A bidirectional anti-shock wave valve

Abstract

The present invention provides a two-way anti-shock wave valve, comprising a valve body and a rotating shaft installed in an inner cavity of the valve body, a valve leaf installed on the rotating shaft, the valve leaf can rotate with the rotating shaft, one end of the rotating shaft passes through a sleeve through hole, and the other end is connected to the side wall of the valve body, the sleeve is connected to a connecting rod via a connecting piece, the connecting piece is connected to one end of a spring, the other end of the spring is connected to one end of a hook, the other end of the hook is connected to the fixed block, the fixed block is provided on the outer surface of the side wall of the valve body, the valve leaves are provided in two rows, the valve leaf baffle is installed in the inner cavity of the valve body, and the inner cavity of the valve body is also provided with a sealing frame and a sealing strip. The present invention solves the problem of the lack of a two-way anti-shock wave valve in the prior art, promotes the improvement of social productivity, promotes economic development, consolidates production safety, and protects people's lives.

Description

Technical Field

[0001] The present invention relates to the field of shock wave valves, in particular to a bidirectional anti-shock wave valve. Background Art

[0002] Currently, HVAC systems must be considered when designing control rooms in industries like petrochemicals and nuclear power. National standards mandate the installation of anti-shockwave valves at air inlets and outlets to protect personnel and equipment from external shock waves. When a shockwave strikes, the valve instantly closes, blocking the wave outside. When the shockwave dissipates, the spring automatically resets the valve, allowing normal ventilation.

[0003] Currently, the shock wave valves with large ventilation volumes on the market are all one-way and can only withstand shock waves from one side. Valves that can withstand shock waves in both directions have smaller ventilation volumes. However, in some special situations where explosion sources exist both inside and outside, shock wave valves are required to have the ability to withstand shock waves in both directions, with a high ventilation volume per unit area. They must be able to close instantly under both positive and negative pressure conditions to provide protection.

[0004] Therefore, it is necessary to propose a new technical solution to adapt to this environment with bidirectional shock waves and high ventilation capacity per unit area. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and provide a bidirectional anti-shock wave valve on the market. The specific technical solution is as follows:

[0006] The present invention provides a bidirectional anti-shock wave valve, comprising a valve body, a connecting arm, a connecting rod, a bracket, a rotating shaft and a valve leaf;

[0007] Furthermore, the valve body has an inner cavity;

[0008] Furthermore, the connecting arms are relatively arranged on both sides of the valve body;

[0009] Furthermore, the connecting rods are vertically arranged on both sides of the valve body and are movably connected to the connecting arms through connecting pieces;

[0010] Furthermore, at least two groups of the stents are arranged in parallel in the inner cavity;

[0011] Furthermore, each set of brackets includes two side brackets, and the two side brackets are respectively arranged on the side wall of the inner cavity in parallel with each other, and each side bracket has an opening and a receiving groove adjacent to the opening;

[0012] Furthermore, the rotating shaft is horizontally arranged in the inner cavity, the two ends of the rotating shaft are respectively accommodated in the accommodating grooves, and one end of the rotating shaft passes through the side wall of the valve body and is connected to the connecting arm;

[0013] Furthermore, the valve leaf is fixedly connected to the rotating shaft, and the valve leaf can move toward the opening under the action of an external force, and the rotation directions of the valve leaves on the two groups of brackets are consistent.

[0014] Furthermore, in the above technical solution, the valve body is a rectangular shell, and ventilation holes are respectively opened on two opposite sides of the rectangular shell, and the ventilation holes are connected to the inner cavity.

[0015] Furthermore, the connecting arm includes a combination of multiple sleeves, springs, hooks and fixing blocks;

[0016] Furthermore, the rotating shaft is fixedly connected to the sleeve, the connecting rod is movably connected to the sleeve via a connecting piece, and the valve leaf, rotating shaft, sleeve and connecting rod are linked together;

[0017] Furthermore, one end of the spring is connected to the connecting member, and the other end is connected to the hook, and the hook is connected to the fixing block;

[0018] Furthermore, the fixing block is fixedly mounted on the outer surface of the side wall of the valve body and corresponds one-to-one with the hook.

[0019] Furthermore, in the above technical solution, the axial direction of the connecting rod is parallel to the side wall of the rectangular shell.

[0020] Furthermore, the side bracket includes a valve leaf sealing bracket and a side frame sealing bracket;

[0021] Furthermore, the valve leaf sealing frame is a concave sealing frame, the concave side of which is fixed to the side wall of the inner cavity of the valve body, and the central groove of the concave sealing frame is the accommodating groove;

[0022] Furthermore, the side frame sealing bracket is in the shape of an elongated strip and is vertically mounted on the side wall of the inner cavity of the valve body, and fits tightly with the valve leaf in the closed state;

[0023] Furthermore, the valve leaf sealing frame and the side frame sealing frame are sequentially connected at intervals;

[0024] In the above technical solution, further, a sealing strip is installed on the side bracket;

[0025] The sealing strips include valve leaf sealing strips and side frame sealing strips;

[0026] The valve leaf sealing strip is installed on the valve leaf sealing frame, and the side frame sealing strip is installed on the side frame sealing bracket.

[0027] In the above technical solution, the rotating shaft corresponds to the receiving groove one by one.

[0028] Furthermore, in the above technical solution, the valve leaf is a rectangular leaf, one side of the long side of the rectangular leaf is connected to the rotating shaft, and a plurality of the valve leaves are arranged in parallel in the inner cavity of the valve body.

[0029] The above technical solution further includes a valve leaf baffle, which is installed on the side wall of the inner cavity of the valve body, its setting direction is parallel to the axial direction of the rotating shaft, and the installation position forms a 45° angle with the horizontal direction of the rotating shaft.

[0030] Furthermore, in the above technical solution, grilles are installed on both sides of the ventilation hole of the valve body.

[0031] The present invention has the following beneficial effects:

[0032] 1. Compared with the one-way anti-shock wave valve in the prior art, the present invention has the ability to resist two-way shock waves, and the effective ventilation area per unit area is larger, and the ventilation capacity is enhanced under the same size and pressure drop, which expands the application range and performance, and solves the existing problems;

[0033] 2. The bidirectional anti-shock wave valve proposed by the present invention has clear structures of various parts and simple principles, which are within the scope of knowledge of people in this field. It can be produced in large quantities, and each component is highly replaceable and can be produced in a standardized and unified manner;

[0034] 3. The bidirectional anti-shock wave valve proposed by the present invention uses a spring to reset the valve, does not require an actuator or other electrical components to drive it, can close quickly, block the shock wave, save energy, and can adapt to environments without power or air sources. The valve can also be used to measure the size of the shock wave based on the extension and contraction length of the spring or by adding a sensing device.

[0035] 4. After the shock wave passes and the pressure difference decreases, the valve leaf automatically resets under the action of the spring to restore normal ventilation;

[0036] 5. The present invention has a bidirectional grid, which can resist the impact of flying objects on both sides and protect the internal structure of the valve body.

[0037] 6. The function of the present invention in resisting bidirectional shock waves is not affected by damage to the valve leaf on one side.

[0038] 7. The various structures of the bidirectional anti-shock wave valve proposed by the present invention are not fixed and can be replaced equivalently as long as the working requirements of the valve are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is a schematic diagram of the front view of the bidirectional anti-shock wave valve of the present invention;

[0041] Figure 2 Schematic diagram of a top view of the bidirectional anti-shock wave valve of the present invention;

[0042] Figure 3 It is a side view of the bidirectional anti-shock wave valve of the present invention;

[0043] Figure 4 It is a schematic cross-sectional view of the bidirectional anti-shock wave valve of the present invention;

[0044] Figure 5 This is a schematic diagram of normal ventilation and shock wave direction of the bidirectional anti-shock wave valve of the present invention;

[0045] Figure 6 This is a schematic diagram of the closed state of the valve leaf of the bidirectional anti-shock wave valve according to the present invention;

[0046] Figure 7 The sealing strip is compressed at one end of the valve leaf of the bidirectional anti-shock wave valve of the present invention.

[0047] Among them: 1-valve body, 2-grid, 3-valve leaf, 4-valve leaf baffle, 5-rotating shaft, 6-valve leaf sealing frame, 7-valve leaf sealing strip, 8-side frame sealing bracket, 9-side frame sealing strip, 10-sleeve, 11-spring, 12-connecting rod, 13-hook, 14-connecting piece, 15-fixing block. DETAILED DESCRIPTION

[0048] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0049] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0050] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, the connection may be fixed, detachable, or integrated; it may be mechanical or electrical; it may be direct or indirect through an intermediate medium; it may represent internal communication between two components or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] Example

[0052] The existing one-way anti-shock wave valves with large ventilation capacity on the market are not suitable for the environment of two-way shock waves, while the ventilation capacity of valves that can play a two-way anti-shock wave role is relatively small. Therefore, there is an urgent need to launch a two-way anti-shock wave valve with strong ventilation capacity per unit area.

[0053] Figure 1 This is a schematic diagram of the front view of the bidirectional anti-shock wave valve of the present invention; Figure 2 Schematic diagram of a top view of the bidirectional anti-shock wave valve of the present invention; Figure 3 It is a side view of the bidirectional anti-shock wave valve of the present invention; Figure 4 It is a schematic cross-sectional view of the bidirectional anti-shock wave valve of the present invention; Figure 5 This is a schematic diagram of normal ventilation and shock wave direction of the bidirectional anti-shock wave valve of the present invention; Figure 6 This is a schematic diagram of the closed state of the valve leaf of the bidirectional anti-shock wave valve according to the present invention; Figure 7 The sealing strip is compressed at one end of the valve leaf of the bidirectional anti-shock wave valve of the present invention.

[0054] Please refer to Figure 1-4 The bidirectional anti-shock wave valve provided in this embodiment includes a valve body 1, a connecting arm, a connecting rod 12, a bracket, a rotating shaft 5 and a valve leaf 3;

[0055] The valve body 1 has an inner cavity;

[0056] The connecting arms are relatively arranged on both sides of the valve body 1;

[0057] The connecting rods 12 are respectively vertically arranged on both sides of the valve body 1 and are movably connected to the connecting arms through the connecting members 14;

[0058] At least two groups of the stents are arranged in parallel in the inner cavity;

[0059] Each set of brackets includes two side brackets, the two side brackets are respectively arranged parallel to each other on the side wall of the inner cavity, and each side bracket has an opening and a receiving groove adjacent to the opening;

[0060] The rotating shaft 5 is horizontally arranged in the inner cavity, and both ends of the rotating shaft 5 are respectively accommodated in the accommodating grooves, and one end of the rotating shaft 5 passes through the side wall of the valve body 1 and is connected to the connecting arm;

[0061] The valve leaf 3 is fixedly connected to the rotating shaft 5. The valve leaf can move toward the opening under the action of an external force, and the rotation directions of the valve leaves on the two groups of brackets are consistent.

[0062] Furthermore, the valve body 1 is a rectangular shell, and ventilation holes are respectively opened on two opposite sides of the rectangular shell, and the ventilation holes are connected to the inner cavity.

[0063] Furthermore, the connecting arm includes a combination of multiple sleeves 10, springs 11, hooks 13 and fixing blocks 15;

[0064] The rotating shaft 5 is fixedly connected to the sleeve 10, and the connecting rod 12 is movably connected to the sleeve 10 via a connecting piece 14. The valve leaf 3, the rotating shaft 5, the sleeve 10 and the connecting rod 12 are linked together;

[0065] One end of the spring 11 is connected to the connecting member 14, and the other end is connected to the hook 13, and the hook 13 is connected to the fixing block 15;

[0066] Furthermore, the fixing block 15 is fixedly mounted on the outer surface of the side wall of the valve body 1 and corresponds one-to-one with the hook 13 .

[0067] The axial direction of the connecting rod 12 is parallel to the side wall of the rectangular housing.

[0068] The side bracket includes a valve leaf sealing bracket 6 and a side frame sealing bracket 8;

[0069] The valve leaf sealing frame 6 is a concave sealing frame, the concave side of which is fixed to the inner cavity side wall of the valve body 1, and the central groove of the concave sealing frame is the accommodating groove;

[0070] The side frame sealing bracket 8 is in the shape of a long strip and is vertically mounted on the inner cavity side wall of the valve body 1 and fits tightly with the valve leaf 3 in the closed state;

[0071] The valve leaf sealing frame 6 and the side frame sealing frame 8 are sequentially connected at intervals;

[0072] The side bracket is also equipped with a sealing strip;

[0073] The sealing strips include a valve leaf sealing strip 7 and a side frame sealing strip 9;

[0074] The valve leaf sealing strip 7 is installed on the valve leaf sealing frame 6 , and the side frame sealing strip 9 is installed on the side frame sealing bracket 8 .

[0075] The rotating shaft 5 corresponds to the accommodating groove one by one

[0076] The valve leaf 3 is a rectangular leaf, one side of the long side of the rectangular leaf is connected to the rotating shaft 5 , and a plurality of valve leaves 3 are arranged in parallel in the inner cavity of the valve body 1 .

[0077] It also includes a valve leaf baffle 4, which is installed on the side wall of the inner cavity of the valve body 1. Its setting direction is parallel to the axial direction of the rotating shaft 5, and its installation position forms an angle of 45° with the horizontal direction of the rotating shaft 5.

[0078] Grilles 2 are installed on both sides of the valve body 1 where the ventilation holes are opened.

[0079] See Figure 4-7 The bidirectional anti-shock wave valve provided by the present invention has its valve leaf 3 in an open state under normal conditions, such as Figure 4 As shown, the valve leaf 3 can maintain a certain opening angle under the action of the valve leaf baffle 4, and can also prevent the valve leaf 3 from excessive rotation; when the bidirectional anti-shock wave valve is in working state, as shown in FIG. Figure 7 As shown, the valve leaf 3 is closed under the action of the shock wave. After closing, the valve leaf 3 is in close contact with the valve leaf sealing strip 7 on the valve leaf sealing frame 6 and the side frame sealing strip 9 on the side frame sealing bracket 8, thereby achieving a sealing effect.

[0080] See also Figure 5 The present invention can realize the functions of two-way ventilation and two-way shock wave resistance, and its working principle is as follows:

[0081] Under the action of the shock wave, the valve leaf 3 is forced to close by the shock wave, driving the rotating shaft 5 to rotate, causing the sleeve 10 to rotate around the rotating shaft 5, thereby driving the connecting rod 12 to move vertically upward, causing the spring 11 to be in a stretched state, and applying a vertical downward component force to the connecting rod 12. When the shock wave gradually decreases, the pressure on the valve leaf 3 becomes smaller. Because the vertical upward traction force exerted by the valve leaf pressure on the connecting rod 12 is less than the vertical downward component force exerted by the spring on the connecting rod, the connecting rod 12 moves vertically downward, and the valve leaf 3 gradually opens and is in a ventilation state. A nut is installed at the end of the hook 13, and the spring 11 can be extended and retracted by tightening or loosening the nut.

[0082] Figure 6 The figure shows the closed state of the two-way anti-shock wave valve leaf:

[0083] When there is a shock wave on the left side, the left valve leaf 3 of the two-way anti-shock wave valve is instantly closed under the action of the shock wave, and the valve leaf 3 and the left sealing strip 7 are pressed tightly with the frame sealing strip 9 to achieve the functions of resisting shock waves and sealing;

[0084] When there is a shock wave on the right side, the right valve leaf 3 of the two-way anti-shock wave valve is instantly closed under the action of the shock wave, and the valve leaf 3 and the right sealing strip 7 are pressed tightly with the frame sealing strip 9 to achieve the functions of resisting shock waves and sealing;

[0085] When shock waves occur on both sides, the valve leaves 3 on both sides of the bidirectional anti-shock wave valve are instantly closed and pressed against the sealing strips 7 on both sides and the frame sealing strips 9 to achieve the functions of resisting shock waves and sealing.

[0086] Figure 7 The figure shows a schematic diagram of the two-way anti-shock wave valve leaf in contact with and pressed against the sealing strip when closed. When a shock wave comes, the valve leaf 3 rotates rapidly around the rotating shaft 5 and contacts the sealing strip 7 and the frame sealing strip 9. Under the action of the external shock wave, it is pressed to achieve the sealing function.

[0087] The valve provided by the present invention has a grille provided at its ventilation hole, which can resist foreign matter flying toward the valve body under the action of external force and play a role in protecting the internal structure of the valve body.

[0088] The bidirectional anti-shock wave valve provided by the present invention has a flexible structure and a simple and clear principle. Therefore, the structure of the present invention is highly replaceable and its derived structural forms are also diverse.

[0089] The bidirectional anti-shock wave valve described in the present invention uses a spring 11 as a reset power source, does not require electrical components to drive, and is purely mechanical movement, saving energy and being safe and reliable. In an environment with shock wave pressure, the greater the pressure given by the shock wave, the tighter the fit between the valve leaf 3 and the sealing device.

[0090] The bidirectional anti-shock wave valve provided by the present invention has highly replaceable components, and as long as the working principle and use requirements are met, equivalent components can be used to replace them.

[0091] For example, the valve leaf baffle 4 can also be replaced with a valve leaf stopper, which can be fixed to the side wall of the valve body 1 in the same way as the shaft is installed, or a stopper can be set on either side of the valve body side wall. As long as it can keep the valve leaf at a certain opening angle and prevent excessive rotation, it can be changed at will;

[0092] The structural form of the valve leaf 3 and the hook 13 is not limited; the fixing block 15 can also be replaced by a fixing rod passing through the two opposite side walls of the valve body.

[0093] Therefore, the valve provided by the present invention is easy to maintain, highly practical, and can be mass-produced and standardized.

[0094] Furthermore, the bidirectional anti-shock wave valve provided by the present invention can also be used as a one-way anti-shock wave valve by replacing a row of valve leaves 3 .

[0095] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0096] Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention, and that those skilled in the art may make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A bidirectional anti-shock wave valve, characterized in that: It comprises a valve body (1), a connecting arm, a connecting rod (12), a bracket, a rotating shaft (5) and a valve leaf (3); The valve body (1) has an inner cavity; The connecting arms are arranged oppositely on both sides of the valve body (1); The connecting rods (12) are respectively vertically arranged on both sides of the valve body (1) and are movably connected to the connecting arms via a connecting member (14); At least two groups of the stents are arranged in parallel in the inner cavity; Each set of brackets includes two side brackets, the two side brackets are respectively arranged parallel to each other on the side wall of the inner cavity, and each side bracket has an opening and a receiving groove adjacent to the opening; The rotating shaft (5) is horizontally arranged in the inner cavity, and both ends of the rotating shaft (5) are respectively accommodated in the accommodating grooves. One end of the rotating shaft (5) passes through the side wall of the valve body (1) and is connected to the connecting arm; The valve leaf (3) is fixedly connected to the rotating shaft (5), and the valve leaf can move toward the opening under the action of an external force, and the rotation directions of the valve leaves on the two sets of brackets are consistent. The side bracket comprises a valve leaf sealing bracket (6) and a side frame sealing bracket (8); The valve leaf sealing frame (6) is a concave sealing frame, the concave side of which is fixed to the inner cavity side wall of the valve body (1), and the central groove of the concave sealing frame is the accommodating groove; The side frame sealing bracket (8) is in the shape of an elongated strip and is vertically mounted on the inner cavity side wall of the valve body (1) and is tightly fitted with the valve leaf (3) in the closed state; The valve leaf sealing frame (6) and the side frame sealing frame (8) are sequentially connected at intervals. The connecting arm comprises a combination of a plurality of sleeves (10), a spring (11), a hook (13) and a fixing block (15); The rotating shaft (5) is fixedly connected to the sleeve (10), the connecting rod (12) is movably connected to the sleeve (10) via a connecting piece (14), and the valve leaf (3), the rotating shaft (5), the sleeve (10) and the connecting rod (12) are linked together; One end of the spring (11) is connected to the connecting member (14), and the other end is connected to the hook (13), and the hook (13) is connected to the fixing block (15); The fixing block (15) is fixedly mounted on the outer surface of the side wall of the valve body (1) and corresponds one-to-one with the hook (13).

2. The bidirectional anti-shock wave valve according to claim 1, characterized in that: The valve body (1) is a rectangular shell, and ventilation holes are respectively provided on two opposite sides of the rectangular shell, and the ventilation holes are communicated with the inner cavity.

3. The bidirectional anti-shock wave valve according to claim 2, characterized in that: The axial direction of the connecting rod (12) is parallel to the side wall of the rectangular shell.

4. The bidirectional anti-shock wave valve according to claim 1, characterized in that: The side bracket is also equipped with a sealing strip; The sealing strip comprises a valve leaf sealing strip (7) and a side frame sealing strip (9); The valve leaf sealing strip (7) is mounted on the valve leaf sealing frame (6), and the side frame sealing strip (9) is mounted on the side frame sealing bracket (8).

5. The bidirectional anti-shock wave valve according to claim 1, characterized in that: The rotating shaft (5) corresponds to the accommodating groove one by one.

6. The bidirectional anti-shock wave valve according to claim 1, characterized in that: The valve leaf (3) is a rectangular leaf, one side of the long side of the rectangular leaf is connected to the rotating shaft (5), and a plurality of valve leaves (3) are arranged in parallel in the inner cavity of the valve body (1).

7. The bidirectional anti-shock wave valve according to claim 1, characterized in that: It also includes a valve leaf baffle (4), which is installed on the side wall of the inner cavity of the valve body (1), with its installation direction parallel to the axial direction of the rotating shaft (5), and its installation position forms an angle of 45° with the horizontal direction of the rotating shaft (5).

8. The bidirectional anti-shock wave valve according to claim 1, characterized in that: Grilles (2) are installed on both sides of the valve body (1) where the ventilation hole is opened.

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