Fine chemical stirring device with multi-stage filtering and exhaust gas purification functions

Abstract

The utility model relates to the field of chemical production technology discloses a fine chemical stirring device with multi-stage filtering and waste gas purification function, including the stirring jar and the jar cover of fixed installation at the top of stirring jar, be equipped with the stirring part on the jar cover, the fixed installation of discharge end of stirring jar has the valve, still include: the hopper, fixed intercommunication in the top of jar cover, be equipped with the screening element in the hopper, for filtering the impurity in raw material, be equipped with multiple elastic balls in the hopper, the utility model discloses through the setting of primary filter screen, secondary filter screen and tertiary filter screen, can carry out multi-stage filtering to the raw material of organic silica gel, thereby can significantly improve the purity, uniformity and final performance of organic silica gel product, through starting second motor, can drive elastic ball to knock primary filter screen, secondary filter screen and tertiary filter screen continuously, make the net surface vibrate, prevent raw material from being blocked, thereby improve the flowability of raw material and the screening effect of impurity.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, specifically to a fine chemical mixing device with multi-stage filtration and exhaust gas purification functions. Background Technology

[0002] Fine chemicals such as silicone are important chemical materials widely used in electronics, medical, construction, automotive and other fields. In their production process, stirring is a key process step, which aims to achieve uniform mixing of various components and ensure the stable performance of the final product.

[0003] Currently, commonly used silicone rubber mixing devices in the industry typically include a mixing tank, a drive motor, a mixing shaft, and mixing blades. During operation, raw materials such as the base polymer, fillers, crosslinking agents, and catalysts are added to the mixing tank, and mixing is achieved through the rotation of the mixing blades.

[0004] First, during the mixing process, volatile low-molecular-weight substances in the raw materials (such as solvents, unreacted monomers, etc.) and added trace additives will vaporize to form harmful waste gases. If these waste gases are directly discharged into the atmosphere, they will pollute the production environment, endanger the health of operators, and have poor environmental performance. Second, during the feeding process, impurities such as lumps, fibers, and metal shavings are often mixed into the various raw materials of silicone, especially fillers and additives. If these impurities are not effectively removed, they will also affect the purity and performance of the final product. Utility Model Content

[0005] This utility model provides a fine chemical mixing device with multi-stage filtration and exhaust gas purification functions. Through the setting of the screening element, it can perform multi-stage filtration on the raw materials of silicone, which can significantly improve the purity, uniformity and final performance of silicone products. Through the setting of the filter element, it can efficiently and deeply purify the harmful exhaust gas generated during the mixing process, thus solving the problems mentioned in the background art that traditional mixing devices cannot filter impurities in raw materials and that the exhaust gas generated during the mixing process harms the environment and workers' health.

[0006] This utility model provides the following technical solution: A fine chemical mixing device with multi-stage filtration and exhaust gas purification functions includes a mixing tank and a tank cover fixedly installed on the top of the mixing tank. The tank cover is equipped with a stirring element, and a valve is fixedly installed on the discharge end of the mixing tank. The device also includes: a feeding hopper fixedly connected to the top of the tank cover, wherein the feeding hopper is equipped with a screening element for filtering impurities in the raw materials, and the feeding hopper is equipped with multiple sets of elastic balls. The feeding hopper is equipped with a driving part for driving the elastic balls to strike the screening element; and a purification shell located on the top of the tank cover, wherein the purification shell is equipped with a filter element for purifying the exhaust gas inside the mixing tank.

[0007] As a preferred technical solution of this utility model, the screening component includes a primary filter screen, a secondary filter screen and a tertiary filter screen disposed in the feeding hopper. Multiple mounting slots are provided on both sides of the inner wall of the feeding hopper, and the primary filter screen, the secondary filter screen and the tertiary filter screen are all inserted into the mounting slots.

[0008] As a preferred embodiment of this utility model, the drive unit includes a second motor fixedly installed on the outer wall of the feeding hopper. The output shaft of the second motor extends into the feeding hopper. At least two rotating rods are rotatably connected to the feeding hopper. Each of the output shaft of the second motor and the rotating rods is fixedly connected to a pulley connected by a timing belt. One end of the output shaft of the second motor and one end of the rotating rods are fixedly connected to a wheel. An elastic ball is fixedly connected to the circumferential surface of the wheel. When the output shaft of the second motor and the rotating rods rotate, the elastic ball will continuously strike the bottom surfaces of the primary filter, the secondary filter, and the tertiary filter.

[0009] As a preferred embodiment of this utility model, the filter section includes an air supply pipe fixedly connected to the purification shell, the air inlet end of the air supply pipe being connected to the can lid, an exhaust pipe being fixedly connected to the side of the purification shell away from the air supply pipe, mounting rails being fixedly connected to both sides of the inner wall of the purification shell, a filter element being provided between the two mounting rails, a centrifugal fan being fixedly installed inside the exhaust pipe, a pressure relief valve being fixedly installed on the top of the can lid, and ultraviolet lamps being fixedly installed on both sides of the inner wall of the purification shell.

[0010] As a preferred embodiment of this utility model, the filter element includes a pre-filter layer, a fiber filter layer, an activated carbon adsorption layer, and a titanium dioxide photocatalytic layer that are slidably inserted between two mounting rails. The exhaust end of the gas supply pipe faces the pre-filter layer, the ultraviolet lamp is located inside the purification shell on the side close to the titanium dioxide photocatalytic layer, and the intake end of the centrifugal fan faces the titanium dioxide photocatalytic layer.

[0011] As a preferred embodiment of this utility model, the stirring component includes a first motor fixedly installed on the top of the tank lid, and a stirring paddle is provided inside the stirring tank. The top end of the stirring paddle is fixedly connected to the output end of the first motor.

[0012] Compared with the prior art, this utility model provides a fine chemical mixing device with multi-stage filtration and exhaust gas purification functions, which has the following beneficial effects: 1. This fine chemical mixing device with multi-stage filtration and exhaust gas purification functions can perform multi-stage filtration of silicone raw materials through the setting of primary, secondary and tertiary filters, achieving gradient interception from coarse to fine, effectively removing impurities such as lumps, fibers and metal shavings mixed in the raw materials, thereby significantly improving the purity, uniformity and final performance of silicone products.

[0013] 2. In this fine chemical mixing device with multi-stage filtration and exhaust gas purification functions, by starting the second motor, the elastic ball can continuously strike the first-stage filter screen, the second-stage filter screen and the third-stage filter screen, causing the screen surface to vibrate, thereby causing the raw materials on the screen surface to move continuously, preventing the raw materials from clogging, thereby improving the flowability of the raw materials and the screening effect of impurities.

[0014] 3. In this fine chemical mixing device with multi-stage filtration and exhaust gas purification functions, the pre-filtration layer, fiber filtration layer, activated carbon adsorption layer and titanium dioxide photocatalytic layer are set up to efficiently and deeply purify the harmful exhaust gas generated in the mixing tank during the mixing process, prevent harm to the environment and the health of operators, and thus improve the environmental protection of the device.

[0015] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model solves the problem mentioned in the background art that traditional stirring devices cannot filter impurities in raw materials, and that the waste gas generated during the stirring process harms the environment and workers' health. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional three-dimensional structural diagram of the mixing tank of this utility model; Figure 3 This is a partial exploded view of the present invention; Figure 4 This is a cross-sectional view of the feeding hopper structure of this utility model; Figure 5 This is a partial cross-sectional structural diagram of the present invention; Figure 6 This is a schematic diagram of the elastic ball testing structure of this utility model; Figure 7 This is a three-dimensional structural diagram of the purification shell of this utility model; Figure 8This is a schematic diagram of the filter element structure of this utility model.

[0018] In the diagram: 1. Mixing tank; 2. Tank lid; 21. First motor; 22. Agitator; 3. Feed hopper; 31. Mounting slot; 4. Primary filter screen; 41. Secondary filter screen; 42. Tertiary filter screen; 5. Elastic ball; 51. Second motor; 52. Rotating rod; 53. Pulley; 54. Rotary wheel; 55. Machine housing; 6. Purification shell; 61. Gas supply pipe; 62. Exhaust pipe; 63. Centrifugal fan; 64. Pressure relief valve; 7. Mounting rail; 71. Pre-filter layer; 72. Fiber filter layer; 73. Activated carbon adsorption layer; 74. Titanium dioxide photocatalytic layer; 8. Ultraviolet lamp. Detailed Implementation

[0019] 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.

[0020] Example: Reference Figures 1-8 A fine chemical mixing device with multi-stage filtration and exhaust gas purification functions includes a mixing tank 1 and a tank cover 2 fixedly installed on the top of the mixing tank 1 by bolts. The tank cover 2 is equipped with a stirring element for stirring the raw materials added to the mixing tank 1. A valve is fixedly installed on the discharge end of the mixing tank 1, and the mixed material can be discharged by opening the valve. The device also includes a feeding hopper 3, which is fixedly connected to the top of the tank cover 2. A sealing plate is hinged at the top opening of the feeding hopper 3 for flexible sealing. The feeding hopper 3 is equipped with a screening element for filtering impurities in the raw materials. The feeding hopper 3 is equipped with multiple sets of elastic balls 5, preferably 3 sets of 2 balls each. The feeding hopper 3 is equipped with a driving part for driving the elastic balls 5 to strike the screening element. A purification shell 6 is located on the top of the tank cover 2. The purification shell 6 is equipped with a filter element for purifying the exhaust gas in the mixing tank 1.

[0021] Of course, in other embodiments, the screening components in this stirring device include a primary filter 4, a secondary filter 41, and a tertiary filter 42 disposed in the feeding hopper 3. Here, the mesh size of the primary filter 4 ranges from 20 to 100 mesh, and in this device, 80 mesh is preferred. The mesh size of the secondary filter 41 ranges from 150 to 400 mesh, and in this device, 300 mesh is preferred. The mesh size of the tertiary filter 42 ranges from 700 to 1000 mesh, and in this device, 800 mesh is preferred. Multiple mounting slots 31 are provided on both sides of the inner wall of the feeding hopper 3. The number of mounting slots 31 is preferably 3. The primary filter 4, the secondary filter 41, and the tertiary filter 42 are all inserted into the mounting slots 31.

[0022] Specifically, in use, the raw materials are first added to the feeding hopper 3. The primary filter 4 can intercept large clumps, fibers, packaging debris and other macroscopic impurities. The secondary filter 41 can intercept fine powder clumps, colloidal aggregates and other medium-sized particles. The tertiary filter 42 can capture metal particles, carbides and ultrafine insoluble matter. The filtered raw materials will then enter the mixing tank 1. Through the cooperation of the primary filter 4, the secondary filter 41 and the tertiary filter 42, the raw materials of silicone can be filtered in multiple stages, achieving gradient interception from coarse to fine, effectively removing impurities such as clumps, fibers and metal shavings mixed in the raw materials, thereby significantly improving the purity, uniformity and final performance of the silicone products.

[0023] The aforementioned drive unit includes a second motor 51 fixedly mounted on the outer wall of the feeding hopper 3. The motor model can be a Panasonic A6 series or a Schneider Electric LXM32. The output shaft of the second motor 51 extends into the feeding hopper 3. At least two rotating rods 52 are rotatably connected to the feeding hopper 3. Each of the output shaft of the second motor 51 and the rotating rods 52 is fixedly connected to a pulley 53 connected by a timing belt. A rotating wheel 54 is fixedly connected to one end of the output shaft of the second motor 51 and one end of the rotating rods 52. An elastic ball 5 is fixedly connected to the circumferential surface of the rotating wheel 54. When the output shaft of the second motor 51 and the rotating rods 52 rotate, the elastic ball 5 continuously strikes the bottom surfaces of the primary filter 4, the secondary filter 41, and the tertiary filter 42. A housing 55 is detachably connected to the outer wall of the feeding hopper 3 via screws. The second motor 51 and the pulleys 53 are both located inside the housing 55, providing shielding and protection for the second motor 51 and the pulleys 53, while also improving the aesthetics of the device.

[0024] Specifically, during use, by starting the second motor 51 and driving the pulley 53, the rotating rod 52 and the rotating wheel 54 to rotate, the elastic ball 5 can continuously strike the primary filter screen 4, the secondary filter screen 41 and the tertiary filter screen 42, causing the screen surface to vibrate, thereby causing the raw material on the screen surface to move continuously, preventing the raw material from clogging, thereby improving the flowability of the raw material and the screening effect of impurities.

[0025] The aforementioned filtration unit includes an air supply pipe 61 fixedly connected to the purification shell 6. The air inlet end of the air supply pipe 61 is connected to the canister cover 2. An exhaust pipe 62 is fixedly connected to the side of the purification shell 6 away from the air supply pipe 61. Mounting rails 7 are fixedly connected to both sides of the inner wall of the purification shell 6. A filter element is installed between the two mounting rails 7. A centrifugal fan 63 is fixedly installed inside the exhaust pipe 62. A pressure relief valve 64 is fixedly installed on the top of the canister cover 2. The valve model can be Festo VAS series or SMC-VEX2 series. The inner wall of the purification shell 6... Both sides are fixedly installed with ultraviolet lamps 8, which can be Jinweishi GS-801B-20W or Xueleit L8-38W. The filter element includes a pre-filter layer 71, a fiber filter layer 72, an activated carbon adsorption layer 73, and a titanium dioxide photocatalytic layer 74, which are slidably inserted between the two mounting rails 7. The exhaust end of the air supply pipe 61 faces the pre-filter layer 71, the ultraviolet lamp 8 is located inside the purification shell 6 on the side close to the titanium dioxide photocatalytic layer 74, and the intake end of the centrifugal fan 63 faces the titanium dioxide photocatalytic layer 74.

[0026] Specifically, during use, by activating the centrifugal fan 63, a negative pressure is created inside the purification shell 6. This allows the exhaust gas generated in the mixing tank 1 to be drawn into the purification shell 6 through the air supply pipe 61. After passing through layers of filtration including the pre-filter layer 71, fiber filter layer 72, activated carbon adsorption layer 73, and titanium dioxide photocatalytic layer 74, the exhaust gas is discharged. Furthermore, during the exhaust gas extraction process, the pressure relief valve 64 allows external air to be introduced when the pressure inside the mixing tank 1 decreases, maintaining a stable air pressure within the mixing tank 1. During the purification process, the pre-filter layer 71 effectively intercepts larger particles of dust, colloids, or oil mist droplets carried in the exhaust gas. The system serves as both primary filtration and protection for the core filter layer. The fiber filter layer 72 efficiently captures fine dust particles in the exhaust gas. The activated carbon adsorption layer 73 adsorbs volatile organic compounds (VOCs) such as small organic silicon molecules, low-molecular-weight silicone oil, and solvent vapors from the exhaust gas. The titanium dioxide photocatalytic layer 74 generates highly oxidizing hydroxyl and superoxide radicals under ultraviolet light irradiated by the ultraviolet lamp 8, which decompose VOCs and odor molecules in the exhaust gas. This multi-layered approach achieves efficient and deep purification of the exhaust gas, preventing harm to the environment and the health of operators, thereby improving the environmental friendliness of the device.

[0027] The aforementioned stirring component includes a first motor 21 fixedly installed on the top of the tank lid 2, which may be a Flanders Primo series or a Bonfiglioli 700 / 800 series. The stirring tank 1 is equipped with a stirring paddle 22, the top of which is fixedly connected to the output end of the first motor 21.

[0028] Specifically, by starting the first motor 21, the stirring paddle 22 can be driven to rotate, thereby stirring the various raw materials added to the mixing tank 1.

[0029] In addition, both the purification shell 6 and the feeding hopper 3 in this device have through-hole inspection ports. The outer walls of the purification shell 6 and the feeding hopper 3 are fixed with inspection plates for sealing the inspection ports by screws. The installation of inspection ports and inspection plates makes it easy to maintain the internal structure of the purification shell 6 and the feeding hopper 3, ensuring the reliability of the device.

[0030] Components not described in detail in this article are existing technologies and will not be elaborated upon here.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fine chemical mixing device with multi-stage filtration and exhaust gas purification functions, comprising a mixing tank (1) and a tank cover (2) fixedly installed on the top of the mixing tank (1), wherein the tank cover (2) is provided with a stirring element, and a valve is fixedly installed on the discharge end of the mixing tank (1), characterized in that, Also includes: The feeding hopper (3) is fixedly connected to the top of the can lid (2). The feeding hopper (3) is equipped with a screening component for filtering impurities in the raw materials. The feeding hopper (3) is equipped with multiple sets of elastic balls (5). The feeding hopper (3) is equipped with a driving part for driving the elastic balls (5) to strike the screening component. Purification shell (6) is provided on top of the can lid (2). The purification shell (6) is provided with a filter section, which is used to purify the waste gas in the mixing tank (1).

2. The fine chemical mixing device with multi-stage filtration and exhaust gas purification function according to claim 1, characterized in that, The screening component includes a primary filter screen (4), a secondary filter screen (41) and a tertiary filter screen (42) disposed in the feeding hopper (3). Multiple mounting slots (31) are provided on both sides of the inner wall of the feeding hopper (3). The primary filter screen (4), the secondary filter screen (41) and the tertiary filter screen (42) are all inserted into the mounting slots (31).

3. The fine chemical mixing device with multi-stage filtration and exhaust gas purification function according to claim 1, characterized in that, The drive unit includes a second motor (51) fixedly installed on the outer wall of the feeding hopper (3), the output shaft of the second motor (51) extends into the feeding hopper (3), and at least two rotating rods (52) are rotatably connected to the feeding hopper (3). Among them, the output shaft of the second motor (51) and the rotating rod (52) are both fixedly connected to pulleys (53) connected by timing belts. One end of the output shaft of the second motor (51) and the rotating rod (52) is fixedly connected to a rotating wheel (54). The elastic ball (5) is fixedly connected to the circumferential surface of the rotating wheel (54). When the output shaft of the second motor (51) and the rotating rod (52) rotate, the elastic ball (5) will continuously strike the bottom surface of the first-stage filter (4), the second-stage filter (41) and the third-stage filter (42).

4. The fine chemical mixing device with multi-stage filtration and exhaust gas purification function according to claim 1, characterized in that, The filter section includes an air supply pipe (61) fixedly connected to the purification shell (6). The air inlet end of the air supply pipe (61) is connected to the can lid (2). An exhaust pipe (62) is fixedly connected to the side of the purification shell (6) away from the air supply pipe (61). Mounting rails (7) are fixedly connected to both sides of the inner wall of the purification shell (6). Among them, a filter element is provided between the two mounting rails (7), a centrifugal fan (63) is fixedly installed in the exhaust pipe (62), a pressure relief valve (64) is fixedly installed on the top of the tank cover (2), and ultraviolet lamps (8) are fixedly installed on both sides of the inner wall of the purification shell (6).

5. A fine chemical mixing device with multi-stage filtration and exhaust gas purification functions according to claim 4, characterized in that, The filter element includes a pre-filter layer (71) that is slidably inserted between two mounting rails (7), a fiber filter layer (72), an activated carbon adsorption layer (73), and a titanium dioxide photocatalytic layer (74). The exhaust end of the gas pipe (61) faces the pre-filter layer (71), the ultraviolet lamp (8) is located inside the purification shell (6) on the side close to the titanium dioxide photocatalytic layer (74), and the intake end of the centrifugal fan (63) faces the titanium dioxide photocatalytic layer (74).

6. A fine chemical mixing device with multi-stage filtration and exhaust gas purification functions according to claim 1, characterized in that, The stirring component includes a first motor (21) fixedly installed on the top of the tank cover (2), and a stirring paddle (22) is provided inside the stirring tank (1). The top of the stirring paddle (22) is fixedly connected to the output end of the first motor (21).

Images