Crusher with screening function
By designing the screening mechanism and screen holes in the hammer crusher for coarse and fine separation, the problems of fine powder blockage and wear are solved, and a more efficient crushing and a cleaner working environment is achieved.
Patent Information
- Application Number
- CN202422541826.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-10-21
AI Technical Summary
Existing hammer crushers cannot separate the limestone in a coarse and fine manner, resulting in fine powdered limestone easily clogging the gaps in the screen plate, causing hammer head wear, reduced yield, accelerated hammer disk wear and raw material splash problems.
A crusher with screening function is designed, including a screening mechanism at the feed port, and a motor drives the twisting dragon to rotate, push large-grain limestone into the screening cylinder, and passes through the second and first screen holes. The coarse and fine separation, and the fine powder falls into the collection box to prevent clogging and wear and reduce splashing.
It realizes the separation of the coarse and fine materials, prevents the blockage of fine powder, slows down the wear of the hammer disk, keeps the on-site and environment sanitary and tidy, and improves the crushing efficiency and equipment life.
Smart Images
Figure CN222197292U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crushers, in particular to a crusher with a screening function. Background Art
[0002] Limestone is needed in the cement production process. Usually, limestone has a large particle size and needs to be crushed before use. Hammer crushers are generally used for crushing. However, the existing hammer crushers have the inconvenience that the materials cannot be separated into coarse and fine particles before crushing. This causes some finely powdered limestone to enter the hammer crusher together with large-particle limestone during crushing. When it is in the rainy season or the water content of the limestone is high, the finely powdered limestone is very easy to block the gaps in the screen plate, resulting in material accumulation on the screen plate. This will not only cause severe wear on the hammer head, but also significantly reduce the output. At the same time, due to the scouring of the rotor by the fine powder, the hammer disc wears faster, and in severe cases it may even cause the shell to deform, making it difficult to achieve sealing. In addition, the splashing problem of limestone raw materials is serious, making it difficult to keep the site and environmental hygiene clean and tidy, and maintenance work such as replacing the liner is also more frequent. Utility Model Content
[0003] The utility model aims to provide a crusher with a screening function, which is used to solve the problem mentioned in the above background technology that the existing hammer crusher is inconvenient to separate the coarse and fine materials.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crusher with screening function, comprising a crusher body, a screening mechanism arranged at the feed port of the crusher body, the screening mechanism comprising a screening cylinder formed by extending outward from the feed port, a conveying assembly arranged in the screening cylinder, and a feed screening assembly arranged at the bottom of the feed port; the feed screening assembly comprises a first discharge hopper arranged at the inclined feed guide plate of the feed port and a discharge pipe connected to the first discharge hopper, and a first sieve hole is opened on the inclined feed guide plate.
[0005] Furthermore, the conveying assembly includes a motor disposed at the end of the screening drum and an auger disposed in the screening drum and connected to an output shaft of the motor.
[0006] Furthermore, a second feed hopper is provided on the upper part of the screening cylinder, and a second screening hole is opened at the bottom of the screening cylinder, and the aperture of the second screening hole is the same as that of the first screening hole.
[0007] Furthermore, a support plate parallel to the bottom of the crusher body is provided at the bottom of the screening drum.
[0008] Furthermore, a placement plate is connected between the support plate and the bottom of the crusher body, a collecting box is provided on the placement plate, and the second sieve hole and the discharge pipe are located above the collecting box.
[0009] Furthermore, the crusher body is specifically a hammer crusher.
[0010] Furthermore, the auger is specifically a shaftless auger.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] The utility model is used for separating coarse and fine materials when crushing limestone; the motor drives the auger to rotate, and the large-sized limestone mixed with fine powder limestone is pushed to the end of the screening cylinder close to the feed port; during the pushing process, the fine powder limestone falls from the second sieve hole into the collecting box below; when the limestone moves to the inclined feed guide plate of the feed port, the limestone continues to slide down under the action of gravity, and some fine powder limestone that has not been screened out falls from the first sieve hole and enters the collecting box through the discharge pipe; the device separates the coarse and fine materials by arranging the second sieve hole and the first sieve hole, and prevents the fine powder from clogging the gap of the sieve plate, causing the hammer head to wear, thereby reducing the output; and with the reduction of fine powder entering the crushing chamber, the scouring of the rotor can be reduced, the wear speed of the hammer disc can be slowed down, and the splashing problem of limestone raw materials can also be alleviated, so as to keep the site and the environment clean and tidy. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is the overall structure diagram of the utility model;
[0014] Figure 2 It is a cross-sectional view of the utility model.
[0015] In the figure:
[0016] 1. Crusher body; 2. Feed inlet; 3. Screening cylinder; 4. Conveying assembly; 5. Feed screening assembly; 6. Second feed hopper; 7. Second sieve hole; 8. Motor; 9. Auger; 10. First discharge hopper; 11. Discharge pipe; 12. First sieve hole; 13. Support plate; 14. Placement plate; 15. Collection box. DETAILED DESCRIPTION
[0017] See also Figure 1 to Figure 2 A crusher with screening function is composed of a crusher body 1 and a screening mechanism arranged at a feed port 2 of the crusher body 1 for coarse and fine separation of materials. The above-mentioned crusher body 1 is specifically a hammer crusher, and the screening mechanism includes a screening drum 3, a conveying assembly 4 and a feed screening assembly 5; the screening drum 3 is formed by extending outward from the feed port 2, and is used to screen the limestone when it is conveyed, and a vertical second feed hopper 6 is connected to the upper part of the screening drum 3, and a second sieve hole 7 is opened at the bottom of the screening drum 3, so that the limestone enters the screening drum 3 through the second feed hopper 6, and the fine powder is screened out through the second sieve hole 7 to achieve coarse and fine separation.
[0018] The conveying assembly 4 consists of a motor 8 arranged at the end of the screening drum 3 and an auger 9 arranged in the screening drum 3 and connected to the output shaft of the motor 8. The motor 8 drives the auger 9 to rotate so as to convey the limestone. The auger 9 is set as a shaftless auger to reduce material blockage and discharge port blockage.
[0019] The feed screening assembly 5 is arranged at the inclined feed guide plate of the feed port 2 and is located at the bottom of the feed port 2. When the limestone slides down along the inclined feed guide plate under the action of gravity, the fine powder falls into the first discharge hopper 10 arranged at the bottom of the feed guide plate through the first sieve hole 12 opened on the feed guide plate, and then is discharged through the discharge pipe 11 connected to the first discharge hopper 10. It is used to screen the fine powder missed by the screening drum 3. In order to facilitate the control of the particle size of the screened fine powder, the second sieve hole 7 and the first sieve hole 12 are set to the same aperture.
[0020] In order to facilitate the collection of the sieved fine powder, a support plate 13 parallel to the bottom of the crusher body 1 is provided at the bottom of the screening drum 3, and a placement plate 14 is connected between the support plate 13 and the bottom of the crusher body 1, and then a collecting box 15 is provided on the placement plate 14, and the second sieve hole 7 and the discharge pipe 11 are both located above the collecting box 15, and the fine powder sieved from the second sieve hole 7 and the discharge pipe 11 all fall into the collecting box 15 below, so that the staff can process it later.
[0021] The working principle of the utility model is as follows: when crushing limestone, the motor 8 is started, and the motor 8 drives the auger 9 to rotate, and then the limestone is put into the screening cylinder 3 through the second feed hopper 6. Under the action of the auger 9, the limestone is pushed along the length direction of the screening cylinder 3. During the movement of the limestone, some fine powder mixed in it falls from the second sieve hole 7 into the collecting box 15 below. When the limestone is pushed to the place where the inclined feed guide plate is provided at the feed port 2, it continues to slide down under the action of gravity and enters the crushing chamber of the hammer crusher. When entering, some unscreened fine powder falls into the first discharge hopper 10 through the first sieve hole 12, and is then transported to the collecting box 15 by the discharge pipe 11.
Claims
1. A crusher with a screening function, comprising a crusher body (1), a screening mechanism provided at a feed inlet (2) of the crusher body (1), characterized in that: The screening mechanism comprises a screening cylinder (3) formed by extending outward from a feed port (2), a conveying assembly (4) arranged in the screening cylinder (3), and a feed screening assembly (5) arranged at the bottom of the feed port (2); the feed screening assembly (5) comprises a first discharge hopper (10) arranged at an inclined feed guide plate of the feed port (2) and a discharge pipe (11) connected to the first discharge hopper (10), and the inclined feed guide plate is provided with a first screen hole (12).
2. A crusher with screening function as claimed in claim 1, characterized in that: The conveying assembly (4) comprises a motor (8) disposed at the end of the screening drum (3) and an auger (9) disposed in the screening drum (3) and connected to the output shaft of the motor (8).
3. A crusher with screening function as claimed in claim 2, characterized in that: A second feed hopper (6) is provided on the upper portion of the screening cylinder (3), and a second screening hole (7) is provided on the bottom portion of the screening cylinder (3); the second screening hole (7) and the first screening hole (12) have the same aperture.
4. A crusher with screening function as claimed in claim 3, characterized in that: The bottom of the screening cylinder (3) is provided with a support plate (13) that is flush with the bottom of the crusher body (1).
5. A crusher with screening function as claimed in claim 4, characterized in that: A placement plate (14) is connected between the support plate (13) and the bottom of the crusher body (1), a collection box (15) is provided on the placement plate (14), and the second sieve hole (7) and the discharge pipe (11) are located above the collection box (15).
6. A crusher with screening function as claimed in claim 3, characterized in that: The crusher body (1) is specifically a hammer crusher.
7. A crusher with screening function as claimed in claim 2, characterized in that: The auger (9) is specifically a shaftless auger.