Water meter shell with convertible valve body

Abstract

The utility model provides a water meter shell with a convertible valve body, which comprises a main machine core cavity arranged in the middle of the meter shell, a water inlet through hole and a water outlet through hole respectively arranged on two sides of the main machine core cavity, a screw head arranged at the outer diameter of the water inlet through hole, a valve body fixedly connected at the water outlet through hole, a screwed joint in threaded connection with the valve body, and a water outlet connected with the valve body. A pressing plate is fixed to the upper end of the meter shell, a ball valve is arranged in the middle of the valve body, a valve rod is inserted into a groove in the top of the ball valve, polytetrafluoroethylene pads are symmetrically arranged on the two sides of the ball valve, O-shaped rings A are fixedly connected to the outer sides of the polytetrafluoroethylene pads, and a plurality of O-shaped rings B are arranged between the valve rod and the valve body. The water meter shell can be connected with a DN40 valve body connector or a DN50 valve body connector according to the use requirement of a user, the connectors are changed along with the size of the valve body, later maintenance is facilitated, and the water meter shell has the advantages of being convenient to install and high in adaptability.

Description

Technical Field

[0001] The utility model belongs to the technical field of water meters, and in particular relates to a water meter case with a convertible valve body. Background Art

[0002] As a key component in the urban water supply network, the function of the water meter is directly related to the reliability of water use in each household. The traditional water meter case has a single connection interface in the water network pipeline, and the adaptability to the pipeline connection is poor when replaced or newly installed, which is inconvenient for later maintenance and replacement. This design proposes a water meter case with a convertible valve body. The ball valve of the water meter case can be connected with DN40 and DN50 threaded joints, which is convenient for later maintenance and has the characteristics of easy installation and strong adaptability.

[0003] Therefore, it is very necessary to invent a water meter case with a convertible valve body. Utility Model Content

[0004] In view of the technical problems that the water meter case has a single connection interface, poor adaptability to pipeline connection when replaced or newly installed, and inconvenient later maintenance and replacement, the utility model provides a water meter case with a convertible valve body, which adopts an integrated structure of a ball valve and a valve body. The ball valve can be connected to DN40 and DN50 threaded joints, which is convenient for maintenance and replacement and has strong adaptability.

[0005] A water meter case with a convertible valve body, characterized in that it includes a case, a valve body, a threaded joint, a ball valve, a pressure plate, a meter cover, a main engine cavity and a thread head; a main engine cavity is provided in the middle of the case, a water inlet through hole and a water outlet through hole are respectively provided on both sides of the main engine cavity, a thread head is provided at the outer diameter of the water inlet through hole, a valve body is fixedly connected to the water outlet through hole, the threaded joint is threadedly connected to the valve body, and a pressure plate is fixed to the upper end of the case.

[0006] Preferably, a ball valve is provided in the middle of the valve body, a valve stem is inserted in the groove on the top of the ball valve, a polytetrafluoro pad is symmetrically arranged on both sides of the ball valve, an O-ring A is fixedly connected to the outside of the polytetrafluoro pad, and a plurality of O-rings B are provided between the valve stem and the valve body. The O-ring A on the left side of the ball valve is located between the threaded joint and the ball valve.

[0007] Preferably, the casing is connected to the valve body by welding.

[0008] Preferably, thread sealant is applied to the threads connecting the valve body and the threaded joint.

[0009] Preferably, the valve body can be threadedly connected to a DN50 valve body.

[0010] Preferably, the valve body can be threadedly connected to a DN40 valve body.

[0011] Preferably, the watch case is made of 304 food grade stainless steel material in one piece.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The water meter case of the utility model can be connected to a DN40 valve body joint or a DN50 valve body joint according to user requirements. The joint changes with the size of the valve body, which is convenient for later maintenance and has the characteristics of easy installation and strong adaptability.

[0014] 2. The ball valve and the water meter case of the utility model adopt an integrated design, and the case and the valve body are welded together at one time, which ensures the sealing of the valve body and the case, reduces the number of pipeline connection interfaces, and improves the reliability of pipeline sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional structural diagram of the utility model.

[0016] Figure 2 This is a structural diagram of the DN50 valve body and valve body connection of the utility model.

[0017] Figure 3 This is a structural diagram of the DN40 valve body and valve body connection of the utility model.

[0018] In the figure,

[0019] 1- case, 2- valve body, 3- threaded joint, 4- ball valve, 5- O-ring A, 6- PTFE pad, 7- O-ring B, 8- valve stem, 9- pressure plate, 10- cover, 11- main engine cavity, 12- thread head, 13- DN50 valve body, 14- DN40 valve body. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings: Example

[0021] As attached Figures 1 to 3 As shown, the utility model provides a water meter case with a convertible valve body, characterized in that the device comprises a case 1, a valve body 2, a threaded joint 3, a ball valve 4, a pressure plate 9, a meter cover 10, a main engine cavity 11 and a thread head 12; a main engine cavity 11 is provided in the middle of the case 1, a water inlet through hole and a water outlet through hole are respectively provided on both sides of the main engine cavity 11, a thread head 12 is provided at the outer diameter of the water inlet through hole, a valve body 2 is fixedly connected to the water outlet through hole, the threaded joint 3 is threadedly connected to the valve body 2, and a pressure plate 9 is fixed to the upper end of the case 1.

[0022] Preferably, a ball valve 4 is provided in the middle of the valve body 2, a valve stem 8 is inserted in the groove on the top of the ball valve 4, a polytetrafluoro pad 6 is symmetrically arranged on both sides of the ball valve 4, an O-ring A5 is fixedly connected to the outside of the polytetrafluoro pad 6, and a plurality of O-rings B7 are provided between the valve stem 8 and the valve body 2 to ensure the sealing performance between the valve body 2 and the valve stem 8. The O-ring A5 on the left side of the ball valve 4 is located between the threaded joint 3 and the ball valve 4.

[0023] Furthermore, the case 1 is connected to the valve body 2 by welding, which reduces the number of connection interfaces on the pipeline, and welding is used to ensure the connection reliability and waterproof sealing between the case 1 and the valve body 2.

[0024] Furthermore, thread sealant is applied to the threaded connection between the valve body 2 and the threaded connector 3, and a wrench is used to lock the threaded connector 3 and the valve body 2, which has high sealing performance, reduces the number of pipeline connection interfaces, and ensures the sealing reliability of the valve body and the interface.

[0025] Furthermore, the valve body 2 can be threadedly connected to the DN50 valve body 13, and the DN50 valve body 13 or the threaded connector 3 can be selected according to the use requirements.

[0026] Furthermore, the valve body 2 can be threadedly connected to the DN40 valve body 14, and the DN40 valve body 14 or the threaded connector 3 can be selected according to the use requirements.

[0027] Furthermore, the housing 1 is made of 304 food-grade stainless steel material and is integrally formed. It has strong toughness and is highly adaptable when used in conjunction with a water meter. It also has strong wear resistance, corrosion resistance, and high temperature resistance.

[0028] The utility model provides a water inlet through hole and a water outlet through hole on both sides of the main engine cavity 11, a thread 12 is provided at the outer diameter of the water inlet through hole, a valve body 2 is welded at the water outlet through hole, a threaded joint 3 is threadedly connected to the valve body 2, thread sealant is applied to the connecting thread, and a wrench is used to lock the threaded joint 3 and the valve body 2, so as to have high sealing performance, reduce the number of pipeline connection interfaces, ensure the sealing reliability of the valve body 2 and the interface, and facilitate later maintenance. The water meter case 1 can be connected to a DN40 valve body 14 or a DN50 valve body 13 according to user requirements, and the joint changes with the size of the valve body 2, so as to facilitate later maintenance, and has the characteristics of easy installation and strong adaptability.

[0029] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A water meter case with a convertible valve body, characterized in that: The invention comprises a case (1), a valve body (2), a threaded joint (3), a ball valve (4), a pressure plate (9), a cover (10), a main engine core cavity (11) and a thread head (12); a main engine core cavity (11) is provided in the middle of the case (1), a water inlet through hole and a water outlet through hole are provided on both sides of the main engine core cavity (11), a thread head (12) is provided at the outer diameter of the water inlet through hole, a valve body (2) is fixedly connected to the water outlet through hole, the threaded joint (3) is threadedly connected to the valve body (2), and a pressure plate (9) is fixed at the upper end of the case (1).

2. The water meter housing with a convertible valve body as claimed in claim 1, characterized in that: A ball valve (4) is provided in the middle of the valve body (2), a valve stem (8) is inserted into a groove at the top of the ball valve (4), a polytetrafluoroethylene pad (6) is symmetrically arranged on both sides of the ball valve (4), an O-ring A (5) is fixedly connected to the outer side of the polytetrafluoroethylene pad (6), a plurality of O-rings B (7) are provided between the valve stem (8) and the valve body (2), and the O-ring A (5) on the left side of the ball valve (4) is located between the threaded joint (3) and the ball valve (4).

3. The water meter housing with a switchable valve body as claimed in claim 1, characterized in that: The watch case (1) is connected to the valve body (2) by welding.

4. The water meter housing with a switchable valve body as claimed in claim 1, characterized in that: Thread sealant is applied to the threaded connection between the valve body (2) and the threaded joint (3).

5. The water meter case with a switchable valve body as claimed in claim 1, characterized in that: The valve body (2) can be threadedly connected to a DN50 valve body (13).

6. The water meter housing with a switchable valve body as claimed in claim 1, characterized in that: The valve body (2) can be threadedly connected to a DN40 valve body (14).

7. The water meter case with a convertible valve body according to claim 1 or 2, characterized in that: The watch case (1) is made of 304 food-grade stainless steel material and is integrally formed.

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