out of the opening and closing valve cover (3) and is fixedly connected to the handle (8). The circumferential surface of the valve stem (2) inside the valve cover (3) is The gate plate (4) is provided with threads and is fixedly connected to the gate plate (4) through a gate plate nut (1) on the gate plate (4); the gate plate (4) and the gate plate nut (1) are an integral structure, the gate plate (4) is an elliptical flat plate body, a steel bracket is installed in the elliptical flat plate body, and the gate plate nut (1) is provided with threads that match the threads on the valve stem (2); the lower end of the valve stem (2) extends out of the lower end of the gate plate (4), and when the gate plate (4) is completely located in the valve body (15), the lower end of the valve stem (2) is located in the gate plate nut (1); When the valve needs to be closed, the stretching screw (7) is rotated to pull out the water retaining plate (13), and the handle (8) on the opening and closing valve cover (3) is manually rotated to drive the valve stem (2) to rotate, thereby causing the gate plate (4) to move downward into the bottom of the valve body (15) to achieve the purpose of water stopping; when the valve is reopened, the valve stem (2) is rotated to drive the gate plate (4) to move upward, so that the gate plate (4) is completely withdrawn from the valve body (15), and then the stretching screw (7) is rotated to push the water retaining plate (13) completely into the valve body (15). Under the action of water pressure, the water retaining plate (13) and the rubber sealing ring (11) are tightly pressed together to achieve the purpose of water stopping.

2. The anti-theft water valve according to claim 1, characterized in that: The sealing ring (11) is in the shape of a ring made of rubber.

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