Screening device

Abstract

The utility model provides a screening and filtering device which comprises a shell, an opening, a discharging opening, a screening and filtering device body and a screening and filtering device, wherein the opening and the discharging opening are located at the two ends of the shell respectively; the filter cartridge is rotatably arranged in the cavity, and an inlet / outlet is formed in one end, close to the opening, of the filter cartridge; the adjusting seat is arranged at the bottom of the shell, the shell is movably connected with the adjusting seat, and the adjusting seat can adjust the inclination angle of the shell; wherein the screening and filtering device has a filtering state and a slag discharging state which are oppositely arranged, and when the screening and filtering device is in the filtering state, the adjusting seat drives the shell to incline downwards from the opening in the extending direction of the shell, so that coal slag filtered by the filter cartridge is discharged from the discharging opening; when the screening device is in a slag discharging state, the adjusting seat drives the shell to incline upwards from the opening in the extending direction of the shell, so that residual coal slag in the filter cartridge is discharged from the inlet and outlet. According to the technical scheme provided by the utility model, the problem that coal cinder which is not filtered in the filter shell cannot be quickly discharged from the filter shell by a coal cinder screening device in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, in particular to a screening device. Background Art

[0002] Mining slag screening devices are usually used in the mining production process. Their main function is to screen and filter the slag. The slag screening device can separate and screen the slag produced in the coal mining production process, separate the useful coal powder or other valuable substances in the slag, and recycle them.

[0003] However, in the prior art, some existing coal slag screening devices for mining usually require workers to place unprocessed coal slag into a filter housing and then rotate the filter housing to separate coal slag of different sizes. However, the filter housing is usually placed horizontally. After the coal slag is separated, the workers need to use tools to reach into the filter housing to remove the remaining coal slag. This operation is very cumbersome and requires a lot of manpower and labor intensity, which can easily lead to worker fatigue and low production efficiency. In addition, this method cannot quickly remove all the remaining coal slag in the filter housing, making it difficult to achieve efficient coal slag separation and processing, thereby affecting overall production efficiency. Utility Model Content

[0004] The utility model provides a screening device to solve the problem that the coal slag screening device in the prior art cannot quickly discharge the unfiltered coal slag in the filter shell from the filter shell.

[0005] The utility model provides a screening device for screening coal slag, the screening device comprising: a shell having an opening, a discharge port and a cavity, the opening and the discharge port being respectively located at two ends of the shell, and the opening and the discharge port being connected to the cavity; a filter cartridge is rotatably arranged in the cavity, the filter cartridge being arranged along the extension direction of the cavity, the filter cartridge having an inlet and outlet at one end close to the opening, filter holes being arranged on the side walls of the filter cartridge, the filter holes being connected to the cavity, and the filter cartridge being used to filter the coal slag; an adjusting seat being arranged at the bottom of the shell, the shell being movably connected to the adjusting seat, and the adjusting seat being capable of adjusting the inclination angle of the shell; wherein the screening device has a filtering state and a slag discharge state which are relatively arranged, when the screening device is in the filtering state, the adjusting seat drives the shell to tilt downward from the opening along the extension direction of the shell, so that the coal slag filtered by the filter cartridge is discharged from the discharge port; when the screening device is in the slag discharge state, the adjusting seat drives the shell to tilt upward from the opening along the extension direction of the shell, so that the coal slag remaining in the filter cartridge is discharged from the inlet and outlet.

[0006] Furthermore, the screening device also includes a motor, which is arranged on the outer wall of the shell. The motor has a driving end, the extension direction of the driving end is the same as the extension direction of the shell, and the driving end is connected to the filter cartridge to drive the filter cartridge to rotate.

[0007] Furthermore, the outer shell includes a cylinder and a baffle, the baffle is arranged at one end of the cylinder, and an opening is formed at the other end of the cylinder. The discharge port is arranged at the bottom of the baffle, the motor is arranged on the baffle, and the driving end is passed through the baffle and is connected to the filter cartridge drive, and the center line of the cylinder coincides with the rotation axis of the filter cartridge.

[0008] Furthermore, the screening device also includes a support member, which is arranged in the cavity and located between the filter cartridge and the outer shell, and the filter cartridge is rotatably connected to the outer shell through the support member.

[0009] Furthermore, the support member includes: a fixing ring, which is sleeved on the end of the filter cartridge near the opening, and a plurality of protrusions are arranged at intervals on the outer periphery of the fixing ring, the protrusions extend along the radial direction of the fixing ring, and the fixing ring rotates synchronously with the filter cartridge; a groove, which is arranged in a ring shape along the circumference of the cylinder on the inner wall of the cylinder, the groove and the protrusion are arranged correspondingly, the protrusion is movably arranged in the groove, and the groove and the protrusion cooperate to guide the rotation of the filter cartridge.

[0010] Furthermore, the adjustment seat includes a first support and a second support, the first support and the second support are spaced apart along the extension direction of the shell, the first support is arranged near the discharge port, the first support seat is hingedly connected to the bottom of the shell, the second support is arranged near the opening, the second support has a fixed part and a telescopic part that are relatively arranged, the telescopic part is hingedly connected to the bottom of the shell, and the telescopic part can move relative to the fixed part in the vertical direction to adjust the inclination angle of the shell.

[0011] Furthermore, the second support includes: a support seat; a sleeve and a telescopic rod, the sleeve is arranged on the support seat, the sleeve extends in the vertical direction, one end of the telescopic rod is movably arranged in the sleeve, and the other end of the telescopic rod is hinged to the shell.

[0012] Furthermore, a plurality of filter holes are provided on the outer circumference of the filter cartridge, and the plurality of filter holes are evenly distributed on the filter cartridge along the circumference of the filter cartridge.

[0013] Furthermore, the adjustment seat also includes a first anti-slip pad and a second anti-slip pad, the first anti-slip pad is arranged at the bottom of the first support, and the second anti-slip pad is arranged at the bottom of the second support.

[0014] Furthermore, the screening device also includes a protective cover, which is arranged on the outer side wall of the baffle, the protective cover is connected to the baffle through fasteners, and the motor is located in the protective cover.

[0015] According to the technical solution of the present invention, an adjustment seat is provided at the bottom of the shell, and the shell is movably connected to the adjustment seat, and the adjustment seat can adjust the tilt angle of the shell. In this way, the adjustment seat can adjust the tilt angle of the shell according to different needs so that the screening device can switch between different states. When the screening device is in the filtering state, the adjustment seat drives the shell to tilt downward from the opening along the extension direction of the shell. In this way, the shell can guide the coal slag filtered out by the filter cartridge so that it can quickly flow to the discharge port for discharge, thereby preventing the coal slag from accumulating in the cavity, thereby improving the filtering efficiency and discharge efficiency of the screening device. When the screening device is in the discharge state, the adjustment seat drives the shell to tilt upward from the opening along the extension direction of the shell. In this way, the shell can guide the coal slag remaining in the filter cartridge so that it can quickly flow to the inlet and outlet for discharge, without the need for additional tools to reach into the filter cartridge to bring out the coal slag, thereby greatly improving the convenience and discharge rate of the screening device, reducing the time wasted on the discharge operation of the screening device, and thereby improving the working efficiency of the screening device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 Shows a schematic structural diagram of the screening device provided by the utility model;

[0018] Figure 2 Shows a schematic diagram of the structural assembly of the housing, filter cartridge and support member provided by the utility model;

[0019] Figure 3 The exploded view of part of the structure of the housing, filter cartridge and motor provided by the utility model is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Shell;

[0022] 101, opening; 102, discharge port;

[0023] 103, cavity;

[0024] 11. Cylinder;

[0025] 12. Baffle;

[0026] 20. Filter cartridge;

[0027] 201, filter hole;

[0028] 21. Import and export;

[0029] 30. Adjustment seat;

[0030] 31. First support; 32. Second support;

[0031] 33. First anti-slip pad; 34. Second anti-slip pad;

[0032] 40. Motor;

[0033] 50. Support member;

[0034] 51. Fixed ring;

[0035] 511, bulge;

[0036] 512, contact block;

[0037] 52. Groove;

[0038] 60. Protective cover. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] like Figures 1 to 3 As shown, an embodiment of the present invention provides a screening device for screening coal slag, and the screening device includes: a shell 10, a filter cartridge 20 and an adjustment seat 30. The shell 10 has an opening 101, a discharge port 102 and a cavity 103. The opening 101 and the discharge port 102 are respectively located at the two ends of the shell 10, and the opening 101 and the discharge port 102 are both connected to the cavity 103. The filter cartridge 20 is rotatably arranged in the cavity 103. The filter cartridge 20 is arranged along the extension direction of the cavity 103. The end of the filter cartridge 20 close to the opening 101 has an inlet and outlet 21. The side wall of the filter cartridge 20 is provided with a filter hole 201. The filter hole 201 is connected to the cavity 103. The filter cartridge 20 is used to filter the coal slag. The adjustment seat 30 is arranged at the bottom of the shell 10. The shell 10 is movably connected to the adjustment seat 30. The adjustment seat 30 can adjust the inclination angle of the shell 10.

[0041] Among them, the screening device has a relatively set filtering state and a slag discharge state. When the screening device is in the filtering state, the adjustment seat 30 drives the shell 10 to tilt downward from the opening 101 along the extension direction of the shell 10, so that the coal slag filtered out by the filter cartridge 20 is discharged from the discharge port 102; when the screening device is in the slag discharge state, the adjustment seat 30 drives the shell 10 to tilt upward from the opening 101 along the extension direction of the shell 10, so that the remaining coal slag in the filter cartridge 20 is discharged from the inlet and outlet 21.

[0042] By applying the technical solution of the present invention, an adjustment seat 30 is provided at the bottom of the shell 10, and the shell 10 is movably connected to the adjustment seat 30, and the adjustment seat 30 can adjust the inclination angle of the shell 10. In this way, the adjustment seat 30 can adjust the inclination angle of the shell 10 according to different needs so that the screening device can switch between different states. When the screening device is in the filtering state, the adjustment seat 30 drives the shell 10 to tilt downward from the opening along the extension direction of the shell 10, so that the shell 10 can guide the coal slag filtered out by the filter cartridge 20, so that it can flow quickly to the discharge port 102 for discharge, thereby avoiding the accumulation of coal slag in the cavity 103, and improving the filtering efficiency and discharge efficiency of the screening device. When the screening device is in the slag discharge state, the adjustment seat 30 drives the shell 10 to tilt upward from the opening 101 along the extension direction of the shell 10, so that the shell 10 can guide the remaining coal slag in the filter cartridge 20, so that the remaining coal slag in the filter cartridge 20 can quickly flow to the inlet and outlet 21 for discharge. No additional tools are required to reach into the filter cartridge 20 to bring out the coal slag, which greatly improves the convenience and discharge rate of the screening device, reduces the time wasted on the discharge operation of the screening device, and thus improves the working efficiency of the screening device.

[0043] like Figure 3 As shown, the screening device also includes a motor 40, which is disposed on the outer wall of the housing 10. The motor 40 has a driving end extending in the same direction as the housing 10. The driving end is connected to the filter cartridge 20 to drive the filter cartridge 20 to rotate. Compared to manually driving the filter cartridge 20 to rotate, using the motor 40 to drive the filter cartridge 20 to rotate the filter cartridge 20 can achieve more uniform movement of the coal slag within the filter cartridge 20, thereby improving the screening effect and screening efficiency. Furthermore, the screening effect can be adjusted by controlling and changing the speed of the motor 40, thereby improving the accuracy of coal slag filtering and screening while reducing the labor intensity of the operator.

[0044] Specifically, the housing 10 includes a barrel 11 and a baffle 12. The baffle 12 is disposed at one end of the barrel 11, and an opening 101 is formed at the other end of the barrel 11. A discharge port 102 is disposed at the bottom of the baffle 12, making the structure of the filtration device more compact and eliminating the need for an additional discharge port. The motor 40 is disposed on the baffle 12, with the drive end passing through the baffle 12 and connected to the filter cartridge 20. This arrangement facilitates regular inspection and maintenance of the motor 40, preventing damage caused by impacts with coal slag while the motor 40 is disposed within the cavity 103, thereby ensuring stable filtration.

[0045] The drive end can directly drive the filter cartridge 20 to rotate, improving the drive speed and accuracy. The centerline of the cylinder body 11 coincides with the rotation axis of the filter cartridge 20. This ensures that the filter cartridge 20 is located in the center of the cavity 103, ensuring that the distance between the filter cartridge 20 and the inner wall of the housing 10 when rotating is similar to the distance between the filter cartridge 20 and the inner wall of the housing 10 when the filter cartridge 20 is not rotating. This prevents the distance between the filter cartridge 20 and the housing 10 from changing too much during rotation, thereby affecting the flow rate of the coal slag within the cavity 103.

[0046] like Figure 2 As shown, the screening device also includes a support member 50, which is arranged in the cavity 103 and is located between the filter cartridge 20 and the housing 10. The filter cartridge 20 is rotatably connected to the housing 10 via the support member 50. The provision of the support member 50 not only avoids uneven screening or component damage caused by shaking of the filter cartridge 20 due to an unstable connection with the housing 10, but also ensures the stability of the filter cartridge 20 during rotation, and can ensure the stability and screening accuracy of the device during long-term continuous operation. It also reduces the wear between the filter cartridge 20 and the housing 10, reduces the frequency of maintenance of each component, extends the service life of the device, and thus reduces the maintenance cost of the device. At the same time, it also enables the filter cartridge to adapt to higher load working requirements, thereby improving the durability and economy of the screening device.

[0047] In this embodiment, the specific structure of the support member 50 is not limited. The support member 50 can be set as a rotating shaft extending along the rotation axis direction of the filter cartridge 20, and a groove and a protrusion can be set between the filter cartridge 20 and the outer shell 10 for sliding fit.

[0048] Specifically, the support member 50 includes a fixing ring 51 and a groove 52. The fixing ring 51 is sleeved on the end of the filter cartridge 20 near the opening 101. A plurality of protrusions 511 are spaced apart on the outer circumference of the fixing ring 51. The protrusions 511 extend radially along the fixing ring 51, and the fixing ring 51 rotates synchronously with the filter cartridge 20. The groove 52 is annularly arranged on the inner wall of the cylinder 11 along the circumference of the cylinder 11. The groove 52 is arranged corresponding to the protrusions 511. The protrusions 511 are movably arranged in the groove 52. The groove 52 and the protrusions 511 cooperate to guide the rotation of the filter cartridge 20. The above arrangement ensures the accuracy and stability of the filter cartridge 20 during rotation. In addition, the support member 50 is arranged at the end of the filter cartridge 20 near the opening 101, which can reduce the influence and interference of the support member 50 on the coal slag in the cavity 103, thereby ensuring the flow rate of the coal slag in the cavity 103. At the same time, the cooperation between the protrusion 511 and the groove 52 can not only support the filter cartridge 20, but also guide the rotation of the filter cartridge 20, thereby preventing the filter cartridge 20 from being offset or falling from the outer shell 10 during rotation, and further ensuring the stability of the operation of the screening device.

[0049] A contact block 512 is further provided at one end of the protrusion 511 close to the groove 52 , and the contact block can increase the contact area between the protrusion 511 and the groove 52 , thereby improving the stability of the protrusion 511 moving in the groove 52 .

[0050] like Figure 1 As shown, the adjustment base 30 includes a first support 31 and a second support 32. The first support 31 and the second support 32 are spaced apart along the extension direction of the housing 10. The first support 31 is located near the discharge port 102. The first support base is hingedly connected to the bottom of the housing 10. The second support 32 is located near the opening 101. The second support 32 has a fixed portion and a telescopic portion that are arranged opposite each other. The telescopic portion is hingedly connected to the bottom of the housing 10 and can move vertically relative to the fixed portion to adjust the tilt angle of the housing 10. With the above arrangement, the tilt angle of the housing 10 can be adjusted by adjusting the height of the end of the housing 10 near the opening 101, which is convenient to operate.

[0051] In some embodiments, the telescopic portion and the fixed portion can be configured as a telescopic cylinder. In other embodiments, the telescopic portion and the fixed portion can also be configured as a screw and a threaded sleeve that are threadedly matched.

[0052] Specifically, second support 32 comprises a support base, a sleeve, and a telescopic rod. The sleeve is mounted on the support base and extends vertically. One end of the telescopic rod is movably disposed within the sleeve, and the other end of the telescopic rod is hingedly connected to housing 10. This structure is not only reliable but also visualizes the vertical displacement of housing 10, allowing the tilt angle of housing 10 to be adjusted in real time based on the discharge rate of the screening device.

[0053] like Figure 2 As shown, the outer circumference of the filter cartridge 20 is provided with a plurality of filter holes 201, and the plurality of filter holes 201 are evenly distributed on the filter cartridge 20 along the circumference of the filter cartridge 20. The plurality of evenly distributed filter holes 201 ensures the uniformity and consistency of the slag screening, and improves the screening accuracy of the screening device.

[0054] like Figure 1 As shown, the adjustment base 30 further includes a first anti-slip pad 33 and a second anti-slip pad 34. The first anti-slip pad 33 is disposed at the bottom of the first support 31, and the second anti-slip pad 34 is disposed at the bottom of the second support 32. Through the above arrangement, the stability of the filtration device under different ground conditions is increased, the risk of the device sliding and tipping due to wet, uneven ground or vibration of the housing 10 is avoided, and the safety of operation is improved.

[0055] like Figure 3 As shown, the filtration device further includes a protective cover 60, which is disposed on the outer side wall of the baffle 12 and connected to the baffle 12 via fasteners. The motor 40 is located within the protective cover 60. The provision of the protective cover 60 effectively protects the motor 40 from external environmental factors or interference, such as dust, water vapor, corrosive gases, etc., thereby ensuring stable operation of the motor 40 and, in turn, the filtration device, while extending the service life of the motor 40.

[0056] The protective cover 60 is fixedly connected to the baffle 12 by fastening screws.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0059] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A screening device, characterized in that: The screening device is used to screen coal slag, and the screening device includes: A housing (10) having an opening (101), a discharge port (102) and a cavity (103), wherein the opening (101) and the discharge port (102) are respectively located at two ends of the housing (10), and both the opening (101) and the discharge port (102) are in communication with the cavity (103); A filter cartridge (20) is rotatably disposed in the cavity (103), the filter cartridge (20) being disposed along an extension direction of the cavity (103), an inlet and outlet (21) being provided at one end of the filter cartridge (20) close to the opening (101), a filter hole (201) being provided on a side wall of the filter cartridge (20), the filter hole (201) being in communication with the cavity (103), and the filter cartridge (20) being used for filtering coal slag; an adjustment seat (30) disposed at the bottom of the housing (10), the housing (10) being movably connected to the adjustment seat (30), and the adjustment seat (30) being capable of adjusting the tilt angle of the housing (10); The screening device has a filtering state and a slag discharge state that are relatively arranged. When the screening device is in the filtering state, the adjustment seat (30) drives the outer shell (10) to tilt downward from the opening (101) along the extension direction of the outer shell (10), so that the coal slag filtered by the filter cartridge (20) is discharged from the discharge port (102); when the screening device is in the slag discharge state, the adjustment seat (30) drives the outer shell (10) to tilt upward from the opening (101) along the extension direction of the outer shell (10), so that the coal slag remaining in the filter cartridge (20) is discharged from the inlet and outlet (21).

2. The screening device according to claim 1, characterized in that The screening device further comprises a motor (40), wherein the motor (40) is arranged on the outer side wall of the housing (10), and the motor (40) has a driving end, wherein the extension direction of the driving end is the same as the extension direction of the housing (10), and the driving end is drivingly connected to the filter cartridge (20) to drive the filter cartridge (20) to rotate.

3. The screening device according to claim 2, characterized in that: The housing (10) comprises a cylinder (11) and a baffle (12), wherein the baffle (12) is arranged at one end of the cylinder (11), and the other end of the cylinder (11) forms the opening (101), and the discharge port (102) is arranged at the bottom of the baffle (12), the motor (40) is arranged on the baffle (12), and the driving end is passed through the baffle (12) and is drivingly connected to the filter cartridge (20), and the center line of the cylinder (11) coincides with the rotation axis of the filter cartridge (20).

4. The screening device according to claim 3, characterized in that: The screening device further comprises a support member (50), wherein the support member (50) is arranged in the cavity (103) and located between the filter cartridge (20) and the housing (10), and the filter cartridge (20) is rotatably connected to the housing (10) via the support member (50).

5. The screening device according to claim 4, characterized in that: The support member (50) comprises: A fixing ring (51) is sleeved on the end of the filter cartridge (20) near the opening (101), a plurality of protrusions (511) are arranged at intervals on the outer circumference of the fixing ring (51), and the protrusions (511) extend along the radial direction of the fixing ring (51), and the fixing ring (51) rotates synchronously with the filter cartridge (20); A groove (52) is annularly arranged on the inner wall of the cylinder (11) along the circumference of the cylinder (11); the groove (52) is correspondingly arranged with the protrusion (511); the protrusion (511) is movably arranged in the groove (52); the groove (52) cooperates with the protrusion (511) to guide the rotation of the filter cartridge (20).

6. The screening device according to claim 1, characterized in that: The adjustment seat (30) includes a first support (31) and a second support (32), the first support (31) and the second support (32) are spaced apart along the extension direction of the shell (10), the first support (31) is arranged close to the discharge port (102), the first support (31) is hingedly connected to the bottom of the shell (10), and the second support (32) is arranged close to the opening (101), the second support seat has a fixed portion and a telescopic portion that are relatively arranged, the telescopic portion is hingedly connected to the bottom of the shell (10), and the telescopic portion can move relative to the fixed portion in a vertical direction to adjust the inclination angle of the shell (10).

7. The screening device according to claim 6, characterized in that: The second support (32) comprises: Support seat; A sleeve and a telescopic rod, wherein the sleeve is arranged on the support seat and extends in a vertical direction, one end of the telescopic rod is movably arranged in the sleeve, and the other end of the telescopic rod is hinged to the housing (10).

8. The screening device according to claim 7, characterized in that: A plurality of filter holes (201) are provided on the outer periphery of the filter cartridge (20), and the plurality of filter holes (201) are evenly distributed on the filter cartridge (20) along the circumference of the filter cartridge (20).

9. The screening device according to claim 6, characterized in that: The adjustment seat (30) further comprises a first anti-slip pad (33) and a second anti-slip pad (34), wherein the first anti-slip pad (33) is arranged at the bottom of the first support (31), and the first anti-slip pad (33) is arranged at the bottom of the second support (32).

10. The screening device according to claim 3, characterized in that: The screening device further comprises a protective cover (60), wherein the protective cover (60) is arranged on the outer side wall of the baffle (12), the protective cover (60) is connected to the baffle (12) via fasteners, and the motor (40) is located inside the protective cover (60).

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