Shock proof surge control valve

Abstract

The utility model discloses a kind of shock surge control valve, it is related to regulating valve technical field;And the utility model includes regulating valve body, the inside of regulating valve body is provided with valve cavity, the inside of regulating valve body is equipped with stabilizing mechanism, for the stability of the valve stem when blocking airflow is promoted, while the outside of regulating valve body is equipped with secondary connecting mechanism, so that regulating valve body and pipeline are secondarily connected, further promote its stability;Stabilizing mechanism includes the valve stem that passes through the top of regulating valve body;When the valve stem is driven by hydraulic cylinder and drops, its end enters the limit in stabilizing groove, simultaneously drives lifting plate and movable rod to descend synchronously in this application by stabilizing mechanism, with the radial constraint of stabilizing groove to valve stem, valve stem shaking caused by airflow impact can be effectively avoided, vibration superposition is prevented to form surge;And reset spring drives lifting plate reset after the valve stem rises, guarantee structure stable operation, significantly improve the ability of regulating valve anti-shock surge.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically to an anti-vibration surge regulating valve. Background Technology

[0002] Control valves are core actuators in industrial process control that adjust fluid medium parameters by receiving control signals. Based on the patent search and the shortcomings of existing technologies, the following was found: In the prior art, when the valve stem inside the valve body is regulating or blocking the fluid, it is prone to radial swaying due to the impact of airflow. The existing structure does not have a dedicated rigid limiting and guiding structure for the valve stem, which cannot suppress the swaying tendency of the valve stem from the source. As a result, the swaying is easily superimposed on external vibrations after being transmitted through the valve body, forming surge. Utility Model Content

[0003] To address the problem of radial swaying caused by airflow impact when the valve stem inside the valve body regulates or blocks fluid flow, the purpose of this invention is to provide an anti-vibration surge regulating valve.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a shock-proof regulating valve, including a regulating valve body, a valve cavity is provided inside the regulating valve body, a stabilizing mechanism is provided inside the regulating valve body to improve the stability of the valve stem when blocking airflow, and a secondary connection mechanism is provided on the outside of the regulating valve body to make a secondary connection between the regulating valve body and the pipeline, thereby further improving its stability. The stabilizing mechanism includes a valve stem that runs through the top of the regulating valve body, a stabilizing groove at the bottom of the regulating valve body, a hollow rod fixedly installed on the lower surface of the inner wall of the stabilizing groove, a return spring fixedly installed inside the hollow rod, a movable rod that is movably engaged inside the hollow rod, the movable rod and the return spring being fixedly connected, and a lifting plate fixedly installed at the top of the movable rod, the lifting plate and the valve stem working together.

[0005] Preferably, the secondary connection mechanism includes two first connecting rings fixedly connected to the regulating valve body. The outer sides of the two first connecting rings are threaded with symmetrically distributed fixing screws. The other end of the fixing screws is threaded with a second connecting ring, and one end of each of the fixing screws is threaded with a nut.

[0006] Preferably, a plug rod is fixedly installed on the lower surface of the inner wall of the hollow rod. The plug rod is located in the middle of the return spring. A slot is opened inside the movable rod, and the top of the plug rod is movably locked in the slot.

[0007] Preferably, a hydraulic cylinder is fixedly installed at the top of the regulating valve body, and the output end of the hydraulic cylinder is fixedly connected to the valve stem.

[0008] Preferably, symmetrically distributed limiting blocks are fixedly installed on the outer side of the lifting plate, and symmetrically distributed limiting grooves are opened inside the stabilizing groove, with the two limiting blocks respectively movably locked in the corresponding limiting grooves.

[0009] Preferably, the lifting plates are arranged in an arc shape to improve the stability of airflow.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This application utilizes a stabilizing mechanism. When the valve stem descends under the drive of a hydraulic cylinder, its end enters the stabilizing groove and is limited. Simultaneously, it drives the lifting plate and the movable rod to move downwards in sync. By using the radial constraint of the valve stem by the stabilizing groove, the valve stem swaying caused by airflow impact can be effectively avoided, preventing the superposition of vibrations from causing surge. Furthermore, the return spring drives the lifting plate to return to its original position after the valve stem rises, ensuring stable operation of the structure and significantly improving the anti-vibration surge capability of the regulating valve. 2. This application uses a secondary connection mechanism to enhance the tightness of the connection between the control valve body and the pipeline by utilizing the dual constraints of "flange main fixing" and "first connecting ring and second connecting ring auxiliary reinforcement". This reduces the relative displacement between the two caused by vibration and avoids the transmission of additional vibration caused by loose connection to the valve stem, thereby helping to suppress surge phenomenon and improve the operating stability of the control valve under dynamic conditions. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the regulating valve body in this utility model.

[0014] Figure 3 This is a schematic diagram of the limiting groove in this utility model.

[0015] Figure 4 This is a schematic diagram of the internal structure of the hollow rod in this utility model.

[0016] In the diagram: 101, regulating valve body; 102, valve chamber; 1, stabilizing mechanism; 2, secondary connection mechanism; 11, valve stem; 12, stabilizing groove; 13, hollow rod; 14, return spring; 15, movable rod; 16, lifting plate; 21, first connecting ring; 22, fixing screw; 23, second connecting ring; 24, nut; 31, insertion rod; 32, empty groove; 41, hydraulic cylinder; 51, limit block; 52, limit groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1-4 As shown, this utility model discloses an anti-vibration surge regulating valve and provides the following two embodiments: Example 1: An anti-surge regulating valve includes a regulating valve body 101, a valve chamber 102 is provided inside the regulating valve body 101, a stabilizing mechanism 1 is provided inside the regulating valve body 101 to improve the stability of the valve stem 11 when blocking airflow, and a secondary connection mechanism 2 is provided on the outside of the regulating valve body 101 to make a secondary connection between the regulating valve body 101 and the pipeline, thereby further improving its stability. The stabilizing mechanism 1 includes a valve stem 11 that passes through the top of the regulating valve body 101. A stabilizing groove 12 is provided at the bottom of the regulating valve body 101. A hollow rod 13 is fixedly installed on the lower surface of the inner wall of the stabilizing groove 12. A return spring 14 is fixedly installed inside the hollow rod 13. A movable rod 15 is movably locked inside the hollow rod 13. The movable rod 15 and the return spring 14 are fixedly connected. A lifting plate 16 is fixedly installed at the top of the movable rod 15. The lifting plate 16 and the valve stem 11 are used in conjunction.

[0019] Example 2 differs from Example 1 in that the secondary connection mechanism 2 includes two first connecting rings 21 that are fixedly connected to the regulating valve body 101. The outer sides of the two first connecting rings 21 are threaded with symmetrically distributed fixing screws 22. The other end of the fixing screws 22 is threaded with a second connecting ring 23. One end of the multiple fixing screws 22 is threaded with a nut 24.

[0020] A plug rod 31 is fixedly installed on the lower inner wall of the hollow rod 13. The plug rod 31 is located in the middle of the return spring 14. A slot 32 is opened inside the movable rod 15. The top of the plug rod 31 is movably locked in the slot 32. By setting the plug rod 31, the stability of the movable rod 15 during descent is improved, and it is prevented from deviating.

[0021] A hydraulic cylinder 41 is fixedly installed at the top of the regulating valve body 101. The output end of the hydraulic cylinder 41 is fixedly connected to the valve stem 11. By setting the hydraulic cylinder 41, the valve stem 11 can be raised and lowered, thereby allowing the valve stem 11 to adjust the airflow.

[0022] Symmetrically distributed limiting blocks 51 are fixedly installed on the outer side of the lifting plate 16, and symmetrically distributed limiting grooves 52 are opened inside the stabilizing groove 12. The two limiting blocks 51 are respectively movably locked in the corresponding limiting grooves 52. By setting the limiting blocks 51 and limiting grooves 52, the position of the lifting plate 16 can be limited, so as to avoid the lifting height being too high, which would cause gaps between the lifting plate 16 and the stabilizing groove 12, resulting in airflow entering the interior of the stabilizing groove 12.

[0023] The lifting plate 16 is distributed in an arc shape to improve the stability of airflow.

[0024] Working principle: In actual use, the operator fixes the second connecting ring 23 to the pipe to be connected, and then fixes the flanges at both ends of the regulating valve body 101 to the pipe. After the connection is completed, the fixing screw 22 is passed through the first connecting ring 21 and the second connecting ring 23, and the connection between the first connecting ring 21 and the second connecting ring 23 is completed by installing the nut 24. The stability between the regulating valve body 101 and the pipe is improved by the dual constraint of "flange main fixing" and "first connecting ring 21 and second connecting ring 23 auxiliary reinforcement", reducing the chance of the regulating valve body 101 loosening. When the valve body 101 needs to block the airflow, the hydraulic cylinder 41 is activated, causing its output end to drive the valve stem 11 to descend until the valve stem 11 and the lifting plate 16 are in contact. At this time, the lifting plate 16 descends, and the valve stem 11 enters the stabilizing groove 12. The stabilizing groove 12 limits the end of the valve stem 11 to prevent it from shaking and surging under the impact of the airflow, and at the same time improves the impact resistance of the valve stem 11. As the lifting plate 16 descends, it drives the movable rod 15 to descend, causing the movable rod 15 to compress the return spring 14 and deform it. When the valve stem 11 is used up and rises, the return spring 14 releases its elastic force to drive the movable rod 15 and the lifting plate 16 to return to their original positions for the next use.

[0025] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A shock-absorbing regulating valve, comprising a regulating valve body (101), characterized in that: The regulating valve body (101) has a valve chamber (102) inside. The regulating valve body (101) has a stabilizing mechanism (1) inside, which is used to improve the stability of the valve stem (11) when blocking the airflow. At the same time, the regulating valve body (101) has a secondary connection mechanism (2) on the outside, so that the regulating valve body (101) and the pipeline are connected in a secondary manner. The stabilizing mechanism (1) includes a valve stem (11) that passes through the top of the regulating valve body (101). The bottom of the regulating valve body (101) is provided with a stabilizing groove (12). A hollow rod (13) is fixedly installed on the lower surface of the inner wall of the stabilizing groove (12). A return spring (14) is fixedly installed inside the hollow rod (13). A movable rod (15) is movably locked inside the hollow rod (13). The movable rod (15) and the return spring (14) are fixedly connected. A lifting plate (16) is fixedly installed at the top of the movable rod (15). The lifting plate (16) and the valve stem (11) are used together.

2. The anti-surge regulating valve as described in claim 1, characterized in that, The secondary connection mechanism (2) includes two first connecting rings (21) that are fixedly connected to the regulating valve body (101). The outer sides of the two first connecting rings (21) are threaded with symmetrically distributed fixing screws (22). The other end of the fixing screws (22) is threaded with a second connecting ring (23). One end of the multiple fixing screws (22) is threaded with a nut (24).

3. The anti-surge regulating valve as described in claim 1, characterized in that, A plug rod (31) is fixedly installed on the lower inner wall of the hollow rod (13). The plug rod (31) is located in the middle of the return spring (14). A slot (32) is opened inside the movable rod (15). The top of the plug rod (31) is movably locked in the slot (32).

4. The anti-surge regulating valve as described in claim 2, characterized in that, A hydraulic cylinder (41) is fixedly installed at the top of the regulating valve body (101), and the output end of the hydraulic cylinder (41) is fixedly connected to the valve stem (11).

5. The anti-surge regulating valve as described in claim 1, characterized in that, The lifting plate (16) is fixedly installed with symmetrically distributed limiting blocks (51), and the stabilizing groove (12) is provided with symmetrically distributed limiting grooves (52). The two limiting blocks (51) are respectively movably locked in the corresponding limiting grooves (52).

6. The anti-surge regulating valve as described in claim 5, characterized in that, The lifting plate (16) is distributed in an arc shape to improve the stability of airflow.

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