A double-link manual sealing valve

Abstract

This utility model discloses a double-link manual sealing valve, relating to the field of manual sealing valves, including a valve body with a first protective pad installed on its outer wall. This utility model, through the arrangement of the first protective pad, rotating shaft, second protective pad, fixing plate, and bolt assembly, forms a comprehensive protective barrier by tightly fitting the first and second protective pads to the front outer surface of the valve body. This barrier can resist dust erosion, acid and alkali mist corrosion, and frictional wear during long-term use. The dual protection of these two protective pads minimizes deformation, scratches, and wear on the valve body surface caused by external factors, thereby extending the overall service life of the valve and reducing downtime maintenance costs due to valve body damage. The first and second protective pads can be disassembled and maintained by unlocking the bolt assembly.

Description

Technical Field

[0001] This utility model relates to the field of manual sealing valves, specifically a double-link manual sealing valve. Background Technology

[0002] Manually operated airtight valves are a type of civil defense equipment installed on horizontal or vertical pipes to alter airflow. They are suitable for ventilation and exhaust ducts in civil defense, national defense, and civilian industrial projects where the medium is air. Manually operated airtight valves are an important component of civil defense projects, used to control the airflow direction in basement ventilation ducts. They are essential to prevent shock waves and toxic gases from entering the interior of civil defense projects, thus requiring a double-link manual sealing valve.

[0003] Existing double-link manual sealing valves are often located in areas with high personnel activity and frequent equipment handling, making them highly susceptible to accidental impacts from external objects. For example, during equipment maintenance in a workshop, falling tools or accidental collisions with forklifts or other handling equipment can directly impact the valve body. Due to the lack of specialized protective structures such as anti-collision baffles, buffer pads, or reinforced shells, the valve body cannot effectively disperse impact forces, easily leading to localized dents and deformation. This significantly shortens the overall lifespan of the valve, increases maintenance costs and replacement frequency, and the installation depth varies considerably depending on the installation environment. Some valves are installed in open areas with short operating distances, while others may be installed in locations with dense piping, narrow operating spaces, or greater depths, such as equipment mezzanines or underground pipe shafts. Furthermore, the handle height of existing double-link manual sealing valves is fixed and cannot be adjusted according to actual operational needs. When encountering scenarios where the installation location is deep, operators need to bend over, stoop, or even use additional tools to reach the handle. This not only increases the labor intensity of operation but may also lead to uneven force when opening and closing the valve due to inconvenience, affecting the valve's service life and sealing effect. Therefore, there is an urgent need for a double-link manual sealing valve. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a double-link manual sealing valve to address the problem that existing double-link manual sealing valves are often located in areas with frequent personnel movement and equipment handling, making them highly susceptible to accidental impacts from external objects. For example, during equipment maintenance in a workshop, falling tools or accidental collisions with forklifts and other handling equipment can directly impact the valve body surface. Due to the lack of specialized protective structures, such as anti-collision baffles, buffer pads, or reinforced shells, the valve body cannot effectively disperse impact forces when subjected to impacts, easily leading to localized dents and deformations. This significantly shortens the overall service life of the valve, increases equipment maintenance costs and replacement frequency, and the installation depth of the valve varies considerably in different installation environments. Some valves are installed in open areas with short operating distances, while others may be installed in locations with dense piping, narrow operating spaces, or greater depths, such as equipment mezzanines or underground pipe shafts. Furthermore, the handle height of existing double-link manual sealing valves is fixed and cannot be adjusted according to actual operational needs. When encountering scenarios where the installation location is deep, operators need to bend over, stoop, or even use additional tools to reach the handle. This not only increases the labor intensity of the operation but may also lead to uneven force when opening and closing the valve due to the inconvenience of operation, affecting the service life and sealing effect of the valve.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-link manual sealing valve, comprising a valve body, a first protective pad installed on the outer wall of the valve body, a rotating shaft fixedly connected to the outer wall of the first protective pad, a second protective pad fixedly connected to one end of the rotating shaft, a fixing plate fixedly connected to the outer walls of the first and second protective pads, and a bolt group installed on the inner wall of the fixing plate.

[0006] An adjusting rod is installed on the outer wall of the valve body. A first slot is provided on the side wall of the adjusting rod. A handle is installed on the outer wall of the adjusting rod. A fixing bolt is installed on the inner wall of the adjusting rod. A nut is threaded onto the outer wall of the fixing bolt. A second slot is provided on the side wall of the handle.

[0007] Preferably, the second protective pad forms a rotating structure with the first protective pad via a rotating shaft, and both the first and second protective pads are sleeved on the valve body.

[0008] Preferably, the side wall of the fixing plate is provided with a threaded groove, and the first protective pad and the second protective pad are threadedly connected.

[0009] Preferably, the handle is sleeved with the adjusting rod, and the adjusting rod is movably connected to the valve body.

[0010] Preferably, the first slots are arranged at equal intervals on the outer wall of the adjusting rod, and the adjusting rod is threadedly connected to the handle.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the setting of a first protective pad, a rotating shaft, a second protective pad, a fixing plate, and a bolt group, forms an all-round protective barrier by tightly fitting the first and second protective pads to the front outer surface of the valve body. This barrier can resist dust erosion, acid and alkali mist corrosion, and frictional wear during long-term use. With the double protection of these two protective pads, deformation, scratches, and wear on the valve body surface caused by external factors can be minimized, thereby extending the overall service life of the valve and reducing downtime maintenance costs caused by valve body damage. The first and second protective pads can be disassembled and maintained by unlocking the bolt group.

[0013] 2. This utility model, through the setting of an adjusting rod, a first slot, a handle, a fixing bolt, a nut, and a second slot, allows the operator to first observe the installation depth of the valve and the size of the surrounding space in the actual installation scenario to determine the required handle height. Then, loosen the nut and fixing bolt securing the handle and the adjusting rod, and move the handle up and down along the length of the adjusting rod. During this movement, carefully observe the second slot on the handle and the first slot on the adjusting rod. When the second slot is completely aligned with the corresponding first slot at the same height, stop moving the handle. At this point, insert the fixing bolt through the second slot and the corresponding first slot from the outside of the handle, so that the other end of the bolt protrudes from the adjusting rod. Finally, tighten the nut onto the protruding end of the fixing bolt. Through the tight fit between the bolt and nut, the handle is firmly fixed to the adjusting rod, completing the handle height adjustment. The handle height can be flexibly adjusted according to the distance of the operating space. This flexible adjustment method brings many significant advantages. Whether installed in a densely piped equipment room with limited operating space, or on a high-altitude pipeline far from the operator where an extended handle length is required, the most comfortable and convenient operating position can be found by adjusting the handle height. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the protective component of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the component on the adjusting rod of this utility model;

[0017] Figure 4 This is a schematic diagram of the sieving structure of the component on the adjusting rotating rod of this utility model.

[0018] In the diagram: 1. Valve body; 2. First protective pad; 3. Rotary shaft; 4. Second protective pad; 5. Fixing plate; 6. Bolt assembly; 7. Adjusting rod; 8. First slot; 9. Handle; 10. Fixing bolt; 11. Nut; 12. Second slot. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of this utility model will be described below based on its overall structure.

[0021] Please see Figures 1-4 A double-link manual sealing valve includes a valve body 1. A first protective pad 2 is installed on the outer wall of the valve body 1. A rotating shaft 3 is fixedly connected to the outer wall of the first protective pad 2. A second protective pad 4 is fixedly connected to one end of the rotating shaft 3. A fixing plate 5 is fixedly connected to the outer walls of the first and second protective pads 2. A bolt group 6 is installed on the inner wall of the fixing plate 5. The second protective pad 4 and the first protective pad 2 form a rotating structure through the rotating shaft 3. Both the first and second protective pads 2 are sleeved on the valve body 1. A threaded groove is opened on the side wall of the fixing plate 5, and the first and second protective pads 2 are threadedly connected. When using the device, the first and second protective pads 2 and 4 can protect the valve body 1 from external impacts, preventing deformation and wear on the surface of the valve body 1, thereby extending its service life. By unlocking the bolt group 6, the rotating shaft 3 can be rotated and the second protective pad 4 can be opened. Then, the first protective pad 2 can be removed, and the protective mechanism can be disassembled and maintained.

[0022] Please see Figures 1-4 A double-link manual sealing valve is disclosed. An adjusting rod 7 is mounted on the outer wall of the valve body 1. A first slot 8 is formed on the side wall of the adjusting rod 7. A handle 9 is mounted on the outer wall of the adjusting rod 7. A fixing bolt 10 is mounted on the inner wall of the adjusting rod 7. A nut 11 is threaded onto the outer wall of the fixing bolt 10. A second slot 12 is formed on the side wall of the handle 9. The handle 9 is sleeved with the adjusting rod 7, and the adjusting rod 7 is movably connected to the valve body 1. The first slots 8 are evenly spaced along the outer wall of the adjusting rod 7, and the adjusting rod 7 is threadedly connected to the handle 9. When using the device, by moving the handle 9 up and down on the adjusting rod 7, the second slot 12 is aligned with the corresponding height of the first slot 8. Then, the fixing bolt 10 is inserted into the first slot 8 and the second slot 12, and secured with the nut 11. This allows for adjustment of the height of the handle 9, flexibly adjusting the height according to the operating space to adapt to different installation depths.

[0023] Working principle: In use, first move the device to a suitable position, then put the first protective pad 2 and the second protective pad 4 onto the valve body 1, and then fix the first protective pad 2 and the second protective pad 4 with the bolt group 6. Then adjust the height of the handle 9 according to the operating space. Simply move the handle 9 up and down on the adjusting rod 7 to align the second slots 12 on both sides of the handle 9 with the corresponding first slots 8 on the adjusting rod 7. Then insert the fixing bolts 10 into the first slots 8 and the second slots 12, and then tighten the fixing bolts 10 with the nuts 11. Then, connect the valve body 1 to other devices. When the device is connected to the control panel, it can effectively absorb and buffer the impact energy when subjected to external impacts and collisions, thereby reducing the impact energy on the valve body 1 and reducing the deformation and wear on the surface of the valve body 1. Then, by unlocking the bolt group 6, the second protective pad 4 is pulled outward, and the second protective pad 4 is opened under the action of the rotating shaft 3, so that the first protective pad 2 and the second protective pad 4 can be taken out for maintenance and replacement. This completes the use of the device. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double link hand seal valve comprising a valve body (1) characterised in that: The outer wall of the valve body (1) is equipped with a first protective pad (2), and a rotating shaft (3) is fixedly connected to the outer wall of the first protective pad (2). One end of the rotating shaft (3) is fixedly connected to a second protective pad (4). A fixing plate (5) is fixedly connected to the outer walls of the first protective pad (2) and the second protective pad (4). A bolt group (6) is installed on the inner wall of the fixing plate (5). An adjusting rod (7) is installed on the outer wall of the valve body (1). A first slot (8) is provided on the side wall of the adjusting rod (7). A handle (9) is installed on the outer wall of the adjusting rod (7). A fixing bolt (10) is installed on the inner wall of the adjusting rod (7). A nut (11) is threaded onto the outer wall of the fixing bolt (10). A second slot (12) is provided on the side wall of the handle (9).

2. A double link hand seal valve according to claim 1, wherein: The second protective pad (4) forms a rotating structure with the first protective pad (2) through the rotating shaft (3), and both the first protective pad (2) and the second protective pad (4) are sleeved with the valve body (1).

3. A double link hand seal valve according to claim 1, wherein: The side wall of the fixing plate (5) is provided with a threaded groove, and the first protective pad (2) and the second protective pad (4) are threadedly connected.

4. A double link hand seal valve according to claim 1, wherein: The handle (9) is sleeved with the adjusting rod (7), and the adjusting rod (7) is movably connected to the valve body (1).

5. A double link hand seal valve according to claim 1, wherein: The first slot (8) is arranged at equal intervals on the outer wall of the adjusting rod (7), and the adjusting rod (7) is threadedly connected to the handle (9).

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