Screening equipment for filler grading research of coal gangue roadbed edge covering soil
By using the method of combining ultrasonic vibration and vibrating screen mechanism in the filling grading research of coal gangue roadbed edge soil, the problems of high noise and error in existing equipment are solved, and a more efficient and accurate screening effect is achieved.
Patent Information
- Application Number
- CN202421305510.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-07
AI Technical Summary
In the research on the filling grading of coal gangue roadbed edge soil, the existing screening equipment has high noise and large errors, and requires multiple screening, which affects the working efficiency.
A screening equipment for the research on the grading of filler grafting soil of coal gangue roadbed is designed. The method of combining ultrasonic vibration and vibrating screening mechanism is used to improve the accuracy and efficiency of screening through centralized vibration screening and reflow reprocessing.
It significantly reduces noise and error, reduces the number of screenings, and improves the accuracy and working efficiency of coal gangue grading research.
Smart Images
Figure CN222607163U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of filler gradation screening of coal gangue roadbed edge soil, in particular to screening equipment for research on filler gradation of coal gangue roadbed edge soil. Background Art
[0002] Coal gangue is solid waste discharged during the coal mining and coal washing processes. It is a black-gray rock with a low carbon content and harder than coal that accompanies the coal seam during the coal formation process. It includes excavation gangue during tunnel excavation, gangue mined from the roof, floor and interlayer during mining, and washed gangue picked out during coal washing. Coal gangue is used on a large scale as roadbed edge soil, and grading is the distribution of particles of various aggregate sizes, which can be determined through screening tests. By studying the filling material of coal gangue roadbed edge soil, the various mechanical properties of the foundation can be determined, thereby achieving a longer service life and better pavement performance.
[0003] The process of separating bulk materials into different particle sizes through one or more layers of screens is called screening. Screening machines use the relative movement between bulk materials and the screen surface to allow some particles to pass through the screen holes, and separate materials such as sand, gravel, and crushed stone into different grades according to particle size. Existing screening equipment can achieve a good screening effect on coal gangue used as roadbed edge soil, but in the case of studying the gradation of coal gangue filler, there is a large noise and error, and multiple screenings are required to reduce the error, which is very unfavorable for the gradation research of coal gangue and delays the work efficiency of operators.
[0004] In view of the above situation, in order to overcome the above technical problems, the utility model designs a screening device for studying the filler gradation of gangue roadbed edge soil, which solves the above technical problems. Summary of the invention
[0005] The technical purpose to be achieved by the utility model is to greatly improve the accuracy of screening and reduce measurement errors through the method of centralized vibration screening and reflux reprocessing, thereby ensuring the accuracy of research results.
[0006] In order to achieve the above technical objectives, the utility model provides the following technical solutions:
[0007] The utility model provides a screening device for studying the filler gradation of coal gangue roadbed edge soil, comprising a bracket, a shell, a feed port and a vibrating rod, wherein the shell is installed on the top of the bracket, the bracket is used to fix and install other components, a soft rubber sleeve is arranged below the bracket to reduce the wear on the ground and the noise at the same time, the shell is arranged in a cylindrical shape, a feed port is arranged above the shell, a vibrating rod is arranged inside the shell, and the vibrating rod is arranged in ultrasonic vibration. Since the ultrasonic vibrating screen has a high-frequency and low-amplitude ultrasonic vibration wave, the material can be suspended on the screen surface at low altitude, thereby increasing the screening accuracy of the material; the utility model also includes a vibrating screening mechanism and a discharging reflux mechanism, the vibrating screening mechanism is installed inside the shell, the discharging reflux mechanism is installed on the side of the shell, the vibrating screening mechanism uses the protrusions and elastic components to centrally vibrate and screen the material, and the discharging reflux mechanism further screens the material through the rotating component before discharging.
[0008] Preferably, the vibrating screen mechanism includes a screen plate, a support frame, a transmission ring, a fixed frame and an elastic component; the screen plate is installed inside the housing, and the screen plate is arranged horizontally to ensure the screening efficiency. The support frame is installed below the screen plate, and there are three support frames arranged in a circular array to increase the stability of the vibrating screen mechanism and the uniformity of the vibrating screen. The transmission ring is installed below the screen plate, and the fixed frame is installed in the middle of the transmission ring. The fixed frame is used to transfer the vibration of the transmission ring to the elastic component. The elastic component is installed above the fixed frame. The elastic component is used to concentrate on screening the middle part of the screen plate, thereby improving the screening efficiency.
[0009] Preferably, the cross-sectional shape of the screen disk is set to a trapezoid, and the trapezoidal screen disk is divided into two parts. The upper platform area is responsible for the main screening work. A protrusion is provided on the top of the screen disk, and the protrusion is annular. The annular protrusion is used to intercept smaller particles and prevent them from easily entering the inclined surface of the screen disk, thereby improving the screening accuracy, and the protrusion is arranged on the screen disk from the inside to the outside.
[0010] Preferably, the fixing frame is arranged in a cross shape, and the cross-shaped fixing frame evenly splits the power of the transmission ring. The elastic component is arranged at the midpoint of the fixing frame. At this time, the four elastic components form a ring, and the radius of the ring is equivalent to half of the radius of the screen plate platform area.
[0011] Preferably, the elastic component includes a supporting spring, a spring block and a conductive ball; the supporting spring is installed on the fixing frame, the spring block is installed on the supporting spring, the conductive ball is installed on the upper surface of the spring block, the conductive ball is used for multi-point contact with the drying net plate, the conductive balls are arranged in a ring array, and the number of conductive balls decreases from the inside to the outside.
[0012] Preferably, the discharge and reflux mechanism includes a discharge pipe, a cavity, a filter cylinder, a reflux pipe and a rotating assembly; the discharge pipe is installed on the side of the outer shell, one end of the discharge pipe is connected to the interior of the outer shell, and the other end is used for discharging, the cavity is opened in the middle part of the discharge pipe, the cross-sectional shape of the cavity is set to be annular, the cavity is used to return the screened material from the secondary screening into the outer shell, the filter cylinder is arranged on the inner surface of the discharge pipe, the surface of the filter cylinder is made of a filter, the aperture of the filter is set to be consistent with the aperture of the filter of the screen plate above the discharge and reflux mechanism, the reflux pipe is arranged below the discharge pipe, and the rotating assembly is installed inside the discharge pipe.
[0013] Preferably, the discharge pipe is arranged in a bent shape, and the bending angle is arranged in an obtuse angle, so as to ensure that after the material enters the discharge pipe, it will move to the other end due to its own gravity, and the reflux pipe and one end of the discharge pipe are arranged in parallel.
[0014] Preferably, the rotating component includes a rotating shaft, a connecting frame, a diverter block, fan blades and an inclined arc surface. A connecting frame is installed at one end of the rotating shaft, and the connecting frame is installed inside the reflux pipe. The diverter block is installed at the other end of the rotating shaft. The fan blades are installed on the side of the rotating shaft. The edge of the fan blade in the rotation direction is set as an inclined arc surface, and the diverter block is set as a boss shape. The boss-shaped diverter block is conducive to rapid diversion, so that the material enters between the fan blades as evenly as possible, and the top of the diverter block is a spherical surface, which can reduce the wear between the materials. The fan blades are provided with two layers, and the two layers of fan blades are cross-arranged so that the material is stirred by the two layers of fan blades, which further improves the accuracy of the grading research.
[0015] The beneficial effects of the utility model are as follows:
[0016] 1. The utility model is provided with a vibrating screening mechanism and a discharging reflux mechanism, which can not only achieve a good screening effect on the coal gangue used for roadbed edge soil, but also improve the research on the filler gradation of the coal gangue. During use, the noise is small, the error is small, and multiple screenings are not required, which is beneficial to the gradation research of the coal gangue and improves the work efficiency of the operator.
[0017] 2. The utility model provides a vibrating screening mechanism to perform centralized screening of materials, uses ultrasonic vibration to reduce the harmfulness of electrostatic adsorption, increases the vibration amplitude through elastic components, improves the screening effect as much as possible through protrusions, and disperses the vibration through a transmission ring, thereby obtaining a uniform vibration effect.
[0018] 3. The utility model provides a discharging reflux mechanism, which grinds the material on the filter cylinder with fan blades, thereby greatly improving the accuracy and reducing the error. The screened material is refluxed without the need for additional collection, thereby improving work efficiency and increasing the accuracy of research. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the vibrating screen mechanism of the utility model;
[0024] Figure 4 This is a cross-sectional view of the vibrating screen mechanism of the utility model;
[0025] Figure 5 This is a schematic diagram of the structure of the elastic component of the utility model;
[0026] Figure 6 It is a cross-sectional view of the discharging and reflux mechanism of the utility model;
[0027] Figure 7 It is a schematic diagram of the internal structure of the discharging and reflux mechanism of the utility model;
[0028] Figure 8 It is a structural schematic diagram of the rotating assembly of the utility model.
[0029] In the figure: 1. bracket; 2. shell; 3. feed port; 4. vibrating rod; 5. vibrating screen mechanism; 51. screen plate; 511. protrusion; 52. support frame; 53. transmission ring; 54. fixing frame; 55. elastic component; 551. support spring; 552. spring block; 553. conduction ball; 6. discharge and reflux mechanism; 61. discharge pipe; 62. cavity; 63. filter cylinder; 64. reflux pipe; 65. rotating component; 651. rotating shaft; 652. connecting frame; 653. diverter block; 654. fan blade; 655. inclined arc surface. DETAILED DESCRIPTION
[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0031] like Figures 1 to 8 As shown, a screening device for studying the filler gradation of gangue roadbed edge soil comprises a bracket 1, a shell 2, a feed port 3 and a vibrating rod 4. The shell 2 is installed on the bracket 1. The bracket 1 is used to fix and install other components. A soft rubber sleeve is arranged below the bracket 1 to reduce the wear on the ground and the noise. The shell 2 is arranged in a cylindrical shape. The feed port 3 is arranged above the shell 2. The feed port 3 is used to put in the gangue mixed material. The shell 2 is provided with a vibrating rod 4 inside. The vibrating rod 4 is used to provide power to the vibrating screening mechanism 5, so that the vibrating screening mechanism 5 Rapid vibration accelerates the screening efficiency. The vibrating rod 4 is set to ultrasonic vibration. Since the ultrasonic vibrating screen has a high-frequency and low-amplitude ultrasonic vibration wave, the material can be suspended on the screen surface at a low altitude, thereby increasing the screening accuracy of the material; it also includes a vibrating screen mechanism 5 and a discharge reflux mechanism 6. The vibrating screen mechanism 5 is installed inside the shell 2, and the discharge reflux mechanism 6 is installed on the side of the shell 2. The vibrating screen mechanism 5 uses the protrusions 511 and the elastic component 55 to centrally vibrate and screen the material. The discharge reflux mechanism 6 further screens the material through the rotating component 65 before discharging.
[0032] like Figure 3 and Figure 4 As shown, the vibrating screen mechanism 5 includes a screen plate 51, a support frame 52, a transmission ring 53, a fixing frame 54 and an elastic component 55; the screen plate 51 is installed inside the outer shell 2, and the screen plate 51 is used to screen out materials of different sizes, thereby realizing grading calculation of materials of different sizes, and the screen plate 51 is horizontally arranged to ensure screening efficiency. The support frame 52 is installed below the screen plate 51. There are three support frames 52 distributed in a circular array to increase the stability of the vibrating mechanism 5 and the uniformity of the vibrating screen. The transmission ring 53 is installed below the screen plate 51. The transmission ring 53 is used to generate ultrasonic vibration under the drive of the vibration rod 4, and then transmit the vibration to the screen plate 51 through the support rod and the elastic component 55. The fixed frame 54 is installed in the middle of the transmission ring 53. The fixed frame 54 is used to transmit the vibration of the transmission ring 53 to the elastic component 55. The elastic component 55 is installed above the fixed frame 54. The elastic component 55 is used to concentrate on screening the middle part of the screen plate 51, thereby improving the screening efficiency.
[0033] like Figure 3 and Figure 4As shown, the cross-sectional shape of the screen disc 51 is set to be a trapezoid, and the trapezoidal screen disc 51 is divided into two parts. The upper platform area is responsible for the main screening work. After the material enters through the feed port 3, it falls into the platform area, and the vibrating screen mechanism 5 fully screens it, thereby separating particles of different sizes. The screened materials that cannot pass through the screen disc 51 will slide on the inclined surface of the screen disc 51 and enter the discharge reflux mechanism 6. A protrusion 511 is provided on the top of the screen disc 51, and the protrusion 511 is annular. The annular protrusion 511 is used to intercept smaller particles to prevent them from easily entering the inclined surface of the screen disc 51, thereby improving the accuracy of screening, and the protrusion 511 is arranged from the inside to the outside on the screen disc 51, so as to play a better interception role.
[0034] like Figure 3 and Figure 4 As shown, the fixing frame 54 is arranged in a cross shape, and the cross-shaped fixing frame 54 evenly divides the power of the transmission ring 53. The elastic component 55 is arranged at the midpoint of the fixing frame 54. At this time, the four elastic components 55 form a ring, and the radius of this ring is equivalent to half of the radius of the platform area of the screen plate 51, that is, the elastic component 55 can evenly divide the platform area of the entire screen plate 51 to achieve a uniform and stable vibrating screen effect.
[0035] like Figure 5 As shown, the elastic component 55 includes a supporting spring 551, a spring block 552 and a conductive ball 553; the supporting spring 551 is installed on the top of the fixing frame 54, and the supporting spring 551 is used to amplify the vibration force provided by the transmission ring 53, so as to improve the screening effect, the spring block 552 is installed on the supporting spring 551, and the conductive ball 553 is installed on the upper surface of the spring block 552, and the conductive ball 553 is used to contact the screen plate 51 at multiple points, and the conductive balls 553 are arranged in a ring array, and the number of conductive balls 553 decreases from the inside to the outside, so as to perform partition screening under the screen plate 51 and improve the screening effect.
[0036] The transmission ring 53 transmits vibration to the support frame 52 and the fixing frame 54. The elastic component 55 on the fixing frame 54, with the assistance of the supporting spring 551, provides an enhanced vibration amplitude for the screen plate 51. The conductive ball 553 acts on the screen plate 51 to achieve multi-point vibration and generate vibration center points in four directions, ensuring that the upper surface of the screen plate 51 has sufficient vibration force and remains stable.
[0037] like Figure 6 and Figure 7As shown, the discharge and reflux mechanism 6 includes a discharge pipe 61, a cavity 62, a filter cylinder 63, a reflux pipe 64 and a rotating assembly 65; the discharge pipe 61 is installed on the side of the outer shell 2, one end of the discharge pipe 61 is connected to the interior of the outer shell 2, and the other end is used for discharging, the cavity 62 is opened in the middle part of the discharge pipe 61, and the cross-sectional shape of the cavity 62 is set to be annular, and the cavity 62 is used to return the screened material from the secondary screening into the outer shell 2, so as to improve the accuracy of the research results, the filter cylinder 63 is arranged on the inner surface of the discharge pipe 61, and the surface of the filter cylinder 63 is made of a filter, and the aperture of the filter is set to be consistent with the aperture of the filter of the screen plate 51 above the discharge and reflux mechanism 6, the reflux pipe 64 is arranged below the discharge pipe 61, and the rotating assembly 65 is installed inside the discharge pipe 61.
[0038] The discharge pipe 61 is configured to be bent, and the bending angle is configured to be an obtuse angle, so as to ensure that after the material enters the discharge pipe 61, it will move to the other end due to its own gravity, and the return pipe 64 and a section of the discharge pipe 61 are configured in parallel.
[0039] like Figure 8 As shown, the rotating assembly 65 includes a rotating shaft 651, a connecting frame 652, a diverter block 653, a fan blade 654 and an inclined arc surface 655. A connecting frame 652 is installed at one end of the rotating shaft 651. The connecting frame 652 drives the rotating assembly 65 to rotate under the drive of a motor or other driving force. The connecting frame 652 is installed inside the return pipe 64. The diverter block 653 is installed at the other end of the rotating shaft 651. The diverter block 653 is used to divert the material when the material enters at a faster rate, so as to better screen it. The fan blade 654 is installed on the side of the rotating shaft 651. The edge of the fan blade 654 in the rotation direction is set as an inclined arc surface 655, so as to reduce the wear of the material and the filter cylinder 63 caused by the selection driven by the fan blade 654, and extend the service life of the filter cylinder 63. The diverter block 653 is set in a boss shape. The boss-shaped diverter block 653 is conducive to rapid diversion, so that the material enters between the fan blades 654 as evenly as possible, and the top of the diverter block 653 is a spherical surface, which can reduce the wear between the materials. The fan blade 654 is provided with two layers, and the two layers of fan blades 654 are cross-arranged, so that the material is stirred by the two layers of fan blades 654, which further improves the accuracy of grading research.
[0040] During the working process of the utility model, the operator puts the material into the housing 2 through the feed port 3, and the material falls into the center of the screen plate 51. The vibrating rod 4 starts to emit ultrasonic vibration, and the vibrating rod 4 drives the transmission ring 53 to vibrate. The rotating ring transmits the vibration to the support frame 52 and the fixed frame 54. The elastic component 55 on the fixed frame 54 provides a larger amplitude vibration to the screen plate 51 under the rotation of the support spring 551. During this process, the conductive ball 553 vibrates the screen plate 51 at multiple points and provides vibration center points in four directions, thereby ensuring that the vibration intensity and stability of the entire screen plate 51 are guaranteed.
[0041] The material on the screen moves toward the discharge pipe 61 through the protrusion 511, and after entering the discharge pipe 61, it is blocked by the diverter block 653 and diverted into the space between the fan blades 654. The rotation of the fan blades 654 drives the material to roll over the filter cylinder 63 for many times. During this process, the inclined arc surface 655 pushes the material to rotate, thereby ensuring that the small particles of the screened material enter the cavity 62. The screened material in the cavity 62 flows back into the interior of the outer shell 2 through the reflux pipe 64, while the screened material that cannot pass through the filter cylinder 63 is discharged through the discharge pipe 61, and is collected, measured and weighed by the operator to facilitate subsequent grading research.
[0042] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. A screening device for studying the filler gradation of gangue roadbed edge soil, comprising a support (1), a shell (2), a feed port (3) and a vibrating rod (4), wherein the shell (2) is mounted on the support (1), the feed port (3) is arranged above the shell (2), and the vibrating rod (4) is arranged inside the shell (2), characterized in that: The invention also comprises a vibrating screening mechanism (5) and a material discharging and reflux mechanism (6), wherein the vibrating screening mechanism (5) is installed inside the outer shell (2), and the material discharging and reflux mechanism (6) is installed on the side of the outer shell (2). The vibrating screening mechanism (5) performs concentrated vibrating screening on the material through the provided protrusions (511) and the elastic component (55), and the material discharging and reflux mechanism (6) performs a further screening step through the rotating component (65) before discharging the material.
2. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 1 is characterized by: The vibrating screen mechanism (5) comprises a screen plate (51), a support frame (52), a transmission ring (53), a fixing frame (54) and an elastic component (55); the screen plate (51) is installed inside the housing (2), the screen plate (51) is arranged horizontally, the support frame (52) is installed below the screen plate (51), the transmission ring (53) is installed below the drying screen plate, the fixing frame (54) is installed in the middle of the transmission ring (53), and the elastic component (55) is installed above the fixing frame (54).
3. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 2, characterized in that: The cross-sectional shape of the mesh plate (51) is set to be a trapezoid. A protrusion (511) is set on the upper surface of the mesh plate (51). The protrusion (511) is annular and is set from the inside to the outside on the mesh plate (51).
4. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 2, characterized in that: The fixing frame (54) is arranged in a cross shape, and the elastic component (55) is arranged at the midpoint of the fixing frame (54).
5. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 2, characterized in that: The elastic component (55) comprises a supporting spring (551), a spring block (552) and a conductive ball (553); the supporting spring (551) is mounted on the fixing frame (54), the spring block (552) is mounted on the supporting spring (551), and the conductive ball (553) is mounted on the upper surface of the spring block (552); the conductive balls (553) are arranged in a ring array, and the number of the conductive balls (553) decreases from the inside to the outside.
6. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 1, characterized in that: The discharge and return flow mechanism (6) comprises a discharge pipe (61), a cavity (62), a filter cylinder (63), a return pipe (64) and a rotating assembly (65); the discharge pipe (61) is installed on the side of the outer shell (2), the cavity (62) is opened in the middle part of the discharge pipe (61), the cross-sectional shape of the cavity (62) is set to be annular, the filter cylinder (63) is set on the inner surface of the discharge pipe (61), the return pipe (64) is set below the discharge pipe (61), and the rotating assembly (65) is installed inside the discharge pipe (61).
7. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 6, characterized in that: The discharge pipe (61) is arranged in a bent shape, the bending angle is arranged to be an obtuse angle, and the return pipe (64) and a section of the discharge pipe (61) are arranged in parallel.
8. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 6, characterized in that: The rotating assembly (65) comprises a rotating shaft (651), a connecting frame (652), a diverter block (653), a fan blade (654) and an inclined arc surface (655); the connecting frame (652) is installed at one end of the rotating shaft (651); the connecting frame (652) is installed inside the return pipe (64); the diverter block (653) is installed at the other end of the rotating shaft (651); the fan blade (654) is installed on the side of the rotating shaft (651); and the edge of the fan blade (654) in the rotation direction is set as the inclined arc surface (655).
9. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 8, characterized in that: The diverter block (653) is configured to be in the shape of a boss, and the upper surface of the diverter block (653) is a spherical surface.
10. The screening device for studying filler gradation of gangue roadbed edge soil according to claim 8, characterized in that: The fan blades (654) are arranged in two layers, and the two layers of fan blades (654) are arranged crosswise.