CN201930824U

CN201930824U - Novel screen plate suitable for hammer crusher

Info

Publication number: CN201930824U
Application number: CN2009202977186U
Authority: CN
Inventors: 高培桥; 杜衍峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-10
Filing date: 2009-12-10
Publication date: 2011-08-17
Anticipated expiration: 2019-12-10

Abstract

The utility model relates to a screen plate suitable for a hammer crusher. The screen plate suitable for the hammer crusher is characterized in that a circular arc-shaped bulge is arranged on the surface of a screen bar on the side of a material feed opening, a short-distance passage on the side of the material feed opening is linearly arranged, the rest part of the passage is arranged in an involute manner, and strengthening ribs and positioning strengthening ribs are arranged at the contour bend where the stress of the screen bar is more centralized. The strength of the screen bar, the permeability as well as the adaptability to materials and the adaptability to the moisture of materials are enhanced respectively, the blocking frequency of the hammer crusher is effectively reduced, and the effective service life of the screen bar is prolonged.

Description

A kind of novel sieve plate that is applicable to hammer mill

Affiliated technical field

The utility model relates to a kind of sieve plate that is applicable to hammer mill.

Background technology

At present, hammer (ring hammer type, counterattack hammer) disintegrating machine is used widely in industrial production, particularly use aspect broken particularly extensively at raw coal, and the sieve plate ubiquity that present stage uses on hammer mill that sieve plate weak point service time, easy deformation, material permeability are poor, ature of coal bad adaptability, material moisture content surpass shortcomings such as the easy obstruction in 9% back.

Summary of the invention

By the operation principle of hammer mill as can be known, the sieve plate distortion mainly concentrates on the position that stress is comparatively concentrated, and the main cause that disintegrating machine stops up is that material is bonded on the material channel wall of sieve plate, causes material channel to diminish and stops up fully until material.In order to solve sieve plate ubiquity that present stage uses on hammer mill that weak point service time, easy deformation, material permeability are poor, ature of coal bad adaptability, material moisture content surpass 9% back shortcoming such as obstruction easily, the utility model provides a kind of sieve plate, this sieve plate not only grating is not yielding, and material adaptability is strong, the material permeability is strong, can effectively reduce the obstruction generation frequency of disintegrating machine, prolong sieve plate service time, improve the hammer mill operating efficiency.

The technical scheme that the utility model technical solution problem is adopted is: sieve plate is that whole antifriction metal (AFM) casting forms, its design feature is that material inlet side grating surface is circular-arc projection, material inlet side short distance passage is linearly arranged, the passage remainder is that involute is arranged, reinforcement is arranged in the profile turning point that the grating stress ratio is concentrated.

The invention has the beneficial effects as follows, the sieve plate high strength and deformation, effective storage life prolongs, permeability is stronger, conformability to material adaptability and material moisture content is improved, and effectively reduces the obstruction generation frequency of disintegrating machine, improves the hammer mill operating efficiency.

Description of drawings

The present invention is further described with enforcement below in conjunction with accompanying drawing.

Fig. 1 is a front view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a vertical view of the present invention.

1. head support plates, 2. sieve aperture, 3. reinforcement among the figure, 4. sieve aperture, 5. reinforcement, 6. grating, 7. sieve aperture, 8. reinforcement, 9. sieve aperture, 10. reinforcement, 11. sieve apertures, 12. afterbody gripper shoes, 13. gratings, 14. the location reinforcement, 15. location reinforcements, 16. location reinforcements, 17. the location reinforcement, 18. material inlets, 19. material outlets.

The specific embodiment

By the operation principle of hammer mill as can be known, the sieve plate distortion mainly concentrates on the position that stress is comparatively concentrated, and the main cause that disintegrating machine stops up is that material is bonded on the material channel wall of sieve plate, causes material channel to diminish and stops up fully until material.The present invention is exactly structure, material channel shape and the material inlet face grating surface configuration that changes sieve plate, improve sieve plate intensity, shorten the time of staying of material in disintegrating machine, reduce the resistance of material in material channel, thereby make grating intensity, permeability, material adaptability, the conformability of material moisture content is improved, effectively reduce the obstruction generation frequency of disintegrating machine, improve the grating Acceptable life.

This sieve plate is by head support plate (1), afterbody gripper shoe (12) is installed on the sieve plate arc bracing frame of hammer mill one by one, except that the sieve aperture (2) (4) (6) (9) of sieve plate self, also utilize location reinforcement (14) (15) (16) (17) and adjacent sieve plate to form sieve aperture.

This sieve plate is that whole antifriction metal (AFM) casting forms, its design feature is that material inlet (18) side grating surface is circular-arc projection, material inlet (19) side short distance passage is linearly arranged, the passage remainder is that involute is arranged, angle A, B, C, D, E, F, G, H are all less than 87 degree and greater than 45 degree, all greater than 93 degree and less than 135 degree, reinforcement (3) (5) (8) (10) and location reinforcement (14) (15) (16) (17) are arranged in the profile turning point that the grating stress ratio is concentrated for angle J, K, M, N.

Its operation principle is in time to assemble among (13) two gratings of grating (6) after the circular-arc projection of entrance side grating can make the powder material that is bonded in qualified material after the pulverizing and the material on the bulk materials by collision, can effectively reduce the time of staying of qualified material in disintegrating machine, the passage length that material inlet is linearly arranged is controlled in the 10mm, rest channels is gradually open form layout, material belongs to during by beeline channel to be forced to pass through, resistance force diminishes during subsequently through open form passage gradually, material very easily passes through, improve the hammer mill operating efficiency thereby reach, reduce disintegrating machine and stop up the purpose that the frequency takes place.

Claims

1. sieve plate that is applicable to hammer mill, sieve plate is that whole antifriction metal (AFM) casting forms, it is characterized in that: material inlet (18) side grating surface is circular-arc projection, material inlet (19) side short distance passage is linearly arranged, the passage remainder is that involute is arranged, angle A, B, C, D, E, F, G, H are all less than 87 degree and greater than 45 degree, all greater than 93 degree and less than 135 degree, reinforcement (3,5,8,10) and location reinforcement (14,15,16,17) are arranged in the profile turning point that the grating stress ratio is concentrated for angle J, K, M, N.