Chemical raw material dust absorption device

Abstract

The application provides a chemical raw material dust absorption device, and relates to the field of dust absorption, which comprises a main air pipe, a plurality of branch air pipes are connected to the bottom of the main air pipe, a self-adapting valve assembly is arranged on the inner side of the branch air pipe, a dust bin in a spherical shape is connected to the other end of the branch air pipe, a venturi pipe is arranged below the dust bin, a transmission assembly for providing power is arranged on the outer side of the throat of the venturi pipe, the transmission assembly is connected with the valve assembly, and the transmission assembly comprises a piston penetrating through the throat of the venturi pipe. The linkage structure of the venturi pipe, the piston, the transmission assembly and the self-adapting valve assembly is arranged, the intelligent distribution of the system air volume is realized, and the energy consumption is significantly reduced. When the dust concentration of a dust production point increases, the airflow velocity of the throat of the venturi pipe is accelerated, the static pressure is reduced, the piston and the transmission shaft are driven to move under the action of the pressure difference, the air valve is automatically opened, and the air volume of the branch is increased.

Description

Technical Field

[0001] This invention relates to the field of dust absorption, and more specifically, to a dust absorption device for chemical raw materials. Background Technology

[0002] In the field of chemical raw material dust absorption, existing technologies generally employ fixed-volume fan drives combined with traditional filtration or wet dust collection devices. While these technologies can achieve basic purification functions, they have significant shortcomings in terms of energy conservation and environmental protection. First, energy consumption remains high, as the fans typically operate continuously at rated power and cannot automatically adjust the airflow based on real-time changes in dust concentration at each dust-generating point, resulting in substantial wasted energy. Second, the dust removal process relies on timed pulse jet cleaning, which consumes a large amount of compressed air and easily causes excessive wear on the filter media, increasing energy consumption and maintenance costs, and generating solid waste such as discarded filter cartridges. Third, the collected dust is mostly treated as waste, failing to achieve closed-loop automatic recovery of valuable raw materials, leading to resource waste and the risk of secondary pollution. Furthermore, the explosion-proof design of existing devices largely relies on passive safety components such as explosion vents, lacking an active prevention mechanism against explosion risks.

[0003] Therefore, we have made improvements to this and proposed a chemical raw material dust absorption device. Summary of the Invention

[0004] The purpose of this invention is to address the current problem of high energy consumption, where fans typically operate continuously at rated power and cannot automatically adjust airflow based on real-time changes in dust concentration at various dust-generating points, resulting in significant energy waste.

[0005] To achieve the above-mentioned objectives, the present invention provides a chemical raw material dust absorption device to improve the aforementioned problems.

[0006] The application is as follows:

[0007] The system includes a main air pipe, with several branch pipes connected to the bottom of the main air pipe. The branch pipes are bent, and an adaptive valve assembly is provided on the inner side of each branch pipe. The other end of each branch pipe is connected to a spherical dust chamber. A venturi tube is provided below the dust chamber, and a transmission assembly for providing power is provided on the outer side of the throat of the venturi tube. The transmission assembly is connected to the valve assembly. The transmission assembly includes a piston that passes through the throat of the venturi tube. In the initial state, the piston slightly protrudes into the interior of the venturi tube. A first drive shaft is fixedly installed on the top of the piston. The first drive shaft passes through the branch pipe and is connected to the valve assembly. The connection between the first drive shaft and the branch pipe is through a preset sealing seat.

[0008] As a preferred technical solution of this application, the transmission assembly further includes a mounting seat fixedly installed on the outside of the venturi tube. The inner side of the mounting seat is provided with an inwardly recessed connecting groove, and a sealing ring is fixedly installed on the mounting seat through the connecting groove. The mounting seat is sleeved on the outside of the piston through the sealing ring. The sealing ring facilitates the sealing of the venturi tube and the mounting seat during the reciprocating motion of the piston.

[0009] As a preferred technical solution of this application, a return spring is fixedly installed on the top of the piston, and the return spring is sleeved on the outside of the first transmission shaft, the first transmission shaft extends through the mounting base to its outside, and the top of the return spring is connected to the inside of the mounting base.

[0010] As a preferred technical solution of this application, the outer side of the mounting base is connected to a bent connecting air pipe, and the other end of the connecting air pipe is connected to the air inlet end of the venturi tube. The end of the connecting air pipe is higher than the top of the piston. An elastic cloth is fixedly installed on the top of the mounting base, and the top of the elastic cloth is fixedly connected to the outer side of the first drive shaft.

[0011] As a preferred technical solution of this application, the valve assembly includes a wind valve that is rotatably sleeved inside the bronchus. In the initial state, the wind valve is in a horizontal or slightly tilted state. A connecting ball rod is rotatably sleeved on one side of the bottom of the wind valve, and the bottom of the connecting ball rod is spherically sleeved with the top of the first transmission shaft.

[0012] As a preferred technical solution of this application, the side wall of the first drive shaft is provided with a slot, and the slot is located in the inner cavity of the bronchus. A triangular plate is provided at intervals on one side of the first drive shaft, and a telescopic shaft is fixedly installed on the side of the triangular plate away from the first drive shaft. An installation plate fixedly connected to the inner side of the bronchus is sleeved on the outer side of the telescopic shaft.

[0013] As a preferred technical solution of this application, a sleeve shaft is sleeved on the outer side of the telescopic shaft away from the triangular plate. A compression spring is fixedly installed on one end of the telescopic shaft and fixedly connected to the inner side of the sleeve shaft. The compression spring facilitates the extension of the rotation angle of the rotating plate and provides buffering when the triangular plate is engaged, preventing the rigid connection from breaking directly when subjected to external force. A second drive shaft is rotatably sleeved on the outer side of the sleeve shaft away from the triangular plate, and a rotating plate is spherically sleeved on the other end of the second drive shaft. The rotating plate is rotatably connected to the inner wall of the dust bin, and the size of the rotating plate is the same as the size of the inner wall of the dust bin. The rotating plate is a porous plate, and the interior of the rotating plate is uniformly filled with polyester fiber adsorbent. When not filled with polyester fiber, the edge of the rotating plate is made of elastic material, and it becomes hard after being fully filled.

[0014] As a preferred technical solution of this application, the bottom of the dust chamber is sealed and hinged with a door, and a handle is fixedly installed at the bottom of the door. A spring is sleeved inside the handle, and the other end of the spring is fixedly connected to the outside of the first drive shaft. The door and handle facilitate the cleaning of dust inside the dust chamber.

[0015] As a preferred technical solution of this application, the inner side of the dust chamber is evenly distributed with locking blocks, and the locking blocks are engaged with the rotating plate. The locking blocks are located between the end of the branch pipe connected to the dust chamber and the chamber door.

[0016] As a preferred technical solution of this application, an integrated cover is fixedly installed at one end of the Venturi tube, and a bent transport pipe is fixedly installed at the other end of the Venturi tube, with the other end of the transport pipe connected to the outer side of the dust bin.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] In the scheme of this application:

[0019] 1. By setting up a linkage structure between the Venturi tube, piston, and transmission components and the adaptive valve components, the system achieves intelligent on-demand distribution of air volume, significantly reducing energy consumption. When the dust concentration at the dust generation point increases, the airflow velocity at the throat of the Venturi tube accelerates and the static pressure decreases. Under the action of pressure difference, the piston and transmission shaft are driven to move, automatically opening the air valve to increase the air volume of that branch; conversely, it automatically closes the air valve.

[0020] 2. The reset spring, connecting air tube, and elastic cloth form a stable and reliable pressure sensing and sealing system, ensuring the sensitivity and long-term effectiveness of adaptive adjustment; the connecting air tube makes the pressure at the top of the piston consistent with the pressure at the inlet end of the venturi tube, thereby forming a stable pressure difference with the throat and providing precise power for piston movement; the elastic cloth and sealing ring together form a dynamic and static double seal, which effectively prevents gas leakage while ensuring flexible piston movement.

[0021] 3. Through the set rotating plate, locking block, triangular plate and compression spring mechanism, the mechanical sensing and feedback of the dust accumulation state in the dust chamber is realized, and it has the functions of dust cleaning and anti-clogging. The dust accumulation pushes the rotating plate to engage with different locking blocks in sequence. This mechanical displacement is transmitted to the first transmission shaft through the telescopic shaft and triangular plate, which can eventually trigger the air valve to close, providing conditions for compartment cleaning. At the same time, the linkage mechanism automatically acts when the dust reaches a certain amount, avoiding the blindness of traditional timed dust cleaning, reducing ineffective compressed air consumption and equipment wear, and indirectly achieving the effects of energy saving and extending the filter material life.

[0022] 4. Through the set spring plate and bin door linkage structure, the dust bin achieves automatic anti-adhesion and auxiliary dust cleaning functions, improving maintenance convenience and environmental protection; when the piston resets, it drives the spring plate to reciprocate and vibrate to impact the handle and bin door. The vibration force generated can effectively shake off the fine dust adhering to the inner wall of the dust bin, keeping the bin clean, reducing the frequency and difficulty of manual cleaning, and avoiding the problem of increased system resistance caused by dust caking, further ensuring that the system operates in a highly efficient and energy-saving state. Attached Figure Description

[0023] Figure 1 A schematic diagram of the chemical raw material dust absorption device provided in this application;

[0024] Figure 2 A partial structural schematic diagram of the chemical raw material dust absorption device provided in this application;

[0025] Figure 3 A cross-sectional view of the connection structure of the Venturi tube in the chemical raw material dust absorption device provided in this application;

[0026] Figure 4 Exploded view of the internal structure of the mounting base for the chemical raw material dust absorption device provided in this application;

[0027] Figure 5 A cross-sectional view of the connection structure of the dust bin in the chemical raw material dust absorption device provided in this application;

[0028] Figure 6 A schematic diagram of the connection structure of the outer surface of the rotating plate of the chemical raw material dust absorption device provided in this application;

[0029] Figure 7 An exploded view of the connection structure at the bottom of the air valve of the chemical raw material dust absorption device provided in this application.

[0030] The image shows:

[0031] 1. Main air pipe; 2. Branch air pipe; 3. Dust bin; 4. Transport pipe; 5. Venturi tube; 6. Mounting base; 7. Elastic cloth; 8. Piston; 9. Connecting groove; 10. Sealing ring; 11. Return spring; 12. First drive shaft; 13. Spring; 14. Connecting air pipe; 15. Rotating plate; 16. Locking block; 17. Bin door; 18. Handle; 19. Second drive shaft; 20. Sleeve shaft; 21. Compression spring; 22. Telescopic shaft; 23. Triangular plate; 24. Locking groove; 25. Air valve; 26. Connecting ball rod; 27. Integrated cover. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0033] As described in the background section, the high energy consumption means that the fans typically operate continuously at their rated power and cannot automatically adjust the airflow according to the real-time changes in dust concentration at each dust-generating point, resulting in a large amount of wasted electricity.

[0034] To address this technical problem, the present invention provides a chemical raw material dust absorption device, which is applied to adaptively adjust dust absorption.

[0035] For details, please refer to Figure 1 - Figure 7 The chemical raw material dust absorption device specifically includes a main air pipe 1, with several branch air pipes 2 connected to the bottom of the main air pipe 1. The branch air pipes 2 are bent, and an adaptive adjustment valve assembly is provided on the inner side of the branch air pipe 2. The other end of the branch air pipe 2 is connected to a spherical dust chamber 3. A venturi tube 5 is provided below the dust chamber 3, and a transmission assembly for providing power is provided on the outer side of the throat of the venturi tube 5. The transmission assembly is connected to the valve assembly. The transmission assembly includes a piston 8 that passes through the throat of the venturi tube 5. In the initial state, the piston 8 protrudes slightly into the interior of the venturi tube 5. A first drive shaft 12 is fixedly installed on the top of the piston 8, and the first drive shaft 12 passes through the branch air pipe 2 and is connected to the valve assembly. The connection between the first drive shaft 12 and the branch air pipe 2 is connected by a preset sealing seat.

[0036] The chemical raw material dust absorption device provided by this invention achieves intelligent on-demand allocation of system air volume through the linkage structure of the Venturi tube, piston, transmission assembly and adaptive valve assembly, which significantly reduces energy consumption. When the dust concentration at the dust generation point increases, the airflow velocity at the throat of the Venturi tube increases and the static pressure decreases. Under the action of pressure difference, the piston and transmission shaft are driven to move, automatically opening the air valve to increase the air volume of that branch; conversely, it automatically closes the air valve.

[0037] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0038] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] Please refer to Figure 3 and Figure 4 A chemical raw material dust absorption device, the transmission component of which further includes a mounting base 6 fixedly installed on the outside of a venturi tube 5, the inner side of the mounting base 6 is provided with an inwardly recessed connecting groove 9, and a sealing ring 10 is fixedly installed on the mounting base 6 through the connecting groove 9. The mounting base 6 is sleeved on the outside of a piston 8 through the sealing ring 10. The sealing ring 10 facilitates the sealing of the venturi tube 5 and the mounting base 6 when the piston 8 reciprocates.

[0041] Furthermore, a return spring 11 is fixedly installed on the top of the piston 8, and the return spring 11 is sleeved on the outside of the first drive shaft 12. The first drive shaft 12 extends through the mounting base 6 to its outside, and the top of the return spring 11 is connected to the inside of the mounting base 6.

[0042] When in use, when the amount of dust produced at the air inlet of the Venturi tube 5 increases, the airflow velocity at the air inlet increases. At this time, the airflow first accelerates through the air inlet of the Venturi tube 5 until it flows to the throat of the Venturi tube 5. At this time, the air pressure at the throat continuously decreases, which in turn causes the air pressure at the bottom of the piston 8 to be much smaller than the air pressure at the top of the piston 8. Therefore, under the action of air pressure, it achieves adaptive downward movement and drives the first drive shaft 12 to move downward synchronously under the resistance of the return spring 11.

[0043] Furthermore, the outer side of the mounting base 6 is connected to a bent connecting air pipe 14, and the other end of the connecting air pipe 14 is connected to the air inlet end of the venturi tube 5. The end of the connecting air pipe 14 is higher than the top of the piston 8. An elastic cloth 7 is fixedly installed on the top of the mounting base 6, and the top of the elastic cloth 7 is fixedly connected to the outer side of the first drive shaft 12.

[0044] The mounting base 6 and the first drive shaft 12 are connected by the elastic cloth 7, thereby achieving secondary sealing of the mounting base 6. The top of the piston 8 is connected to the air inlet of the venturi tube 5 through the connecting air pipe 14, so that the air pressure at the top of the piston 8 is always the same as the air pressure at the air inlet of the venturi tube 5, thereby generating a pressure difference with the air pressure at the throat of the venturi tube 5 in real time, thus providing power to the piston 8.

[0045] Please refer to Figure 5 , Figure 6 and Figure 7A chemical raw material dust absorption device, the valve assembly of which includes a wind valve 25 rotatably sleeved inside the branch pipe 2. In the initial state, the wind valve 25 is in a horizontal or slightly inclined state. A connecting ball rod 26 is rotatably sleeved on one side of the bottom of the wind valve 25, and the bottom of the connecting ball rod 26 is spherically sleeved with the top of the first drive shaft 12.

[0046] Furthermore, a slot 24 is provided through the side wall of the first drive shaft 12, and the slot 24 is located in the inner cavity of the bronchus 2. A triangular plate 23 is provided at intervals on one side of the first drive shaft 12, and a telescopic shaft 22 is fixedly installed on the side of the triangular plate 23 away from the first drive shaft 12. An installation plate that is fixedly connected to the inner side of the bronchus 2 is sleeved on the outer side of the telescopic shaft 22.

[0047] Furthermore, a sleeve shaft 20 is sleeved on the outer side of the telescopic shaft 22 away from the triangular plate 23. A compression spring 21 is fixedly installed on one end of the telescopic shaft 22 and fixedly connected to the inner side of the sleeve shaft 20. The compression spring 21 facilitates the extension of the rotation angle of the rotating plate 15 and provides buffering when the triangular plate 23 is engaged, preventing the rigid connection from breaking directly when subjected to external force. A second drive shaft 19 is rotatably sleeved on the end of the sleeve shaft 20 away from the triangular plate 23, and the other end of the second drive shaft 19 is spherically sleeved on the rotating plate 15. The rotating plate 15 is rotatably connected to the inner wall of the dust chamber 3, and the size of the rotating plate 15 is the same as the size of the inner wall of the dust chamber 3. The rotating plate 15 is a porous plate, and the interior of the rotating plate 15 is uniformly filled with polyester fiber adsorbent. When not filled with polyester fiber, the edge of the rotating plate 15 is made of elastic material, and it has hardness after being fully filled.

[0048] In use, when the rotating plate 15 rotates, it will push the sleeve 20 and the compression spring 21 inside it to move through the second transmission shaft 19. When the compression spring 21 contracts, it will drive the telescopic shaft 22 to push the triangular plate 23 to move until the triangular plate 23 engages with the slot 24, thereby fully limiting the first transmission shaft 12. Together with the connecting ball rod 26 set on its top, it forces the air valve 25 to be in a horizontal state, thereby isolating the airflow inside the branch pipe 2, thus facilitating the cleaning of dust inside the dust chamber 3.

[0049] Furthermore, such as Figure 2 and Figure 5 As shown, a door 17 is hinged to the bottom of the inner cavity of the dust chamber 3, and a handle 18 is fixedly installed at the bottom of the door 17. A spring piece 13 is sleeved inside the handle 18, and the other end of the spring piece 13 is fixedly connected to the outside of the first drive shaft 12. The door 17 and the handle 18 facilitate the cleaning of dust inside the dust chamber 3.

[0050] When in use, when the amount of dust discharged decreases, the piston 8 resets under the combined action of air pressure and the return spring 11, and drives the first transmission shaft 12 to move. This will simultaneously drive the spring 13 to move, and under the action of the elastic properties of the spring 13, it will repeatedly strike the handle 18 and the door 17, thereby generating vibration and shaking off the dust adhering to the inner wall of the dust chamber 3.

[0051] Furthermore, the inner side of the dust chamber 3 is evenly distributed with locking blocks 16, and the locking blocks 16 are engaged with the rotating plate 15. The locking blocks 16 are located between the end of the branch pipe 2 connected to the dust chamber 3 and the chamber door 17.

[0052] During use, as dust accumulates inside the dust chamber 3, the dust continuously pushes the rotating plate 15 to rotate, thereby continuously engaging with different locking blocks 16. The evenly distributed locking blocks 16 can limit the rotation of the rotating plate 15 in real time.

[0053] Furthermore, an integrated cover 27 is fixedly installed at one end of the Venturi tube 5, and a bent transport pipe 4 is fixedly installed at the other end of the Venturi tube 5. The other end of the transport pipe 4 is connected to the outside of the dust bin 3. The transport pipe 4 facilitates the connection between the dust bin 3 and the Venturi tube 5, and the integrated cover 27 facilitates the collection of dust.

[0054] The process of using the chemical raw material dust absorption device provided by this invention is as follows:

[0055] Working principle:

[0056] The main air pipe 1 is connected to the fan. When dust is generated at a certain workstation, the dust-laden airflow is drawn into the Venturi tube 5 through the integrated cover 27. The airflow velocity is the highest and the static pressure is the lowest when it flows through the throat of the Venturi tube 5. At this time, the top of the piston 8 is connected to the high-pressure area of ​​the inlet end of the Venturi tube 5 through the connecting air pipe 14, while its bottom is subjected to the low pressure of the throat. This pressure difference generates suction on the piston 8. When the amount of dust generated increases and the airflow speed increases, the static pressure of the throat is further reduced. The suction overcomes the tension of the return spring 11 and drives the piston 8 to move towards the center of the throat. The piston 8 drives the first transmission shaft 12 to move down, and then through the lever action of the connecting ball rod 26, the air valve 25 is changed from a near-horizontal closed state to an open state, thereby increasing the air volume of this branch and achieving efficient dust collection. Conversely, when the amount of dust generated decreases, under the action of the return spring 11, each component moves in the opposite direction, the air valve 25 is closed, the air volume is reduced, and energy-saving operation is achieved by allocating according to demand.

[0057] The piston 8 is radially mounted on the throat of the venturi tube 5 via the mounting seat 6. The sealing ring 10 on it and the elastic cloth 7 form a dynamic and static double sealing system to ensure that the negative pressure is stable and there is no gas leakage when the piston 8 reciprocates in the connecting groove 9. The first drive shaft 12 passes through the branch pipe 2, and a sealing seat is provided at its connection to ensure the airflow channel is sealed.

[0058] The sucked-in dust enters the dust chamber 3 through the transport pipe 4. The spherical dust chamber 3 facilitates the dust settling and accumulating on the rotating plate 15. As the amount of dust accumulation increases, its weight forces the rotating plate 15 to rotate around the axis. The edge of the rotating plate 15 will engage with the evenly distributed locking blocks 16 on the inner wall of the dust chamber 3 in sequence. This mechanical displacement pushes the sleeve shaft 20 through the second transmission shaft 19, compressing the internal compression spring 21, and then pushes the triangular plate 23 to move laterally through the telescopic shaft 22. When the dust accumulates to a preset amount, that is, when the rotating plate 15 rotates to a specific angle, the triangular plate 23 just engages with the locking groove 24 on the first transmission shaft 12, thereby restricting the movement of the first transmission shaft 12 and indirectly locking the air valve 25 in the closed state.

[0059] During the reciprocating motion of the first drive shaft 12, the spring 13 fixed thereon drives the handle 18 on the door 17 to periodically move, causing the door 17 to generate high-frequency micro-vibration. This vibration can effectively shake off the fine dust adhering to the dust chamber 3 and the inner wall of the door 17, preventing it from caking and ensuring that the dust can be discharged smoothly through the open door 17 by gravity, which greatly reduces the difficulty of maintenance and the risk of equipment blockage.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A chemical raw material dust absorption device, characterized in that, The system includes a main air pipe (1), with several branch pipes (2) connected to the bottom of the main air pipe (1). An adaptive valve assembly is provided on the inner side of the branch pipe (2). A spherical dust chamber (3) is connected to the other end of the branch pipe (2). A venturi tube (5) is provided below the dust chamber (3). A transmission assembly for providing power is provided on the outer side of the throat of the venturi tube (5). The transmission assembly is connected to the valve assembly. The transmission assembly includes a piston (8) that passes through the throat of the venturi tube (5). A first transmission shaft (12) is fixedly installed on the top of the piston (8). The first transmission shaft (12) passes through the branch pipe (2) and is connected to the valve assembly. The valve assembly includes a wind valve (25) rotatably sleeved inside the bronchus (2), and a connecting ball rod (26) is rotatably sleeved on one side of the bottom of the wind valve (25), and the bottom of the connecting ball rod (26) is spherically sleeved with the top of the first drive shaft (12). The first drive shaft (12) has a slot (24) through its side wall, and the slot (24) is located in the inner cavity of the bronchus (2). A triangular plate (23) is provided on one side of the first drive shaft (12), and a telescopic shaft (22) is fixedly installed on the side of the triangular plate (23) away from the first drive shaft (12). The telescopic shaft (22) is sleeved on the outer side of the end away from the triangular plate (23) with a sleeve shaft (20). One end of the telescopic shaft (22) is fixedly installed with a compression spring (21) fixedly connected to the inner side of the sleeve shaft (20). The end of the sleeve shaft (20) away from the triangular plate (23) is rotatably sleeved with a second transmission shaft (19), and the other end of the second transmission shaft (19) is spherically sleeved with a rotating plate (15). The rotating plate (15) is rotatably connected to the inner wall of the dust bin (3).

2. The chemical raw material dust absorption device according to claim 1, characterized in that, The transmission assembly also includes a mounting base (6) fixedly installed on the outside of the venturi tube (5). The inner side of the mounting base (6) is provided with inwardly recessed connecting grooves (9), and the mounting base (6) is fixedly installed with a sealing ring (10) through the connecting grooves (9). The mounting base (6) is sleeved on the outside of the piston (8) through the sealing ring (10).

3. The chemical raw material dust absorption device according to claim 2, characterized in that, A return spring (11) is fixedly installed on the top of the piston (8), and the return spring (11) is sleeved on the outside of the first drive shaft (12). The first drive shaft (12) extends through the mounting base (6) to its outside. The top of the return spring (11) is connected to the inside of the mounting base (6).

4. The chemical raw material dust absorption device according to claim 2, characterized in that, The outer side of the mounting base (6) is connected to a bent connecting air pipe (14), and the other end of the connecting air pipe (14) is connected to the air inlet end of the venturi tube (5). An elastic cloth (7) is fixedly installed on the top of the mounting base (6), and the top of the elastic cloth (7) is fixedly connected to the outer side of the first drive shaft (12).

5. The chemical raw material dust absorption device according to claim 1, characterized in that, The bottom of the inner cavity of the dust chamber (3) is sealed with a door (17), and a handle (18) is fixedly installed at the bottom of the door (17). A spring piece (13) is sleeved inside the handle (18), and the other end of the spring piece (13) is fixedly connected to the outside of the first drive shaft (12).

6. The chemical raw material dust absorption device according to claim 5, characterized in that, The dust chamber (3) has evenly distributed locking blocks (16) on its inner side, and the locking blocks (16) are engaged with the rotating plate (15). The locking blocks (16) are located between the end of the bronchus pipe (2) connected to the dust chamber (3) and the chamber door (17).

7. The chemical raw material dust absorption device according to claim 1, characterized in that, One end of the Venturi tube (5) is fixedly fitted with an integrated cover (27), and the other end of the Venturi tube (5) is fixedly fitted with a bent transport pipe (4), and the other end of the transport pipe (4) is connected to the outer side of the dust bin (3).

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