Multi-stage composite jaw crusher

Abstract

The utility model discloses a multi-stage composite jaw crusher, which belongs to the technical field of cement production and comprises a crushing box, a feeding part is arranged at the upper end of the crushing box, a crushing roller is arranged at the upper end in the crushing box, a rotating structure is arranged on one side of the crushing roller, a guide plate is arranged below the crushing roller, and a first jaw plate is arranged on one side below the guide plate. The screening assembly is arranged, two sets of screening plates are installed below the first jaw plate and the second jaw plate, the screening plates conduct vibration screening on the crushed raw materials when vibration is generated when the jaw plates collide with the raw materials, the raw materials can be conveniently divided into different sizes and specifications, and operation is easy and convenient. The protection assembly is arranged, so that the folding soft cover is fixed to the outer side of the telescopic rod through the installation ring and can shield and protect the spring on the surface of the telescopic rod, the spring is effectively prevented from being polluted and damaged by dust, and the service life of the spring is effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cement production, and specifically relates to a multi-stage compound jaw crusher. Background Art

[0002] Jaw crusher is also called jaw crusher, or jaw crusher for short. It is mainly used for medium-sized crushing of various ores and bulk materials. It is widely used in mining, smelting, building materials, highways, railways, water conservancy and chemical industries. The maximum compressive strength of the crushed material is 320MPa. The performance characteristics are large crushing ratio, uniform product particle size, simple structure, reliable performance, easy maintenance and low operating cost.

[0003] Chinese patent application No. 202220811342.1 discloses a multi-stage compound jaw crusher, including: a crushing box, a first rotating shaft, a crushing roller, a first jaw plate, a second jaw plate, a spring, a second rotating shaft and a cam; using the above structure, the stone is initially crushed by two crushing rollers, and the stone is secondarily crushed by the first jaw plate and the second jaw plate to obtain smaller stones, thereby improving the product experience; moreover, through the secondary crushing, it can be avoided that when the primary crushing is performed, the first jaw plate and the second jaw plate are subjected to excessive impact from the stone, which causes the first jaw plate and the second jaw plate to be damaged, thereby increasing the service life of the product.

[0004] In the above-mentioned patent disclosure, 1. The particle sizes of the raw materials after crushing are different, and they need to be filtered and screened to separate the raw materials of different particle sizes; 2. When the raw materials are crushed, dust is easily generated, and the generated dust is easy to cause pollution and damage to the spring. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a multi-stage compound jaw crusher, which has the characteristics of convenient screening and good protection effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage compound jaw crusher, comprising a crushing box, a feeding part is arranged at the upper end of the crushing box, a crushing roller is arranged at the upper end inside the crushing box, a rotating structure is arranged on one side of the crushing roller, a guide plate is arranged below the crushing roller, a first jaw plate is arranged on one side below the guide plate, a second jaw plate is arranged on the other side below the guide plate, a driving structure is arranged on one side of the second jaw plate, a screening assembly is arranged below the first jaw plate and the second jaw plate, a telescopic rod is arranged between the second jaw plate and the crushing box, and a protective assembly is arranged on the outside of the telescopic rod.

[0007] Preferably, the screening assembly includes a mounting plate, a supporting structure, a screening plate and a discharge port, wherein two groups of screening plates are arranged at the lower end of the crushing box, a mounting plate is arranged between one end of the screening plate and the crushing box, a discharge port is arranged at a position corresponding to the screening plate inside the crushing box, and a supporting structure is arranged at the bottom of the screening plate.

[0008] Preferably, the support structure comprises a support plate and a buffer pad, wherein a support plate is arranged inside the crushing box and below the screening plate, and a buffer pad is arranged on the upper surface of the support plate.

[0009] Preferably, a guide plate is provided at the upper end of the bottom plate of the crushing box and below the screening plate, and the guide plate is arranged as an inclined structure.

[0010] Preferably, the protective assembly includes a mounting ring, a folding soft cover and a smooth layer, wherein mounting rings are provided on the surfaces of the crushing box and the second jaw plate, a folding soft cover is provided between the two sets of mounting rings and on the outside of the telescopic rod, and a smooth layer is provided on the outer surface of the folding soft cover.

[0011] Preferably, a plurality of elastic rods are arranged on one side of the foldable soft cover close to the telescopic rod, and the elastic rods are arranged as a telescopic structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a screening assembly, so that two groups of screening plates are installed under the first jaw plate and the second jaw plate. When the jaw plate collides with the raw material, the screening plate vibrates and screens the crushed raw material, which can conveniently divide the raw material into different sizes and specifications, and the operation is simple and convenient.

[0014] 2. The utility model is provided with a protective component, so that the foldable soft cover is fixed to the outside of the telescopic rod through a mounting ring, so that the spring on the surface of the telescopic rod can be shielded and protected, effectively avoiding the spring from being damaged by dust pollution and effectively extending the service life of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is the front view of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0018] Figure 4 For this utility model Figure 2 A magnified view of point B;

[0019] In the figure: 1. Crushing box; 2. Screening assembly; 21. Mounting plate; 22. Support structure; 221. Support plate; 222. Buffer pad; 23. Guide plate; 24. Screening plate; 25. Discharge port; 3. Rotating structure; 4. Feeding part; 5. Crushing roller; 6. Guide plate; 7. First jaw plate; 8. Second jaw plate; 9. Protective assembly; 91. Elastic rod; 92. Mounting ring; 93. Folding soft cover; 94. Smooth layer; 10. Telescopic rod; 11. Driving structure. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] See also Figure 1-4 The utility model provides the following technical solutions: a multi-stage compound jaw crusher comprises a crushing box 1, a feeding part 4 is arranged at the upper end of the crushing box 1, a crushing roller 5 is arranged at the upper end inside the crushing box 1, a rotating structure 3 is arranged on one side of the crushing roller 5, a guide plate 6 is arranged below the crushing roller 5, a first jaw plate 7 is arranged on one side below the guide plate 6, a second jaw plate 8 is arranged on the other side below the guide plate 6, a driving structure 11 is arranged on one side of the second jaw plate 8, a screening component 2 is arranged below the first jaw plate 7 and the second jaw plate 8, a telescopic rod 10 is arranged between the second jaw plate 8 and the crushing box 1, and a protective component 9 is arranged on the outside of the telescopic rod 10.

[0023] Specifically, the screening assembly 2 includes a mounting plate 21, a supporting structure 22, a screening plate 24 and a discharge port 25, wherein two groups of screening plates 24 are arranged at the lower end of the crushing box 1, a mounting plate 21 is arranged between one end of the screening plate 24 and the crushing box 1, a discharge port 25 is arranged at a position corresponding to the screening plate 24 in the crushing box 1, and a supporting structure 22 is arranged at the bottom of the screening plate 24.

[0024] By adopting the above technical solution, the screening plate 24 is fixed inside the mounting plate 21 and supported by the supporting structure 22. The screening plate 24 screens the crushed raw materials into three groups, which are then discharged through the discharge port 25, facilitating the production of cement.

[0025] Specifically, the support structure 22 includes a support plate 221 and a buffer pad 222, wherein the support plate 221 is arranged inside the crushing box 1 and below the screening plate 24, and the buffer pad 222 is arranged on the upper surface of the support plate 221.

[0026] By adopting the above technical solution, the support plate 221 can make the screening plate 24 more stable, and the buffer plate 222 can play a shock-absorbing role to reduce the impact damage to the screening plate 24.

[0027] Specifically, a guide plate 23 is provided at the upper end of the bottom plate of the crushing box 1 and below the screening plate 24. The guide plate 23 is provided with an inclined structure.

[0028] By adopting the above technical solution, the inclined guide plate 23 can prevent residue from appearing in the crushing box 1 .

[0029] When this embodiment is used, the raw materials for cement production are added into the crushing box 1 of the jaw crusher through the feed part 4, and the rotating structure 3 is started to make the two groups of crushing rollers 5 perform preliminary crushing. The crushed raw materials fall into between the first jaw plate 7 and the second jaw plate 8 through the guide plate 6. The driving structure 11 drives the second jaw plate 8 to move left and right, so that it performs secondary crushing on the raw materials, thereby completing multi-stage composite crushing. The screening plate 24 is fixed inside the mounting plate 21 and supported by the supporting structure 22. The screening plate 24 screens the crushed raw materials into three groups and then discharges them through the discharge port 25, which is convenient for the production of cement. The inclined guide plate 23 can avoid residues in the crushing box 1, the support plate 221 can make the screening plate 24 more stable, and the buffer pad 222 can play a shock-absorbing role to reduce the impact damage to the screening plate 24.

[0030] Example 2

[0031] The difference between this embodiment and the first embodiment is that the protection assembly 9 includes a mounting ring 92, a folding soft cover 93 and a smooth layer 94, wherein the surfaces of the crushing box 1 and the second jaw plate 8 are both provided with mounting rings 92, a folding soft cover 93 is provided between the two sets of mounting rings 92 and on the outside of the telescopic rod 10, and the outer surface of the folding soft cover 93 is provided with a smooth layer 94,

[0032] By adopting the above technical solution, the mounting ring 92 is fixed to the surface of the second jaw 8 and the crushing box 1, so that the folding soft cover 93 can protect the spring on the surface of the telescopic rod 10 to prevent it from being contaminated and damaged, and the smooth layer 94 facilitates the cleaning of the folding soft cover 93.

[0033] Specifically, a plurality of elastic rods 91 are provided on one side of the foldable soft cover 93 close to the telescopic rod 10, and the elastic rods 91 are provided with a telescopic structure.

[0034] By adopting the above technical solution, the telescopic elastic rod 91 can play an isolating and protective role when the folding soft cover 93 is telescoped, thereby preventing the soft cover from contacting the spring.

[0035] When this embodiment is used, the mounting ring 92 is fixed to the surface of the second jaw 8 and the crushing box 1, so that the foldable soft cover 93 can protect the spring on the surface of the telescopic rod 10 to prevent it from being contaminated and damaged. The smooth layer 94 facilitates the cleaning of the foldable soft cover 93. The telescopic elastic rod 91 can play an isolating and protective role when the foldable soft cover 93 is extended and retracted to prevent the soft cover from contacting the spring.

[0036] The structure and working principle of the rotating structure 3 composed of a first rotating shaft, a fixed plate, a motor and a gear and the driving structure 11 composed of a second rotating shaft, a cam, a first pulley, a second pulley, a belt and a give way groove in the utility model have been disclosed in a multi-stage compound jaw crusher disclosed in Chinese patent application No. 202220811342.1. The working principle of the rotating structure 3 is that the motor is started to make the motor shaft drive the gear to rotate, and the gear meshing drives another gear to rotate, so that the two sets of first rotating shafts drive the crushing roller 5 to rotate. The working principle of the driving structure 11 is that the first rotating shaft drives the first pulley to rotate, and the second pulley rotates through the belt flapping, so that the second rotating shaft drives the cam to rotate, and the second jaw plate 8 moves left and right.

[0037] Working principle and use process of the utility model: When the utility model is used, the raw materials for cement production are added into the crushing box 1 of the jaw crusher through the feeding part 4, the rotating structure 3 is started, and the two groups of crushing rollers 5 are initially crushed. The crushed raw materials fall between the first jaw plate 7 and the second jaw plate 8 through the guide plate 6, and the driving structure 11 drives the second jaw plate 8 to move left and right to perform secondary crushing on the raw materials, thereby completing multi-stage composite crushing. The screening plate 24 is fixed inside the mounting plate 21, and the supporting structure 22 supports it. The screening plate 24 screens the crushed raw materials into three groups, and then passes through the discharge port 2 5 discharge, convenient for cement production, the inclined guide plate 23 can avoid residue in the crushing box 1, the support plate 221 can make the screening plate 24 more stable, the buffer pad 222 can play a shock-absorbing role, reducing the impact damage to the screening plate 24; the mounting ring 92 is fixed on the second jaw plate 8 and the surface of the crushing box 1, so that the folding soft cover 93 can protect the spring on the surface of the telescopic rod 10 to avoid contamination and damage, the smooth layer 94 is convenient for cleaning the folding soft cover 93, and the telescopic elastic rod 91 can play an isolation and protection role when the folding soft cover 93 is extended and retracted to avoid contact between the soft cover and the spring.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage compound jaw crusher, comprising a crushing box, characterized in that: A feeding part is provided at the upper end of the crushing box, a crushing roller is provided at the upper end inside the crushing box, a rotating structure is provided on one side of the crushing roller, a guide plate is provided below the crushing roller, a first jaw plate is provided on one side below the guide plate, a second jaw plate is provided on the other side below the guide plate, a driving structure is provided on one side of the second jaw plate, a screening assembly is provided below the first jaw plate and the second jaw plate, a telescopic rod is provided between the second jaw plate and the crushing box, and a protective assembly is provided on the outside of the telescopic rod.

2. A multi-stage compound jaw crusher according to claim 1, characterized in that: The screening assembly includes a mounting plate, a supporting structure, a screening plate and a discharge port, wherein two groups of screening plates are arranged at the lower end of the crushing box, a mounting plate is arranged between one end of the screening plate and the crushing box, a discharge port is arranged at a position corresponding to the screening plate inside the crushing box, and a supporting structure is arranged at the bottom of the screening plate.

3. A multi-stage compound jaw crusher according to claim 2, characterized in that: The support structure comprises a support plate and a buffer pad, wherein the support plate is arranged inside the crushing box and below the screening plate, and the buffer pad is arranged on the upper surface of the support plate.

4. A multi-stage compound jaw crusher according to claim 2, characterized in that: A guide plate is arranged at the upper end of the bottom plate of the crushing box and below the screening plate, and the guide plate is arranged in an inclined structure.

5. The multi-stage compound jaw crusher according to claim 1, characterized in that: The protective assembly includes a mounting ring, a folding soft cover and a smooth layer, wherein mounting rings are provided on the surfaces of the crushing box and the second jaw plate, a folding soft cover is provided between the two groups of mounting rings and on the outside of the telescopic rod, and a smooth layer is provided on the outer surface of the folding soft cover.

6. A multi-stage compound jaw crusher according to claim 5, characterized in that: A plurality of elastic rods are arranged on one side of the foldable soft cover close to the telescopic rod, and the elastic rods are arranged in a telescopic structure.

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