Three-piece type fire-resistant ball valve convenient to disassemble and assemble

Abstract

The utility model relates to a three-piece fire-resistant ball valve convenient to disassemble and assemble, which is characterized by comprising a valve seat, a channel is arranged in the valve seat, a valve ball is arranged in the channel, the center of the valve seat is rotatably connected with a valve rod, one end of the valve rod is connected with the valve ball, the valve rod is used for driving the valve ball to rotate, and the valve ball is arranged in the channel. A channel is formed in the valve seat to open or close the channel, sealing pieces are embedded in the two ends of the channel respectively, detachable connectors are arranged on the two sides of the valve seat, detachable filter screens are arranged in the connectors, and detachable pipeline connectors are arranged at the ends, away from the valve seat, of the connectors. The filter has the following advantages and effects that the filter screen can be conveniently replaced, so that the convenience of overall disassembly and assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and in particular to a three-piece fire-resistant ball valve which can be easily disassembled and assembled. Background Art

[0002] The three-piece ball valve is a valve that adopts a three-piece structure and is opened and closed by rotating the ball around the center line of the valve body.

[0003] For example, a Chinese patent document with publication number CN220470691U discloses a three-piece ball valve, including a valve body, a liquid inlet end is fixed on the left side of the valve body, a valve stem is vertically arranged inside the top of the valve body and a handle is fixed to the top of the outside of the valve stem, a fixing ring is fixed inside the liquid inlet end, and a connecting port is arranged inside the fixing ring, a mounting ring is arranged on the left side of the fixing ring, and a filter is fixed inside the mounting ring.

[0004] In the above technical solution, the filter net arranged inside the mounting ring can assist in filtering and removing some impurities in the water entering the valve when the valve is opened to transport water, thereby reducing the particulate impurities entering the valve during water transportation and facilitating the auxiliary filtering of impurities in the water entering the valve. However, during long-term use, the filter net will be damaged. Since the filter net is pressed inside the mounting ring, there is a certain inconvenience in replacing the filter net. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a three-piece refractory ball valve that is easy to disassemble and assemble, which can facilitate the replacement of the filter screen to improve the convenience of overall disassembly and assembly.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-piece fire-resistant ball valve that is easy to disassemble and assemble, comprising a valve seat, a channel is provided in the valve seat, a valve ball is provided in the channel, a valve stem is rotatably connected to the center of the valve seat, one end of the valve stem is connected to the valve ball, the valve stem is used to drive the valve ball to rotate to open or close the channel, sealing members are respectively nested at both ends of the channel, detachable connectors are provided on both sides of the valve seat, a detachable filter screen is provided in the connector, and a detachable pipe joint is provided at the end of the connector away from the valve seat.

[0007] The utility model is further configured as follows: a first connecting flange is provided on the valve seat, the first connecting flange is multiple and evenly distributed around the circumference, a second connecting flange opposite to the first connecting flange is provided on the connecting head, the first connecting flange and the second connecting flange are both provided with penetrating connecting holes, and the first connecting flange and the second connecting flange are connected by a screw nut.

[0008] The utility model is further configured as follows: a concave guide groove is provided on the inner wall of the connector, a protruding guide block is provided on the outer periphery of the filter screen, the guide block is opposite to the guide groove, and a sliding fit can be formed between the two.

[0009] The utility model is further configured as follows: an outer wall of one end of the connector far away from the valve seat is provided with an external thread, and an inner wall of the pipe joint is provided with an internal thread that can form a thread match with the external thread.

[0010] The utility model is further configured as follows: a protruding annular abutment flange is provided on the inner wall of the pipe joint, a placement groove is provided on the annular abutment flange, a sealing ring is provided in the placement groove, and the sealing ring is used to be squeezed between the annular abutment flange and the connector port to form a sealing fit between the pipe joint and the connector.

[0011] The utility model is further configured as follows: a pressing rod extending toward the filter screen is provided on the annular abutting flange, and the pressing rod is used to press on the filter screen to limit the filter screen.

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

[0013] Since the valve seat and the connector are detachably connected, when the filter needs to be replaced, the connector can be removed, which is convenient for workers to operate, thereby facilitating the installation of the filter into the connector or removing the filter from the connector. Therefore, the technical problem in the prior art that the filter is pressed inside the valve, making it inconvenient to replace the filter, is effectively solved, thereby improving the convenience of overall disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the specific structure of the pipe joint in the utility model. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] like Figures 1 to 3 As shown, the utility model discloses a three-piece fire-resistant ball valve which is convenient for disassembly and assembly, comprising a valve seat 1, a channel 101 being arranged in the valve seat 1, a valve ball 2 being arranged in the channel 101, a valve stem 3 being rotatably connected to the center of the valve seat 1, one end of the valve stem 3 being connected to the valve ball 2, the valve stem 3 being used to drive the valve ball 2 to rotate so as to realize opening or closing of the channel 101, sealing members 4 being nested at both ends of the channel 101, a detachable connector 5 being arranged on both sides of the valve seat 1, a detachable filter screen 6 being arranged in the connector 5, a detachable pipe joint 7 being arranged at the end of the connector 5 which is located away from the valve seat 1, when the filter screen 6 needs to be replaced, the connector 5 can be removed, so as to facilitate the operation of the workers, thereby facilitating the installation of the filter screen 6 into the connector 5 or the removal of the filter screen 6 from the connector 5, thereby improving the convenience of overall disassembly and assembly, in addition, the ball valve is made of 304 stainless steel as a whole, so the ball valve as a whole has excellent fire resistance and rust resistance.

[0020] In this embodiment, the detachable connection structure between the connecting head 5 and the valve seat 1 is as follows: a first connecting flange 102 is provided on the valve seat 1, and the first connecting flange 102 is multiple and evenly distributed around the circumference; a second connecting flange 51 opposite to the first connecting flange 102 is provided on the connecting head 5, and the first connecting flange 102 and the second connecting flange 51 are both provided with penetrating connecting holes, and the first connecting flange 102 and the second connecting flange 51 are connected by a screw 200 and a nut 300. Therefore, after the second connecting flange 51 on the connecting head 5 is aligned with the first connecting flange 102 on the valve seat 1, the connection between the connecting head 5 and the valve seat 1 can be achieved by inserting the screw 200 into the connecting holes of the first connecting flange 102 and the second connecting flange 51, and then screwing the nut 300 onto the screw 200.

[0021] In this embodiment, a recessed guide groove 52 is further provided on the inner wall of the connector 5, and a protruding guide block 61 is provided on the outer periphery of the filter screen 6. The guide block 61 is opposite to the guide groove 52 and can form a sliding fit between the two. When the filter screen 6 is installed into the connector 5, the guide block 61 is first aligned with the guide groove 52, and then the filter screen 6 is pushed and the friction generated between the guide block 61 and the guide groove 52 can complete the fixing of the filter screen 6.

[0022] In this embodiment, the pipe joint 7 is used to connect the pipe. The detachable connection structure between the pipe joint 7 and the connecting head 5 is as follows: an external thread 53 is provided on the outer wall of the end of the connecting head 5 away from the valve seat 1, and an internal thread that can be threadedly matched with the external thread 53 is provided on the inner wall of the pipe joint 7. Therefore, by rotating the pipe joint 7, the pipe joint 7 and the connecting head 5 can be disassembled and assembled, and a thread seal can be formed by the threaded match between the external thread 53 and the internal thread, thereby avoiding leakage at the junction of the pipe joint 7 and the connecting head 5.

[0023] In this embodiment, a protruding annular abutting flange 71 is further provided on the inner wall of the pipe joint 7, and a placement groove is provided on the annular abutting flange 71, and a sealing ring 72 is provided in the placement groove. After the pipe joint 7 is tightened on the connector 5, the sealing ring 72 in the placement groove can be pressed between the annular abutting flange 71 and the port of the connector 5, thereby forming a sealing fit between the pipe joint 7 and the connector 5, thereby further preventing leakage at the junction of the pipe joint 7 and the connector 5.

[0024] In this embodiment, a push rod 73 extending toward the filter screen 6 is further provided on the annular abutment flange 71. The push rod 73 is used to press on the filter screen 6 to limit the filter screen 6. After the pipe joint 7 is tightened on the connecting head 5, the push rod 73 can press on the filter screen 6 to limit the filter screen 6, thereby further ensuring the stability of the filter screen 6 when installed on the connecting head 5.

[0025] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A three-piece fire-resistant ball valve that is easy to disassemble and assemble, characterized in that: It includes a valve seat, a channel is provided in the valve seat, a valve ball is provided in the channel, a valve stem is rotatably connected to the center of the valve seat, one end of the valve stem is connected to the valve ball, the valve stem is used to drive the valve ball to rotate to open or close the channel, sealing members are respectively nested at both ends of the channel, detachable connectors are provided on both sides of the valve seat, a detachable filter screen is provided in the connector, and a detachable pipe joint is provided at the end of the connector away from the valve seat.

2. The three-piece refractory ball valve that can be easily disassembled and assembled according to claim 1 is characterized in that: The valve seat is provided with a first connecting flange, which is multiple and evenly distributed around the circumference. The connecting head is provided with a second connecting flange opposite to the first connecting flange. The first connecting flange and the second connecting flange are both provided with penetrating connecting holes, and the first connecting flange and the second connecting flange are connected by a screw nut.

3. A three-piece fire-resistant ball valve that is easy to disassemble and assemble according to claim 1 or 2, characterized in that: The inner wall of the connector is provided with a recessed guide groove, and the outer periphery of the filter screen is provided with a protruding guide block, the guide block is opposite to the guide groove, and a sliding fit can be formed between the two.

4. The three-piece refractory ball valve that can be easily disassembled and assembled according to claim 3 is characterized in that: The outer wall of the connector at one end away from the valve seat is provided with an external thread, and the inner wall of the pipe joint is provided with an internal thread that can form a thread match with the external thread.

5. The three-piece fire-resistant ball valve that can be easily disassembled and assembled according to claim 4 is characterized in that: The inner wall of the pipe joint is provided with a protruding annular abutment flange, the annular abutment flange is provided with a placement groove, a sealing ring is provided in the placement groove, and the sealing ring is used to be squeezed between the annular abutment flange and the connector port to form a sealing fit between the pipe joint and the connector.

6. The three-piece fire-resistant ball valve that can be easily disassembled and assembled according to claim 5, characterized in that: The annular abutting flange is provided with a pressing rod extending toward the filter screen, and the pressing rod is used to press on the filter screen to limit the filter screen.

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