Noise reduction mechanism for jaw crusher

Abstract

The utility model discloses a noise reduction mechanism for a jaw crusher. The noise reduction mechanism comprises a turning plate assembly mounted at an inlet of the crusher and a chute arranged at the front end of the inlet of the crusher, the turning plate assembly is rotatably mounted at the feeding position of the crusher, the inlet channel is opened when the turning plate assembly rotates to the initial position, and the chute is opened when the turning plate assembly rotates to the final position; the chute is S-shaped, and a noise reduction device is arranged in the chute; due to the fact that the bypass chute is designed to be the S-shaped chute, the workpiece circulation track is changed, and the buffering effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a noise reduction mechanism for jaw crusher. BACKGROUND

[0002] There are two kinds of discharge modes for the castings from the front conveying equipment, the first kind is directly discharged from the flap assembly into the crusher for crushing, and the second kind is discharged from the bypass chute when the crusher fails, and the noise of the two kinds of discharge modes is relatively large and sharp, which seriously affects the hearing of the workers nearby;

[0003] The traditional method to solve the above-mentioned noise of the castings discharge is to build a soundproof room outside the entire crusher to isolate the noise, but the cost is relatively large, the space is relatively occupied, and the maintenance of the crusher and the equipment nearby is not convenient, especially during the large maintenance, the soundproof room needs to be removed, so the maintenance period is relatively long, which is not conducive to the production enterprise scheduling. SUMMARY

[0004] In view of the above problems, the utility model aims at providing a noise reduction mechanism for jaw crusher which is convenient to disassemble and assemble.

[0005] The technical scheme of the utility model is realized as follows

[0006] The noise reduction mechanism for jaw crusher comprises a flap assembly installed at the inlet of the crusher and a chute arranged at the front end of the inlet of the crusher.

[0007] The flap assembly comprises a rotating shaft, a flap, a cover plate and a steel plate, the rotating shaft is connected with the flap, the back surface of the flap is provided with the cover plate, and the top and tail portions between the cover plate and the flap are connected through the steel plate.

[0008] A rubber plate is installed between the cover plate and the flap.

[0009] The noise reduction device comprises a sound-absorbing coating coated on the outer surface of the chute.

[0010] The noise reduction device comprises a rubber buffer sandwiched plate arranged on the inner wall of the chute.

[0011] The noise reduction device comprises a nitrile rubber shock-absorbing plate with magnetism pasted on the outer surface of the chute.

[0012] Compared with the prior art, the utility model has the beneficial effects that: 1, a 20mm rubber plate is added in the middle of the flap shaft assembly to absorb the noise caused by the impact of the castings;

[0013] 2. Design the bypass chute as an S-shaped chute to change the trajectory of the workpiece flow and play a buffering role;

[0014] 3. After applying the primer to the outer surface of the S-shaped chute, attach magnetic nitrile damping sheets. This only requires application to the outside of the S-shaped chute. The noise generated by the workpiece during its flow in the S-shaped chute is no longer so sharp and harsh, but becomes muffled. The noise level is reduced from 115dB to 100dB, with a significant effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the crusher's normal operating state according to this utility model;

[0016] Figure 2 This is a structural diagram of the crusher in a fault state according to this utility model;

[0017] Figure 3 This is a schematic diagram of the flip-plate assembly structure of this utility model;

[0018] In the attached diagram, 1 is the flap assembly, 2 is the chute, 3 is the initial position, 4 is the inlet channel, 5 is the end position, and 6 is the nitrile damping rubber sheet; 1.1 is the rotating shaft, 1.2 is the flap, 1.3 is the cover plate, 1.4 is the steel plate, and 1.5 is the rubber sheet. Detailed Implementation

[0019] 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. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] See Figure 1 The diagram illustrates the structure of this application. A noise reduction mechanism for a jaw crusher includes a flap assembly 1 installed at the crusher inlet and a chute 2 located at the front end of the crusher inlet. The flap assembly is rotatably installed at the crusher feed inlet. When the crusher is operating normally, the flap assembly rotates to its initial position 3 to open the inlet channel 4. When the crusher malfunctions, the flap assembly rotates to its final position 5 to open the chute. The chute is S-shaped and equipped with a noise reduction device. The S-shaped design of the chute alters the trajectory of the workpiece flow, providing a buffering effect.

[0021] The flap assembly includes a rotating shaft 1.1, a flap 1.2, a cover plate 1.3, and a steel plate 1.4; the rotating shaft is connected to the flap, and a cover is installed on the back of the flap; the top and bottom of the cover plate are connected to the flap via steel plates.

[0022] A rubber plate is installed between the cover plate and the flap. A 20mm rubber plate is added in the middle of the flap shaft assembly to absorb the noise from the impact of the casting.

[0023] The noise reduction device includes a sound-absorbing coating applied to the outer surface of the chute. Spraying the sound-absorbing coating onto the outer surface of the chute improves and reduces noise. The noise reduction device also includes a rubber buffer sandwich panel installed on the inner wall of the chute. Adding the rubber buffer sandwich panel inside the chute reduces the sharp and harsh noise generated by the workpiece flowing through the S-shaped chute.

[0024] The noise reduction device includes a magnetic nitrile damping sheet 6 adhered to the outer surface of the chute. Construction is only required on the outside of the S-shaped chute, and the noise generated by the workpiece during its flow in the S-shaped chute is no longer so sharp and harsh, becoming more muffled. The noise level is reduced from 115dB to 100dB, showing a significant effect.

Claims

1. A noise reduction mechanism for a jaw crusher, characterized in that, It includes a flap assembly installed at the inlet of the crusher and a chute set at the front end of the inlet of the crusher; the flap assembly is rotatably installed at the feed inlet of the crusher, the inlet channel is opened when the flap assembly rotates to the initial position, and the chute is opened when the flap assembly rotates to the end position; the chute is S-shaped and a noise reduction device is installed inside the chute.

2. The noise reduction mechanism for a jaw crusher according to claim 1, characterized in that, The flap assembly includes a rotating shaft, a flap, a cover plate, and a steel plate; the rotating shaft is connected to the flap, and a cover plate is installed on the back of the flap; the top and bottom of the cover plate are connected to the flap via steel plates.

3. The noise reduction mechanism for a jaw crusher according to claim 2, characterized in that, A rubber plate is installed between the cover plate and the flap.

4. The noise reduction mechanism for a jaw crusher according to claim 1, characterized in that, The noise reduction device includes a sound-absorbing coating applied to the outer surface of the chute.

5. The noise reduction mechanism for a jaw crusher according to claim 1, characterized in that, The noise reduction device includes a rubber buffer sandwich panel installed on the inner wall of the chute.

6. The noise reduction mechanism for a jaw crusher according to claim 1, characterized in that, The noise reduction device includes a magnetic nitrile damping sheet adhered to the outer surface of the chute.

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