Molding sand crushing device for precision casting
By using a multi-stage crushing and screening design of first-stage crushing roller, second-stage crushing roller and screen in the sand crushing device, combined with the open and closed inlet hopper and outlet hopper structure, the poor crushing effect and the The problem of dust emission achieves a more efficient crushing and a healthier working environment.
Patent Information
- Application Number
- CN202421152265.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The existing sand crushing device has poor crushing effect, and a large amount of dust will be generated during the crushing process, affecting the working environment and the health of the operators.
A precision casting sand crushing device including a primary crushing roller, a secondary crushing roller, a driving member and a screen is designed. Through multi-stage crushing and screening, the molding sand particles are ensured to be uniform, and combined with an open and closed inlet hopper and outlet hopper. Structure to reduce dust emission.
It improves the crushing effect, reduces the agglomeration residue of the molded sand, and significantly reduces the dissipation of dust, improving the working environment and the health of the operators.
Smart Images
Figure CN222288713U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of machinery and relates to a molding sand crushing device for precision casting. Background Art
[0002] In the field of mechanical casting, molding sand is often used for modeling and casting. In order to reduce production costs, the molding sand needs to be reused. However, during the casting process, the molding sand will inevitably form lumps. It is necessary to use a molding sand crushing device to break up the molding sand and then recycle it.
[0003] The existing molding sand crushing device usually crushes the sand once, and the crushed molding sand still contains a small amount of lumps, and the crushing effect is poor. In addition, the molding sand crushing device usually has an open structure. During the crushing process, a lot of dust will be generated, which is easy to affect the working environment and the health of the operators. Utility Model Content
[0004] The utility model aims to solve the above problems in the prior art and to provide a sand crushing device for precision casting which has good crushing effect and reduces dust emission.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] A molding sand crushing device for precision casting comprises a support frame and a crushing box, the crushing box is fixedly connected to the support frame, and is characterized in that it also comprises a primary crushing roller, a secondary crushing roller, a driving member and a screen, the top of the above-mentioned crushing box is provided with an inlet hopper, the inlet hopper is provided with an openable and closable cover body, the bottom of the crushing box is provided with a discharge hopper, and the discharge hopper is provided with a valve, the primary crushing roller is rotatably connected to the upper part of the crushing box, the number of the primary crushing rollers is several, and the several primary crushing rollers are arranged parallel to each other, the secondary crushing rollers are rotatably connected to the lower part of the crushing box, the number of the secondary crushing rollers is several, and the several secondary crushing rollers are arranged parallel to each other, the number of the driving members is several, the several driving members are all arranged outside the crushing box and the several driving members are respectively connected to the several primary crushing rollers and the several secondary crushing rollers in corresponding transmission, and the screen is arranged at the lower part of the crushing box and the screen is located below the secondary crushing roller.
[0007] The molding sand crushing device for precision casting facilitates the addition of molding sand to be crushed into the crushing box through the setting of the feed hopper, and flexibly controls the opening and closing of the feed hopper through the setting of the openable and closable cover body. The cover body is opened when adding materials, and is closed when crushing to prevent dust from being emitted from the feed hopper to the outside, so as to avoid affecting the working environment and the health of operators. The molding sand is crushed in multiple stages through the setting of the primary crushing roller and the secondary crushing roller. The driving member drives the primary crushing roller and the secondary crushing roller to rotate. The primary crushing firstly crushes the large pieces of molding sand, and the secondary crushing further crushes and refines the molding sand to ensure uniform molding sand particles, improve the crushing effect, and reduce agglomerate residues. The crushed molding sand is screened through the setting of the screen, and the molding sand that meets the particle requirements passes through the screen into the discharge hopper, and the molding sand that does not meet the requirements continues to be crushed at the secondary level, and then the discharge of the molding sand is flexibly controlled by controlling the opening and closing of the discharge hopper through the valve.
[0008] In the above-mentioned molding sand crushing device for precision casting, the cover body includes cover plate one and cover plate two, the inner end of cover plate one is hinged to the inner end of cover plate two, and the outer end of cover plate two is hinged to the hopper.
[0009] Such a structure enables the device to flexibly select the opening and closing status of the upper part of the feed hopper according to the usage situation when in use. When the feeding process is a one-time feeding, cover plate one and cover plate two can be opened at the same time to improve the feeding efficiency; after the feeding is completed, cover plate one and cover plate two are closed at the same time to prevent the dust generated in the crushing process from being emitted outward from the feed hopper; when the feeding process is continuous feeding, only cover plate one is opened, and the external continuous feeding device is docked at the opening of the feed hopper to ensure that the feeding process can be carried out smoothly and continuously, while most of the dust is blocked from being emitted outward from the feed hopper through cover plate two, reducing the impact on the working environment and personnel health.
[0010] In the above-mentioned molding sand crushing device for precision casting, the screen is a wave-shaped structure that matches the lower parts of several secondary crushing rollers.
[0011] The structure of the screen can better fit the secondary crushing roller. After being crushed by the secondary crushing roller, the molding sand with particles smaller than the screen aperture passes through the screen and enters the discharge hopper, and the molding sand with particles larger than the screen aperture is blocked on the upper layer of the screen and continues to be crushed by the secondary crushing roller, thereby improving the crushing effect and the quality of the molding sand.
[0012] In the above-mentioned molding sand crushing device for precision casting, crushing teeth are evenly distributed on the periphery of the primary crushing roller and the secondary crushing roller, and the size of the crushing teeth of the secondary crushing roller is smaller than the size of the crushing teeth of the primary crushing roller.
[0013] This structure enables the primary crushing roller to initially crush the large pieces of molding sand, and the secondary crushing roller to further crush and refine the initially crushed molding sand, ensuring uniform molding sand particles, improving the crushing effect, and reducing agglomerate residues.
[0014] In the above-mentioned molding sand crushing device for precision casting, the secondary crushing roller, the screen and the discharge hopper are arranged adjacent to each other in sequence from top to bottom.
[0015] Such a structure can ensure that after the molding sand is crushed by the secondary crushing roller, the molding sand with particles smaller than the screen aperture will pass through the screen directly into the discharge hopper, and the molding sand with particles larger than the screen aperture will be blocked on the upper layer of the screen and continue to be crushed by the secondary crushing roller until it can pass through the screen.
[0016] In the above-mentioned molding sand crushing device for precision casting, the driving member is a motor, and the motor is fixedly connected to the outside of the crushing box through a mounting seat.
[0017] The motor is fixedly connected to the outside of the crushing box through the mounting base to ensure the stable connection of the motor, thereby ensuring that the motor can stably provide power for the rotation and crushing work of the primary crushing roller and the secondary crushing roller.
[0018] In the above-mentioned molding sand crushing device for precision casting, the feed hopper is centrally arranged on the top of the crushing box and the two are welded and fixedly connected.
[0019] The feed hopper is centrally arranged so that the molding sand added into the crushing box from the feed hopper can be fully crushed by the primary crushing roller, and the welding connection between the feed hopper and the crushing box ensures the connection stability between the two.
[0020] In the above-mentioned molding sand crushing device for precision casting, the upper part of the discharge hopper matches the crushing box and the two are welded and fixedly connected.
[0021] The upper part of the discharge hopper is matched with the crushing box so that the molding sand after screening by the screen can enter the discharge hopper, and the welding connection between the discharge hopper and the crushing box ensures the connection stability between the two.
[0022] In the above-mentioned molding sand crushing device for precision casting, the lower diameter of the discharge hopper is smaller than the upper diameter, and the valve is arranged at the lower part of the discharge hopper.
[0023] The lower diameter of the discharge hopper is smaller than the upper diameter, which is convenient for centralized discharge of crushed molding sand, and also convenient for external storage or transfer equipment to collect, store and transfer the molding sand output from the discharge port. The valve can flexibly control the opening and closing of the lower part of the discharge hopper to control the discharge work.
[0024] In the above-mentioned molding sand crushing device for precision casting, the upper diameter of the feed hopper is larger than the lower diameter.
[0025] Such a structure is more conducive to adding the molding sand to be crushed into the crushing box.
[0026] Compared with the prior art, the present precision casting molding sand crushing device realizes multi-stage crushing of molding sand through the primary crushing roller and the secondary crushing roller, thereby improving the crushing effect and reducing the residual lumps, and the screening effect of the screen allows the molding sand that has not been completely crushed to stay on the upper layer of the screen for continued crushing, thereby further improving the crushing effect and the quality of the molding sand; the setting of the feed hopper and the discharge hopper facilitates the feeding and discharging of materials, and the opening and closing of the feed hopper can be flexibly adjusted through the setting of the cover body, thereby reducing the emission of dust, thereby reducing the impact on the working environment and personnel health. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic diagram of the cross-sectional structure of the molding sand crushing device for precision casting;
[0028] Figure 2 yes Figure 1 Schematic diagram of the left-side sectional structure.
[0029] In the figure, 1. support frame; 2. secondary crushing roller; 3. primary crushing roller; 4. feed hopper; 5. cover plate 1; 6. cover plate 2; 7. crushing box; 8. screen; 9. discharge hopper; 10. valve; 11. motor; 12. mounting base. DETAILED DESCRIPTION
[0030] 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 of 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.
[0031] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.
[0033] like Figure 1As shown in FIG. 2 , the molding sand crushing device for precision casting includes a support frame 1 and a crushing box 7, the crushing box 7 is fixedly connected to the support frame 1, and also includes a primary crushing roller 3, a secondary crushing roller, a driving member and a screen 8. The top of the crushing box 7 is provided with a feed hopper 4, and the feed hopper 4 is provided with an openable and closable cover body, the bottom of the crushing box 7 is provided with a discharge hopper 9, and the discharge hopper 9 is provided with a valve 10, the primary crushing roller 3 is rotatably connected to the upper part of the crushing box 7, the number of the primary crushing rollers 3 is several, and the several primary crushing rollers 3 are arranged parallel to each other, the secondary crushing roller 2 is rotatably connected to the lower part of the crushing box 7, the number of the secondary crushing rollers 2 is several, and the several secondary crushing rollers 2 are arranged parallel to each other, the number of the driving members is several, and the several driving members are all arranged outside the crushing box 7 and the several driving members are respectively connected to the several primary crushing rollers 3 and the several secondary crushing rollers 2 in a corresponding transmission manner, and the screen 8 is arranged at the lower part of the crushing box 7 and the screen 8 is located below the secondary crushing roller 2.
[0034] The cover body includes a cover plate 1 5 and a cover plate 2 6 , the inner end of the cover plate 1 5 is hinged to the inner end of the cover plate 2 6 , and the outer end of the cover plate 2 6 is hinged to the hopper 4 .
[0035] The screen 8 is a wave-shaped structure that matches the lower parts of the secondary crushing rollers 2 .
[0036] Crushing teeth are evenly distributed on the peripheries of the primary crushing roller 3 and the secondary crushing roller 2 , and the size of the crushing teeth of the secondary crushing roller 2 is smaller than the size of the crushing teeth of the primary crushing roller 3 .
[0037] The secondary crushing roller 2, the screen 8 and the discharge hopper 9 are arranged adjacent to each other in sequence from top to bottom.
[0038] The driving member is a motor 11 , and the motor 11 is fixedly connected to the outside of the crushing box 7 through a mounting seat 12 .
[0039] The feeding hopper 4 is centrally arranged on the top of the crushing box 7 and the two are welded and fixedly connected.
[0040] The upper part of the discharge hopper 9 matches with the crushing box 7 and the two are welded and fixedly connected.
[0041] The lower diameter of the discharge hopper 9 is smaller than the upper diameter, and the valve 10 is arranged at the lower part of the discharge hopper 9 .
[0042] The upper diameter of the feeding hopper 4 is larger than the lower diameter.
[0043] The molding sand crushing device for precision casting is convenient for adding the molding sand to be crushed into the crushing box 7 through the setting of the feed hopper 4, and the opening and closing of the feed hopper 4 can be flexibly controlled by the setting of the openable and closable cover body. The cover body is opened when adding materials, and the cover body is closed when crushing to prevent dust from being emitted from the feed hopper 4 to the outside, so as to avoid affecting the working environment and the health of operators. The molding sand is crushed in multiple stages by the setting of the primary crushing roller 3 and the secondary crushing roller 2. The driving member drives the primary crushing roller 3 and the secondary crushing roller 2 to rotate. The primary crushing firstly crushes the large pieces of molding sand, and the secondary crushing further crushes and refines the molding sand to ensure that the molding sand particles are uniform, improve the crushing effect, and reduce the agglomeration residue. The crushed molding sand is screened by the setting of the screen 8. The molding sand that meets the particle requirements passes through the screen 8 and enters the discharge hopper 9. The molding sand that does not meet the requirements continues to be crushed at the secondary level, and then the discharge of the molding sand is flexibly controlled by controlling the opening and closing of the discharge hopper 9 through the valve 10.
[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0045] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.
Claims
1. A sand crushing device for precision casting, comprising a support frame and a crushing box, wherein the crushing box is fixedly connected to the support frame, characterized in that: It also includes a primary crushing roller, a secondary crushing roller, a driving member and a screen. A feed hopper is provided on the top of the above-mentioned crushing box, and an openable and closable cover is provided on the feed hopper. A discharge hopper is provided at the bottom of the crushing box, and a valve is provided on the discharge hopper. The primary crushing roller is rotatably connected to the upper part of the crushing box. The number of the primary crushing rollers is several, and the primary crushing rollers are arranged parallel to each other. The secondary crushing roller is rotatably connected to the lower part of the crushing box. The number of the secondary crushing rollers is several, and the secondary crushing rollers are arranged parallel to each other. The number of the driving members is several, and the driving members are all arranged outside the crushing box and the driving members are respectively connected to the primary crushing rollers and the secondary crushing rollers in a corresponding transmission manner. The screen is arranged at the lower part of the crushing box and the screen is located below the secondary crushing roller.
2. The sand crushing device for precision casting according to claim 1, characterized in that: The cover body comprises a cover plate 1 and a cover plate 2, wherein the inner end of the cover plate 1 is hinged to the inner end of the cover plate 2, and the outer end of the cover plate 2 is hinged to the hopper.
3. The sand crushing device for precision casting according to claim 2, characterized in that: The screen is a wave-shaped structure matched with the lower parts of a plurality of secondary crushing rollers.
4. The sand crushing device for precision casting according to claim 3, characterized in that: Crushing teeth are evenly distributed on the outer peripheries of the primary crushing roller and the secondary crushing roller, and the size of the crushing teeth of the secondary crushing roller is smaller than the size of the crushing teeth of the primary crushing roller.
5. The sand crushing device for precision casting according to claim 4, characterized in that: The secondary crushing roller, the screen and the discharging hopper are arranged adjacent to each other in sequence from top to bottom.
6. The sand crushing device for precision casting according to claim 5, characterized in that: The driving member is a motor, and the motor is fixedly connected to the outside of the crushing box through a mounting seat.
7. The sand crushing device for precision casting according to claim 6, characterized in that: The feeding hopper is centrally arranged on the top of the crushing box and the two are fixedly connected by welding.
8. The sand crushing device for precision casting according to claim 7, characterized in that: The upper part of the discharging hopper matches with the crushing box and the two are fixedly connected by welding.
9. The sand crushing device for precision casting according to claim 8, characterized in that: The lower diameter of the discharge hopper is smaller than the upper diameter, and the valve is arranged at the lower part of the discharge hopper.
10. The sand crushing device for precision casting according to claim 9, characterized in that: The upper diameter of the feeding hopper is larger than the lower diameter.