A sand screening device for construction engineering
By designing adjustable screening equipment, the problem of the screen angle being difficult to adjust was solved, achieving efficient and stable sand screening and ensuring the quality of concrete in construction projects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANCHANG BEIGU MACHINERY DESIGN RESEARCH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-09
AI Technical Summary
The existing screening device has a fixed structure and the screen tilt angle is not easy to adjust, which makes sand screening inconvenient and affects the quality of concrete pouring.
A sand screening device was designed, comprising a screening mechanism, an adjustable support mechanism, a collection mechanism, and a feeding mechanism. The screen is driven to slide by a hydraulic cylinder. Combined with the adjustable support mechanism and a locking pin structure, the screen angle can be flexibly adjusted. It is also equipped with a collection sleeve and a feeding pipe to ensure stable and efficient screening.
It enables rapid adjustment of the screen angle, improves the convenience and stability of screening operations, ensures efficient sand screening, and enhances the mixing quality of concrete in construction projects.
Smart Images
Figure CN224332730U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand screening technology, specifically to a sand screening device for construction engineering. Background Technology
[0002] Sand screening is an important quality control method in construction engineering. Screening can remove harmful components such as mud and gravel from sand, avoid affecting the cement hydration reaction, and ensure that it meets the performance requirements of building materials such as concrete and mortar.
[0003] When constructing houses and some infrastructure projects, fine sand needs to be mixed with cement and other auxiliary materials to form concrete for pouring. Because large pieces of sand and gravel mixed in the sand will reduce the bonding force of the cement paste, it will affect the hardness of the concrete after pouring, and thus affect the compressive and flexural strength. At this time, the sand needs to be screened. Common screening devices have fixed structures, which makes it difficult to adjust the tilt angle of the screen, making it inconvenient to screen the sand. Utility Model Content
[0004] This invention provides a sand screening device for construction engineering, which solves the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0006] An embodiment of this utility model provides a sand screening device for construction engineering, comprising:
[0007] Fixed frame;
[0008] A hydraulic cylinder, which is fixedly connected to the inner wall of the fixed frame;
[0009] A screening mechanism is disposed on the surface of a fixed frame. The screening mechanism includes a rectangular frame and a screen. The rectangular frame slides on the inner wall of the fixed frame. The rectangular frame is fixedly connected to the screen, and the screen is located on the inner wall of the rectangular frame. The rectangular frame is fixedly connected to the output end of a hydraulic cylinder.
[0010] An adjustable support mechanism is provided on the surface of a fixed frame. The adjustable support mechanism includes an adjusting rod and a support sleeve, with the adjusting rod and support sleeve located below the fixed frame. The support sleeve is slidably connected to the adjusting rod and is sleeved on the surface of the adjusting rod. A rotating block is rotatably connected to the surface of the support sleeve, and a locking pin is fixedly connected to the surface of the rotating block. The locking pin is adapted to the tooth groove size on the adjusting rod.
[0011] A collection mechanism is disposed on the surface of a fixed frame. The collection mechanism includes a collection sleeve, which is fixedly connected to a rectangular frame and is located at the bottom of the screen at a 15-degree angle.
[0012] The feeding mechanism is disposed on the surface of the fixed frame. The feeding mechanism includes a hopper and multiple feeding pipes. The hopper is located above the screen and is fixedly connected to the multiple feeding pipes.
[0013] Furthermore, the surface of the fixed frame is fixedly connected with multiple limiting blocks, the surface of the rectangular frame is fixedly connected with two support rods, the ends of the support rods are fixedly connected with blocks, the arc surface of the support rods is fitted with springs, one end of the springs is fixedly connected to the rectangular frame, the other end of the springs is fixedly connected to the fixed frame, and the surface of the rectangular frame is fixedly connected with two baffles.
[0014] Furthermore, two adapter blocks A are fixedly connected to the surface of the fixed frame, and a support leg is rotatably connected to the surface of the adapter block A. Two sliders are slidably connected to the inner wall of the fixed frame, and an adapter block B is fixedly connected to the surface of the slider. The adjusting gear is fixedly connected to the adapter block B.
[0015] Furthermore, a disc block is fixedly connected to the surface of the fixed frame, a collection bucket is detachably installed on the surface of the disc block, a hanging rod is fixedly connected to the surface of the collection bucket, and the hanging rod can be hung in the circular groove on the disc block, and the discharge port of the collection sleeve is located above the collection bucket.
[0016] Furthermore, the surface of the fixed frame is fixedly connected to two fixed brackets, and the two fixed brackets are rotatably connected to the hopper.
[0017] Furthermore, the two baffles are located on both sides of the screen, and the two baffles are fixedly connected to the collecting sleeve, with the section of the collecting sleeve located inside the two baffles being open.
[0018] Furthermore, two support rods A are fixedly connected to the surfaces of the two support legs, two support rods B are fixedly connected to the surfaces of the two support sleeves, and two support rods C are fixedly connected to the surfaces of the two adjusting gears.
[0019] Furthermore, two telescopic rods are fixedly connected to the surface of the support leg, and the other ends of the two telescopic rods are fixedly connected to the support sleeve.
[0020] The above-described solution of this utility model has at least the following beneficial effects:
[0021] 1. This utility model, by setting up a screening mechanism, an adjustable support mechanism, a collection mechanism and a feeding mechanism, enables the rapid adjustment of the tilt angle of the screen, and has high support strength, making it less prone to tilting and tipping over, thereby ensuring the convenience of sand screening operations and improving the practicality of the device. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a utility model Figure 1 Another perspective structural diagram;
[0024] Figure 3 This is a utility model Figure 2 A schematic diagram of a partial structure;
[0025] Figure 4 This is a schematic diagram of the disassembled structure of the adjusting gear of this utility model;
[0026] Figure 5 This is a partial structural schematic diagram of the adjustable support mechanism of this utility model;
[0027] Figure 6 This is a utility model Figure 4 A magnified structural diagram at point A;
[0028] Figure 7 This is a schematic diagram of the material feeding mechanism of this utility model.
[0029] Explanation of reference numerals in the attached figures:
[0030] 1. Fixed frame; 2. Hydraulic cylinder; 3. Screening mechanism; 31. Rectangular frame; 32. Screen; 33. Baffle; 34. Stop block; 35. Limiting block; 36. Support rod; 37. Spring; 4. Adjustable support mechanism; 401. Adapter block A; 402. Adapter block B; 403. Adjusting gear; 404. Support leg; 405. Support sleeve; 406. Slider; 407. Rotating block; 408. Locking pin; 409. Telescopic rod; 410. Support rod A; 411. Support rod B; 412. Support rod C; 5. Collection mechanism; 51. Disc block; 52. Collection bucket; 53. Hanging rod; 54. Collection sleeve; 6. Discharge mechanism; 61. Fixed bracket; 62. Hopper; 63. Discharge pipe. Detailed Implementation
[0031] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0032] like Figures 1 to 7 As shown, an embodiment of this utility model provides a sand screening device for construction engineering, including: a fixed frame 1; and a hydraulic cylinder 2, which is fixedly connected to the inner wall of the fixed frame 1.
[0033] like Figures 1 to 3 As shown, the screening mechanism 3 is mounted on the surface of the fixed frame 1. The screening mechanism 3 includes a rectangular frame 31 and a screen 32. The rectangular frame 31 slides within the inner wall of the frame and is fixedly connected to the screen 32, with the screen 32 located within the inner wall of the rectangular frame 31. The rectangular frame 31 is fixedly connected to the output end of the hydraulic cylinder 2. After the angle of the screen 32 is adjusted, the hydraulic cylinder 2 is activated to drive the screen 32 to slide back and forth. Under the drive of the hydraulic cylinder 2, the screen 32 moves back and forth, causing the screened mud and gravel to slide to the bottom of the screen 32. The screened sand falls below the screen 32. Multiple limiting blocks 35 are fixedly connected to the surface of the fixed frame 1. Two support rods 36 are fixedly connected to the surface of the rectangular frame 31. A stop block 34 is fixedly connected to the end of each support rod 36. A spring 37 is fitted onto the arc surface. One end of the spring 37 is fixedly connected to the rectangular frame 31, and the other end of the spring 37 is fixedly connected to the fixed frame 1. Two baffles 33 are fixedly connected to the surface of the rectangular frame 31. During the screening process, the rectangular frame 31 moves back and forth. The baffles 34 prevent the rectangular frame 31 from detaching from the fixed frame 1 during the movement. The bottom of the rectangular frame 31 is supported by the spring 37. When the screen 32 is reset, the pulling force output of the hydraulic cylinder 2 is reduced, thereby making the screen 32 run more stably. The two baffles 33 are located on both sides of the screen 32, and the two baffles 33 are fixedly connected to the collecting sleeve 54. The section of the collecting sleeve 54 located inside the two baffles 33 is in an open state. When the screen 32 screens sand, the baffles 33 will prevent sand from leaking out from both sides of the screen 32.
[0034] like Figures 4 to 6As shown, the adjustable support mechanism 4 is disposed on the surface of the fixed frame 1. The adjustable support mechanism 4 includes an adjusting toothed rod 403 and a support sleeve 405. The adjusting rod 36 and the support sleeve 405 are located below the fixed frame 1. The support sleeve 405 is slidably connected to the adjusting toothed rod 403 and is sleeved on the surface of the adjusting toothed rod 403. A rotating block 407 is rotatably connected to the surface of the support sleeve 405, and a locking pin 408 is fixedly connected to the surface of the rotating block 407. The locking pin 408 is adapted to the tooth groove size on the adjusting toothed rod 403. To ensure the mixing quality of concrete in construction projects, it is necessary to screen the auxiliary material sand to remove mud and sand. To ensure the quality of the mixed concrete, workers first need to adjust the screen 32 to an inclined angle so that the gravel and mud in the sand slide to the bottom of the screen 32 after screening, making it easy to clean and avoid accumulation. Workers then pull the fixed frame 1 at one end of the hydraulic cylinder 2. At this time, the adjusting rod 403 slides out from the support sleeve 405. Because the locking pin 408 is opposite to the locking groove of the adjusting rod 403, and the beveled surface of the locking pin 408 is opposite to the beveled surface below the locking groove, it is not necessary to engage the rotating block 407 when pulling the adjusting rod 403. The adjusting rod 403 can be continuously pulled, and the rotating block 407 automatically falls under gravity, causing the locking pin 408 to lock in the locking groove. When pulling stops, the locking pins 408 can be locked in the slots to fix the tilt angle of the screen 32. Two adapter blocks A401 are fixedly connected to the surface of the fixed frame 1, and support legs 404 are rotatably connected to the surface of adapter blocks A401. Two sliders 406 are slidably connected to the inner wall of the fixed frame 1, and adapter blocks B402 are fixedly connected to the surface of sliders 406. The adjusting gear 403 is fixedly connected to the adapter blocks B402. When the adjusting gear 403 is moved, because the adapter block B402 at one end of the adjusting gear 403 moves in an arc, the slider 406 moves along the groove, thus preventing the bottom support sleeve 405 from moving during adjustment. The surfaces of the two support legs 404 are fixedly connected to... Two support rods A410 and two support sleeves 405 are fixedly connected to two support rods B411. Two adjusting toothed rods 403 are fixedly connected to two support rods C412. By using multiple support rods for connection and fixation, the overall structure becomes more stable. Two telescopic rods 409 are fixedly connected to the surface of the support leg 404. The other end of the two telescopic rods 409 is fixedly connected to the support sleeve 405. Since the adapter block A401 and adapter block B402 can rotate with other connecting parts, the telescopic rods 409 are in a telescopic state when adjusting the angle of the screen 32. The telescopic rods 409 will support the support leg 404 and the support sleeve 405 to prevent the screening device from tipping over.
[0035] like Figures 2 to 3As shown, the collection mechanism 5 is set on the surface of the fixed frame 1. The collection mechanism 5 includes a collection sleeve 54, which is fixedly connected to the rectangular frame 31 and is located at the bottom of the screen 32 at an angle of 15 degrees. The collection sleeve 54 is inclined, and mud and gravel slide from the collection sleeve 54 to one end of the collection sleeve 54 and fall into the collection bucket 52 for easy collection and cleaning. A disc block 51 is fixedly connected to the surface of the fixed frame 1. The collection bucket 52 is detachably installed on the surface of the disc block 51. A hanging rod 53 is fixedly connected to the surface of the collection bucket 52, and the hanging rod 53 can be hung in the circular groove on the disc block 51. The discharge port of the collection sleeve 54 is located above the collection bucket 52. The screened gravel and mud will roll down the collection sleeve 54 into the collection bucket 52, which is convenient for workers to clean up.
[0036] like Figure 7 As shown, the feeding mechanism 6 is set on the surface of the fixed frame 1. The feeding mechanism 6 includes a hopper 62 and multiple feeding pipes 63. The hopper 62 is located above the screen 32. The hopper 62 is fixedly connected to the multiple feeding pipes 63. The worker pours the unscreened sand into the hopper 62. The sand is evenly sprinkled onto the screen 32 from the drop pipe below the hopper 62. Two fixed supports 61 are fixedly connected to the surface of the fixed frame 1. The two fixed supports 61 are rotatably connected to the hopper 62. Since the angle of the screen 32 needs to be adjusted, the hopper 62 will rotate during the adjustment of the screen 32, so that the hopper 62 is always in a vertical state, allowing the sand in the hopper 62 to flow out.
[0037] In this embodiment of the utility model, to ensure the mixing quality of concrete in construction projects, it is necessary to screen the auxiliary material sand to remove mud lumps and gravel, thus ensuring the molding quality of the mixed concrete. Workers first need to adjust the screen 32 to an inclined angle so that after screening, the gravel and mud lumps in the sand slide to the bottom of the screen 32, facilitating cleaning and preventing accumulation. Workers then pull the fixed frame 1 at one end of the hydraulic cylinder 2. At this time, the adjusting toothed rod 403 slides out from the support sleeve 405. Since the locking pin 408 is opposite to the locking groove of the adjusting toothed rod 403, and the inclined surface of the locking pin 408 is opposite to the inclined surface below the locking groove, it is not necessary to engage the rotating block 407 when pulling the adjusting toothed rod 403. The adjusting toothed rod 403 can be continuously pulled, and the rotating block 407 is subjected to… Gravity causes the locking pin 408 to lock into the slot. When pulling stops, the locking pin 408 remains in the slot, fixing the tilt angle of the screen 32. After adjusting the angle of the screen 32, the hydraulic cylinder 2 is activated to drive the screen 32 to slide back and forth. Workers pour unscreened sand into the hopper 62. The sand is evenly sprinkled onto the screen 32 from the drop pipe below the hopper 62. Driven by the hydraulic cylinder 2, the screen 32 moves back and forth, causing the screened mud and gravel to slide to the bottom of the screen 32. The screened sand falls below the screen 32 and into the collection sleeve 54. Because the collection sleeve 54 is tilted, the mud and gravel slide from one end of the collection sleeve 54 into the collection bucket 52 for easy collection and cleaning.
[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A sand screening device for construction engineering, characterized in that, include: Fixed frame (1); Hydraulic cylinder (2), which is fixedly connected to the inner wall of the fixed frame (1); Screening mechanism (3) is set on the surface of fixed frame (1). The screening mechanism (3) includes a rectangular frame (31) and a screen (32). The rectangular frame (31) slides on the inner wall of the fixed frame. The rectangular frame (31) and the screen (32) are fixedly connected, and the screen (32) is located on the inner wall of the rectangular frame (31). The rectangular frame (31) is fixedly connected to the output end of the hydraulic cylinder (2). An adjustable support mechanism (4) is provided on the surface of a fixed frame (1). The adjustable support mechanism (4) includes an adjusting rack (403) and a support sleeve (405). The adjusting support rod (36) and the support sleeve (405) are located below the fixed frame (1). The support sleeve (405) is slidably connected to the adjusting rack (403) and is sleeved on the surface of the adjusting rack (403). A rotating block (407) is rotatably connected to the surface of the support sleeve (405). A locking pin (408) is fixedly connected to the surface of the rotating block (407) and the locking pin (408) is adapted to the tooth groove size on the adjusting rack (403). A collection mechanism (5) is provided on the surface of a fixed frame (1). The collection mechanism (5) includes a collection sleeve (54), which is fixedly connected to a rectangular frame (31) and is located at the bottom of a screen (32) at an angle of 15 degrees. The feeding mechanism (6) is disposed on the surface of the fixed frame (1). The feeding mechanism (6) includes a hopper (62) and a plurality of feeding pipes (63). The hopper (62) is located above the screen (32). The hopper (62) is fixedly connected to the plurality of feeding pipes (63).
2. The sand screening equipment for construction engineering according to claim 1, characterized in that, The surface of the fixed frame (1) is fixedly connected with multiple limiting blocks (35), the surface of the rectangular frame (31) is fixedly connected with two support rods (36), the end of the support rod (36) is fixedly connected with a stop block (34), the arc surface of the support rod (36) is fitted with a spring (37), one end of the spring (37) is fixedly connected to the rectangular frame (31), the other end of the spring (37) is fixedly connected to the fixed frame (1), and the surface of the rectangular frame (31) is fixedly connected with two baffles (33).
3. The sand screening equipment for construction engineering according to claim 1, characterized in that, Two adapter blocks A (401) are fixedly connected to the surface of the fixed frame (1). Support legs (404) are rotatably connected to the surface of the adapter block A (401). Two sliders (406) are slidably connected to the inner wall of the fixed frame (1). Adapter block B (402) is fixedly connected to the surface of the slider (406). The adjusting gear rod (403) is fixedly connected to the adapter block B (402).
4. The sand screening equipment for construction engineering according to claim 1, characterized in that, A disc block (51) is fixedly connected to the surface of the fixed frame (1). A collection bucket (52) is detachably installed on the surface of the disc block (51). A hanging rod (53) is fixedly connected to the surface of the collection bucket (52). The hanging rod (53) can be hung in the circular groove on the disc block (51). The discharge port of the collection sleeve (54) is located above the collection bucket (52).
5. A sand screening device for construction engineering according to claim 1, characterized in that, The surface of the fixed frame (1) is fixedly connected to two fixed brackets (61), and the two fixed brackets (61) are rotatably connected to the hopper (62).
6. A sand screening device for construction engineering according to claim 2, characterized in that, The two baffles (33) are located on both sides of the screen (32), and the two baffles (33) are fixedly connected to the collecting sleeve (54), and the section of the collecting sleeve (54) located inside the two baffles (33) is open.
7. A sand screening device for construction engineering according to claim 3, characterized in that, Two support rods A (410) are fixedly connected to the surfaces of the two support legs (404), two support rods B (411) are fixedly connected to the surfaces of the two support sleeves (405), and two support rods C (412) are fixedly connected to the surfaces of the two adjusting gears (403).
8. A sand screening device for construction engineering according to claim 3, characterized in that, Two telescopic rods (409) are fixedly connected to the surface of the support leg (404), and the other ends of the two telescopic rods (409) are fixedly connected to the support sleeve (405).