Novel ultrahigh-pressure fine crusher for coal slime filter cake

Abstract

The utility model relates to a novel ultrahigh pressure coal slime filter cake fine crushing crusher which comprises a machine shell, a working part of a rotor is rotatably installed in the inner space of the machine shell, the two ends of a main shaft of the rotor penetrate out of the machine shell and then are rotatably connected with a bearing seat, and the machine shell is installed on a machine frame of the crusher through an opening and closing device. The driving motor is arranged on one side of the machine shell, and the driving motor drives the rotor to rotate; the screen meshes of the screen are 13 mm, the screen is obliquely and fixedly installed in the machine shell, and the two ends of the screen are fixedly connected with the top of the machine shell through stainless steel plates respectively. The utility model mainly aims to provide a novel ultrahigh-pressure fine crushing crusher for coal slime filter cakes, which is suitable for a crushing system for coal slime filter cakes subjected to filter pressing by an ultrahigh-pressure filter press, and can crush ultrahigh-pressure coal slime filter cakes with water content of 13-16% to about 13mm, so that the ultrahigh-pressure coal slime filter cakes are more fully mixed with clean coal and middling coal, the sales effect of the mixture is better, and the service life of the mixture is prolonged. And the economic benefit is greatly improved.

Description

Technical Field

[0001] The utility model relates to a crusher, in particular to a novel ultra-high pressure coal slime filter cake fine crusher. Background Art

[0002] In recent years, with the large-scale mechanized mining of coal in the country, large-scale centralized washing and processing has been realized, and the coal slime generated in the washing and processing process accounts for a large part. The traditional production process is to press the washed coal slime into a coal slime filter cake with a moisture content of 25%-30% through a medium and low pressure filter press, and then use a paddle-type coal slime crusher to crush it. After crushing, it is blended with clean coal and medium coal. This blend is generally sold as power coal. The moisture content of this kind of coal slime is relatively high, and the particle size after crushing is relatively large, generally around 50mm, but the particle size generally required for power coal is 13mm, resulting in poor sales of the blend and a corresponding small improvement in economic benefits.

[0003] The current process is to use an ultra-high pressure filter press to press the washed coal slime into a coal slime filter cake with a moisture content of 13%-16%. Due to the low moisture content, this coal slime filter cake has a higher viscosity and hardness, and the paddle-type coal slime crusher can no longer crush it. Utility Model Content

[0004] The main purpose of the utility model is to provide a new type of ultra-high pressure coal slime filter cake fine crusher, which is suitable for the coal slime filter cake crushing system after filtration by an ultra-high pressure filter press. The ultra-high pressure coal slime filter cake with a moisture content of 13%-16% can be crushed to about 13mm, so that it can be more fully blended with clean coal and medium coal, the sales effect of the blend is also better, and the economic benefits are greatly improved.

[0005] In order to achieve the above purpose, the utility model provides a novel ultra-high pressure coal slime filter cake fine crusher, comprising:

[0006] The casing has a working part of the rotor rotatably installed in the inner space of the casing. The two ends of the main shaft of the rotor pass through the casing and are rotatably connected to the bearing seat. The casing is installed on the frame of the crusher through an opening and closing device.

[0007] A driving motor is arranged on one side of the casing, and drives the rotor to rotate;

[0008] The screen has a mesh size of 13 mm. The screen is fixedly installed inside the casing at an angle, and both ends of the screen are fixedly connected to the top of the casing through stainless steel plates.

[0009] Preferably, the opening and closing device comprises a hydraulic cylinder and two opening and closing shafts, and an opening and closing shaft is respectively arranged at both ends of the hydraulic cylinder, wherein one opening and closing shaft is fixedly mounted on the casing, and the other opening and closing shaft is fixedly mounted on the frame.

[0010] Preferably, the rotor further comprises a rotor disk, a disk spacer, a key, a hammer head, a hammer shaft and a hammer spacer, one end of the rotor disk and the hammer spacer are fixed to the main shaft via a key, and the hammer head and the hammer spacer are fixed to the rotor disk via the hammer shaft.

[0011] Preferably, the internal space of the casing is 2-3 times the maximum diameter of the rotor.

[0012] Preferably, the hammer head is laser cut from NM500 high wear-resistant steel plate.

[0013] Preferably, the screen is in a semicircular shape and is formed by rolling a 12 mm thick manganese plate after laser cutting.

[0014] The beneficial effects of the utility model are:

[0015] The ultra-high pressure coal slime filter cake fine crusher of the utility model can crush the ultra-high pressure coal slime filter cake with a moisture content of 13%-16% to about 13mm, so that it can be more fully blended with clean coal and medium coal, the sales effect of the blended material is also better, and the economic benefits are greatly improved. In addition, an opening and closing device is added to the cover body outside the casing, and the opening and closing of the cover body can be controlled by controlling the opening and closing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a top view of the crusher of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the rotor of the crusher of the utility model;

[0019] Figure 3 It is a front view of the crusher of the utility model.

[0020] Description of Reference Numerals

[0021] 1. Driving motor; 2. Small pulley; 3. Belt; 4. Large pulley;

[0022] 5. Bearing seat; 6. Main shaft; 7. Rotor disk; 8. Disk spacer;

[0023] 9. key; 10. hammer head; 11. hammer shaft; 12. hammer spacer sleeve;

[0024] 13. Casing; 14. Stainless steel plate; 15. High-strength bolts; 16. Opening and closing shaft;

[0025] 17. Hydraulic cylinder; 18. Hydraulic oil pipe; 19. Electric hydraulic pump station; 20. Screen. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] like Figures 1 to 3 As shown, the utility model provides a new type of ultra-high pressure coal slime filter cake fine crusher. The new type of ultra-high pressure coal slime filter cake fine crusher of this embodiment is based on the structure of a traditional hammer crusher. By improving the internal and external structure of the casing 13, the structure and material of the hammer head 10, and the material and structure of the screen 20, the crushing particle size, efficiency, processing volume and service life of the ultra-high pressure coal slime filter cake are significantly improved. The improvement of the internal structure of the casing 13 expands the internal space of the casing 13 to two to three times the diameter of the rotor device (i.e., the maximum diameter of the rotor), and welds a stainless steel plate 14 inside the casing 13. Through the double improvement inside the casing 13, the situation of machine blockage caused by coal slime sticking inside the casing 13 is greatly reduced.

[0028] The external structure of the casing 13 is improved by adding an opening and closing device to the outside of the casing 13. If there is sticky coal slime inside the casing 13, the electric hydraulic pump station 19 can be operated to control the hydraulic cylinder 17 to open the casing 13 through the hydraulic oil pipe 18. After opening, the coal slime is cleaned. After cleaning, the electric hydraulic pump station 19 is operated to close the casing 13 through the hydraulic cylinder 17. The entire opening and closing process is relatively easy and quick, which greatly reduces the maintenance cost and time. In this embodiment, if Figure 3 As shown, the opening and closing device includes a hydraulic cylinder 17 and two opening and closing shafts 16. An opening and closing shaft 16 is respectively arranged at both ends of the hydraulic cylinder 17. The mounting base of one opening and closing shaft 16 is fixedly mounted on the cover body, and the mounting base of the other opening and closing shaft 16 is fixedly mounted on the frame.

[0029] The improvement of the structure and material of the hammer head 10, although the ultra-high pressure coal slime filter cake has a certain hardness, but it is much lower than the hardness of gangue, sandstone, etc., so the hammer head 10 is improved from the original manganese steel cast hammer head 10 to NM500 high wear-resistant steel plate laser cutting, which can still meet the use requirements of ultra-high pressure coal slime filter cake crushing. On the premise of meeting the use requirements, the production cost and production cycle have been greatly reduced.

[0030] Improvements in the material and structure of the screen 20. As the ultra-high pressure coal slime filter cake is still lower in hardness than gangue, sandstone, etc., the screen 20 is improved from the original manganese steel cast screen 20 of about 50mm thickness to a 12mm thick manganese plate laser cut and rolled, which greatly reduces the production cost and production cycle; as the ultra-high pressure coal slime filter cake has a certain viscosity and is easy to stick to the screen hole, the original 50mm thick screen 20 is basically impossible to clean itself under the premise of equipment operation, but the 12mm thick screen 20 can be cleaned by hammer 10 when the equipment is running. The high-speed hammering of coal slime generates a certain slight vibration. The slight vibration of the screen 20 can just clean the coal slime stuck in the screen hole, which can improve the crushing efficiency. Because of the self-cleaning function of the screen 20 (the hammer head 10 hits the screen 20 to generate vibration, shaking off the coal slime in the screen hole), the screen hole can be reduced to 13mm at a minimum, thereby ensuring that the ultra-high pressure coal slime filter cake with a moisture content of 13%-16% can be crushed to about 13mm, so that it can be more fully mixed with clean coal and medium coal, and the sales effect of the mixture is also better, and the economic benefits are greatly improved. In addition, the two ends of the screen 20 are fixedly connected to the lower end of the stainless steel plate 14, so that the stainless steel plate 14 forms a channel at both ends of the rotor to prevent the coal slime from falling into other spaces inside the casing 13.

[0031] Specifically, Figures 1 to 3 As shown, the rotor is rotatably installed in the inner space of the casing 13, and the working part of the rotor is rotatably installed in the casing 13. The two ends of the main shaft 6 of the rotor pass through the casing 13 and are rotatably connected with the bearing seat 5. The bearing seat 5 is fixedly installed on the casing 13 by a group of high-strength bolts 15. The top of the casing 13 is provided with an opening, and a cover body is provided on the opening. The cover body is installed on the casing 13 through an opening and closing device, and a discharge port is provided below the casing 13; the driving motor 1 is arranged on one side of the casing 13, and the driving motor 1 drives the rotor to rotate. In addition, the rotor also includes a rotor disk 7, a disk spacer sleeve 8, a key 9, a hammer head 10, a hammer shaft 11 and a hammer spacer sleeve 12. One end of the rotor disk 7 and the hammer spacer sleeve 12 are fixed to the main shaft 6 through the key 9, and the hammer head 10 and the hammer spacer sleeve 12 are fixed to the rotor disk 7 through the hammer shaft 11.

[0032] Specifically, the output shaft of the driving motor 1 is fixedly connected to the small pulley 2, one end of the main shaft 6 of the rotor is fixedly connected to the large pulley 4, and the small pulley 2 and the large pulley 4 are connected by a belt 3. In this way, the driving motor 1 drives the main shaft 6 to rotate, thereby driving the rotor to rotate.

[0033] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A new type of ultra-high pressure coal slime filter cake fine crusher, characterized in that: include: A casing, wherein the working part of the rotor is rotatably mounted in the inner space of the casing, and both ends of the main shaft of the rotor respectively pass through the casing and are rotatably connected to the bearing seat, and the casing is mounted on the frame of the crusher through an opening and closing device; A driving motor, the driving motor is arranged on one side of the housing, and the driving motor drives the rotor to rotate; The sieve has a sieve hole of 13 mm, and the sieve is fixedly installed inside the casing at an angle, and both ends of the sieve are fixedly connected to the top of the casing through stainless steel plates.

2. A novel ultra-high pressure coal slime filter cake fine crusher according to claim 1, characterized in that: The opening and closing device comprises a hydraulic cylinder and two opening and closing shafts. The two ends of the hydraulic cylinder are respectively provided with an opening and closing shaft. One of the opening and closing shafts is fixedly mounted on the casing, and the other opening and closing shaft is fixedly mounted on the frame.

3. The novel ultra-high pressure coal slime filter cake fine crusher according to claim 1 is characterized in that: The rotor also includes a rotor disk, a disk spacer, a key, a hammer head, a hammer shaft and a hammer spacer. One end of the rotor disk and the hammer spacer are fixed to the main shaft through the key, and the hammer head and the hammer spacer are fixed to the rotor disk through the hammer shaft.

4. The novel ultra-high pressure coal slime filter cake fine crusher according to claim 1 is characterized in that: The internal space of the casing is 2-3 times the maximum diameter of the rotor.

5. The novel ultra-high pressure coal slime filter cake fine crusher according to claim 3 is characterized in that: The hammer head is made of NM500 high wear-resistant steel plate by laser cutting.

6. The novel ultra-high pressure coal slime filter cake fine crusher according to claim 1 is characterized in that: The screen is in a semicircular ring shape and is formed by rolling a 12 mm thick manganese plate after laser cutting.

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