Gravel screening device
By designing a sand and gravel screening device containing a moving mechanism, it automatically drives the filter screen to slide, and solves the problem of low screening efficiency caused by sand and gravel jams, achieving efficient screening and convenient cleaning, and improving the efficiency and practicality of the device.
Patent Information
- Application Number
- CN202421758657.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-24
AI Technical Summary
During the filtration process of existing building sand and gravel screening devices, sand and gravel are prone to get stuck on the upper side of the filter, resulting in a decrease in screening efficiency and manpower to shake the filter, which is time-consuming and labor-intensive and inconvenient to use.
A sand and gravel screening device is designed, including a moving mechanism. Through the cooperation of the rotating shaft, rotating blades, cams and fixing frame, the filter screen is automatically driven to slide forward and backward in the sliding groove to avoid sand and gravel accumulation and improve screening efficiency.
It realizes automatic shaking of the filter net during the sand and gravel screening process to avoid sand and gravel accumulation, improves screening efficiency, and through the design of the door opening and closing, it is convenient to clean large-grain sand and gravel on the filter net, improving the practicality of the device.
Smart Images
Figure CN222890128U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fine screening, coarse screening, screening or sorting of solid materials using nets, filter screens, grilles or other similar tools, in particular to a sand and gravel screening device. Background Art
[0002] Sand and gravel are materials used in combination with cement in the field of building materials. The construction of large buildings generally requires a large amount of refined sand and gravel. Ordinary sand and gravel are difficult to meet the requirements. Therefore, it is generally necessary to screen and select the purchased sand and gravel. A screening device is used when screening the sand and gravel. When the existing construction sand and gravel screening device is used, when filtering the sand and gravel, some sand and gravel will be stuck on the upper side of the filter screen, resulting in the sand and gravel being unable to be screened normally, thereby affecting the filtering efficiency of the sand and gravel. At this time, manpower is required to shake the filter screen, which is time-consuming and labor-intensive and inconvenient to use. Utility Model Content
[0003] 1. Technical issues to be resolved
[0004] In view of the shortcomings of the prior art, the utility model provides a sand and gravel screening device, which has the function of automatically shaking the filter screen during the screening process of sand and gravel, thereby avoiding excessive accumulation of sand and gravel on the filter screen which affects the screening effect, thereby improving the screening efficiency of the screening device.
[0005] (II) Technical solution
[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sand and gravel screening device, comprising a base, a support leg is fixedly connected to the lower side of the base, and a collection trough is integrally formed inside the base;
[0007] The upper side of the base is integrally formed with a sliding groove connected to the collecting groove, and a filter screen is slidably connected inside the sliding groove;
[0008] The upper side of the base is fixedly connected with a screening box, and the upper side of the screening box is integrally formed with a feed port connected to the interior, and the feed port is arranged at the rear side;
[0009] Among them, a motion mechanism is arranged inside the screening box, which can automatically drive the filter screen to slide back and forth during the screening process;
[0010] The motion mechanism includes a rotating shaft, rotating blades, two cams and two fixed frames.
[0011] Preferably, the bottom wall of the aggregate trough is inclined with the front lower and the back higher, so that the sand and gravel after screening can be discharged more conveniently;
[0012] Among them, a discharge port connected to the collecting trough is integrally formed on the front side of the base.
[0013] Preferably, the rotating shaft is rotatably connected to the interior of the screening box, and the rotating blades are fixedly connected to the outer surface of the rotating shaft;
[0014] Wherein, the two cams are fixedly sleeved on the outer surface of the rotating shaft.
[0015] Preferably, the two cams are respectively arranged on the left and right sides of the rotating blade, and the two fixing frames are respectively arranged on the outer surfaces of the two cams;
[0016] The lower sides of the two fixing frames are fixedly connected to the upper side of the filter screen.
[0017] Preferably, the two cams can contact the inner walls of the two fixing frames respectively;
[0018] Among them, a switch door is arranged on the front side of the screening box, and a connecting shaft is rotatably connected between the switch door and the screening box.
[0019] Preferably, the switch door and the screening box are rotatably connected via a connecting shaft;
[0020] Wherein, a switch handle is fixedly connected to the front side of the switch door.
[0021] (III) Beneficial effects
[0022] Compared with the prior art, the utility model provides a sand and gravel screening device, which has the following beneficial effects:
[0023] (1) The sand and gravel screening device pours sand and gravel into the interior of the screening box, and the sand and gravel entering the screening box will fall onto the rotating blades on the rear side of the rotating shaft. The weight of the sand and gravel will cause the rotating blades to drive the rotating shaft to rotate counterclockwise. During the rotation, the sand and gravel will fall onto the upper side of the filter screen for screening. At the same time, the rotating shaft will drive the filter screen to slide back and forth inside the sliding groove after a series of transmissions. The sand and gravel accumulated on the upper side of the filter screen will be quickly screened by the sliding of the filter screen, and then fall onto the bottom wall of the aggregate trough, and finally be discharged through the discharge port. In this way, the screening device can automatically shake the filter screen during the process of screening the sand and gravel, thereby avoiding excessive sand and gravel accumulation on the filter screen to affect the screening effect, thereby improving the screening efficiency of the screening device.
[0024] (2) After the sand and gravel screening device has been used for a period of time, when a lot of large sand and gravel that cannot be screened out are accumulated on the upper side of the filter screen, the switch handle is pulled to open the switch door, and then the staff can quickly clean the sand and gravel accumulated on the upper side of the filter screen. In this way, the cleaning of the filter screen is easier and more convenient, and the practicality of the screening device is further improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a structural schematic diagram of a sand and gravel screening device of the utility model;
[0026] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the base of the utility model;
[0027] Figure 3 It is a schematic diagram of the internal connection structure of the screening box of the utility model.
[0028] In the figure: 1. base; 2. collecting trough; 3. sliding trough; 4. discharge port; 5. filter screen; 6. screening box; 7. feed port; 8. rotating shaft; 9. rotating blades; 10. cam; 11. fixed frame; 12. switch door; 13. connecting shaft; 14. switch handle; 15. supporting leg. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] See also Figures 1 to 3 The utility model provides a new technical solution: a sand and gravel screening device, including a base 1, a supporting leg 15 is fixedly connected to the lower side of the base 1, a collection trough 2 is integrally formed inside the base 1, and the bottom wall of the collection trough 2 is inclined with a lower front and a higher back, so that the sand and gravel after screening are more convenient to discharge, a sliding groove 3 connected to the collection trough 2 is integrally formed on the upper side of the base 1, a discharge port 4 connected to the collection trough 2 is integrally formed on the front side of the base 1, a filter screen 5 is slidably connected inside the sliding groove 3, a screening box 6 is fixedly connected to the upper side of the base 1, a feed port 7 connected to the interior is integrally formed on the upper side of the screening box 6, and the feed port 7 is arranged at the rear side, and a moving mechanism is arranged inside the screening box 6, which can automatically drive the filter screen 5 to slide back and forth during the screening process, and the moving mechanism includes a rotating shaft 8, a rotating blade 9, two cams 10 and two fixed frames 11.
[0031] Furthermore, the rotating shaft 8 is rotatably connected to the inside of the screening box 6, the rotating blade 9 is fixedly connected to the outer surface of the rotating shaft 8, the two cams 10 are fixedly sleeved on the outer surface of the rotating shaft 8, the two cams 10 are respectively arranged on the left and right sides of the rotating blade 9, the two fixed frames 11 are respectively arranged on the outer surfaces of the two cams 10, the lower sides of the two fixed frames 11 are fixedly connected to the upper side of the filter screen 5, the two cams 10 can respectively contact the inner walls of the two fixed frames 11, a switch door 12 is provided on the front side of the screening box 6, a connecting shaft 13 is rotatably connected between the switch door 12 and the screening box 6, the switch door 12 and the screening box 6 are rotatably connected through the connecting shaft 13, and a switch handle 14 is fixedly connected to the front side of the switch door 12.
[0032] Furthermore, when the sand and gravel begin to be screened, the sand and gravel are first poured into the interior of the screening box 6 through the feed port 7, and then the sand and gravel entering the screening box 6 will fall onto the rotating blades 9 on the rear side of the rotating shaft 8. The weight of the sand and gravel will cause the rotating blades 9 to drive the rotating shaft 8 to rotate counterclockwise. During the rotation, the sand and gravel will fall onto the upper side of the filter screen 5 for screening. At the same time, the rotating shaft 8 will drive the two cams 10 to rotate synchronously. During the rotation of the two cams 10, the raised side will contact the front wall and the rear wall of the two fixed frames 11 as they rotate, thereby driving the two fixed frames 11 to reciprocate back and forth, and the two fixed frames 11 will drive the filter screen 5 in the sliding groove 3. The filter screen 5 is used for screening by the filter 5, and the filter screen 5 is used for screening by the filter 5. The filter screen 5 is used for screening by the filter 5, and the filter screen 5 is used for screening by the filter 5. The filter screen 5 is used for screening by the filter 5, and the filter 5 is used for screening by the filter 5. The filter screen 5 is used for screening by the filter 5, and the filter 5 is used for screening by the filter 5.
[0033] Working principle: When the sand and gravel begin to be screened, first pour the sand and gravel into the screening box 6 through the feed port 7, and then the sand and gravel entering the screening box 6 will fall onto the rotating blades 9 on the rear side of the rotating shaft 8. The weight of the sand and gravel will cause the rotating blades 9 to drive the rotating shaft 8 to rotate counterclockwise. During the rotation, the sand and gravel will fall onto the upper side of the filter screen 5 for screening. At the same time, the rotating shaft 8 will drive the two cams 10 to rotate synchronously. During the rotation of the two cams 10, the raised side will contact the front wall and the rear wall of the two fixed frames 11 as they rotate, and the screen will be screened. The two fixed frames 11 are driven to reciprocate back and forth, and the two fixed frames 11 will drive the filter screen 5 to slide back and forth inside the sliding groove 3. The sand and gravel accumulated on the upper side of the filter screen 5 will be quickly screened by the sliding of the filter screen 5, and then fall onto the bottom wall of the aggregate trough 2, and finally discharged through the discharge port 4. After using it for a period of time, when a lot of large particles of sand and gravel that cannot be screened are accumulated on the upper side of the filter screen 5, the switch handle 14 is pulled to open the switch door 12, and then the staff can quickly clean up the sand and gravel accumulated on the upper side of the filter screen 5.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A sand and gravel screening device, comprising a base (1), a support leg (15) being fixedly connected to the lower side of the base (1), and a collection trough (2) being integrally formed inside the base (1); in, A sliding groove (3) communicating with the collecting groove (2) is integrally formed on the upper side of the base (1), and a filter screen (5) is slidably connected inside the sliding groove (3); The upper side of the base (1) is fixedly connected with a screening box (6), characterized in that: the upper side of the screening box (6) is integrally formed with a feed port (7) communicating with the interior, and the feed port (7) is arranged at a rear side position; The screening box (6) is provided with a motion mechanism inside, and the motion mechanism can automatically drive the filter screen (5) to slide forward and backward during the screening process; The motion mechanism comprises a rotating shaft (8), a rotating blade (9), two cams (10) and two fixed frames (11).
2. A sand and gravel screening device according to claim 1, characterized in that: The bottom wall of the aggregate trough (2) is inclined with the front lower and the back higher, so that the sand and gravel after screening can be discharged more conveniently; Wherein, a discharge port (4) connected to the material collecting trough (2) is integrally formed on the front side of the base (1).
3. A sand and gravel screening device according to claim 1, characterized in that: The rotating shaft (8) is rotatably connected to the interior of the screening box (6), and the rotating blades (9) are fixedly connected to the outer surface of the rotating shaft (8); Wherein, the two cams (10) are both fixedly sleeved on the outer surface of the rotating shaft (8).
4. A sand and gravel screening device according to claim 3, characterized in that: The two cams (10) are respectively arranged on the left and right sides of the rotating blade (9), and the two fixing frames (11) are respectively arranged on the outer surfaces of the two cams (10); The lower sides of the two fixing frames (11) are fixedly connected to the upper side of the filter screen (5).
5. A sand and gravel screening device according to claim 4, characterized in that: The two cams (10) are respectively capable of contacting the inner walls of the two fixing frames (11); A switch door (12) is provided at the front side of the screening box (6), and a connecting shaft (13) is rotatably connected between the switch door (12) and the screening box (6).
6. A sand and gravel screening device according to claim 5, characterized in that: The switch door (12) and the screening box (6) are rotatably connected via a connecting shaft (13); Wherein, a switch handle (14) is fixedly connected to the front side of the switch door (12).