A composite exhaust valve with a deflation protection function

Abstract

The utility model relates to valve technical field, concretely relates to a composite exhaust valve with deflation protection function, including exhaust valve main part, the top fixedly connected with support frame of exhaust valve main part, the top rotatably connected with support protection spare of support frame, exhaust valve main part with the middle position sliding connection of support frame has sliding axle, the outer surface screw thread connection of sliding axle has rotation limit board, and the fine adjustment of reset spring pre -tightening force is realized through the thread cooperation of rotation limit board and sliding axle, and the positioning design of the multi -gear plug -in hole of sliding axle top forms double -regulated mechanism, can realize the fine adjustment of exhaust capacity, can also through different plug -in gear quick switching normal exhaust and large -flow emergency pressure -relief mode, satisfies the exhaust demand of many scenes, embodies the composite regulation advantage.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a composite exhaust valve with a venting protection function. Background Technology

[0002] In fields such as industrial pipeline systems, HVAC equipment, and water conservancy projects, air vents are key components that ensure the safe and stable operation of the system. Their main function is to promptly discharge air and gases accumulated in pipelines or equipment, avoiding problems such as abnormal system pressure, reduced flow, and equipment corrosion caused by air resistance.

[0003] However, most of them use fixed valve plates or single bolt adjustment structures, which can only achieve rough control of exhaust volume by replacing valve plates or adjusting preload. The adjustment accuracy is low and the operation is complicated, making it difficult to adapt to dynamic working conditions.

[0004] Plug-in positioning components (such as positioning pins) are prone to loosening and slippage under vibration or fluid impact, leading to valve plate displacement or uncontrolled exhaust gap. Furthermore, they cannot meet the dual requirements of small-flow normal pressure exhaust and large-flow emergency pressure relief, making it difficult to satisfy the requirements of modern industry for refined and multi-scenario control of the exhaust process. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing exhaust valves in the background technology, such as coarse adjustment, complicated operation, difficulty in adapting to dynamic working conditions, easy loosening and loss of control of plug-in positioning, inability to take into account both normal discharge and emergency discharge, and difficulty in meeting the needs of refined multi-scenario applications. Thus, a composite exhaust valve with leakage protection function is realized.

[0006] To achieve the above-mentioned objectives, the technical solution of this utility model is: a composite exhaust valve with a venting protection function, comprising an exhaust valve body, a support frame fixedly connected to the top of the exhaust valve body, and a support and protective component rotatably connected to the top of the support frame;

[0007] The exhaust valve body is slidably connected to the support frame at the middle position by a sliding shaft, and a rotation limiting plate is threaded onto the outer surface of the sliding shaft.

[0008] In the aforementioned composite exhaust valve with venting protection function, the bottom of the sliding shaft extends into the interior of the exhaust valve body and is fixedly connected to a sealing valve plate, the sealing valve plate being adapted to the shape of the inner bottom wall of the exhaust valve body.

[0009] In the aforementioned composite exhaust valve with venting protection function, a return spring is sleeved on the outer surface of the sliding shaft. The bottom of the return spring is fixed to the inner bottom wall of the support frame, and the top abuts against the bottom surface of the rotation limiting plate.

[0010] In the aforementioned composite exhaust valve with venting protection function, a connecting flange is connected to the bottom of the exhaust valve body, and exhaust pipes are symmetrically connected to both sides of the exhaust valve body.

[0011] In the aforementioned composite exhaust valve with venting protection function, a sliding sleeve is fixed to the inner top wall of the exhaust valve body, the sliding sleeve penetrates the inner top wall of the exhaust valve body, and the sliding shaft slides through the interior of the sliding sleeve.

[0012] In the aforementioned composite exhaust valve with venting protection function, the supporting protective component includes a connecting rod, a limiting sleeve, a plug-in post, and a protective ring.

[0013] One end of the connecting rod is rotatably connected to the top of the support frame, and the other end is fixedly connected to the limiting sleeve;

[0014] The limiting sleeve is fitted onto the top outer surface of the sliding shaft, and through holes are provided on both sides of the limiting sleeve;

[0015] The top of the sliding shaft has at least three insertion holes along the axial direction, and the insertion post passes through the through hole of the limiting sleeve and one of the insertion holes.

[0016] In the aforementioned composite exhaust valve with venting protection function, the top of the support frame is provided with an annular placement groove, and the protective ring is embedded in the placement groove.

[0017] The protective ring has multiple baffles evenly distributed along its outer periphery, and the gap width between adjacent baffles is equal to the width of a single baffle.

[0018] The top of the support frame is also provided with a groove that matches the shape of the baffle, and the baffle is engaged in the groove.

[0019] In the aforementioned composite exhaust valve with venting protection function, a support plate is fixedly connected to the bottom of the protective ring, and the support plate is snapped into the groove at the top of the support frame.

[0020] Compared with the prior art, the composite exhaust valve with leakage protection function of this utility model has at least the following beneficial effects:

[0021] 1. The composite exhaust valve with venting protection function of this utility model achieves fine adjustment of the preload of the reset spring through the threaded engagement of the rotating limit plate and the sliding shaft. Combined with the positioning design of the multi-position insertion hole on the top of the sliding shaft, a dual adjustment mechanism is formed. It can achieve fine adjustment of the exhaust volume and quickly switch between normal exhaust and high-flow emergency pressure relief mode through different insertion positions, meeting the exhaust needs of multiple scenarios and demonstrating the advantages of composite adjustment.

[0022] 2. The protective ring in the support and protection component effectively blocks the plug-in column through the cooperation of the baffle and the groove of the support frame, reducing the possibility of accidental slippage under vibration or fluid impact, and helping to maintain the stability of the exhaust gap; at the same time, the plug-in positioning can achieve a completely closed exhaust protection state, which helps to prevent unexpected leakage and improve the safety of system operation.

[0023] 3. The two adjustment methods, rotary fine adjustment and plug-in positioning, are simple to operate and can quickly respond to changes in dynamic working conditions. They can meet the stable requirements of small flow atmospheric pressure exhaust and cope with emergency pressure relief scenarios when pressure rises suddenly, adapting to the requirements of modern industry for refined control of the exhaust process. Attached Figure Description

[0024] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a front view schematic diagram of the present invention;

[0026] Figure 3 This is a second schematic diagram of the overall structure of this utility model;

[0027] Figure 4 This is a schematic cross-sectional view of the present invention;

[0028] Figure 5 This is a schematic diagram of the installation position of the support and protective component of this utility model;

[0029] Figure 6 This is a front view schematic diagram of the support and protective component of this utility model;

[0030] Figure 7 This is a front view schematic diagram of the sliding shaft of this utility model.

[0031] In the diagram: 1. Exhaust valve body; 2. Exhaust pipe; 3. Connecting flange; 4. Support frame; 5. Sliding shaft; 501. Insertion hole; 6. Return spring; 7. Rotary limit plate;

[0032] 8. Support and protective components; 801. Connecting rod; 802. Insertion post; 803. Limiting sleeve; 804. Protective ring; 805. Baffle; 806. Support plate;

[0033] 9. Sliding sleeve; 10. Sealing valve plate. Detailed Implementation

[0034] The composite exhaust valve with venting protection function of this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] This embodiment discloses a composite exhaust valve with a leak protection function. Existing exhaust valves have drawbacks such as coarse adjustment, cumbersome operation, difficulty in adapting to dynamic working conditions, and easy loosening and loss of control due to the plug-in positioning. They cannot simultaneously handle both normal and rapid venting, and thus cannot meet the needs of refined multi-scenario applications. Referring to... Figures 1-7 It mainly includes an exhaust valve body 1, a support frame 4 fixedly connected to the top of the exhaust valve body 1, and a support and protective component 8 rotatably connected to the top of the support frame 4. A sliding shaft 5 is slidably connected between the exhaust valve body 1 and the support frame 4 at the middle position, and a rotation limit plate 7 is threadedly connected to the outer surface of the sliding shaft 5.

[0037] The exhaust valve body 1 provides basic support for internal airflow and component installation. A support frame 4 is fixedly connected to the top of the exhaust valve body 1, providing stable support for the components above and vertical guidance space for the sliding shaft 5. A protective support 8 is rotatably connected to the top of the support frame 4, and its position can be adjusted by rotation to adapt to different protection and adjustment requirements under different working conditions. A sliding shaft 5 is slidably connected between the exhaust valve body 1 and the support frame 4 at the midpoint. The sliding shaft 5 can reciprocate vertically, thereby driving related components to adjust the exhaust gap. A rotating limiting plate 7 is threaded onto the outer surface of the sliding shaft 5. By rotating the rotating limiting plate 7, its vertical position on the sliding shaft 5 can be changed, thereby cooperating with other components to adjust exhaust-related parameters.

[0038] Reference Figures 1-4 The bottom of the sliding shaft 5 extends into the interior of the exhaust valve body 1 and is fixedly connected to a sealing valve plate 10, which is adapted to the shape of the inner bottom wall of the exhaust valve body 1. A return spring 6 is sleeved on the outer surface of the sliding shaft 5. The bottom of the return spring 6 is fixed to the inner bottom wall of the support frame 4, and the top abuts against the bottom surface of the rotation limit plate 7. A connecting flange 3 is connected to the bottom of the exhaust valve body 1, and exhaust pipes 2 are symmetrically connected to both sides of the exhaust valve body 1.

[0039] A sliding sleeve 9 is fixed to the inner top wall of the exhaust valve body 1. The sliding sleeve 9 penetrates the inner top wall of the exhaust valve body 1, and the sliding shaft 5 slides through the interior of the sliding sleeve 9.

[0040] The sealing valve plate 10 adopts a curved surface design that completely fits the inner bottom wall of the exhaust valve body 1, effectively preventing gas leakage. The return spring 6 transmits the adjusting force through elastic deformation, and its bottom is fixed to the reinforcing rib area of ​​the inner bottom wall of the support frame 4 by positioning welds. The symmetrical layout of the exhaust pipe 2 utilizes the principle of fluid dynamics to evenly disperse the exhaust airflow and avoid local eddies impacting the valve body. The inner wall of the sliding sleeve 9 is provided with a longitudinal guide groove, which forms a sliding fit with the guide key protruding on the outer surface of the sliding shaft 5. This ensures the straightness of axial movement and disperses stress concentration through the keyway structure, extending the service life of the sliding shaft 5.

[0041] Reference Figure 1 and Figures 4-7 The support and protective component 8 includes a connecting rod 801, a limiting sleeve 803, a plug-in post 802, and a protective ring 804. One end of the connecting rod 801 is rotatably connected to the top of the support frame 4, and the other end is fixedly connected to the limiting sleeve 803. The limiting sleeve 803 is sleeved on the top outer surface of the sliding shaft 5, and through holes are opened on both sides of the limiting sleeve 803.

[0042] The top of the sliding shaft 5 has at least three insertion holes 501 along the axial direction, and the insertion post 802 passes through the through hole of the limiting sleeve 803 and one of the insertion holes 501. The top of the support frame 4 has an annular placement groove, and the protective ring 804 is embedded in the placement groove; multiple baffles 805 are evenly distributed circumferentially around the outer periphery of the protective ring 804, and the gap width between adjacent baffles 805 is equal to the width of a single baffle 805; the top of the support frame 4 also has a groove matching the shape of the baffle 805, and the baffle 805 is snapped into the groove. The bottom of the protective ring 804 is fixedly connected to a support plate 806, and the support plate 806 is snapped into the groove on the top of the support frame 4.

[0043] One end of the connecting rod 801 is rotatably connected to the top of the support frame 4 and can rotate flexibly around the connection point. The other end is fixedly connected to the limiting sleeve 803. By rotating the connecting rod 801, the limiting sleeve 803 can be driven to adjust its position synchronously. The limiting sleeve 803 is sleeved on the top outer surface of the sliding shaft 5 and can constrain the movement range of the top of the sliding shaft 5. The limiting sleeve 803 has through holes on both sides to provide a channel for the insertion of the plug post 802.

[0044] The top of the sliding shaft 5 has at least three insertion holes 501 along the axial direction. Each insertion hole 501 is distributed along the length of the sliding shaft 5. After the insertion post 802 passes through the through hole of the limiting sleeve 803 and one of the insertion holes 501, the limiting sleeve 803 can be fixed relative to the sliding shaft 5, thereby locking the position of the sliding shaft 5 and realizing the switching of different exhaust states.

[0045] The top of the support frame 4 has an annular placement groove, in which the protective ring 804 is embedded. The placement groove provides initial positioning for the protective ring 804. Multiple baffles 805 are evenly distributed circumferentially around the outer periphery of the protective ring 804. The gap between adjacent baffles 805 is equal to the width of a single baffle 805. This design ensures that when the protective ring 804 rotates, the baffles 805 or the gaps evenly correspond to the positions of the insertion posts 802. The top of the support frame 4 also has grooves matching the shape of the baffles 805. The baffles 805 engage in the grooves, restricting the rotation of the protective ring 804. Furthermore, a support plate 806 is fixedly connected to the bottom of the protective ring 804. The support plate 806 engages in the groove at the top of the support frame 4, further enhancing the stability of the protective ring 804 after installation and preventing it from shifting under operating conditions.

[0046] The working principle of the composite exhaust valve with leakage protection function of this utility model is as follows: First, the connecting flange 3 at the bottom of the exhaust valve body 1 is sealed and connected to the external equipment to be vented. At this time, the exhaust pipe 2 is kept in communication with the internal cavity of the exhaust valve body 1, providing a channel for gas to be discharged.

[0047] The reset spring 6 is in a natural pre-tightened state. Its bottom is fixed to the inner bottom wall of the support frame 4 and its top abuts against the rotating limit plate 7. The spring force pushes the rotating limit plate 7 to move upward. Because the rotating limit plate 7 is threadedly connected to the sliding shaft 5, it drives the sliding shaft 5 to slide upward along the sliding sleeve 9. Finally, the sealing valve plate 10 at the bottom of the sliding shaft 5 moves upward and forms an initial exhaust gap with the inner bottom wall of the exhaust valve body 1.

[0048] The gas to be discharged from the external equipment enters the cavity of the exhaust valve body 1 through the connecting flange 3, flows upward through the gap between the sealing valve plate 10 and the inner bottom wall, and is finally discharged through the exhaust pipes 2 on both sides of the exhaust valve body 1, completing the basic exhaust process.

[0049] This device achieves controllable exhaust volume through a dual approach of rotary fine-tuning and plug-in positioning, specifically involving two steps of adjustment:

[0050] Fine adjustment of return spring preload

[0051] Rotating the rotating limiting plate 7 (using its threaded engagement with the sliding shaft 5) can change the distance between the rotating limiting plate 7 and the inner top wall of the support frame 4.

[0052] When the rotating limit plate 7 is rotated clockwise, the distance between them decreases, the compression of the return spring 6 increases, and the upward thrust increases accordingly. This causes the sliding shaft 5 to move the sealing valve plate 10 upward by a larger margin, the exhaust gap widens, and the exhaust volume increases accordingly.

[0053] When the rotating limit plate 7 is rotated counterclockwise, the distance between them increases, the compression of the return spring 6 decreases, and the upward thrust weakens accordingly. This causes the sliding shaft 5 to move the sealing valve plate 10 downward by a larger margin, reducing the exhaust gap and consequently decreasing the exhaust volume.

[0054] Sliding shaft insertion positioning

[0055] The sliding shaft 5 has three insertion holes 501 distributed at the top, middle, and bottom. These holes, along with the limiting sleeve 803 in the support and protective component 8, cooperate with the insertion post 802 to achieve three fixed venting modes:

[0056] Mode 1: Exhaust off

[0057] Rotate the connecting rod 801 at the top of the support frame 4 to rotatably connect it to the support frame 4, so that the limiting sleeve 803 is fitted onto the top outer surface of the sliding shaft 5. Press the sliding shaft 5 down until the sealing valve plate 10 is completely fitted with the inner bottom wall of the exhaust valve body 1 without any exhaust gap. At this time, the top of the sliding shaft 5 is flush with the connecting rod 801. Insert the plug 802 through the through hole of the limiting sleeve 803 and the plug hole 501 at the top of the sliding shaft 5 to lock the position of the sliding shaft 5, and the device stops exhausting.

[0058] Mode 2: Normal exhaust

[0059] Pull the sliding shaft 5 upward to form a normal exhaust gap between the sealing valve plate 10 and the inner bottom wall. Insert the plug 802 through the through hole of the limiting sleeve 803 and the plug hole 501 between the sliding shaft 5. After locking, maintain this gap, which is suitable for normal exhaust needs.

[0060] Mode 3: High-flow exhaust

[0061] Continue to pull the sliding shaft 5 upward to make the sealing valve plate 10 form the maximum exhaust gap with the inner bottom wall. Insert the plug 802 through the through hole of the limiting sleeve 803 and the plug hole 501 at the bottom of the sliding shaft 5. After locking, it meets the requirements of high exhaust volume scenarios (such as rapid pressure relief when the equipment pressure rises suddenly).

[0062] Connector anti-detachment protection

[0063] To prevent the plug post 802 from accidentally slipping out under conditions such as vibration and fluid impact, the protective ring 804 must be activated simultaneously.

[0064] After the connecting rod 801 drives the limiting sleeve 803 to be fitted onto the outer surface of the sliding shaft 5, the protective ring 804 is placed into the preset placement groove at the top of the support frame 4. At this time, the baffles 805 evenly distributed on the outer surface of the protective ring 804 (designed so that "baffle width = gap between adjacent baffles" to ensure no blind spots in protection) correspond to the position of the plug-in post 802. The baffles 805 prevent the plug-in post 802 from sliding axially, thus achieving anti-detachment protection. At the same time, the support plate 806 at the bottom of the protective ring 804 is inserted into the groove of the support frame 4 to prevent the protective ring 804 from rotating or shifting.

[0065] When it is necessary to replace connector 802 or adjust the exhaust mode

[0066] Rotate the connecting rod 801 to disengage the limiting sleeve 803 from the outer surface of the sliding shaft 5, thereby releasing the restriction on the top of the protective ring 804;

[0067] Remove the protective ring 804 and dislodge the support plate 806 at its bottom from the groove of the support frame 4;

[0068] Rotate the protective ring 804 to align the gap between the baffles 805 with the position of the plug post 802 (avoiding the obstruction of the baffles 805), and the plug post 802 can be easily pulled out.

[0069] After replacing the new plug post 802 or adjusting it to the target plug hole 501, reverse the operation to reset the protective ring 804 and the connecting rod 801 to restore the protective state.

[0070] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of this invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0071] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0072] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A composite exhaust valve with a venting protection function, comprising an exhaust valve body (1), characterized in that: The top of the exhaust valve body (1) is fixedly connected to a support frame (4), and the top of the support frame (4) is rotatably connected to a support protective component (8); The exhaust valve body (1) is slidably connected to the support frame (4) at the middle position of the sliding shaft (5), and the outer surface of the sliding shaft (5) is threaded with a rotation limiting plate (7).

2. The composite exhaust valve with leakage protection function according to claim 1, characterized in that: The bottom of the sliding shaft (5) extends into the interior of the exhaust valve body (1) and is fixedly connected to a sealing valve plate (10), the sealing valve plate (10) being adapted to the shape of the inner bottom wall of the exhaust valve body (1).

3. The composite exhaust valve with leakage protection function according to claim 1, characterized in that: A reset spring (6) is sleeved on the outer surface of the sliding shaft (5). The bottom of the reset spring (6) is fixed to the inner bottom wall of the support frame (4), and the top abuts against the bottom surface of the rotating limiting plate (7).

4. The composite exhaust valve with leakage protection function according to claim 1, characterized in that: The bottom of the exhaust valve body (1) is connected to a connecting flange (3), and exhaust pipes (2) are symmetrically connected to both sides of the exhaust valve body (1).

5. The composite exhaust valve with leakage protection function according to claim 1, characterized in that: A sliding sleeve (9) is fixed to the inner top wall of the exhaust valve body (1). The sliding sleeve (9) penetrates the inner top wall of the exhaust valve body (1), and the sliding shaft (5) slides through the interior of the sliding sleeve (9).

6. The composite exhaust valve with leakage protection function according to claim 1, characterized in that: The supporting protective component (8) includes a connecting rod (801), a limiting sleeve (803), a plug-in post (802), and a protective ring (804); One end of the connecting rod (801) is rotatably connected to the top of the support frame (4), and the other end is fixedly connected to the limiting sleeve (803); The limiting sleeve (803) is sleeved on the top outer surface of the sliding shaft (5), and through holes are provided on both sides of the limiting sleeve (803). The top of the sliding shaft (5) is provided with at least three insertion holes (501) along the axial direction, and the insertion post (802) passes through the through hole of the limiting sleeve (803) and one of the insertion holes (501).

7. The composite exhaust valve with leakage protection function according to claim 6, characterized in that: The top of the support frame (4) is provided with an annular placement groove, and the protective ring (804) is embedded in the placement groove; The outer periphery of the protective ring (804) is uniformly distributed with multiple baffles (805) along the circumferential direction, and the gap width between adjacent baffles (805) is equal to the width of a single baffle (805); The top of the support frame (4) is also provided with a groove that matches the shape of the baffle (805), and the baffle (805) is engaged in the groove.

8. The composite exhaust valve with leakage protection function according to claim 7, characterized in that: The bottom of the protective ring (804) is fixedly connected to a support plate (806), which is snapped into the groove at the top of the support frame (4).

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