Powder pneumatic conveying pump

Abstract

The utility model provides a powder pneumatic conveying pump which comprises a conveying pump body, and a feeding pipe is fixed to the side face of the conveying pump body. A motor is mounted at the top of the conveying pump body, a main rotating shaft is fixedly connected to the output end of the motor, and a main gear sleeves the main rotating shaft; the main gear is externally meshed with a driven wheel, the driven wheel sleeves a driven shaft, and the driven shaft is rotationally fixed on the inner wall of the conveying pump body through a bearing; a plurality of swinging hands are mounted on the outer side of the driven shaft; spiral blades are fixed on the main rotating shaft; the lower portion of the conveying pump body is communicated with a discharging cavity, the discharging cavity is conical, the periphery of the discharging cavity is communicated with a second air source channel, spraying pipes are installed on the periphery of the discharging cavity, and the second air source channel is communicated with the spraying pipes. The bottom of the discharging cavity is connected with a conveying pipe, and the conveying pipe is connected with a first air source channel. And a rotating circle formed when the swinging hand rotates and a rotating circle formed when the spiral blade rotates are in an outward separation state. According to the novel pneumatic conveying pump, materials are prevented from being bonded in the pump, and rapid discharging of the materials is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic conveying equipment, in particular to a powder pneumatic conveying pump. Background Technique

[0002] Pneumatic conveying, also known as air conveying, is to utilize the energy of air flow to convey granular materials along the air flow direction in a closed pipeline, which is a specific application of fluidization technology. Powder pneumatic conveying is to mix powder and granular materials with air to form a gas-solid mixture with a specific concentration, and under the action of pressure difference, enter the conveying pipeline to push the gas-solid mixture forward along the pipeline.

[0003] Since pneumatic conveying realizes material transportation by applying pneumatic force to the conveyed material through air flow to push the material to move, the pneumatic force provided by the pneumatic conveying device is limited. When the conveyed material contains agglomerated particles, due to the large mass, various shapes and different sizes of the agglomerated particles, these particles are extremely easy to accumulate and block the conveying pump body and the conveying pipeline after entering the conveying pump body. It is difficult for the powder to form a continuous, uniform and dense material plug. Coupled with the relatively high pressure of the compressed air in the mixing chamber, air-material backflow is extremely easy to occur. Therefore, we propose a powder pneumatic conveying pump. Content of the Utility Model

[0004] Aiming at the problems in the prior art, the utility model proposes a powder pneumatic conveying pump, which prevents the material from sticking in the pump and realizes the rapid feeding of the material.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A powder pneumatic conveying pump, comprising:

[0007] A conveying pump body, with a feed pipe fixed on its side;

[0008] A motor is installed on the top of the conveying pump body, a main rotating shaft is fixedly connected to the output end of the motor, and a main gear is sleeved on the main rotating shaft; the main gear is externally engaged with a driven wheel, the driven wheel is sleeved on a driven shaft, and the driven shaft is rotationally fixed on the inner wall of the conveying pump body through a bearing; a plurality of swing hands are installed on the outer side of the driven shaft; a spiral blade is fixed on the main rotating shaft; a blanking cavity is communicated below the conveying pump body, the blanking cavity is conical, a second air source channel is communicated with the outer periphery of the blanking cavity, spray pipes are installed around the blanking cavity, and the second air source channel is communicated with the spray pipes; a conveying pipe is connected to the bottom of the blanking cavity, and the conveying pipe is connected with a first air source channel;

[0009] Wherein, the rotation circle formed when the swing hand rotates and the rotation circle formed when the spiral blade rotates are in an externally separated state.

[0010] As a further improvement of this solution, a reserved port is arranged on the surface of the conveying pipe, and the reserved port is located at the lower end of the blanking cavity.

[0011] As a further improvement of this solution, the waving hand is in a "∩" shape, and the opening of the "∩" shape faces the driven shaft.

[0012] As a further improvement of this solution, the sizes and shapes of multiple waving hands are the same, and the positions of multiple waving hands fixed on the driven shaft are not completely the same.

[0013] As a further improvement of this solution, the bending radian range of the bending section of the waving hand is 20° to 90°.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present novel rotates multiple waving hands synchronously in the conveying pump body, stirs the powder while the spiral blade cuts, and the particles in the powder are fully stirred and cut, avoiding adhesion to the inner wall of the pump body and affecting the conveying efficiency. At the same time, a conical blanking cavity is provided between the pump body and the conveying pipeline, and a gas source channel is added to cooperate with a nozzle to spray the conical blanking cavity, avoiding blockage of the blanking cavity and realizing rapid blanking of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below with reference to the accompanying drawings.

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the internal structure of the conveying pump body of the present utility model;

[0018] Figure 3 is a schematic three-dimensional structure diagram of the waving hand of the present utility model;

[0019] Figure 4 is a schematic sectional structure diagram of the waving hand of the present utility model.

[0020] In the figure, it is marked that 1, conveying pump body; 2, motor; 3, feed pipe; 4, blanking cavity; 5, first gas source channel; 6, second gas source channel; 21, main rotating shaft; 22, spiral blade; 23, driven shaft; 24, waving hand; 211, main gear; 231, bearing; 232, driven wheel; 61, nozzle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0022] As Figures 1-4 shown, this embodiment provides a powder pneumatic conveying pump, which includes a conveying pump body 1, and a feed pipe 3 is fixed on the side of the conveying pump body 1.

[0023] A motor 2 is installed on the top of the conveying pump body 1. A main rotating shaft 21 is fixedly connected to the output end of the motor 2. A main gear 211 is sleeved on the main rotating shaft 21; the main gear 211 is externally meshed with a driven wheel 232. The driven wheel 232 is sleeved on a driven shaft 23, and the driven shaft 23 is rotationally fixed on the inner wall of the conveying pump body 1 through a bearing 231; a plurality of swinging hands 24 are installed outside the driven shaft 23; a spiral blade 22 is fixed on the main rotating shaft 21; a blanking cavity 4 is communicated below the conveying pump body 1. The blanking cavity 4 is conical. A second air source channel 6 is communicated with the outer periphery of the blanking cavity 4. Nozzles 61 are installed around the blanking cavity 4. The second air source channel 6 is communicated with the nozzles 61; a conveying pipe is connected to the bottom of the blanking cavity 4, and the conveying pipe is connected with a first air source channel 5.

[0024] When the swinging hand 24 rotates, the rotation circle formed is in an externally separated state from the rotation circle formed when the spiral blade 22 rotates.

[0025] A reserved port is arranged on the surface of the conveying pipe, and the reserved port is located at the lower end of the blanking cavity 4. The powder material enters the conveying pipe through the reserved port at the lower end of the blanking cavity 4.

[0026] During specific operation, the powder material enters the inside of the conveying pump body 1 through the feed pipe 3. At this time, the motor 2 is started. The motor 2 drives the main rotating shaft 21 to rotate. The spiral blade 22 on the main rotating shaft 21 cuts the powder material. Synchronously, the main gear 211 on the main rotating shaft 21 drives the driven wheel 232 to rotate; the driven wheel 232 drives the driven shaft 23 to rotate, and a plurality of swinging hands 24 installed outside the driven shaft 23 stir the powder material synchronously; the pulverized powder material after cutting is sent into the blanking cavity 4 through the conveying pump body 1. The conical shape of the blanking cavity 4 is conducive to blanking. A second air source channel 6 is communicated with the outer periphery of the blanking cavity 4. Nozzles 61 are installed around the blanking cavity 4. The second air source channel 6 is communicated with the nozzles 61 to spray downward air flow into the blanking cavity 4, effectively preventing the material from blocking the blanking cavity 4; finally, the material enters the conveying pipe through the reserved port arranged on the surface of the conveying pipe, and the first air source channel 5 conveys the powder by air power.

[0027] By rotating a plurality of swinging hands synchronously inside the conveying pump, while the spiral blade cuts, the powder is stirred, and the particles in the powder are fully stirred and cut, avoiding adhesion to the inner wall of the pump body and affecting the conveying efficiency. At the same time, a conical blanking cavity is arranged between the pump body and the conveying pipeline. By adding an air source channel and cooperating with the nozzles to spray the conical blanking cavity, the blanking cavity is prevented from being blocked, and rapid blanking of the material is realized. Embodiment 2

[0028] This embodiment provides a powder pneumatic conveying pump, whose structure is basically the same as that of Embodiment 1. The difference is that, on the basis of Embodiment 1, this embodiment further discloses the shape of the swinging arm 24. The swinging arm 24 is in an "∩" shape, and the opening of the "∩" shape faces the driven shaft 23. The multiple swinging arms 24 are the same in size and shape, and the positions of the multiple swinging arms 24 fixed on the driven shaft 23 are not completely the same. The bending radian range of the bending section of the swinging arm 24 is 20° to 90°. The "∩"-shaped swinging arm 24 can well generate a stirring force and is not easy to adhere to the powder material. The multiple swinging arms 24 are staggered from each other, and the bending radian range of the bending section is 20° to 90°, which has a good stirring effect on the powder particles.

[0029] The above content is only an example of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements or use similar methods to replace the specific embodiments described. As long as they do not deviate from the structure of the present invention or exceed the scope defined by this claim, they should fall within the protection scope of the present invention.

Claims

1. A powder pneumatic conveying pump, comprising: A conveying pump body (1) with a feed pipe (3) fixed to its side; It is characterized in that: a motor (2) is installed at the top of the conveying pump body (1), a main rotating shaft (21) is fixedly connected to the output end of the motor (2), and a main gear (211) is sleeved on the main rotating shaft (21); the main gear (211) is externally engaged with a driven wheel (232), the driven wheel (232) is sleeved on a driven shaft (23), and the driven shaft (23) is rotationally fixed to the inner wall of the conveying pump body (1) through a bearing (231); a plurality of swing arms (24) are installed on the outside of the driven shaft (23); a spiral blade (22) is fixed on the main rotating shaft (21); a blanking cavity (4) is communicated below the conveying pump body (1), the blanking cavity (4) is conical, a second air source channel (6) is communicated with the outer circumference of the blanking cavity (4), spray pipes (61) are installed around the blanking cavity (4), and the second air source channel (6) is communicated with the spray pipes (61); a conveying pipe is connected to the bottom of the blanking cavity (4), and the conveying pipe is connected with a first air source channel (5); Wherein, the rotation circle formed when the swing arm (24) rotates and the rotation circle formed when the spiral blade (22) rotates are in a separated state.

2. The powder pneumatic conveying pump according to claim 1, characterized in that, A reserved port is provided on the surface of the conveying pipe, and the reserved port is located at the lower end of the blanking cavity (4).

3. A powder pneumatic conveying pump according to claim 1, characterized in that, The swing arm (24) is in an "∩" shape, and the opening of the "∩" shape faces the driven shaft (23).

4. A powder pneumatic conveying pump according to claim 1, characterized in that, The plurality of swing arms (24) are the same in size and shape, and the positions of the plurality of swing arms (24) fixed on the driven shaft (23) are not completely the same.

5. A powder pneumatic conveying pump according to claim 1, characterized in that, The bending radian range of the bending section of the swing arm (24) is 20° to 90°.

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