CN202356135U

CN202356135U - Fine-granularity crusher

Info

Publication number: CN202356135U
Application number: CN2011204320725U
Authority: CN
Inventors: 张兆连
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-04
Filing date: 2011-11-04
Publication date: 2012-08-01
Anticipated expiration: 2021-11-04

Abstract

A fine-granularity crusher comprises a shell, a rotor, a coal crushing plate device, a hydraulic opening device and a driving device. According to the technical key points of the fine-granularity crusher, the shell comprises a front part, a middle part and a rear part; a feeding hole is formed at the top of the middle part, while a discharge hole is formed at the bottom of the middle part; the front part and the rear part are articulated with the middle part through hinge shafts respectively; a hydraulic opening device is arranged between each of the front part and the rear part, and the middle part; the rotor is mounted on a bearing block plate of the middle part; the outlet shaft end of the main shaft of the rotor is connected with the driving device; the coal crushing plate device is arranged at the front part in parallel to the main shaft; and an adjusting device for adjusting a gap between the coal crushing plate device and the rotor is further arranged between a coal crushing plate rack of the coal crushing plate device and the front part. According to the utility model, the fine-granularity crusher can achieve a fine-granularity crushing purpose without blockage by combining the advantages of a ring-hammer coal crusher and a reversing fine-crushing machine, and abrasion of a hammer head is reduced.

Description

The fine granularity disintegrating machine

Technical field

The utility model belongs to the disintegrating apparatus technical field in the power plant soot system, specifically a kind of fine granularity disintegrating machine that is used for circulating fluidized bed boiler fuel.

Background technology

Adopt the reversible fine crusher of import at present about the broken general custom of circulating fluidized bed boiler fuel; Especially more greatly go out grain, but the greatest weakness of the thin coal breaker of reversible is the especially severe of tup wearing and tearing, it is big to change frequent maintenance amount; Expense is high, has brought a lot of inconvenience to the user.

Its reason is following:

What 1, the thin coal breaker of reversible adopted is profile of tooth broken coal plate; The broken coal plate is solid; When the material moisture that gets into coal breaker is big, granular material is easy to be bonded on the broken coal plate more for a long time, along with the extruding of tup more and more in fact, more and more harder, form an arc light face; Lost the shearing function to material, tup is serious wear on the light face;

2, another reason is the working face less (with the contact-making surface of material) of tup, easy abrasion;

3, the tup utilization rate is lower, and the tup quality is less, single tup 19kg, two tup 30kg, and it is lower that tup participation working portion accounts for whole ratio, will change soon after the front end wearing and tearing of tup.

Above problem is that reversible fine crusher is insoluble.

And former (referring to that mainly broken back particle diameter is 30mm's) ring hammer crusher is because disintegrating machine discharging opening place is provided with sieve plate; If broken back particle diameter is when 13mm is following, for guaranteeing the qualified of discharging-material size, the gap in the hole of sieve plate should be less by the size of granularity requirements design; So easy blocking when material moisture is big; Be unfavorable for that fine granularity is broken, but the ring of ring hammer crusher hammer architecture is more reasonable, but the ring of ring hammer crusher hammer architecture is more reasonable.

Summary of the invention

The purpose of the utility model provides a kind of by annular hammer coal breaker and the complementary fine granularity disintegrating machine of developing of the thin coal breaker of reversible.

The purpose of the utility model is achieved in that it includes housing, rotor, broken coal panel assembly, hydraulic pressure opening device and drive unit; It is characterized in that: described housing includes front body, middle part body and rear body; The top of middle part body is provided with feeding mouth, the bottom is provided with discharging opening; Front body and rear body are hinged through hinge and middle part body respectively; And front body and rear body are respectively and be provided with a hydraulic pressure opening device between the body of middle part; Rotor is installed on the bearing plate of middle part body, and this rotor includes main shaft in bearing and bearing block, the bearing, be sleeved on the main shaft and ring hammer that the two ends through the fixing rocking arm of disk, rocking arm connect through annulate shaft, and the axle head that goes out of main shaft links to each other with drive unit; Forwardly parallel main axis is provided with the broken coal panel assembly on the body; This broken coal panel assembly comprises the bolster that is arranged on the front body, is hinged on the broken coal grillage on the bolster, the profile of tooth broken coal plate that on the side of broken coal grillage near rotor, sets gradually and the broken arc coal of bar hole plate from top to bottom, at the adjusting device that also is being provided with gap between adjustment broken coal panel assembly and the rotor between broken coal grillage and the front body.

The broken arc coal of said bar hole plate has the radian concentric with rotor, and bar hole is outside radial pattern.

The internal orifice dimension of said ring hammer is greater than the diameter of annulate shaft.

Described adjusting device includes screw mandrel and the axle bed that is arranged on the front body outside.

The utility model discharging opening place does not establish sieve plate, and the discharging-material size of coal breaker leans on coal breaker rotor and the gap between the coal breaker crushing shell to control, and when broken coal plate or ring sledge mill damage make that the gap becomes big, can the gap be adjusted; The broken arc coal of profile of tooth broken coal plate and bar hole plate is housed on the breaker, and profile of tooth broken coal plate is contained in the top of breaker, does not participate in the control of discharging-material size; Sieve plate adopts the form of band bar hole; The hole is outside radial pattern, and crusher rotor rotates at a high speed and produces huge centrifugal force, and a part is squeezed from the hole less than the material of sieve aperture under action of centrifugal force; Increased the discharge ability of coal breaker; Owing to adopt the broken arc coal of bar hole plate, when material was stuck in during through coal breaker between the bar hole of broken coal plate, the tup of rotation can be sheared it; The effect of shearing-crushing is effective more than attrition crushing, and that crushing efficiency is wanted is high, the consumption ability is little; Do not have a lot of coal dust stick on top on the broken arc coal of the bar hole plate, reduced the wearing and tearing of tup; Tup adopts annular tup, in shattering process, is that a gradual change gets from large to small between ring hammer and broken coal plate, and the space of changing from small to big has again increased the area and the probability that contact with material; The ring hammer can rotate voluntarily during work, reduces wear, and the quality of ring hammer is equally distributed, can rotate voluntarily, and the ring hammer keeps the maximum one side of quality in the outside forever after rotor rotation is got up, so the tup wearing and tearing evenly, can obtain to greatest extent utilizing.

Description of drawings

Fig. 1 is the utility model external structure simplified schematic diagram;

Fig. 2 is the utility model internal structure simplified schematic diagram;

Fig. 3 is the structural representation of the utility model rotor 5;

Fig. 4 is the cutaway view of Fig. 3 along the B-B direction;

Fig. 5 is the structural representation of broken coal panel assembly 7 in the utility model;

Fig. 6 is the cutaway view of Fig. 5 along the A-A direction.

To combine accompanying drawing the utility model to be done further explain below through instance; But following instance only is the utility model example wherein; The rights protection scope of not representing the utility model and being limited, the rights protection scope of the utility model is as the criterion with claims.

The specific embodiment

Shown in Fig. 1～6; The primary structure of the utility model includes housing; This housing includes front body 1, middle part body 2 and rear body 3; The top of middle part body 2 is provided with feeding mouth, the bottom is provided with discharging opening, and front body 1 is hinged through hinge 8 and middle part body 2 respectively with rear body 3, and front body 1 and rear body 3 are respectively and be provided with a hydraulic pressure opening device 4 between the middle part body 2; Rotor 5 is installed on the bearing plate of middle part body; This rotor includes main shaft 13 in bearing and bearing block 14, the bearing, be sleeved on the main shaft and ring hammer 9 that the two ends through the fixing rocking arm 10 of disk 11, rocking arm connect through annulate shaft 12, and the internal orifice dimension of ring hammer is greater than the diameter of annulate shaft, and the axle head that goes out of main shaft 13 links to each other with drive unit; Forwardly parallel main axis is provided with broken coal panel assembly 7 on the body 1; This broken coal panel assembly comprises the bolster 15 that is arranged on the front body, is hinged on the broken coal grillage 18 on the bolster, the profile of tooth broken coal plate 17 that on the side of broken coal grillage near rotor, sets gradually and the broken arc coal of bar hole plate 16 from top to bottom; The broken arc coal of bar hole plate has the radian concentric with rotor, and bar hole is outside radial pattern.At the adjusting device 6 that also is provided with gap between adjustment broken coal panel assembly and the rotor between broken coal grillage 18 and the front body 1, adjusting device includes screw mandrel and the axle bed 19 that is arranged on the front body outside.In addition, do not provide drive unit among the figure.

Operation principle: drive the rotor high-speed rotation by drive unit; Make ring hammer produce centrifugal force, after material gets into coal breaker, beaten and hit, clash into by second-time breakage with the last broken coal plate of breaker by the ring of rotation at a high speed; Be brought into then in the arc-shaped gaps between broken coal plate and rotor; Can regulating of this arc-shaped gaps through adjusting device, concrete size is adjusted according to material granularity, is extruded, shears, rolls the purpose that reaches fragmentation when what material can satisfy granularity requirements when arc-shaped gaps is discharged; Material part after being broken is got rid of from the bar hole of crushing shell, and another part removes from the lower bank of coal breaker.The available centrifugal force of each ring hammer is far longer than the anti-pressure ability of coal, promptly easily reaches broken purpose.

Claims

1. fine granularity disintegrating machine; It includes housing, rotor, broken coal panel assembly, hydraulic pressure opening device and drive unit; It is characterized in that: described housing includes front body, middle part body and rear body; The top of middle part body is provided with feeding mouth, the bottom is provided with discharging opening; Front body and rear body are hinged through hinge and middle part body respectively, and front body and rear body are respectively and be provided with a hydraulic pressure opening device between the body of middle part, in the middle part of rotor is installed on the bearing plate of body; This rotor includes main shaft in bearing and bearing block, the bearing, be sleeved on the main shaft and ring hammer that the two ends through the fixing rocking arm of disk, rocking arm connect through annulate shaft, and the axle head that goes out of main shaft links to each other with drive unit; Forwardly parallel main axis is provided with the broken coal panel assembly on the body; This broken coal panel assembly comprises the bolster that is arranged on the front body, is hinged on the broken coal grillage on the bolster, the profile of tooth broken coal plate that on the side of broken coal grillage near rotor, sets gradually and the broken arc coal of bar hole plate from top to bottom, at the adjusting device that also is being provided with gap between adjustment broken coal panel assembly and the rotor between broken coal grillage and the front body.

2. fine granularity disintegrating machine according to claim 1 is characterized in that: the broken arc coal of said bar hole plate has the radian concentric with rotor, and bar hole is outside radial pattern.

3. fine granularity disintegrating machine according to claim 1 is characterized in that: the internal orifice dimension of said ring hammer is greater than the diameter of annulate shaft.

4. fine granularity disintegrating machine according to claim 1 is characterized in that: described adjusting device includes screw mandrel and the axle bed that is arranged on the front body outside.