A waterproof membrane sand spreading device
By introducing a rotatable baffle and scraper structure into the sand spreading device, the problem of the sand outlet being unable to be adjusted was solved, enabling applicability to waterproof membranes of different widths and uniform distribution of sand particles, thereby improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SKSHU PAINT
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-26
AI Technical Summary
The sand outlet of the existing sand-spreading device cannot be adjusted, resulting in insufficient applicability to waterproof membranes of different widths.
A sand-spreading device for waterproof membrane was designed. By setting a rotatable baffle and a discharge adjustment plate at the bottom of the discharge trough, the width of the sand outlet can be adjusted. It is also equipped with a scraper and a collection box to maintain the uniform distribution of sand particles.
The sand spreading device is applicable to waterproof membranes of different widths, ensuring that the sand particles are spread evenly and maintaining the flatness of the membrane surface, thereby improving production efficiency and product quality.
Smart Images
Figure CN224271949U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof membrane production technology, and in particular to a waterproof membrane sand spreading device. Background Technology
[0002] Waterproof membrane is a flexible sheet material used for building waterproofing, typically made of asphalt, polymers (such as SBS, APP, PVC, TPO, EPDM), or modified rubber. It possesses good waterproofing properties, weather resistance, aging resistance, and a certain degree of flexibility, and is widely used as a waterproofing layer in roofs, basements, tunnels, bridges, and other projects. During the production of asphalt-based waterproof membranes, a layer of fine sand or mineral particles is usually sprinkled onto the surface to improve its surface performance. This process enhances the membrane's abrasion resistance, UV resistance, and prevents it from sticking together during storage or transportation. In the sand-sprinkling process, the width of the sand outlet of the sand-sprinkling device needs to correspond to the width of the waterproof membrane. Currently, the sand outlet of sand-sprinkling devices on the market is generally not adjustable, and its applicability to waterproof membranes of different widths needs improvement. Utility Model Content
[0003] This invention addresses the inconvenience of adjusting the sand outlet of existing sand-spreading devices by proposing a waterproof membrane sand-spreading device that allows for adjustment of the sand outlet width.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0005] This utility model provides a sand spreading device for waterproof membrane, including a sand box and a conveyor for conveying the waterproof membrane. The conveyor is located below the outlet of the sand box. A discharge trough with a semi-cylindrical bottom is provided below the sand box. A strip-shaped discharge outlet is provided at the bottom of the discharge trough. A discharge adjustment plate is provided on the outer side of the bottom surface of the discharge trough. The discharge adjustment plate is rotatably connected to the discharge trough. The discharge adjustment plate includes an arc-shaped baffle. The baffle is coaxially arranged with the bottom surface of the discharge trough. A flow hole for sand particles to pass through is provided on the baffle. The horizontal projection of the flow hole is triangular. The discharge adjustment plate rotates relative to the bottom of the discharge trough to adjust the discharge width of the discharge outlet.
[0006] Preferably, the discharge regulating plate includes a baffle and two side plates, the baffle is located between the two side plates, and the side plates are rotatably connected to the side of the discharge trough.
[0007] Preferably, an arc-shaped discharge switch plate is provided inside the bottom surface of the discharge trough. The discharge switch plate is rotatably connected to the discharge trough and is coaxially arranged with the bottom of the discharge trough. The discharge switch plate rotates relative to the bottom of the discharge trough to open or close the discharge port.
[0008] Preferably, a second rotating shaft is provided at the bottom of the discharge trough, the second rotating shaft is rotatably connected to the discharge trough, the second rotating shaft is connected to the inner wall of the discharge switch plate through a connecting rod, and the outer wall of the discharge switch plate is in contact with the inner wall of the bottom of the discharge trough.
[0009] Preferably, the conveying component is a conveyor belt, and the conveying surface of the conveyor belt is located below the discharge chute.
[0010] Preferably, a scraper is also provided on the conveying path of the conveyor belt. The scraper is located above the conveying surface of the conveyor belt. The scraper is connected to the frame through a functional cylinder, which is used to adjust the lifting and lowering of the scraper.
[0011] Preferably, collection boxes are provided on both sides of the conveyor belt, and the collection boxes are located on both sides of the scraper. The collection boxes are used to collect the scraped sand particles.
[0012] The beneficial effects of this utility model are:
[0013] 1. This waterproof membrane sand-spreading device is used for sand-spreading treatment of waterproof membranes. After coating, the waterproof membrane can pass through a conveyor belt, and sand particles can be sprinkled onto the waterproof membrane from the discharge port of the discharge trough. A baffle is set below the discharge port of this sand-spreading device, and a triangular flow hole is set on the baffle. The baffle can block the discharge port, and the sand particles can only be discharged from the flow hole. The baffle can be rotated relative to the discharge trough to change the width of the baffle blocking the discharge port, thereby adjusting the discharge width of the discharge port, so that this sand-spreading device can be used for waterproof membranes of different widths.
[0014] 2. This waterproof membrane sand spreading device is equipped with scrapers along the moving path of the waterproof membrane. The scrapers can scrape off excess sand particles on the waterproof membrane, maintaining the flatness of the sand particles on the waterproof membrane. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the waterproof membrane sand spreading device in Example 1;
[0016] Figure 2 This is a schematic diagram of the radial structure of the discharge trough of the waterproof membrane sand spreading device in Example 1;
[0017] Figure 3 This is a schematic diagram of the structure of the waterproof membrane sand spreading device in Example 1, showing the installation of the second motor on the discharge trough.
[0018] Figure 4 This is a schematic diagram of the structure of the waterproof membrane sand spreading device in Example 1, showing the installation of the third motor on the discharge trough.
[0019] Figure 5 This is a schematic diagram of the baffle of the waterproof membrane sand-spreading device in Example 1;
[0020] Figure 6 This is a schematic diagram of the side of the baffle of the waterproof membrane sand spreading device in Example 1.
[0021] [Explanation of Labels in the Attached Image]
[0022] 1. Base; 2. Conveyor belt; 3. Sand box; 4. Discharge chute; 5. Discharge adjustment plate; 6. Discharge switch plate; 7. Functional cylinder; 8. Scraper; 9. Collection box; 10. Column; 11. Support frame; 12. Second motor; 13. First rotating shaft; 14. Third motor; 15. Second rotating shaft; 21. Conveyor wheel; 41. Discharge port; 51. Baffle; 52. Side plate; 53. Flow hole; 61. Connecting rod. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] Example 1
[0025] Reference Figure 1 A waterproof membrane sand-spreading device includes a base 1, on which a conveyor belt 2 is mounted. The conveyor belt 2 is supported and driven by two conveyor wheels 21, and is used to convey waterproof membrane. The two conveyor wheels 21 are each supported by two first supports. The upper end of the first support is rotatably connected to the conveyor wheel 21, and the lower end of the first support is fixedly connected to the base 1. One of the first supports is equipped with a first motor (not shown). The output shaft of the first motor is connected to the rotating shaft of the conveyor wheel 21, and the first motor drives the conveyor wheel 21 to rotate, thus realizing the conveying function of the conveyor belt 2.
[0026] A support frame 11 is mounted on top of the base 1, and the support frame 11 is fixedly connected to the base 1 by four columns 10. A sand box 3 is fixedly mounted on the support frame 11, and the sand box 3 is used to hold sand. A discharge chute 4 is provided at the bottom of the sand box 3, and a discharge port 41 is provided at the bottom of the discharge chute 4, which is located above the conveyor belt 2. The sand inside the sand box 3 is scattered from the discharge port 41 through the discharge chute 4 onto the waterproof membrane conveyed by the conveyor belt 2.
[0027] refer to Figure 1 and Figure 2The upper part of the discharge trough 4 is connected to the sand box 3. The bottom of the discharge trough 4 is semi-cylindrical. The bottom of the discharge trough 4 is provided with a strip-shaped discharge port 41. The extension direction of the discharge port 41 is the axial direction of the discharge trough 4.
[0028] refer to Figure 3 and Figure 4 A discharge adjusting plate 5 is provided on the outer bottom surface of the discharge trough 4. The discharge adjusting plate 5 includes a baffle 51 and two side plates 52, with the baffle 51 located between the two side plates 52. The side plates 52 are rotatably connected to the side surface of the discharge trough 4, achieving a coaxial rotatable connection between the baffle 51 and the discharge trough 4. (Reference) Figure 5 and Figure 6 The baffle 51 is arc-shaped, and its inner wall is in contact with the outer wall of the cylindrical plate of the discharge chute 4. A flow hole 53 is provided on the baffle 51 for the passage of sand particles. The horizontal projection of the flow hole 53 is an isosceles triangle, with its two sides approaching each other from the bottom ends. The bottom of the flow hole 53 is its widest point, and the top of the flow hole 53 is its narrowest point.
[0029] After the sand particles inside the discharge trough 4 flow out of the discharge port 41, they will flow out through the flow hole 53 of the baffle 51. The baffle 51 can rotate relative to the discharge trough 4, thereby adjusting the relative position of the flow hole 53 at the discharge port 41, and thus changing the width of the flow hole 53 below the discharge port 41. This allows for adjustment of the discharge width below the discharge port 41, making this sand spreading device suitable for waterproof membranes of different widths.
[0030] refer to Figure 3 A second bracket is provided on the base 1, and a second motor 12 is fixedly mounted on the second bracket. The output shaft of the second motor 12 is fixedly connected to a first rotating shaft 13, and the end of the first rotating shaft 13 away from the second motor 12 is fixedly connected to the rotation center of the side plate 52. The second motor 12 is used to drive the side plate 52 to rotate, thereby rotating the baffle 51 relative to the discharge trough 4, and thus changing the discharge width below the discharge port 41.
[0031] refer to Figure 2 The bottom surface of the discharge trough 4 is provided with a discharge switch plate 6. The discharge switch plate 6 is arc-shaped. The outer wall of the discharge switch plate 6 is attached to the inner wall of the bottom of the discharge trough 4. The discharge switch plate 6 rotates relative to the bottom of the discharge trough 4 to open or close the discharge port 41.
[0032] The bottom of the discharge trough 4 is also provided with a second rotating shaft 15. The two ends of the second rotating shaft 15 are rotatably connected to the side of the discharge trough 4. The second rotating shaft 15 is coaxially arranged with the first rotating shaft 13. The second rotating shaft 15 is connected to the inner wall of the discharge switch plate 6 through a connecting rod 61. The second rotating shaft 15 can rotate synchronously with the discharge switch plate 6.
[0033] The base 1 has a third support bracket, and the third support bracket has a third motor 14 mounted on it. (Reference) Figure 4 One end of the second rotating shaft 15 extends through the side wall and side plate 52 of the discharge trough 4, and the extended end of the second rotating shaft 15 is fixedly connected to the output end of the third motor 14. The third motor 14 is used to drive the second rotating shaft 15 and the discharge switch plate 6 to rotate, thereby opening or closing the discharge port 41.
[0034] refer to Figure 1 A scraper 8 is also installed on the conveying path of the conveyor belt 2. The scraper 8 is connected to the support frame 11 via a functional cylinder 7. The functional cylinder 7 is an electric cylinder, and its axis is perpendicular to the upper conveying surface of the conveyor belt 2. The functional cylinder 7 is used to adjust the lifting and lowering of the scraper 8. The scraper 8 is located above the upper conveying surface of the conveyor belt 2. The scraper 8 can scrape off excess sand particles from the waterproof membrane, maintaining the flatness of the sand particles on the waterproof membrane. The functional cylinder 7 can adjust the position of the scraper 8, adjust the distance between the scraper 8 and the upper conveying surface of the conveyor belt 2, and adjust the thickness of the sand particles on the waterproof membrane.
[0035] Meanwhile, collection boxes 9 are respectively installed on both sides of the conveyor belt 2. The collection boxes 9 are located on both sides of the scraper 8. The sand particles scraped off by the scraper 8 can fall into the collection boxes 9, which can collect the sand particles and prevent them from scattering everywhere. The scraping surface of the scraper 8 can be flat or V-shaped, with the V-shaped scraping surface being more conducive to the removal of sand particles.
[0036] The working process of the waterproof membrane sand-spreading device in this embodiment is as follows:
[0037] First, the second motor 12 rotates the discharge adjustment plate 5, and the baffle 51 rotates relative to the discharge trough 4, adjusting the relative position of the flow hole 53 at the discharge port 41, so that the width of the flow hole 53 corresponds to the width of the target waterproof membrane.
[0038] Then, the waterproof membrane enters the conveyor belt 2 after the coating is applied. The conveyor belt 2 transports the waterproof membrane, which passes through the discharge chute 4 at the bottom of the sand box 3. The third motor 14 drives the second rotating shaft 15 and the discharge switch plate 6 to rotate, and the discharge port 41 is in the open state. The sand inside the sand box 3 is scattered from the discharge port 41 of the discharge chute 4 onto the waterproof membrane, forming a sand layer on the waterproof membrane.
[0039] Finally, the waterproof membrane passes through scraper 8, which scrapes away excess sand particles from the waterproof membrane, maintaining the flatness of the sand particles on the waterproof membrane. The scraped-off sand particles fall into collection box 9 and are collected.
[0040] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0043] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A waterproofing membrane sanding device, characterized by, The device includes a sand box and a conveyor for conveying waterproof membrane. The conveyor is located below the outlet of the sand box. A semi-cylindrical discharge trough is provided below the sand box, and a strip-shaped discharge outlet is provided at the bottom of the discharge trough. A discharge adjustment plate is provided on the outer side of the bottom surface of the discharge trough. The discharge adjustment plate is rotatably connected to the discharge trough. The discharge adjustment plate includes an arc-shaped baffle, which is coaxially arranged with the bottom surface of the discharge trough. A flow hole for sand particles to pass through is provided on the baffle. The horizontal projection of the flow hole is triangular. The discharge adjustment plate rotates relative to the bottom of the discharge trough to adjust the discharge width of the discharge outlet.
2. The waterproofing membrane sanding device of claim 1, wherein, The discharge regulating plate includes a baffle and two side plates. The baffle is located between the two side plates, and the side plates are rotatably connected to the side of the discharge chute.
3. The waterproofing membrane sanding device of claim 1, wherein, An arc-shaped discharge switch plate is provided inside the bottom surface of the discharge trough. The discharge switch plate is rotatably connected to the discharge trough and is coaxially arranged with the bottom of the discharge trough. The discharge switch plate rotates relative to the bottom of the discharge trough to open or close the discharge port.
4. The waterproof membrane sand-spreading device according to claim 3, characterized in that, A second rotating shaft is provided at the bottom of the discharge trough. The second rotating shaft is rotatably connected to the discharge trough. The second rotating shaft is connected to the inner wall of the discharge switch plate through a connecting rod. The outer wall of the discharge switch plate is in contact with the inner wall of the bottom of the discharge trough.
5. The waterproof membrane sand-spreading device according to claim 1, characterized in that, The conveying component is a conveyor belt, and the conveying surface of the conveyor belt is located below the discharge chute.
6. The waterproof membrane sand-spreading device according to claim 5, characterized in that, A scraper is also provided on the conveying path of the conveyor belt. The scraper is located above the conveying surface of the conveyor belt. The scraper is connected to the frame through a functional cylinder, which is used to adjust the lifting and lowering of the scraper.
7. The waterproof membrane sand-spreading device according to claim 6, characterized in that, Collection boxes are provided on both sides of the conveyor belt. The collection boxes are located on both sides of the scraper and are used to collect the scraped sand particles.