Anti-sticking hammer head for sampling and sample preparation crusher

Abstract

The utility model relates to the technical field of coal sampling and sample preparation equipment, in particular to an anti-sticking hammer head for a sampling and sample preparation crusher, which comprises a hammer head main body, the hammer head body is of a pear-shaped structure, the top of the hammer head body is designed to be in a smooth arc shape, when the arc-shaped top makes contact with materials, impact force can be effectively dispersed, and the situation that the hammer head is damaged due to excessive local stress is avoided. The bottom of the hammerhead main body is gradually narrowed, so that the material flowing direction can be guided, the crushing efficiency and the material discharging speed are improved, and the residence time of materials around the hammerhead is shortened; the front face of the hammer head body is a pear-shaped front tangent plane, the front tangent plane penetrates from the top to the bottom, the side contour line of the front tangent plane is a double-cosine-curve-shaped arc, relative movement is generated between the double-cosine-curve-shaped front tangent plane and materials, and therefore shearing force is applied to the materials, and the materials can be efficiently crushed; and the materials can fall off due to the action of shearing force in the rotating process, so that the materials are difficult to form stable adhesion on the hammer head, and the defect that the materials are easy to adhere to the hammer head is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal sampling and preparing equipment technical field, concretely relates to a kind of anti-sticking material hammer head for sampling and preparing crusher. BACKGROUND

[0002] In the process of sampling and preparing ore, coal and other materials, the crusher is one of the important equipment. The hammer head in the crusher plays a key role in crushing materials. However, the traditional hammer head shape and structure have some problems, for example, when crushing sticky materials, the materials are easy to adhere to the hammer head, causing uneven weight of the hammer head, affecting the crushing efficiency and crushing effect, and as the amount of adhered materials increases, it also increases the energy consumption of the equipment, reduces the service life of the equipment, and also affects the accuracy of subsequent material sampling and preparation. To solve the above problems, it is necessary to design an anti-sticking material hammer head for sampling and preparing crusher. SUMMARY

[0003] The utility model aims at overcoming the shortcomings of the prior art, and proposes to design an anti-sticking material hammer head for sampling and preparing crusher to solve the problem of easy material sticking of traditional hammer head when crushing sticky materials, improve the material crushing efficiency and the representativeness of sampling and preparing samples, and avoid sample mixing.

[0004] The utility model solves the technical problems by adopting the technical scheme of:

[0005] An anti-sticking material hammer head for sampling and preparing crusher, comprising a hammer head body, a tangent surface, a mounting hole and an anti-sticking coating. The hammer head body is in a pear-shaped structure, with a smooth arc at the top. When the arc top contacts with the material, it can effectively disperse the impact force, avoiding damage to the hammer head due to excessive local stress. The bottom of the hammer head body gradually narrows towards the center line of the hammer head body, which can guide the flow direction of the material, improve the crushing efficiency and the discharge speed of the material, and reduce the residence time of the material around the hammer head. The front surface of the hammer head body is a pear-shaped tangent surface, which penetrates from the top to the bottom. The side profile of the tangent surface is in the form of a double cosine curve. The tangent surface in the form of a double cosine curve moves relative to the material, thereby applying a shearing force to the material. This not only efficiently crushes the material, but also causes it to fall off during rotation due to the shearing force. The material is difficult to form a stable adhesion on the hammer head, solving the problem of easy material sticking of the hammer head.

[0006] Further, the surface of the hammer head body is coated with an anti-sticking coating, further avoiding the problem of easy material sticking of the hammer head when crushing sticky materials.

[0007] Further, a mounting hole is provided at the top of the hammer head body for precise installation of the hammer head on the rotor of the crusher.

[0008] Further, the angle between the double-cosine curve form arc and the center line of the hammer head body is a tangent angle, and the tangent angle ranges from 15° to 60°.

[0009] Further, the tangent angle is 30° or 45°.

[0010] Further, a damping wear-resistant sleeve is mounted in the mounting hole, so that the rigid impact between the hammer head and the rotor can be reduced.

[0011] Further, the damping wear-resistant sleeve is made of polyether ether ketone material.

[0012] Further, the hammer head body is made of high manganese steel wear-resistant alloy material.

[0013] Further, the anti-adhesion coating is made of polyether ether ketone material.

[0014] Technical effects of the utility model:

[0015] Compared with the prior art, the pear-shaped structure of the hammer head body and the tangent surface cooperate to impact and shear and crush the material, and due to the shearing action of the tangent surface and the low adhesion of the anti-adhesion coating, the material is difficult to adhere to the hammer head, so that the weight uniformity and the stability of the crushing performance of the hammer head are effectively ensured, and the crushing efficiency, the crushing effect and the accuracy of sampling and preparation of the sampling and preparation crusher are significantly improved, the service life of the hammer head is effectively prolonged, and the maintenance cost of the equipment is reduced. The anti-adhesion hammer head of the utility model has a very broad application prospect in the sampling and preparation crusher of ores, coal and other materials, and provides more efficient and accurate technical support for material sampling and preparation. Overall, the utility model overcomes the drawbacks of the prior art that the hammer head is easy to adhere to the material, and significantly improves the crushing efficiency and the accuracy of sampling and preparation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the anti-adhesion hammer head of the sampling and preparation crusher of the utility model;

[0017] Figure 2 It is a front view of the anti-adhesion hammer head of the sampling and preparation crusher of the utility model;

[0018] Figure 3 It is a left view of the anti-adhesion hammer head of the sampling and preparation crusher of the utility model;

[0019] Figure 4 It is an A-A sectional view of the anti-adhesion hammer head of the sampling and preparation crusher of the utility model; Figure 3

[0020] Figure 5 It is a top view of the anti-adhesion hammer head of the sampling and preparation crusher of the utility model.

[0021] ​In the diagram, 1. Hammer head body; 2. Cross-section; 3. Mounting hole; 4. Shock-absorbing and wear-resistant sleeve; 5. Anti-stick coating. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] Example 1

[0024] like Figures 1-5 As shown in the figure, this embodiment relates to an anti-sticking hammer for a sampling crusher, which includes a hammer body 1, a tangential surface 2, a mounting hole 3, a shock-absorbing and wear-resistant sleeve 4, and an anti-sticking coating 5.

[0025] The hammerhead body 1 has a pear-shaped structure. The top of the hammerhead body 1 is designed with a smooth arc shape. When the arc-shaped top comes into contact with the material, it can effectively disperse the impact force, prevent the hammerhead from being damaged due to excessive local stress, and make the hammerhead more evenly stressed during the crushing process. The bottom of the hammerhead body 1 gradually narrows to form a pear-shaped structure. This structure can cleverly guide the material to flow in a specific direction during the crushing operation, which greatly improves the crushing efficiency and the material discharge speed, and reduces the residence time of the material around the hammerhead.

[0026] The front of the hammerhead body 1 is a pear-shaped tangent 2, which extends from the top to the bottom. The side contour of the tangent 2 is an arc in the form of a double cosine curve, ensuring no dead angles in contact between the hammerhead and the material. The angle between the double cosine curve and the centerline of the hammerhead body 1 is the chord-perpendicular angle, which ranges from 15° to 60°, and is preferably 30° in this embodiment. When the hammerhead is installed on the crusher rotor and rotates at high speed, relative motion occurs between the tangent 2 and the material, thereby applying shear force to the material. In this shearing crushing mode, the material is gradually cut and torn, which can more efficiently destroy the structural integrity of the material compared to the traditional simple impact crushing method, making the material easier to break into fine particles. For example, when crushing coal, the tangent 2 can cut into the coal block like a sharp blade, breaking it into smaller fragments. Compared to traditional impact crushing, this shearing crushing method can more deeply destroy the internal structure of the coal, making it easier to crush the coal into particle sizes that meet the sampling requirements. Meanwhile, due to the continuous action of shearing force, it is difficult for materials to form a stable adhesion on the hammer head. Even if a small amount of material is temporarily attached, it will fall off due to the shearing force during subsequent rotation, effectively solving the problem of material sticking.

[0027] The hammer head body 1 is coated with an anti-adhesion coating 5; the anti-adhesion coating 5 is made of polyether ether ketone material, which has high mechanical strength, high temperature resistance, impact resistance, flame resistance, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, radiation resistance and excellent electrical properties, and has extremely low friction coefficient and surface properties, and is firmly attached to the surface of the hammer head through a thermal spraying process. When the material contacts the hammer head coated with the anti-adhesion coating 5, the material is difficult to infiltrate and adhere to the surface of the anti-adhesion coating 5 based on the low surface energy characteristics of the anti-adhesion coating 5, thereby effectively reducing the material adhesion phenomenon.

[0028] The hammer head body 1 is coated with an anti-adhesion coating 5; the anti-adhesion coating 5 is made of polyether ether ketone material, which has high mechanical strength, high temperature resistance, impact resistance, flame resistance, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, radiation resistance and excellent electrical properties, and has extremely low friction coefficient and surface properties, and is firmly attached to the surface of the hammer head through a thermal spraying process. When the material contacts the hammer head coated with the anti-adhesion coating 5, the material is difficult to infiltrate and adhere to the surface of the anti-adhesion coating 5 based on the low surface energy characteristics of the anti-adhesion coating 5, thereby effectively reducing the material adhesion phenomenon.

[0029] The hammer head body 1 is made of high manganese steel wear-resistant alloy material. When the hammer head body 1 is impacted, the surface thereof will be work-hardened, and the hardness thereof will be significantly improved, so that the hammer head body 1 has excellent wear resistance and impact resistance.

[0030] In the working process of the utility model, the anti-adhesion hammer head rotates with the rotor of the crusher at high speed, the pear-shaped structure of the hammer head body 1 and the side profile line double-cosine curve form of the tangent surface 2 first impact and guide the material, so that the material is gathered to the area where the tangent surface 2 is located. Then, the tangent surface 2 shears and crushes the material, and the material is cut into smaller pieces. Due to the shearing action of the tangent surface 2 and the low adhesion of the anti-adhesion coating 5, the material is difficult to adhere to the hammer head, so that the weight uniformity of the hammer head and the stability of the crushing performance are ensured. This enables the sampling and preparation crusher to continuously and efficiently operate, the crushing efficiency is significantly improved, the particle size of the crushed material is more uniform, and the accuracy of the sampling and preparation is effectively guaranteed. Meanwhile, the service life of the anti-adhesion hammer head is prolonged, and the maintenance cost of the equipment is greatly reduced. The utility model can be applied to the sampling and preparation crusher of ore, coal and other materials, and has wide application prospect.

[0031] The above detailed description is only a specific case of the present application, and the patent protection scope of the present application includes but is not limited to the above detailed description. Any appropriate changes or modifications made by any ordinary skilled person in the technical field to the present application shall fall within the patent protection scope of the present application.

Claims

1. An anti-sticking hammer for a sample crusher, characterized in that, It includes a hammerhead body; the hammerhead body has a pear-shaped structure, with a smooth arc at the top and a bottom that gradually narrows towards the center line of the hammerhead body; the front of the hammerhead body is a pear-shaped tangent, which runs from the top to the bottom, and the side contour of the tangent is an arc in the form of a double cosine curve.

2. The anti-sticking hammerhead for a sample crusher according to claim 1, characterized in that, The surface of the hammerhead body is coated with an anti-stick coating.

3. The anti-sticking hammerhead for a sample crusher according to claim 2, characterized in that, The anti-stick coating is made of polyetheretherketone (PEEK).

4. The anti-sticking hammerhead for a sample crusher according to claim 1, characterized in that, The hammerhead body has a mounting hole on its top.

5. The anti-sticking hammerhead for a sample crusher according to claim 1, characterized in that, The angle between the double cosine curve arc and the center line of the hammer body is the chord-perpendicular angle, which ranges from 15° to 60°.

6. The anti-sticking hammerhead for a sample crusher according to claim 5, characterized in that, The chord angle is 30° or 45°.

7. The anti-sticking hammerhead for a sample crusher according to claim 4, characterized in that, A shock-absorbing and wear-resistant sleeve is installed inside the mounting hole.

8. The anti-sticking hammerhead for a sample crusher according to claim 7, characterized in that, The shock-absorbing and wear-resistant sleeve is made of polyetheretherketone (PEEK).

9. The anti-sticking hammerhead for a sample crusher according to claim 1, characterized in that, The hammerhead body is made of high manganese steel wear-resistant alloy material.

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