High-precision flow-adjusting pneumatic butterfly valve

Abstract

The high-precision flow adjusting pneumatic butterfly valve is simple in structure and capable of adjusting flow and comprises a valve body, a water inlet channel and a water outlet channel, the water inlet channel and the water outlet channel are formed in the valve body, a flow adjusting seat is arranged in the water inlet channel, a flow adjusting channel is formed in the flow adjusting seat, a flow adjusting cylinder is arranged on the flow adjusting seat in a sliding mode, the flow adjusting cylinder abuts against the inner wall of the flow adjusting channel, and the flow adjusting channel is communicated with the flow adjusting seat. A plurality of strip-shaped water outlet grooves penetrating through the flow adjusting cylinder are formed in the flow adjusting cylinder from top to bottom, the strip-shaped water outlet grooves are evenly distributed around the flow adjusting cylinder, and a lifting sliding device driving the flow adjusting cylinder to slide in a lifting mode is arranged on the valve body.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a high-precision flow-regulating pneumatic butterfly valve. Background Technology

[0002] A pneumatic butterfly valve consists of a pneumatic actuator and a butterfly valve. It uses a circular disc that rotates with the valve stem to open and close, achieving the desired action. Primarily used as a shut-off valve, it can also be designed to have regulating or combined shut-off and regulating functions. Butterfly valves are increasingly used in low-pressure, large- and medium-diameter pipelines. Pneumatic butterfly valves are classified as: stainless steel pneumatic butterfly valves, hard-seal pneumatic butterfly valves, soft-seal pneumatic butterfly valves, and carbon steel pneumatic butterfly valves. While pneumatic butterfly valves offer high precision, their functionality is limited, whereas pipeline systems typically have diverse functions and frequently require flow regulation, making them unsuitable for many applications.

[0003] To address this problem, this utility model was developed. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model proposes a high-precision flow-regulating pneumatic butterfly valve with a simple structure and the ability to regulate flow.

[0005] To solve the above-mentioned technical problems, the solution adopted by this utility model is as follows: a high-precision flow-regulating pneumatic butterfly valve, including a valve body, an inlet channel and an outlet channel opened on the valve body, an flow-regulating seat provided in the inlet channel, a flow-regulating channel opened on the flow-regulating seat, a flow-regulating cylinder slidably arranged on the flow-regulating seat, the flow-regulating cylinder abutting against the inner wall of the flow-regulating channel, a plurality of strip-shaped water outlet grooves penetrating the flow-regulating cylinder are opened from top to bottom on the flow-regulating cylinder, the strip-shaped water outlet grooves are evenly distributed around the flow-regulating cylinder, and a lifting and sliding device is provided on the valve body to drive the flow-regulating cylinder to rise and slide.

[0006] A further improvement is that the lifting and sliding device includes a lifting rod, one end of which is fixedly connected to the upper end of the flow regulating cylinder. The valve body is provided with a lifting seat, and the lifting seat has a lifting channel. The lifting rod slides through the lifting channel, and the lifting seat is provided with a sliding device that drives the lifting rod to slide.

[0007] A further improvement is that the sliding device includes a screw, which is rotatably mounted on the lifting seat. One end of the screw is located in the lifting channel, and the other end of the screw is provided with a driving component. The lifting rod is mounted on the screw and is threadedly driven by the screw. The lifting rod is square in shape, and the lifting channel is configured to match the lifting rod.

[0008] A further improvement is that the flow regulating seat is equipped with a filter device to prevent the flow regulating cylinder from becoming clogged.

[0009] A further improvement is that the filtration device includes a filter frame that matches the shape of the flow regulating channel, the filter frame contains a filter screen, and the filter frame is located at the water inlet end of the flow regulating channel.

[0010] A further improvement is that a water-resistant hammer device is provided between the filter frame and the flow regulating seat.

[0011] A further improvement is that the waterproof hammer device includes symmetrically arranged sliding blocks, which are located at the outer end of the sliding frame. The flow regulating seat has a sliding channel, and the sliding blocks are located inside the sliding channel. A damping device is provided inside the sliding channel.

[0012] A further improvement is that the damping device is a spring, one end of which is connected to the sliding block, and the other end of which is connected to the inner wall of the upper end of the sliding channel.

[0013] A further improvement is that it also includes a friction layer, which is disposed on the side wall of the sliding channel, and the sliding block abuts against the friction layer.

[0014] A further improvement is that the driving component is a servo motor.

[0015] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0016] 1. Simple structure and flow regulation capability. The flow regulation cylinder enables flow regulation, giving the butterfly valve a flow regulation function, thus making it better suited to pipeline connection requirements.

[0017] 2. Butterfly valves can adjust the flow, eliminating the need to install flow adjustment equipment in pipeline connections, which facilitates installation by staff, improves installation efficiency, and reduces operating costs. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of the high-precision flow-regulating pneumatic butterfly valve according to an embodiment of this utility model.

[0019] Figure 2 This is an enlarged structural schematic diagram of embodiment A of this utility model. Detailed Implementation

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to Figure 1-2The present invention discloses a high-precision flow-regulating pneumatic butterfly valve, comprising a valve body 1, an inlet channel 2 and an outlet channel formed on the valve body 1, wherein a flow-regulating seat 3 is provided in the inlet channel 2, the flow-regulating seat 3 has a flow-regulating channel formed on it, a flow-regulating cylinder 8 is slidably provided on the flow-regulating seat 3, the flow-regulating cylinder 8 abuts against the inner wall of the flow-regulating channel, a plurality of strip-shaped water outlet grooves 9 are formed from top to bottom on the flow-regulating cylinder 8, the strip-shaped water outlet grooves 9 are evenly distributed around the flow-regulating cylinder 8, and there is a gap between each water outlet groove, a lifting rod 4 is fixedly connected to the upper end of the flow-regulating cylinder 8, a lifting seat 5 is provided on the valve body 1, the lifting seat 5 has a lifting channel 7 formed on it, the lifting rod 4 is slidably inserted in the lifting channel 7, and a sliding device is provided on the lifting seat 5 to drive the lifting rod 4 to slide.

[0022] Specifically, the sliding device includes a screw 6, which is rotatably mounted on the lifting seat 5. One end of the screw 6 is located in the lifting channel 7, and the other end of the screw 6 is equipped with a servo motor, which is mounted on the lifting seat 5. The lifting rod 4 is threaded through the screw 6 and is driven by the screw 6. The lifting rod 4 is square in shape, and the lifting channel 7 is configured to match the lifting rod 4.

[0023] When the butterfly valve is in use and flow regulation is required, the servo motor rotates, driving the screw 6 to rotate. The screw 6 and the sliding rod are driven by a thread, causing the sliding rod to slide into the lifting channel 7, thereby driving the flow regulating cylinder 8 to rise. After the flow regulating cylinder 8 rises, the water outlet tanks are gradually exposed one by one, and water flows out from the outlet. When more water outlet tanks are exposed, the water flow is greater, and vice versa, thus realizing the flow regulation function of the butterfly valve, enabling the butterfly valve to regulate flow.

[0024] To prevent clogging of the water outlet and impurities from entering the regulating cylinder 8 and valve body 1, a filter frame 11 is included, designed to match the shape of the regulating channel. The filter frame 11 contains a filter screen 10 and is located at the water inlet end of the regulating channel. The filter screen 10 filters impurities, preventing them from entering the regulating cylinder 8 or its interior, thus preventing clogging of the water outlet and facilitating long-term use. Furthermore, the absence of impurities in the regulating cylinder 8 and valve body 1 prevents wear on the regulating cylinder 8 and disc, further extending their service life.

[0025] To prevent water hammer from impacting the filter screen 10, symmetrically arranged sliding blocks 12 are included. The sliding blocks 12 are located at the outer end of the sliding frame. A sliding channel 15 is provided on the flow regulating seat 3, and the sliding blocks 12 are disposed within the sliding channel 15. A spring 14 is installed within the sliding channel 15, with one end connected to the sliding block 12 and the other end connected to the upper inner wall of the sliding channel 15. When water hammer impacts the filter screen 10, the filter screen 10 slides within the sliding channel 15, compressing the spring 14. The spring 14 buffers the impact force, thereby reducing the adverse effects of water hammer impact on the filter screen 10. Simultaneously, preventing water hammer from impacting the flow regulating cylinder 8 helps extend the service life of the flow regulating cylinder 8.

[0026] In order to further reduce the water hammer effect, a friction layer 13 is also included. The friction layer 13 is disposed on the side wall of the sliding channel 15, and the sliding block 12 abuts against the friction layer 13.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A high-precision flow-regulating pneumatic butterfly valve, comprising a valve body, a water inlet channel and a water outlet channel formed in the valve body, characterized in that: The water inlet channel is provided with a flow adjusting seat, the flow adjusting seat is provided with a flow adjusting channel, the flow adjusting seat is slidably provided with a flow adjusting cylinder, the flow adjusting cylinder is in abutment with the inner wall of the flow adjusting channel, a plurality of strip-shaped water outlet grooves penetrating through the flow adjusting cylinder are formed on the flow adjusting cylinder from top to bottom, the strip-shaped water outlet grooves are uniformly arranged around the flow adjusting cylinder, and the valve body is provided with a lifting and sliding device for driving the flow adjusting cylinder to lift and slide.

2. The high-precision flow-regulating pneumatic butterfly valve according to claim 1, characterized in that: The lifting and sliding device comprises a lifting rod, one end of the lifting rod is fixedly connected with the upper end of the flow adjusting cylinder, the valve body is provided with a lifting seat, the lifting seat is provided with a lifting channel, the lifting rod is slidably arranged in the lifting channel, and the lifting seat is provided with a sliding device for driving the lifting rod to slide.

3. The high-precision flow-regulating pneumatic butterfly valve according to claim 2, characterized in that: The sliding device comprises a screw rod, the screw rod is rotatably arranged on the lifting seat, one end of the screw rod is located in the lifting channel, the other end of the screw rod is provided with a driving member, the lifting rod is threadedly connected with the screw rod, the lifting rod is in square shape, and the lifting channel is matched with the lifting rod.

4. The high-precision flow-regulating pneumatic butterfly valve according to claim 1, characterized in that: The flow adjusting seat is provided with a filtering device for preventing the flow adjusting cylinder from being blocked.

5. The high-precision flow-regulating pneumatic butterfly valve according to claim 4, characterized in that: The filtering device comprises a filtering frame matched with the shape of the flow adjusting channel, the filtering frame is provided with a filtering screen, and the filtering frame is arranged at the water inlet end of the flow adjusting channel.

6. The high-precision flow-regulating pneumatic butterfly valve according to claim 5, characterized in that: A waterproof hammer device is arranged between the filtering frame and the flow adjusting seat.

7. The high-precision flow-regulating pneumatic butterfly valve according to claim 6, characterized in that: The waterproof hammer device comprises symmetrically arranged sliding blocks, the sliding blocks are arranged at the outer end of the sliding frame, the flow adjusting seat is provided with a sliding channel, the sliding blocks are arranged in the sliding channel, and the sliding channel is provided with a damping device.

8. The high-precision flow-regulating pneumatic butterfly valve according to claim 7, characterized in that: The damping device is a spring, one end of the spring is connected with the sliding block, and the other end of the spring is connected with the inner wall of the upper end of the sliding channel.

9. The high-precision flow-regulating pneumatic butterfly valve according to claim 7, characterized in that: A friction layer is further arranged, the friction layer is arranged on the side wall of the sliding channel, and the sliding block is in abutment with the friction layer.

10. The high-precision flow-regulating pneumatic butterfly valve according to claim 3, characterized in that: The driving member is a servo motor.

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