Caked inorganic salt raw material crushing device

Abstract

The utility model relates to a caked inorganic salt raw material smashing device which comprises a rack, an inorganic salt raw material feeding port is formed in the top of the rack, and an inorganic salt raw material discharging port is formed in the bottom of the rack. The machine further comprises a screening mechanism and a partition plate, the partition plate is located below the screening mechanism, the internal space of the machine frame is divided into a fine material containing space and a coarse material containing space through the partition plate, and a smashing roller set I, a smashing roller set II and a smashing roller set III are arranged in the fine material containing space and the coarse material containing space; a screw discharging machine is further arranged at the bottom of the machine frame. An inorganic salt raw material is pre-screened through the material screening mechanism, fine materials and coarse materials are separated, the fine materials directly enter the fine material containing space, the coarse materials enter the coarse material containing space to be subjected to targeted crushing, the raw materials with different granularities can be crushed stage by stage through the multiple stages of crushing roller sets, uniform crushing is ensured, the crushing efficiency is improved, repeated processing is avoided, and the production efficiency is improved. Compared with the previous one-time crushing, the arrangement of the crushing roller group is more flexible and practical.

Description

Technical Field

[0001] This utility model relates to the field of inorganic salt raw material processing technology, specifically to a device for crushing agglomerated inorganic salt raw materials. Background Technology

[0002] In industries such as chemical, metallurgical, and food processing, inorganic salt raw materials such as sodium chloride, sodium sulfate, and calcium carbonate often clump due to improper storage or transportation. Direct use of clumped raw materials can affect the uniformity of subsequent processing and product quality; therefore, they need to be crushed. Traditional inorganic salt crushing equipment typically uses a single crushing roller or hammer crusher, which presents the following problems:

[0003] (1) Low screening efficiency: The raw materials were not pre-screened, resulting in fine powder and coarse lumps being mixed and crushed, increasing energy consumption and equipment wear;

[0004] (2) One-time crushing is difficult to completely process agglomerated raw materials, and some coarse particles need to be reworked multiple times, which affects production efficiency;

[0005] (3) The dust generated during the crushing process is easy to escape, which not only pollutes the environment, but may also endanger the health of operators;

[0006] To address the aforementioned issues, we have made technical improvements to the existing equipment to meet the needs of inorganic salt production, specifically for pulverizing agglomerated inorganic salt raw materials. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an automatic screening, grading, crushing and dust collection device for agglomerated inorganic salt raw materials, which addresses the shortcomings of the existing technology.

[0008] The technical problem to be solved by this utility model is achieved through the following technical solution: a device for crushing agglomerated inorganic salt raw materials, including a frame, an inorganic salt raw material inlet at the top of the frame, and an inorganic salt raw material outlet at the bottom of the frame.

[0009] A screening mechanism for screening inorganic salt raw materials is installed on the inner wall of the frame. The screening mechanism is located below the feed inlet of inorganic salt raw materials.

[0010] A partition plate is also fixed on the inner wall of the frame. The partition plate is located below the screening mechanism. The partition plate divides the internal space of the frame into a fine material receiving space and a coarse material receiving space. A crushing roller group I is rotatably installed on the inner wall of the frame in the coarse material receiving space.

[0011] At the bottom of the partition plate, there are also crushing roller group II and crushing roller group III. Crushing roller group II is located on the inner wall of the bottom frame of the fine material receiving space, and crushing roller group III is located on the inner wall of the bottom frame of the coarse material receiving space.

[0012] A screw feeder is also installed at the bottom of the frame, with the feed inlet of the screw feeder located directly below the inorganic salt raw material discharge outlet;

[0013] It also includes a vacuuming mechanism, which includes vacuum pipe I and vacuum pipe II located at the top and bottom of the frame.

[0014] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned agglomerated inorganic salt raw material crushing device, wherein the mesh size of the screen of the screening mechanism is arranged from small to large according to the screening direction of the inorganic salt raw material.

[0015] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned agglomerated inorganic salt raw material crushing device, wherein the fine material holding space and the coarse material holding space are arranged one in front of the other in the frame according to the screening direction of the inorganic salt raw material.

[0016] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned agglomerated inorganic salt raw material crushing device, wherein the crushing roller group I, crushing roller group II and crushing roller group III are all composed of several roller bodies, and crushing teeth for crushing inorganic salt raw materials are fixed on the outer circumferential surface of the roller body. The two ends of the roller body are rotatably mounted on the inner wall of the frame through a rotary bearing, and one end extends out of the frame and is set as a power output end.

[0017] A rotating power mechanism fixedly mounted on the outer wall of the frame can be connected to the end of the roller body to provide rotational force to the roller body.

[0018] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned agglomerated inorganic salt raw material crushing device, wherein the dust suction pipe I and dust suction pipe II both include an air inlet end and an air outlet end. The air inlet end of dust suction pipe I is located on the top inner wall of the frame and above the screening mechanism. The air inlet end of dust suction pipe II is located on the inner wall of the frame between the partition plate and the screw discharge machine. The air outlet ends of dust suction pipe I and dust suction pipe II extend to the outside of the frame and are connected at the ends. A pump installed on the outer wall of the frame is connected to the air outlet ends of dust suction pipe I and dust suction pipe II, thereby removing dust from the inside of the frame.

[0019] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0020] (1) The inorganic salt raw material is pre-screened by the screening mechanism to separate the fine material and the coarse material. The fine material directly enters the fine material holding space, and the coarse material enters the coarse material holding space for targeted crushing. The multi-stage crushing roller group can crush raw materials of different particle sizes step by step to ensure uniform crushing, improve crushing efficiency, and avoid repeated processing. Compared with the previous one-time crushing, the setting of the crushing roller group is more flexible and practical.

[0021] (2) The dust suction pipe I and dust suction pipe II of the dust suction mechanism are respectively installed in the top and middle of the frame. On the one hand, they can suction the dust generated during the screening operation, and on the other hand, they can suction the dust generated during the discharge after crushing. They can effectively collect the dust generated during the crushing process, reduce environmental pollution, and improve the working environment. Compared with the previous open crushing equipment, the environmental protection performance of this agglomerated inorganic salt raw material crushing device is superior. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0023] Reference numerals in the attached drawings: 1. Frame; 2. Inorganic salt raw material outlet; 3. Screening mechanism; 4. Divider plate; 5. Fine material receiving space; 6. Coarse material receiving space; 7. Crushing roller group I; 8. Crushing roller group II; 9. Crushing roller group III; 10. Screw discharge machine; 11. Dust suction pipe I; 12. Dust suction pipe II; 13. Belt conveyor. Detailed Implementation

[0024] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0025] Example 1, referring to Figure 1 A device for crushing agglomerated inorganic salt raw materials includes a frame 1, which can be welded and fixed by metal plates. Its shape and size can be selected according to the usage requirements. The top of the frame 1 has an inorganic salt raw material inlet 1, and the bottom of the frame 1 has an inorganic salt raw material outlet 2.

[0026] A screening mechanism 3 for screening inorganic salt raw materials is provided on the inner wall of the frame 1. The screening mechanism 3 can be a vibrating screen in the prior art. The screening mechanism 3 is located below the inorganic salt raw material inlet 1. The mesh size of the screen of the screening mechanism 3 is arranged from small to large according to the screening direction of inorganic salt raw materials, that is, the mesh size gradually increases along the material flow direction.

[0027] A partition plate 4 is also fixed on the inner wall of the frame 1. The partition plate 4 is formed into a roughly square plate structure and is vertically fixed on the inner wall of the frame 1. The partition plate 4 is located below the screening mechanism 3. The partition plate 4 divides the internal space of the frame 1 into a fine material receiving space 5 and a coarse material receiving space 6. The fine material receiving space 5 and the coarse material receiving space 6 are arranged one after the other in the frame 1 according to the screening direction of the inorganic salt raw materials. The screen mesh diameter of the screening mechanism 3 above the fine material receiving space 5 is 2~5mm, while the screen mesh diameter of the screening mechanism 3 above the coarse material receiving space 6 is 8~15mm.

[0028] After the inorganic salt raw material enters the screen, the fine particles (≤5mm) pass through the fine material screen area first and fall directly into the fine material receiving space 5 below, while the larger lumps (>5mm) slide along the screen to the coarse material screen area and finally enter the coarse material receiving space 6 below for crushing.

[0029] A crushing roller group I7 is rotatably installed on the inner wall of the frame 1 within the coarse material receiving space 6. The number of rollers in the crushing roller group I7 can be selected according to the usage requirements, for example, four rollers. The tooth height of the crushing teeth on the rollers of the crushing roller group I7 is 10~20mm, and the rotation speed can be 50~100rpm.

[0030] At the bottom of the partition plate 4, there are also crushing roller group II 8 and crushing roller group III 9. Crushing roller group II 8 is located on the inner wall of the bottom frame 1 of the fine material receiving space 5. The number of rollers of crushing roller group II 8 can be selected according to the usage requirements, for example, two rollers. The tooth height of the crushing teeth on the roller body of crushing roller group II 8 is 5~10mm, and the rotation speed can be 100~150rpm. Crushing roller group III 9 is located on the inner wall of the bottom frame 1 of the coarse material receiving space 6. The number of rollers of crushing roller group III 9 can be selected according to the usage requirements, for example, three rollers. The tooth height of the crushing teeth on the roller body of crushing roller group III 9 is 3~8mm, and the rotation speed can be 120~180rpm.

[0031] The crushing roller group I7, crushing roller group II8 and crushing roller group III9 are all composed of several roller bodies. Crushing teeth for crushing inorganic salt raw materials are fixed on the outer circumferential surface of the roller body. The crushing teeth can be formed into a conical structure. The two ends of the roller body are rotatably mounted on the inner wall of the frame 1 through a rotary bearing. One end extends out of the frame 1 and is set as a power output end.

[0032] A rotary power mechanism (not shown in the figure) fixedly mounted on the outer wall of the frame 1 can be connected to the end of the roller body to provide rotational force to the roller body. The rotary power mechanism can be a rotary motor with a power of 2.2~5.5kW. It can be driven by the roller body in the crushing roller group I7, crushing roller group II8 and crushing roller group III9 through a chain or gear. The specific transmission direction can be selected according to the usage requirements.

[0033] At the bottom of the frame 1, there is also a screw discharge machine 10. The model of the screw discharge machine 10 can be selected according to the usage requirements. The feed port of the screw discharge machine 10 is located directly below the inorganic salt raw material discharge port 2. The screw diameter of the screw discharge machine 10 can be 200~300mm and the rotation speed is 20~40rpm.

[0034] It also includes a dust collection mechanism, which includes a dust collection pipe I11 and a dust collection pipe II12 installed at the top and bottom of the frame 1. Both the dust collection pipe I11 and the dust collection pipe II12 have an air inlet and an air outlet. The air inlet of the dust collection pipe I11 is located on the inner wall of the top of the frame 1 and above the screening mechanism 3. The air inlet of the dust collection pipe II12 is located on the inner wall of the frame 1 between the partition plate 4 and the screw discharge machine 10. The air outlets of the dust collection pipes I11 and II12 extend to the outside of the frame 1 and are connected at the ends. A pump (not shown in the figure) installed on the outer wall of the frame 1 is connected to the air outlets of the dust collection pipes I11 and II12 to remove dust from the inside of the frame 1. The dust collection air volume can be 500~1000m³ / h. A negative pressure can be formed by connecting an external centrifugal pump. The power of the centrifugal pump can be selected between 1.5~3kW.

[0035] In addition, to facilitate material feeding, a belt conveyor 13 is added to the side of the frame 1 near the inorganic salt raw material inlet 1. The front end of the belt conveyor 13 is located on the side of the bottom of the frame 1, and the end of the belt conveyor 13, i.e. the discharge end, extends into the inorganic salt raw material inlet 1 of the frame 1 and is located directly above the screening mechanism 3.

[0036] The operation process of the agglomerated inorganic salt raw material crushing device in Example 1 is as follows:

[0037] (1) Raw material conveying stage: The truck dumps the initially crushed inorganic salt raw material onto the belt conveyor 13, and the belt conveyor 13 transports the raw material piled on the ground to the inorganic salt raw material inlet 1. The conveying speed of the belt conveyor 13 can be controlled between 0.8-1.2m / s and can be adjusted according to the actual production demand.

[0038] (2) Grading and screening stage: After the raw materials enter the vibrating screen mechanism, fine particles (≤5mm) first fall directly into the fine material receiving space 5 through the fine mesh screen at the front end, while medium particles (5-8mm) and large lumps (>8mm) continue to slide to the end of the screen and finally enter the coarse material receiving space 6. The screen of the vibrating screen can vibrate at a frequency of 800-1200 times / minute to ensure screening efficiency.

[0039] (3) Crushing stage: In the coarse material receiving space 6, the crushing roller group I7 can operate at a speed of 50-100 rpm. The conical crushing teeth (tooth height 10-20 mm) on its surface can perform primary crushing on the agglomerated raw materials. The crushed material falls to the crushing roller group III9, which operates at a speed of 120-180 rpm to further crush the material and ensure that the output particle size is ≤5 mm. Meanwhile, the crushing roller group II8 in the fine material receiving space 5 operates at a speed of 100-150 rpm to supplement the crushing of any small amount of substandard particles. Each roller group is driven by a 2.2-5.5 kW motor and can be flexibly adjusted according to the characteristics of the raw materials and the processing volume through gear or chain transmission.

[0040] (4) Discharge and dust removal stage: The processed material is evenly discharged through the screw discharge machine 10. The screw diameter is 200-300mm and the speed is 20-40rpm to ensure continuous and stable discharge. The device is equipped with a two-stage dust removal system, namely dust suction pipe I11 and dust suction pipe II12. The top dust suction pipe mainly collects the dust generated during the screening process, and the bottom dust suction pipe is responsible for collecting the dust in the crushing zone. The total air volume is 500-1000m³ / h. A negative pressure is formed by a 1.5-3kW centrifugal pump, and the dust removal efficiency can reach more than 90%.

Claims

1. A device for pulverizing agglomerated inorganic salt raw materials, characterized in that: Includes a frame, with an inorganic salt raw material inlet at the top and an inorganic salt raw material outlet at the bottom; A screening mechanism for screening inorganic salt raw materials is installed on the inner wall of the frame. The screening mechanism is located below the feed inlet of inorganic salt raw materials. A partition plate is also fixed on the inner wall of the frame. The partition plate is located below the screening mechanism. The partition plate divides the internal space of the frame into a fine material receiving space and a coarse material receiving space. A crushing roller group I is rotatably installed on the inner wall of the frame in the coarse material receiving space. At the bottom of the partition plate, there are also crushing roller group II and crushing roller group III. Crushing roller group II is located on the inner wall of the bottom frame of the fine material receiving space, and crushing roller group III is located on the inner wall of the bottom frame of the coarse material receiving space. A screw feeder is also installed at the bottom of the frame, with the feed inlet of the screw feeder located directly below the inorganic salt raw material discharge outlet; It also includes a vacuuming mechanism, which includes vacuum pipe I and vacuum pipe II located at the top and bottom of the frame.

2. The device for pulverizing agglomerated inorganic salt raw materials according to claim 1, characterized in that: The mesh size of the screening mechanism is arranged from small to large according to the screening direction of inorganic salt raw materials.

3. The device for pulverizing agglomerated inorganic salt raw materials according to claim 1, characterized in that: The fine material holding space and the coarse material holding space are arranged one in front of the other in the frame according to the screening direction of the inorganic salt raw materials.

4. The device for pulverizing agglomerated inorganic salt raw materials according to claim 1, characterized in that: The crushing roller group I, crushing roller group II and crushing roller group III are each composed of several roller bodies. Crushing teeth for crushing inorganic salt raw materials are fixed on the outer circumferential surface of the roller body. The two ends of the roller body are rotatably mounted on the inner wall of the frame through rotary bearings, and one end extends out of the frame and is set as the power output end. A rotating power mechanism fixedly mounted on the outer wall of the frame can be connected to the end of the roller body to provide rotational force to the roller body.

5. The device for pulverizing agglomerated inorganic salt raw materials according to claim 1, characterized in that: Both the suction pipe I and the suction pipe II include an air inlet and an air outlet. The air inlet of the suction pipe I is located on the top inner wall of the frame and above the screening mechanism. The air inlet of the suction pipe II is located on the inner wall of the frame between the partition plate and the screw discharge machine. The air outlets of the suction pipe I and the suction pipe II extend outside the frame and are connected at their ends. The pump, which is installed on the outer wall of the frame, is connected to the air outlet of suction pipe I and suction pipe II to remove dust from the inside of the frame.

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