Emptying valve of front pre-filtering mechanism

Abstract

The utility model discloses an emptying valve of a front pre-filtering mechanism, which relates to the technical field of emptying valves and comprises a valve body, filtering seats are arranged on two sides of the valve body, filtering frames are movably connected to the inner walls of the filtering seats, and filtering screens are arranged on the inner sides of the filtering frames. According to the emptying valve, the filter frame is arranged on the inner side of the filter seat, the rotating shaft seat is arranged in front of the filter frame and located on the inner side of the filter seat, when the rotating shaft seat rotates in the filter seat through input and output of media, filtering is conducted through the filter seat, and the surface of a filter screen is cleaned through cleaning fan blades at the four ends of the rotating shaft seat; the number of the cleaning fan blades is four, one ends of the inner walls of two of the cleaning fan blades are provided with top blocks, and the top blocks are attached to convex blocks at the front end of the filter frame, so that in the cleaning process of the cleaning fan blades, the cleaning fan blades collide with the convex blocks through the top blocks, and the filter frame vibrates in the filter seat; therefore, dirt cleaned by the cleaning fan blades is shaken out of the inner side of the filter frame through vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of vent valves, in particular to a vent valve with a pre-filtering mechanism. Background Art

[0002] The throttling, shut-off and venting valve is a throttling, shut-off and venting valve, which is widely used as a closed-circuit device on pipelines of petroleum, natural gas, coal gas, liquefied petroleum gas, oil refining, airports, oil and gas storage and transportation, etc.

[0003] For example, patent No. CN201920782814.3 discloses a throttling stop vent valve, including a circulation pipe, a clearing ring, an operating body, a screw and a wrench ring. The clearing ring is provided in two groups and is respectively fixedly welded to the two ends of the circulation pipe. A rotating groove is opened inside the operating body. The screw is arranged in the rotating groove, and its top wall extends out of the rotating groove and faces the side away from the circulation pipe. The top wall of the screw is fixedly welded to the wrench ring. An outer steel ring, an inner steel ring and a rock wool sleeve are provided on the outer side of the circulation pipe. A vacuum layer is provided between the outer steel ring and the inner steel ring, and the inner wall of the rock wool sleeve is fixedly bonded to the outer wall of the inner steel ring. The utility model provides a vacuum layer and a rock wool sleeve, both of which can slow down the heat transfer, so they can slow down the heat loss when the temperature is low, and prevent ice from forming; the first cover plate, the storage tank and the activated carbon are provided, and the storage tank is communicated with the rotating tank, so the activated carbon can absorb the odor overflowing from the rotating tank, and prevent the odor in the circulation pipe from being emitted to the external environment through the rotating tank; the oil delivery hole is communicated with the rotating tank, so lubricating oil can be added into the rotating tank through the oil delivery hole, so that the lubricating oil drips between the screw rod and the valve core, and rust between the screw rod and the valve core is prevented;

[0004] The vent valve in this patent is generally located at the end of the pipeline, so it is easy to accumulate impurities, which can easily corrode the pipeline and affect the output of subsequent media. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a vent valve with a pre-filtering mechanism, which solves the problem that the vent valve is generally located at the end of a pipeline, so it is easy to accumulate impurities, and these impurities are easy to corrode the pipeline and affect the output of subsequent media.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a vent valve of a pre-filter mechanism, comprising a valve body, filter seats are provided on both sides of the valve body, a filter frame is movably connected to the inner wall of the filter seat, a filter screen is provided on the inner side of the filter frame, a rotating shaft seat is provided in front of the filter frame and located inside the filter seat, cleaning blades are provided at the four ends of the rotating shaft seat, a cleaning brush is provided at the bottom end of the inner wall of the cleaning blade, and the bottom end of the cleaning brush is in contact with the front end surface of the filter screen.

[0007] Preferably, the rear end of the filter seat is located outside the valve body and is provided with an external thread, the outer side of the valve body is located inside the filter seat and is provided with an internal thread, and the valve body and the filter seat are connected by threads.

[0008] Preferably, a connecting seat is provided on the inner side of the filter seat at the opposite surface of the rotating shaft seat and the filter frame, and a rotating shaft is provided at the rear end of the rotating shaft seat, and one end of the rotating shaft extends to the inner side of the connecting seat.

[0009] Preferably, four cleaning blades are provided, wherein one end of the inner wall of two of the cleaning blades is provided with a top block, and a protrusion is provided on the front end surface of the filter frame behind the top block.

[0010] Preferably, the facing surfaces of the top block and the convex block are both inclined surfaces, and the top block and the convex block are fitted together via the inclined surfaces.

[0011] Preferably, a movable groove is provided on the inner side of the filter seat at the rear of the filter frame, the bottom end of the filter frame is inserted into the inner side of the movable groove, a spring is provided on the inner side of the movable groove, the movable groove and the spring are fixedly connected by bolts, and the filter frame is movably connected to the filter seat through the spring.

[0012] Preferably, the filter screen and the bottom end of the cleaning brush are both woven from stainless steel wire. Beneficial Effects

[0013] The utility model provides a vent valve. Compared with the prior art, it has the following beneficial effects:

[0014] A filter frame is provided on the inner side of the filter seat, and a rotating shaft seat is provided on the inner side of the filter seat in front of the filter frame. The rotating shaft seat rotates inside the filter seat through the input and output of the medium, so that while filtering through the filter seat, the cleaning blades at the four ends of the rotating shaft seat clean the surface of the filter screen. Since there are four cleaning blades, one end of the inner wall of two of the cleaning blades is provided with a top block, and a protrusion is provided on the front end surface of the filter frame behind the top block. The opposite surfaces of the top block and the protrusion are both inclined surfaces, and the top block and the protrusion are fitted together through the inclined surfaces, so that during the cleaning process of the cleaning blades, the cleaning blades hit the protrusion at the front end of the filter frame through the top block, causing the filter frame to vibrate inside the filter seat, thereby shaking the dirt cleaned by the cleaning blades out of the inner side of the filter frame through the vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the filter seat of the utility model;

[0017] Figure 3 It is a side view structural diagram of the filter seat of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the connection between the filter frame and the filter seat of the utility model.

[0019] In the figure: 1, valve body; 2, filter seat; 201, connecting seat; 202, movable groove; 3, filter frame; 4, filter screen; 5, shaft seat; 6, cleaning fan blade; 601, top block; 7, cleaning brush; 8, spring; 9, bump. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a vent valve with a pre-filtering mechanism, comprising a valve body 1, filter seats 2 are arranged on both sides of the valve body 1, the rear end of the filter seat 2 is located on the outside of the valve body 1 and is provided with an external thread, the outside of the valve body 1 is located on the inside of the filter seat 2 and is provided with an internal thread, the valve body 1 and the filter seat 2 are connected by threads, thereby facilitating the connection of the valve body 1 and the filter seat 2;

[0022] The inner wall of the filter seat 2 is movably connected with a filter frame 3, and a movable groove 202 is provided on the inner side of the filter seat 2 behind the filter frame 3, and the bottom end of the filter frame 3 is inserted into the inner side of the movable groove 202. A spring 8 is provided on the inner side of the movable groove 202, and the movable groove 202 is fixedly connected with the spring 8 by bolts. The filter frame 3 is movably connected with the filter seat 2 by the spring 8, so that the filter frame 3 can be repeatedly displaced on the filter seat 2;

[0023] A filter screen 4 is provided on the inner side of the filter frame 3, a rotating shaft seat 5 is provided on the inner side of the filter seat 2 in front of the filter frame 3, a connecting seat 201 is provided on the inner side of the filter seat 2 on the opposite side of the rotating shaft seat 5 and the filter frame 3, a rotating shaft is provided on the rear end of the rotating shaft seat 5, one end of the rotating shaft extends to the inner side of the connecting seat 201, cleaning blades 6 are provided on the four ends of the rotating shaft seat 5, and four cleaning blades 6 are provided, two of which are provided with a top block 601 at one end of the inner wall of the cleaning blade 6, a protrusion 9 is provided on the front end surface of the filter frame 3 behind the top block 601, the opposite surfaces of the top block 601 and the protrusion 9 are both inclined surfaces, and the top block 601 and the protrusion 9 are fitted together through the inclined surface, a cleaning brush 7 is provided on the bottom end of the inner wall of the cleaning blade 6, the bottom end of the cleaning brush 7 is fitted with the front end surface of the filter screen 4, and the bottom end of the filter screen 4 and the cleaning brush 7 They are all made of stainless steel wire, and then when the rotating shaft seat 5 rotates inside the filter seat 2 through the input and output of the medium, the cleaning blades 6 at the four ends of the rotating shaft seat 5 clean the surface of the filter screen 4, and because there are four cleaning blades 6, one end of the inner wall of two of the cleaning blades 6 is provided with a top block 601, and the front end surface of the filter frame 3 behind the top block 601 is provided with a protrusion 9, and the opposite surfaces of the top block 601 and the protrusion 9 are both inclined surfaces, and the top block 601 and the protrusion 9 are fitted together through the inclined surface, so that during the cleaning process of the cleaning blades 6, the cleaning blades 6 hit the protrusion 9 at the front end of the filter frame 3 through the top block 601, so that the filter frame 3 vibrates inside the filter seat 2, so that the dirt cleaned by the cleaning blades 6 is shaken out of the inner side of the filter frame 3 through the vibration.

[0024] During operation, the filter seat 2 is first installed on both sides of the valve body 1, and then other equipment is connected to the filter seat 2. A filter frame 3 is provided on the inner side of the filter seat 2, and a rotating shaft seat 5 is provided on the inner side of the filter seat 2 in front of the filter frame 3. The rotating shaft seat 5 rotates inside the filter seat 2 through the input and output of the medium, thereby filtering the filter frame 3. At the same time, the cleaning blades 6 at the four ends of the rotating shaft seat 5 clean the surface of the filter screen 4, and since there are four cleaning blades 6, two of which are cleaning blades, the cleaning blades 6 are provided on the inner side of the filter seat 2. A top block 601 is provided at one end of the inner wall of the cleaning fan blade 6, and a protrusion 9 is provided on the front end surface of the filter frame 3 behind the top block 601. The opposite surfaces of the top block 601 and the protrusion 9 are both inclined surfaces, and the top block 601 and the protrusion 9 are fitted together through the inclined surfaces, so that during the cleaning process of the cleaning fan blade 6, the cleaning fan blade 6 hits the protrusion 9 at the front end of the filter frame 3 through the top block 601, causing the filter frame 3 to vibrate inside the filter seat 2, thereby shaking out the dirt cleaned by the cleaning fan blade 6 from the inside of the filter frame 3 through vibration.

[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A vent valve of a pre-filter mechanism, comprising a valve body (1), characterized in that: A filter seat (2) is provided on both sides of the valve body (1); a filter frame (3) is movably connected to the inner wall of the filter seat (2); a filter screen (4) is provided on the inner side of the filter frame (3); a rotating shaft seat (5) is provided on the inner side of the filter seat (2) in front of the filter frame (3); cleaning blades (6) are provided at the four ends of the rotating shaft seat (5); a cleaning brush (7) is provided at the bottom end of the inner wall of the cleaning blade (6); and the bottom end of the cleaning brush (7) is in contact with the front end surface of the filter screen (4).

2. The vent valve of the pre-filter mechanism according to claim 1, characterized in that: The rear end of the filter seat (2) is located on the outside of the valve body (1) and is provided with an external thread, and the outer side of the valve body (1) is located on the inside of the filter seat (2) and is provided with an internal thread, and the valve body (1) and the filter seat (2) are connected via threads.

3. The vent valve of the pre-filter mechanism according to claim 1, characterized in that: A connecting seat (201) is provided on the inner side of the filter seat (2) at the surface opposite to the rotating shaft seat (5) and the filter frame (3), and a rotating shaft is provided at the rear end of the rotating shaft seat (5), with one end of the rotating shaft extending to the inner side of the connecting seat (201).

4. The vent valve of the pre-filter mechanism according to claim 1, characterized in that: Four cleaning blades (6) are provided, and one end of the inner wall of two of the cleaning blades (6) is provided with a top block (601), and a protrusion (9) is provided on the front end surface of the filter frame (3) behind the top block (601).

5. The vent valve of the pre-filter mechanism according to claim 4, characterized in that: The opposing surfaces of the top block (601) and the convex block (9) are both inclined surfaces, and the top block (601) and the convex block (9) are fitted together via the inclined surfaces.

6. The vent valve of the pre-filter mechanism according to claim 1, characterized in that: A movable groove (202) is provided on the inner side of the filter seat (2) at the rear of the filter frame (3); the bottom end of the filter frame (3) is plugged into the inner side of the movable groove (202); a spring (8) is provided on the inner side of the movable groove (202); the movable groove (202) and the spring (8) are fixedly connected by bolts; the filter frame (3) is movably connected to the filter seat (2) via the spring (8).

7. The vent valve of the pre-filter mechanism according to claim 1, characterized in that: The bottom ends of the filter screen (4) and the cleaning brush (7) are both woven from stainless steel wire.

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