CN205173551U - Combined ball valve with filter, sewage discharging and safety decompression functions - Google Patents

Abstract

The utility model provides a combined ball valve with the function of filtering sewage and safety pressure relief, which comprises a ball valve, a sewage valve, a safety valve and a filter screen set in the internal channel of the oblique interface of the valve body, and is characterized in that: the ball valve After the two sides of the ball valve core set in the valve cavity are relatively connected with the sealing ring, the lock nut screwed on the side of the water inlet channel of the ball valve is locked and fixed; The pipe threaded joints of the body can be connected with transitional fittings of different structures according to the needs of pipeline fittings on the pipe threaded joints. The combination ball valve of the utility model not only integrates the functions of opening and closing control, filtration and discharge and safety pressure relief, but also has the characteristics of high reliability in use and flexible installation and connection.

Description

A combined ball valve with the function of filtering sewage and safety pressure relief

technical field

The utility model relates to a ball valve, in particular to a combined ball valve which is installed at the front end of tap water inlet and is used for opening and closing control of residential water supply pipelines.

Background technique

The tap water is equipped with a valve at the front end of the household to control the opening and closing of the residential water supply pipeline, also known as a water supply valve, usually using a ball valve or a gate valve; in order to prevent the suspended sediment in the tap water from entering the user, a filter sewage valve is also required; In addition, In order to suppress the water hammer effect in the water supply pipeline, an additional safety pressure relief valve needs to be installed; the water supply valve, filter sewage valve and safety pressure relief valve in the prior art are different types of pipeline devices that are independent of each other and have a single function. They need to be separately installed and connected to the water heating pipeline, and additional three-way pipe fittings need to be added, which increases the cost of the water heating pipeline and troublesome construction and installation; therefore, the prior art has the problems and deficiencies of labor-intensive, time-consuming, and high cost.

In order to solve the problems existing in the above existing technologies, the company's prior patent application for Chinese utility model patent application number: "201220666722.7" discloses "a combination ball valve with filter sewage discharge and safety pressure relief function", the combination ball valve will The ball valve, the filter blowdown valve, and the safety pressure relief valve are organically combined, so that one valve can play the role of three valves at the same time, and the installation and construction are convenient, labor-saving and time-saving, and the cost is reduced. However, this combination ball valve has also exposed a problem in actual use, that is, there is an unreasonable place in the structural design of the ball valve part, as shown in Figure 7, the side of the ball valve core a2 of the ball valve relies on the sealing rubber ring a3 and the same The water inlet joint a4 screwed to the valve body a1 is positioned and fixed. When in use, the screw joint between the water inlet joint a4 and the valve body a1 is likely to loosen during the construction of the connection with the pipeline or the maintenance of the pipeline, which will affect the The sealing of the ball valve is even damaged, making the entire combined ball valve unusable.

Utility model content

The technical problem to be solved by the utility model is to provide a combined ball valve with the functions of filtering sewage and safety pressure relief, which is designed to correct the positioning and fixing structure of the ball valve core of the ball valve part of the combined ball valve.

The technical solution adopted by the utility model is: a combined ball valve with the function of filtering sewage and safety pressure relief, including a ball valve, a sewage valve, a safety valve and a filter screen set in the internal channel of the oblique interface of the valve body, which is characterized in that : After the two sides of the ball valve core arranged in the valve cavity of the ball valve are relatively connected with the sealing ring, the lock nut screwed is arranged on the side of the water inlet channel of the ball valve to lock and fix, and the water inlet channel of the ball valve is set. There is a pipe thread joint connected with the valve body.

Further, a notch is provided on the side of the lock nut close to the sealing ring, and the notch is matched with the outer peripheral surface of the sealing ring.

Further, the pipe threaded joint is an internal pipe threaded joint.

Further, the pipe threaded joint is an external pipe threaded joint.

Further, the pipe threaded joint of the ball valve is also connected with a welded pipe joint.

Further, the pipe threaded joint of the ball valve is also connected with an internal threaded pipe joint.

Further, the pipe threaded joint of the ball valve is also connected with an external threaded pipe joint.

Compared with the previous patent application of our company, the utility model has the advantages of: due to the correction and design of the ball valve core positioning and fixing structure of the ball valve part of the previous combined ball valve, the water inlet joint of the ball valve part of the combined ball valve is connected to the The valve body is connected as a whole, and the valve core of the ball valve is positioned and fixed by a lock nut that is separately screwed with the valve body. Moreover, three transitional fittings with different structures are designed to connect with the water inlet joint. The combination ball valve of the present utility model not only maintains the functions of opening and closing control, filtration and sewage discharge and safety pressure relief of the original combination ball valve, but also improves the reliability of use. At the same time, in actual use, the user can In order to meet the needs of pipeline fitting, choose the combination ball valve connected with transition fitting pipe joints of different structures, which increases the flexibility of use.

Description of drawings

Fig. 1 is the external structure axonometric schematic diagram of the present utility model;

Fig. 2 is a partial sectional view of the utility model;

Fig. 3 is an enlarged view of the partially cut-away part of Fig. 2;

Fig. 4 is a partial cross-sectional schematic diagram of the utility model after the water inlet port is fitted with a welded pipe joint;

Fig. 5 is a partial cross-sectional schematic diagram of the utility model after the water inlet port is fitted with an internally threaded pipe joint;

Fig. 6 is a partial cross-sectional schematic diagram of the utility model after the water inlet port is fitted with an externally threaded pipe joint;

Fig. 7 is a schematic cross-sectional view of a ball valve part of a combined ball valve with filtering sewage discharge and safety pressure relief functions previously applied by our company.

detailed description

Below in conjunction with the embodiment in the accompanying drawings the utility model is described in further detail.

Referring to Fig. 1 to Fig. 3, a combined ball valve with functions of filtration, sewage discharge and safety pressure relief of the present utility model includes a ball valve 1, a sewage valve 2, a safety valve 3 and a valve body provided in the internal channel of the oblique interface. The filter screen 4 is characterized in that: after the two sides of the ball valve core 11 set in the valve cavity of the ball valve 1 are connected to the sealing ring 12, the lock nut 13 screwed on the side of the water inlet channel of the ball valve 1 is locked and positioned Fixed, the lock nut 13 is provided with a notch 131 on the side of the sealing ring 12, and the notch is connected with the outer peripheral surface of the sealing ring; the water inlet port of the ball valve 1 is provided with a pipe thread connected with the valve body The structure of the joint 14 and the pipe threaded joint 14 can be set as an inner pipe threaded joint or an outer pipe threaded joint, and this embodiment is in the form of an inner pipe threaded joint. In order to meet the needs of pipeline matching in actual use, three transitional fittings with different structures are designed to connect with the pipe threaded joints at the water inlet. The combined ball valve with the function of filtering sewage and safety pressure relief is suitable for the occasion of welding connection with the pipeline when used and installed; as shown in Figure 5 and Figure 6, a kind of connection with an internal thread pipe joint 16 and an external valve is shown respectively. The combined ball valve with filter sewage discharge and safety pressure relief functions of the threaded pipe joint 17 is suitable for the occasion of screw connection with the pipeline during installation. The above-mentioned three different structures of transition fitting pipe joints and pipe threaded joints 14 are also provided with sealing rubber rings 18 on the inner side of the threaded joints to ensure the tightness of the joints.

Claims (7)

1. one kind has the Combined ball valve filtering blowdown and safety relief function, comprise the filter screen (4) arranged in the inner passage of ball valve (1), blowdown valve (2), safety valve (3) and the oblique interface of valve body, it is characterized in that: after ball valve core (11) both sides arranged in the valve pocket of described ball valve (1) connect seal ring (12) relatively, locking nut (13) locking and positioning be spirally connected is set by ball valve (1) feed-water end passage side and fixes; The feed-water end passway of described ball valve (1) is provided with and the pipe screw joint of valve body disjunctor (14).

2. a kind of Combined ball valve with filtration blowdown and safety relief function according to claim 1, it is characterized in that: described locking nut (13) is provided with notch portion (131) by seal ring (12) side, and notch portion and seal ring outer circumferential face are connected.

3. a kind of Combined ball valve with filtration blowdown and safety relief function according to claim 1, is characterized in that: described pipe screw joint (14) is Internal Pipe Thread joint.

4. a kind of Combined ball valve with filtration blowdown and safety relief function according to claim 1, is characterized in that: described pipe screw joint (14) is external pipe thread joint.

5. a kind of Combined ball valve with filtration blowdown and safety relief function according to claim 1,2,3 or 4, is characterized in that: the pipe screw joint (14) of described ball valve (1) is also connected with welded stub connection (15).

6. a kind of Combined ball valve with filtration blowdown and safety relief function according to claim 1,2,3 or 4, is characterized in that: the pipe screw joint (14) of described ball valve (1) is also connected with female union (16).

7. a kind of Combined ball valve with filtration blowdown and safety relief function according to claim 1,2,3 or 4, is characterized in that: the pipe screw joint (14) of described ball valve (1) is also connected with male connector (17).