Curve powder selecting machine and powder selecting system

Abstract

The utility model relates to the technical field of screening of materials such as petroleum fracturing sand and metal crushing separated objects, in particular to a curve powder concentrator and a powder concentrating system, which comprise a powder concentrator body in a broken line pipeline shape and a feed pipe fixed on the side wall of the powder concentrator body, and a distributor is mounted at the top of the feed pipe. A plurality of partition plate faces which are sequentially and continuously turned are arranged in the powder concentrator body in the height direction, a first air locking valve for preventing air in the powder concentrator body from being discharged out of the feeding pipe is installed in the feeding pipe, an air outlet pipe is fixed to the top of the powder concentrator body, and an air inlet pipe arranged in the horizontal direction is fixed to the bottom of the powder concentrator body. A discharging pipe is fixed to the bottom of the air inlet pipe and communicates with the bottom of the powder concentrator body, coarse particle materials in the powder concentrator body are discharged out of the discharging pipe, and a second air locking valve is installed in the discharging pipe. According to the utility model, the technical effect that coarse particles and fine particles in the materials can be easily separated by adopting a manner of winnowing and scrubbing the materials for multiple times is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening materials such as petroleum fracturing sand and metal crushing separation, in particular to a curve powder classifier and a powder classifier system. Background Art

[0002] The powder classifier is a device that separates coarse and fine particles of materials. When using a traditional powder classifier to separate coarse and fine particles of materials with a moisture content of 2%, the coarse and fine particles are not clearly separated, and a large number of fine particles that are difficult to peel off are attached to the surface of the coarse particles, which affects the product quality. Utility Model Content

[0003] The embodiment of the utility model provides a curve powder selection machine and a powder selection system, which can easily separate coarse particles and fine particles in the material by multiple wind scrubbing.

[0004] The utility model is a curve powder separator, which adopts the following technical scheme:

[0005] A curved powder classifier comprises a powder classifier body in the shape of a broken line pipeline and a feed pipe fixed on the side wall of the powder classifier body, a distributor is installed on the top of the feed pipe, a plurality of partition surfaces which are turned in sequence in a continuous manner are arranged in the height direction inside the powder classifier body, a first air lock valve is installed in the feed pipe to prevent the wind inside the powder classifier body from being discharged from the feed pipe, an air outlet pipe is fixed on the top of the powder classifier body, an air inlet pipe arranged in a horizontal direction is fixed on the bottom of the powder classifier body, a discharge pipe is fixed on the bottom of the air inlet pipe, the discharge pipe is connected with the bottom of the powder classifier body, the coarse particle material in the powder classifier body is discharged from the discharge pipe, and a second air lock valve is installed in the discharge pipe.

[0006] Furthermore, a plurality of guide plates are installed on the inner wall of the distributor, and the distance between two adjacent guide plates can be adjusted.

[0007] The utility model also discloses a powder selection system, which adopts the following technical scheme:

[0008] A powder selection system comprises a curved powder selection machine, a cyclone dust collector group is arranged on one side of the powder selection machine body, a blower fan is arranged between the cyclone dust collector group and the powder selection machine body, a first powder selection pipeline is fixed between the cyclone dust collector group and the air outlet pipe, a second powder selection pipeline is fixed between the top of the cyclone dust collector group and the air inlet of the blower fan, a back-blowing air inlet pipeline is arranged at the air outlet of the blower fan, and the back-blowing air inlet pipeline is connected to the air inlet pipeline.

[0009] Furthermore, a third powder selection pipe is connected to the air outlet of the induced draft fan, and a bag dust collector is connected to one end of the third powder selection pipe away from the induced draft fan. An air distribution valve is installed at the air outlet of the induced draft fan. Part of the wind blown out by the induced draft fan enters the powder selection machine body through the back-blowing air inlet pipe, and the other part enters the bag dust collector through the third powder selection pipe.

[0010] Compared with the prior art, the utility model has the following technical effects:

[0011] In the utility model, the fracturing sand undergoes multiple tortuous falls and collisions in the powder classifier, which prolongs the retention time of the material in the powder classifier, and the turbidity of the fracturing sand meets the requirements after multiple scrubbings. There are metals such as copper, iron, and aluminum in the metal crushing and separation materials, as well as a large amount of light materials such as wood chips, plastics, and wire skins, which need to be repeatedly scrubbed and separated. In the utility model, the materials collide repeatedly, which accelerates the falling speed of the materials. Each turning and falling is repeatedly scrubbed by the air surface and the rising airflow to ensure the cleanliness of the surface of the coarse particles and separate the light materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present invention, and do not constitute a limitation of the present invention. In the drawings:

[0013] Figure 1 A schematic diagram of a curve powder separator in the utility model;

[0014] Figure 2 This is a front view of the material distributor in the utility model;

[0015] Figure 3 A schematic diagram showing the guide plate inside the distributor of the utility model;

[0016] Figure 4 This is a left side view of the material distributor in the utility model;

[0017] Figure 5 It is a schematic diagram of the powder selection system of the utility model.

[0018] Explanation of the reference numerals: 1. powder selection machine body; 11. partition surface; 12. air inlet pipe; 13. air outlet pipe; 14. feed pipe; 2. distributor; 141. first air lock valve; 21. guide plate; 22. observation door; 3. induced draft fan; 31. third powder selection pipeline; 32. air distributor valve; 33. back-blowing air inlet pipeline; 4. cyclone dust collector group; 41. first powder selection pipeline; 42. second powder selection pipeline; 5. bag dust collector; 6. discharge pipe; 61. second air lock valve. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the implementation mode and the accompanying drawings. Here, the schematic implementation mode of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0020] Reference Figure 1-Figure 4 A curved powder classifier comprises a powder classifier body 1, which is a zigzag pipeline. A plurality of partition surfaces 11 which are turned in sequence in a continuous manner are arranged in the internal height direction of the powder classifier body 1. A distributor 2 is arranged on one side of the powder classifier body 1. A feed pipe 14 is fixed on the side wall of the powder classifier body 1, and the distributor 2 is fixed above the feed pipe 14.

[0021] A first air lock valve 141 is installed inside the feed pipe 14. The first air lock valve 141 prevents the circulating air from blowing out in the opposite direction of the material. The material enters the feed pipe 14 through the distributor 2, and pushes the first air lock valve 141 open under the action of the material gravity and enters the powder selector body 1.

[0022] The feed end opening of the distributor 2 is smaller than the discharge end opening, and a plurality of guide plates 21 are installed on the inner wall of the distributor 2 by bolts, and the plurality of guide plates 21 are evenly distributed along the length direction of the inner wall of the distributor 2, and a plurality of bolt holes are provided on the inner wall of the distributor 2, and the distance between the guide plates 21 and the guide plates 21 can be adjusted. The material enters the distributor 2 from the feed inlet, and the material falls on the guide plate 21, and the material passes between the guide plates 21 and the guide plates 21 or between the guide plate 21 and the inner wall of the distributor 2, so that the piled material is dispersed, and the material passes through the feed pipe 14 and evenly falls into the powder selector body 1.

[0023] Two observation doors 22 are installed on the side wall of the distributor 2 away from the guide plate 21. One side of the observation door 22 is hinged to the side wall of the distributor 2 through a hinge, and the other side of the observation door 22 is locked and fixed to the side wall of the distributor 2 through a locking piece.

[0024] An air outlet pipe 13 is fixed on the top of the powder classifier body 1, an air inlet pipe 12 is fixed on the bottom of the powder classifier body 1, the air inlet pipe 12 is arranged horizontally, a discharge pipe 6 is fixed on the bottom of the air inlet pipe 12, the discharge pipe 6 is connected to the bottom of the powder classifier body 1, and a second air lock valve 61 is installed inside the discharge pipe 6.

[0025] When screening the material, the material is put into the distributor 2 from the feeding port of the distributor 2, and the material passes through the first air lock valve 141 in the feed pipe 14 and enters the powder selector body 1. The material entering the powder selector body 1 slides down along the partition surface 11 under the action of gravity, and slides from one partition surface 11 to the opposite partition surface 11. In this process, the materials collide with each other many times. When the material is in the air, the wind blown from the air inlet pipe 12 forms an angle of 30-70 degrees with the material (this angle can vary according to different materials). At this angle, the material is scrubbed, and the fine particles and the fine particles on the surface of the coarse particles are peeled off and rise. Finally, the fine particles and wind are discharged from the outlet pipe 13, and the coarse particles are discharged from the outlet pipe 6.

[0026] Reference Figure 5 The utility model also discloses a powder selection system, including the above-mentioned powder selection machine, a cyclone dust collector group 4 is arranged on one side of the powder selection machine body 1, a blower fan 3 is arranged between the cyclone dust collector group 4 and the powder selection machine body 1, and a first powder selection pipeline 41 is fixed between the top of the cyclone dust collector group 4 and the air outlet pipe 13. A second powder selection pipeline 42 is fixedly connected between the top side wall of the cyclone dust collector group 4 and the blower fan 3.

[0027] The air outlet of the induced-air blower 3 is connected with a third powder selection pipe 31 and a back-blowing air inlet pipe 33. The end of the back-blowing air inlet pipe 33 away from the induced-air blower 3 is connected with the air inlet pipe 12. An air dividing valve 32 is installed at the air outlet of the induced-air blower 3. A part of the air blown out by the induced-air blower 3 enters the powder selection machine body 1 through the back-blowing air inlet pipe 33, and the other part enters the bag dust collector 5 through the third powder selection pipe 31. Fine particles are discharged from the bottom of the cyclone dust collector group 4. Figure 5 In the figure, position A is the outlet for fine particles, and position B is the outlet for coarse particles. Figure 5 In the embodiment, the first powder selection pipeline 41 is not connected to the second powder selection pipeline 42 , and the second powder selection pipeline 42 is not connected to the third powder selection pipeline 31 .

[0028] The implementation principle of a powder selection system in the utility model is as follows: when screening materials, the materials pass through the divider 2, are divided into uniform curtain-like materials and enter the feed pipe 14 of the powder selection machine, and push open the first air lock valve 141 under the action of gravity to enter the powder selection machine body 1; the materials entering the powder selection machine body 1 slide down along the partition surface 11 under the action of gravity, slide onto the opposite partition surface 11 after being in the air, turn around and fall again after changing direction, and the materials collide with each other many times during this process.

[0029] When the material is in the air, it forms an angle of 30-70 degrees with the circulating air rising in the powder concentrator discharged by the induced draft fan 3 (this angle can vary according to different materials). At this angle, the material is scrubbed, and fine particles and fine particles on the surface of coarse particles are peeled off and rise.

[0030] The circulating air and fine particles enter the cyclone dust collector group 4 through the first powder selection pipe 41, and 80% of the fine particles are removed in the cyclone dust collector group 4. Finally, these 80% of fine particles are discharged from the discharge port at the bottom of the cyclone dust collector group 4. Part of the remaining 20% ​​of fine particles will enter the bag filter 5, and another part will enter the powder selection machine again to participate in the circulation.

[0031] The circulating air from the cyclone dust collector group 4 enters the induced draft fan 3 through the second powder selection pipe 42 and then enters the air distribution valve 32, where 50-90% of the air enters the powder selection machine body 1 again through the back-blowing air intake pipe 33 to form an upward airflow. In order to avoid the positive pressure dust overflow of the equipment caused by the back-blowing of 100% of the fan air volume entering the powder selection machine, 10-25% of the air volume at the fan outlet air distribution valve 32 enters the small bag dust collector 5 and then is discharged. The size of the air distribution valve 32 is adjustable, and the frequency converter of the induced draft fan 3 controls the speed to adjust the air pressure and air volume to avoid dust overflow.

[0032] In the utility model, the fracturing sand undergoes multiple tortuous falls and collisions in the powder classifier, which prolongs the retention time of the material in the powder classifier, and the turbidity of the fracturing sand meets the requirements after multiple scrubbings. There are metals such as copper, iron, and aluminum in the metal crushing and separation materials, as well as a large amount of light materials such as wood chips, plastics, and wire skins, which need to be scrubbed and separated repeatedly. In the utility model, the materials collide repeatedly (between the materials, between the materials and the partition surface 11), and the falling speed of the materials is accelerated during the collision. Each turning and falling is repeatedly scrubbed by the air surface and the rising airflow to ensure the cleanliness of the surface of the coarse particles and separate the light materials.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A curve powder separator, characterized in that: The invention comprises a powder classifier body (1) in the shape of a zigzag pipeline and a feed pipe (14) fixed on the side wall of the powder classifier body (1), a distributor (2) is installed on the top of the feed pipe (14), a plurality of partition surfaces (11) are arranged in a sequence of continuous turnings in the height direction inside the powder classifier body (1), a first air lock valve (141) is installed in the feed pipe (14) to prevent the air inside the powder classifier body (1) from being discharged from the feed pipe (14), an air outlet pipe (13) is fixed on the top of the powder classifier body (1), an air inlet pipe (12) arranged in a horizontal direction is fixed on the bottom of the powder classifier body (1), a discharge pipe (6) is fixed on the bottom of the air inlet pipe (12), the discharge pipe (6) is communicated with the bottom of the powder classifier body (1), the coarse particle material in the powder classifier body (1) is discharged from the discharge pipe (6), and a second air lock valve (61) is installed in the discharge pipe (6).

2. The curve powder separator according to claim 1, characterized in that: A plurality of guide plates (21) are installed on the inner wall of the distributor (2), and the distance between two adjacent guide plates (21) can be adjusted.

3. A powder selection system, characterized in that: The invention comprises the curved powder classifier as claimed in claim 2, wherein a cyclone dust collector group (4) is arranged on one side of the powder classifier body (1), a blower fan (3) is arranged between the cyclone dust collector group (4) and the powder classifier body (1), a first powder classifying pipe (41) is fixed between the cyclone dust collector group (4) and the air outlet pipe (13), a second powder classifying pipe (42) is fixed between the top of the cyclone dust collector group (4) and the air inlet of the blower fan (3), a back-blowing air inlet pipe (33) is arranged at the air outlet of the blower fan (3), and the back-blowing air inlet pipe (33) is connected to the air inlet pipe (12).

4. The powder selection system according to claim 3, characterized in that: The air outlet of the induced draft fan (3) is also connected to a third powder selection pipe (31); one end of the third powder selection pipe (31) away from the induced draft fan (3) is connected to a bag dust collector (5); an air distribution valve (32) is installed at the air outlet of the induced draft fan (3); part of the air blown out by the induced draft fan (3) enters the powder selection machine body (1) through the back-blowing air inlet pipe (33), and the other part enters the bag dust collector (5) through the third powder selection pipe (31).

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