Gravel aggregate screening device for laboratory
By designing a laboratory sand and gravel aggregate screening device with vibrating mounting blocks, the problems of screen hole blockage and low screening efficiency are solved, and more efficient screening and better screening quality are achieved.
Patent Information
- Application Number
- CN202422073478.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-26
AI Technical Summary
In the prior art, when sifting the sieve machine screens the sand and gravel aggregate, it is easy to cause the screen hole to be blocked by large-size sand and gravel aggregate, and the large-size sand and gravel aggregate is pressed into the screen hole by the upper material, which affects the screening efficiency and even damages the screen.
A gravel aggregate screening device for laboratory is designed. By setting up a mounting block connected to the spring, it vibrates up and down in the first installation groove, forcing the first screen plate to vibrate, spread the materials evenly and prevent large-particle aggregate from clogging the screen holes. At the same time, secondary screening is performed using the adjustable angle of the second screen plate to ensure the screening quality.
It effectively avoids clogging of screen holes, improves screening efficiency, reduces damage to screening mesh, and ensures screening quality through secondary screening.
Smart Images
Figure CN223011173U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sand and gravel detection devices, and particularly relates to a sand and gravel aggregate screening device for laboratory use. Background Technique
[0002] Machine-made sand and gravel is a construction material formed by using mechanical equipment to break large stones in mines. Due to its low transportation cost and good production controllability, it is widely used in the construction of highway and railway bridge subgrades.
[0003] During the process of crushing sand and gravel, due to the mutual extrusion of sand and gravel particles themselves, a large amount of dust is mixed after the sand and gravel are broken. Therefore, before using machine-made sand and gravel, it is necessary to screen the sand and gravel and conduct sampling tests on its powder content rate.
[0004] In the existing laboratory powder content rate detection experiment process, screening is carried out by using a sieve mesh in cooperation with a shaking sieve machine. Generally, the sand and gravel aggregate is directly piled on the sieve mesh, and then the sieve mesh swings back and forth to screen the material. If there is too much material piled on the sieve mesh, the upper material needs to wait for the lower material to pass through the sieve mesh before it can be screened; if the sieve holes of the sieve mesh are blocked by sand and gravel aggregates with larger particle sizes, the sand and gravel aggregates with larger particle sizes in the sieve holes will be pressed in the sieve holes by the upper material, which will greatly affect the screening efficiency and even damage the sieve mesh.
[0005] Therefore, a sand and gravel aggregate screening device for laboratory use is provided to solve the above technical problems. Content of the Utility Model
[0006] The technical problem solved by the utility model is that in the prior art, when a shaking sieve machine screens sand and gravel aggregates, the sieve holes are blocked by sand and gravel aggregates with larger particle sizes, and the sand and gravel aggregates with larger particle sizes are pressed in the sieve holes by the upper material, affecting the screening efficiency and even damaging the sieve mesh.
[0007] To solve the above technical problems, the technical solution adopted by the utility model is as follows:
[0008] A sand and gravel aggregate screening device for laboratory use, comprising:
[0009] A screening box, with a first installation groove opened at the top on one side, a third installation groove opened at the bottom, and a second installation groove opened on the other side; a feeding hopper is provided at the top;
[0010] An installation block, which is slidably arranged up and down in the first installation groove, and the bottom is connected to the bottom wall of the first installation groove through a vertical connecting spring;
[0011] A first sieve plate, which is arranged obliquely downward in the screening box, below the feeding port, and one end is connected to the installation block;
[0012] The second sieve plate is arranged in the second installation groove;
[0013] The rotating shaft is arranged on both sides of the second sieve plate. One end is rotatably connected to the side wall of the second installation groove, and the other end penetrates the side wall of the second installation groove and is connected to the output shaft of the horizontal motor;
[0014] The discharge slope is arranged in the third installation groove and penetrates the wall of the screening box. It is located below the second sieve plate, and the end of the second sieve plate is placed on the discharge slope.
[0015] Specifically, it further includes a vibration assembly arranged outside the screening box, and the vibration assembly is used to drive the mounting block to vibrate up and down.
[0016] Furthermore, the vibration assembly includes a mounting plate arranged on the ground. A horizontal drive motor is provided on the top of the mounting plate. A turntable is sleeved on the output shaft of the drive motor. A drive rod is arranged radially on the turntable, and a sliding rod is also connected to the end of the drive rod;
[0017] It also includes a vertical connecting rod connected to the lower surface of the mounting block. A horizontal connecting rod is provided at the bottom end of the vertical connecting rod. The horizontal connecting rod is provided with a transverse chute, and the sliding rod is arranged in the transverse chute.
[0018] Furthermore, the vibration assembly includes a mounting plate arranged on the ground. A horizontal drive motor is provided on the top of the mounting plate. A turntable is sleeved on the output shaft of the drive motor. A drive rod is arranged radially on the turntable, and a sliding block is rotatably connected to the end of the drive rod;
[0019] It also includes a vertical connecting rod connected to the lower surface of the mounting block. A horizontal connecting rod is provided at the bottom end of the vertical connecting rod. The horizontal connecting rod is provided with a transverse chute, and the sliding block is arranged in the transverse chute.
[0020] Furthermore, a limiting clamp is slidably sleeved outside the vertical connecting rod, and the limiting clamp is fixedly arranged on the outer wall of the screening box.
[0021] Specifically, vertical baffle plates are provided on both sides of the discharge slope, and a first receiving box is provided below the discharge slope.
[0022] Specifically, a discharge chute is opened on the bottom wall of the screening box, and a second receiving box is placed at the bottom of the discharge chute.
[0023] Specifically, the first sieve plate includes a U-shaped frame body with an opening facing one side of the second installation groove, and a sieve mesh is arranged inside the frame body; the second sieve plate is similar in structure to the first sieve plate, and the opening of the frame body faces one side of the discharge slope.
[0024] Specifically, a U-shaped clamping plate is provided on each side of the mounting block, and the U-shaped clamping plate slides up and down outside the side wall of the first installation groove.
[0025] Compared with the prior art, the utility model has the following advantages and beneficial effects: By setting a connecting spring to connect the mounting block, the mounting block can vibrate up and down in the first mounting groove in the device of the utility model, so that when the sand and gravel aggregate falls into the screening box, an impact force is applied to the first sieve plate, forcing the first sieve plate to vibrate. On the one hand, it can make the paving of materials more uniform during the screening process, avoid excessive pressure exerted by the upper-layer materials on the large-size aggregates falling into the sieve holes, prevent the sieve holes from being blocked and affecting the screening efficiency. At the same time, it can also make the large-size aggregates that have fallen into the sieve holes rebound upward, avoid blocking the sieve holes and damaging the sieve holes of the sieve mesh, and can also accelerate the screening speed of the aggregates and improve the screening efficiency. In addition, the overall angle of the second sieve plate can be adjusted, so that the second sieve plate is in a horizontal state when supplementing the screening of the sand and gravel aggregates that are too late to be screened above, and tilts towards the discharge slope after screening to collect the aggregates, thereby ensuring the screening quality through two screenings. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic structural diagram of the device of the utility model.
[0027] Figure 2 It is a schematic structural diagram of the screening box.
[0028] Figure 3 It is a schematic structural diagram of the first sieve plate and the mounting block.
[0029] Figure 4 It is a schematic structural diagram of the second sieve plate.
[0030] Figure 5 It is a schematic diagram of the connection relationship between the driving motor and the sliding rod.
[0031] The definitions of the reference numerals in the figure are as follows: screening box - 1; first mounting groove - 2; second mounting groove - 3; third mounting groove - 4; feeding hopper - 5; mounting block - 6; rotating shaft - 7; discharge slope - 8; mounting plate - 9; driving motor - 10; turntable - 11; driving rod - 12; sliding rod - 13; vertical connecting rod - 14; horizontal connecting rod - 15; transverse chute - 16; limit clamp - 17; baffle - 18; discharge chute - 19; frame - 20; sieve mesh - 21; U-shaped clamping plate - 22. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0032] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects brought about.
[0033] As Figures 1 to 4 shown, a sand and gravel aggregate screening device for laboratory use includes:
[0034] The screening box 1 has a first installation groove 2 opened at the top on one side, a third installation groove 4 opened at the bottom, and a second installation groove opened on the opposite side; a feeding hopper 5 is provided at the top;
[0035] The installation block 6 is slidably arranged up and down in the first installation groove 2, and the bottom is connected to the bottom wall of the first installation groove 2 through a vertical connecting spring;
[0036] The first sieve plate is inclined downwardly arranged in the screening box 1, below the feeding, and one end is connected to the installation block 6;
[0037] The second sieve plate is arranged in the second installation groove;
[0038] The rotating shaft 7 is arranged on both sides of the second sieve plate, one end is rotatably connected to the side wall of the second installation groove, and the other end passes through the side wall of the second installation groove and is connected to the output shaft of the horizontal motor;
[0039] The discharge slope 8 is arranged in the third installation groove 4 and penetrates the wall of the screening box 1, below the second sieve plate, and the end of the second sieve plate is placed on the discharge slope 8.
[0040] In the present utility model, the main principle is as follows: By putting the sand and gravel aggregate into the feeding hopper 5, the sand and gravel aggregate enters the interior of the screening box 1 from the feeding hopper 5 and continuously hits the first sieve plate. The first sieve plate is connected to the installation block 6 and vibrates up and down in the vertical direction under the impact of the sand and gravel aggregate, making the distribution of the sand and gravel aggregate on the first sieve plate more uniform and avoiding applying excessive pressure to the large-size aggregate falling into the sieve holes. At the same time, the vibration can also drive the large-size aggregate falling into the sieve holes to rebound, avoiding damage to the sieve mesh. And the first sieve plate is inclined, so that a small amount of unscreened sand and gravel aggregate on the first sieve plate can fall onto the second sieve plate for secondary screening, effectively ensuring the screening effect; during this process, the second sieve plate can also be driven by the horizontal motor to rotate reciprocally within a small range, thereby helping the second sieve plate to screen to ensure the screening effect. When the secondary screening is completed, the horizontal motor is driven to rotate the second sieve plate, so that the end of the second sieve plate is placed on the discharge slope 8, and the screened aggregate is discharged from the screening box 1 through the discharge slope 8.
[0041] As a preferred embodiment, it further includes a vibration assembly arranged outside the screening box 1, and the vibration assembly is used to drive the installation block 6 to vibrate up and down.
[0042] In this embodiment, by setting an external vibration assembly, an external driving force is provided for the installation block 6 to drive the installation block 6 to vibrate up and down to ensure the screening effect of the first sieve plate.
[0043] As a further embodiment, the vibration assembly includes a mounting plate 9 disposed on the ground. A horizontal drive motor 10 is provided on the top of the mounting plate 9. A turntable 11 is sleeved on the output shaft of the drive motor 10. A drive rod 12 is provided radially on the turntable 11. A sliding rod 13 is further provided at the end of the drive rod 12.
[0044] It further includes a vertical connecting rod 14 connected to the lower surface of the mounting block 6. A horizontal connecting rod 15 is provided at the bottom end of the vertical connecting rod 14. The horizontal connecting rod 15 is provided with a transverse sliding groove 16. The sliding rod 13 is disposed in the transverse sliding groove 16.
[0045] In this embodiment, a detailed structure is provided to realize driving the mounting block 6 to vibrate. Specifically, as Figure 5 shown, when the drive motor 10 is started, the drive motor drives the turntable 11 to rotate, so that the drive rod 12 on the turntable 11 drives the sliding rod 13 to make a circular motion. Since the sliding rod 13 is disposed in the sliding groove 16, the displacement of the sliding rod 13 in the horizontal direction always occurs in the sliding groove 16. The displacement in the vertical direction drives the upper mounting block 6 to cooperate with the connecting spring to realize a reciprocating motion process, so as to achieve the purpose of driving the mounting block 6 and the first sieve plate to vibrate in the vertical direction through the drive motor 10.
[0046] As a further embodiment, the vibration assembly includes a mounting plate 9 disposed on the ground. A horizontal drive motor 10 is provided on the top of the mounting plate 9. A turntable 11 is sleeved on the output shaft of the drive motor 10. A drive rod 12 is provided radially on the turntable 11. A sliding block is rotatably connected to the end of the drive rod 12.
[0047] It further includes a vertical connecting rod 14 connected to the lower surface of the mounting block 6. A horizontal connecting rod 15 is provided at the bottom end of the vertical connecting rod 14. The horizontal connecting rod 15 is provided with a transverse sliding groove 16. The sliding block is disposed in the transverse sliding groove 16.
[0048] In this embodiment, another detailed structure is provided to realize driving the mounting block 6 to vibrate. Its overall principle is similar to the previous embodiment, except that the end of the drive rod is rotatably connected to the sliding block, and the position in the horizontal direction is realized through the sliding block. The rotation of the sliding block here can adopt the way that a hollow rotating rod is rotatably sleeved in the sliding block, or the way of connecting the drive rod 12 with a rotating bearing. The specific connection method is not elaborated here.
[0049] As a further embodiment, a limiting clip 17 is slidably sleeved outside the vertical connecting rod 14. The limiting clip 17 is fixedly disposed on the outer wall of the screening box 1.
[0050] In this embodiment, a limiting clip 17 is slidably sleeved outside the vertical connecting rod 14. By arranging the limiting clip 17 on the outer wall of the screening box 1, the upper mounting block 6 is made more stable when vibrating in the vertical direction.
[0051] As a preferred embodiment, vertical baffle plates 18 are provided on both sides of the discharge slope 8, and a first receiving box is provided below the discharge slope 8.
[0052] In this embodiment, by arranging the vertical baffle plates 18 on both sides of the discharge slope 8, it is convenient to aggregate the screened sand and gravel aggregates and collect them using the first receiving box.
[0053] As a preferred embodiment, a discharge groove 19 is formed in the bottom wall of the screening box 1, and a second receiving box is placed at the bottom of the discharge groove 19.
[0054] In this embodiment, the discharge groove 19 serves as the outlet for dust, and the screened dust is aggregated and collected by the second receiving box. To facilitate the aggregation of dust, a receiving funnel can also be provided at the bottom of the discharge groove 19 to prevent the dust from spreading after escaping from the screening box 1 through the discharge groove 19.
[0055] As a preferred embodiment, the first sieve plate includes a U-shaped frame body 20 with the opening facing one side of the second installation groove, and a sieve mesh 21 is provided inside the frame body 20; the second sieve plate is similar in structure to the first sieve plate, and the opening of the frame body 20 faces one side of the discharge slope 8.
[0056] In this embodiment, a detailed structure of the first sieve plate and the second sieve plate is provided. By means of the U-shaped frame body 20, the obstruction on one side of the sieve plate is removed, facilitating the smooth movement of the sand and gravel aggregates.
[0057] As a preferred embodiment, a U-shaped clamping plate 22 is provided on each side of the mounting block 6, and the U-shaped clamping plate 22 slides up and down outside the side wall of the first installation groove 2.
[0058] In this embodiment, another structure for realizing the sliding of the mounting block 6 is provided. Specifically, the U-shaped clamping plate 22 clamps on both sides of the side wall of the first installation groove 2, thereby realizing the limiting and up-and-down sliding process of the mounting block 6. In addition, the up-and-down sliding process can also be realized by arranging sliding grooves on the side walls of the first installation groove 2 and arranging limiting rods horizontally extending into the sliding grooves on both sides of the mounting block 6 to ensure the stability of the mounting block 6 during the up-and-down sliding process.
[0059] In the description of the present utility model, "connection" and "fixation" can be fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present utility model should be understood according to the specific circumstances.
[0060] In the description of the present utility model, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying a specific orientation that the indicated device or element must have. Therefore, it should not be construed as a limitation to the present utility model.
[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.
Claims
1. A laboratory sand and gravel aggregate screening device, characterized in that: include: A screening box (1) has a first installation slot (2) on the top of one side, a third installation slot (4) on the bottom, and a second installation slot on the opposite side; and a feeding hopper (5) is provided on the top; A mounting block (6) is slidably disposed in the first mounting groove (2) and has a bottom connected to a bottom wall of the first mounting groove (2) via a vertical connecting spring; A first screen plate is arranged in a downwardly inclined manner in the screening box (1), located below the material feeding, and one end of which is connected to the mounting block (6); A second sieve plate is disposed in the second mounting groove; A rotating shaft (7) is arranged on both sides of the second sieve plate, one end of which is rotatably connected to the side wall of the second installation groove, and the other end of which passes through the side wall of the second installation groove and is connected to the output shaft of the horizontal motor; The discharge slope (8) is arranged in the third installation groove (4) and penetrates the wall of the screening box (1), and is located below the second screen plate. The end of the second screen plate is placed on the discharge slope (8).
2. A laboratory sand and gravel aggregate screening device as claimed in claim 1, characterized in that: It also includes a vibration component arranged outside the screening box (1), the vibration component being used to drive the mounting block (6) to vibrate up and down.
3. A laboratory sand and gravel aggregate screening device as claimed in claim 2, characterized in that: The vibration assembly comprises a mounting plate (9) arranged on the ground, a horizontal driving motor (10) being arranged on the top of the mounting plate (9), a rotating disk (11) being sleeved on the output shaft of the driving motor (10), a driving rod (12) being arranged radially on the rotating disk (11), and a sliding rod (13) being connected to the end of the driving rod (12); It also includes a vertical connecting rod (14) connected to the lower surface of the mounting block (6), a horizontal connecting rod (15) being provided at the bottom end of the vertical connecting rod (14), the horizontal connecting rod (15) being provided with a transverse sliding groove (16), and the sliding rod (13) being arranged in the transverse sliding groove (16).
4. A laboratory sand and gravel aggregate screening device as claimed in claim 2, characterized in that: The vibration assembly comprises a mounting plate (9) arranged on the ground, a horizontal driving motor (10) being arranged on the top of the mounting plate (9), a rotating disk (11) being sleeved on the output shaft of the driving motor (10), a driving rod (12) being arranged radially on the rotating disk (11), and a sliding block being rotatably connected to the end of the driving rod (12); It also includes a vertical connecting rod (14) connected to the lower surface of the mounting block (6), a horizontal connecting rod (15) is provided at the bottom end of the vertical connecting rod (14), the horizontal connecting rod (15) is provided with a transverse sliding groove (16), and the sliding block is arranged in the transverse sliding groove (16).
5. A laboratory sand and gravel aggregate screening device as claimed in claim 3 or 4, characterized in that: The external sliding sleeve of the vertical connecting rod (14) is provided with a limit clamp (17), and the limit clamp (17) is fixedly arranged on the outer wall of the screening box (1).
6. A laboratory sand and gravel aggregate screening device as claimed in claim 1, characterized in that: Vertical material blocking plates (18) are provided on both sides of the discharge slope (8), and a first material receiving box is provided below the discharge slope (8).
7. A laboratory sand and gravel aggregate screening device as claimed in claim 1, characterized in that: A material discharging trough (19) is provided on the bottom wall of the screening box (1), and a second material receiving box is placed at the bottom of the material discharging trough (19).
8. A laboratory sand and gravel aggregate screening device as claimed in claim 1, characterized in that: The first sieve plate comprises a U-shaped frame (20) with an opening facing one side of the second installation groove, and a sieve (21) is arranged inside the frame (20); the second sieve plate has a similar structure to the first sieve plate, and the opening of the frame (20) faces one side of the discharge slope (8).
9. A laboratory sand and gravel aggregate screening device as claimed in claim 1, characterized in that: A U-shaped clamping plate (22) is provided on each side of the mounting block (6), and the U-shaped clamping plate (22) slides up and down outside the side wall of the first mounting groove (2).