A pulverizing system

Abstract

The utility model relates to a kind of biological matrix production technical field, specifically to a kind of pulverizing system.It includes air jet pulverizer, the discharge pipe of air jet pulverizer is communicated with the feed pipe of tank body, and the inside one side of tank body upper end is fixedly sealed with mounting frame, the mounting frame in tank body is fixed with filter screen one end, filter screen lower end is inclined to tank body outside direction, and the end of mounting frame away from filter screen extends to tank body outside, and multiple vibration motors are fixed in the inside one end of mounting frame of tank body outside, and tank body is fixed with air outlet pipe, and air outlet pipe is communicated with the inside of mounting frame, and air outlet pipe and the air inlet pipe of air jet pulverizer are communicated by cyclone separator.The utility model is through waste gas circulation design, and air outlet pipe is communicated with air inlet pipe by cyclone separator, and the gas pressure in tank body keeps stable, avoids the material jamming problem caused by gas pressure rising, so as to ensure that the material after crushing can smoothly enter tank body, improve overall processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bio-based production technology, specifically to a pulverizing system. Background Technology

[0002] In the production of bio-based substrates, branches and straw need to be shredded using a shredder before being placed into a fermentation tank for fermentation. The commonly used shredder for branches and straw is an air jet mill, which transports the shredded materials to a designated location using its fan.

[0003] When using an air jet mill to shred branches and straw, in order to improve production efficiency, the discharge pipe of the air jet mill is usually connected to a fermentation tank, and the shredded branches and straw are directly transported into the fermentation tank. However, as air and shredded branches and straw continuously enter the fermentation tank, the pressure inside the fermentation tank is relatively high, which affects the entry of shredded branches and straw into the fermentation tank. Therefore, an outlet is usually set on the fermentation tank and an air bag is installed on the outlet. However, the air bag is easily blocked and needs to be cleaned frequently.

[0004] Patent document CN211755545U discloses an air circulation system for an ultrafine pulverizer. The system includes an ultrafine pulverizer, with its outlet connected to its inlet via a circulating air path. This circulating air path includes a gas-solid separation device for material collection, a dust removal device, and a power supply fan. This system avoids exhaust emissions, as a portion of the pulverized material enters the gas-solid separation device and the dust removal device. After pulverization, the material in these devices needs to be collected. However, when the particle size of the pulverized material is small, a large portion of the material enters the gas-solid separation device and the dust removal device, thus affecting the efficiency of collecting the pulverized material.

[0005] Patent document CN206778679U discloses a closed-loop recirculating pharmaceutical pulverizer. When the pulverizer is working, material is fed into the pulverizing host, the power is turned on, and the pulverizing host, sieve, cyclone separator, and motor begin operation. Simultaneously, cooling water is injected into the cooling water jacket. After the pulverizing host pulverizes the material, it falls onto the sieve at the discharge port. Unpulverized particles are separated by the sieve, and the pulverized material is fed into the air inlet pipe, where it is carried by airflow into the feeding pipe and then into the cyclone separator. After separation by the cyclone separator, the pulverized material enters the discharge port, and the separated airflow enters the return air above the cyclone separator. The airflow, cooled by the cooling water jacket, returns to the fan box for the next cycle of separation. Although the returning airflow carries some pulverized material, it can continue to separate in the next cycle, preventing waste and ensuring that no airflow carrying pulverized material flows into the atmosphere. This technical solution mainly relies on cyclone separators to separate the crushed materials. The materials need to be discharged from the discharge port of the cyclone separator and then transferred, which is inconvenient for the crushed materials to directly enter the fermentation tank. Utility Model Content

[0006] The main objective of this invention is to provide a pulverizing system that allows pulverized materials to be directly fed into a fermentation tank while preventing over-pulverization and ensuring the particle size of the materials.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows: A pulverizing system includes an air jet mill, the discharge pipe of which is connected to the inlet pipe of a tank. A mounting frame is fixedly sealed on one side of the upper end of the tank. A filter screen is fixed at one end of the mounting frame inside the tank. The lower end of the filter screen is inclined towards the outside of the tank. The end of the mounting frame away from the filter screen extends to the outside of the tank. Multiple vibrating motors are fixed inside one end of the mounting frame on the outside of the tank. An air outlet pipe is fixed on the tank and is connected to the inside of the mounting frame. The air outlet pipe is connected to the air inlet pipe of the air jet mill through a cyclone separator. A signal pressure relief valve is fixedly connected to the upper end of the tank. An air bag is installed on the outlet end of the signal pressure relief valve. The signal pressure relief valve, a controller, a relay for controlling the air jet mill, a driver, and vibrating motors are electrically connected.

[0008] Specifically, the air jet mill is fixed on the base, and a housing is fixed on the base. The air jet mill is located inside the housing, which has an opening on the right side, and the inlet of the air jet mill is located on the right side.

[0009] Specifically, a first branch pipe and a second branch pipe are fixed on the left side of the housing. The air inlet pipe is connected to the first branch pipe, and the discharge pipe is connected to the second branch pipe. The air outlet pipe is connected to the air inlet pipe through a cyclone separator and the first branch pipe, and the feed pipe is connected to the discharge pipe through the second branch pipe.

[0010] Specifically, the mounting frame includes two symmetrically arranged vertical plates. The upper and lower ends of the two vertical plates are fixedly connected by two flat plates. The lower left end of the mounting frame is inclined towards the outside of the tank. The filter screen is parallel to the left end of the mounting frame. The right ends of the two flat plates penetrate the right side wall of the tank. One end of the vertical plate is fixedly and sealed to the right side wall of the tank. The flat plates are also fixedly and sealed to the right side wall of the tank. A vibration motor is fixed on the opposite end face of the two flat plates on the outside of the tank.

[0011] Specifically, multiple pull ropes are fixed to the lower end of the upper plate. These pull ropes are located inside the tank and are evenly distributed in the front-back direction. A ball is fixed to the lower end of each pull rope, and the ball contacts the right end face of the filter screen.

[0012] Specifically, a level switch is installed inside the tank, and the level switch is electrically connected to the controller.

[0013] Specifically, the diameter of the filter pores needs to be smaller than the particle size of the material being crushed.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Through the exhaust gas recirculation design, the exhaust pipe is connected to the inlet pipe via a cyclone separator, keeping the air pressure inside the tank stable and avoiding material blockage caused by increased air pressure. This ensures that the crushed material can smoothly enter the tank, improving the overall processing efficiency.

[0015] 2. The exhaust gas circulates in a closed loop between the air jet mill and the tank, eliminating the need for external emissions, effectively preventing the spread of exhaust gas, reducing environmental pollution, and meeting the requirements of green production.

[0016] 3. The filter screen is designed with a pore diameter smaller than the material particle size. Combined with the inclined installation of the filter screen, it accurately intercepts the crushed material, preventing the crushed material from returning to the airflow pulverizer through the air outlet and being crushed again. This ensures that the final product has a uniform particle size and improves product quality.

[0017] 4. When the filter screen becomes clogged, causing the air pressure to rise, the signal pressure relief valve is automatically triggered to release pressure to the air bag to prevent the tank from becoming over-pressurized; the controller is linked to shut down the airflow pulverizer and start the vibration motor to drive the mounting frame and filter screen to vibrate and quickly clear the clogged material; after the set working time, it will automatically resume operation, realizing unattended maintenance, reducing downtime and extending the equipment life.

[0018] 5. Based on the vibrating motor, a pull rope and a ball-bearing structure are added. During vibration, the ball-bearing structure intermittently impacts the filter screen, accelerating the separation of clogged materials, further improving cleaning efficiency and system stability, and is suitable for high-load working conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the mounting frame.

[0021] The components in the attached diagram are named as follows: 1. Base, 2. Shell, 3. Airflow pulverizer, 4. Inlet pipe, 5. Outlet pipe, 6. First branch pipe, 7. Second branch pipe, 8. Cyclone separator, 9. Tank, 10. Inlet pipe, 11. Outlet pipe, 12. Material level switch, 13. Mounting frame, 131. Flat plate, 132. Vertical plate, 14. Vibrating motor, 15. Filter screen, 16. Bounce ball, 17. Pull rope, 18. Signal pressure relief valve, 19. Air bag. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Refer to Figures 1-2 As shown, a pulverizing system includes an air jet pulverizer 3, which is fixed on a base 1. A housing 2 is fixed on the base 1. The air jet pulverizer 3 is located inside the housing 2. The housing 2 has an opening on the right side, and the inlet of the air jet pulverizer 3 is located on the right side.

[0024] The discharge pipe 5 of the air jet mill 3 is connected to the feed pipe 10 of the tank body 9. An installation frame 13 is fixedly sealed on one side of the upper end of the tank body 9. A filter screen 15 is fixed at one end of the installation frame 13 inside the tank body 9. The lower end of the filter screen 15 is inclined towards the outside of the tank body 9. An air outlet pipe 11 is fixed on the tank body 9. The air outlet pipe 11 is connected to the inside of the installation frame 13. The air outlet pipe 11 is connected to the air inlet pipe 4 of the air jet mill 3 through a cyclone separator 8.

[0025] Specifically, the left side of the housing 2 is fixed with a first branch pipe 6 and a second branch pipe 7. The air inlet pipe 4 is connected to the first branch pipe 6, the discharge pipe 5 is connected to the second branch pipe 7, the air outlet pipe 11 is connected to the air inlet pipe 4 through the cyclone separator 8 and the first branch pipe 6, and the feed pipe 10 is connected to the discharge pipe 5 through the second branch pipe 7.

[0026] The end of the mounting frame 13 away from the filter screen 15 extends to the outside of the tank body 9, and a plurality of vibration motors 14 are fixed inside one end of the mounting frame 13 on the outside of the tank body 9.

[0027] The lower left end of the mounting frame 13 is inclined to the right, and the filter screen 15 is parallel to the left port of the mounting frame 13. The mounting frame 13 includes two upright plates 132 arranged symmetrically front to back. The upper and lower ends of the two upright plates 132 are fixedly connected by two flat plates 131 respectively. The right ends of the two flat plates 131 penetrate through the right side wall of the tank 9. One end of the upright plate 132 is fixedly and sealed to the right side wall of the tank 9, and the flat plate 131 is fixedly and sealed to the right side wall of the tank 9. A vibration motor 14 is fixed on the opposite end face of the two flat plates 131 on the outside of the tank 9.

[0028] A signal pressure relief valve 18 is fixedly connected to the upper end of the tank body 9, and an air bag 19 is installed on the outlet end of the signal pressure relief valve 18. The signal pressure relief valve 18, the controller, the relay controlling the airflow pulverizer 3, the driver, and the vibration motor 14 are electrically connected.

[0029] A level switch 12 is installed inside the tank body 9, and the level switch 12 is electrically connected to the controller.

[0030] When crushing materials (twigs, straw, etc.), the air jet mill 3 is started. Materials are added to the air jet mill 3 through its inlet. After being crushed, the crushed materials, under the action of the fan in the air jet mill 3, sequentially enter the tank 9 through the discharge pipe 5, the second branch pipe 7, and the feed pipe 10. After the air jet mill 3 starts, the air in the tank 9 passes through the filter screen 15 and then enters the air jet mill 3 through the air outlet pipe 11, the cyclone separator 8, the first branch pipe 6, and the air inlet pipe 4. This prevents pressure buildup in the tank 9 and ensures that the crushed materials can smoothly enter the tank 9. Simultaneously, exhaust gas circulates within the air jet mill 3 and the tank 9, preventing exhaust emissions.

[0031] The filter pore diameter of the filter screen 15 needs to be smaller than the particle size of the material being crushed. During the exhaust process of the exhaust gas in the tank 9, the crushed material in the tank 9 is prevented from being discharged from the exhaust pipe 11 and then entering the air jet mill 3 to be crushed again, thereby ensuring the particle size of the crushed material.

[0032] The particle size of the material after pulverization needs to balance air permeability and microbial contact area. Particles that are too large reduce air permeability, leading to uneven fermentation; particles that are too small may cause fermentation to heat up too quickly, resulting in contamination by other microorganisms. Therefore, ensuring the correct particle size after pulverization is essential.

[0033] When filter 15 becomes clogged, the air pressure inside tank 9 increases. When the air pressure inside tank 9 exceeds the set pressure of signal pressure relief valve 18, signal pressure relief valve 18 opens and releases pressure to air bag 19, causing tank 9 to depressurize. Simultaneously, signal pressure relief valve 18 sends a signal to controller, which shuts down air jet mill 3 and starts vibration motor 14. After vibration motor 14 starts, mounting frame 13 and filter 15 vibrate, thereby separating the pulverized material clogging filter 15 from the filter 15. Vibration motor 14 shuts off after a set operating time, while air jet mill 3 starts up again.

[0034] Example 2: Based on Example 1, referring to... Figures 1-2 As shown, multiple pull ropes 17 are fixed at the lower end of the upper plate 131. The multiple pull ropes 17 are located inside the tank body 9 and are evenly distributed in the front-back direction. A ball 16 is fixed at the lower end of the pull rope 17 and the ball 16 contacts the right end face of the filter screen 15.

[0035] After the vibration motor 14 is started, the mounting frame 13 and the filter screen 15 vibrate. During the vibration of the filter screen 15, the ball 16 can intermittently strike the filter screen 15, and the crushed material that can accelerate the separation of the filter screen 15 from the filter screen 15.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pulverizing system, comprising an air jet mill (3), characterized in that, The discharge pipe (5) of the air jet mill (3) is connected to the feed pipe (10) of the tank (9). A mounting frame (13) is fixedly sealed on one side of the upper end of the tank (9). A filter screen (15) is fixed to one end of the mounting frame (13) inside the tank (9). The lower end of the filter screen (15) is inclined towards the outside of the tank (9). The end of the mounting frame (13) away from the filter screen (15) extends to the outside of the tank (9). Multiple vibrating motors (14) are fixed inside one end of the mounting frame (13) on the outside of the tank (9). An air outlet pipe (11) is fixed on the body (9). The air outlet pipe (11) is connected to the inside of the mounting frame (13). The air outlet pipe (11) is connected to the air inlet pipe (4) of the airflow pulverizer (3) through a cyclone separator (8). A signal pressure relief valve (18) is fixedly connected to the upper end of the tank (9). An air bag (19) is installed on the outlet end of the signal pressure relief valve (18). The signal pressure relief valve (18), the controller, the relay controlling the airflow pulverizer (3), the driver and the vibration motor (14) are electrically connected.

2. The pulverizing system according to claim 1, characterized in that, The airflow pulverizer (3) is fixed on the base (1), and the base (1) is fixed with a shell (2). The airflow pulverizer (3) is located inside the shell (2), and the shell (2) has an opening on the right side, with the inlet of the airflow pulverizer (3) located on the right side.

3. The pulverizing system according to claim 2, characterized in that, The shell (2) has a first branch pipe (6) and a second branch pipe (7) fixed on the left side. The air inlet pipe (4) is connected to the first branch pipe (6), the discharge pipe (5) is connected to the second branch pipe (7), the air outlet pipe (11) is connected to the air inlet pipe (4) through the cyclone separator (8) and the first branch pipe (6), and the feed pipe (10) is connected to the discharge pipe (5) through the second branch pipe (7).

4. The pulverizing system according to claim 1, characterized in that, The lower left end of the mounting frame (13) is inclined towards the outside of the tank (9), and the filter screen (15) is parallel to the left port of the mounting frame (13). The mounting frame (13) includes two upright plates (132) arranged symmetrically in front and behind. The upper and lower ends of the two upright plates (132) are fixedly connected by two flat plates (131) respectively. The right ends of the two flat plates (131) penetrate through the right side wall of the tank (9). One end of the upright plate (132) is fixedly and sealed to the right side wall of the tank (9). The flat plate (131) is fixedly and sealed to the right side wall of the tank (9). A vibration motor (14) is fixed on the opposite end face of the two flat plates (131) on the outside of the tank (9).

5. The pulverizing system according to claim 4, characterized in that, Multiple pull ropes (17) are fixed at the lower end of the upper plate (131). The multiple pull ropes (17) are located inside the tank (9). The multiple pull ropes (17) are evenly distributed in the front and back direction. A ball (16) is fixed at the lower end of the pull rope (17). The ball (16) contacts the right end face of the filter screen (15).

6. The pulverizing system according to claim 1, characterized in that, A level switch (12) is installed inside the tank (9), and the level switch (12) is electrically connected to the controller.

7. The pulverizing system according to claim 1, characterized in that, The diameter of the filter pores of the filter screen (15) needs to be smaller than the particle size of the material being crushed.

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