Sandstone screening dust suppression device
By introducing air blowing and dust suppression components into the sand and gravel screening device, and using brush parts and water seat structure to capture dust, the problem of fine aggregate loss is solved, and efficient dust reduction and resource utilization are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA LIAOHE ENG BUREAU CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-19
AI Technical Summary
In existing sand and gravel screening devices, fine aggregates are easily washed away and lost during dust suppression, resulting in material waste and increased production costs.
The dust generated during screening is guided into the dust suppression component by a blowing component for dust reduction. Combined with the brush component driven by the servo motor and the water seat structure, the dust is captured and removed to prevent the loss of fine aggregate.
It effectively reduces dust pollution, improves resource utilization and clean production levels, and avoids the problem of fine aggregate loss caused by traditional spray dust suppression.
Smart Images
Figure CN224372026U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dust suppression devices, and in particular to a sand and gravel screening dust suppression device. Background Technology
[0002] In mining, construction, and road building, sand and gravel screening is an indispensable and important process. During the screening process, factors such as material vibration, throwing, and air flow can generate a large amount of dust. This dust not only seriously pollutes the working environment and endangers the health of operators, easily causing occupational diseases such as pneumoconiosis, but also pollutes the surrounding atmospheric environment and exacerbates environmental problems such as smog.
[0003] Based on particle size and usage requirements, sand and gravel aggregates can be clearly divided into two major categories: coarse aggregates and fine aggregates. Coarse aggregates are mainly used to construct the concrete skeleton, while fine aggregates (sand) with a particle size of less than 4.75mm play an irreplaceable role in filling voids and improving the workability of concrete due to their fine characteristics.
[0004] Existing sand and gravel screening equipment typically employs a spray dust suppression process, which can effectively reduce dust concentration and improve the working environment. However, it has revealed significant drawbacks in practical applications. Due to the small particle size and light weight of fine aggregates, they are easily detached from the main material body under the impact of high-pressure spray water flow and washed away with the water flow. This phenomenon results in the waste of valuable materials and increases production costs. Utility Model Content
[0005] The main purpose of this utility model is to provide a sand and gravel screening and dust suppression device, which can effectively solve the problems mentioned above.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A sand and gravel screening dust suppression device includes a screening base and two fixed frames. The two fixed frames are symmetrically fixed on both sides of the bottom end of the screening base. A screening component is provided inside the screening base. A blowing component is provided on the top of the screening base. A feeding port is provided through the top of the screening base. An automatic spring door is installed inside the feeding port. The dust suppression component is connected to the screening base.
[0008] Preferably, the blowing assembly includes a blower box, which is installed through the top of the screening base, and a blower is installed at the top of the blower box. Multiple guide shrouds are provided on one end of the blower box that extends into the screening base.
[0009] Preferably, the dust suppression component includes a water seat, which is fixedly connected to the back end of the sand and gravel screening seat. Multiple air inlet slots are equidistantly opened on the end face of the water seat near the screening seat, and a servo motor is fixedly connected to the end of the water seat away from the screening seat.
[0010] Preferably, an arc plate is fixedly connected to the upper side of the inner cavity of the water seat, the arc plate divides the inner cavity of the water seat into upper and lower parts, multiple air outlets are equidistantly installed through the rear end of the upper inner cavity of the water seat, multiple filter screens are fixedly connected to the inner cavity of the multiple air outlets by snap fasteners, and a liquid supply port is installed through the front end of the upper inner cavity of the water seat.
[0011] Preferably, the dust suppression assembly further includes a drive rod driven by the output shaft of a servo motor. The drive rod passes through the lower inner cavity of the water seat and extends into the screening seat. Multiple wheel plates are fixedly installed at equal intervals on the middle of the outer surface of the drive rod, and multiple brush pieces are glued to the outer surfaces of the multiple wheel plates.
[0012] Preferably, the screening assembly includes a screen plate, a discharge port, a fine aggregate discharge port, an elliptical wheel, and two blocking plates. The screen plate is opened through the lower front end of the sand and gravel screening seat. The elliptical wheel is coaxially fixedly connected to one end of the drive rod extending into the screening seat. The two blocking plates are symmetrically installed on both sides of the screening seat away from the center. The discharge port is hinged to the front side of the inner cavity of the screening seat. The fine aggregate discharge port is opened through the middle of the bottom end of the inner cavity of the screening seat.
[0013] Preferably, a connector that is in contact with the outer surface of the elliptical wheel is fixedly connected to the rear side of the bottom end of the discharge port, a rotating rod is rotatably connected between the two blocking plates, a auger blade that rolls and contacts the lower side of the inner cavity surface of the screening seat is fixedly connected to the outer surface of the rotating rod, two pulleys are respectively sleeved on the outer surface of the rotating rod and the driving rod, and a transmission belt is connected between the two pulleys.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] In this invention, the dust generated during screening in the screening seat is blown into the dust suppression component by the blowing component for dust reduction. The blowing component and the dust suppression component work together to effectively avoid the problem of fine aggregate loss caused by traditional spray dust reduction, and significantly improve the resource utilization rate and clean production level of the sand and gravel treatment system.
[0016] In this invention, a screening component is used to screen sand and gravel aggregates. During screening, the screening component drives the dust suppression component to work together, thereby improving the equipment's overall operating rate. Attached Figure Description
[0017] Figure 1This is a schematic diagram of the overall structure of the present invention.
[0018] Figure 2 This is a cross-sectional structural diagram of the screening seat in this utility model;
[0019] Figure 3 This is a cross-sectional structural diagram of the screening component and the blowing component in this utility model;
[0020] Figure 4 This utility model Figure 3 Enlarged view of node A in the middle;
[0021] Figure 5 This is a cross-sectional structural diagram of the dust suppression component in this utility model.
[0022] In the diagram: 1. Screening base; 2. Fixing frame; 3. Screening assembly; 31. Screen plate; 32. Discharge port; 33. Fine aggregate discharge port; 34. Blocking plate; 35. Rotating rod; 351. Auger blade; 36. Elliptical wheel; 361. Connecting piece; 37. Pulley; 371. Drive belt; 4. Feeding port; 41. Automatic spring door; 5. Blowing assembly; 51. Air box; 52. Blower; 53. Flow guide; 6. Dust suppression assembly; 61. Water seat; 611. Air inlet; 62. Liquid supply port; 63. Air outlet; 631. Filter screen; 64. Arc plate; 65. Servo motor; 66. Drive rod; 67. Wheel plate; 671. Brush. Detailed Implementation
[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0024] like Figures 1-5 As shown, it includes a screening base 1 and two fixed frames 2. The two fixed frames 2 are symmetrically fixed on both sides of the bottom end of the screening base 1. A screening component 3 is provided inside the screening base 1. A blowing component 5 is provided on the top of the screening base 1. A feeding port 4 is provided through the top of the screening base 1. An automatic spring door 41 is installed inside the feeding port 4. A dust suppression component 6 is connected to the screening base 1.
[0025] In practical application, the aggregate is poured into the screening seat 1 from the feed port 4. The sand and gravel aggregate is screened by the screening component 3. The dust generated by the screening component 3 in the screening seat 1 is blown into the dust suppression component 6 by the blowing component 5 for dust suppression. The blowing component 5 and the dust suppression component 6 work together to effectively avoid the problem of fine aggregate loss caused by traditional spray dust suppression during the dust suppression process.
[0026] Specifically, the blowing assembly 5 includes a blower box 51, which is installed through the top of the screening base 1. A blower 52 is installed at the top of the blower box 51, and multiple guide shrouds 53 are provided on one end of the blower box 51 that extends into the screening base 1.
[0027] External air is drawn into the air box 51 by the blower 52, and then the air is guided and sprayed into the screening seat 1 by multiple guide hoods 53 at the bottom of the air box 51. The nozzles of the guide hoods 53 are located on the side facing the dust suppression component 6. When the guide hoods 53 spray air into the screening seat 1, the airflow can blow the dust in the screening seat 1 into the dust suppression component 6 for dust suppression treatment.
[0028] Furthermore, the dust suppression component 6 includes a water seat 61, which is fixedly connected to the back end of the sand and gravel screening seat 1. Multiple air inlet slots 611 are equidistantly opened on the end face of the water seat 61 near the screening seat 1. A servo motor 65 is fixedly connected to the end of the water seat 61 away from the screening seat 1.
[0029] An arc plate 64 is fixedly connected to the upper side of the inner cavity of the water seat 61. The arc plate 64 divides the water seat 61 into upper and lower parts. Multiple air outlets 63 are installed at equal intervals through the rear end of the upper inner cavity of the water seat 61. Multiple filters 631 are fixedly connected to the inner cavity of the multiple air outlets 63 by snaps. A liquid supply port 62 is installed through the front end of the upper inner cavity of the water seat 61.
[0030] The dust suppression component 6 also includes a drive rod 66 driven by the output shaft of a servo motor 65. The drive rod 66 passes through the lower inner cavity of the water seat 61 and extends into the screening seat 1. Multiple wheel plates 67 are fixedly installed at equal intervals on the middle of the outer surface of the drive rod 66. Multiple brush pieces 671 are glued to the outer surfaces of the multiple wheel plates 67.
[0031] Before using the dust suppression component 6 to reduce dust, water needs to be added to the water base 61 through the liquid supply port 62. The highest water level in the water base 61 must not exceed the lowest air inlet groove 611.
[0032] When the dust is blown into the water base 61, the servo motor 65 is started. The output shaft of the servo motor 65 drives the drive rod 66 to rotate, which in turn causes the brush pieces 671 on the multiple wheel plates 67 on the outer surface of the drive rod 66 to rotate. During the rotation of the brush pieces 671, their surfaces become wet and have the ability to adsorb dust. Thus, the rotating brush pieces 671 can effectively capture the dust that enters the water base 61.
[0033] As the wheel plate 67 drives the brush 671 to rotate, when the brush 671 is submerged in water, the water in the water seat 61 will wash away the dust adsorbed on the outer surface of the brush 671, thus avoiding a large amount of dust accumulating on the outer surface of the brush 671 and affecting its dust-capturing effect.
[0034] Specifically, the screening assembly 3 includes a screen plate 31, a discharge port 32, a fine aggregate discharge port 33, an elliptical wheel 36, and two blocking plates 34. The screen plate 31 is opened through the lower front end of the sand and gravel screening base 1. The elliptical wheel 36 is coaxially fixedly connected to one end of the drive rod 66 that extends into the screening base 1. The two blocking plates 34 are symmetrically installed on both sides of the screening base 1 away from the center. The discharge port 32 is hinged to the front side of the inner cavity of the screening base 1. The fine aggregate discharge port 33 is opened through the middle of the bottom end of the inner cavity of the screening base 1.
[0035] A connecting piece 361 that is in contact with the outer surface of the elliptical wheel 36 is fixedly connected to the rear side of the bottom end of the discharge port 32. A rotating rod 35 is rotatably connected between the two blocking plates 34. A auger blade 351 that rolls and contacts the lower side of the inner cavity surface of the screening seat 1 is fixedly connected to the outer surface of the rotating rod 35. Two pulleys 37 are respectively sleeved on the outer surfaces of the rotating rod 35 and the drive rod 66. A transmission belt 371 is connected between the two pulleys 37.
[0036] After the sand and gravel aggregate is poured into the screening seat 1 through the feeding port 4, the sand and gravel aggregate will fall on the screen plate 31. During the process of the servo motor 65 driving the drive rod 66 to rotate, the drive rod 66 drives the rear side of the screen plate 31 to move up and down through the elliptical wheel 36 and the connecting piece 361. In this way, the screen plate 31 screens the sand and gravel aggregate while bumping.
[0037] Coarser aggregates that cannot pass through the filter holes on the screen plate 31 will slide out in the designated direction through the discharge port 32 along the inclined angle of the screen plate 31, while fine aggregates that can pass through the filter holes of the screen plate 31 will be discharged from the fine aggregate discharge port 33 to the designated place.
[0038] The discharge port in this solution is equipped with an air curtain, which is a feature of existing technology. The air curtain can prevent the airflow blown out by the blower from dissipating outward on a large scale.
[0039] To prevent fine aggregate from accumulating inside the screening seat 1 and being unable to be discharged through the fine aggregate outlet 33, when the drive rod 66 rotates, the rotating rod 35, together with the auger blade 351 on its surface, is driven to rotate through two pulleys 37 and the transmission belt 371. With the rotation of the auger blade 351, the fine aggregate is prevented from accumulating at the bottom of the inner cavity of the screening seat 1, thus ensuring the efficiency of the fine aggregate discharge port 33 in discharging fine aggregate.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A sand and stone screening and dust suppression device, comprising a screening seat (1) and two fixing frames (2), characterized in that: Two fixed frames (2) are symmetrically fixed on both sides of the bottom of the screening seat (1). A screening component (3) is provided inside the screening seat (1). A blowing component (5) is provided on the top of the screening seat (1). A feeding port (4) is opened through the top of the screening seat (1). An automatic spring door (41) is installed inside the feeding port (4). A dust suppression component (6) is connected to the screening seat (1).
2. The sand and stone screening and dust suppression device according to claim 1, characterized in that: The blowing assembly (5) includes a blower box (51), which is installed through the top of the screening seat (1). A blower (52) is installed at the top of the blower box (51), and a plurality of guide shrouds (53) are provided on one end of the blower box (51) that extends into the screening seat (1).
3. A sand and stone screening dust suppression device according to claim 2, characterized in that: The dust suppression component (6) includes a water seat (61), which is fixedly connected to the back end of the sand and gravel screening seat (1). Multiple air inlet slots (611) are equidistantly opened on the end face of the water seat (61) near the screening seat (1). A servo motor (65) is fixedly connected to the end of the water seat (61) away from the screening seat (1).
4. The sand and stone screening and dust suppression device according to claim 3, characterized in that: An arc plate (64) is fixedly connected to the upper side of the inner cavity of the water seat (61). The arc plate (64) divides the water seat (61) into upper and lower parts. Multiple air outlets (63) are installed through the rear end of the upper inner cavity of the water seat (61) at equal intervals. Multiple filter screens (631) are fixedly connected to the inner cavity of the multiple air outlets (63) by snap fasteners. A liquid supply port (62) is installed through the front end of the upper inner cavity of the water seat (61).
5. The sand and stone screening and dust suppression device according to claim 3, characterized in that: The dust suppression component (6) also includes a drive rod (66) driven by the output shaft of a servo motor (65). The drive rod (66) passes through the lower inner cavity of the water seat (61) and extends into the screening seat (1). Multiple wheel plates (67) are fixedly installed at equal intervals on the middle of the outer surface of the drive rod (66). Multiple brush pieces (671) are glued together on the outer surfaces of the multiple wheel plates (67).
6. A sand and stone screening and dust suppression device according to claim 5, characterized in that: The screening assembly (3) includes a screen plate (31), a discharge port (32), a fine aggregate discharge port (33), an elliptical wheel (36), and two blocking plates (34). The screen plate (31) is opened through the lower front end of the sand and gravel screening seat (1). The elliptical wheel (36) is coaxially fixedly connected to one end of the drive rod (66) extending into the screening seat (1). The two blocking plates (34) are symmetrically installed on both sides of the screening seat (1) away from the center. The discharge port (32) is hinged to the front side of the inner cavity of the screening seat (1). The fine aggregate discharge port (33) is opened through the middle of the bottom end of the inner cavity of the screening seat (1).
7. A sand and stone screening and dust suppression device according to claim 6, characterized in that: The discharge port (32) is fixedly connected to the rear side of the bottom end of the connector (361) and is in contact with the outer surface of the elliptical wheel (36). A rotating rod (35) is rotatably connected between the two blocking plates (34). A dragon blade (351) is fixedly connected to the outer surface of the rotating rod (35) and is in rolling contact with the lower side of the inner cavity surface of the screening seat (1). Two pulleys (37) are respectively sleeved on the outer surfaces of the rotating rod (35) and the driving rod (66). A transmission belt (371) is connected between the two pulleys (37).