Sieving device capable of adjusting particle size of fine aggregate

Abstract

The utility model discloses a fine aggregate particle size adjustable sieving device, which relates to the technical field of aggregate particle sieving and comprises a machine body and a servo motor, a reciprocating screw rod is movably mounted at the output end of the servo motor, a gear is fixedly mounted at one end of the reciprocating screw rod, and fixing plates are fixedly mounted at two ends of the machine body. An outer drum screen is movably mounted on one side of the fixing plate, and a fluted disc is fixedly mounted at one end of the outer drum screen. Through the arrangement of the outer drum screen, the inner drum screen, the inserting blocks, the limiting holes and the like, the hydraulic rod retracts to pull the inner drum screen, so that the inner drum screen moves horizontally, the inserting blocks move out of the limiting holes to relieve limiting of the outer drum screen, and the servo motor drives the gear to drive the outer drum screen to rotate by a certain angle; the through holes in the surfaces of the outer drum screen and the inner drum screen are distributed in a staggered mode, so that the sizes of the through holes are adjusted according to the required aggregate particle standard, operation steps are simplified, the application range of the screening machine is widened, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aggregate particle screening, in particular to a screening device with adjustable fine aggregate particle size. Background Art

[0002] Aggregate refers to the granular material that acts as a skeleton and filler in concrete and mortar. There are two types of aggregate: fine aggregate and coarse aggregate. The diameter of fine aggregate particles is between 0.16 and 5 mm. Natural sand is generally used, such as river sand, sea sand and valley sand. When natural sand is lacking, artificial sand ground from hard rocks can also be used; the diameter of coarse aggregate particles is greater than 5 mm, and commonly used ones are crushed stone and pebbles. The aggregate needs to be screened before being used as concrete filling material.

[0003] The existing screening machine is a vibrating screening mechanical equipment that utilizes the relative movement between bulk materials and the screen surface to allow some particles to pass through the screen holes and classify materials such as sand, gravel, and crushed stone into different grades according to particle size.

[0004] However, when screening aggregates, most of the existing fine aggregate particle screening devices use a fixed size of screen holes. In order to screen aggregate particles of different sizes, it is often necessary to replace screening machines of different specifications. The device has a small application range, the screening steps are relatively cumbersome, the work efficiency is low, and it is inconvenient for workers to use. At the same time, when screening aggregates, since the inner wall of the through hole is not uniform and smooth, aggregate particles are easily blocked in the through hole, affecting the screening efficiency of the screening machine. It is often necessary for workers to knock, poke, etc. on the device to clear it, which brings inconvenience to the workers and increases their workload. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a fine aggregate particle size adjustable screening device to solve the technical problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fine aggregate particle size adjustable screening device, comprising a machine body and a servo motor, a reciprocating screw rod movably mounted on the output end of the servo motor, and a gear is fixedly mounted on one end of the reciprocating screw rod, fixed plates are fixedly mounted on both ends of the machine body, and an outer drum screen is movably mounted on one side of the fixed plate, a toothed disk is fixedly mounted on one end of the outer drum screen, and a limiting hole is provided at one end of the outer drum screen, an inner drum screen is movably mounted on the inner side of the outer drum screen, and an insert block matching the limiting hole is fixedly mounted on one end of the inner drum screen, a long-axis spiral plate is fixedly mounted on the inner side of the inner drum screen, and a transfer shaft is movably mounted on one end of the long-axis spiral plate.

[0007] By adopting the above technical solution, the inner drum screen is pulled by contracting the hydraulic rod, so that the inner drum screen moves horizontally, so that the plug block is moved out of the limiting hole to release the limiting of the outer drum screen, and the servo motor drives the gear to drive the outer drum screen to rotate a certain angle, so that the through holes on the surfaces of the outer drum screen and the inner drum screen are arranged alternately, so that the through hole size can be adjusted according to the required aggregate particle standard, simplifying the operating steps, increasing the application scope of the screening machine, improving work efficiency, and facilitating the use of staff.

[0008] The utility model is further configured such that an annular vibrator is movably mounted at one end of the reciprocating screw, and an annular vibration plate is movably mounted on the side of the annular vibrator, the annular vibration plate and the annular vibrator are connected by a spring, and vibration motors are fixedly mounted at both ends of the annular vibration plate, and one side surface of the annular vibration plate is provided with a convexity.

[0009] By adopting the above technical solution, an annular vibration plate is installed in contact with the surface of the outer drum screen, so that the annular vibration plate can perform multi-directional high-frequency vibration strikes on the through holes on the surfaces of the outer drum screen and the inner drum screen, thereby clearing the parts of the surfaces of the outer drum screen and the inner drum screen that are blocked by aggregates during the screening process.

[0010] The utility model is further configured that a funnel groove is fixedly installed at one end of the machine body, and the inner side of the machine body is configured as an inclined sliding surface, a first discharge port is opened at the bottom of the machine body, and a second discharge port is opened at one end of the machine body.

[0011] By adopting the above technical solution, by setting the bottom of the machine body as an inclined sliding surface, the screened aggregate is subjected to the action of gravity and the limitation of the inclined sliding surface, and can be better concentrated and discharged from the first discharge port, so as to facilitate the collection of the screened aggregate particles.

[0012] The utility model is further configured that a hydraulic rod is fixedly installed at one end of the machine body, and a transfer shaft is movably installed at one end of the hydraulic rod, and the hydraulic rod is connected to the long-axis spiral plate through the transfer shaft.

[0013] By adopting the above technical solution and installing the adapter shaft, the hydraulic rod can achieve the telescopic pulling of the inner drum screen to move horizontally without affecting the synchronous rotation of the inner drum screen and the outer drum screen to screen the aggregate.

[0014] The utility model is further configured that support legs are fixedly installed at both ends of the machine body, and the support legs are arranged in four groups, and a feed inlet is opened at one side of the machine body.

[0015] By adopting the above technical solution and installing supporting legs, the device can obtain better supporting force and be more stable when the device is in operation.

[0016] The utility model is further configured that a support rod is movably installed on one side of the fixed plate, the gear and the toothed disc are meshingly connected, and through holes are opened on the surfaces of the outer drum screen and the inner drum screen.

[0017] By adopting the above technical solution, the gear and the toothed disc are meshed and connected, so that the transmission mode is more stable and the device structure is more perfect.

[0018] In summary, the utility model mainly has the following beneficial effects:

[0019] The utility model is provided with an outer drum screen, an inner drum screen, an insert block, a limiting hole, etc., and the inner drum screen is pulled by contracting a hydraulic rod to make the inner drum screen move horizontally, so that the insert block is moved out of the limiting hole to release the limiting of the outer drum screen, and the servo motor drives the gear to drive the outer drum screen to rotate a certain angle, so that the through holes on the surfaces of the outer drum screen and the inner drum screen are arranged alternately, so that the through hole size can be adjusted according to the required aggregate particle standard, the operation steps are simplified, the application range of the screening machine is increased, the work efficiency is improved, and it is convenient for the staff to use. At the same time, the reciprocating screw rod is driven by the machine body to make the annular vibration body sleeved on the outer drum screen move along the surface of the outer drum screen, and the vibration motor will generate high-frequency vibration, so that the annular vibration plate performs multi-directional high-frequency vibration and strikes the drum surface, so that the parts of the inner and outer drum screen surfaces blocked by aggregates during the screening process are opened, thereby preventing the problem of reducing the screening efficiency due to device blockage and the quality problem caused by uneven screening, and at the same time simplifying the operation steps and reducing the work intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the machine body of the utility model;

[0022] Figure 3 This is a schematic diagram of the drum screen structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the annular seismic body structure of the utility model.

[0024] In the figure: 1. Machine body; 2. Feed inlet; 3. Support legs; 4. Funnel slot; 5. First discharge outlet; 6. Second discharge outlet; 7. Annular vibrator; 8. Servo motor; 9. Hydraulic rod; 10. Adapter shaft; 11. Fixed plate; 12. Outer drum screen; 13. Inner drum screen; 14. Reciprocating screw rod; 15. Support rod; 16. Gear; 17. Toothed disc; 18. Insert block; 19. Limiting hole; 20. Long-axis spiral plate; 21. Annular vibration plate; 22. Spring; 23. Vibration motor. DETAILED DESCRIPTION

[0025] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0026] The following describes an embodiment of the utility model based on its overall structure.

[0027] A fine aggregate particle size adjustable screening device, such as Figure 1-4 As shown, it includes a body 1 and a servo motor 8. A reciprocating screw 14 is movably installed at the output end of the servo motor 8, and a gear 16 is fixedly installed at one end of the reciprocating screw 14. Fixed plates 11 are fixedly installed at both ends of the body 1, and an outer drum screen 12 is movably installed on one side of the fixed plate 11. A toothed disc 17 is fixedly installed at one end of the outer drum screen 12, and a limiting hole 19 is provided at one end of the outer drum screen 12. An inner drum screen 13 is movably installed on the inner side of the outer drum screen 12, and an insert block 18 matching the limiting hole 19 is fixedly installed at one end of the inner drum screen 13. A long-axis spiral plate 20 is fixedly installed on the inner side of the inner drum screen 13, and the long A transfer shaft 10 is movably installed at one end of the long-axis spiral plate 20. When the long-axis spiral plate 20 is started, the long-axis spiral plate 20 contracts to pull the inner drum screen 13, and drives the inner drum screen 13 to move horizontally, so that the plug block 18 is moved out of the limiting hole 19 to release the limiting of the outer drum screen 12, and the servo motor 8 drives the gear 16 to drive the outer drum screen 12 to rotate a certain angle, so that the through holes on the surfaces of the outer drum screen 12 and the inner drum screen 13 are arranged alternately to achieve through holes of the size required for aggregate screening. At this time, the hydraulic rod 9 will lift and push the inner drum screen 13 to reset, and limit and lock the outer drum screen 12 again.

[0028] See also Figure 3 A circular vibrator 7 is movably mounted at one end of the reciprocating screw 14, and a circular vibration plate 21 is movably mounted on the side of the circular vibrator 7. The circular vibration plate 21 is connected to the circular vibrator 7 by a spring 22, and vibration motors 23 are fixedly mounted at both ends of the circular vibration plate 21. One side of the circular vibration plate 21 is convex, and the circular vibration plate 21 is installed to contact the surface of the outer drum screen 12, so that the circular vibration plate 21 performs multi-directional high-frequency vibration strikes on the through holes on the surfaces of the outer drum screen 12 and the inner drum screen 13, thereby opening up the parts of the surfaces of the outer drum screen 12 and the inner drum screen 13 blocked by aggregate during the screening process.

[0029] See also Figure 2A funnel trough 4 is fixedly installed at one end of the machine body 1, and the inner side of the machine body 1 is provided with an inclined sliding surface. A first discharge port 5 is provided at the bottom of the machine body 1, and a second discharge port 6 is provided at one end of the machine body 1. By setting the bottom of the machine body 1 as an inclined sliding surface, the screened aggregate is subjected to the action of gravity and the limitation of the inclined sliding surface, and can be better concentrated and discharged from the first discharge port 5, so that the screened aggregate particles can be conveniently collected.

[0030] See also Figure 2 A hydraulic rod 9 is fixedly installed at one end of the machine body 1, and a transfer shaft 10 is movably installed at one end of the hydraulic rod 9. The hydraulic rod 9 is connected to the long-axis spiral plate 20 through the transfer shaft 10. By installing the transfer shaft 10, the hydraulic rod 9 can achieve telescopic pulling of the inner drum screen 13 to move horizontally without affecting the inner drum screen 13 and the outer drum screen 12 to rotate synchronously to screen the aggregate.

[0031] See also Figure 1 Support legs 3 are fixedly installed at both ends of the machine body 1, and the support legs 3 are arranged in four groups. A feed inlet 2 is opened on one side of the machine body 1. By installing the support legs 3, the device obtains better supporting force and is more stable when the device is in operation.

[0032] See also Figure 3 A support rod 15 is movably installed on one side of the fixed plate 11, and the gear 16 is meshed with the toothed disc 17. Through holes are provided on the surfaces of the outer drum screen 12 and the inner drum screen 13, and the gear 16 is meshed with the toothed disc 17 to make the transmission mode more stable and the device structure more perfect.

[0033] The working principle of the utility model is as follows: when in use, according to the required fine aggregate particle screening specifications, the long-axis spiral plate 20 is started, so that the long-axis spiral plate 20 contracts and pulls the inner drum screen 13, and drives the inner drum screen 13 to move horizontally, so that the plug block 18 is moved out of the limiting hole 19 to release the limiting of the outer drum screen 12, and the servo motor 8 drives the gear 16 to drive the outer drum screen 12 to rotate a certain angle, so that the through holes on the surfaces of the outer drum screen 12 and the inner drum screen 13 are arranged alternately, so as to achieve through holes of the size suitable for the required aggregate screening specifications. At this time, the hydraulic rod 9 will lift and push the inner drum screen 13 to reset, and re-limit the outer drum screen 12, and then feed the aggregate into the inner drum screen 13 through the feed port 2. At this time, the servo motor 8 is started, so that the servo motor 8 drives the reciprocating screw rod 14 to rotate, and the gear 16 is meshed with the toothed disc 17. The transmission makes the outer drum screen 12 and the inner drum screen 13 rotate to screen the aggregate, and the long-axis spiral plate 20 is used to limit the aggregate particles, so that the required aggregate particles are screened and fall on the inclined sliding surface area at the bottom of the body 1 under the action of gravity, and are uniformly collected and discharged from the first discharge port 5, while the aggregate particles of larger specifications that are not required will be transported to the other end of the inner drum screen 13 and uniformly discharged from the second discharge port 6. At the same time, during the screening process, the annular vibrator 7 will be driven by the reciprocating screw 14 to reciprocate along the surface of the outer drum screen 12, and high-frequency vibration will be generated through the vibration motor 23, so that the annular vibration plate 21 will perform multi-directional high-frequency vibration and strike the through holes on the surfaces of the outer drum screen 12 and the inner drum screen 13, thereby opening up the parts of the surfaces of the outer drum screen 12 and the inner drum screen 13 blocked by aggregate during the screening process, and the screening operation will be completed.

[0034] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A fine aggregate particle size adjustable screening device, comprising a body (1) and a servo motor (8), characterized in that: A reciprocating screw (14) is movably mounted on the output end of the servo motor (8), and a gear (16) is fixedly mounted on one end of the reciprocating screw (14); fixed plates (11) are fixedly mounted on both ends of the machine body (1), and an outer drum screen (12) is movably mounted on one side of the fixed plate (11); a toothed disc (17) is fixedly mounted on one end of the outer drum screen (12), and a limiting hole (19) is provided on one end of the outer drum screen (12); an inner drum screen (13) is movably mounted on the inner side of the outer drum screen (12), and an insert block (18) matching the limiting hole (19) is fixedly mounted on one end of the inner drum screen (13); a long-axis spiral plate (20) is fixedly mounted on the inner side of the inner drum screen (13), and a transfer shaft (10) is movably mounted on one end of the long-axis spiral plate (20).

2. The fine aggregate particle size adjustable screening device according to claim 1, characterized in that: An annular vibrator (7) is movably mounted on one end of the reciprocating screw rod (14), and an annular vibration plate (21) is movably mounted on the side of the annular vibrator (7); the annular vibration plate (21) and the annular vibrator (7) are connected via a spring (22), and vibration motors (23) are fixedly mounted on both ends of the annular vibration plate (21); and one side surface of the annular vibration plate (21) is convex.

3. The fine aggregate particle size adjustable screening device according to claim 2, characterized in that: A funnel groove (4) is fixedly mounted on one end of the machine body (1), and the inner side of the machine body (1) is provided with an inclined sliding surface. A first discharge port (5) is provided at the bottom of the machine body (1), and a second discharge port (6) is provided at one end of the machine body (1).

4. The fine aggregate particle size adjustable screening device according to claim 3, characterized in that: A hydraulic rod (9) is fixedly mounted on one end of the machine body (1), and a transfer shaft (10) is movably mounted on one end of the hydraulic rod (9); the hydraulic rod (9) and the long-axis spiral plate (20) are connected via the transfer shaft (10).

5. The fine aggregate particle size adjustable screening device according to claim 4, characterized in that: Support legs (3) are fixedly mounted at both ends of the machine body (1), and the support legs (3) are arranged in four groups. A feed inlet (2) is provided on one side of the machine body (1).

6. The fine aggregate particle size adjustable screening device according to claim 5, characterized in that: A support rod (15) is movably mounted on one side of the fixed plate (11), the gear (16) and the toothed disc (17) are meshingly connected, and through holes are provided on the surfaces of the outer drum screen (12) and the inner drum screen (13).

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