Filtering ball valve

Abstract

The utility model discloses a filtering ball valve which comprises a valve body, a valve cover installed on the valve body, a ball body arranged in the valve body, a valve rod installed on the valve body and connected with the ball body, an actuator installed on the valve body and connected with the valve rod, and two valve seats arranged on the valve cover, located on the two sides of the ball body respectively and matched with the ball body in a sealing mode. An isolation area is formed in the position, between the two valve seats, in the valve body, a medium channel is formed in the ball body, an operation opening communicated with the isolation area and the outside is formed in the valve body, and a filtering mechanism extending into the medium channel is detachably installed on the operation opening. And the filtering mechanism is used for intercepting and filtering the medium channel and does not interfere with normal rotation of the ball body. The utility model has the following advantages and effects: the filter screen can be conveniently cleaned or replaced, and the pollution to the plant environment is reduced, so that the manual workload is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve, in particular to a filter ball valve. BACKGROUND

[0002] The opening and closing part of the ball valve is driven by the valve rod and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The multi-way ball valve not only can flexibly control the flow, distribution and flow direction switching of the medium on the pipeline, but also can close any channel to connect the other two channels. Ball valves are divided into pneumatic ball valves, electric ball valves and manual ball valves according to the driving mode.

[0003] The application field of ball valves is extremely wide, and the working conditions they face are also complex and variable. In view of different working conditions, the function of the ball valve is also diversified. In response to market demand, ball valves with filtering function have emerged in the market, which can realize the dual functions of fluid control and impurity filtration. The filtering function is mainly realized by the filter screen structure. However, during long-term use, as impurities continuously accumulate on the surface of the filter screen, the filter screen needs to be cleaned or replaced regularly. At present, when replacing the filter screen of the ball valve with filtering function, the pipe controllers at the front and rear ends of the filter structure need to be closed respectively, so that the medium in the section of the pipe with the filter structure remains stationary, and then the replacement operation can be performed. If the distance between the two controllers is too long, it will greatly increase the workload of maintenance operation. When opening the cover of the sealed filter structure, the existing structure will cause a large amount of fluid medium to flow out, thereby polluting the factory environment. In view of the above problems, the present scheme arises at the historic moment. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a filter ball valve which can realize convenient cleaning or replacement of the filter screen and reduce pollution to the factory environment, thereby reducing the workload of manual labor.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a filter ball valve, comprising a valve body, a valve cover installed on the valve body, a ball installed in the valve body, a valve rod installed on the valve body and connected to the ball, an actuator installed on the valve body and connected to the valve rod, two valve seats installed on the valve cover and located on both sides of the ball and forming a sealing fit with the ball, a separation zone formed between the two valve seats in the valve body, a medium channel formed on the ball, an operation port provided on the valve body and communicating with the separation zone and the outside, and a filter mechanism installed on the operation port and extending into the medium channel, the filter mechanism constituting an interception filter for the medium channel and not interfering with the normal rotation of the ball.

[0006] By adopting the technical scheme, the fluid medium is intercepted and filtered by the filter mechanism arranged in the medium channel. When the filter mechanism needs to be replaced or cleaned, the control valve is in a closed state, and the cooperation of the ball and the two valve seats forms a barrier between the medium channel and the fluid medium in the pipeline. Then, the filter mechanism can be replaced or cleaned by disassembling the filter mechanism through the operation port, without the need to operate the two pipeline controllers. The structure only has a small amount of fluid medium flowing out of the medium channel during operation, thereby reducing pollution to the factory environment and making the cleaning or replacement operation of the filter screen more convenient and reducing the labor workload.

[0007] Further, the filter mechanism comprises a connecting hole arranged in the ball and communicating the isolation area and the medium channel, and a filter element, and when the filter element is installed in the connecting hole, a sealing structure for isolating the medium channel and the isolation area is formed between the filter element and the connecting hole.

[0008] By adopting the technical scheme, the fluid medium is intercepted and filtered by the filter mechanism arranged in the medium channel. When the filter mechanism needs to be replaced or cleaned, the control valve is in a closed state, and the cooperation of the ball and the two valve seats forms a barrier between the medium channel and the fluid medium in the pipeline. Then, the filter mechanism can be replaced or cleaned by disassembling the filter mechanism through the operation port, without the need to operate the two pipeline controllers. The structure only has a small amount of fluid medium flowing out of the medium channel during operation, thereby reducing pollution to the factory environment and making the cleaning or replacement operation of the filter screen more convenient and reducing the labor workload.

[0009] Further, the connecting hole is coaxially arranged with the valve rod, and a relative sealing rotation is formed between the connecting hole and the filter element.

[0010] By adopting the technical scheme, the filter mechanism arranged in this way does not interfere with the normal rotation of the ball.

[0011] Further, the sealing structure comprises a first sealing ring arranged between the filter element and the connecting hole and a sealing part formed on the filter element.

[0012] By adopting the technical scheme, the first sealing ring cooperates with the sealing part to form a detachable sealing barrier between the medium channel and the isolation area.

[0013] Further, the filter element has a storage cavity with an opening formed thereon, and when the filter element is installed into the ball, the opening of the storage cavity faces the valve seat side and communicates with the medium channel.

[0014] By adopting the technical scheme, the fluid medium enters the storage cavity through the opening and is filtered by the filter element, so that the impurities filtered by the filter element can be stored in the storage cavity, making the cleaning operation more convenient and reducing the probability of impurities flowing back into the fluid medium.

[0015] Further, the filter mechanism further comprises a cover for sealing the operation port, a second sealing ring arranged between the cover and the valve body, and a locking assembly for fixing the cover.

[0016] Through adoption of the technical scheme, the cooperation of the cover, the second sealing ring and the locking assembly realizes the opening and closing sealing of the operation port.

[0017] Further, the locking assembly comprises a plurality of locking bolts, and the locking bolts are threadedly connected with the valve body through the cover.

[0018] Through adoption of the technical scheme, detachable fixing between the cover and the valve body is realized.

[0019] Further, a positioning structure is formed between the filter and the cover, and the positioning structure positions the opening of the storage cavity and the valve seat to be coaxially arranged.

[0020] Through adoption of the technical scheme, when the valve is in the open state, the fluid medium can smoothly enter the storage cavity through the opening via the medium channel, so that the implementation reliability of the setting structure is ensured.

[0021] Further, the ball is provided with an embedding groove for embedding the filter at a position corresponding to the orthographic projection position of the connecting hole.

[0022] Through adoption of the technical scheme, the embedding groove is arranged to reduce the assembly gap formed between the medium channel and the filter, so as to improve the filtering quality.

[0023] Further, the filter is in a barrel shape and has a diameter greater than that of the medium channel.

[0024] Through adoption of the technical scheme, the setting structure reduces the assembly gap formed between the medium channel and the filter, so as to improve the filtering quality.

[0025] In summary, the utility model has the following beneficial effects: the utility model can realize convenient cleaning or replacement of the filter screen and reduce pollution caused to the factory environment, so as to reduce the artificial workload. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of an embodiment;

[0027] Figure 2 It is a structural schematic view of an embodiment; Figure 1 It is an enlarged view of the A part in the middle;

[0028] Figure 3 It is a structural schematic view of the filter in the embodiment.

[0029] In the figure: 1, valve body; 2, valve cover; 3, ball; 4, valve stem; 5, valve seat; 6, isolation area; 7, medium channel; 8, operation port; 9, filtering mechanism; 91, connecting hole; 92, filter; 93, cover; 94, second sealing ring; 95, locking bolt; 10, sealing structure; 101, first sealing ring; 102, sealing part; 11, positioning structure; 111, positioning column; 112, positioning hole; 12, embedding groove; 13, actuator; 14, storage cavity. DETAILED DESCRIPTION

[0030] The utility model will be made further detailed explanation in combination with the drawings.

[0031] Reference Figures 1 to 3 A filtering ball valve, comprising a valve body 1, a valve cover 2 fixedly installed on the valve body 1, a ball 3 arranged in the valve body 1, a valve stem 4 installed on the valve body 1 and connected with the ball 3, an actuator 13 fixedly installed on the valve body 1 and connected with the valve stem 4, and two valve seats 5 arranged on the valve cover 2 and located on both sides of the ball 3 respectively and sealingly matched with the ball 3. An isolation area 6 is formed in the valve body 1 at a position between the two valve seats 5, a medium channel 7 is formed on the ball 3, and an output shaft of the actuator 13 is fixedly connected with the valve stem 4. An operation port 8 is formed on the valve body 1 and communicates the isolation area 6 with the outside, a filtering mechanism 9 extending into the medium channel 7 is detachably installed on the operation port 8, and the filtering mechanism 9 constitutes interception and filtering of the medium channel 7 without interfering with the normal rotation of the ball 3. The actuator 13 is a prior art, and its specific structure and principle will not be described in detail here.

[0032] The filtering mechanism 9 comprises a connecting hole 91 formed on the ball 3 and communicating the isolation area 6 with the medium channel 7 and a filter 92, and when the filter 92 is installed in the connecting hole 91, a sealing structure 10 for isolating the medium channel 7 from the isolation area 6 is formed between the filter 92 and the connecting hole 91. The filter 92 is a cylindrical barrel processed from a filter screen and has a diameter greater than that of the medium channel 7. The connecting hole 91 is coaxially arranged with the valve stem 4, and relative sealing rotation is formed between the connecting hole 91 and the filter 92. The sealing structure 10 comprises a first sealing ring 101 arranged between the filter 92 and the connecting hole 91 and a sealing part 102 fixedly formed on the filter 92, and the first sealing ring 101 is embedded and fixed on the wall of the connecting hole 91.

[0033] The filter 92 is formed with a storage cavity 14 having an opening, and when the filter 92 is installed into the ball 3, the opening of the storage cavity 14 faces the valve seat 5 side and communicates with the medium channel 7. The filtering mechanism 9 further comprises a cover 93 for sealing the operation port 8, a second sealing ring 94 arranged between the cover 93 and the valve body 1, and a locking assembly for fixing the cover 93. The locking assembly comprises a plurality of locking bolts 95, and the locking bolts 95 are threadedly connected with the valve body 1 through the cover 93.

[0034] The positioning structure 11 is formed between the filter piece 92 and the cover 93, and the positioning structure 11 positions the opening of the storage cavity 14 coaxially with the valve seat 5. The positioning structure 11 comprises a positioning column 111 integrally arranged on the cover 93 and a positioning hole 112 provided on the filter piece 92 and for the positioning column 111 to insert, the positioning column 111 is a hexagonal prism and the shape of the positioning hole 112 is matched with the positioning column 11. The embedding groove 12 for the filter piece 92 to embed is provided at the position corresponding to the orthographic projection position of the connecting hole 91 of the ball 3.

[0035] The embodiment is only an interpretation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. A filter ball valve, comprising a valve body (1), a valve cover (2) mounted on the valve body (1), a ball (3) disposed within the valve body (1), a valve stem (4) mounted on the valve body (1) and connected to the ball (3), an actuator (13) mounted on the valve body (1) and connected to the valve stem (4), and two valve seats (5) disposed on the valve cover (2) and respectively located on both sides of the ball (3) and forming a sealing fit with the ball (3), wherein an isolation zone (6) is formed in the valve body (1) between the two valve seats (5), and a medium channel (7) is formed on the ball (3), characterized in that: The valve body (1) is provided with an operation port (8) that connects the isolation zone (6) to the outside. A filter mechanism (9) extending into the medium channel (7) is detachably installed on the operation port (8). The filter mechanism (9) intercepts and filters the medium channel (7) without interfering with the normal rotation of the ball (3).

2. The filter ball valve according to claim 1, characterized in that: The filter mechanism (9) includes a connection hole (91) opened in the sphere (3) and communicating between the isolation zone (6) and the medium channel (7) and a filter element (92). When the filter element (92) is installed in the connection hole (91), a sealing structure (10) for isolating the medium channel (7) and the isolation zone (6) is formed between the filter element (92) and the connection hole (91).

3. The filter ball valve according to claim 2, characterized in that: The connecting hole (91) is coaxially arranged with the valve stem (4), and the connecting hole (91) and the filter element (92) form a relative sealed rotation.

4. The filter ball valve according to claim 3, characterized in that: The sealing structure (10) includes a first sealing ring (101) disposed between the filter element (92) and the connecting hole (91) and a sealing portion (102) formed on the filter element (92).

5. The filter ball valve according to claim 2, characterized in that: The filter element (92) has a storage cavity (14) with an opening. When the filter element (92) is installed into the ball (3), the opening of the storage cavity (14) faces the valve seat (5) and communicates with the medium channel (7).

6. The filter ball valve according to claim 5, characterized in that: The filter mechanism (9) also includes a cover (93) for sealing the operation port (8), a second sealing ring (94) disposed between the cover (93) and the valve body (1), and a locking assembly for fixing the cover (93).

7. The filter ball valve according to claim 6, characterized in that: The locking assembly includes a plurality of locking bolts (95) that pass through the cover (93) and are threadedly connected to the valve body (1).

8. The filter ball valve according to claim 6, characterized in that: A positioning structure (11) is formed between the filter element (92) and the cover (93), and the positioning structure (11) positions the opening of the storage cavity (14) and the valve seat (5) in a coaxial configuration.

9. The filter ball valve according to claim 2, characterized in that: The sphere (3) has a groove (12) for inserting the filter element (92) at the position corresponding to the orthogonal projection of the connecting hole (91).

10. The filter ball valve according to claim 2, characterized in that: The filter element (92) is cylindrical and its diameter is larger than that of the medium channel (7).

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