Ball valve with non-return function

Abstract

The utility model provides a ball valve with a non-return function, and belongs to the technical field of valves. The problems that an existing pipeline is complex in structure, high in cost and large in occupied space, pipeline connectors and leakage points are increased, and pipeline safety is not facilitated are solved. The ball valve with the non-return function comprises a valve body, a circulation pipeline for liquid circulation is arranged in the valve body, a valve ball is arranged in the ball valve, a control switch is arranged on the ball valve, a connector is arranged at the front end of the valve ball, a fixing piece is arranged between the connector and the valve body, and a water passing hole for liquid circulation is formed in the front end of the fixing piece. A non-return piece for controlling the opening and closing of the water passing hole is mounted on the fixing piece, the non-return piece is composed of a water baffle, a pressing plate and a connecting spring, the pressing plate is arranged on the right side of the non-return piece, and the water baffle is connected with the pressing plate through a connecting rod. The non-return valve has the advantage of having a non-return function.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a ball valve, in particular to a ball valve with a check function. Background Art

[0002] Ball valves are used to cut off, distribute and change the flow direction of media in pipelines that convey media. They are widely used due to their simple structure and easy operation. For example, they are widely used in industrial and civil pipelines such as gas and water heating. However, ordinary ball valves can only connect and shut off the flow. Under normal circumstances, they are bidirectional and cannot prevent the backflow of the media. When metering instruments, water pumps and other equipment are installed on the pipeline, and the medium is required not to flow back or to be emptied, a check valve with a one-way flow limiting function is usually installed on the pipeline to prevent the backflow of the medium in the pipeline. This makes the pipeline structure complicated, the cost increases, and the space occupied is large. In addition, it increases the pipeline interface and leakage points, which is not conducive to pipeline safety. Summary of the Invention

[0003] The purpose of the utility model is to provide a ball valve with a check function in order to solve the above problems in the prior art.

[0004] The objectives of the utility model can be achieved through the following technical solutions: a ball valve with a check function, comprising a valve body, the valve body having a circulation pipe for liquid circulation, the ball valve being provided with a valve ball for controlling the opening and closing of the circulation pipe, and the ball valve being characterized in that the ball valve is provided with a control switch for controlling the valve ball, a connecting head being provided at the front end of the valve ball, a fixing member being provided between the connecting head and the valve body, a water hole for liquid circulation being provided at the front end of the fixing member, a check member for controlling the opening and closing of the water hole being installed on the fixing member, the check member being composed of a water baffle, a pressure plate and a connecting spring, the water baffle being provided on the left side of the check member, and one end of the water baffle being connected to the fixing member and being used to close the water hole, the pressure plate being provided on the right side of the check member, the water baffle and the pressure plate being connected by a connecting rod, the pressure plate moving back and forth on the fixing member under the action of water pressure to control the check of the fluid.

[0005] In the above-mentioned ball valve with a check function, a protrusion is provided on the fixing member, one end of the connecting spring is connected to the pressure plate, and the other end of the connecting spring is connected to the protrusion.

[0006] In the above-mentioned ball valve with a check function, the diameter of the fixing member is gradually increased from left to right, and the diameter of the water baffle is larger than the diameter of the front end of the fixing member.

[0007] In the above-mentioned ball valve with a check function, blocks are provided on both sides of the control switch, and the control switch can rotate from 0 to 180 degrees on the valve stem.

[0008] Compared with the prior art, the ball valve with a check function is provided with a fixing piece between the connecting piece and the valve body, and the check piece provided on the fixing piece plays a check role on the valve body, thereby improving pipeline safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present utility model.

[0010] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0011] In the figure, 1. valve body; 2. flow pipe; 3. valve ball; 4. control switch; 5. connector; 6. fixing part; 7. water hole; 8. water baffle; 9. pressure plate; 10. connecting spring; 11. protrusion; 12. stopper. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0013] like Figure 1 、 Figure 2 As shown, the ball valve with a check function comprises a valve body 1, wherein the valve body 1 has a flow pipe 2 for liquid circulation, a valve ball 3 for controlling the opening and closing of the flow pipe 2 is provided in the ball valve, a control switch 4 for controlling the valve ball 3 is provided on the ball valve, a connector 5 is provided at the front end of the valve ball 3, a sealing ring is installed between the connector 5 and the valve body 1 to strengthen the sealing between the connector 5 and the valve body 1, a fixing member 6 is provided between the connector 5 and the valve body 1, and a fixing member 6 is provided at the front end of the fixing member 6. The water flow hole 7, the fixing part 6 is equipped with a check piece for controlling the opening and closing of the water flow hole 7, and a mounting groove for installing the check piece is opened on the connecting part. The check piece is composed of a water baffle 8, a pressure plate 9 and a connecting spring 10. The water baffle 8 is arranged on the left side of the check piece, and one end of the water baffle 8 is connected to the fixing part 6 and is used to close the water flow hole 7. The pressure plate 9 is arranged on the right side of the check piece. The water baffle 8 and the pressure plate 9 are connected by a connecting rod. The pressure plate 9 moves back and forth on the fixing part 6 under the action of water pressure to control the check of the fluid.

[0014] To be more specific, when the flow pipe 2 in the valve body 1 is in the open state, the liquid passes through the valve ball 3 and exerts pressure on the pressure plate 9, causing the water retaining part to move to the left, the connecting spring 10 is in a compressed state, and the liquid can flow out from the water hole 7. When the flow pipe 2 in the valve body 1 is in the closed state, the connecting spring 10 rebounds, the water retaining part is re-attached to the fixing part 6, and the water hole 7 is closed, thereby preventing the liquid from flowing back.

[0015] In further detail, a protrusion 11 is provided on the fixing member 6 , one end of the connecting spring 10 is connected to the pressure plate 9 , and the other end of the connecting spring 10 is connected to the protrusion 11 .

[0016] To be more specific, the diameter of the fixing member 6 is gradually increased from left to right, and the diameter of the water baffle 8 is larger than the diameter of the front end of the fixing member 6.

[0017] In further detail, both sides of the control switch 4 are provided with a stopper 12, and the control switch 4 can rotate from 0 to 180 degrees on the valve stem. The setting of the stoppers 12 on both sides is used to limit the rotation angle of the control switch 4.

[0018] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0019] Although this document frequently uses terms such as valve body 1, flow pipe 2, valve ball 3, control switch 4, connector 5, fixing member 6, water hole 7, water retaining plate 8, pressure plate 9, connecting spring 10, protrusion 11, and stopper 12, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A ball valve with a check function, comprising a valve body (1), wherein the valve body (1) has a flow pipe (2) for liquid circulation, and wherein a valve ball (3) is provided in the ball valve for controlling the opening and closing of the flow pipe (2), wherein the valve body (1) has a valve body (2) for liquid circulation, and wherein the valve ball (3) is provided in the ball valve for controlling the opening and closing of the flow pipe (2), wherein the valve body (1) has a check function, The ball valve is provided with a control switch (4) for controlling the valve ball (3), a connector (5) is provided at the front end of the valve ball (3), a fixing member (6) is provided between the connector (5) and the valve body (1), a water hole (7) for liquid circulation is provided at the front end of the fixing member (6), a check member for controlling the opening and closing of the water hole (7) is installed on the fixing member (6), and the check member is composed of a water baffle (8), a pressure plate (9) and a connecting spring (10), the water baffle (8) is provided on the left side of the check member, and one end of the water baffle (8) is connected to the fixing member (6) and is used to close the water hole (7), the pressure plate (9) is provided on the right side of the check member, the water baffle (8) and the pressure plate (9) are connected by a connecting rod, and the pressure plate (9) moves back and forth on the fixing member (6) under the action of water pressure to control the check of the fluid.

2. A ball valve with a check function according to claim 1, characterized in that: The fixing member (6) is provided with a protrusion (11), one end of the connecting spring (10) is connected to the pressure plate (9), and the other end of the connecting spring (10) is connected to the protrusion (11).

3. The ball valve with a check function according to claim 1, characterized in that: The diameter of the fixing member (6) is gradually increased from left to right, and the diameter of the water baffle (8) is larger than the diameter of the front end of the fixing member (6).

4. The ball valve with a check function according to claim 1, characterized in that: Stoppers (12) are provided on both sides of the control switch (4), and the control switch (4) can rotate from 0 to 180 degrees on the valve stem.

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