CN207769900U - A kind of hammer mill - Google Patents

Abstract

A kind of hammer mill, including casing, the cabinet top are equipped with material inlet.Arc crushing shell and arc grid section are equipped in casing, if the arc crushing shell opens up arterial highway groove on along the circumferential direction, the arc grid section and casing elastic connection, around broken cavity is formed between the arc crushing shell and arc grid section, which is connected to material inlet and lower section is equipped with hopper；Crushing mechanism is equipped in the crusher chamber body, which includes rotor, which is equipped with several tups, and the fin with the groove match is set as at the top of the tup.The hammer mill of the utility model can sufficient broken material, can also be effectively improved material adhesion problems, improve crusher production capacity and product quality.

Description

a hammer crusher

technical field

The utility model belongs to the field of crushers, in particular to a hammer crusher.

Background technique

The hammer crusher is suitable for crushing medium-hard materials in industrial sectors such as cement, chemical industry, electric power, and metallurgy, such as secondary and fine crushing of limestone, slag, coke, coal, etc. The traditional hammer crusher mainly includes a motor, a main shaft turntable, a crushing mechanism, a crushing chamber and a hopper. The crushing mechanism used to crush minerals is located in the crushing chamber and fixed on the main shaft turntable. Driven by the motor, the crushing mechanism The crushing cavity rotates at high speed. The material enters the crushing cavity from the feeding port of the upper hopper, and is crushed by the impact, impact, shearing and grinding of the crushing mechanism. The hammer head of the traditional crusher is installed on the rotor. The high-speed rotation of the rotor drives the hammer head to rotate and swing. When the material enters the crushing chamber from the feeding port, the high-speed rotating hammer head hits the material. The high-speed rotating hammer head rushes to the crushing plate fixed in the crusher casing, and then the material larger than the size of the grate hole is retained in the crushing cavity and continues to be hit and ground by the hammer head until it is crushed to the required particle size. Finally, it is discharged out of the machine through the grate. However, it is inevitable to encounter excessive humidity and different hardness during the crushing process, which may cause the following problems: 1. At present, the crushing plate in the existing crushing cavity is generally in the shape of a long plate, and its upper part is higher than There is a certain distance from the hammer head, so this part is not within the range of the hammer head. When the material with high humidity is hit by the hammer head, it may fall to the upper part of the crushing plate, and it is easy to stick to it. If things go on like this, it will accumulate more and more The more it is, the lower the utilization rate of the material will be, and when other materials are added, it will easily cause product mixing, resulting in a decrease in product quality. 2. In the crushing chamber of the traditional crusher, the grate is installed together with the body and cannot move. When the material with high hardness and large particle size after crushing is in the middle of the hammer and the grate, it will be squeezed. Material can get stuck in the grate holes, and wet material can clog the grate, causing downtime.

Contents of the invention

The purpose of the utility model is to overcome the defects of existing crushers and provide a hammer crusher that can fully crush materials and effectively improve the problem of material adhesion. The crusher greatly improves production capacity and product quality.

The purpose of this utility model and its technical solution are to adopt the following technical solutions to achieve. A hammer crusher proposed according to the utility model includes a casing, and a feeding port is arranged on the top of the casing. The casing is provided with an arc-shaped crushing plate and an arc-shaped grate. The arc-shaped crushing plate is provided with several grooves along the circumferential direction. The arc-shaped grate is elastically connected with the casing. The arc-shaped crushing plate and the arc-shaped A crushing cavity is formed between the grates, which communicates with the feeding port and has a hopper below; a crushing mechanism is provided in the crushing cavity, and the crushing mechanism includes a rotor, and the rotor is provided with several hammerheads. The top of the hammerhead is set as a rib matching the groove.

Further, the height of the upper surface of the arc-shaped grate is lower than the height of the bottom of the groove.

Further, two grooves are provided on the curved crushing plate.

Further, four hammerheads are fixed on the rotor.

Further, several blind slots are uniformly opened in the rotor along the circumferential direction, and the bottom of the hammer head is placed inside the blind slots and fixed by pin shafts.

Further, pulleys are provided at the bottom of the hopper.

Further, both ends of the arc-shaped grate are connected to the bottom of the casing through a spring shock absorber, and the top of the spring shock absorber is welded to the arc-shaped grate, and the bottom is fixed to the casing.

By means of the above technical solution, compared with the prior art, the hammer crusher proposed by the utility model has at least the following beneficial effects:

1. The crushing plate of the utility model is arc-shaped, and the grate is also arc-shaped, and a circular crushing cavity is formed between the arc-shaped crushing plate and the arc-shaped grate. The crushing chamber of this structure can keep the incompletely crushed materials moving in the crusher body until they are completely crushed, which improves the crushing quality of the materials.

2. Several grooves are provided on the arc-shaped crushing plate of the utility model, and convex ribs matching the grooves are arranged on the hammer head. When the hammer head rotates at high speed, it can effectively scrape the crushing plate, and the two cooperate with each other to realize the full crushing of the material, and also prevent the wet material from sticking to the curved crushing plate.

3. The two ends of the arc-shaped grate of the utility model are elastically connected to the casing. When the material moves to the arc-shaped grate, if the grate leaks poorly or is not completely broken (the particle size after crushing is larger than the aperture of the grate) ) material, the grate can move downward; under the elastic force of the spring shock absorber, the grate will bounce up and return to the original cavity shape, and the arc can be shaken during the up and down vibration The material on the grate allows the material with the required particle size to pass through the arc-shaped grate smoothly and is discharged from the discharge port, avoiding the accumulation and adhesion of wet material at the grate and the material with larger particle size being stuck on the grate inside the hole.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly, it can be implemented according to the contents of the specification, and in order to make the above and other purposes, features and advantages of the utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic structural view of the curved crushing plate of the present invention.

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the invention, the specific implementation, structure, Features and their functions are described in detail below.

Please refer to FIG. 1 to FIG. 2 , a hammer crusher of the present invention includes a casing 1 , and a feeding port 11 is provided on the top of the casing 1 . The casing 1 is provided with an arc-shaped crushing plate 2 and an arc-shaped grate 3. The arc-shaped crushing plate 2 is provided with several grooves 21 along the circumferential direction. The arc-shaped grate 3 is elastically connected with the casing 1, and the arc A crushing cavity is formed around the crushing plate 2 and the arc-shaped grate bar 3 . As shown in Fig. 1, the two ends of the arc-shaped grate bar 3 are attached to the ends of the arc-shaped crushing plate 2. The crushing cavity communicates with the feeding port 11 and a hopper 12 is arranged below. Preferably, the hopper 12 is specifically arranged directly below the arc-shaped grate bar 3 . A crushing mechanism is provided in the crushing chamber, and the crushing mechanism includes a rotor 5, on which several hammerheads 6 are arranged, and the top of the hammerheads 6 is set as a rib 61 matching the groove 21.

Preferably, the height of the upper surface of the arc-shaped grate bar 3 is lower than the height of the bottom of the groove 21 . In this way, it can be avoided that when the hammer head 6 rotates to the arc-shaped grate bar 3, the top of the hammer head 6 hits the arc-shaped grate bar 3, thereby ensuring the stable operation of the crusher.

Preferably, two grooves 21 are provided on the arc-shaped crushing plate 2 . Correspondingly, the top of the hammer head 6 is set as two ribs 61 matching the two grooves.

Preferably, four hammerheads 6 are fixed on the rotor 5 to improve crushing efficiency.

Preferably, in order to prevent the hammer head 6 from moving along the circumferential direction of the rotor 5 or the hammer head 6 from moving in its own axial direction when rotating at high speed, the utility model evenly opens the rotor 5 in the circumferential direction. A number of blind slots, and then place the bottom of the tup 6 in the blind slot, and fix it with a pin so that the tup 6 and the rotor 5 will not be displaced relative to each other.

Preferably, a pulley 121 is provided at the bottom of the hopper 12 . The materials fall into the hopper 12, which is convenient to pull out the hopper 12 and take out the crushed materials.

Preferably, both ends of the arc-shaped grate bar 3 are connected to the bottom of the casing 1 through a spring shock absorber 4 , and the top of the spring shock absorber 4 is welded to the arc-shaped grate bar 3 , and the bottom is fixed to the casing 1 . The spring shock absorber that the utility model adopts is the elastic component commonly used for shock absorption of motorcycle, electric vehicle or bicycle, and its working principle and structure belong to prior art, and it can only be in the axial direction of spring (as shown in Fig. 1 It is compression or rebound reset in the vertical direction), and the reset speed is fast. Therefore, under the action of the spring force, the arc-shaped grate bar can only realize displacement in the vertical direction, and there will be no deviation, compression or reset to both sides.

The working principle of the utility model is as follows:

When working, the rotor 5 rotates at a high speed driven by the main shaft of the motor, and then the hammer head 6 fixedly connected with the rotor 5 rotates at a high speed. The material enters the crushing cavity from the feeding port 11 and is impacted by the high-speed rotating hammer head 6 to achieve primary crushing. The primary crushed material obtains kinetic energy from the hammer head 6 and rushes to the arc-shaped crushing plate 2 at high speed to achieve secondary crushing. . The ribs 61 of the hammer head 6 cooperate with the grooves 21 of the arc-shaped crushing plate 2 to further shear, extrude and grind the material, and finally achieve full crushing of the material. Materials that meet the requirements fall into the hopper 12 through the arc-shaped grate bar 3, while unqualified materials continue to be crushed repeatedly until they meet the requirements.

In the above-mentioned crushing process, if the arc-shaped grate 3 has poor material leakage, or encounters a material whose particle size is larger than the aperture of the grate, the material will exert a downward extrusion force on the arc-shaped grate 3 , the arc-shaped grate bar 3 moves down within a certain range, and under the action of the spring force of the spring shock absorber 4, the arc-shaped grate bar 3 will bounce up and return to the cavity shape of the original crushing cavity. During the vibration process, the material on the arc-shaped grate 3 can be shaken, so that the material with a particle size meeting the requirements can pass through the arc-shaped grate 3 smoothly and be discharged from the discharge port 12, avoiding the wet material on the arc-shaped grate 3 Accumulation or adhesion, and materials with larger particle size are stuck in the grate hole of the arc grate 3.

The above is only a preferred embodiment of the present utility model, and any skilled person familiar with the profession will not depart from the scope of the technical solution of the present utility model, and any simple changes made to the above embodiments according to the technical essence of the present utility model Amendments, equivalent changes and modifications all still belong to the scope of the technical solution of the present utility model.

Claims (7)

1. a kind of hammer mill, including casing (1), the casing (1) top is equipped with material inlet (11), it is characterised in that：Casing (1) arc crushing shell (2) and arc grid section (3) are equipped in, the arc crushing shell (2) is recessed if opening up arterial highway on along the circumferential direction Slot (21), the arc grid section (3) and casing (1) elastic connection, surround between the arc crushing shell (2) and arc grid section (3) It is formed and is crushed cavity, which is connected to material inlet (11) and lower section is equipped with hopper (12)；It is equipped in the crusher chamber body Crushing mechanism, the crushing mechanism include rotor (5), which is equipped with several tups (6), be set as at the top of the tup (6) with The fin (61) that the groove (21) matches.

2. a kind of hammer mill according to claim 1, it is characterised in that the upper level of the arc grid section (3) Less than the height of groove (21) slot bottom.

3. a kind of hammer mill according to claim 1, it is characterised in that open up twice on the arc crushing shell (2) Groove (21).

4. a kind of hammer mill according to claim 1, it is characterised in that fixed on the rotor (5) there are four tups (6)。

5. a kind of hammer mill according to claim 1, it is characterised in that the rotor (5) is along the circumferential direction upper uniform Several blind slots are opened up, the bottom of the tup (6) is placed in inside blind slot and is fixed by axis pin.

6. a kind of hammer mill according to claim 1, it is characterised in that hopper (12) bottom is equipped with pulley (121)。

7. a kind of hammer mill according to claim 1, it is characterised in that the both ends of the arc grid section (3) and casing (1) bottom is connected by spring damper (4), and the spring damper (4) top and arc grid section (3) welding, bottom and machine Shell (1) is affixed.