A screening device
By designing a double-layer screening device with different lengths, the inner screen is used to initially screen and the sand and soil are stacked inclinedly inside the outer screen, the problem of local accumulation and blockage of sand and soil is solved, and the screening effect and yield are improved.
Patent Information
- Application Number
- CN202420711589.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-04-09
AI Technical Summary
During the screening process, existing sand and soil screening devices are prone to local accumulation of sand and soil and blocking the screen, which affects the yield.
A double-layer non-equal length screening device including an outer screen and an inner screen is designed. The aperture of the inner screen is thicker than that of the outer screen and a gap is left between the outer screen and the inner screen. After the sand and soil are initially screened through the inner screen, it is stacked inclinedly inside the outer screen to avoid local accumulation.
It effectively avoids blockage caused by local accumulation of sand and soil, and improves screening effect and yield.
Smart Images
Figure CN222724779U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sand screening equipment, in particular to a screening device. Background Art
[0002] When enterprises screen sand and soil, they often use screening devices to screen them. However, the screening devices used in the past are prone to the situation where sand and soil are embedded in the screen during the screening process, making it impossible to continue screening and affecting production.
[0003] In the prior art, the situation in which sand blocks the screen is mostly because after entering the screening device, there is excessive local accumulation of sand, which then leads to blockage of the screening cylinder. In view of this, there is an urgent need for a screening device that can solve the problem of local accumulation of sand and clogging the screen. Utility Model Content
[0004] The utility model aims to provide a screening device to solve the problem that the screening device in the prior art is prone to local accumulation of sand and soil and thus blocks the screen.
[0005] To achieve the above-mentioned purpose, the utility model provides a screening device, including a screening drum, which is externally connected to a driving device for rotation, and the screening drum includes an outer screen for feeding at one end, and an inner screen is also provided inside the feeding end of the outer screen, the outer screen and the inner screen are coaxially arranged, and an adjustable gap is left between the outer screen and the inner screen, and the length of the inner screen is shorter than that of the outer screen, so that the sand and soil separated from the inner screen can be stacked on the inner wall of the outer screen with an inclination.
[0006] When screening sand, in order to avoid the situation where the sand accumulates locally and blocks the screen, the screening device proposed in the present application improves the screening cylinder structure and changes it into a double-cylinder structure of unequal length. A shorter inner screen is also arranged inside the outer screen. The aperture of the inner screen is coarser than that of the outer screen, and a gap is left between the inner screen and the outer screen. After the sand is put into the inner screen, the inner screen in a rotating state performs a preliminary screening of the sand. The sand screened by the inner screen falls into the gap between the outer screen and the inner screen, and is stacked on the inner wall of the outer screen with an angle to avoid blockage caused by local stacking, thereby improving the screening effect of the outer screen.
[0007] Among them, the screening device also includes a sealing cover shell, which includes a fixed plate for covering the two ends of the outer screen and a shell portion covering the outer screen. The fixed plates are arranged at both ends of the outer screen, and a feed pipe connected to the inner screen is also arranged on the fixed plate near the feed end of the outer screen.
[0008] The screening device of the present application is provided with a sealing cover shell, which covers the outer side of the outer screen, and the shell is fixed above the outer screen through the fixing plate. At the same time, the feed pipe for feeding the material into the inner screen is inserted on one side of the inner screen to cooperate with the outer screen for screening.
[0009] Wherein, the feed end of the outer screen is connected to an anti-detachment pipe segment, and the cross-sectional opening of the anti-detachment pipe segment gradually expands along the feed direction.
[0010] The feed end of the outer screen is butted against the anti-detachment pipe section, and the anti-detachment pipe section is used to connect an external driving device.
[0011] Wherein, a blowing anti-blocking unit is also provided on the shell, and the blowing anti-blocking unit is arranged toward the outer screen.
[0012] A blowing anti-blocking unit is arranged above the shell part, and the blowing anti-blocking unit faces the outer screen, so that when the outer screen is blocked, the sand and soil blocked on the outer screen can be cleaned by the pressurized gas sprayed by the blowing anti-blocking unit.
[0013] Wherein, a rolling roller is also provided on the lower side of the shell portion, and the rolling roller is movably connected to the lower side of the shell portion.
[0014] The grinding roller is movably connected to the shell portion and cooperates with the shell portion. During the rotation of the outer screen, the grinding roller contacts the outer screen to clean the residual sand and soil on the outer screen.
[0015] Wherein, the outer screen is further provided with a plurality of spokes, and the plurality of spokes are axially distributed on the outer screen, and the plurality of spokes rotate with the outer screen to periodically contact the roller.
[0016] A plurality of spokes are arranged on the outer side of the outer screen, and the spokes are distributed on the outer screen and cooperate with the roller to realize the periodic vibration of the outer screen, thereby cleaning the sand and soil remaining on the outer screen.
[0017] Wherein, a plurality of scraping plates are also arranged on the inner wall of the inner screen, and the scraping plates are extended along the axial direction.
[0018] A plurality of scraping plates are arranged on the inner wall of the inner screen, and the scraping plates are arranged to cooperate with the inner screen. When the inner screen rotates to preliminarily screen the sand and soil, the scraping plates can contact the sand and soil inside the inner screen to break up the sand and soil inside the inner screen.
[0019] Wherein, the screening drum further comprises a rotating shaft, which is arranged on the coaxial line of the inner screen and the outer screen and is transmission-connected to an external power device.
[0020] The rotating shaft is used to connect to an external power device, and a plurality of brackets for fixing the screen are provided on the rotating shaft, which can cooperate to adjust the gap between the inner screen and the outer screen. At the same time, the rotating shaft can realize the transmission between the external power device and the inner screen and the outer screen.
[0021] Wherein, the driving device includes a motor, a reducer and a universal joint, the reducer is connected to the motor, the universal joint is arranged between the reducer and the rotating shaft, a protective cover is also provided outside the universal joint, and the reducer and the rotating shaft are matched through the universal joint.
[0022] The motor is used as a power source, and after being transmitted through the reducer and the universal joint, the reducer transmits power to the rotating shaft.
[0023] The utility model provides a screening device, based on the prior art, which improves the structure of the screening device and arranges a double layer of unequal length screens, so that sand and soil stay inside the outer screen in an inclined and evenly stacked manner, reducing the blockage problem caused by local stacking. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 It is a structural schematic diagram provided by a screening device of the utility model.
[0026] Figure 2 It is a schematic diagram of the overhead structure provided by a screening device of the utility model.
[0027] Figure 3 It is a schematic diagram of an end portion of a screening device provided by the utility model.
[0028] 101-screening cylinder, 102-driving device, 103-outer screen, 104-inner screen, 105-gap, 106-sealing cover, 107-fixing plate, 108-shell, 109-feeding pipe, 110-anti-drop pipe section, 111-blowing anti-blocking unit, 112-roller, 113-spoke, 114-scraping plate, 115-rotating shaft, 116-motor, 117-reducer, 118-universal joint. DETAILED DESCRIPTION
[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0031] See also Figures 1 to 3 The utility model provides a screening device, including a screening drum 101, the screening drum 101 is externally connected to a driving device 102 for rotation, the screening drum 101 includes an outer screen 103 for feeding at one end, an inner screen 104 is also provided in the feeding end of the outer screen 103, the outer screen 103 and the inner screen 104 are coaxially arranged, and an adjustable gap 105 is left between the outer screen 103 and the inner screen 104, the length of the inner screen 104 is shorter than that of the outer screen 103, so that the sand and soil separated from the inner screen 104 are stacked on the inner wall of the outer screen 103 with an inclination.
[0032] When screening sand, in order to avoid the situation where the sand is blocked by local accumulation and the screen is blocked, the screening device proposed in the present application improves the structure of the screening cylinder 101 and changes it into a double-cylinder structure of unequal length. The inner screen 104 of shorter length is also arranged in the outer screen 103. The aperture of the inner screen 104 is coarser than that of the outer screen 103, and a gap 105 is left between the inner screen 104 and the outer screen 103. After the sand is put into the inner screen 104, the inner screen 104 in a rotating state performs a preliminary screening of the sand. The sand screened by the inner screen 104 falls into the gap 105 between the outer screen 103 and the inner screen 104, and is stacked on the inner wall of the outer screen 103 with an inclination to avoid the blockage caused by local stacking, so as to improve the screening effect of the outer screen 103.
[0033] Furthermore, the screening device also includes a sealing cover 106, which includes a fixed plate 107 for shielding the two ends of the outer screen 103 and a shell 108 covering the outer screen 103. The fixed plates 107 are arranged at both ends of the outer screen 103, and a feed pipe 109 connected to the inner screen 104 is also arranged on the fixed plate 107 near the feed end of the outer screen 103.
[0034] The screening device of the present application is provided with a sealing cover 106, which covers the outer side of the outer screen 103, and the shell 108 is fixed above the outer screen 103 through the fixing plate 107. At the same time, the feed pipe 109 for feeding the material into the inner screen 104 is inserted on one side of the inner screen 104 to cooperate with the outer screen 103 to perform screening work.
[0035] Furthermore, the feed end of the outer screen 103 is connected to an anti-drop pipe segment 110, and the cross-sectional opening of the anti-drop pipe segment 110 gradually expands along the feed direction.
[0036] The feed end of the outer screen 103 is butted against the anti-detachment pipe segment 110 , and the anti-detachment pipe segment 110 is used to connect to an external driving device 102 .
[0037] Furthermore, a spraying anti-blocking unit 111 is also provided on the shell 108 , and the spraying anti-blocking unit 111 is arranged toward the outer screen 103 .
[0038] A blowing anti-blocking unit 111 is provided above the shell 108 , and the blowing anti-blocking unit 111 faces the outer screen 103 , so that when the outer screen 103 is blocked, the sand and soil blocking the outer screen 103 can be cleaned by the pressurized gas sprayed by the blowing anti-blocking unit 111 .
[0039] Furthermore, a roller 112 is provided on the lower side of the shell 108 , and the roller 112 is movably connected to the lower side of the shell 108 .
[0040] The roller 112 is movably connected to the shell 108 and cooperates with the shell 108 to contact the outer screen 103 during the rotation of the outer screen 103 to clean the residual sand on the outer screen 103.
[0041] Furthermore, the outer screen 103 is further provided with a plurality of spokes 113 , and the plurality of spokes 113 are axially distributed on the outer screen 103 , and the plurality of spokes 113 rotate along with the outer screen 103 to periodically contact the roller 112 .
[0042] A plurality of spokes 113 are disposed on the outer side of the outer screen 103 . The spokes 113 are distributed on the outer screen 103 and cooperate with the roller 112 to achieve periodic vibration of the outer screen 103 , thereby cleaning the sand and soil remaining on the outer screen 103 .
[0043] Furthermore, a plurality of scraping plates 114 are provided on the inner wall of the inner screen 104 , and the scraping plates 114 are extended in the axial direction.
[0044] A plurality of scraping plates 114 are arranged on the inner wall of the inner screen 104. The scraping plates 114 are arranged to cooperate with the inner screen 104. When the inner screen 104 rotates to preliminarily screen the sand and soil, the scraping plates 114 can contact the sand and soil inside the inner screen 104 to break up the sand and soil inside the inner screen 104.
[0045] Furthermore, the screening drum 101 further includes a rotating shaft 115 , which is disposed on the coaxial line of the inner screen 104 and the outer screen 103 and is transmission-connected to an external power device.
[0046] The rotating shaft 115 is used to connect an external power device, and a plurality of brackets for fixing the screen are provided on the rotating shaft 115, which can cooperate to adjust the gap 105 between the inner screen 104 and the outer screen 103. At the same time, the rotating shaft 115 can realize the transmission between the external power device and the inner screen 104 and the outer screen 103.
[0047] Furthermore, the driving device 102 includes a motor 116, a reducer 117 and a universal joint 118. The reducer 117 is connected to the motor 116, and the universal joint 118 is arranged between the reducer 117 and the rotating shaft 115. A protective cover is also provided on the outside of the universal joint 118. The reducer 117 and the rotating shaft 115 are coupled through the universal joint 118 for transmission.
[0048] The motor 116 is used as a power source, and after passing through the reducer 117 and the camera, the reducer 117 transmits power to the rotating shaft 115. It should be noted that the specification of this application is attached. Figure 3 The rotation direction in is not a limitation on the rotation direction of the technical solution of the present application, it is only a simple illustration of the collision between the roller 112 and the outer screen 103. The rotation direction of the screening drum 101 in the present application can be freely selected as needed.
[0049] A screening device of the utility model improves the structure of the screening device on the basis of the prior art, and sets a double layer of unequal length screens, so that the sand stays inside the outer screen 103 in an inclined and evenly stacked manner, reducing the blockage problem caused by local stacking.
[0050] What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.
Claims
1. A screening device, comprising a screening drum, wherein the screening drum is externally connected to a driving device for rotation, characterized in that: The screening cylinder includes an outer screen for feeding at one end, an inner screen is also provided inside the feeding end of the outer screen, the outer screen and the inner screen are coaxially arranged, and an adjustable gap is left between the outer screen and the inner screen, and the length of the inner screen is shorter than that of the outer screen, so that the sand and soil separated from the inner screen can be stacked on the inner wall of the outer screen with an inclination.
2. The screening device according to claim 1, characterized in that: The screening device also includes a sealing cover, which includes a fixed plate for shielding the two ends of the outer screen and a shell portion covering the outer screen. The fixed plates are arranged at the two ends of the outer screen, and a feed pipe connected to the inner screen is also arranged on the fixed plate near the feed end of the outer screen.
3. The screening device according to claim 2, characterized in that: The feeding end of the outer screen is butt-jointed with an anti-dropping pipe segment, and the cross-sectional opening of the anti-dropping pipe segment gradually expands along the feeding direction.
4. The screening device according to claim 2, characterized in that: The shell is also provided with a spraying and anti-blocking unit, and the spraying and anti-blocking unit is arranged toward the outer screen.
5. The screening device according to claim 2, characterized in that: A rolling roller is also provided on the lower side of the shell portion, and the rolling roller is movably connected to the lower side of the shell portion.
6. The screening device according to claim 5, characterized in that: The outer screen is also provided with a plurality of spokes, which are axially distributed on the outer screen and rotate with the outer screen to periodically contact the roller.
7. The screening device according to claim 1, characterized in that: A plurality of scraping plates are also arranged on the inner wall of the inner screen, and the scraping plates are extended in the axial direction.
8. The screening device according to claim 1, characterized in that: The screening drum further comprises a rotating shaft, which is arranged on the coaxial line of the inner screen and the outer screen and is transmission-connected to an external power device.
9. The screening device according to claim 8, characterized in that: The driving device includes a motor, a reducer and a universal joint, wherein the reducer is connected to the motor. The universal joint is arranged between the reducer and the rotating shaft, and a protective cover is arranged outside the universal joint. The reducer and the rotating shaft are matched through the universal joint.