Based on safety ventilation devices for chemical workshops

Abstract

This utility model belongs to the field of chemical workshops, specifically a safety ventilation device for chemical workshops. It includes casters, with a base fixedly connected to the top of each caster. A rotating component is mounted on the top of the base, and a lifting component is mounted on the outside of the rotating component. The lifting component includes a support rod fixedly connected to the top of the base. This utility model uses the rotating component to drive a reciprocating screw, causing a gear to rotate outside the gear ring, which in turn drives the reciprocating screw to rotate. This, in turn, drives a transmission block to move up and down, which in turn moves an external threaded tube, thereby moving a filter screen and simultaneously moving an extraction hose up and down. This changes the height and range of the extraction, allowing for the extraction of waste gas from different locations and a wider area, thus ensuring the cleanliness of the chemical workshop and reducing the potential harm to workers caused by waste gas.

Description

Technical Field

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

[0002] Chemical industry is an abbreviation for "chemical process", "chemical industry", "chemical engineering", etc. Any technology that uses chemical methods to change the composition or structure of substances or synthesize new substances falls under the category of chemical production technology, also known as chemical process. The resulting products are called chemicals or chemical products.

[0003] When processing chemical products, it is necessary to exhaust the air inside the chemical workshop. Although the ventilation devices currently in use can be moved as a whole to extract and filter air from different locations, their ventilation direction is fixed and they can only extract air within a certain range at the same height. However, there are many types of chemical products nowadays, and the density of the exhaust gases varies. This causes the exhaust gases to rise and sink after entering the chemical workshop. As a result, ventilation devices that can only extract air within a certain range at the same height cannot effectively extract and filter the exhaust gases, leaving a lot of exhaust gases inside the chemical workshop, which can continuously cause harm to the health of workers.

[0004] Therefore, a safety ventilation device for chemical workshops is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies and solve the problem of varying density of exhaust gases from diverse chemical products entering chemical workshops, which causes gases to rise and sink, ventilation devices that can only extract air from a certain range at the same height are ineffective at filtering exhaust gases. This results in a significant amount of exhaust gas remaining inside the chemical workshop, causing continuous harm to workers. This utility model proposes a safety ventilation device for chemical workshops.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The safety ventilation device for chemical workshops described in this utility model includes a caster wheel, a base fixedly connected to the top of the caster wheel, a rotating component on the top of the base, a lifting component on the outside of the rotating component, a support rod fixedly connected to the top of the base, a gear ring fixedly connected to the top of the support rod, a gear meshing on the outside of the gear ring, a reciprocating screw fixedly connected inside the gear, a support plate rotatably connected to the bottom of the reciprocating screw, a third sliding rod fixedly connected to the bottom of the support plate, the outside of the third sliding rod slidably connected to the inside of the base, a transmission block threadedly connected to the outside of the reciprocating screw, an external threaded pipe fixedly connected to the outside of the transmission block, and a filter screen fixedly connected inside the external threaded pipe.

[0007] Preferably, the rotating assembly further includes a motor fixedly connected to the top of the base, a transmission rod fixedly connected to the transmission end of the motor, a mounting base fixedly connected to the top of the transmission rod, a second sliding rod fixedly connected to the bottom of the mounting base, the outer side of the second sliding rod being slidably connected to the inside of the base, a ventilation machine fixedly connected to the outer side of the mounting base, a PLC control device fixedly connected to the top of the ventilation machine, the PLC control device being electrically connected to the motor, an exhaust hose fixedly connected to the top of the ventilation machine, an exhaust hose fixedly connected to the outer side of the ventilation machine, a sliding rod slidably connected to the outer side of the exhaust hose, and the outer side of the sliding rod being rotatably connected to the inside of the mounting base.

[0008] Preferably, the rotating assembly further includes a transmission plate fixedly connected to the outside of the transmission rod, the top of the transmission plate being fixedly connected to the bottom of the mounting base, and a first sliding rod being fixedly connected to the bottom of the transmission plate, the outside of the first sliding rod being slidably connected to the inside of the base.

[0009] Preferably, an extension assembly is provided on the outside of the externally threaded tube. The extension assembly includes a threaded sleeve that is threadedly connected to the outside of the externally threaded tube. A first extraction tube is fixedly connected to the outside of the threaded sleeve, and a slide bar is fixedly connected inside the first extraction tube.

[0010] Preferably, the extension assembly further includes a slip ring slidably connected inside the first extraction tube, the inside of the slip ring being slidably connected to the outside of the slide bar, and the outside of the slip ring being fixedly connected to a second extraction tube, the second extraction tube passing through the first extraction tube and being slidably connected.

[0011] Preferably, the slip ring is provided with a limiting component, the limiting component including a limiting plate slidably connected inside the slip ring, a limiting post fixedly connected to the outside of the limiting plate, the limiting post passing through the slip ring and slidably connected, and a spring fixedly connected between the limiting plate and the slip ring.

[0012] Preferably, the transmission block is penetrated and fixedly connected by an air extraction hose, the outer side of the transmission block is slidably connected to the inside of the mounting base, the reciprocating screw penetrates the mounting base and is rotatably connected, and the top of the support plate is fixedly connected to the bottom of the mounting base.

[0013] The advantages of this utility model are:

[0014] 1. This utility model uses a rotating component to drive a reciprocating screw, which in turn causes the gear to rotate outside the gear ring, thereby driving the reciprocating screw to rotate. This, in turn, drives the transmission block to move up and down, which in turn drives the external threaded tube to move, thereby driving the filter screen to move, and simultaneously driving the suction hose to move up and down. This changes the height and range of the suction, allowing for the extraction of waste gas from different locations and a wider range of waste gas, thus ensuring the cleanliness of the chemical workshop and reducing the possibility of waste gas causing harm to workers.

[0015] 2. This utility model uses pressing of the limiting post to move the limiting plate, thereby compressing the spring. Subsequently, the second extraction tube can be moved. When the second extraction tube moves to the designated position, the spring can drive the limiting post to move, so that the limiting post passes through the first extraction tube, thereby restricting the position of the second extraction tube. This, together with the first extraction tube, allows for the extraction of exhaust gas over a larger area. The slider can restrict the position of the slip ring, thus preventing the second extraction tube from rotating. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall side view structure in Embodiment 1;

[0018] Figure 2 This is a schematic diagram of the overall top view structure in Embodiment 1;

[0019] Figure 3 This is a side view diagram of the disassembled structure of some components in Embodiment 1;

[0020] Figure 4 As in Example 1 Figure 3 Enlarged structural diagram of area A in the middle;

[0021] Figure 5 This is a schematic diagram of the disassembled structure of some components in Embodiment 2;

[0022] Figure 6 This is a schematic diagram of the internal component breakdown structure in Embodiment 2.

[0023] In the diagram: 1. Caster wheel; 2. Base; 3. Motor; 4. Transmission rod; 5. Transmission plate; 6. First sliding rod; 7. Mounting seat; 8. Ventilation machine; 9. PLC control device; 10. Exhaust hose; 11. Extraction hose; 12. Sliding roller; 13. Transmission block; 14. External threaded pipe; 15. Filter screen; 16. Reciprocating screw; 17. Gear; 18. Support plate; 19. Gear ring; 20. Support rod; 21. Second sliding rod; 22. Third sliding rod; 23. Threaded sleeve; 24. First extraction pipe; 25. Sliding bar; 26. Slip ring; 27. Second extraction pipe; 28. Limiting plate; 29. ​​Limiting post; 30. Spring. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] Please see Figure 1-4 As shown, a safety ventilation device for chemical workshops includes casters 1, a base 2 fixedly connected to the top of casters 1, a rotating assembly on the top of base 2, and a lifting assembly on the outside of the rotating assembly. The lifting assembly includes a support rod 20 fixedly connected to the top of base 2, a gear ring 19 fixedly connected to the top of support rod 20, a gear 17 meshing on the outside of gear ring 19, a reciprocating screw 16 fixedly connected inside gear 17, a support plate 18 rotatably connected to the bottom of reciprocating screw 16, a third sliding rod 22 fixedly connected to the bottom of support plate 18, the outside of the third sliding rod 22 slidably connected to the inside of base 2, a transmission block 13 threadedly connected to the outside of reciprocating screw 16, an external threaded pipe 14 fixedly connected to the outside of transmission block 13, and a filter screen 15 fixedly connected inside the external threaded pipe 14.

[0027] During operation, the rotating assembly drives the reciprocating screw 16 to move, thereby causing the gear 17 to rotate outside the gear ring 19, which in turn drives the reciprocating screw 16 to rotate, thereby driving the transmission block 13 to move up and down, which in turn drives the external threaded tube 14 to move, thereby driving the filter screen 15 to move, and at the same time driving the exhaust hose 11 to move up and down, thereby changing the height and range of the exhaust, so that exhaust gas from different locations can be extracted, thus extracting exhaust gas from a wider area, thereby ensuring the cleanliness of the chemical workshop and reducing the possibility of exhaust gas causing harm to the health of workers.

[0028] The rotating assembly also includes a motor 3 fixedly connected to the top of the base 2. A transmission rod 4 is fixedly connected to the transmission end of the motor 3. A mounting base 7 is fixedly connected to the top of the transmission rod 4. A second sliding rod 21 is fixedly connected to the bottom of the mounting base 7. The outer side of the second sliding rod 21 is slidably connected to the inside of the base 2. A ventilation machine 8 is fixedly connected to the outer side of the mounting base 7. A PLC control device 9 is fixedly connected to the top of the ventilation machine 8. The PLC control device 9 is electrically connected to the motor 3. An exhaust hose 10 is fixedly connected to the top of the ventilation machine 8. An exhaust hose 11 is fixedly connected to the outer side of the ventilation machine 8. A sliding rod 12 is slidably connected to the outer side of the exhaust hose 11. The outer side of the sliding rod 12 is rotatably connected to the inside of the mounting base 7.

[0029] During operation, the motor 3 drives the transmission rod 4 to rotate, which in turn drives the mounting base 7 to rotate, which in turn drives the ventilation machine 8 to rotate, thereby driving the air extraction hose 11 to rotate, thus changing the position of the air extraction and allowing for the extraction of exhaust gas from a wider area.

[0030] The rotating assembly also includes a transmission plate 5 fixedly connected to the outside of the transmission rod 4. The top of the transmission plate 5 is fixedly connected to the bottom of the mounting base 7. A first sliding rod 6 is fixedly connected to the bottom of the transmission plate 5. The outside of the first sliding rod 6 is slidably connected to the inside of the base 2.

[0031] During operation, the rotation of the transmission rod 4 drives the transmission plate 5 to rotate, thereby transmitting power to the mounting base 7, which in turn drives the mounting base 7 to rotate.

[0032] The transmission block 13 is penetrated and fixedly connected by the air extraction hose 11. The outer side of the transmission block 13 is slidably connected to the inside of the mounting base 7. The reciprocating screw 16 penetrates the mounting base 7 and is rotatably connected. The top of the support plate 18 is fixedly connected to the bottom of the mounting base 7.

[0033] During operation, the transmission block 13 is connected to the suction hose 11, which allows the transmission block 13 to drive the suction hose 11 to move, thereby extracting exhaust gas at different heights.

[0034] Example 2

[0035] Please see Figure 5-6As shown in the first embodiment, as another implementation of the present invention, an extension component is provided on the outside of the external threaded tube 14. The extension component includes a threaded sleeve 23 that is threadedly connected to the outside of the external threaded tube 14. A first extraction tube 24 is fixedly connected to the outside of the threaded sleeve 23. A slide bar 25 is fixedly connected inside the first extraction tube 24.

[0036] The extension assembly also includes a slip ring 26 slidably connected inside the first extraction tube 24. The inside of the slip ring 26 is slidably connected to the outside of the slide bar 25. The outside of the slip ring 26 is fixedly connected to a second extraction tube 27, which passes through the first extraction tube 24 and is slidably connected.

[0037] During operation, by pulling the second extraction pipe 27, the second extraction pipe 27 is moved, thereby working with the first extraction pipe 24 to extract exhaust gas over a larger area. The slide bar 25 can restrict the position of the slip ring 26, thus preventing the second extraction pipe 27 from rotating.

[0038] When the second extraction tube 27 is fully retracted into the first extraction tube 24, the extraction holes of the second extraction tube 27 and the first extraction tube 24 coincide.

[0039] The slip ring 26 is provided with a limiting component, which includes a limiting plate 28 that is slidably connected inside the slip ring 26, a limiting post 29 that is fixedly connected to the outside of the limiting plate 28, the limiting post 29 passing through the slip ring 26 and slidably connected, and a spring 30 that is fixedly connected between the limiting plate 28 and the slip ring 26.

[0040] During operation, pressing the limiting post 29 moves the limiting plate 28, which in turn compresses the spring 30. Subsequently, the second extraction tube 27 can be moved. When the second extraction tube 27 moves to the designated position, the spring 30 can move the limiting post 29, so that the limiting post 29 passes through the first extraction tube 24, thereby restricting the position of the second extraction tube 27.

[0041] The working principle is as follows: the motor 3 drives the transmission rod 4 to rotate, which in turn drives the mounting base 7 to rotate, which in turn drives the ventilation machine 8 to rotate, thereby driving the suction hose 11 to rotate. At the same time, the gear 17 rotates outside the gear ring 19, which in turn drives the reciprocating screw 16 to rotate, thereby driving the transmission block 13 to move up and down, which in turn drives the external threaded pipe 14 to move, thereby driving the filter screen 15 to move, and at the same time driving the suction hose 11 to move up and down, thus changing the height and range of the suction. This allows for the extraction of waste gas from different locations, thus enabling the extraction of waste gas from a wider area, ensuring the cleanliness of the chemical workshop and reducing the possibility of waste gas causing harm to the health of workers.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A safety ventilation device for chemical workshops, including casters (1), wherein a base (2) is fixedly connected to the top of the casters (1); characterized in that The base (2) is provided with a rotating component on the top and a lifting component on the outside of the rotating component. The lifting component includes a support rod (20) fixedly connected to the top of the base (2). A gear ring (19) is fixedly connected to the top of the support rod (20). A gear (17) meshes with the outside of the gear ring (19). A reciprocating screw (16) is fixedly connected inside the gear (17). The bottom of the reciprocating screw (16) is rotatably connected to a support plate (18), and the bottom of the support plate (18) is fixedly connected to a third sliding rod (22). The outer side of the third sliding rod (22) is slidably connected to the inside of the base (2). The outer side of the reciprocating screw (16) is threadedly connected to a transmission block (13), and the outer side of the transmission block (13) is fixedly connected to an external threaded tube (14). The inside of the external threaded tube (14) is fixedly connected to a filter screen (15).

2. The safety ventilation device for a chemical plant according to claim 1, wherein: The rotating assembly also includes a motor (3) fixedly connected to the top of the base (2). The transmission end of the motor (3) is fixedly connected to a transmission rod (4). The top of the transmission rod (4) is fixedly connected to a mounting base (7). The bottom of the mounting base (7) is fixedly connected to a second sliding rod (21). The outer side of the second sliding rod (21) is slidably connected to the inside of the base (2). The outer side of the mounting base (7) is fixedly connected to a ventilation machine (8). The top of the ventilation machine (8) is fixedly connected to a PLC control device (9). The PLC control device (9) is electrically connected to the motor (3). The top of the ventilation machine (8) is fixedly connected to an exhaust hose (10). The outer side of the ventilation machine (8) is fixedly connected to an exhaust hose (11). The outer side of the exhaust hose (11) is slidably connected to a sliding rod (12). The outer side of the sliding rod (12) is rotatably connected to the inside of the mounting base (7).

3. The safety ventilation device for a chemical plant according to claim 2, wherein: The rotating assembly also includes a transmission plate (5) fixedly connected to the outside of the transmission rod (4). The top of the transmission plate (5) is fixedly connected to the bottom of the mounting base (7). A first sliding rod (6) is fixedly connected to the bottom of the transmission plate (5). The outside of the first sliding rod (6) is slidably connected to the inside of the base (2).

4. The safety ventilation device for a chemical plant according to claim 1, wherein: An extension assembly is provided on the outside of the external threaded tube (14). The extension assembly includes a threaded sleeve (23) threaded to the outside of the external threaded tube (14). A first extraction tube (24) is fixedly connected to the outside of the threaded sleeve (23). A slide bar (25) is fixedly connected inside the first extraction tube (24).

5. The safety ventilation device for a chemical plant according to claim 4, wherein: The extension assembly also includes a slip ring (26) slidably connected inside the first extraction tube (24). The inside of the slip ring (26) is slidably connected to the outside of the slide bar (25). The outside of the slip ring (26) is fixedly connected to a second extraction tube (27). The second extraction tube (27) passes through the first extraction tube (24) and is slidably connected.

6. The safety ventilation device for a chemical plant according to claim 5, wherein: The slip ring (26) is provided with a limiting component inside. The limiting component includes a limiting plate (28) slidably connected inside the slip ring (26). A limiting post (29) is fixedly connected to the outside of the limiting plate (28). The limiting post (29) passes through the slip ring (26) and is slidably connected. A spring (30) is fixedly connected between the limiting plate (28) and the slip ring (26).

7. The safety ventilation device for a chemical plant according to claim 1, wherein: The transmission block (13) is penetrated and fixedly connected by the air extraction hose (11). The outer side of the transmission block (13) is slidably connected to the inside of the mounting base (7). The reciprocating screw (16) penetrates the mounting base (7) and is rotatably connected. The top of the support plate (18) is fixedly connected to the bottom of the mounting base (7).

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