A pharmaceutical dust multi-stage collection filter and a filtering method thereof

Abstract

The application discloses a multi-stage collecting filter for pharmaceutical dust and a filtering method thereof, and relates to the technical field of dust filtering. The multi-stage collecting filter comprises a cyclone filter and a switching assembly, and further comprises a retention assembly. The retention assembly comprises an import pipe, and the outer surfaces of the two sides of the import pipe are slidably connected with sealing plates. In the process of multi-stage filtering of pharmaceutical dust containing high-viscosity dust, the high-viscosity dirt in the dust is intercepted by the retention plates, and is adhered to the surfaces of the retention plates. When the surfaces of the retention plates are adhered with a large amount of dirt, the retention plates are rotated into the cleaning bin, the dirt on the surfaces of the retention plates is softened by a softening agent, the dirt adhered to the surfaces of the retention plates is cleaned under the stamping of high-pressure gas, and is recovered into a storage tank.

Description

Technical Field

[0001] This invention relates to the field of dust filtration technology, specifically to a multi-stage collection filter for pharmaceutical dust and its filtration method. Background Technology

[0002] Pharmaceutical dust multi-stage collection filters are graded purification devices specifically designed for dust control in the pharmaceutical industry. Their core function is to intercept and purify dust generated during the pharmaceutical production process in multiple stages, achieving efficient dust recovery while meeting the stringent GMP requirements and environmental emission standards of the pharmaceutical industry, and ensuring the cleanliness of the production environment and the health of operators.

[0003] In existing technologies, pharmaceutical dust multi-stage collection filters often employ indiscriminate filtration to uniformly filter dust during the dust filtration process. However, because pharmaceutical dust contains starch and lactose powder, the resulting dust has high viscosity. High-viscosity dust will directly adhere to the cyclone blades, cylinder walls, and exhaust pipes, and cannot be thrown off and settled by centrifugal force. This leads to a sharp decrease in separation efficiency. The adhered dust will block the flow channel, causing airflow turbulence and secondary entrainment. This will re-entrain the settled dust into the airflow and into the downstream filter media, increasing the downstream load. Ultimately, this can easily cause the pharmaceutical dust multi-stage collection filter to malfunction due to blockage.

[0004] Therefore, we propose a multi-stage collection filter for pharmaceutical dust and its filtration method to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a pharmaceutical dust multi-stage collection filter and its filtration method, in order to solve the problem that the pharmaceutical dust multi-stage collection filters mentioned in the background art often use indiscriminate filtration to uniformly filter dust, which easily leads to high-viscosity dust adhering to internal components and causing them to malfunction.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage pharmaceutical dust collection filter, comprising a cyclone filter and a switching assembly, and further comprising a retention assembly. The retention assembly includes an inlet pipe, and sealing plates are slidably connected to both outer surfaces of the inlet pipe. The switching assembly includes a cleaning chamber, and a rotating ring is rotatably connected inside the cleaning chamber. Two retention plates for adhering and retaining medium-to-high viscosity dust are coupled to the outer surface of the rotating ring. Spray nozzles for spraying softening agent are provided on the opposite inner walls of the cleaning chamber, and air nozzles for blowing away dirt from the surface of the retention plates are provided on the top inner surface of the cleaning chamber.

[0007] Preferably, the retention component further includes a buffer chamber, the outer surface of which is provided with an intelligent valve, the outer surface of which is provided with a solenoid valve, the outer surface of which is provided with a moving mechanism, the outer surface of which is threaded with a sliding plate, two limiting tubes fixedly connected to the opposite inner walls of which are introduced, an anti-pressure rod slidably connected inside which are introduced, a guide tube fixedly installed between the opposite inner walls of which are introduced, an electric push rod provided on the inner wall of which are introduced, a servo motor provided on the outer surface of which is anti-pressure rod, a connecting rod fixedly installed on the output end of which is servo motor, and a camera provided on the inner wall of which are introduced.

[0008] Preferably, the switching assembly further includes two movable connectors. A sealed tank is fixedly installed on the outer surface of the cleaning chamber via two auxiliary pipes. A delivery pump is installed on the outer surface of the sealed tank via an auxiliary plate. The inlet end of the delivery pump is fixedly connected to an inlet pipe, and the outlet end of the delivery pump is fixedly connected to an outlet pipe. A storage tank is fixedly installed on the top of the sealed tank via screws. A drain pipe is fixedly connected to the top of the storage tank. A switch valve is installed on the outer surface of the drain pipe. A fan is installed on the outer surface of the cleaning chamber via an auxiliary rod. The output end of the fan is fixedly connected to an inlet pipe.

[0009] Preferably, the top of the cleaning chamber is provided with an opening and closing mechanism, both sides of the rotating ring are provided with driving mechanisms, the top of the base plate is provided with a cutting assembly, the cutting assembly includes a mixing pipe, the outer surface of the mixing pipe is fixedly installed with an air pump by screws, the input end of the air pump is fixedly connected to an air inlet pipe, and the output end of the air pump is fixedly connected to an air outlet pipe.

[0010] Preferably, a gas tank is provided on the top of the base plate, a drive motor is provided inside the mixing pipe through an auxiliary plate, a drive shaft is fixedly connected to the output end of the drive motor, a flow divider is fixedly intercepted at one end of the drive shaft, a connecting rod is fixed to the inner wall of the mixing pipe, a positioning tube is rotatably connected inside the connecting rod, and a pneumatic shear rotor is fixed to one end of the positioning tube.

[0011] Preferably, one end of the inlet tube is fixedly inserted into the interior of the mixing pipe, and one end of the inlet tube is connected to one end of the mixing pipe. One end of the buffer chamber is fixedly inserted into the interior of the inlet tube. The outer surfaces of the two sealing plates are fixedly connected to the outer surface of the slide plate. The inner walls of the two sealing plates slide against the outer surfaces of the two limiting tubes respectively. The inner wall of the anti-pressure rod slides against the outer surface of the guide tube. One end of the electric push rod is fixedly connected to the outer surface of the anti-pressure rod.

[0012] Preferably, the bottom of the cleaning chamber is provided with a base plate, the outer surface of the cleaning chamber is fixedly connected to the top of the base plate through an auxiliary frame, the outer surface of the rotating ring extends movably through to the outside of the cleaning chamber, the outer surface of the rotating ring extends movably through to the inside of the inlet pipe, both of the two movable connectors are located inside the rotating ring, and the outer surfaces of the two movable connectors are respectively fixedly connected to the outer surfaces of the two retention plates.

[0013] Preferably, the bottom end of the inlet pipe is fixedly inserted into the interior of the sealed tank, both ends of the outlet pipe are fixedly inserted into the interior of the cleaning chamber, the inlet ends of the two nozzles are respectively coupled to both ends of the outlet pipe, both nozzles are disposed inside the cleaning chamber, one end of the drain pipe is fixedly inserted into the interior of the cleaning chamber, one end of the inlet pipe is fixedly inserted into the interior of the cleaning chamber, and one end of the inlet pipe is coupled to the air inlet of the air nozzle.

[0014] Preferably, both drive mechanisms are coupled to the outer surface of the mixing pipe, the outer surface of the mixing pipe is fixedly connected to the top of the base plate through an auxiliary frame, the bottom end of the air inlet pipe is fixedly inserted into the interior of the air tank, one end of the air outlet pipe is fixedly inserted into the interior of the mixing pipe, the outer surface of the diverter plate is rotatably connected to the inner wall of the mixing pipe, and one end of the mixing pipe is fixedly inserted into the interior of the cyclone filter.

[0015] A filtration method for a multi-stage collection filter for pharmaceutical dust includes the following steps:

[0016] S1. When multi-stage filtration of pharmaceutical dust containing high-viscosity dust is required, firstly, the external pipe and the inlet pipe are fixedly connected by a sealing flange. Then, the servo motor is started to adhere the high-viscosity dust in the airflow to the surface of the retention plate. When the camera detects that there is too much dirt on the surface of the retention plate, the servo motor and the solenoid valve are turned off, and the intelligent valve is opened. The electric push rod is started, which drives the anti-pressure rod to move in the direction of the electric push rod, thereby causing the connecting rod to move out of the interior of the movable connector.

[0017] S2. Activate the moving mechanism to move the two sealing plates along the surfaces of the two limiting tubes until both sealing plates are flush with one end of the limiting tube. Then, activate the opening and closing mechanism to open the top of the cleaning chamber and activate the two drive mechanisms to rotate the two retention plates. The clean stagnation plate is sealed inside the inlet pipe, and then the opening and closing mechanism is reversed to seal the cleaning chamber. The delivery pump is started so that the softener is sprayed bidirectionally onto the surface of the stagnation plate in the cleaning chamber.

[0018] S3. Then start the blower to drive the inlet pipe to deliver high-pressure gas into the cleaning chamber. The gas is sprayed onto the surface of the retention plate through the nozzle, causing the dirt on the surface of the retention plate to fall to the bottom of the cleaning chamber under the pressure of the gas. Open the switch valve to allow the dirt that has fallen into the cleaning chamber to enter the storage tank along the guide pipe. After passing through the retention plate, the dust continues to move forward along the cleaning chamber and enters the mixing pipe.

[0019] S4. Start the air pump to draw dry air into the air tank through the air inlet pipe. The dry air comes into contact with the splitter plate. Start the drive motor to rotate the splitter plate and generate a cyclone. The cyclone enters the mixing pipe and collides with the dry air, so that the dry air absorbs the moisture in the dust. After the dry air enters the mixing pipe, it will push the pneumatic shear rotor, causing it to rotate under the action of the wind. The rotation of the pneumatic shear rotor cuts the clumps of dust that are stuck together into fragments.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. During use, in the process of multi-stage filtration of pharmaceutical dust containing high-viscosity dust, the high-viscosity dirt in the dust is intercepted by the retention plate, causing it to adhere to the surface of the retention plate. When there is a lot of dirt adhering to the surface of the retention plate, the retention plate is rotated into the cleaning chamber. The dirt on the surface of the retention plate is softened by the softening agent, and the dirt remaining on the surface of the retention plate is cleaned under the impact of high-pressure gas and recycled into the storage tank. This solves the problem that the existing pharmaceutical dust multi-stage collection filters often use indiscriminate filtration to filter dust uniformly, which easily leads to high-viscosity dust adhering to the internal components and causing them to malfunction.

[0022] 2. During use, after the dust passes through the retention plate, it enters the mixing pipe and collides with the dry air. The dry air absorbs the moisture in the dust, reducing the humidity of the pharmaceutical dust and thus reducing its stickiness. At the same time, after the dry air enters the mixing pipe, it will push the pneumatic shear rotor, causing it to rotate under the action of the wind. The rotation of the pneumatic shear rotor cuts the sticky lumps of dust into fragments. Through the action of the cutting component, the working efficiency of the pharmaceutical dust multi-stage collection filter is further improved.

[0023] 3. During use, when high-viscosity dust is trapped by the retention plate, the connecting rod is moved into the interior of the movable connector, causing the servo motor to drive the retention plate to rotate, thereby increasing the trapping efficiency of high-viscosity dust. Attached Figure Description

[0024] Figure 1 This is a front perspective view of a multi-stage pharmaceutical dust collection filter according to the present invention;

[0025] Figure 2 This is a perspective view of the moving mechanism of a multi-stage pharmaceutical dust collection filter according to the present invention;

[0026] Figure 3 This is a perspective view of the drive mechanism of a multi-stage pharmaceutical dust collection filter according to the present invention;

[0027] Figure 4 This is a perspective cross-sectional view of the inlet pipe portion of a multi-stage pharmaceutical dust collection filter according to the present invention;

[0028] Figure 5 This is a perspective view of the switching component of a multi-stage pharmaceutical dust collection filter according to the present invention;

[0029] Figure 6 This is a sectional perspective view of the cleaning chamber portion of a multi-stage pharmaceutical dust collection filter according to the present invention;

[0030] Figure 7 This is a perspective cross-sectional view of the cleaning chamber portion of a multi-stage pharmaceutical dust collection filter according to the present invention.

[0031] Figure 8 This is a perspective view of the inlet pipe portion of a multi-stage pharmaceutical dust collection filter according to the present invention from another angle.

[0032] Figure 9 This is a perspective view of a cut component of a multi-stage pharmaceutical dust collection filter according to the present invention;

[0033] Figure 10 This is a perspective cross-sectional view of the mixing pipe portion of a multi-stage pharmaceutical dust collection filter according to the present invention.

[0034] In the picture:

[0035] 1. Base plate; 2. Retention assembly; 201. Inlet pipe; 202. Solenoid valve; 203. Buffer compartment; 204. Intelligent valve; 205. Moving mechanism; 206. Slide plate; 207. Sealing plate; 208. Limiting pipe; 209. Compression bar; 210. Guide pipe; 211. Electric actuator; 212. Servo motor; 213. Connecting rod; 214. Camera; 3. Switching assembly; 301. Cleaning compartment; 302. Rotating ring; 303. Movable connector; 304. Retention plate; 305. Sealing tank; 306. Transfer pump; 30 7. Inlet pipe; 308. Outlet pipe; 309. Nozzle; 310. Storage tank; 311. Drain pipe; 312. Switch valve; 313. Fan; 314. Inlet pipe; 315. Air nozzle; 4. Opening and closing mechanism; 5. Drive mechanism; 6. Cutting assembly; 601. Mixing pipe; 602. Air tank; 603. Air pump; 604. Air inlet pipe; 605. Air outlet pipe; 606. Connecting rod; 607. Drive motor; 608. Drive shaft; 609. Diverter plate; 610. Positioning pipe; 611. Pneumatic shear rotor; 7. Cyclone filter. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0037] Reference Figures 1-10As shown: A multi-stage pharmaceutical dust collection filter includes a cyclone filter 7 and a switching assembly 3, and also includes a retention assembly 2. The retention assembly 2 includes an inlet pipe 201, with sealing plates 207 slidably connected to both outer surfaces of the inlet pipe 201. The switching assembly 3 includes a cleaning chamber 301, with a rotating ring 302 rotatably connected inside the cleaning chamber 301. Two retention plates 304 for retaining medium-to-high viscosity dust are coupled to the outer surface of the rotating ring 302. The inner walls of the cleaning chamber 301 are provided with nozzles 309 for spraying softening agent. The top surface of the cleaning chamber 301 is provided with a nozzle 315 for blowing away dirt from the surface of the retention plates 304. The retention assembly 2 also includes a buffer chamber 203, with a smart valve on its outer surface. Door 204, solenoid valve 202 is installed on the outer surface of inlet pipe 201, moving mechanism 205 is installed on the outer surface of inlet pipe 201, sliding plate 206 is threaded on the outer surface of moving mechanism 205, two limit pipes 208 are fixedly connected to the relative inner walls of inlet pipe 201, anti-pressure rod 209 is slidably connected inside inlet pipe 201, guide pipe 210 is fixedly installed between the relative inner walls of inlet pipe 201, electric push rod 211 is installed on the inner wall of inlet pipe 201, servo motor 212 is installed on the outer surface of anti-pressure rod 209, connecting rod 213 is fixedly installed on the output end of servo motor 212, camera 214 is installed on the inner wall of inlet pipe 201, switching assembly 3 also includes two movable connectors 303, cleaning chamber 301 outer surface A sealed tank 305 is fixedly installed via two auxiliary pipes. A transfer pump 306 is mounted on the outer surface of the sealed tank 305 via an auxiliary plate. The inlet end of the transfer pump 306 is fixedly connected to an inlet pipe 307, and the outlet end of the transfer pump 306 is fixedly connected to an outlet pipe 308. A storage tank 310 is fixedly installed on the top of the sealed tank 305 via screws. A drain pipe 311 is fixedly connected to the top of the storage tank 310. A switch valve 312 is mounted on the outer surface of the drain pipe 311. A blower 313 is mounted on the outer surface of the cleaning chamber 301 via an auxiliary rod. An inlet pipe 314 is fixedly connected to the output end of the blower 313. One end of the inlet pipe 201 is fixedly inserted into the interior of the mixing pipe 601, and one end of the inlet pipe 201 is connected to one end of the mixing pipe 601. One end of the buffer chamber 203 is fixedly inserted into the interior of the inlet tube 201. The outer surfaces of the two sealing plates 207 are fixedly connected to the outer surface of the slide plate 206. The inner walls of the two sealing plates 207 slide against the outer surfaces of the two limiting tubes 208 respectively. The inner wall of the anti-compression rod 209 slides against the outer surface of the guide tube 210. One end of the electric push rod 211 is fixedly connected to the outer surface of the anti-compression rod 209. A base plate 1 is provided at the bottom of the cleaning chamber 301. The outer surface of the cleaning chamber 301 is fixedly connected to the top of the base plate 1 through an auxiliary frame. The outer surface of the rotating ring 302 movably extends through the exterior of the cleaning chamber 301 and into the interior of the inlet tube 201. Both movable connectors 303 are located inside the rotating ring 302.The outer surfaces of the two movable connectors 303 are fixedly connected to the outer surfaces of the two retention plates 304, respectively. The bottom end of the inlet pipe 307 is fixedly inserted into the interior of the sealed tank 305. Both ends of the outlet pipe 308 are fixedly inserted into the interior of the cleaning chamber 301. The inlet ends of the two nozzles 309 are coupled to both ends of the outlet pipe 308, respectively. Both nozzles 309 are located inside the cleaning chamber 301. One end of the drainage pipe 311 is fixedly inserted into the interior of the cleaning chamber 301. One end of the inlet pipe 314 is fixedly inserted into the interior of the cleaning chamber 301. One end of the inlet pipe 314 is coupled to the air inlet of the nozzle 315.

[0038] In this embodiment, during the multi-stage filtration of pharmaceutical dust containing highly viscous particles, the external pipe and the inlet pipe 201 are first fixedly connected via a sealing flange. Then, the servo motor 212 is started, driving the connecting rod 213 to rotate, which in turn drives the movable connector 303 to rotate. For example... Figure 4 As shown, the movable connector 303 has a rectangular groove that matches the cross-section of the connecting rod 213. As the connecting rod 213 rotates, it drives the retention plate 304 to rotate, thereby adhering highly viscous dust in the airflow to the surface of the retention plate 304. The retention plate 304 is made of polytetrafluoroethylene (PTFE) sheet, which can be used directly as a substrate for highly viscous medical dust. Simultaneously, an external control system activates the camera 214 to monitor the dirt content on the surface of the retention plate 304 in real time. The working principle of the camera 214 capturing the amount of dirt residue on the surface of the retention plate 304 is a mature existing technology and will not be elaborated upon here. In more detail, when it detects excessive dirt on the surface of the retention plate 304, it transmits a signal to the external control system, causing it to shut down the servo motor 212, simultaneously close the solenoid valve 202, and open the intelligent valve 204, allowing external dust to enter the buffer chamber 203. Then, it activates the electric actuator 211, shortening it, thereby moving the anti-compression rod 209 towards the electric actuator 211, causing the connecting rod 213 to move out of the movable connector 303. When it moves to a predetermined distance, it activates the moving mechanism 205, causing it to move the slide plate 206 towards the solenoid valve 202. For example... Figure 2 As shown, the moving mechanism 205 consists of a pressure-resistant frame, a drive device, and a lead screw. The drive device drives the lead screw to rotate, thereby causing the slide plate 206 to move along the surface of the lead screw, which in turn causes the two sealing plates 207 to move along the surfaces of the two limiting tubes 208 respectively, until both sealing plates 207 move to a position where their outer surfaces are flush with one end of the limiting tube 208, thus releasing the restriction on the rotating ring 302. The inner wall of the sealing plate 207 is made of a rubber material with a sealing function. When it seals the inlet tube 201, it prevents air leakage inside the inlet tube 201. Then, the opening and closing mechanism 4 is activated, thereby opening the top of the cleaning chamber 301. Figure 5 As shown, the opening and closing mechanism 4 consists of a forward and reverse motor, a bidirectional lead screw, a fixed tube, and sealing blocks. When the forward and reverse motor drives the bidirectional lead screw to rotate, it drives the two sealing blocks to move in opposite directions, thereby opening the top of the cleaning chamber 301. Then, the two drive mechanisms 5 are activated, such as... Figure 3 As shown, both drive mechanisms 5 consist of a drive device, a drive rod, and friction rollers. The outer surfaces of both friction rollers are tightly attached to the outer surface of the rotating ring 302. When the two friction rollers rotate in the same direction, they drive the rotating ring 302 to rotate, thereby driving the two retaining plates 304 to rotate. This causes the spare retention plate 304, located in the cleaning chamber 301, to rotate into the inlet pipe 201. Meanwhile, the retention plate 304, covered in high-viscosity dust, rotates into the cleaning chamber 301. At this point, the moving mechanism 205 is activated again to seal the clean retention plate 304 inside the inlet pipe 201. Then, the solenoid valve 202 is opened, allowing dust from the buffer chamber 203 and the outside to pass through the retention plate 304 again. This achieves automatic and continuous retention of high-viscosity dust by the dust collection filter. Then, the opening and closing mechanism 4 is activated in reverse to seal the cleaning chamber 301. The delivery pump 306 is then activated, driving the inlet pipe 307 to draw softening agent into the sealed tank 305. The softening agent enters the two nozzles 309 through the outlet pipe 308, finally spraying the surface of the retention plate 304 in the cleaning chamber 301 bidirectionally, softening the high-viscosity dirt on its surface. The softening agent is mainly made from pharmaceutical-grade isopropanol, which is broken down... The adhesive structure between particles in the high-viscosity dust is damaged, thereby reducing the adhesion strength between the dust and the retention plate 304. Then, the fan 313 is started, which drives the inlet pipe 314 to deliver high-pressure gas into the cleaning chamber 301. The gas is sprayed onto the surface of the retention plate 304 through the nozzle 315, causing the dirt on the surface of the retention plate 304 to fall to the bottom of the cleaning chamber 301 under the pressure of the gas. At this time, the switch valve 312 can be opened, so that the dirt that has fallen into the cleaning chamber 301 enters the storage tank 310 along the guide pipe 311. This realizes the automatic cleaning of dirt on the surface of the retention plate 304. Through the cooperation between the retention component 2 and the switching component 3, the multi-stage collection filter realizes the automatic cleaning of high-viscosity dust. This solves the problem that the existing pharmaceutical dust multi-stage collection filters often use indiscriminate filtration to filter dust uniformly, which easily leads to high-viscosity dust adhering to the internal components and causing the filter to malfunction.

[0039] like Figure 1 and Figures 9-10As shown, the top of the cleaning chamber 301 is equipped with an opening and closing mechanism 4, and both sides of the rotating ring 302 are equipped with drive mechanisms 5. The top of the base plate 1 is equipped with a cutting assembly 6, which includes a mixing pipe 601. An air pump 603 is fixedly installed on the outer surface of the mixing pipe 601 by screws. The input end of the air pump 603 is fixedly connected to an air inlet pipe 604, and the output end of the air pump 603 is fixedly connected to an air outlet pipe 605. An air tank 602 is installed on the top of the base plate 1. A drive motor 607 is installed inside the mixing pipe 601 through an auxiliary plate. The output end of the drive motor 607 is fixedly connected to a drive shaft 608, and a diverter plate 6 is fixedly intercepted at one end of the drive shaft 608. 09. A connecting rod 606 is fixed to the inner wall of the mixing pipe 601. A positioning tube 610 is rotatably connected inside the connecting rod 606. A pneumatic shear rotor 611 is fixed to one end of the positioning tube 610. Both drive mechanisms 5 are coupled to the outer surface of the mixing pipe 601. The outer surface of the mixing pipe 601 is fixedly connected to the top of the base plate 1 through an auxiliary frame. The bottom end of the air inlet pipe 604 is fixedly inserted into the interior of the air tank 602. One end of the air outlet pipe 605 is fixedly inserted into the interior of the mixing pipe 601. The outer surface of the diverter plate 609 is rotatably connected to the inner wall of the mixing pipe 601. One end of the mixing pipe 601 is fixedly inserted into the interior of the cyclone filter 7.

[0040] In this embodiment, after passing through the retention plate 304, the dust continues to move forward along the cleaning chamber 301 and enters the interior of the mixing pipe 601. At this time, the air pump 603 can be started by the external control system, driving the air inlet pipe 604 to draw dry air into the air tank 602. The dry air enters the interior of the mixing pipe 601 along the air outlet pipe 605 and comes into contact with the diverter plate 609. At this time, the drive motor 607 is started, driving the drive shaft 608 to rotate, thereby driving the diverter plate 609 to rotate. As shown below... Figure 10 As shown, multiple arc-shaped grooves are formed on the surface of the diverter plate 609. When the diverter plate 609 rotates, the airflow rotates along the arc-shaped grooves on the surface of the diverter plate 609, thereby generating a cyclone that enters the mixing pipe 601. Figure 1As shown, the mixing pipe 601 and the inlet pipe 201 are vertically arranged. When the pharmaceutical dust enters the mixing pipe 601, it collides with the dry air, causing the dry air to absorb the moisture in the dust, thereby reducing the humidity of the pharmaceutical dust and its stickiness. Simultaneously, after the dry air enters the mixing pipe 601, it exerts a thrust on the pneumatic shear rotor 611, causing it to rotate under the action of the wind. The rotation of the pneumatic shear rotor 611 cuts the clumps of dust into fragments, preventing them from entering the cyclone filter 7 and clogging its pipes. 7, as a coarse pretreatment unit, utilizes centrifugal force to achieve efficient separation of large-diameter, high-density dust particles, reducing the load on downstream medium-efficiency and high-efficiency filtration units and ensuring the stable operation of the entire filtration system. Its working principle is a mature existing technology and will not be discussed in detail here. The wind-driven shear rotor 611 is the core principle of rotating and cutting blocky dust under the propulsion of wind. It converts the kinetic energy of the wind into the rotational mechanical energy of the rotor, and then mechanically breaks up the brittle lumps through the shearing structure of the rotor. It is a mature existing technology and will not be discussed in detail here. Through the action of the cutting component 6, the working efficiency of the pharmaceutical dust multi-stage collection filter is further improved.

[0041] In this invention, when multi-stage filtration of pharmaceutical dust containing highly viscous particles is required, the external pipe and the inlet pipe 201 are first fixedly connected via a sealing flange. Then, the servo motor 212 is started, driving the connecting rod 213 to rotate, which in turn drives the movable connector 303 to rotate. As the connecting rod 213 rotates, the retention plate 304 rotates, thereby adhering the highly viscous dust in the airflow to the surface of the retention plate 304. Simultaneously, the camera 214 is activated through an external control system to monitor the dirt content on the surface of the retention plate 304 in real time. When it detects the dirt content on the retention plate... When there is excessive dirt on the surface of 304, a signal is transmitted to the external control system to shut down the servo motor 212, simultaneously close the solenoid valve 202, and open the intelligent valve 204, allowing external dust to enter the buffer chamber 203. Then, the electric actuator 211 is activated, shortening it and causing the anti-compression rod 209 to move towards the electric actuator 211, thereby moving the connecting rod 213 out of the movable connector 303. When it moves to the specified distance, the moving mechanism 205 is activated, causing the sliding plate 206 to move towards the solenoid valve 202. Figure 2As shown, the moving mechanism 205 consists of a pressure-resistant frame, a drive unit, and a lead screw. The drive unit drives the lead screw to rotate, thereby causing the sliding plate 206 to move along the surface of the lead screw. This, in turn, causes the two sealing plates 207 to move along the surfaces of the two limiting tubes 208, until both sealing plates 207 have moved to a position where their outer surfaces are flush with one end of the limiting tube 208. This releases the restriction on the rotating ring 302. Then, the opening and closing mechanism 4 is activated, thereby opening the top of the cleaning chamber 301. Figure 5 As shown, the opening and closing mechanism 4 consists of a forward and reverse motor, a bidirectional lead screw, a fixed tube, and sealing blocks. When the forward and reverse motor drives the bidirectional lead screw to rotate, it drives the two sealing blocks to move in opposite directions, thereby opening the top of the cleaning chamber 301. Then, the two drive mechanisms 5 are activated, such as... Figure 3 As shown, both drive mechanisms 5 consist of a drive device, a drive rod, and friction rollers. The outer surfaces of both friction rollers are tightly attached to the outer surface of the rotating ring 302. When the two friction rollers rotate in the same direction, they drive the rotating ring 302 to rotate, thereby driving the two retaining plates 304 to rotate. This causes the spare retention plate 304, located in the cleaning chamber 301, to rotate into the inlet pipe 201. Meanwhile, the retention plate 304 covered in high-viscosity dust rotates into the cleaning chamber 301. At this point, the moving mechanism 205 is activated again to seal the clean retention plate 304 inside the inlet pipe 201. Then, the solenoid valve 202 is opened, allowing dust from the buffer chamber 203 and the outside to pass through the retention plate 304 again. This achieves automatic and continuous retention of high-viscosity dust by the dust collection filter. Then, the opening and closing mechanism 4 is activated in reverse to seal the cleaning chamber 301. The delivery pump 306 is then activated, driving the inlet pipe 307 to draw softener into the sealed tank 305. The softener enters the two nozzles 309 through the outlet pipe 308, finally spraying the surface of the retention plate 304 in the cleaning chamber 301 bidirectionally, softening the high-viscosity dirt on its surface. Then, the blower 313 is activated, driving the inlet pipe 304... 14. High-pressure gas is supplied to the interior of the cleaning chamber 301. The gas is sprayed onto the surface of the retention plate 304 through the nozzle 315, causing the dirt on the surface of the retention plate 304 to fall to the bottom of the interior of the cleaning chamber 301 under the pressure of the gas. At this time, the switch valve 312 can be opened, so that the dirt that has fallen into the cleaning chamber 301 enters the interior of the storage tank 310 along the guide pipe 311, thereby realizing the automatic cleaning of the dirt on the surface of the retention plate 304. After passing through the retention plate 304, the dust continues to move forward along the cleaning chamber 301 and enters the interior of the mixing pipe 601. At this time, the air pump 603 can be started through the external control system, driving the air inlet pipe 604 to draw dry air into the air tank 602. The dry air enters the interior of the mixing pipe 601 along the air outlet pipe 605 and comes into contact with the diverter plate 609. At this time, the drive motor 607 is started, driving the drive shaft 608 to rotate, thereby driving the diverter plate 609 to rotate. Figure 10 As shown, multiple arc-shaped grooves are formed on the surface of the diverter plate 609. When the diverter plate 609 rotates, the airflow rotates along the arc-shaped grooves on the surface of the diverter plate 609, thereby generating a cyclone that enters the mixing pipe 601. Figure 1 As shown, the mixing pipe 601 and the inlet pipe 201 are vertically arranged. When the pharmaceutical dust enters the mixing pipe 601, it collides with the dry air, causing the dry air to absorb the moisture in the dust, thereby reducing the humidity of the pharmaceutical dust and its stickiness. At the same time, after the dry air enters the mixing pipe 601, it will exert a thrust on the pneumatic shear rotor 611, causing it to rotate under the action of the wind. The rotation of the pneumatic shear rotor 611 cuts the clumps of dust that are stuck together into fragments, preventing them from entering the cyclone filter 7 and clogging the pipes of the cyclone filter 7.

[0042] The wiring diagrams for the solenoid valve 202, intelligent valve 204, moving mechanism 205, electric actuator 211, servo motor 212, camera 214, delivery pump 306, switching valve 312, fan 313, opening and closing mechanism 4, drive mechanism 5, air pump 603, drive motor 607, and cyclone filter 7 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to the actual filtration. Therefore, the control methods and wiring layouts of the solenoid valve 202, intelligent valve 204, moving mechanism 205, electric actuator 211, servo motor 212, camera 214, delivery pump 306, switching valve 312, fan 313, opening and closing mechanism 4, drive mechanism 5, air pump 603, drive motor 607, and cyclone filter 7 will not be explained in detail.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pharmaceutical dust multi-stage collection filter comprising a cyclone filter (7) and a switching assembly (3), characterized in that: Also include the retention component (2), the retention component (2) includes the introduction pipe (201), both sides of the outer surface of the introduction pipe (201) are slidably connected with the sealing plate (207); The switching assembly (3) includes a cleaning bin (301), the inside of the cleaning bin (301) is rotatably connected with a rotating ring (302), the outer surface of the rotating ring (302) is coupled with two adhesion retention plates (304) that retain high-viscosity dust, the opposite inner walls of the cleaning bin (301) are provided with spray heads (309) for spraying softening agent, and the inside top surface of the cleaning bin (301) is provided with a blast nozzle (315) for blowing off dirt on the surface of the retention plate (304); The retention component (2) further includes a buffer bin (203), the outer surface of the buffer bin (203) is provided with an intelligent valve (204), the outer surface of the introduction pipe (201) is provided with a solenoid valve (202), the outer surface of the introduction pipe (201) is provided with a moving mechanism (205), the outer surface of the moving mechanism (205) is threadedly sleeved with a sliding plate (206), the opposite inner walls of the introduction pipe (201) are fixedly connected with two limiting pipes (208), the inside of the introduction pipe (201) is slidably connected with a compression-resistant rod (209), the opposite inner walls of the introduction pipe (201) are fixedly installed with a guide pipe (210), the inner wall of the introduction pipe (201) is provided with an electric push rod (211), the outer surface of the compression-resistant rod (209) is provided with a servo motor (212), the output end of the servo motor (212) is fixedly installed with a connecting rod (213), and the inner wall of the introduction pipe (201) is provided with a camera (214); The switching assembly (3) further includes two movable connecting heads (303), the outer surface of the cleaning bin (301) is fixedly installed with a sealed tank (305) through two auxiliary pipes, the outer surface of the sealed tank (305) is provided with a delivery pump (306) through an auxiliary plate, the liquid inlet end of the delivery pump (306) is fixedly communicated with a liquid inlet pipe (307), the liquid outlet end of the delivery pump (306) is fixedly communicated with a liquid outlet pipe (308), the top of the sealed tank (305) is fixedly installed with a storage tank (310) through screws, the top of the storage tank (310) is fixedly communicated with a drainage pipe (311), the outer surface of the drainage pipe (311) is provided with an on-off valve (312), the outer surface of the cleaning bin (301) is provided with a fan (313) through an auxiliary rod, and the output end of the fan (313) is fixedly communicated with an introduction pipe (314).

2. The pharmaceutical dust multi-stage collection filter of claim 1, wherein: The bottom of the cleaning bin (301) is provided with a bottom plate (1), the top of the cleaning bin (301) is provided with an opening and closing mechanism (4), both sides of the rotating ring (302) are provided with a driving mechanism (5), the top of the bottom plate (1) is provided with a cutting assembly (6), the cutting assembly (6) comprises a mixing pipe (601), the outer surface of the mixing pipe (601) is fixedly installed with an air pump (603) through screws, the input end of the air pump (603) is fixedly communicated with an air inlet pipe (604), and the output end of the air pump (603) is fixedly communicated with an air outlet pipe (605).

3. The pharmaceutical dust multi-stage collection filter of claim 2, wherein: The top of the bottom plate (1) is provided with an air tank (602), the inside of the mixing pipe (601) is provided with a driving motor (607) through an auxiliary plate, the output end of the driving motor (607) is fixedly connected with a driving shaft (608), one end of the driving shaft (608) is fixedly intercepted with a shunt plate (609), the inner wall of the mixing pipe (601) is fixedly connected with a connecting rod (606), the inside of the connecting rod (606) is rotatably connected with a positioning pipe (610), one end of the positioning pipe (610) is fixedly connected with a pneumatic shearing rotor (611).

4. The pharmaceutical dust multi-stage collection filter of claim 3, wherein: One end of the guide pipe (201) is fixedly penetrated into the inside of the mixing pipe (601), one end of the guide pipe (201) is communicated with one end of the mixing pipe (601), one end of the buffer bin (203) is fixedly penetrated into the inside of the guide pipe (201), the outer surfaces of the two sealing plates (207) are fixedly connected with the outer surface of the sliding plate (206), the inner walls of the two sealing plates (207) are respectively slidably connected with the outer surfaces of the two limiting pipes (208), the inner wall of the pressure-resistant rod (209) is slidably connected with the outer surface of the guide pipe (210), and one end of the electric push rod (211) is fixedly connected with the outer surface of the pressure-resistant rod (209).

5. The pharmaceutical dust multi-stage collection filter of claim 4, wherein: The outer surface of the cleaning bin (301) is fixedly connected with the top of the bottom plate (1) through an auxiliary frame, the outer surface of the rotating ring (302) is movably penetrated into the outside of the cleaning bin (301), the outer surface of the rotating ring (302) is movably penetrated into the inside of the guide pipe (201), the two movable connecting heads (303) are arranged in the inside of the rotating ring (302), and the outer surfaces of the two movable connecting heads (303) are respectively fixedly connected with the outer surfaces of the two retention plates (304).

6. The pharmaceutical dust multi-stage collection filter of claim 5, wherein: The bottom end of the liquid inlet pipe (307) is fixedly penetrated into the inside of the sealing tank (305), both ends of the liquid outlet pipe (308) are fixedly penetrated into the inside of the cleaning bin (301), the liquid inlet ends of the two spray heads (309) are respectively coupled with both ends of the liquid outlet pipe (308), the two spray heads (309) are arranged in the inside of the cleaning bin (301), one end of the drainage pipe (311) is fixedly penetrated into the inside of the cleaning bin (301), one end of the lead-in pipe (314) is fixedly penetrated into the inside of the cleaning bin (301), and one end of the lead-in pipe (314) is coupled with the air inlet of the air nozzle (315).

7. The pharmaceutical dust multi-stage collection filter of claim 6, wherein: Two drive mechanisms (5) are coupled with the outer surface of the mixing pipe (601), the outer surface of the mixing pipe (601) is fixedly connected with the top of the bottom plate (1) through an auxiliary frame, the bottom end of the air inlet pipe (604) is fixedly penetrated into the inside of the gas tank (602), one end of the air outlet pipe (605) is fixedly penetrated into the inside of the mixing pipe (601), the outer surface of the flow distribution plate (609) is rotatably connected with the inner wall of the mixing pipe (601), one end of the mixing pipe (601) is fixedly penetrated into the inside of the cyclone filter (7).

8. A method of filtering a pharmaceutical dust multi-stage collection filter, characterized by, The pharmaceutical dust multi-stage collection filter of claim 7 comprises the following steps: S1, when the pharmaceutical dust containing high-viscosity dust needs to be filtered in multiple stages, first, the outer pipeline is fixedly communicated with the inlet pipe (201) through a sealing flange, then the servo motor (212) is started, the high-viscosity dust in the airflow is adhered to the surface of the retention plate (304), when the camera (214) detects that the surface of the retention plate (304) is too dirty, the servo motor (212) and the electromagnetic valve (202) are closed, the intelligent valve (204) is opened, the electric push rod (211) is started, and the compression-resistant rod (209) is driven to move towards the electric push rod (211), so that the connecting rod (213) moves out of the inside of the movable connector (303); S2, start the moving mechanism (205), so that the two sealing plates (207) move along the surface of the two limiting tubes (208) respectively, until the two sealing plates (207) are moved to the position where the outer surface is flush with one end of the limiting tube (208), then start the opening and closing mechanism (4) to open the top of the cleaning bin (301), start the two driving mechanisms (5) to drive the two retention plates (304) to rotate Seal the clean retention plate (304) inside the inlet tube (201), then reverse the opening and closing mechanism (4) to seal the cleaning bin (301), and start the conveying pump (306) to spray the softening agent on the surface of the retention plate (304) in the cleaning bin (301) in both directions. S3, then the fan (313) is started, which drives the inlet pipe (314) to transport high-pressure gas into the inside of the cleaning bin (301), the gas is sprayed to the surface of the retention plate (304) through the tuyere (315), so that the dirt remaining on the surface of the retention plate (304) falls to the bottom surface of the cleaning bin (301) under the impact of the gas, the switch valve (312) is opened, the dirt falling into the cleaning bin (301) enters the inside of the storage tank (310) along the drainage pipe (311), after the dust passes through the retention plate (304), it continues to move forward along the cleaning bin (301) and enters the inside of the mixing pipe (601); S4, the air pump (603) is started, which drives the air inlet pipe (604) to extract dry air into the inside of the gas tank (602), the dry air contacts the flow distribution plate (609), the drive motor (607) is started, which drives the flow distribution plate (609) to rotate and generate a cyclone, which collides with the dry air in the mixing pipe (601), so that the dry air absorbs the moisture in the dust, after the dry air enters the mixing pipe (601), it will generate a thrust on the wind-driven shearing rotor (611), which will rotate under the action of the wind, the rotation of the wind-driven shearing rotor (611) cuts the blocky dust adhered together into debris.

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