Efficient energy-saving type two-stage jaw crusher

Abstract

The utility model relates to the field of crushing equipment, in particular to an efficient energy-saving type two-stage jaw crusher which comprises a screening feeding device, a first-stage crushing device and a second-stage crushing device which are continuously communicated from top to bottom, the screening feeding device comprises a shell, a first discharging opening communicated with the first-stage crushing device is formed in the lower portion of the shell, and a second discharging opening communicated with the second-stage crushing device is formed in the lower portion of the shell. A screening roller is rotationally connected into the shell, a first gap allowing fine crushing materials to pass through is kept between the screening roller and the side wall, away from the first discharging port, in the shell, and a second gap allowing to-be-crushed materials to pass through is kept between the screening roller and the side wall, close to the first discharging port, in the shell. A feeding opening is formed in the position, above the first gap, of the shell, and the screening roller rotates in the direction of the second gap; and a collecting box is arranged below the first gap. The screening and feeding device is arranged, so that the technical problem that the energy consumption of equipment is increased due to the fact that large and small materials are extruded together to be excessively crushed together when the large and small materials are fed into the crusher without difference is solved.

Description

Technical Field

[0001] This utility model patent relates to the field of crushing equipment, specifically a high-efficiency and energy-saving two-stage jaw crusher. Background Art

[0002] Jaw crusher, also known as jaw crusher, consists of two jaw plates, a moving jaw and a static jaw, to form a crushing chamber. It simulates the movement of the two jaws of an animal to complete the material crushing operation. It is mainly used as a coarse crusher and a medium crusher. It has a large crushing ratio, uniform product particle size, simple equipment structure, reliable operation and low operating costs. It is a commonly used crushing device in industry.

[0003] Most of the current jaw crushers are single-stage crushing machines and can only control the particle size within a single range. When faced with larger materials, it takes a long time to crush the materials to smaller particle sizes at one time. In order to solve the above problems, the existing solutions are usually to set up a continuous multi-stage crushing mechanism. For example, the Chinese patent "A Molding Sand Crusher" (patent number ZL201320362983.4, published on 20131113) records the following structure: A molding sand crusher, including a frame, a feeding part, a crushing part and a discharging part. The crushing part includes a jaw extrusion plate and a fixed liner used in conjunction with the jaw extrusion plate. The molding sand crusher also includes a secondary crushing part. The secondary crushing part includes a crushing drum located below the jaw extrusion plate. The crushing drum is provided with outwardly protruding convex teeth. A curled extrusion guard plate is installed on the outside of the crushing drum, and sand leakage holes are processed on the curled extrusion guard plate.

[0004] The multi-stage pulverizing crusher with screening function described in the prior art has an additional crushing mechanism designed below the jaw crusher. It first breaks down large pieces of material, and then uses a secondary crushing device to finely crush them, performing continuous crushing and improving the crushing efficiency per unit time. This solves the problem that the existing single-stage jaw crusher takes a long time to crush large materials into smaller particle sizes at one time. However, this crusher still has the following defects during use: the materials often include large pieces of uncrushed material and some fine materials that meet the requirements after crushing. Large and small materials are fed into the crusher indiscriminately, and the large and small materials are squeezed together and crushed together, resulting in excessive crushing of the fine materials during the mixed crushing process. At the same time, the crushing burden of each crusher is increased, and energy consumption is increased. Utility Model Content

[0005] The utility model is intended to provide a high-efficiency and energy-saving two-stage jaw crusher, which is mainly used to solve the technical problems existing in the prior art that large and small materials are put into the crusher indiscriminately, the large and small materials are squeezed together and over-crushed, which increases the crushing burden of each stage of the crusher and increases the energy consumption of the equipment.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A high-efficiency and energy-saving two-stage jaw crusher includes a screening feeding device, a primary crushing device, and a secondary crushing device which are continuously connected from top to bottom. The screening feeding device includes a shell, a first discharge port connected to the primary crushing device is provided below the shell, a screening roller is rotatably connected inside the shell, the screening roller and the side wall of the shell away from the first discharge port maintain a first gap for finely crushed materials to pass through, and the screening roller and the side wall of the shell close to the first discharge port maintain a second gap for materials to be crushed to pass through; the shell is provided with a feeding port above the first gap, and the screening roller rotates toward the direction of the second gap; a collection box for collecting finely crushed materials is provided below the first gap.

[0008] Beneficial effects of this program:

[0009] When the material falls from the feed port to the first gap, the small pieces of material that meet the particle size after crushing fall from the feed port into the collection box, while the large pieces of material are transmitted to the second gap as the screening roller rotates, and fall along the second gap into the first-level crushing device for crushing. After the initial crushing by the first-level crushing device, the material enters the second-level crushing device for more refined crushing processing, and is finally discharged from the second-level crusher. The material entering the collection box can enter the next process together with the material discharged from the second-level crushing device. Compared with the existing technology, the high-efficiency and energy-saving two-stage jaw crusher in this scheme will first screen out the fine materials that meet the particle size requirements, and only crush the larger materials to be crushed through the two-stage crushing device. The whole process is carried out continuously, and the crushing amount per unit time is increased. After the preliminary screening by the screening and feeding device, the workload of each crushing device is reduced, energy consumption is reduced, work efficiency is improved, and excessive crushing of fine materials can be avoided. In summary, this scheme solves the technical problems of the existing technology that large and small materials are put into the crusher indiscriminately, and large and small materials are squeezed together and over-crushed together, which increases the crushing burden of each stage crusher and increases the energy consumption of the equipment.

[0010] Preferably, the feed port is located lower than the top surface of the shell, and the top surface of the shell is tilted from all sides toward the feed port. In this solution, when the material is poured into the shell, the material can slide toward the feed port along the tilted top surface of the shell.

[0011] Preferably, a plurality of baffles are evenly distributed around the circumference of the screening roller, with their lengths perpendicular to and intersecting the axis of the screening roller. The spacing between adjacent baffles arranged along the axis of the screening roller is consistent with the particle size of the finely crushed material. In this embodiment, when a large piece of material with a particle size larger than that of the finely crushed material falls into the first gap, the baffles rotate upward from bottom to top, flipping the large piece of material into the second gap, where it falls into the primary crushing device for crushing.

[0012] Preferably, the collection box has four sides, three of which are fixed to the inner wall of the housing, and one of which is located below the screening roller and the blocking rod on the screening roller. In this solution, the collection box is precisely located below the first gap, so that the finely crushed materials can fall accurately into the collection box and be collected.

[0013] Preferably, the bottom of the collection box is inclined, and a second discharge port is provided on a side surface of the collection box near the lower end of the bottom. A third discharge port is provided on a side surface of the housing that overlaps with the second discharge port. A discharge pipe is provided on the outside of the housing at the third discharge port. In this embodiment, when material falls into the collection box, it flows along the inclined bottom, through the second and third discharge ports, and into the discharge pipe for discharge.

[0014] Preferably, the top of the housing is provided with a plurality of nozzles capable of spraying water mist; the bottom of the secondary crushing device is provided with a fourth discharge port, and the outer bottom of the secondary crushing device is also provided with a plurality of nozzles capable of spraying water mist. In this solution, the water mist can absorb dust and drop it together. The purpose of providing the nozzles is to ensure that both the feeding and discharging of the high-efficiency and energy-saving two-stage jaw crusher in this solution are dust-reduced; at the same time, the water mist effectively combines with the generated dust, and no excess water overflows, thereby eliminating the generation of wastewater.

[0015] Preferably, the primary crushing device is a primary jaw crusher, and the secondary crushing device is a secondary jaw crusher, wherein the crushing particle size of the primary jaw crusher is larger than that of the secondary jaw crusher. In this solution, the two-stage jaw crushers are stacked, and the stone enters the feed port of the screening feed device by gravity. After screening by the screening roller, the large pieces of material to be crushed enter the primary jaw crusher for preliminary crushing and disassembly, and then enter the secondary jaw crusher for crushing into fine material, which is discharged from the fourth discharge port. The entire process is carried out continuously, the crushing amount per unit time is increased, and after the preliminary screening by the screening feed device, the workload of each crushing device is reduced, reducing energy consumption and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the three-dimensional structure of a high-efficiency and energy-saving double-stage jaw crusher patented by this utility model Figure 1 ;

[0017] Figure 2 This is the three-dimensional structure of a high-efficiency and energy-saving double-stage jaw crusher patented by this utility model Figure 2 ;

[0018] Figure 3 This is the three-dimensional structure of a high-efficiency and energy-saving double-stage jaw crusher patented by this utility model Figure 3 ;

[0019] Figure 4 This is the three-dimensional structure of a high-efficiency and energy-saving double-stage jaw crusher patented by this utility model Figure 4 ;

[0020] Figure 5 This is a three-dimensional structural diagram of the screening roller of a high-efficiency and energy-saving double-stage jaw crusher of this utility model patent;

[0021] Figure 6 This is a top view of a high-efficiency and energy-saving two-stage jaw crusher according to the utility model patent;

[0022] Figure 7 This utility model patent is a high-efficiency and energy-saving double-stage jaw crusher Figure 6 AA cross-section of

[0023] Figure 8 This is a half-section diagram of a high-efficiency and energy-saving two-stage jaw crusher according to this utility model patent.

[0024] The figure marks in the drawings of the specification include: screening feeding device 1, nozzle 11, feed port 12, first discharge port 121, screening roller 13, baffle 131, roller 132, mounting plate 14, motor 141, belt 15, collecting box 16, collecting box bottom 161, discharge pipe 17, third discharge port 171, first gap 18, second gap 19, first jaw crusher 2, second jaw crusher 3, fourth discharge port 31. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1 、 Figure 2 、 Figure 3 As shown, a high-efficiency and energy-saving two-stage jaw crusher includes a screening feeding device 1, a primary jaw crusher 2, and a secondary jaw crusher 3 which are continuously connected from top to bottom. After the material is screened by the screening feeding device 1, the large pieces of material to be crushed enter the primary and secondary jaw crushers 3 and are gradually crushed into qualified fine materials.

[0027] like Figure 5 、 Figure 6 、 Figure 7As shown, the screening feeding device 1 includes a shell, a first discharge port 121 connected to the first-stage jaw crusher 2 is opened at the bottom of the shell, and a screening roller 13 is rotatably connected inside the shell. Specifically, a rotating shaft is fixed through the center of the screening roller 13, and both ends of the rotating shaft pass through the shell and are rotatably connected to the shell. A roller 132 is fixed at one end of the rotating shaft, and a mounting plate 14 is fixed to the outside of the shell. A motor 141 is installed on the mounting plate 14. The motor 141 and the outer periphery of the roller are jointly provided with a belt 15. The motor 14 The output shaft rotates through the belt 15 to drive the roller 132 to rotate, thereby driving the screening roller 13 to rotate; a number of baffles 131 are evenly distributed around the circumference of the screening roller 13, and the length direction of the baffles 131 is perpendicular to and intersects with the axis of the screening roller 13. Among the baffles 131 arranged along the axis of the screening roller 13, the spacing between adjacent baffles 131 is consistent with the particle size of the finely crushed material. The baffles 131 maintain a distance from the inner wall of the housing to prevent the baffles 131 from interfering with the housing during the rotation of the screening roller 13;

[0028] The screening roller 13 and the side wall of the shell away from the first discharge port 121 maintain a first gap 18 for the passage of finely crushed materials. The width of the first gap 18 is consistent with the particle size of the finely crushed materials. The screening roller 13 and the side wall of the shell close to the first discharge port maintain a second gap 19 for the passage of the material to be crushed. The shell is provided with a feed port 12 above the first gap 18, and the screening roller 13 rotates toward the second gap 19. A collecting box 16 for collecting finely crushed materials is provided below the first gap 18.

[0029] When the material falls from the feed port 12 to the first gap 18, small pieces of material that meet the particle size after crushing fall from the feed port 12 into the collecting box 16, and large pieces of material with a particle size larger than that of the finely crushed material fall onto the first gap 18, the blocking rod 131 rotates from bottom to top, flipping the large pieces of material over and pushing them into the second gap 19, and falling along the second gap 19 into the first-level crushing device for crushing. After the primary crushing by the first-level jaw crusher 2, the material enters the second-level jaw crusher 3 for more refined crushing processing, and is finally discharged from the second-level jaw crusher 3. The material entering the collecting box 16 can enter the next process together with the material discharged from the second-level jaw crusher 3.

[0030] like Figure 2 、 Figure 7 、 Figure 8As shown, the collecting box 16 has four sides, and three of the sides are fixed to the inner wall of the shell, one of the sides is located below the screening roller 13 and the blocking rod 131 on the screening roller 13, and the collecting box 16 is precisely located below the first gap 18, so that the finely crushed materials can accurately fall into the collecting box 16 and be collected; the bottom 161 of the collecting box is tilted, and a second discharge port is provided on the side of the collecting box 16 at one end near the lower position of the bottom 161 of the collecting box, and a third discharge port 171 (as shown in FIG. 1 ) is provided on the side of the shell and overlaps with the second discharge port. Figure 2 As shown), a discharge pipe 17 is provided on the outside of the shell at the third discharge port 171. When the material falls into the collection box 16, it enters the discharge pipe 17 along the inclined bottom 161 of the collection box and is discharged from the second discharge port and the third discharge port 171.

[0031] like Figure 4 As shown, a plurality of nozzles 11 capable of spraying water mist are provided on the top of the shell; a fourth discharge port 31 is provided at the bottom of the secondary jaw crusher 3, and a plurality of nozzles 11 capable of spraying water mist are also provided at the outer bottom of the secondary jaw crusher 3. The water mist can absorb dust and fall together. The purpose of providing the nozzles 11 is to ensure that the feeding and discharging of the high-efficiency and energy-saving two-stage jaw crusher in this scheme are both dust-reduced.

[0032] This solution works as follows:

[0033] When the material falls from the feed port 12 to the first gap 18, small pieces of material that meet the particle size after crushing fall from the feed port 12 into the collecting box 16, while large pieces of material are transmitted to the second gap 19 as the screening roller 13 rotates, and fall along the second gap 19 into the first-stage jaw crusher 2 for crushing. After the initial crushing by the first-stage jaw crusher 2, the material enters the second-stage jaw crusher 3 for more refined crushing processing, and is finally discharged from the second-stage jaw crusher 3; and the material entering the collecting box 16 can be discharged along the discharge pipe 17 and enter the next process together with the material discharged from the second-stage jaw crusher 3.

[0034] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A high-efficiency and energy-saving two-stage jaw crusher, characterized by: The invention comprises a screening feeding device, a primary crushing device and a secondary crushing device which are connected in series from top to bottom, wherein the screening feeding device comprises a shell, a first discharge port connected to the primary crushing device is provided at the bottom of the shell, a screening roller is rotatably connected inside the shell, a first gap is maintained between the screening roller and the side wall of the shell away from the first discharge port so as to allow the finely crushed material to pass through, and a second gap is maintained between the screening roller and the side wall of the shell close to the first discharge port so as to allow the material to be crushed to pass through; a feeding port is provided on the shell above the first gap, and the screening roller rotates toward the direction of the second gap; a collecting box for collecting the finely crushed material is provided below the first gap.

2. The high-efficiency and energy-saving two-stage jaw crusher according to claim 1, characterized in that: The feed port is located lower than the top surface of the shell, and the top surface of the shell is inclined from all sides toward the feed port.

3. The high-efficiency and energy-saving two-stage jaw crusher according to claim 2, characterized in that: A plurality of baffles are evenly distributed on the circumference of the screening roller. The length direction of the baffles is perpendicular to and intersects with the axis of the screening roller. Among the baffles arranged along the axis of the screening roller, the spacing between adjacent baffles is consistent with the particle size of the finely crushed material.

4. The high-efficiency and energy-saving two-stage jaw crusher according to claim 3, characterized in that: The collecting box has four side surfaces, and three side surfaces are fixed to the inner wall of the shell, and one side surface is located below the screening roller and the blocking rod on the screening roller.

5. The high-efficiency and energy-saving two-stage jaw crusher according to claim 4, characterized in that: The bottom of the collecting box is tilted, and a second discharge port is provided on the side of the collecting box near the lower end of the bottom, a third discharge port overlapping with the second discharge port is provided on the side of the shell, and a discharge pipe is provided on the outside of the shell at the third discharge port.

6. The high-efficiency and energy-saving two-stage jaw crusher according to claim 5, characterized in that: The top of the shell is provided with a plurality of nozzles capable of spraying water mist; the bottom of the secondary crushing device is provided with a fourth discharge port, and the outer bottom of the secondary crushing device is also provided with a plurality of nozzles capable of spraying water mist.

7. The high-efficiency and energy-saving two-stage jaw crusher according to claim 6, characterized in that: The primary crushing device is a primary jaw crusher, and the secondary crushing device is a secondary jaw crusher. The crushing particle size of the primary jaw crusher is larger than that of the secondary jaw crusher.

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