Safety ventilation device for chemical batching room

Abstract

The utility model discloses a safe ventilation device for a chemical batching room, and relates to the technical field of safe ventilation. The safety ventilation device for the chemical batching room comprises a ventilation box, a filter plate is slidably connected to the top of the ventilation box, a bearing block abuts against the bottom of the filter plate, lifting springs are fixedly connected to the bottom of the bearing block, and the multiple sets of lifting springs are linearly arrayed at the positions, close to the bottom, of the inner side of the ventilation box; one side of the filter plate is fixedly connected with a sliding block, the sliding block is arranged in an inverted L shape, impurities are adsorbed through the filter plate, at the moment, the filter plate can drive a bearing block and the sliding block to extrude a lifting spring due to weight reduction, so that a sealing spring pushes a pushing block to drive a sliding rod and a sealing plate to be closed for sealing, and the rapid closing effect is achieved; the problem that the discharged gas does not meet the standard due to the fact that the filter plate needing to be replaced cannot be replaced in the first time in a manual overhauling mode is solved, and the rapid closing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of safety ventilation technology, specifically a safety ventilation device for a chemical batching room. Background Technology

[0002] Safe ventilation refers to the use of a scientific ventilation system to control parameters such as air quality, temperature, and humidity in the workplace within a certain range to ensure the health and safety of workers. In chemical batching rooms, air and exhaust gases need to be filtered before being discharged to achieve the required cleanliness of the exhaust air.

[0003] According to the ventilation safety device for chemical workshops disclosed in Chinese Patent Publication No. CN221923803U, the device includes a drive motor that rotates a second drive shaft, which in turn rotates a first drive shaft via a second bevel gear, which in turn rotates a drive fan. This creates a negative pressure inside the ventilation housing, causing a sealing plate to move and allowing air to enter the ventilation housing. The air then passes through a filter plate to filter harmful substances. A cleaning motor then rotates a cleaning shaft, which in turn drives a cleaning brush to clean the filter plate, greatly improving the filtration effect of the filter plate. Ultimately, this device cleans the dust adhering to the surface of the filter screen after long-term use, enhancing the filter screen's adsorption capacity.

[0004] The ventilation methods described above use fans to draw in air from the factory workshop and exhaust gases, and then filter plates to adsorb harmful impurities and particulate matter in the gas, thereby ensuring that the exhaust air meets the standards. However, the filter plates need to be replaced after long-term use, so regular maintenance is required. Manual maintenance cannot guarantee that the filter plates that need to be replaced will be replaced in time, which leads to the problem that the exhaust gas does not meet the standards. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a safety ventilation device for chemical batching rooms, which solves the problem that manual maintenance methods cannot guarantee the timely replacement of filter plates that need to be replaced, resulting in exhaust gas that does not meet standards.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A safety ventilation device for a chemical batching room. The device includes a ventilation box, a filter plate slidably connected to the top of the ventilation box, a load-bearing block abutting the bottom of the filter plate, and a lifting spring fixedly connected to the bottom of the load-bearing block. Multiple lifting springs are arranged in a linear array inside the ventilation box near the bottom. A sliding block is fixedly connected to one side of the filter plate, and the sliding block is in an inverted "L" shape. A pushing block abuts the side of the sliding block away from the load-bearing block. A sliding rod is fixedly connected to the side of the pushing block away from the sliding block. A sealing plate is fixedly connected to the end of the sliding rod away from the pushing block. A ventilation hole is provided on the side of the ventilation box near the load-bearing block, and a closing component is provided on the side of the pushing block away from the sliding block.

[0007] Preferably, the closing assembly includes a sealing spring, which is fixedly connected to one side of the push block. The sealing spring is disposed outside the sliding rod, and the end of the sealing spring away from the push block is fixedly connected to one side of the sealing spring. A sealing gasket is fixedly connected to the side of the sealing plate near the ventilation box.

[0008] Preferably, the filter plate is slidably connected to both sides, the limiting plate is fixedly connected to the inside of the ventilation box near the bottom, and the limiting plate is provided with a sliding groove near the load-bearing block, and the sliding block is slidably connected inside the sliding groove.

[0009] Preferably, a lifting rod is fixedly connected to the bottom of the load-bearing block near the center position. The lifting rod is disposed inside one of the lifting springs, and the end of the lifting rod away from the load-bearing block is slidably connected to the bottom of the ventilation box.

[0010] Preferably, an air intake is provided on one side of the ventilation box, a rotating rod is rotatably connected inside the air intake, and a fan blade is fixedly connected to the outside of the rotating rod. The fan blades are arranged in a circumferential array outside the rotating rod and are rotatably connected inside the air intake. A drive component is provided at the end of the rotating rod away from the fan blades.

[0011] Preferably, the drive assembly includes a driven bevel gear, which is fixedly connected to the end of the rotating rod away from the fan blade. A drive bevel gear meshes with the top of the driven bevel gear, and a drive rod is fixedly connected to the top of the drive bevel gear. The drive rod is rotatably connected to the inside of the ventilation box near the top. A motor is fixedly connected to the top of the ventilation box, and the drive rod is fixedly connected to the output end of the motor.

[0012] This invention provides a safety ventilation device for a chemical batching room. Compared with the prior art, it has the following advantages:

[0013] 1. This safety ventilation device in the chemical batching room uses a filter plate to adsorb impurities. When the filter plate decreases in weight, it causes the load-bearing block and sliding block to squeeze the lifting spring. This causes the sealing spring to push the push block to drive the sliding rod and sealing plate to close and seal, achieving a rapid closure effect. This solves the problem that manual maintenance cannot guarantee the timely replacement of filter plates that need to be replaced, resulting in the exhaust gas not meeting the standards. It also increases the rapid closure effect.

[0014] 2. The safety ventilation device in this chemical batching room ensures the smooth lifting of the filter plate by raising and lowering the load-bearing block inside the limit plate. The load-bearing block will squeeze the lifting rod to protrude, thus allowing the filter plate to be detected as soon as it needs to be replaced. This solves the problem of filter plates being difficult to observe and replace, and improves the convenience of detecting whether the filter plate needs to be replaced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0019] Figure 5 This is a cross-sectional structural diagram of the ventilation box of this utility model.

[0020] In the diagram: 1. Ventilation box; 2. Filter plate; 3. Load-bearing block; 4. Lifting spring; 5. Sliding block; 6. Pushing block; 7. Sliding rod; 8. Ventilation hole; 9. Sealing plate; 10. Sealing spring; 11. Sealing gasket; 12. Limiting plate; 13. Sliding groove; 14. Lifting rod; 15. Air intake; 16. Rotating rod; 17. Fan blade; 18. Driven bevel gear; 19. Drive bevel gear; 20. Drive rod; 21. Motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5This utility model provides a technical solution: a safety ventilation device for a chemical batching room, including a ventilation box 1. A filter plate 2 is slidably connected to the top of the ventilation box 1, and a load-bearing block 3 abuts against the bottom of the filter plate 2. A lifting spring 4 is fixedly connected to the bottom of the load-bearing block 3. Multiple sets of lifting springs 4 are arranged in a linear array inside the ventilation box 1 near the bottom. A sliding block 5 is fixedly connected to one side of the filter plate 2. The sliding block 5 is arranged in an inverted "L" shape. A pushing block 6 abuts against the side of the sliding block 5 away from the load-bearing block 3. A sliding rod 7 is fixedly connected to the side of the pushing block 6 away from the sliding block 5. A sealing plate 9 is fixedly connected to the end of the sliding rod 7 away from the pushing block 6. The ventilation box 1 is close to... A ventilation hole 8 is provided on one side of the load-bearing block 3. A closing component is provided on the side of the push block 6 away from the sliding block 5. The closing component includes a sealing spring 10, which is fixedly connected to one side of the push block 6. The sealing spring 10 is located outside the sliding rod 7. The end of the sealing spring 10 away from the push block 6 is fixedly connected to one side of the sealing spring 10. A sealing gasket 11 is fixedly connected to the side of the sealing plate 9 near the ventilation box 1. Limiting plates 12 are slidably connected to both sides of the filter plate 2. The limiting plates 12 are fixedly connected to the inside of the ventilation box 1 near the bottom. A sliding groove 13 is provided on the limiting plate 12 near the load-bearing block 3. The sliding block 5 is slidably connected inside the sliding groove 13.

[0023] During operation, when filter plate 2 is adsorbed inside ventilation box 1, its weight increases. This causes filter plate 2 to press against the load-bearing block 3 and the lifting spring 4, allowing the lifting spring 4 to slide between the limiting plates 12. Meanwhile, the sliding block 5 slides within the sliding groove 13, allowing it to disengage from the pushing block 6. The sealing spring 10 then pushes the pushing block 6, causing it to move the sliding rod 7 and the sealing plate 9. This causes the sealing plate 9 to engage with the sealing spring 10 and close the ventilation box 1, preventing air from escaping through the ventilation hole 8. At this point, ventilation box 1 will no longer allow air to pass through, allowing filter plate 2 to be replaced. During replacement, the sealing plate 9 is pulled, inserting filter plate 2 between the limiting plates 12. Releasing the sealing plate 9 then allows gas to escape through ventilation box 1 and ventilation hole 8, achieving a rapid closure effect. This solves the problem of manual maintenance failing to ensure timely replacement of filter plates, resulting in non-compliant exhaust gas, and enhances the rapid closure effect.

[0024] A lifting rod 14 is fixedly connected to the bottom of the load-bearing block 3 near the center. The lifting rod 14 is located inside one of the lifting springs 4. The end of the lifting rod 14 away from the load-bearing block 3 is slidably connected to the bottom of the ventilation box 1. An air intake 15 is opened on one side of the ventilation box 1. A rotating rod 16 is rotatably connected inside the air intake 15. A fan blade 17 is fixedly connected to the outside of the rotating rod 16. There are multiple sets of fan blades 17 arranged in a circumferential array outside the rotating rod 16. The fan blades 17 are rotatably connected to the inside of the air intake 15. A drive assembly is provided at the end of the rotating rod 16 away from the fan blade 17. The drive assembly includes a driven bevel gear 18, which is fixedly connected to the end of the rotating rod 16 away from the fan blade 17. A drive bevel gear 19 meshes with the top of the driven bevel gear 18. A drive rod 20 is fixedly connected to the top of the drive bevel gear 19. The drive rod 20 is rotatably connected to the inside of the ventilation box 1 near the top. A motor 21 is fixedly connected to the top of the ventilation box 1. The drive rod 20 is fixedly connected to the output end of the motor 21.

[0025] During operation, when the load-bearing block 3 is compressed and lowered, it will cause the lifting rod 14 to slide along the inside of the ventilation box 1. After the filter plate 2 has absorbed enough gas, the lifting rod 14 will protrude from the ventilation box 1, allowing the staff to see that the filter plate 2 needs to be replaced. When filtering gas, the motor 21 can be started, which will drive the drive rod 20 to rotate. The drive rod 20 will drive the drive bevel gear 19 to rotate, which will drive the driven bevel gear 18. The driven bevel gear 18 will drive the rotating rod 16 to rotate inside the air intake 15. The rotating rod 16 will also drive the fan blade 17 to rotate inside the air intake 15, so that the gas is drawn in from one end of the ventilation box 1 through the air intake 15, filtered by the filter plate 2, and then discharged through the ventilation hole 8. This achieves the effect of rapid filtration by the filter plate 2, solves the problem of poor gas intake effect caused by the filter plate 2 alone, and improves the adsorption effect of the filter plate 2.

[0026] During operation or use, when filter plate 2 is adsorbed inside ventilation box 1, its weight increases. This causes filter plate 2 to press against the load-bearing block 3 and the lifting spring 4, allowing the lifting spring 4 to slide between the limiting plates 12. Meanwhile, the sliding block 5 slides within the sliding groove 13, allowing it to disengage from the pushing block 6. The sealing spring 10 then pushes the pushing block 6, causing it to move the sliding rod 7 and the sealing plate 9. This causes the sealing plate 9 to engage with the sealing spring 10 and close against ventilation box 1, preventing air from venting through the ventilation hole 8. At this point, ventilation box 1 will no longer allow airflow, and filter plate 2 can be replaced. During replacement, pull the sealing plate 9 to insert filter plate 2 between the limiting plates 12, then release the sealing plate 9. This allows gas to escape through ventilation box 1 and ventilation hole 8, achieving a rapid closure effect. This solves the problem that manual maintenance cannot guarantee timely replacement of filter plates, leading to non-compliant exhaust gas. This design enhances the rapid closing effect. When the load-bearing block 3 is compressed and lowered, it drives the lifting rod 14 to slide along the inside of the ventilation box 1. After the filter plate 2 has absorbed enough gas, the lifting rod 14 will protrude from the ventilation box 1, allowing staff to see that the filter plate 2 needs to be replaced. When filtering gas, the motor 21 can be started, which will drive the drive rod 20 to rotate. The drive rod 20 will drive the drive bevel gear 19 to rotate, which in turn drives the driven bevel gear 18. The driven bevel gear 18 will then drive the rotating rod 16 to rotate inside the air intake 15. The rotating rod 16 will also drive the fan blade 17 to rotate inside the air intake 15, allowing gas to be drawn in from one end of the ventilation box 1 through the air intake 15, filtered by the filter plate 2, and then discharged through the ventilation hole 8. This achieves the effect of rapid filtration by the filter plate 2, solving the problem of poor gas intake caused by the filter plate 2 alone, and improving the adsorption effect of the filter plate 2.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety ventilation device for a chemical batching room, comprising a ventilation box (1), characterized in that: A filter plate (2) is slidably connected to the top of the ventilation box (1). A load-bearing block (3) is abutted to the bottom of the filter plate (2). A lifting spring (4) is fixedly connected to the bottom of the load-bearing block (3). Multiple sets of lifting springs (4) are arranged in a linear array inside the ventilation box (1) near the bottom. A sliding block (5) is fixedly connected to one side of the filter plate (2). The sliding block (5) is arranged in an inverted "L" shape. A pushing block (6) is abutted to the side of the sliding block (5) away from the load-bearing block (3). A sliding rod (7) is fixedly connected to the side of the pushing block (6) away from the sliding block (5). A sealing plate (9) is fixedly connected to the end of the sliding rod (7) away from the pushing block (6). A ventilation hole (8) is opened on the side of the ventilation box (1) near the load-bearing block (3). A closing component is provided on the side of the pushing block (6) away from the sliding block (5).

2. The safety ventilation device for a chemical batching room according to claim 1, characterized in that: The closing assembly includes a sealing spring (10), which is fixedly connected to one side of the push block (6). The sealing spring (10) is disposed outside the sliding rod (7). The end of the sealing spring (10) away from the push block (6) is fixedly connected to one side of the sealing spring (10). A sealing gasket (11) is fixedly connected to the side of the sealing plate (9) near the ventilation box (1).

3. A safety ventilation device for a chemical batching room according to claim 2, characterized in that: The filter plate (2) is slidably connected to the limiting plate (12) on both sides. The limiting plate (12) is fixedly connected to the inside of the ventilation box (1) near the bottom. The limiting plate (12) is provided with a sliding groove (13) near the load-bearing block (3). The sliding block (5) is slidably connected inside the sliding groove (13).

4. A safety ventilation device for a chemical batching room according to claim 3, characterized in that: The bottom of the load-bearing block (3) is fixedly connected to a lifting rod (14) near the center. The lifting rod (14) is located inside one of the lifting springs (4). The end of the lifting rod (14) away from the load-bearing block (3) is slidably connected to the bottom of the ventilation box (1).

5. A safety ventilation device for a chemical batching room according to claim 4, characterized in that: The ventilation box (1) has an air intake (15) on one side. A rotating rod (16) is rotatably connected inside the air intake (15). A fan blade (17) is fixedly connected outside the rotating rod (16). There are multiple sets of fan blades (17) arranged in a circular array outside the rotating rod (16). The fan blades (17) are rotatably connected inside the air intake (15). A drive assembly is provided at the end of the rotating rod (16) away from the fan blades (17).

6. A safety ventilation device for a chemical batching room according to claim 5, characterized in that: The drive assembly includes a driven bevel gear (18), which is fixedly connected to the end of the rotating rod (16) away from the fan blade (17). The driven bevel gear (18) is meshed with a drive bevel gear (19) at the top. The drive bevel gear (19) is fixedly connected to a drive rod (20) at the top. The drive rod (20) is rotatably connected to the inside of the ventilation box (1) near the top. The top of the ventilation box (1) is fixedly connected to a motor (21), and the drive rod (20) is fixedly connected to the output end of the motor (21).

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