Crushing and screening device for potassium sulfate manufacturing

Abstract

A crushing and screening device for potassium sulfate manufacturing relates to the technical field of screening devices and comprises a vertically-arranged conveying barrel, a spiral slow flow blade is coaxially and rotatably arranged in the conveying barrel, and three screening hole areas with the mesh number decreasing progressively are arranged on the barrel wall of the conveying barrel from top to bottom. The outer wall of the conveying barrel is fixedly connected with separation housings wrapping the three screening hole areas, and each separation housing is connected with a negative pressure connecting pipe. The potassium sulfate screening device solves the problems that in the prior art, only particles of the same specification can be screened when screening is conducted in the potassium sulfate production process, when screening needs to be conducted on different particle sizes, potassium sulfate materials need to be guided into corresponding screening devices in sequence, labor intensity is improved, and screening efficiency cannot be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to screening device technical field, concretely relates to the crushing screening device for potassium sulfate manufacturing. BACKGROUND

[0002] Potassium sulfate is a chlorine-free, high-quality and efficient potassium fertilizer, especially in tobacco, grape, sugar beet, tea tree, potato, flax and various fruit trees, etc. The planting of chlorine-sensitive crops is an important fertilizer that cannot be lacked. Before sulfuric acid and bagging, potassium sulfate particles need to be screened to prevent potassium sulfate particles from caking. Currently, potassium sulfate particle screening mainly screens potassium sulfate through multiple screens, crushes larger particles, and the process of removing larger particles wastes time and the screen is easily blocked, which has great limitations.

[0003] The prior art discloses a patent with publication number CN220072371U, which includes a screening structure, a pretreatment structure is arranged on the top surface of the screening structure, a fixing structure is arranged on the outer surface of the pretreatment structure, the pretreatment structure includes a power unit and a stirring unit, the stirring unit includes a worm, the outer surface of the worm is connected with a turbine, the bottom surface of the turbine is connected with a stirring shaft, and the outer surface of the stirring shaft is provided with a stirring rod. The potassium sulfate fertilizer particle screening device, by the arrangement of the pretreatment structure, the worm and the turbine are driven to rotate by the stirring motor, and then the stirring rod is driven to rotate by the stirring shaft, so that the raw materials can be pretreated, the large particles in the raw materials can be crushed in the stirring barrel, and damage to the screen plate caused by crushing the particles on the screen plate can be avoided.

[0004] The existing device gradually exposes the deficiencies of the technology with use, mainly in the following aspects:

[0005] First, the existing potassium sulfate production process can only screen particles of the same size when screening. When different particle sizes need to be screened, the potassium sulfate material needs to be sequentially introduced into the corresponding screening device, which not only increases the labor intensity, but also cannot guarantee the screening efficiency.

[0006] Second, the existing potassium sulfate screening structure is easily clogged on the filter screen during use, which affects the screening efficiency of different particle size materials.

[0007] From the above, it is obvious that the prior art has inconvenience and defects in actual use, so it is necessary to improve. UTILITY MODEL CONTENT

[0008] In view of the defects in the prior art, the utility model provides a crushing and screening device for potassium sulfate manufacturing to solve the problem that in the traditional potassium sulfate production process, only the same size particles can be screened, and when different particle sizes need to be screened, the potassium sulfate material needs to be sequentially introduced into the corresponding screening device, which not only increases the labor intensity, but also cannot guarantee the screening efficiency.

[0009] To achieve the above object, the utility model provides the following technical scheme.

[0010] The crushing and screening device for potassium sulfate manufacturing, including the vertical setting conveying cylinder, the conveying cylinder is coaxial rotation and is equipped with the slow flow vane which is arranged in spiral, the cylinder wall of conveying cylinder is equipped with three screen hole areas which mesh number is arranged in decreasing order from top to bottom, the outer wall of conveying cylinder is respectively fixed with the separation shell which covers three screen hole areas,

[0011] Each separation shell is connected with negative pressure connecting pipe.

[0012] As an optimized scheme, the edge of the slow flow vane is in frictional contact with the inner wall of the conveying cylinder.

[0013] As an optimized scheme, the separation shell is externally fixed with an annular flow equalization shell, and a plurality of negative pressure suction holes are arranged on the outer wall of the separation shell and are in communication with the annular flow equalization shell.

[0014] As an optimized scheme, the negative pressure connecting pipe is fixed to the outer wall of the annular flow equalization shell.

[0015] As an optimized scheme, each negative pressure connecting pipe is connected with a dust collector through a negative pressure pipeline.

[0016] As an optimized scheme, a flow regulating valve is connected to each negative pressure pipeline.

[0017] As an optimized scheme, a plurality of dust collectors are commonly connected to a total negative pressure pipeline.

[0018] As an optimized scheme, a top plate is fixed to the upper end of the conveying cylinder, and a feed hopper is fixed to the outer wall of the conveying cylinder near the upper end.

[0019] As an optimized scheme, a bottom plate is fixed to the lower end of the conveying cylinder, and a discharge cylinder is fixed to the bottom plate and is in communication with the inner cavity of the bottom plate.

[0020] As an optimized scheme, a rotating shaft is arranged between the top plate and the bottom plate, the slow flow vane is fixed to the rotating shaft, and a driving machine is fixed to the upper surface of the top plate and drives the rotating shaft to rotate.

[0021] Compared with the prior art, the utility model has the beneficial effects that

[0022] Potassium sulfate material is guided into through the feeding hopper, and the potassium sulfate material falls along the slow flow vane, and when passing through the three screen hole areas provided from top to bottom and having a gradually decreasing number of meshes, small, medium and large materials will correspondingly pass through the screen hole areas and enter the separation cover shell for collection, so that screening of materials of various particle sizes is simultaneously realized, and the screening efficiency is improved.

[0023] The separation cover shell is externally fixed with the annular flow uniformizing shell, the separation cover shell is surrounded by a plurality of negative pressure suction holes in communication with the annular flow uniformizing shell, the materials in the separation cover shell are sucked away by using negative pressure, and the materials are collected by the dust collector, and the screening efficiency of the materials in the falling process is greatly improved by using negative pressure.

[0024] The slow rotation of the slow flow vane driven by the driving machine can realize upward or downward conveying of the materials, reduce the falling speed of the materials, and improve the screening precision of the materials.

[0025] The flow regulating valve is connected to the negative pressure pipeline corresponding to each screen hole area, so that the negative pressure flow of the corresponding screen hole area can be adjusted, different scenes can be met, and the use range is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0027] Figure 1 It is a structural schematic view of the utility model.

[0028] In the drawings: 1-conveying cylinder body; 2-slow flow vane; 3-screen hole area; 4-separation cover shell; 5-annular flow uniformizing shell; 6-negative pressure suction hole; 7-negative pressure connecting pipe; 8-negative pressure pipeline; 9-dust collector; 10-total negative pressure pipeline; 11-flow regulating valve; 12-rotating shaft; 13-top plate; 14-driving machine; 15-feeding hopper; 16-discharging cylinder. DETAILED DESCRIPTION

[0029] The embodiments of the technical solutions of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the utility model, and therefore only serve as examples, and cannot limit the protection scope of the utility model.

[0030] As Figure 1The illustrated crushing and screening device for potassium sulfate production comprises a vertically arranged conveying cylinder 1, a coaxially rotating flow slowing vane 2 arranged in a spiral shape is arranged in the conveying cylinder 1, three screen hole areas 3 with a mesh number arranged in a decreasing manner from top to bottom are arranged on the cylinder wall of the conveying cylinder 1, a separate cover shell 4 covering the three screen hole areas 3 is fixedly connected to the outer wall of the conveying cylinder 1,

[0031] Each separate cover shell 4 is connected with a negative pressure connecting pipe 7.

[0032] The edge of the flow slowing vane 2 is in frictional contact with the inner wall of the conveying cylinder 1.

[0033] The outer part of the separate cover shell 4 is fixedly connected with an annular flow equalizing shell 5, and a plurality of negative pressure suction holes 6 in communication with the annular flow equalizing shell 5 are arranged around the outer wall of the separate cover shell 4.

[0034] The negative pressure connecting pipe 7 is fixedly connected to the outer wall of the annular flow equalizing shell 5.

[0035] Each negative pressure connecting pipe 7 is connected with a dust collector 9 through a negative pressure pipe 8.

[0036] A flow regulating valve 11 is connected to each negative pressure pipe 8.

[0037] A plurality of dust collectors 9 are connected to a total negative pressure pipe 10.

[0038] A top plate 13 is fixedly connected to the upper end of the conveying cylinder, and a feed hopper 15 is fixedly connected to the outer wall of the conveying cylinder near the upper end.

[0039] A bottom plate is fixedly connected to the lower end of the conveying cylinder, and a discharge cylinder 16 communicating with the inner cavity of the bottom plate is fixedly connected to the bottom plate.

[0040] A rotating shaft 12 is rotatably arranged between the top plate 13 and the bottom plate, the flow slowing vane 2 is fixedly connected to the rotating shaft 12, and a driving machine 14 for driving the rotating shaft 12 to rotate is fixedly connected to the upper surface of the top plate 13.

[0041] The working principle of the device is as follows:

[0042] The potassium sulfate material is introduced through the feed hopper 15, the potassium sulfate material falls along the flow slowing vane 2, and when passing through the three screen hole areas 3 arranged in a decreasing manner from top to bottom, small, medium and large materials will correspondingly pass through the screen hole areas 3 and enter the separate cover shell 4 for collection, thereby realizing the simultaneous screening of materials of different particle sizes and improving the screening efficiency;

[0043] The annular flow equalizing shell 5 is fixedly connected to the outside of the separate cover shell 4, a plurality of negative pressure suction holes 6 in communication with the annular flow equalizing shell 5 are arranged around the separate cover shell 4, the material in the separate cover shell 4 is sucked away by negative pressure, and the material is collected by the dust collector 9, and the screening efficiency of the material during the falling process can be greatly improved by using negative pressure.

[0044] By driving the slow rotation of the slow-flowing blade 2 by the driving machine 14, the upward or downward conveying of the material can be realized, the falling speed of the material is reduced, and the screening precision of the material is improved;

[0045] The flow regulating valve 11 is connected on the negative pressure pipeline 8 corresponding to each screen hole area 3, the negative pressure flow on the corresponding screen hole area 3 can be adjusted, different scenes can be met, and the use range is expanded.

[0046] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

Claims

1. A crushing and screening device for potassium sulfate production, characterized by: The utility model relates to a vertical setting conveying cylinder (1), the conveying cylinder (1) is provided with the spiral setting slow flow vane (2) in the coaxial rotation, the cylinder wall of conveying cylinder (1) is provided with three screen hole areas (3) from top to bottom, the outer wall of conveying cylinder (1) is fixedly connected with the separation cover (4) covering three screen hole areas (3) respectively, Each separation cover (4) is connected with negative pressure connecting pipe (7) respectively.

2. The crushing and screening device for potassium sulfate production according to claim 1, characterized in that: The edge of slow flow vane (2) is in frictional contact with the inner wall of conveying cylinder (1).

3. The crushing and screening device for potassium sulfate production according to claim 2, characterized in that: The outer portion of separation cover (4) is fixedly connected with annular flow uniformity shell (5), and the outer wall of separation cover (4) is surrounded with a plurality of negative pressure suction holes (6) in communication with annular flow uniformity shell (5).

4. The crushing and screening device for potassium sulfate production according to claim 3, characterized in that: Negative pressure connecting pipe (7) is fixedly connected on the outer wall of annular flow uniformity shell (5).

5. The crushing and screening device for potassium sulfate production according to claim 4, characterized in that: Each negative pressure connecting pipe (7) is connected with dust collector (9) through negative pressure pipeline (8) respectively.

6. The crushing and screening device for potassium sulfate production according to claim 5, characterized in that: Flow regulating valve (11) is connected on each negative pressure pipeline (8).

7. The crushing and screening device for potassium sulfate production according to claim 6, characterized in that: A plurality of dust collectors (9) are commonly connected on total negative pressure pipeline (10).

8. The crushing and screening device for potassium sulfate production according to claim 7, characterized in that: The upper end of conveying cylinder is fixedly connected with top plate (13), and the outer wall close to the upper end of conveying cylinder is fixedly connected with feeding hopper (15).

9. The crushing and screening device for potassium sulfate production according to claim 8, characterized in that: The lower end of conveying cylinder is fixedly connected with bottom plate, and the bottom plate is fixedly connected with discharging cylinder (16) communicating with the inner cavity thereof.

10. The crushing and screening device for potassium sulfate production according to claim 9, characterized in that: The rotation shaft (12) is rotationally arranged between the top plate (13) and the bottom plate, the slow flow vane (2) is fixedly connected on the rotation shaft (12), and the upper surface of the top plate (13) is fixedly connected with driving machine (14) for driving the rotation of the rotation shaft (12).

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