Sand mixing device with cleaning function
By introducing a compressed gas cleaning mechanism into the sand mixing device, the problem of difficulty in cleaning the residue in the sand mixing device is solved, automatic cleaning is realized, manual investment and manufacturing costs are reduced, and the quality of sand mixing is ensured.
Patent Information
- Application Number
- CN202421837634.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-31
AI Technical Summary
During the use of the existing sand mixing device, after the dry sand and resin are mixed, the residue is difficult to clean, resulting in changes in the structure and appearance of the sand mixing cylinder and sand mixing blades, affecting the quality of the sand mixing, and increasing the investment and manufacturing cost of manual cleaning.
A sand mixing device with cleaning function is designed, including a sand mixing mechanism and a cleaning mechanism. The sand mixing mechanism includes a sand mixing cylinder and a rotatable sand mixing blade. The cleaning mechanism provides compressed gas through a compressed gas source. The gas is blown to the inner wall of the sand mixing cylinder and the sand mixing blade through the pipeline, blowing off the residual material.
Through the design of compressed gas blow-off materials, the accumulation and curing of materials is avoided, the investment in manual cleaning is reduced, the manufacturing cost is reduced, and the quality of sand mixing is ensured.
Smart Images
Figure CN222919574U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material mixing, in particular to a sand mixing device with a cleaning function. Background Art
[0002] The function of the sand mixing device is to realize the uniform mixing of dry sand and resin. Since the resin has a certain viscosity and will slowly harden within a certain period of time, if the residual mixture after each sand mixing and sand discharging cannot be cleaned, residual sand will slowly accumulate and solidify on the inner wall of the sand mixing cylinder and the sand mixing blades. Eventually, the accumulated matter will change the original structural external dimensions of the sand mixing cylinder and the sand mixing blades, affecting the sand mixing quality. Therefore, in the existing sand mixing solutions, it is necessary to manually clean the inner wall of the sand mixing cylinder and the sand mixing blades at irregular intervals to reduce the residue of the residual sand on the inner wall of the sand mixing cylinder and the sand mixing blades. However, this method will increase the labor input and manufacturing cost. Content of the Utility Model
[0003] The purpose of the utility model is to provide a sand mixing device with a cleaning function, which can reduce the labor input and manufacturing cost.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] Provide a sand mixing device with a cleaning function, including:
[0006] A sand mixing mechanism, including a sand mixing cylinder and sand mixing blades. The sand mixing blades are rotatably arranged in the sand mixing cylinder, and the sand mixing blades are used for mixing the materials in the sand mixing cylinder;
[0007] A cleaning mechanism, including a compressed air source. The compressed air source is used to provide compressed gas, and the compressed gas is blown to the inner wall of the sand mixing cylinder and the sand mixing blades through a pipeline to blow off the materials on the inner wall of the sand mixing cylinder and the sand mixing blades.
[0008] Optionally, it further includes a rotating shaft, which is rotatably arranged in the sand mixing cylinder, and the sand mixing blades are arranged on the rotating shaft.
[0009] Optionally, a first air passage is axially formed in the rotating shaft, a second air passage is formed in the sand mixing blade, one end of the second air passage is communicated with the compressed air source through the first air passage, and the other end of the second air passage is communicated with an air outlet formed on the surface of the sand mixing blade.
[0010] Optionally, multiple sets of sand mixing blades are provided. Each set of sand mixing blades includes a plurality of sand mixing blades arranged at intervals along the circumferential direction of the rotating shaft, and multiple sets of sand mixing blades are arranged at intervals along the axial direction of the rotating shaft.
[0011] Optionally, the sand mixing blade includes a sand scraping plate, and the sand scraping plate includes an inclined portion, and the plane where the plate surface of the inclined portion is located forms an acute angle with the axial direction of the rotating shaft.
[0012] Optionally, it further includes a sand adding mechanism, and the sand adding mechanism includes a sand adding cylinder, and the sand adding cylinder is communicated with the sand inlet above the sand mixing cylinder.
[0013] Optionally, the compressed gas is also blown to the inner wall of the sand adding cylinder through a pipeline.
[0014] Optionally, it further includes a sand discharging mechanism, and the sand discharging mechanism includes a pressing member and a sand discharging door which are connected. The sand discharging door is located at the sand discharging port below the sand mixing cylinder. The pressing member can press the sand discharging door to block the sand discharging port, and the pressing member can also pull the sand discharging door to open the sand discharging port.
[0015] Optionally, the compressed gas is also blown to the surface of the sand discharging door that can face the inside of the sand discharging port through a pipeline.
[0016] Optionally, the sand discharging door has a flexible bending portion, and the flexible bending portion can be bent so that the sand discharging door has a first form and a second form. In the first form, the sand discharging door can block the sand discharging port, and in the second form, the sand discharging door can open the sand discharging port.
[0017] Advantages of the present utility model:
[0018] The present utility model provides a sand mixing device with a cleaning function, including a sand mixing mechanism and a cleaning mechanism. Among them, the sand mixing mechanism includes a sand mixing cylinder and sand mixing blades. The sand mixing blades are rotatably arranged in the sand mixing cylinder, and the sand mixing blades are used for mixing the materials in the sand mixing cylinder. The cleaning mechanism includes a compressed air source, and the compressed air source is used to provide compressed gas. The compressed gas is blown to the inner wall of the sand mixing cylinder and the sand mixing blades through a pipeline to blow off the materials on the inner wall of the sand mixing cylinder and the sand mixing blades. Through the design of blowing off the materials by compressed gas, the accumulation and solidification of the materials can be avoided, the manual cleaning input can be reduced, and thus the manufacturing cost can be reduced. Description of the drawings
[0019] Figure 1 is a structural schematic diagram of the sand mixing device with a cleaning function provided by an embodiment of the present utility model Figure 1 ;
[0020] Figure 2 is a structural schematic diagram of the sand mixing device with a cleaning function provided by an embodiment of the present utility model Figure 2 ;
[0021] Figure 3It is a partial structural schematic diagram of the sand mixing device with a cleaning function (the sand outlet is blocked by the sand outlet door) provided by an embodiment of the present utility model;
[0022] Figure 4 It is a partial structural schematic diagram of the sand mixing device with a cleaning function (the sand outlet is opened by the sand outlet door) provided by an embodiment of the present utility model;
[0023] Figure 5 It is a structural schematic diagram of the rotating shaft and the sand mixing blades (including the air path) provided by an embodiment of the present utility model;
[0024] Figure 6 It is a cross-sectional view of the sand outlet door provided by an embodiment of the present utility model.
[0025] In the figure:
[0026] 1. Sand mixing cylinder;
[0027] 2. Sand mixing blades; 21. Scraping plate; 211. Inclined part; 22. Wear-resistant plate; 201. Second air path; 202. Air outlet;
[0028] 3. Rotating shaft; 301. First air path;
[0029] 4. Sand adding cylinder; 5. Tightening part;
[0030] 6. Sand outlet door; 61. Metal part; 62. Resin part; 621. Flexible bending part;
[0031] 7. Chain; 8. Compressed air bag; 9. Frame; 10. Rotary pneumatic joint; 11. Cylinder wall blowing head; 12. Sand adding blowing head; 13. Sand outlet blowing head. Detailed implementation manners
[0032] The technical solutions of the present utility model will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all of them.
[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0034] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may also include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.
[0035] As Figures 1 - 6 shown, the sand mixing device with a cleaning function in this embodiment includes a sand mixing mechanism and a cleaning mechanism. Among them, the sand mixing mechanism includes a sand mixing cylinder 1 and sand mixing blades 2. The sand mixing blades 2 are rotatably arranged inside the sand mixing cylinder 1, and the sand mixing blades 2 are used for mixing the materials inside the sand mixing cylinder 1. The cleaning mechanism includes a compressed air source, which is used to provide compressed gas. The compressed gas is blown to the inner wall of the sand mixing cylinder 1 and the sand mixing blades 2 through a pipeline to blow off the materials on the inner wall of the sand mixing cylinder 1 and the sand mixing blades 2. Optionally, in this embodiment, the compressed air source is a compressed air bag 8. Of course, in other embodiments, it can also be the high-pressure gas pipeline in the factory area. Optionally, the compressed air bag 8 can provide pulsed high-pressure gas to improve the effect and efficiency of blowing and cleaning.
[0036] By blowing off the materials on the inner wall of the sand mixing cylinder 1 and the sand mixing blades 2 with compressed gas, it is possible to avoid the accumulation and solidification of the materials, and avoid the change of the internal dimensions of the sand mixing cylinder 1 and the external dimensions of the sand mixing blades 2 caused by the accumulation and solidification of the materials, thereby ensuring the quality of the sand core. At the same time, it can also reduce the investment in manual cleaning and reduce the manufacturing cost.
[0037] Optionally, the sand mixing device with a cleaning function further includes a frame 9. The sand mixing cylinder 1 is arranged on the frame 9, and the compressed air bag 8 is also arranged on the frame 9. The setting of the frame 9 can ensure the stable position of each component and ensure the stability of the sand mixing process.
[0038] Optionally, the sand mixing device with a cleaning function further includes a rotating shaft 3. The rotating shaft 3 is rotatably arranged inside the sand mixing cylinder 1, and the sand mixing blades 2 are arranged on the rotating shaft 3. One end of the rotating shaft 3 is connected to a rotation driving member (not shown in the figure) so that the rotation driving member drives the sand mixing blades 2 to rotate through the rotating shaft 3.
[0039] As Figures 3 - 5As shown, optionally, a first air passage 301 is axially formed in the rotating shaft 3, and a second air passage 201 is formed in the sand mixing blade 2. One end of the second air passage 201 communicates with a compressed air source through the first air passage 301, and the other end of the second air passage 201 communicates with an air outlet 202 formed on the surface of the sand mixing blade 2. Compressed air can enter the second air passage 201 in the sand mixing blade 2 through the first air passage 301 and is finally blown out from the air outlet 202 on the surface of the sand mixing blade 2, which can directly blow off the materials attached to the surface of the sand mixing blade 2.
[0040] Optionally, a rotary pneumatic joint 10 is provided at the air inlet end of the rotating shaft 3 to connect the pipeline, ensuring normal air intake under the rotating state of the rotating shaft 3.
[0041] Optionally, multiple sets of sand mixing blades 2 are provided. Each set of sand mixing blades 2 includes a plurality of sand mixing blades 2 spaced circumferentially along the rotating shaft 3, and multiple sets of sand mixing blades 2 are spaced axially along the rotating shaft 3. In this embodiment, two sets of sand mixing blades 2 are provided, and the two sets of sand mixing blades 2 are spaced apart. Each set of sand mixing blades 2 has two, and the two sand mixing blades 2 are arranged opposite to each other at 180° circumferentially along the rotating shaft 3.
[0042] Optionally, the sand mixing blade 2 includes a wear-resistant plate 22, and the wear-resistant plate 22 extends radially along the rotating shaft 3 and is connected to the rotating shaft 3 at one end. When the sand mixing blade 2 rotates, the wear-resistant plate 22 can agitate the materials.
[0043] To further improve the mixing efficiency of the materials, optionally, the sand mixing blade 2 further includes a scraping plate 21. The scraping plate 21 is connected to the end of the wear-resistant plate 22 away from the rotating shaft 3. The scraping plate 21 can scrape off the materials attached to the inner wall of the sand mixing cylinder 1 and can fully stir the materials. Optionally, the scraping plate 21 includes an inclined portion 211, and the plane where the plate surface of the inclined portion 211 is located forms an acute angle with the axial direction of the rotating shaft 3, which can further improve the mixing efficiency. In this embodiment, the distance between the two sets of sand mixing blades 2 is relatively large, and the inclined portions 211 of the two sets of sand mixing blades 2 extend and incline towards each other, that is, the two sand mixing blades 2 of the first set both incline towards the two sand mixing blades 2 of the second set, and the two sand mixing blades 2 of the second set both incline towards the two sand mixing blades 2 of the first set, so as to fully stir the materials between the two sets of sand mixing blades 2.
[0044] Optionally, both the scraping plate 21 and the wear-resistant plate 22 adopt the resin encapsulation process. With the cooperation of air blowing cleaning, no blocky residual sand can be left on the surfaces of the scraping plate 21 and the wear-resistant plate 22. At the same time, due to the relatively high hardness of the resin, the manufactured sand mixing blade 2 is more wear-resistant than the traditional sand mixing blade 2.
[0045] Optionally, the sand mixing cylinder 1 of the sand mixing device with a cleaning function is horizontally arranged, and the rotating shaft 3 extends in the horizontal direction. Of course, in other embodiments, the axial direction of the sand mixing cylinder 1 and the axial direction of the rotating shaft 3 can also be set in a non-coincident state, that is, the rotating shaft 3 is eccentrically arranged, or is arranged at an angle with the axial direction of the sand mixing cylinder 1, or both are arranged in the vertical direction.
[0046] Optionally, a cylinder wall air blowing head 11 is arranged on the side wall of the sand mixing cylinder 1. The cylinder wall air blowing head 11 is connected to the compressed air bag 8 through a pipeline to blow compressed gas to the inner wall of the sand mixing cylinder 1, which can prevent the deposition of materials and blow off the attached materials. Optionally, a plurality of cylinder wall air blowing heads 11 are arranged in the sand mixing cylinder 1, and the plurality of cylinder wall air blowing heads 11 are arranged at intervals. The cylinder wall air blowing head 11 can be arranged at the position where materials are likely to deposit, and there is no limitation here.
[0047] Optionally, the sand mixing device with a cleaning function further includes a sand adding mechanism. The sand adding mechanism is used to add materials to the sand mixing cylinder 1. The sand adding mechanism includes a sand adding cylinder 4, and the sand adding cylinder 4 is connected to the sand inlet above the sand mixing cylinder 1. Optionally, the compressed gas is also blown to the inner wall of the sand adding cylinder 4 through a pipeline. A sand adding air blowing head 12 is arranged in the sand adding cylinder 4. The sand adding air blowing head 12 is connected to the compressed air bag 8 through a pipeline to blow compressed gas to the inner wall of the sand adding cylinder 4, which can prevent materials from depositing at the sand adding cylinder 4 and reduce the inner diameter of the sand adding cylinder 4, so as to ensure smooth material addition. Optionally, the sand adding cylinder 4 has an inclined section to slow down the speed of material addition. Materials are likely to deposit on the side of the inclined section that slopes upward, so the sand adding air blowing head 12 blows air toward the side of the inclined section that slopes upward.
[0048] Optionally, the sand mixing device with a cleaning function further includes a sand discharging mechanism. The sand discharging mechanism includes a pressing member 5 and a sand discharging door 6 connected to each other. The sand discharging door 6 is located at the sand outlet below the sand mixing cylinder 1. The pressing member 5 can press the sand discharging door 6 to block the sand outlet, and the pressing member 5 can also pull the sand discharging door 6 to open the sand outlet. The part of the pressing member 5 that presses the sand discharging door 6 is located below the sand discharging door 6.
[0049] Optionally, one end of the sand discharging door 6 is connected to one side of the sand outlet, and the other end can abut against the other side of the sand outlet or disengage from the sand outlet. Optionally, the sand discharging mechanism further includes a chain 7. The pressing member 5 is connected to the sand discharging door 6 through the chain 7. When the pressing member 5 moves downward, it can pull the other end of the sand discharging door 6 to disengage from the sand outlet through the chain 7.
[0050] Optionally, the sand discharging mechanism further includes a pressing driving member. The pressing member 5 is connected to the output end of the pressing driving member so that the pressing driving member can drive one end of the pressing member 5 to rotate. The other end of the pressing member 5 can move up or down. When it moves up, it can press the sand discharging door 6, and when it moves down, it can open the sand discharging door 6. The pressing driving member is arranged at the bottom of the sand mixing cylinder 1 and is connected to the outer wall of the bottom of the sand mixing cylinder 1.
[0051] Optionally, the sand discharging door 6 includes a metal part 61 and a resin part 62. The metal part 61 is used to improve the structural strength of the sand discharging door 6, and one side in contact with the material is coated with resin to form the resin part 62.
[0052] Optionally, the sand discharging door 6 has a flexible bending part 621. The flexible bending part 621 can be bent so that the sand discharging door 6 has a first form and a second form. In the first form, the sand discharging door 6 can block the sand discharging port. In the second form, the sand discharging door 6 can open the sand discharging port. The flexible bending part 621 is made of only resin material and does not have metal material, so as to have bending elasticity here. Since one end of the sand discharging door 6 connected to the sand mixing cylinder 1 is fixedly connected to the sand mixing cylinder 1, the sealing performance can be guaranteed. However, if it is not hinged, when the other end moves, the form of the sand discharging door 6 will inevitably change. Setting the flexible bending part 621 can meet the needs of the above form change.
[0053] Optionally, the pressing member 5 has two pressing parts. One is used to press the flexible bending part 621 of the sand discharging door 6 to ensure that it does not deform under the pressure of the material weight, so as to ensure the sealing performance of the sand discharging door 6 to the sand discharging port. The other pressing part is used to press the metal part 61 of the sand discharging door 6 to ensure the overall pressing effect on the sand discharging door 6.
[0054] Optionally, the compressed gas is also blown through a pipeline to the side of the sand discharging door 6 that can face the inside of the sand discharging port. That is, a sand discharging air blowing head 13 is provided at the sand discharging door 6. When the sand discharging door 6 is in the second form, that is, when the sand discharging port is opened, the sand discharging air blowing head 13 can blow air to the side of the sand discharging door 6 that will contact the material to blow off the material on the sand discharging door 6 and prevent the sand discharging door 6 from affecting the size and direction of the sand discharging path due to deposited material.
[0055] The sand mixing device with a cleaning function can be used to mix core sand, binder and powder. Of course, in other embodiments, it can also be used for the mixing of other product materials. The sand mixing device with a cleaning function can prevent and solve the problem of material deposition and fixation. While ensuring the quality of the sand core, it can reduce the workload of manual cleaning. And the sand mixing device with a cleaning function does not adopt the separate design of the sand discharging door 6 and the sand mixing cylinder 1 in the prior art. It can save the time required for positioning and aligning the sand discharging door 6 and the sand discharging port every time the sand discharging door 6 is closed, and can ensure the sealing performance and prevent sand leakage caused by the misalignment of the sand discharging door 6 and the sand discharging port. Therefore, the sand mixing device with a cleaning function can ensure the quality of the sand core, reduce the manufacturing cost and improve the manufacturing efficiency.
[0056] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.
Claims
1. A sand mixing device with a cleaning function, characterized in that: include: A sand mixing mechanism comprises a sand mixing cylinder (1) and a sand mixing blade (2), wherein the sand mixing blade (2) is rotatably arranged in the sand mixing cylinder (1), and the sand mixing blade (2) is used to mix the material in the sand mixing cylinder (1); The cleaning mechanism comprises a compressed air source, wherein the compressed air source is used to provide compressed air, and the compressed air is blown to the inner wall of the sand mixing cylinder (1) and the sand mixing blades (2) through a pipeline to blow off the material on the inner wall of the sand mixing cylinder (1) and the sand mixing blades (2).
2. The sand mixing device with cleaning function according to claim 1, characterized in that: It also comprises a rotating shaft (3), the rotating shaft (3) being rotatably arranged in the sand mixing cylinder (1), and the sand mixing blades (2) being arranged on the rotating shaft (3).
3. The sand mixing device with cleaning function according to claim 2, characterized in that: The rotating shaft (3) is provided with a first air path (301) along its axial direction, and the sand mixing blade (2) is provided with a second air path (201), one end of the second air path (201) is connected to the compressed air source via the first air path (301), and the other end of the second air path (201) is connected to an air outlet (202) provided on the surface of the sand mixing blade (2).
4. The sand mixing device with cleaning function according to claim 2, characterized in that: The sand mixing blades (2) are provided in a plurality of sets, each set of the sand mixing blades (2) comprising a plurality of the sand mixing blades (2) arranged at intervals along the circumference of the rotating shaft (3), and the plurality of sets of the sand mixing blades (2) are arranged at intervals along the axial direction of the rotating shaft (3).
5. The sand mixing device with cleaning function according to claim 2, characterized in that: The sand mixing blade (2) comprises a sand scraping plate (21), the sand scraping plate (21) comprises an inclined portion (211), and an acute angle is formed between a plane where a plate surface of the inclined portion (211) is located and an axial direction of the rotating shaft (3).
6. The sand mixing device with cleaning function according to any one of claims 1 to 5, characterized in that: It also comprises a sand adding mechanism, which comprises a sand adding cylinder (4), and the sand adding cylinder (4) is connected to the sand inlet above the sand mixing cylinder (1).
7. The sand mixing device with cleaning function according to claim 6, characterized in that: The compressed gas is also blown to the inner wall of the sand adding cylinder (4) through a pipeline.
8. The sand mixing device with cleaning function according to any one of claims 1 to 5, characterized in that: The sand outlet mechanism also comprises a sand outlet mechanism, which comprises a connected pressing member (5) and a sand outlet door (6), wherein the sand outlet door (6) is located at a sand outlet below the sand mixing cylinder (1), and the pressing member (5) can press the sand outlet door (6) to block the sand outlet, and the pressing member (5) can also pull the sand outlet door (6) to open the sand outlet.
9. The sand mixing device with cleaning function according to claim 8, characterized in that: The compressed gas is also blown through a pipeline to a side of the sand outlet door (6) that is directed toward the inside of the sand outlet.
10. The sand mixing device with cleaning function according to claim 8, characterized in that: The sand outlet door (6) has a flexible bending portion (621), and the flexible bending portion (621) can be bent so that the sand outlet door (6) has a first form and a second form. In the first form, the sand outlet door (6) can block the sand outlet, and in the second form, the sand outlet door (6) can open the sand outlet.