CN220836585U - Fine powder particle screening device - Google Patents
Fine powder particle screening device Download PDFInfo
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- CN220836585U CN220836585U CN202322616498.1U CN202322616498U CN220836585U CN 220836585 U CN220836585 U CN 220836585U CN 202322616498 U CN202322616498 U CN 202322616498U CN 220836585 U CN220836585 U CN 220836585U
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- fine powder
- interlayer
- screen
- powder particle
- core tube
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- 239000000843 powder Substances 0.000 title claims abstract description 44
- 239000002245 particle Substances 0.000 title claims abstract description 43
- 238000012216 screening Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000011229 interlayer Substances 0.000 claims abstract description 21
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000010410 layer Substances 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 235000019580 granularity Nutrition 0.000 description 6
- 238000005457 optimization Methods 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model discloses a fine powder particle screening device, which comprises a screening box; the upper part of the screen box is provided with a feed inlet, and a plurality of layers of inclined screen plates with meshes are fixedly arranged in the screen box; the sieve plate is provided with an interlayer, a plurality of first partition plates which are distributed at intervals are arranged in the interlayer and are used for dividing the interlayer into a plurality of chambers, and a plurality of movable steel balls are arranged in each chamber; the lower end of each sieve plate is communicated with a discharge hole fixedly arranged on the side wall of the sieve box, and the tail end of each discharge hole is connected with a pipeline of the pneumatic conveying mechanism and used for conveying the screened fine powder particles through flowing air flow. The utility model utilizes the impact of the steel balls, reduces the possibility of blocking the screen, improves the screening efficiency, and simultaneously utilizes pneumatic conveying to collect the screened fine powder particles so as to avoid forming dust.
Description
Technical Field
The utility model belongs to the technical field of petroleum propping agent production, and particularly relates to a fine powder particle screening device.
Background
The particle size of the ceramsite used as the petroleum propping agent is 0.4-0.8mm. During the production of the petroleum propping agent, the powder after ball milling needs to be screened. When the ceramic granule is manufactured, the fine powder particles with different granularities are mixed according to the technological requirements. Thus, the fine powder particles used for the pelletizing of petroleum proppants are extremely fine. If the conventional vibrating screen is used for screening the superfine powder, the problem is that firstly, the mesh size of the screen is very small, and the screen is easily blocked by fine powder particles, so that the screening efficiency is affected; second, the fine powder particles are very small and get kinetic energy in vibration, which is easy to float in air to form dust, not easy to collect and easy to pollute the environment.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model provides a fine powder particle screening device, which aims to reduce the possibility of blocking a screen by fine powder particles, ensure that the screen can continuously work so as to improve the efficiency, and simultaneously collect the screened fine powder particles by pneumatic conveying so as to avoid dust formation.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a fine powder particle screening device comprises a vibratable screen box; the upper part of the screen box is provided with a feed inlet, and a plurality of layers of inclined screen plates with meshes are fixedly arranged in the screen box; each layer of meshes from top to bottom is sequentially reduced; the high end to the low end of the sieve plate is in a first direction; the sieve plate is provided with an interlayer, a plurality of first partition plates which are distributed at intervals and perpendicular to the first direction are arranged in the interlayer and are used for dividing the interlayer into a plurality of chambers, and a plurality of movable steel balls are arranged in each chamber; the lower end of each sieve plate is communicated with a discharge hole fixedly arranged on the side wall of the sieve box, and the tail end of each discharge hole is connected with a pipeline of the pneumatic conveying mechanism and used for conveying the screened fine powder particles through flowing air flow.
As a further optimization, the pneumatic conveying mechanism comprises an outer sleeve; two ends of the outer sleeve are respectively connected with a rubber hose; one of the rubber hoses is communicated with the fan through a connecting pipe; the tail end of the discharge hole is fixedly connected to the side wall of the outer sleeve; an inner sleeve and a core tube are fixedly arranged in the outer sleeve; one end of the core tube is inserted into one end of the inner sleeve, and the other ends of the inner sleeve and the core tube are respectively and tightly connected with the inner wall of the outer sleeve; at the joint of the inner sleeve and the core tube, the tail end of the core tube is provided with a contracted conical part for forming an annular gap between the outer wall of the core tube and the inner wall of the inner sleeve; the fan is positioned at one side of the large end of the conical opening part, and the tail end of the discharge opening is opposite to the joint part and is used for forming negative pressure in the outer sleeve to suck fine powder particles discharged from the discharge opening when the conical opening part blows out high-speed air flow into the inner sleeve.
As a further optimization, a plurality of second partition boards which are distributed at intervals and parallel to the first direction are further arranged in the interlayer, the interlayer is divided into a plurality of independent chambers by the second partition boards and the first partition boards which are used for being criss-cross, and 2 to 3 steel balls are arranged in each chamber.
As a further optimization, the steel balls are hollow balls.
As further optimization, the bottom of the screen box is provided with four elastic supporting legs which are uniformly distributed, and the lower ends of the elastic supporting legs are connected to the upper surface of the base; and the bottom wall of the screen box is fixedly connected with an excitation device which is used for driving the screen box to vibrate.
As a further optimization, the elastic supporting leg is a rubber block.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The device has the advantages that one screen box can screen out fine powder particles with a plurality of granularities, and the working efficiency is high.
(2) The device impacts the screen plate through the jumping steel balls, reduces the probability of blocking meshes, and enables the screen plate to work for a long time.
(3) The device sucks the fine powder particles after being screened through positive pressure, so that dust is prevented from being generated, the environment is polluted, the fan is protected from being influenced by the fine powder particles, and the service life of the fan is prolonged.
(4) The repeatedly-beating steel balls also play a secondary grinding role, so that more fine powder particles with smaller granularity can be obtained.
In a word, this device utilizes the steel ball impact, has reduced the possibility of jam screen cloth, has improved the efficiency of screening, simultaneously, utilizes pneumatic conveying to collect the fine powder granule of screening, avoids forming the dust.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;
FIG. 2 is a schematic view of the junction between the outer sleeve and the discharge port in embodiment 1 of the present utility model;
Fig. 3 is a schematic view of a structure of clamping a screen plate according to embodiment 1 of the present utility model.
The corresponding relation between the technical characteristics and the reference numerals in the drawings is as follows: a screen box 1; a feed inlet 11; a discharge port 12; an elastic leg 13; an excitation device 14; a screen plate 2; a mesh 21; a first separator 22; a second separator 23; a steel ball 3; an outer sleeve 4; a rubber hose 41; a connection pipe 42; a blower 43; an inner sleeve 44; a core tube 45; tapered portion 46.
Detailed Description
The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments thus described are only some, but not all, of the preferred embodiments of the present utility model. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
Example 1: please refer to fig. 1-3;
The utility model provides the following technical scheme: a fine powder particle screening device is applied to screening raw material fine powder for manufacturing petroleum propping agents and comprises a vibratable screen box 1; the upper part of the screen box 1 is provided with a feed inlet 11, and a plurality of layers of inclined screen plates 2 with meshes 21 are fixedly arranged in the feed inlet; each layer of the mesh 21 sequentially decreases from top to bottom; the direction from the high end to the low end of the sieve plate 2 is a first direction; the screen plate 2 is provided with an interlayer, a plurality of first partition plates 22 which are distributed at intervals and perpendicular to the first direction are arranged in the interlayer, the interlayer is divided into a plurality of chambers, and each chamber is provided with a plurality of movable steel balls 3; it can be seen that the screen plate 2 comprises two layers of plates, the interlayer is located between the two layers of plates, each layer of plates is provided with meshes 21, the steel balls 3 are located in the interlayer to randomly jump along with the vibration of screening, collide with the upper layer of plates and the lower layer of plates, impact the meshes 21 blocked, and avoid blocking. The first partition plate 22 prevents the plurality of steel balls 3 from gathering towards the lower end and dispersing into the interlayer, so that the steel balls 3 are uniformly distributed.
The lower end of each sieve plate 2 is communicated with a discharge hole 12 fixedly arranged on the side wall of the sieve box 1, and the tail end of each discharge hole 12 is connected with a pipeline of the pneumatic conveying mechanism and is used for conveying the screened fine powder particles through flowing air flow. Therefore, the fine powder particles are collected pneumatically, dust is avoided, and the environment is not polluted.
An exemplary pneumatic conveying mechanism comprises an outer sleeve 4; rubber hoses 41 are respectively connected to two ends of the outer sleeve 4; one of the rubber hoses 41 is communicated with a fan 43 through a connecting pipe 42; the tail end of the discharge hole 12 is fixedly connected to the side wall of the outer sleeve 4; an inner sleeve 44 and a core tube 45 are fixedly arranged in the outer sleeve 4; one end of the core tube 45 is inserted into one end of the inner sleeve 44, and the other ends of the inner sleeve 44 and the core tube 45 are respectively and hermetically connected with the inner wall of the outer sleeve 4; at the junction of the inner sleeve 44 and the core tube 45, the end of the core tube 45 is provided with a tapered portion 46 which is contracted to form an annular gap between the outer wall of the core tube 45 and the inner wall of the inner sleeve 44; the fan 43 is located at the large end side of the conical part 46, and the tail end of the discharge port 12 is opposite to the joint, so that when the conical part 46 blows out high-speed airflow into the inner sleeve 44, negative pressure is formed in the outer sleeve 4 to suck the fine powder particles discharged from the discharge port 12.
The principle of pneumatic suction of fine powder particles is that when the cone portion 46 blows out a high-speed air flow into the inner sleeve 44, the pressure of the high-speed air flow is low, and the outer sleeve 4 can compensate for the negative pressure only at the discharge port 12, thereby generating suction force. Therefore, the device is positive pressure suction, the fan 43 is positioned on the large end side of the cone part 46 for blowing, and fine powder particles are prevented from entering the fan 43, so that the service life of the fan 43 is prolonged.
In order to make the distribution of the steel balls 3 more uniform, a plurality of second partition plates 23 which are distributed at intervals and parallel to the first direction are further arranged in the interlayer, and the interlayer is divided into a plurality of independent chambers by the second partition plates 23 and the first partition plates 22 which are used for criss-cross, and 2 to 3 steel balls 3 are arranged in each chamber. More preferably, the steel balls 3 are hollow balls, so that the elasticity is better and the impact force is stronger.
In order to enable the screening to vibrate, four elastic supporting legs 13 which are uniformly distributed are arranged at the bottom of the screening box 1, and the lower ends of the elastic supporting legs 13 are connected to the upper surface of the base; the bottom wall of the screen box 1 is fixedly connected with an excitation device 14 which is used for driving the screen box 1 to vibrate. Preferably, the elastic leg 13 is a rubber block.
When the vibration excitation device is used, firstly, the vibration excitation device 14 is started to drive screening to vibrate, and at the moment, the vibration excitation device vibrates together with the outer sleeve 4 fixedly connected with the discharge hole 12 of the screen box 1, and the vibration excitation device is connected with other fixed pipelines through the rubber hose 41 to avoid vibration energy from being transmitted to the other pipelines. Then, fine powder particles are input into the feed inlet 11, the vibrating screen box 1 drives the screen plate 2 to vibrate and screen the fine powder particles, and because each layer of the mesh holes 21 from top to bottom is sequentially reduced, the granularity of the particles at the lowest end is minimum, and at the moment, the screen plate 2 is knocked by the jumping steel balls 3, so that the probability of blocking the mesh holes 21 is reduced; the sieved particles then enter the discharge port 12 along the inclined sieve plate 2, and the particles are sucked away and conveyed by the suction force generated by the outer sleeve 4.
The embodiment has the advantages that compared with the prior art:
(1) The device has the advantages that one screen box 1 can screen out fine powder particles with a plurality of granularities, and the working efficiency is high.
(2) The device impacts the sieve plate 2 through the jumping steel balls 3, reduces the probability of blocking the meshes 21, and enables the sieve plate 2 to work for a long time.
(3) The device not only avoids dust generation and environmental pollution, but also protects the fan 43 from the influence of the fine powder particles, and prolongs the service life of the fan 43.
(4) The repeatedly-beating steel balls also play a secondary grinding role, so that more fine powder particles with smaller granularity can be obtained.
In a word, this device utilizes steel ball 3 to reduce the possibility of jam screen cloth, has improved the efficiency of screening, simultaneously, utilizes pneumatic conveying to collect the fine powder granule of screening, avoids forming the dust.
The utility model has not been described in detail in the prior art; it should be understood by those skilled in the art that any combination of the features of the foregoing embodiments may be adopted, and that all possible combinations of the features of the foregoing embodiments are not described for brevity of description, however, such combinations are not to be considered as a contradiction between the features. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A fine powder particle screening device, comprising a vibratable screen box (1); the upper end of the screen box (1) is provided with a feed inlet (11), and a plurality of layers of inclined screen plates (2) with meshes (21) are fixedly arranged in the screen box; each layer of the mesh (21) from top to bottom is sequentially reduced; the direction from the high end to the low end of the sieve plate (2) is a first direction; the method is characterized in that: the screen plate (2) is provided with an interlayer, a plurality of first partition plates (22) which are distributed at intervals and perpendicular to the first direction are arranged in the interlayer, the interlayer is divided into a plurality of chambers, and each chamber is internally provided with a plurality of movable steel balls (3);
The lower end of each sieve plate (2) is communicated with a discharge hole (12) fixedly arranged on the side wall of the sieve box (1), and the tail end of each discharge hole (12) is connected with a pipeline of a pneumatic conveying mechanism and is used for conveying screened fine powder particles through flowing air flow.
2. The fine powder particle screening apparatus of claim 1, wherein: the pneumatic conveying mechanism comprises an outer sleeve (4); rubber hoses (41) are respectively connected to two ends of the outer sleeve (4); one of the rubber hoses (41) is communicated with a fan (43) through a connecting pipe (42); the tail end of the discharge hole (12) is fixedly connected to the side wall of the outer sleeve (4); an inner sleeve (44) and a core tube (45) are fixedly arranged in the outer sleeve (4); one end of the core tube (45) is inserted into one end of the inner sleeve (44), and the other ends of the inner sleeve (44) and the core tube (45) are respectively and tightly connected with the inner wall of the outer sleeve (4);
-at the junction of the inner sleeve (44) and the core tube (45), the end of the core tube (45) is provided with a converging conical portion (46) for forming an annular gap between the outer wall of the core tube (45) and the inner wall of the inner sleeve (44);
The fan (43) is positioned at the large end side of the conical opening part (46), and the tail end of the discharge opening (12) is opposite to the joint, so that when the conical opening part (46) blows out high-speed airflow into the inner sleeve (44), negative pressure is formed in the outer sleeve (4) to suck fine powder particles discharged from the discharge opening (12).
3. The fine powder particle screening apparatus of claim 2, wherein: the interlayer is also provided with a plurality of second partition boards (23) which are distributed at intervals and parallel to the first direction, the second partition boards (23) and the first partition boards (22) which are used for being criss-cross are used for dividing the interlayer into a plurality of independent chambers, and each chamber is internally provided with 2 to 3 steel balls (3).
4. A fine powder particle screening apparatus as claimed in claim 3, wherein: the steel balls (3) are hollow balls.
5. The fine powder particle screening apparatus of claim 1, wherein: four elastic supporting legs (13) which are uniformly distributed are arranged at the bottom of the screen box (1), and the lower ends of the elastic supporting legs (13) are connected to the upper surface of the base; the bottom wall of the screen box (1) is fixedly connected with an excitation device (14) which is used for driving the screen box (1) to vibrate.
6. The fine powder particle screening apparatus of claim 5, wherein: the elastic supporting leg (13) is a rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322616498.1U CN220836585U (en) | 2023-09-25 | 2023-09-25 | Fine powder particle screening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322616498.1U CN220836585U (en) | 2023-09-25 | 2023-09-25 | Fine powder particle screening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220836585U true CN220836585U (en) | 2024-04-26 |
Family
ID=90780613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322616498.1U Active CN220836585U (en) | 2023-09-25 | 2023-09-25 | Fine powder particle screening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220836585U (en) |
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2023
- 2023-09-25 CN CN202322616498.1U patent/CN220836585U/en active Active
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