Special mortar production fine sand screening device

Abstract

The application relates to a fine sand screening device for special mortar production and relates to the technical field of special sand production. The device comprises a screening box, a raw material box is communicated with a feeding opening of the screening box, a sieve plate is arranged in the screening box, the sieve plate is arranged obliquely, a sand outlet is formed in an inner wall of a lower end of the screening box close to the sieve plate, a grinding mechanism is communicated with the sand outlet, a receiving plate is arranged below the sieve plate, the receiving plate is arranged obliquely, and a collecting opening is formed in an inner wall of a lower end of the screening box close to the receiving plate. The application has the effects of realizing fine sand screening work in the special mortar production process and improving the quality of the special mortar.

Description

Technical Field

[0001] This application relates to the field of special sand production technology, and in particular to a fine sand screening device for special mortar production. Background Technology

[0002] High-performance special sand refers to sand mold materials with special physical and chemical properties, used in high-end casting, precision manufacturing, or specific industrial fields. Its core advantages are high temperature resistance, corrosion resistance, strong thermal stability, and it can significantly improve the surface quality, dimensional accuracy, and production efficiency of castings. In the construction field, some special mortars have strict requirements on the particle size of special sand during production, and special sand needs to be screened to improve the quality of special mortar. Therefore, this application provides a fine sand screening device for the production of special mortar. Utility Model Content

[0003] In order to achieve the screening of fine sand in the production process of special mortar and improve the quality of special mortar, this application provides a fine sand screening device for the production of special mortar.

[0004] The fine sand screening device for special mortar production provided in this application adopts the following technical solution:

[0005] A fine sand screening device for special mortar production includes a screening box, a raw material box connected to the feeding port of the screening box, a screen plate installed inside the screening box, the screen plate being inclined, a sand outlet opening on the inner wall of the screening box near the lower end of the screen plate, the sand outlet being connected to a grinding mechanism, a receiving plate installed below the screen plate, the receiving plate being inclined, and a collection port opening on the inner wall of the screening box near the lower end of the receiving plate.

[0006] By adopting the above technical solution, the raw material box feeds special sand into the screening box. The fine sand passes through the screen plate and falls onto the surface of the receiving plate, then slides towards the collection port to enter the collection port and complete the screening. The larger particles of special sand will enter the sand outlet and enter the grinding mechanism for grinding to form finer sand. The screening device of this application can effectively screen out the fine sand of special sand, thereby improving the product quality of special mortar.

[0007] Preferably, the surface of the sieve plate is provided with a plurality of sand-reducing grooves, which are opened along the width direction of the sieve plate and distributed along the length direction of the sieve plate. Each sand-reducing groove has a sand-blocking protrusion on the lower end of its surface.

[0008] By adopting the above technical solution, when the special sand falls onto the screen plate surface, it will slide along the inclined direction of the screen plate surface. The fine sand will fall through the sand trough, while the larger particles of special sand will not be able to enter the sand trough and will continue to roll along the screen plate and enter the sand outlet. The sand blocking protrusions can block the fine sand and reduce the fine sand entering the sand outlet to ensure screening efficiency.

[0009] Preferably, the length of the sand trough is less than the width of the sieve plate, the sand trough is opened from one side of the sieve plate to the other side, and the sand trough is opened on both sides of the sieve plate in both length directions, with the sand troughs in the two directions spaced apart.

[0010] By adopting the above technical solution, the integrated design of the sieve plate can be guaranteed, and the ease of installation or disassembly of the sieve plate and screening box can be improved.

[0011] Preferably, each of the sand troughs is provided with a filter assembly for filtering out debris.

[0012] By adopting the above technical solution, the filter assembly can filter impurities in the special sand, preventing impurities such as leaves from passing through the sand trough and improving the screening quality of fine sand in the special sand.

[0013] Preferably, the filter assembly includes two fixing blocks and a filter body. The filter body is arc-shaped and is disposed between the two fixing blocks. The fixing blocks are used to fix the ends of the filter body. An insertion groove for the fixing blocks to extend into is provided below the sieve plate.

[0014] By adopting the above technical solution, it is easy to install the filter body and the screening box, thereby improving the convenience and practicality of filter assembly installation.

[0015] Preferably, the fixing block includes an upper clamping plate, a lower clamping plate, and fasteners, with the end of the filter body clamped between the upper clamping plate and the lower clamping plate, and the fasteners used to fix the upper clamping plate and the lower clamping plate.

[0016] By adopting the above technical solution, the fixing block is set as a detachable connection between the upper and lower clamping plates, which facilitates the installation and replacement of the filter body, saves the overall replacement and maintenance cost of the filter assembly, and has high economic benefits and convenience.

[0017] Preferably, the fastener is a screw, and the surface of the upper clamping plate has a countersunk groove for the end of the fastener to enter.

[0018] By adopting the above technical solution, the countersunk groove can completely hide the fasteners, thereby preventing the fasteners from being exposed and interfering with the installation of the filter assembly, and improving the ease of assembly of the filter assembly.

[0019] Preferably, the discharge port of the grinding mechanism is provided with a lifting mechanism, which is used to re-input the ground special sand into the raw material box.

[0020] By adopting the above technical solution, the lifting mechanism can transport the finer special sand after grinding towards the raw material box, so that it can enter the screening box for secondary screening, thereby improving the working efficiency of the screening device of this application.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The raw material box feeds special sand into the screening box. Fine sand will pass through the screen plate and fall onto the surface of the receiving plate, and then slide towards the collection port to enter the collection port to complete the screening. The larger particles of special sand will enter the sand outlet and enter the grinding mechanism for grinding to form finer sand. The screening device of this application can effectively screen out the fine sand of special sand, thereby improving the product quality of special mortar.

[0023] 2. When the special sand falls onto the screen plate surface, it will slide along the inclined direction of the screen plate surface. The fine sand will fall through the sand trough, while the larger particles of special sand will not be able to enter the sand trough and will continue to roll along the screen plate and enter the sand outlet. The sand blocking protrusions can block the fine sand and reduce the fine sand entering the sand outlet to ensure screening efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a fine sand screening device for special mortar production according to an embodiment of this application.

[0025] Figure 2 This is a cross-sectional view of the filter box according to an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the sieve plate according to an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of the structure of the fixing block according to an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Screening box; 11. Sand outlet; 12. Collection port; 13. Insertion groove; 2. Raw material box; 3. Screen plate; 31. Lower sand trough; 32. Sand blocking protrusion; 4. Grinding mechanism; 5. Receiving plate; 6. Filter screen assembly; 61. Fixing block; 611. Upper clamping plate; 612. Lower clamping plate; 613. Fastener; 614. Countersunk groove; 62. Filter screen body; 7. Lifting mechanism. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0030] This application discloses a fine sand screening device for special mortar production. (Refer to...) Figure 1 , Figure 2 and Figure 3 The system includes a screening box 1, whose feed inlet is connected to a raw material box 2 for feeding special sand into the screening box 1. A screen plate 3 is installed inside the screening box 1, and the screen plate 3 is inclined. Several sand-lowering grooves 31 are formed on the surface of the screen plate 3, all along the width direction of the screen plate 3 and distributed along the length direction of the screen plate 3. In this embodiment, the length of the sand-lowering groove 31 is less than the width of the screen plate 3. Each sand-lowering groove 31 is formed from one side of the screen plate 3 along its length direction to the other side along its length direction. Both sides along its length direction are provided with... The sand troughs 31 are spaced apart in different directions to allow the screen plate 3 to be integrated and improve installation efficiency. Each sand trough 31 has a semi-cylindrical sand-blocking protrusion 32 formed on the lower end surface to restrict the fine sand from sliding along the screen plate 3 and improve screening efficiency. The inner wall of the screening box 1 near the lower end of the screen plate 3 has a sand outlet 11, which is connected to a grinding mechanism 4 for grinding coarse sand. The discharge port of the grinding mechanism 4 is connected to a lifting mechanism 7 for re-inputting the ground fine sand into the raw material box 2 for screening.

[0031] Reference Figure 1 and Figure 2 The screening box 1 is also equipped with a receiving plate 5, which is located below the sieve plate 3. The receiving plate 5 is inclined, with the higher end of the receiving plate 5 corresponding to the lower end of the sieve plate 3. The inner wall of the screening box 1 near the lower end of the receiving plate 5 is provided with a collection port 12 for collecting fine sand.

[0032] Reference Figure 2 , Figure 3 and Figure 4 Each sand trough 31 is equipped with a filter screen assembly 6 for filtering impurities in fine sand. The filter screen assembly 6 includes two fixing blocks 61 and an arc-shaped filter screen body 62. The filter screen body 62 is disposed between the two fixing blocks 61. The fixing block 61 includes an upper clamping plate 611, a lower clamping plate 612, and a fastener 613. The end of the filter screen body 62 is disposed between the upper clamping plate 611 and the lower clamping plate 612. In this embodiment, the fastener 613 is a screw. The fastener 613 passes through the upper clamping plate 611 and is threadedly engaged with the lower clamping plate 612. The surface of the upper clamping plate 611 is provided with a countersunk groove 614 for the end of the fastener 613 to enter, so as to reduce the interference caused by the exposed end of the fastener 613. The screening box 1 is provided with an insertion groove 13 for the fixing block 61 to extend into, so as to improve the ease of installation of the filter screen assembly 6.

[0033] The implementation principle of the fine sand screening device for special mortar production in this application embodiment is as follows: the special sand is input into the screening box 1 from the raw material box 2. The fine sand will pass through the screen plate 3 and fall onto the surface of the receiving plate 5, and then slide towards the collection port 12 to enter the collection port 12 to complete the screening. The special sand with larger particles will enter the sand outlet 11 and enter the grinding mechanism 4 for grinding to form finer sand. The screening device of this application can effectively screen out the fine sand of special sand, thereby improving the product quality of special mortar.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fine sand screening device for special mortar production, characterized in that: The system includes a screening box, the feeding port of which is connected to a raw material box. A sieve plate is installed inside the screening box, and the sieve plate is inclined. A sand outlet is opened on the inner wall of the screening box near the lower end of the sieve plate, and the sand outlet is connected to a grinding mechanism. A receiving plate is installed below the sieve plate, and the receiving plate is inclined. A collection port is opened on the inner wall of the screening box near the lower end of the receiving plate. Several sand-lowering grooves are opened on the surface of the sieve plate, extending along the width of the sieve plate and distributed along the length of the sieve plate. Each sand-lowering groove has a sand-blocking protrusion on its lower end surface. The length of each sand-lowering groove is less than the width of the sieve plate. The sand-lowering grooves extend from one side of the sieve plate to the other side, with sand-lowering grooves opened on both sides of the sieve plate along their length, spaced apart.

2. The fine sand screening device for special mortar production according to claim 1, characterized in that: Each of the sand troughs is equipped with a filter screen assembly for filtering out debris.

3. The fine sand screening device for special mortar production according to claim 2, characterized in that: The filter assembly includes two fixing blocks and a filter body. The filter body is arc-shaped and is disposed between the two fixing blocks. The fixing blocks are used to fix the ends of the filter body. An insertion groove is provided below the sieve plate for the fixing blocks to extend into.

4. The fine sand screening device for special mortar production according to claim 3, characterized in that: The fixing block includes an upper clamping plate, a lower clamping plate, and fasteners. The end of the filter body is clamped between the upper clamping plate and the lower clamping plate, and the fasteners are used to fix the upper clamping plate and the lower clamping plate.

5. The fine sand screening device for special mortar production according to claim 4, characterized in that: The fastener is a screw, and the surface of the upper clamping plate has a countersunk groove for the end of the fastener to enter.

6. The fine sand screening device for special mortar production according to claim 1, characterized in that: The discharge port of the grinding mechanism is equipped with a lifting mechanism, which is used to re-feed the ground special sand into the raw material box.

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