An anti-blocking hopper and feeding device, particle wear test bench, and particle deposition test bench

Abstract

The present invention belongs to the technical field of hoppers, and specifically relates to an anti-clogging hopper and feeding device, a particle wear test bench, and a particle deposition test bench, which include: a hopper body, a filter screen, a drive assembly, a rolling assembly, and a scraping assembly, wherein the filter screen is connected to the inner wall of the hopper body, and the drive assembly is used to drive the rolling assembly and the scraping assembly to move left and right within the hopper body. The present invention provides a roller, and the roller's squeezing of the filter screen can provide additional downward pressure to squeeze the bonded particles through the filter screen, thereby reducing the probability of filter screen clogging. The inner wall of the roller can be vibrated by an oscillator, so that the vibration is transmitted to the filter screen through the roller, so that the bonded particles are shaken apart and pass through the filter screen, thereby improving the feeding efficiency. When the roller rolls forward, the scraping structure at the lower end of the intercepting plate scrapes up the large particles that have not passed through the filter screen and is driven by the roller to pass through the secondary crushing of the crushing structure in the crushing area, so that the bonded large particles are crushed and thrown forward by the roller for secondary filtration.

Description

Technical Field

[0001] The invention belongs to the technical field of lower hoppers, and in particular relates to an anti-blocking lower hopper and a feeding device, a particle wear test bench, and a particle deposition test bench. Background Art

[0002] At present, in industrial and agricultural production, particle wear experiments, and particle deposition experiments, when it comes to the discharge of sticky particles, the particles are often too sticky due to high moisture content or increased temperature, and are very easy to agglomerate, resulting in uneven discharge. The existing technology uses a filter to disperse the agglomerated material, which brings problems such as filter clogging and poor filtration effect.

[0003] Existing technologies often use vibration and shaking of the filter to make the particles pass through the filter, which often results in low material discharge efficiency and the agglomerated particles cannot disperse and pass through the filter on their own. Manual stirring or clearing out of the discharge hopper for additional crushing is required, affecting the normal operation of the equipment. Summary of the Invention

[0004] In view of this, in order to solve the problems existing in the prior art, the purpose of the present invention is to provide an anti-clogging lower hopper and feeding device, a particle wear test bench, and a particle deposition test bench, which can filter sticky particles with high filtration efficiency and the filter screen is not easy to clog.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A clogging-proof hopper, comprising: a hopper body, a filter screen, a drive assembly, a rolling assembly, and a scraping assembly; the hopper body is provided with a feed port at the top, a discharge port at the bottom, the filter screen is connected around an outer edge of the hopper body to a periphery of an inner wall of the hopper body, the filter screen is arranged between the feed port and the discharge port, and the drive assembly is used to drive the rolling assembly and the scraping assembly to move left and right within the hopper body;

[0007] The rolling assembly includes a rotating shaft, a roller and an oscillator. The rotating shaft is movably connected to the driving assembly. The roller is rotatably sleeved on the outside of the rotating shaft. The oscillator is arranged in the roller and one end is connected to the rotating shaft. The other end is operable to vibrate the inner wall of the roller. The outer wall of the roller is operable to knock the filter screen.

[0008] The lower end of the scraping component abuts against the filter screen.

[0009] The specific technical effect is: by setting the roller, the squeezing of the roller on the filter can provide additional downward pressure to squeeze the bonded particles through the filter, reducing the probability of filter clogging, and the inner wall of the roller can be vibrated by the oscillator so that the vibration is transmitted to the filter through the roller, so that the bonded particles are shaken and pass through the filter, thereby improving the discharge efficiency; when the roller rolls forward, the large particles that have not passed through the filter are scraped up by the lower end of the scraping assembly and driven by the roller for secondary crushing, and the bonded large particles are crushed and thrown to the front by the roller for secondary filtering, thereby avoiding the bonded particles clogging the filter and affecting the normal operation of the discharge hopper.

[0010] Furthermore, the oscillator is a cam, and the cam is concentrically or eccentrically arranged with the rotating shaft.

[0011] The specific technical effect is: the oscillator is designed as a cam. When the flange of the cam rotates downward, it can add additional downward pressure and vibration to the drum, so that the cam periodically hits the drum, allowing the bonded particles to pass through the filter under the action of extrusion and vibration.

[0012] Furthermore, the oscillator is a pendulum, one end of the pendulum is elastically connected to the rotating shaft, and the other end of the pendulum is operable to vibrate the inner wall of the drum.

[0013] The specific technical effect is: the oscillator is designed as a pendulum, and the pendulum hits the inner wall of the drum as the shaft rotates, so that the vibration is transmitted to the filter through the drum, so that the bonded particles are shaken apart and pass through the filter, thereby improving the feeding efficiency.

[0014] Furthermore, the oscillator is a pendulum, one end of the pendulum is elastically connected to the rotating shaft, at least one stopper is provided on the inner wall of the drum, and the other end of the pendulum is operable to vibrate the stopper.

[0015] The specific technical effect is: at least one block is set on the inner wall of the drum, and the pendulum vibrates the block during the swing process, so that the vibration is transmitted to the drum through the block and then to the filter, so that the sticky particles are shaken and pass through the filter, and the vibration frequency can be flexibly adjusted by setting different numbers of blocks; in the face of particles with different viscosities, only a small number of parts need to be replaced, which reduces equipment costs, reduces the workload of staff, and makes the equipment more applicable.

[0016] Furthermore, the driving assembly includes a guide rail, a support frame and a driving device, the guide rail is mounted above the filter and connected to the inner wall of the bucket body, the upper end of the support frame is slidingly connected to the guide rail, the rotating shaft is movably connected to the lower end of the support frame, the driving device is used to drive the support frame to move left and right, and the intercepting plate is connected to the lower end of the support frame through a connecting member.

[0017] The specific technical effect is: the driving device drives the support frame to perform reciprocating motion on the guide rail, thereby driving the roller and the scraping structure to work reciprocatingly.

[0018] Furthermore, the scraping assembly includes an intercepting plate located on one side of the roller, and the intercepting plate is rotatably connected to the rotating shaft or the driving assembly through a connecting piece. The intercepting plate is divided into a scraping area, a crushing area and an intercepting area from bottom to top. The lower end of the scraping area protrudes outward to form a scraping structure, and the scraping structure rests on the filter screen. The middle part of the crushing area protrudes outward to form a crushing structure. A gap is formed between the crushing structure and the outer wall of the roller for crushing the bonded particles. The crushing structure is arranged in a serrated structure or an arc-shaped structure.

[0019] The specific technical effect is: the large particles that have not passed through the filter are scraped up by the scraping structure at the lower end of the intercepting plate and driven by the roller to pass through the secondary rolling of the rolling structure in the rolling area. The bonded large particles are crushed and thrown to the front by the roller and filtered for the second time, so as to avoid the bonded particles clogging the filter and affecting the normal operation of the lower hopper; for particles with lower viscosity, the rolling structure is designed as an arc structure to achieve the rolling effect. For particles with high viscosity, the rolling structure is designed as a serrated structure with multiple layers of rolling particles to better disperse the bonded particles.

[0020] Furthermore, the filter is installed in the bucket body in a manner that the installation angle is adjustable.

[0021] The specific technical effect is: the filter can be installed obliquely in the bucket body, the particles can roll from high to low, and the discharge is accelerated.

[0022] A feeding device, comprising the anti-clogging lower hopper as described in any one of the above.

[0023] A particle wear test bench, comprising the feeding device described above.

[0024] A particle deposition test bench, comprising the feeding device described above.

[0025] The beneficial effects of the present invention are:

[0026] (1) By setting a roller, the roller can provide additional downward pressure on the filter screen to squeeze the bonded particles through the filter screen, reducing the probability of filter screen clogging. The inner wall of the roller can be vibrated by the oscillator, so that the vibration is transmitted to the filter screen through the roller, so that the bonded particles are shaken off and pass through the filter screen, thereby improving the feeding efficiency;

[0027] (2) When the drum rolls forward, the large particles that have not passed through the filter are scraped up by the lower end of the scraper assembly and driven by the drum for secondary crushing. The bonded large particles are crushed and thrown forward by the drum for secondary filtration, thus preventing the bonded particles from clogging the filter and affecting the normal operation of the lower hopper.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 is a cross-sectional view of the internal structure of Example 1 of the present invention;

[0031] Figure 2 1 is a schematic diagram of the assembly of the driving assembly, the rolling assembly, and the scraping assembly of Example 1 of the present invention;

[0032] Figure 3 is a cross-sectional view of a rolling assembly according to embodiment 1 of the present invention;

[0033] Figure 4 is a cross-sectional view of a rolling assembly according to embodiment 2 of the present invention;

[0034] Figure 5 is a cross-sectional view of a rolling assembly according to embodiment 3 of the present invention;

[0035] Figure 6 It is a schematic assembly diagram of the driving component, rolling component and scraping component of Example 4 of the present invention.

[0036] In the picture:

[0037] 1. Bucket body; 11. Feed port; 12. Discharge port; 2. Filter; 3. Drive assembly; 31. Guide rail; 32. Support frame; 33. Drive device; 4. Rolling assembly; 41. Rotating shaft; 42. Roller; 43. Oscillator; 431. Pendulum; 432. Block; 435. Cam; 5. Scraping assembly; 51. Intercepting plate; 511. Intercepting area; 512. Rolling area; 513. Scraping area; 514. Rolling structure; 515. Scraping structure; 52. Connecting piece; 521. Rotating cam. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] Example 1:

[0040] like Figures 1 to 3 As shown, an anti-clogging lower hopper includes: a hopper body 1, a filter screen 2, a drive assembly 3, a rolling assembly 4 and a scraping assembly 5. The top of the hopper body 1 is provided with a feed port 11, and the bottom of the hopper body 1 is provided with a discharge port 12. The outer edge of the filter screen 2 is connected to the inner wall of the hopper body 1 around a circle. The filter screen 2 is arranged between the feed port 11 and the discharge port 12. The drive assembly 3 is used to drive the rolling assembly 4 and the scraping assembly 5 to move left and right in the hopper body 1.

[0041] The rolling assembly 4 includes a rotating shaft 41, a roller 42 and an oscillator 43. The rotating shaft 41 is movably connected to the driving assembly 3. The roller 42 is rotatably mounted on the outside of the rotating shaft 41. The oscillator 43 is disposed inside the roller 42 and one end of the oscillator is connected to the rotating shaft 41. The other end of the oscillator is operable to vibrate the inner wall of the roller 42. At least a portion of the outer wall of the roller 42 is operable to knock on the filter screen 2.

[0042] The scraping assembly 5 includes an intercepting plate 51 located on one side of the roller 42. The intercepting plate 51 is connected to the driving assembly 3 through a connecting piece 52. The intercepting plate 51 is divided into a scraping area 513, a crushing area 512 and an intercepting area 511 from bottom to top. The lower end of the scraping area 513 protrudes outward to form a scraping structure 515. The scraping structure 515 rests on the filter screen 2. The middle part of the crushing area 512 protrudes outward to form a crushing structure 514. A gap for crushing the bonded particles is formed between the crushing structure 514 and the outer wall of the roller 42.

[0043] It should be noted here that: by setting up the roller 42, the squeezing of the roller 42 on the filter screen 2 can provide additional downward pressure to squeeze the bonded particles through the filter screen 2, thereby reducing the probability of clogging of the filter screen 2. The inner wall of the roller 42 can be operably vibrated by the oscillator 43, so that the vibration is transmitted to the filter screen 2 through the roller 42, so that the bonded particles are shaken and pass through the filter screen 2, thereby improving the discharge efficiency; when the roller 42 rolls forward, the scraping structure 515 at the lower end of the intercepting plate 51 will scrape up the large particles that have not passed through the filter screen 2 and be driven by the roller 42 to pass through the crushing structure 514 of the crushing area 512 for secondary crushing, and the bonded large particles are crushed and thrown to the front by the roller 42, and are rolled and vibrated for the second time, so as to avoid the bonded particles clogging the filter screen 2 and affecting the normal operation of the discharge hopper.

[0044] The rolling structure 514 is arranged in an arc shape.

[0045] It should be noted here that: for particles with low viscosity, the rolling structure 514 can be designed as an arc structure to achieve the rolling effect.

[0046] The driving assembly 3 includes a guide rail 31, a support frame 32 and a driving device 33. The guide rail 31 is mounted above the filter 2 and connected to the inner wall of the bucket body 1. The upper end of the support frame 32 is slidably connected to the guide rail 31, and the rotating shaft 41 is movably connected to the lower end of the support frame 32. The driving device 33 is used to drive the support frame 32 to move left and right. The intercepting plate 51 is connected to the lower end of the support frame 32 through a connecting member 52.

[0047] It should be noted that the driving device 33 drives the support frame 32 to perform reciprocating motion on the guide rail 31 , thereby driving the roller 42 and the scraping structure 515 to work reciprocatingly.

[0048] Preferably, the driving device 33 includes a driving motor and a chain. The two ends of the chain are respectively connected to the driving motor and the support frame 32. The driving motor is connected to an external power supply. When the driving motor is turned on, the chain is used for transmission, thereby driving the support frame 32 to move left and right.

[0049] Preferably, the support frame 32 is mounted on the slide rail via a pulley, and the driving device 33 is a driving motor, which is used to drive the pulley to rotate, thereby driving the support frame 32 to move left and right.

[0050] The oscillator 43 is a cam 435 , which is concentrically or eccentrically disposed with respect to the rotating shaft 41 .

[0051] It should be noted here that the oscillator 43 is designed as a cam 435. When the flange of the cam 435 rotates downward, it can add additional downward pressure and vibration to the roller 42, so that the cam 435 periodically hits the roller 42, allowing the bonded particles to pass through the filter screen 2 under the action of extrusion and vibration, which can more efficiently extrude the particles.

[0052] The lower end of the support frame 32 is provided with a mounting groove, and the rotating shaft 41 is inserted into the mounting groove. The rotating shaft 41 can move up and down in the mounting groove. When thick particles are accumulated on the filter screen 2, the rotating shaft 41 and the roller 42 have a certain lifting space to avoid damage to the equipment.

[0053] The specific working principle of Example 1 is as follows: after the driving device 33 is started, the driving support frame 32 moves to the right, and the rotating shaft 41 rotates at the same time. At this time, the roller 42 rolls to the right, and the cam 435 rotates along with the rotating shaft 41. When the flange of the cam 435 rotates downward, it can provide additional downward pressure and vibration for the roller 42, so that the roller 42 periodically hits the filter screen 2;

[0054] Particles are poured into the hopper 1 from the feed port 11 and fall onto the filter screen 2. The unbonded particles are vibrated by the roller 42 on the filter screen 2 and are accelerated through the filter screen 2. The slightly bonded particles are crushed by the roller 42 and squeezed out of the filter screen 2.

[0055] The scraping assembly 5 moves along with the rolling assembly 4. The scraping structure 515 on the intercepting plate 51 is in close contact with the filter screen 2, shoveling together the large particles that have not been filtered. The particles are then driven by the roller 42 through the rolling area 512. After being crushed by the rolling structure 514, they are thrown forward by the roller 42 for secondary filtration.

[0056] The filtered particles are discharged from the lower hopper through the discharge port 12.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the implementation and protection scope of the present invention.

[0058] The present invention also has the following implementation modes based on the above:

[0059] Example 2:

[0060] like Figure 4 As shown,

[0061] The difference from Example 1 is that the oscillator 43 is a pendulum 431 , one end of the pendulum 431 is elastically connected to the rotating shaft 41 , and the other end of the pendulum 431 is operable to vibrate the inner wall of the drum 42 .

[0062] It should be noted here that the oscillator 43 is designed as a pendulum 431, which strikes the inner wall of the drum 42 as the rotating shaft 41 rotates, so that the vibration is transmitted to the filter screen 2 through the drum 42, so that the bonded particles are shaken apart and pass through the filter screen 2, thereby improving the feeding efficiency.

[0063] Example 3:

[0064] like Figure 5 As shown,

[0065] The difference from Example 1 is that:

[0066] The oscillator 43 is a pendulum 431 , one end of which is elastically connected to the rotating shaft 41 . At least one stopper 432 is provided around the inner wall of the drum 42 , and the other end of the pendulum 431 is operable to vibrate the stopper 432 .

[0067] It should be noted here that: at least one stopper 432 is set on the inner wall of the drum 42, and the pendulum 431 vibrates the stopper 432 during the swinging process, so that the vibration is transmitted to the drum 42 through the stopper 432 and then to the filter 2, so that the bonded particles are shaken apart and pass through the filter 2, and the vibration frequency can be flexibly adjusted by setting different numbers of stops 432; in the face of particles with different viscosities, only a small number of parts need to be replaced, which reduces equipment costs, reduces the workload of staff, and makes the equipment more applicable.

[0068] Example 4:

[0069] like Figure 6 As shown,

[0070] The difference from Example 3 is that:

[0071] The rolling structure 514 is arranged in a sawtooth structure.

[0072] It should be noted here that: for particles with high viscosity, the rolling structure 514 is designed to be a multi-layered sawtooth structure for rolling particles, so as to better disperse the adhesive particles.

[0073] Preferably, the filter screen 2 is installed in the bucket body 1 in a manner that the installation angle is adjustable.

[0074] It should be noted here that the filter screen 2 can be installed obliquely in the bucket body 1, so that the particles can roll from high to low, accelerating the discharge of the particles.

[0075] Preferably, a rotating cam 521 is provided at one end of the rotating shaft 41, and the intercepting plate 51 is rotatably connected to the flange of the rotating cam 521 through a connecting member 52. When the rotating shaft 41 rotates, the rotating cam 521 is driven to rotate, and then the intercepting plate 51 is driven to move up, down, left and right.

[0076] Preferably, the guide rail 31 is a linear guide rail, which is driven by a ball screw. The support frame 32 is connected to the slider on the linear guide rail. The driving device 33 includes a driving motor, which is connected to the screw and is used to drive the screw to rotate, thereby driving the slider to move on the screw, thereby moving the support frame 32.

[0077] A feeding device, comprising a box, a feeding system, a weighing device and a feeding device; wherein the feeding system comprises a material barrel, a feeding pipe, and an anti-clogging lower hopper as described above.

[0078] A particle wear test bench includes an air supply system, piping, a feeding system, a sample rack, and a recovery system; the feeding system includes the aforementioned feeding device; the particle wear test bench requires a stable, timed and quantitative particle flow; the feeding amount can be flexibly adjusted by adjusting the rotation speed of the rotating shaft 41 and the number of blocks 432; and the feeding efficiency can also be guaranteed when dealing with high-humidity and high-viscosity particles.

[0079] A particle deposition test bench includes an air supply system, piping, a feeding system, a sample rack, and a recovery system; the feeding system includes the aforementioned feeding device; the particle deposition test bench requires a stable, timed and quantitative particle flow; the discharge amount can be flexibly adjusted by adjusting the rotation speed of the rotating shaft 41 and the number of blocks 432; and the discharge efficiency can also be guaranteed when dealing with high-humidity and high-viscosity particles.

[0080] In summary, the beneficial effects of the present invention are:

[0081] (1) By setting the roller 42, the roller 42 can provide additional downward pressure on the filter screen 2 to squeeze the bonded particles through the filter screen 2, thereby reducing the probability of clogging of the filter screen 2. The inner wall of the roller 42 can be vibrated by the oscillator 43, so that the vibration is transmitted to the filter screen 2 through the roller 42, so that the bonded particles are shaken and pass through the filter screen 2, thereby improving the feeding efficiency;

[0082] (2) When the roller 42 rolls forward, the scraping structure 515 at the lower end of the intercepting plate 51 scrapes up the large particles that have not passed through the filter screen 2 and is driven by the roller 42 to pass through the secondary rolling structure 514 of the rolling area 512. The bonded large particles are crushed and thrown to the front by the roller 42 and are vibrated by the secondary rolling to prevent the bonded particles from clogging the filter screen 2 and affecting the normal operation of the lower hopper.

[0083] The various devices selected in this application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0084] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0085] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0086] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. An anti-clogging hopper, characterized in that: include: A bucket body (1), a filter screen (2), a driving assembly (3), a rolling assembly (4) and a scraping assembly (5), wherein the top of the bucket body (1) is provided with a feed port (11), the bottom of the bucket body (1) is provided with a discharge port (12), the outer edge of the filter screen (2) is connected to the inner wall of the bucket body (1) around one circle, the filter screen (2) is arranged between the feed port (11) and the discharge port (12), and the driving assembly (3) is used to drive the rolling assembly (4) and the scraping assembly (5) to move left and right in the bucket body (1); The rolling assembly (4) comprises a rotating shaft (41), a roller (42) and an oscillator (43); the rotating shaft (41) is movably connected to the driving assembly (3); the roller (42) is rotatably sleeved on the outside of the rotating shaft (41); the oscillator (43) is arranged in the roller (42) and one end of the oscillator is connected to the rotating shaft (41) and the other end of the oscillator is operable to vibrate the inner wall of the roller (42); and the outer wall of the roller (42) is operable to knock the filter (2); The lower end of the scraping assembly (5) abuts against the filter screen (2), and the scraping assembly (5) includes an intercepting plate (51) located on one side of the roller (42). The intercepting plate (51) is rotatably connected to the rotating shaft (41) or the driving assembly (3) through a connecting member (52). The intercepting plate (51) is composed of a scraping area (513), a rolling area (512) and an intercepting area (511) from bottom to top. The lower end of the scraping area (513) protrudes outward to form a scraping structure (515). The scraping structure (515) abuts against the filter screen (2). The middle part of the rolling area (512) protrudes outward to form a rolling structure (514). A gap for rolling and bonding particles is formed between the rolling structure (514) and the outer wall of the roller (42). The rolling structure (514) is arranged in a serrated structure or an arc structure.

2. The anti-clogging hopper as claimed in claim 1, characterized in that: The oscillator (43) is a pendulum (431), one end of the pendulum (431) is elastically connected to the rotating shaft (41), and the other end of the pendulum (431) is operable to vibrate the inner wall of the drum (42).

3. The anti-clogging hopper as claimed in claim 1, characterized in that: The oscillator (43) is a pendulum (431), one end of which is elastically connected to the rotating shaft (41), at least one stopper (432) is provided on the inner wall of the drum (42), and the other end of the pendulum (431) is operable to vibrate the stopper (432).

4. The anti-clogging hopper as claimed in claim 1, characterized in that: The driving assembly (3) comprises a guide rail (31), a support frame (32) and a driving device (33); the guide rail (31) is mounted above the filter screen (2) and connected to the inner wall of the bucket body (1); the upper end of the support frame (32) is slidably connected to the guide rail (31); the rotating shaft (41) is movably connected to the lower end of the support frame (32); the driving device (33) is used to drive the support frame (32) to move left and right; the intercepting plate (51) is connected to the lower end of the support frame (32) via a connecting member (52).

5. The anti-clogging lower hopper as claimed in claim 1, characterized in that: The filter screen (2) is installed in the bucket body (1) in a manner in which the installation angle is adjustable.

6. A feeding device, characterized in that: The invention comprises the anti-clogging lower hopper according to any one of claims 1 to 5.

7. A particle wear test bench, characterized in that: Comprising the feeding device as claimed in claim 6.

8. A particle deposition test bench, characterized in that: Comprising the feeding device as claimed in claim 6.

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