Powder raw material pneumatic conveying device

Abstract

The utility model relates to the field of powder conveying, and discloses a powder raw material pneumatic conveying device which comprises a stock bin, a bag breaking mechanism is installed on the top of the stock bin and communicated with the top of the stock bin, a discharging pipe is fixedly communicated with the bottom of the stock bin, and a rotary valve is fixedly installed in the middle of the discharging pipe. A powder metering pump is fixedly installed on the left side wall of the rotary valve, an output shaft of the powder metering pump is fixedly connected with the rotary valve, a draught fan is arranged below the discharging pipe, an air outlet of the draught fan is fixedly communicated with the left end of the conveying pipe, and the inner wall of an air inlet of the draught fan is fixedly connected with a filter screen. And a cyclone separator is fixedly mounted at the top of the feeding pipe. The whole conveying process is carried out in a closed pipeline and equipment, so that powder leakage and pollution are effectively prevented; through accurate control of the powder metering pump and the rotary valve, accurate adjustment of the powder output amount can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of powder conveying, and specifically to a powder raw material pneumatic conveying device. BACKGROUND

[0002] Pneumatic conveying, also known as airflow conveying, is a specific application of fluidization technology that utilizes the energy of airflow to convey particulate materials in a closed pipeline along the airflow direction. It can be used to convey solid particulate materials such as starch and protein. The pneumatic conveying device has the advantages of simple structure and easy operation. During the production and processing of powder, a pneumatic conveying pump is needed to convey the food powder raw materials.

[0003] The current powder conveying process involves manually unpacking the packaged materials, then weighing a certain amount of food powder raw materials according to production requirements, and then manually or mechanically feeding the powder raw materials into a mixing tank. However, this process has the following disadvantages in actual production:

[0004] 1. Dust is easily generated during the operation process;

[0005] 2. Manual operation has weighing errors and poor measurement accuracy;

[0006] 3. Personnel operation is complex, and the labor cost is high. CONTENT OF THE UTILITY MODEL

[0007] In order to overcome the above-mentioned shortcomings, the utility model provides a powder raw material pneumatic conveying device.

[0008] The technical scheme adopted by the utility model is as follows:

[0009] A powder raw material pneumatic conveying device, comprising a stock bin, a bag breaking mechanism is installed on the top of the stock bin, the bag breaking mechanism is in communication with the top of the stock bin, the inside of the stock bin has a filter plate, the filter plate is inclined from the back top to the front bottom, the filter plate is fixedly connected with the inner wall of the stock bin, the front side middle part of the stock bin is open, a bin door is rotatably installed in the front side opening of the stock bin, the bin door is located above the front end of the filter plate, a discharge pipe is fixedly and communicatively connected to the bottom of the stock bin, a rotary valve is fixedly installed in the middle part of the discharge pipe, a powder metering pump is fixedly installed on the left side wall of the rotary valve, the output shaft of the powder metering pump is fixedly connected with the rotary valve, a fan is located below the discharge pipe, the air outlet of the fan is fixedly and communicatively connected to the left end of a material conveying pipe, a filter screen is fixedly connected to the inner wall of the air inlet of the fan, a stirring tank is located on the right side of the stock bin, a feed pipe is fixedly and communicatively connected to the top left side of the stirring tank, a cyclone separator is fixedly installed on the top of the feed pipe, the bottom of the cyclone separator is in communication with the feed pipe, a feed inlet is formed on the left side top of the outer wall of the cyclone separator, and the right end of the material conveying pipe extends to the left side of the cyclone separator and is fixedly and communicatively connected to the feed inlet.

[0010] The bag-breaking mechanism includes a bag-breaking box with a feeding port at the top, which is connected to a feeding device. The bottom of the bag-breaking box is connected to a hopper. A rotating shaft is rotatably connected between the middle of the left and right inner walls of the bag-breaking box. The left end of the rotating shaft extends through the left side wall of the bag-breaking box. Several bag-breaking knives are fixedly sleeved on the outer wall of the rotating shaft. The bag-breaking knives are equidistantly distributed on the left and right sides. A motor is located on the left side of the bag-breaking box. The motor is fixedly installed on the top of the hopper. The right end of the output shaft of the motor is fixedly connected to the left end of the rotating shaft.

[0011] The top of the cyclone separator is fixedly connected to a top cover, the bottom of which is sealed. The top of the top cover is fixedly connected to an air outlet pipe, and the bottom of the top cover is fixedly connected to a frame. The frame consists of two rings and four vertical rods. The two rings are distributed vertically, and the four vertical rods are evenly fixedly connected between the two rings. The frame extends downward to the lower inner side of the cyclone separator. The top of the frame passes through the top cover and connects to the air outlet pipe. A filter bag is fixedly fitted onto the outer wall of the frame. An air tank is fixedly installed on the right side of the outer wall of the cyclone separator. The left end of the air tank is fixedly connected to a blowpipe. The left end of the blowpipe passes through the filter bag and extends to the inner side of the frame. A pulse solenoid valve is installed on the blowpipe.

[0012] Motor 2 is fixedly installed at the top center of the mixing tank. The mixing tank has a stirring shaft inside. The top end of the stirring shaft is rotatably connected to the inner top wall of the mixing tank. The top end of the stirring shaft passes through the top of the mixing tank. The top end of the stirring shaft is fixedly connected to the bottom end of the output shaft of Motor 2. Several stirring rods are fixedly connected to the outer wall of the stirring shaft. The stirring rods are evenly distributed.

[0013] A vent pipe is fixedly connected to the top of the mixing tank, and a filter is fixedly installed at the top of the vent pipe. A discharge pipe is fixedly connected to the bottom of the mixing tank, and a valve is installed inside the discharge pipe.

[0014] The beneficial effects of this utility model are:

[0015] The entire conveying process of this invention is carried out in a closed pipeline and equipment, which effectively prevents powder leakage and contamination.

[0016] Precise control of the powder metering pump and rotary valve allows for precise adjustment of the powder output.

[0017] From feeding to discharging, the entire process is automated, reducing manual intervention and improving production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 yes Figure 1 Cross-sectional view at point AA;

[0020] Figure 3 This is a schematic diagram of the structure of the cyclone separator of this utility model.

[0021] The specific reference numerals in all the attached drawings are as follows: 1. Hopper; 2. Bag-breaking box; 3. Feeding port; 4. Rotating shaft; 5. Bag-breaking knife; 6. Motor 1; 7. Filter plate; 8. Hopper door; 9. Feeding pipe; 10. Rotary valve; 11. Powder metering pump; 12. Conveying pipe; 13. Blower; 14. Filter screen; 15. Mixing box; 16. Feeding pipe; 17. Cyclone separator; 18. Feeding port; 19. Top cover; 20. Air outlet pipe; 21. Frame; 22. Filter bag; 23. Air tank; 24. Blowing pipe; 25. Pulse solenoid valve; 26. Motor 2; 27. Mixing shaft; 28. Mixing rod; 29. ​​Vent pipe; 30. Discharge pipe; 31. Valve. Detailed Implementation

[0022] like Figures 1-3 As shown: A pneumatic conveying device for powder raw materials includes a hopper 1. A bag-breaking mechanism is installed on the top of the hopper 1 and is connected to the top of the hopper 1. The hopper 1 has a filter plate 7 inside, which is inclined from the rear top to the front bottom. The filter plate 7 is fixedly connected to the inner wall of the hopper 1. The hopper 1 has an opening in the middle of its front side, and a door 8 is rotatably installed in the opening. The door 8 is located above the front end of the filter plate 7. The bottom of the hopper 1 is fixedly connected to a discharge pipe 9. A rotary valve 10 is fixedly installed in the middle of the discharge pipe 9. A powder metering pump 11 is fixedly installed on the left side wall of the rotary valve 10. The powder metering pump 11 delivers... The output shaft is fixedly connected to the rotary valve 10. Below the feed pipe 9 is a blower 13. The air outlet of the blower 13 is fixedly connected to the left end of the feed pipe 12. The inner wall of the air inlet of the blower 13 is fixedly connected to the filter screen 14. The right side of the hopper 1 is a mixing box 15. The top left side of the mixing box 15 is fixedly connected to the feed pipe 16. The top of the feed pipe 16 is fixedly installed with a cyclone separator 17. The bottom of the cyclone separator 17 is connected to the feed pipe 16. The top left side of the outer wall of the cyclone separator 17 has a feed inlet 18. The right end of the feed pipe 12 extends to the left side of the cyclone separator 17 and is fixedly connected to the feed inlet 18.

[0023] The bag breaking mechanism includes a bag breaking box 2, with a feeding port 3 at the top of the bag breaking box 2, which is connected to the feeding equipment. The bottom of the bag breaking box 2 is connected to the hopper 1. A rotating shaft 4 is rotatably connected between the middle of the left and right inner walls of the bag breaking box 2. The left end of the rotating shaft 4 extends through the left side wall of the bag breaking box 2. Several bag breaking knives 5 are fixedly sleeved on the outer wall of the rotating shaft 4. The bag breaking knives 5 are evenly distributed on the left and right sides. A motor 6 is located on the left side of the bag breaking box 2. The motor 6 is fixedly installed on the top of the hopper 1. The right end of the output shaft of the motor 6 is fixedly connected to the left end of the rotating shaft 4.

[0024] The top of the cyclone separator 17 is fixedly connected with a top cover 19, the bottom of the top cover 19 is sealed, the top of the top cover 19 is fixedly connected with an air outlet pipe 20, the bottom of the top cover 19 is fixedly connected with a frame 21, the frame 21 is composed of two annular rings and four vertical rods, the two annular rings are distributed above and below, the four vertical rods are fixedly connected between the two annular rings, the frame 21 extends downward to the inner side of the lower part of the cyclone separator 17, the top of the frame 21 penetrates through the top cover 19 and communicates with the air outlet pipe 20, the outer wall of the frame 21 is fixedly sleeved with a filter bag 22, the outer wall of the right side of the cyclone separator 17 is fixedly installed with an air pocket 23, the left end of the air pocket 23 is fixedly connected with a blowing pipe 24, the left end of the blowing pipe 24 extends to the inner side of the frame 21 through the filter bag 22, and the blowing pipe 24 is provided with a pulse electromagnetic valve 25.

[0025] A second motor 26 is fixedly installed at the middle of the top of the stirring box 15, the stirring box 15 is provided with a stirring shaft 27, the top end of the stirring shaft 27 is rotatably connected with the inner top wall of the stirring box 15, the top end of the stirring shaft 27 penetrates through the top of the stirring box 15, the top end of the stirring shaft 27 is fixedly connected with the bottom end of the output shaft of the second motor 26, the outer wall of the stirring shaft 27 is fixedly connected with a plurality of stirring rods 28, and the stirring rods 28 are uniformly distributed.

[0026] The top of the stirring box 15 is fixedly connected with an air pipe 29, the top end of the air pipe 29 is fixedly installed with a filter, the bottom of the stirring box 15 is fixedly connected with a discharge pipe 30, and the discharge pipe 30 is installed with a valve 31.

[0027] The stirred powder is discharged through the discharge pipe 30, and the discharge flow is controlled by the valve 31.

[0028] The powder raw material is put into the feeding opening 3 of the bag breaking box 2 through a feeding device, the first motor 6 is started to drive the rotating shaft 4 and the bag breaking knife 5 fixed on the rotating shaft 4 to rotate, the bagged powder raw material put in is cut to fall into the hopper 1.

[0029] The powder raw material falls into the hopper 1 through the bag breaking mechanism, falls on the inclined filter plate 7, the filter plate 7 filters out the large impurities or the bag pieces not completely broken in the powder, and the powder continues to slide to the lower side of the filter plate 7 and falls into the discharge pipe 9.

[0030] The door 8 is opened when needed to facilitate the user to clean the impurities on the filter plate 7.

[0031] The powder metering pump 11 controls the flow of the powder in the discharge pipe 9 through the rotary valve 10.

[0032] The fan 13 is started to generate airflow, and the powder is transported from the hopper 1 to the cyclone separator 17 through the conveying pipe 12.

[0033] After the powder enters the cyclone separator 17, the heavier powder particles are separated out and fall into the stirring box 15.

[0034] The lighter gas and fine dust are discharged through the gas outlet pipe 20 and further filtered by the filter bag 22.

[0035] The pulse electromagnetic valve 25 is periodically opened to blow off the dust on the filter bag 22 through the blowing pipe 24, so as to maintain the filtering efficiency.

[0036] The motor two 26 is started to drive the stirring shaft 27 and the stirring rod 28 to rotate, so as to mix the powder in the stirring box 15.

[0037] The utility model only protects the mechanical part, and the function realized by the software control part related thereto is not in the protection range of the utility model.

Claims

1. A powder feedstock pneumatic conveying apparatus characterized by, The utility model provides a kind of powder feeding device, including bin (1), the top of bin (1) is equipped with bag breaking mechanism, bag breaking mechanism is communicated with the top of bin (1), the inside of bin (1) is equipped with filter plate (7), filter plate (7) is inclined from rear top to front bottom, filter plate (7) is fixedly connected with the inner wall of bin (1), the front side middle part of bin (1) is opened, the front side opening of bin (1) is rotatably equipped with bin door (8), bin door (8) is located in the front end of filter plate (7) upper side, the bottom of bin (1) is fixedly communicated with the discharge pipe (9) of bin (1), the middle part of discharge pipe (9) is fixedly equipped with rotary valve (10), the left side wall of rotary valve (10) is fixedly equipped with powder metering pump (11), the output shaft of powder metering pump (11) is fixedly connected with rotary valve (10), the below of discharge pipe (9) is equipped with fan (13), the left end of air outlet of fan (13) is fixedly communicated with the left end of feed pipe (12), the inner wall of air inlet of fan (13) is fixedly connected with filter screen (14), the right side of bin (1) is equipped with stirring box (15), the top left side of stirring box (15) is fixedly communicated with feed pipe (16), the top of feed pipe (16) is fixedly equipped with cyclone separator (17), the bottom of cyclone separator (17) is communicated with feed pipe (16), the outer wall left side top of cyclone separator (17) is equipped with feed inlet (18), the right end of feed pipe (12) extends to the left side of cyclone separator (17) and is fixedly communicated with feed inlet (18).

2. A powder material pneumatic conveying apparatus according to claim 1, wherein The bag breaking mechanism includes bag breaking box (2), the top of bag breaking box (2) is equipped with feeding port (3), feeding port (3) is communicated with feeding equipment, the bottom of bag breaking box (2) is communicated with bin (1), the left and right inner walls of bag breaking box (2) are rotatably connected with rotating shaft (4) between middle part, the left end of rotating shaft (4) penetrates the left side wall of bag breaking box (2), the outer wall of rotating shaft (4) is fixedly sleeved with a plurality of bag breaking knives (5), bag breaking knives (5) are equidistantly distributed, the left side of bag breaking box (2) is equipped with motor one (6), motor one (6) is fixedly installed on the top of bin (1), the right end of output shaft of motor one (6) is fixedly connected with the left end of rotating shaft (4).

3. A powder material pneumatic conveying apparatus according to claim 1, wherein The top of cyclone separator (17) is fixedly connected with top cover (19), the bottom of top cover (19) is sealed, the top of top cover (19) is fixedly communicated with air outlet pipe (20), the bottom of top cover (19) is fixedly connected with frame (21), frame (21) is composed of two annulars and four vertical rods, two annulars are distributed in upper and lower, four vertical rods are fixedly connected between two annulars, frame (21) extends to the inside lower part of cyclone separator (17) downwards, the top of frame (21) penetrates top cover (19) and is communicated with air outlet pipe (20), the outer wall of frame (21) is fixedly sleeved with filter bag (22), the right side of the outer wall of cyclone separator (17) is fixedly installed with gas pocket (23), the left end of gas pocket (23) is fixedly communicated with injection pipe (24), the left end of injection pipe (24) penetrates filter bag (22) and extends to the inside of frame (21), injection pipe (24) is installed with pulse solenoid valve (25).

4. A powder material pneumatic conveying apparatus according to claim 1, wherein A motor two (26) is fixedly installed in the middle of the top of the stirring box (15), the stirring box (15) has a stirring shaft (27), the top end of the stirring shaft (27) is rotatably connected with the inner top wall of the stirring box (15), the top end of the stirring shaft (27) penetrates through the top of the stirring box (15), the top end of the stirring shaft (27) is fixedly connected with the bottom end of the output shaft of the motor two (26), the outer wall of the stirring shaft (27) is fixedly connected with a plurality of stirring rods (28), and the stirring rods (28) are uniformly distributed.

5. A powder feedstock pneumatic conveying apparatus according to claim 4, wherein A ventilation pipe (29) is fixedly communicated with the top of the stirring box (15), a filter is fixedly installed at the top end of the ventilation pipe (29), the bottom of the stirring box (15) is fixedly communicated with a discharge pipe (30), and a valve (31) is installed in the discharge pipe (30).

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