A feeding device for fluidized granulation

Abstract

This utility model discloses a feeding device for fluidized bed granulation, including a peristaltic pump, a pressure gauge, a filter tank, a buffer tank, a float level gauge, a gear pump, an atomizer, several adapters, and valves. The upper end of the filter tank is connected to the peristaltic pump and the pressure gauge via a No. 1 tee. The pressure gauge is connected to the No. 1 tee, the float level gauge, and a pressure relief valve via a four-way valve. A slurry collection tank is connected to the right side of the pressure relief valve. The lower end of the filter tank is connected to the buffer tank. The lower end of the buffer tank is connected to the float level gauge and the gear pump via a No. 2 tee. The gear pump is connected to the atomizer. A filter screen is installed inside the filter tank. A water purification tank and a water treatment system are also connected to the gear pump. This utility model has the advantages of no pulse effect, continuous feeding, precise control of small flow rates, and low cost. It also incorporates a slurry filtration system, a pressure display, automatic pressure relief, a level gauge, and a self-cleaning system, resulting in a fluidized bed granulation product with fewer impurities and a good particle size distribution.

Description

Technical Field

[0001] This utility model belongs to the field of fluidized granulation technology, specifically a feeding device for fluidized granulation. Background Technology

[0002] Fluidized bed granulation involves atomizing compressed air and a binder solution in a specific ratio through a nozzle and spraying it onto a fluidized bed of powdered material. The droplets wet the powder they come into contact with and cause it to coalesce around the powder, forming particle nuclei. Simultaneously, further sprayed droplets land on the surface of these nuclei, creating a bridging effect that allows the nuclei to combine with each other and with each other, gradually forming larger particles.

[0003] In fluidized bed granulation, peristaltic pumps provide power for slurry transport. However, due to the pulsating effect of peristaltic pumps, the slurry is fed intermittently, which in turn affects the particle size distribution and ultimately the material properties. Utility Model Content

[0004] In order to overcome the defects and deficiencies in the prior art, this utility model provides a feeding device for fluidized granulation that has the advantages of no pulse effect, continuous feeding, small flow rate precision control and low cost. It is also equipped with a slurry filtration system, pressure display, automatic pressure relief, level gauge and self-cleaning system, so that the product obtained by fluidized granulation has less impurities and good particle size distribution.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a feeding device for fluidized granulation, comprising a peristaltic pump, a pressure gauge, a filter tank, a buffer tank, a float level gauge, a gear pump, an atomizer, several adapters and valves. The upper end of the filter tank is connected to the peristaltic pump and the pressure gauge via a No. 1 tee. The pressure gauge is connected to the No. 1 tee, the float level gauge, and a pressure relief valve via a four-way valve. A slurry collection tank is connected to the right side of the pressure relief valve. The lower end of the filter tank is connected to the buffer tank. The lower end of the buffer tank is connected to the float level gauge and the gear pump via a No. 2 tee. The gear pump is connected to the atomizer. A filter screen is provided inside the filter tank. A water purification tank and a water treatment system are also connected to the gear pump.

[0006] Preferably, the No. 1 tee is located at the upper end of the filter pump, and the three ports of the No. 1 tee are respectively connected to the filter pump, the peristaltic pump and one of the ports of the No. 2 tee, and the peristaltic pump is connected to the left end of the No. 1 tee.

[0007] Preferably, the four-way valve is located at the lower end of the pressure gauge, and the four ports of the four-way valve are respectively connected to one of the pressure gauge, the float level gauge, the pressure relief valve and one port of the No. 1 three-way valve. The pressure relief valve is connected to the right end of the No. 2 three-way valve, and the float level gauge is connected to the left end of the four-way valve.

[0008] Preferably, the No. 2 tee is located at the lower end of the buffer tank, and the three ports of the No. 2 tee are respectively connected to the buffer tank, the float level gauge and the gear pump. The float level gauge is connected to the left end of the No. 3 tee, and the gear pump is connected to the right end of the No. 2 tee.

[0009] Preferably, the peristaltic pump is used to overcome the positive pressure of the atomizer, and the filter canister is used to filter large particles and other impurities in the slurry.

[0010] Preferably, the pressure gauge is used to monitor whether the filter screen in the filter tank is clogged, and the pressure relief valve is used to release pressure when the filter screen is clogged, so as to collect the slurry into the slurry collection tank connected to the pressure relief valve.

[0011] Preferably, the buffer tank is used to eliminate the pulse effect caused by the peristaltic pump; the float level gauge is used to observe the slurry level in the buffer tank in real time, and to determine whether material blockage has occurred at the downstream end by observing the level.

[0012] Preferably, the gear pump is used to provide power for conveying the slurry in the buffer tank to the atomizer. The gear pump is equipped with transfer valves at both the inlet and outlet ends. The water purification tank and the water treatment system are respectively connected to the transfer valves, and the water purification tank and the water treatment system are interconnected.

[0013] The following benefits can be achieved by adopting the technical solution of this utility model: This utility model has the advantages of no pulse effect, continuous feeding, small flow rate precision control and low cost. At the same time, it is also equipped with a slurry filtration system, pressure display, automatic pressure relief, level gauge and self-cleaning system, so that the product obtained by fluidized granulation has less impurities and good particle size distribution. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Among them: 1-transfer tank, 2-peristaltic pump, 3-pressure gauge, 4-pressure relief valve, 5-slurry collection tank, 6-filter tank, 7-buffer tank, 8-gear pump, 9-clean water tank, 10-water treatment system, 11-atomizer, 12-filter screen, 13-float level gauge. Detailed Implementation

[0016] 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.

[0017] This utility model provides the following technical solution:

[0018] Example 1

[0019] Please see Figure 1 A fluidized bed granulation feeding device includes a peristaltic pump 2, a pressure gauge 3, a filter tank 6, a buffer tank 7, a float level gauge 13, a gear pump 8, an atomizer 11, various adapters and valves. A No. 1 tee is located at the upper end of the filter tank 6, with its left end connected to the peristaltic pump 2. The top of the filter tank 6 is connected to the pressure gauge 3. A four-way valve is located below the pressure gauge 3, with its right end connected to a pressure relief valve 4. The lower end of the four-way valve is connected to the No. 1 tee, and its left end is connected to the float level gauge. A slurry collection tank 5 is located to the right of the pressure relief valve 4. The lower end of the filter tank 6 is connected to the buffer tank 7. A No. 2 tee is located at the lower end of the buffer tank 7, with its left end connected to the float level gauge 13 and its right end connected to the gear pump 8. The gear pump 8 is connected to the atomizer 11.

[0020] In this invention, the peristaltic pump 2 is mainly used to overcome the positive pressure of the atomizer, prevent slurry backflow, and overcome the potential difference generated by the slurry from bottom to top, thereby reducing the load on the gear pump 8 and enabling the gear pump 8 to achieve more precise small flow control.

[0021] In this invention, the filter tank 6 uses an internal filter screen (sieve) 12 to filter large particles and other impurities in the slurry.

[0022] In this practical application, the pressure gauge 3 and the pressure relief valve (active pressure relief) 4 mainly monitor whether the filter screen 12 in the filter tank 6 is blocked. If blockage occurs, the reading of the pressure gauge 3 rises rapidly, and the pressure relief valve 4 responds by actively releasing pressure, collecting the slurry into the slurry collection tank 5 connected to the pressure relief valve 4 to prevent slurry splashing.

[0023] In this invention, the buffer tank 7 can eliminate the pulse effect caused by the peristaltic pump 2.

[0024] In this practical application, the float level gauge 13 can observe the slurry level in the buffer tank 7 in real time, and can also determine whether there is a blockage at the downstream end by observing the liquid level. If a blockage occurs, the pressure gauge 3 reading rises rapidly, and the pressure relief valve 4 responds and actively releases pressure, collecting the slurry into the slurry collection tank 5 connected to the pressure relief valve 4 to prevent slurry splashing and achieve dual protection.

[0025] In this invention, the gear pump 8 provides power for transporting the slurry in the buffer tank 7 to the atomizer 11, and the gear pump 8 has advantages such as high flow control accuracy and no pulsation. The gear pump 8 is equipped with transfer valves at both its inlet and outlet ends, and the two transfer valves are respectively connected to a water purification tank 9 and a water treatment system 10. The water purification tank 9 and the water treatment system 10 are interconnected. After completing its work, the transfer valves can be opened to allow the gear pump 8 to self-circulate and clean itself, preventing blockage during the next use.

[0026] Example 2

[0027] The operation of a fluidized bed granulation feeding device is as follows: the slurry is transported from the transfer tank 1 to the filter tank 6 via the peristaltic pump 2. At this time, the filter tank 6 filters out a small portion of large particles. Then the slurry continues to flow from the filter tank 6 into the buffer tank 7. After the pulsation effect is eliminated in the buffer tank 7, the slurry is then transported to the atomizer 11 via the gear pump 8 to complete atomization. Through this feeding system, the feed flow rate is controlled within 0.5 to 20 L / h while overcoming the positive pressure in the drying chamber, so as to obtain smaller particles. Moreover, the continuous feeding results in a more concentrated particle size distribution of the product.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding device for fluidized bed granulation, characterized in that: It includes a peristaltic pump, a pressure gauge, a filter tank, a buffer tank, a float level gauge, a gear pump, an atomizer, several adapters and valves. The upper end of the filter tank is connected to the peristaltic pump and the pressure gauge via a No. 1 tee. The pressure gauge is connected to the No. 1 tee and a pressure relief valve via a No. 2 tee. A slurry collection tank is connected to the right side of the pressure relief valve. The lower end of the filter tank is connected to the buffer tank. The lower end of the buffer tank is connected to the float level gauge and the gear pump via a No. 3 tee. The gear pump is connected to the atomizer. A filter screen is installed inside the filter tank. A water purification tank and a water treatment system are also connected to the gear pump.

2. The feeding device for fluidized bed granulation according to claim 1, characterized in that: The No. 1 tee is located at the top of the filter pump. The three ports of the No. 1 tee are respectively connected to the filter pump, the peristaltic pump, and one of the ports of the No. 2 tee. The peristaltic pump is connected to the left end of the No. 1 tee.

3. The feeding device for fluidized bed granulation according to claim 1, characterized in that: The No. 2 tee is located at the lower end of the pressure gauge. The three ports of the No. 2 tee are respectively connected to the pressure gauge, the pressure relief valve, and one of the ports of the No. 1 tee. The pressure relief valve is connected to the right end of the No. 2 tee.

4. The feeding device for fluidized bed granulation according to claim 1, characterized in that: The No. 3 tee is located at the lower end of the buffer tank. The three ports of the No. 3 tee are respectively connected to the buffer tank, the float level gauge and the gear pump. The float level gauge is connected to the left end of the No. 3 tee and the gear pump is connected to the right end of the No. 3 tee.

5. The feeding device for fluidized bed granulation according to claim 1, characterized in that: The peristaltic pump is used to overcome the positive pressure of the atomizer, and the filter can is used to filter large particles and other impurities in the slurry.

6. The feeding device for fluidized granulation according to claim 1, characterized in that: The pressure gauge is used to monitor whether the filter screen in the filter tank is clogged, and the pressure relief valve is used to release pressure when the filter screen is clogged, so that the slurry is collected into the slurry collection tank connected to the pressure relief valve.

7. The feeding device for fluidized granulation according to claim 1, characterized in that: The buffer tank is used to eliminate the pulse effect caused by the peristaltic pump; the float level gauge is used to observe the slurry level in the buffer tank in real time, and to determine whether material blockage has occurred at the downstream end by observing the level.

8. The feeding device for fluidized granulation according to claim 1, characterized in that: The gear pump is used to provide power for transporting the slurry in the buffer tank to the atomizer. The gear pump is equipped with transfer valves at both the inlet and outlet ends. The water purification tank and the water treatment system are respectively connected to the transfer valves, and the water purification tank and the water treatment system are interconnected.

Images