Vent valve resistant to cavitation and scouring

Abstract

The utility model discloses a ventilation valve resistant to cavitation and scouring, which belongs to the technical field of ventilation valves and comprises a ventilation valve main body and a control module fixed on the outer wall of the ventilation valve main body, and a wind shield is fixed at the central position of the inner wall of the ventilation valve main body. The two sides of the inner wall of the ventilation valve body are each rotationally provided with a sealing plate corresponding to the air baffle, positioning grooves are symmetrically formed in the inner wall of the ventilation valve body, cavitation-resistant assemblies used for blocking airflow scouring are detachably and fixedly installed through the positioning grooves, and the ends, away from each other, of the two sealing plates are each fixedly provided with a driving shaft; according to the cavitation-erosion-resistant and scouring-resistant ventilation valve, the situation that the sealing plate is eroded and scoured by airflow in the ventilation channel after being opened is greatly reduced, and the service life of the ventilation valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ventilation valve, concretely relates to a ventilation valve resistant to cavitation and scour. BACKGROUND

[0002] Ventilation valve is a simple structure, widely used regulating valve, can be applied to ventilation, environmental protection engineering in chemical industry, building materials, power station and various industries, as a gas medium flow regulating or cutting control device, the existing ventilation valve according to the position of transmission structure setting on the valve body, can be divided into outer transmission air valve and inner transmission air valve. In the application scene of high cleanliness requirement, inner transmission air valve is obviously superior to outer transmission air valve.

[0003] The patent with application No. 202320277407.3 discloses a ventilation valve, comprising: a valve body having an inner cavity extending in a first direction, a transmission unit is arranged in the inner cavity; a control box is arranged outside the inner cavity of the valve body and has a mounting cavity, a drive unit is arranged in the mounting cavity; wherein, a first connecting unit is arranged on the valve body, a second connecting unit matched with the first connecting unit is arranged on the side of the control box facing the valve body; along the radial direction, the second connecting unit is inserted into the first connecting unit and is sealingly connected with the first connecting unit to jointly define a connecting cavity, the first direction intersects with the radial direction; in the connecting cavity, the transmission unit is connected with the drive unit to enable the drive unit to drive the transmission unit to rotate.

[0004] Although the above technical solution can protect the external control equipment of the valve body and avoid the influence of the control equipment on the service life of the valve body, the valve body is easily aged and damaged due to long-time erosion and scouring of the airflow in the ventilation passage during use, thereby seriously affecting the service life of the valve body. UTILITY MODEL CONTENTS

[0005] (1) Technical problem to be solved

[0006] In view of the deficiencies of the prior art, the utility model aims to provide a ventilation valve resistant to cavitation and scour, which aims to solve the technical problem that the valve body is easily aged and damaged due to long-time erosion and scouring of the airflow in the ventilation passage during use under the prior art, thereby seriously affecting the service life of the valve body.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a kind of ventilation valve resistant to gas corrosion and scouring, which comprises a ventilation valve body and a control module fixed to the outer wall of the ventilation valve body, a wind baffle is fixed to the inner wall center position of the ventilation valve body, and a sealing plate corresponding to the wind baffle is rotatably installed on both sides of the inner wall of the ventilation valve body, wherein the inner wall of the ventilation valve body is symmetrically provided with a positioning groove, and a gas corrosion resistant assembly for blocking airflow scouring is detachably fixed in the positioning groove.

[0009] When using the ventilation valve resistant to gas corrosion and scouring according to the technical solution, the gas corrosion resistant assembly is fixed on both sides of the inner wall of the ventilation valve body, the sealing plates in the ventilation valve body are rotatably installed on both sides of the inner wall by the driving shaft, and the servo motor drives the sealing plates to rotate to the horizontal state by the driving shaft after starting, so that the two sealing plates are arranged behind the gas corrosion resistant assembly, the gas corrosion resistant assembly blocks the air, and the wind baffle of the inner wall of the ventilation valve body positions the sealing plate, so that the sealing plate remains sealed after closing, greatly reducing the erosion and scouring of the sealing plate by the airflow in the ventilation passage after opening, and improving the service life of the ventilation valve.

[0010] Preferably, the distal ends of the two sealing plates are fixedly installed with driving shafts, and the driving shafts are rotatably inserted into the inner wall of the ventilation valve body.

[0011] Further, servo motors are installed on both sides of the outer wall of the ventilation valve body, and the shafts of the servo motors are fixedly connected with the driving shafts.

[0012] Further, the side walls of the wind baffle are symmetrically provided with sealing grooves, and the proximal ends of the two sealing plates are inlaid in the sealing grooves.

[0013] Further, the ventilation valve body is provided with connecting parts at both ends, and the two connecting parts are rectangularly arrayed with through holes.

[0014] Further, the gas corrosion resistant assembly comprises a guide plate in arc structure and a base fixed to the guide plate and abutting with the inner wall of the ventilation valve body, and a stress plate is fixedly installed between the guide plate and the base.

[0015] Furthermore, both ends of the base are provided with telescopic grooves, in which springs and positioning blocks are embedded. The end of the positioning block that extends out of the base is inserted into the positioning groove.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention features anti-cavitation components fixed on both sides of the inner wall of the ventilation valve body. The sealing plates in the ventilation valve body are rotatably mounted on both sides of its inner wall via a drive shaft. After the servo motor is started, it drives the sealing plates to rotate to a horizontal state via the drive shaft, thereby positioning the two sealing plates behind the anti-cavitation components. This allows the anti-cavitation components to block the air, while the baffle plate on the inner wall of the ventilation valve body positions the sealing plates, ensuring that the sealing plates remain sealed after closing. This greatly reduces the erosion and scouring of the sealing plates by the airflow inside the ventilation channel after opening, thus extending the service life of the ventilation valve.

[0019] The cavitation-resistant component includes an arc-shaped guide plate and a base. The guide plate blocks and diverts airflow, while the load-bearing plate supports the guide plate to enhance its strength. When the guide plate is damaged by erosion and airflow scouring, the positioning block is squeezed out of the positioning groove from the outer wall of the ventilation valve body, thereby removing the base and guide plate from the ventilation valve body. After replacing the cavitation-resistant component, it is inserted into the ventilation valve body. The spring in the telescopic groove on the side wall of the base pushes the positioning block to insert it into the positioning groove, thus keeping the cavitation-resistant component fixed inside the ventilation valve body, improving the convenience of disassembling and replacing the cavitation-resistant component. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the main body of the ventilation valve of this utility model;

[0023] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the disassembled base structure of this utility model.

[0025] The marks in the drawings are: 1, the main body of the ventilation valve; 2, the servo motor; 3, the control module; 4, the through hole; 5, the anti-erosion assembly; 6, the connecting part; 7, the positioning groove; 8, the wind baffle; 9, the driving shaft; 10, the flow guide plate; 11, the sealing groove; 12, the sealing plate; 13, the stress plate; 14, the base; 15, the telescopic groove; 16, the positioning block; 17, the spring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] The specific embodiment is an anti-erosion and scouring ventilation valve, and a structure diagram thereof is shown in Figure 1 and Figure 2 The anti-erosion and scouring ventilation valve comprises a ventilation valve main body 1 and a control module 3 fixed on the outer wall of the ventilation valve main body 1. A wind baffle 8 is fixed at the center position of the inner wall of the ventilation valve main body 1, and a sealing plate 12 corresponding to the wind baffle 8 is rotatably installed on both sides of the inner wall of the ventilation valve main body 1. The inner wall of the ventilation valve main body 1 is symmetrically provided with a positioning groove 7, and an anti-erosion assembly 5 for blocking airflow scouring is detachably fixed and installed through the positioning groove 7.

[0028] The distal ends of the two sealing plates 12 are fixedly installed with driving shafts 9 rotatably inserted into the inner wall of the ventilation valve main body 1. Servo motors 2 are installed on both sides of the outer wall of the ventilation valve main body 1, and the shafts of the servo motors 2 are fixedly connected with the driving shafts 9. The side walls of the wind baffles 8 are symmetrically provided with sealing grooves 11, and the proximal ends of the two sealing plates 12 are inlaid in the sealing grooves 11. The two ends of the ventilation valve main body 1 are provided with connecting parts 6, and the connecting parts 6 are both rectangular arrays provided with through holes 4. The sealing plates 12 in the ventilation valve main body 1 are rotatably installed on both sides of the inner wall thereof through the driving shafts 9. After the servo motors 2 are started, the sealing plates 12 are rotated to a horizontal state through the driving shafts 9, so that the two sealing plates 12 are arranged behind the anti-erosion assembly 5, the anti-erosion assembly 5 blocks the air, and the wind baffles 8 on the inner wall of the ventilation valve main body 1 position the sealing plates 12, so that the sealing plates 12 remain sealed after being closed.

[0029] As shown in Figure 3 and Figure 4As shown, the cavitation-resistant component 5 includes an arc-shaped guide plate 10 and a base 14 fixed to the guide plate 10 and attached to the inner wall of the ventilation valve body 1. A force-bearing plate 13 is fixedly installed between the guide plate 10 and the base 14. Both ends of the base 14 are provided with telescopic grooves 15. Springs and positioning blocks 16 are embedded in the telescopic grooves 15. One end of the positioning block 16 extending out of the base 14 fits into the positioning groove 7. The guide plate 10 blocks and guides the airflow, and the force-bearing plate 13 supports the guide plate. 10 provides support to enhance its strength. When the guide plate 10 is damaged by erosion and airflow scouring, the positioning block 16 is squeezed out of the positioning groove 7 from the outer wall of the ventilation valve body 1, thereby removing the base 14 and the guide plate 10 from the ventilation valve body 1. After replacing the cavitation resistant component 5, it is inserted into the ventilation valve body 1. The spring in the telescopic groove 15 on the side wall of the base 14 pushes the positioning block 16 to insert it into the positioning groove 7, thereby keeping the cavitation resistant component 5 fixed inside the ventilation valve body 1.

[0030] The cross-sectional view of the main body 1 of this cavitation-resistant and erosion-resistant ventilation valve is shown below. Figure 2 As shown, its Figure 2 An enlarged schematic diagram of the structure at point A is shown below. Figure 3 As shown, the schematic diagram of the disassembled structure of its base 14 is as follows: Figure 4 As shown.

[0031] Working principle: After the servo motor 2 starts, it drives the drive shaft 9 to rotate the sealing plate 12 to a horizontal position, so that the two sealing plates 12 are positioned behind the anti-cavitation component 5, which blocks the air. At the same time, the baffle plate 8 on the inner wall of the ventilation valve body 1 positions the sealing plate 12, so that the sealing plate 12 remains sealed after closing. The guide plate 10 blocks and guides the airflow, and the force plate 13 supports the guide plate 10 to improve its strength. When the guide plate 10 is damaged by erosion and airflow, the positioning block 16 is squeezed out of the positioning groove 7 from the outer wall of the ventilation valve body 1, so that the base 14 and the guide plate 10 are removed from the ventilation valve body 1. After replacing the anti-cavitation component 5, it is inserted into the ventilation valve body 1. The spring in the telescopic groove 15 on the side wall of the base 14 pushes the positioning block 16 to insert it into the positioning groove 7, so that the anti-cavitation component 5 is fixed in the ventilation valve body 1, improving the convenience of disassembling and replacing the anti-cavitation component 5.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An erosion and scour resistant vent valve comprising a vent valve body (1) and a control module (3) fixed to the outer wall of the vent valve body (1), characterized in that, The inner wall center position of the ventilation valve body (1) is fixed with a wind baffle (8), and the both sides of the inner wall of the ventilation valve body (1) are rotatably installed with a sealing plate (12) corresponding to the wind baffle (8), wherein the inner wall of the ventilation valve body (1) is symmetrically provided with a positioning groove (7), and a gas corrosion resistant assembly (5) for blocking airflow scour is detachably fixed and installed through the positioning groove (7).

2. A vent valve resistant to cavitation and impingement erosion according to claim 1, characterized in that The both ends of the two sealing plates (12) are fixedly installed with driving shafts (9), and the driving shafts (9) are rotatably inserted into the inner wall of the ventilation valve body (1).

3. A venturi valve resistant to cavitation and erosion according to claim 2, characterized in that, The outer wall of the ventilation valve body (1) is installed with a servo motor (2) on both sides, and the shaft of the servo motor (2) is fixedly connected with the driving shaft (9).

4. A venturi valve resistant to cavitation and erosion according to claim 3, characterized in that, The side wall of the wind baffle (8) is symmetrically provided with a sealing groove (11), and the both ends of the two sealing plates (12) are inlaid in the sealing groove (11).

5. The erosion and cavitation resistant vent valve of claim 1, wherein, Both ends of the ventilation valve body (1) are provided with a connecting part (6), and the two connecting parts (6) are both provided with a through hole (4) in a rectangular array.

6. The erosion and cavitation resistant vent valve of claim 1, wherein, The gas corrosion resistant assembly (5) comprises a guide plate (10) in an arc structure and a base (14) fixed on the guide plate (10) and abutting with the inner wall of the ventilation valve body (1), and a stress plate (13) is fixedly installed between the guide plate (10) and the base (14).

7. A venturi valve resistant to cavitation and erosion according to claim 6, characterized in that Both ends of the base (14) are provided with an expansion groove (15), and a spring (17) and a positioning block (16) are inlaid in the expansion groove (15), and one end of the positioning block (16) extending out of the base (14) is inlaid in the positioning groove (7).

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