Gravel material grading screening device for concrete preparation
By introducing adjustment and cleaning structures into the grading screening device of sand and gravel materials, the problem of sand and gravel materials retention caused by the fixed screen angle is solved, and the discharge speed and working efficiency are improved.
Patent Information
- Application Number
- CN202420109012.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-17
AI Technical Summary
In the existing grading screening devices for sand and gravel materials, the fixed screen angle causes the slow discharge speed of sand and gravel materials, which is prone to retention or accumulation of sand and gravel materials, affecting the normal operation of the grading screening device.
A concrete-prepared sand and gravel grading screening device is designed, which includes an adjustment structure and a cleaning structure. The rotating rod and gear system are driven by the motor to adjust the angle of the screen, and the sand and gravel on the screen is cleaned through a spiral groove and a cleaning brush to avoid accumulation.
By adjusting the screen angle and cleaning structure, the discharge speed of sand and gravel is improved, the retention and accumulation of sand and gravel is avoided, and the working efficiency of the grading screening device is improved.
Smart Images
Figure CN222132609U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete preparation, in particular to a grading and screening device for sand and gravel materials in concrete preparation. Background Art
[0002] Concrete preparation technology mainly includes the calculation of concrete strength and concrete mixing, which is an important link in concrete engineering. The preparation work before construction is a very important factor in the success of concrete preparation. Construction preparation includes material preparation, machinery preparation and inspection of working conditions.
[0003] Screening is a method of separating particle groups according to their powder properties such as particle size, specific gravity, charge and magnetism. The operation of using a perforated screen to separate mixed materials of different particle sizes into various particle size grades is called screening. In the process of concrete preparation, a graded screening device is needed to screen sand and gravel.
[0004] At present, the existing gravel grading and screening devices on the market have a fixed and relatively flat screen angle when screening sand and gravel. The fixed screen angle will lead to a slower discharge speed of the sand and gravel, resulting in sand and gravel being retained or accumulated on the screen during discharge, thereby affecting the normal operation of the grading and screening device. Summary of the invention
[0005] The purpose of the utility model is to provide a grading and screening device for sand and gravel materials in concrete preparation, so as to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a concrete preparation sand and gravel grading and screening device, comprising a main body, the inner wall of the main body is attached with a large-hole screen, the inner wall of the main body is attached with a small-hole screen, the interior of the main body is provided with an adjustment structure, the interior of the main body is provided with a cleaning structure, and the adjustment structure includes:
[0007] The motor is fixedly connected to the outer wall of the main body, and the main body plays a fixing role on the motor, thereby preventing the motor from falling from mid-air. The output end of the motor is fixedly connected to a rotating rod, and the motor can drive the rotating rod to rotate. The outer wall of the rotating rod is fixedly connected to an adjusting gear, and the rotating rod plays a fixing role on the adjusting gear.
[0008] Auxiliary shaft, the outer wall of the main body is penetrated by the auxiliary shaft and is rotatably connected to the penetration point of the auxiliary shaft, the main body supports the auxiliary shaft, the side wall of the large-pore screen is penetrated by the auxiliary shaft and is fixedly connected to the penetration point of the auxiliary shaft, the outer wall of the auxiliary shaft is fixedly connected with a reduction gear, the auxiliary shaft fixes the reduction gear, and the outer wall of the reduction gear meshes with the adjustment gear;
[0009] Auxiliary gear, the outer wall of the auxiliary shaft is fixedly connected with the auxiliary gear, the auxiliary shaft fixes the auxiliary gear, the outer wall of the auxiliary gear is meshed with a gear belt, the inner wall of the main body is rotatably connected with the driven shaft, the main body supports the driven shaft, the outer wall of the driven shaft is fixedly connected with the driven gear, the driven shaft fixes the driven gear, the end of the gear belt away from the auxiliary gear is meshed with the driven gear, the outer wall of the driven shaft passes through the small hole screen and is fixedly connected to the penetration point of the small hole screen.
[0010] Preferably, the cleaning structure comprises: a slide groove, and the slide groove is provided on the top surface inside the main body.
[0011] Preferably, a protrusion is slidably connected to the inner wall of the slide groove, and the slide groove has a fixing effect on the moving trajectory of the protrusion.
[0012] Preferably, a spiral groove is formed on the outer wall of the rotating rod.
[0013] Preferably, the inner wall of the spiral groove fits the protrusion, and when the rotating rod rotates, the protrusion will slide along the inner wall of the sliding groove driven by the spiral groove.
[0014] Preferably, the protrusion passes through the cleaning brush and is fixedly connected to the penetration point of the cleaning brush. The cleaning brush will move with the movement of the protrusion. The brush surface of the cleaning brush fits the large-hole screen. The movement of the cleaning brush can clean the sand and gravel accumulated on the large-hole screen. The brush surface of the cleaning brush fits the small-hole screen. The movement of the cleaning brush can clean the sand and gravel accumulated on the small-hole screen.
[0015] Compared with the prior art, the utility model provides a grading and screening device for sand and gravel in concrete preparation, which has the following beneficial effects:
[0016] 1. The concrete preparation sand and gravel grading and screening device is provided with an adjustment structure, through which the angles of the large-hole screen and the small-hole screen in the vertical direction can be adjusted, so that the user can adjust the discharging speed of the grading and screening device according to his own needs, and at the same time avoid the situation where the sand and gravel are retained or accumulated on the screen when discharging, thereby improving the working efficiency of the grading and screening device.
[0017] 2. The gravel grading and screening device for preparing concrete is provided with a cleaning structure. When the cleaning structure adjusts the vertical angles of the large-hole screen and the small-hole screen, the gravel accumulated on the large-hole screen and the small-hole screen can be cleaned by moving the cleaning brush, thereby further avoiding the situation where the gravel is retained or accumulated on the screen when the gravel is discharged. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the utility model;
[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the utility model;
[0020] Figure 3 For this utility model Figure 2 A magnified schematic diagram of the inner A structure;
[0021] Figure 4 For this utility model Figure 2 A magnified schematic diagram of the inner B structure;
[0022] Figure 5 For this utility model Figure 1 Enlarged schematic diagram of the inner C structure.
[0023] In the figure: 1. main body; 2. large-hole screen; 3. small-hole screen; 4. adjustment structure; 41. motor; 42. rotating rod; 43. adjustment gear; 44. reduction gear; 45. auxiliary shaft; 46. auxiliary gear; 47. gear belt; 48. driven gear; 49. driven shaft; 5. cleaning structure; 52. spiral groove; 53. bump; 54. cleaning brush; 55. slide groove. DETAILED DESCRIPTION
[0024] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a grading and screening device for preparing sand and gravel from concrete, comprising a main body 1, a large-hole screen 2 is attached to the inner wall of the main body 1, a small-hole screen 3 is attached to the inner wall of the main body 1, the small-hole screen 3 is located below the large-hole screen 2, thereby realizing multi-stage screening, an adjusting structure 4 is provided inside the main body 1, and a cleaning structure 5 is provided inside the main body 1.
[0025] The adjustment structure 4 includes: a motor 41, a rotating rod 42, an adjustment gear 43, a reduction gear 44, an auxiliary shaft 45, an auxiliary gear 46, a gear belt 47, a driven gear 48, and a driven shaft 49. The outer wall of the main body 1 is fixedly connected with the motor 41, and the main body 1 plays a fixing role on the motor 41. The motor 41 has a self-locking function, and the motor 41 can be rotated forward and reversely. The output end of the motor 41 is fixedly connected with the rotating rod 42, and the motor 41 can drive the rotating rod 42 to rotate. The outer wall of the rotating rod 42 is fixedly connected with the adjustment gear 43, and the rotating rod 42 plays a fixing role on the adjustment gear 43. The adjustment gear 43 will rotate with the rotation of the rotating rod 42. The outer wall of the main body 1 is penetrated by the auxiliary shaft 45 and connected with the auxiliary shaft 4 5 is rotatably connected, the main body 1 supports the auxiliary shaft 45, the side wall of the large-pore screen 2 is penetrated by the auxiliary shaft 45 and is fixedly connected to the penetration of the auxiliary shaft 45, the large-pore screen 2 will rotate with the auxiliary shaft 45 as the center of the circle, the outer wall of the auxiliary shaft 45 is fixedly connected with the reduction gear 44, the auxiliary shaft 45 plays a fixing role on the reduction gear 44, the auxiliary shaft 45 rotates the rotation of the reduction gear 44, the outer wall of the reduction gear 44 meshes with the adjustment gear 43, through the reduction gear 44 The motor 41 cooperates with the adjusting gear 43 so that when the rotating rod 42 is rotated one circle by the motor 41, the reduction gear 44 will only drive the auxiliary shaft 45 to rotate a small circle. The outer wall of the auxiliary shaft 45 is fixedly connected with an auxiliary gear 46. The auxiliary shaft 45 plays a fixing role on the auxiliary gear 46. The outer wall of the auxiliary gear 46 is meshed with a gear belt 47. Through the meshing of the auxiliary gear 46 and the gear belt 47, it can be prevented that the gear belt 47 falls off the auxiliary gear 46 when the main body 1 shakes. At the same time, the gear belt 47 will move with the auxiliary gear 46. The rotation drives the driven gear 48 to rotate, and the inner wall of the main body 1 is rotatably connected to the driven shaft 49. The main body 1 supports the driven shaft 49. The outer wall of the driven shaft 49 is fixedly connected to the driven gear 48. The driven shaft 49 fixes the driven gear 48. The driven gear 48 is meshed with the end of the gear belt 47 away from the auxiliary gear 46. The outer wall of the driven shaft 49 passes through the small-hole screen 3 and is fixedly connected to the penetration point of the small-hole screen 3. The small-hole screen 3 will rotate with the driven shaft 49 as the center as the rotation of the driven shaft 49.
[0026] The cleaning structure 5 includes: a spiral groove 52, a protrusion 53, a cleaning brush 54, and a chute 55. The top surface of the interior of the main body 1 is provided with a chute 55, and the inner wall of the chute 55 is slidably connected with the protrusion 53, and the chute 55 plays a fixing role in the moving trajectory of the protrusion 53. The outer wall of the rotating rod 42 is provided with a spiral groove 52, and the inner wall of the spiral groove 52 fits the protrusion 53. When the rotating rod 42 rotates, the protrusion 53 will slide along the inner wall of the chute 55 due to the drive of the spiral groove 52. The protrusion 53 penetrates the cleaning brush 54 and is fixedly connected to the penetration of the cleaning brush 54. The cleaning brush 54 will move with the movement of the protrusion 53. The brush surface of the cleaning brush 54 fits the large-pore screen 2. The movement of the cleaning brush 54 can clean the sand and gravel accumulated on the large-pore screen 2. The brush surface of the cleaning brush 54 fits the small-pore screen 3. The movement of the cleaning brush 54 can clean the sand and gravel accumulated on the small-pore screen 3.
[0027] Working principle: The motor 41 drives the rotating rod 42 to rotate, and the adjusting gear 43 rotates with the rotation of the rotating rod 42. The reduction gear 44 rotates with the rotation of the adjusting gear 43, and then the auxiliary shaft 45 is driven to rotate by the rotation of the reduction gear 44. At this time, the large-hole screen 2 rotates in a circle with the auxiliary shaft 45 as the center, and then the angle of the large-hole screen 2 is adjusted. At this time, the auxiliary gear 46 rotates with the rotation of the auxiliary shaft 45, and then the gear belt 47 is driven by the rotation of the auxiliary gear 46 to transmit, so that the driven The gear 48 rotates with the transmission of the gear belt 47, and the driven shaft 49 rotates with the rotation of the driven gear 48. The small-hole screen 3 moves in a circle with the driven shaft 49 as the center as the rotation of the driven shaft 49, thereby adjusting the angle of the small-hole screen 3, and then adjusting the angles of the large-hole screen 2 and the small-hole screen 3, so that the user can adjust the discharge speed of the grading screening device according to his own needs, and at the same time avoid the situation where sand and gravel are retained or accumulated on the large-hole screen 2 or the small-hole screen 3 during discharge, thereby improving the working efficiency of the grading screening device.
[0028] At the same time, when the rotating rod 42 rotates, the spiral groove 52 will rotate with the rotation of the rotating rod 42, so that the protrusion 53 will slide along the inner wall of the slide groove 55 with the rotation of the spiral groove 52. At this time, the cleaning brush 54 will move with the movement of the protrusion 53, and the sand and gravel accumulated on the large-hole screen 2 and the small-hole screen 3 will be cleaned by the movement of the cleaning brush 54, thereby avoiding the blockage of the large-hole screen 2 and the small-hole screen 3.
[0029] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A device for grading and screening sand and gravel for preparing concrete, comprising a main body (1), characterized in that: The inner wall of the main body (1) is bonded with a large-pore screen (2), the inner wall of the main body (1) is bonded with a small-pore screen (3), an adjustment structure (4) is provided inside the main body (1), and a cleaning structure (5) is provided inside the main body (1), and the adjustment structure (4) comprises: A motor (41), wherein the outer wall of the main body (1) is fixedly connected to the motor (41), the output end of the motor (41) is fixedly connected to a rotating rod (42), and the outer wall of the rotating rod (42) is fixedly connected to an adjusting gear (43); An auxiliary shaft (45), the outer wall of the main body (1) penetrates the auxiliary shaft (45) and is rotatably connected to the penetration point of the auxiliary shaft (45), the side wall of the large-pore screen (2) penetrates the auxiliary shaft (45) and is fixedly connected to the penetration point of the auxiliary shaft (45), the outer wall of the auxiliary shaft (45) is fixedly connected to a reduction gear (44), and the outer wall of the reduction gear (44) meshes with the adjustment gear (43); An auxiliary gear (46), the outer wall of the auxiliary shaft (45) is fixedly connected to the auxiliary gear (46), the outer wall of the auxiliary gear (46) is meshed with a gear belt (47), the inner wall of the main body (1) is rotatably connected to a driven shaft (49), the outer wall of the driven shaft (49) is fixedly connected to a driven gear (48), one end of the gear belt (47) away from the auxiliary gear (46) is meshed with the driven gear (48), and the outer wall of the driven shaft (49) passes through the small-hole screen (3) and is fixedly connected to the penetration point of the small-hole screen (3).
2. The device for grading and screening sand and gravel for preparing concrete according to claim 1, characterized in that: The cleaning structure (5) comprises a slide groove (55), and the slide groove (55) is provided on the top surface inside the main body (1).
3. The device for grading and screening sand and gravel for preparing concrete according to claim 2, characterized in that: A protrusion (53) is slidably connected to the inner wall of the sliding groove (55).
4. The device for grading and screening sand and gravel for preparing concrete according to claim 1, characterized in that: The outer wall of the rotating rod (42) is provided with a spiral groove (52).
5. The device for grading and screening sand and gravel for preparing concrete according to claim 4, characterized in that: The inner wall of the spiral groove (52) is fitted with a protrusion (53).
6. The device for grading and screening sand and gravel for preparing concrete according to claim 3, characterized in that: The protrusion (53) penetrates the cleaning brush (54) and is fixedly connected to the penetration point of the cleaning brush (54); the brush surface of the cleaning brush (54) fits the large-pore screen (2); and the brush surface of the cleaning brush (54) fits the small-pore screen (3) 2.