A shot peening machine capable of performing pellet quality screening

Abstract

The present application provides a kind of pellet quality screening can be carried out shot blasting machine, including processing unit, distribution unit, bunker unit, dust removal unit and electrical control unit, processing unit, distribution unit and bunker unit are sequentially arranged in rack from top to bottom, dust removal unit is arranged in rack one side, and is respectively communicated with processing unit, distribution unit, electrical control unit is respectively connected with the switch communication connection of processing unit and distribution unit;Distribution unit includes the distribution chamber of upper and lower openings, screen is horizontally arranged in distribution chamber, and one end of screen can be rotated downward 90 ° under the drive of motor.The present application adopts screen structure, and realizes pellet quality screening by effective means such as cylinder reciprocating expansion, screen vibration, electrical control, etc.;The quality screening of different particle size pellets is realized by replacing screen with different aperture;The switching of two functions of shot peening strengthening and pellet quality screening is realized by electrical control.The present application can realize the two functions of pellet quality screening and shot peening strengthening.

Description

TECHNICAL FIELD

[0001] The present application relates to shot peening and shot screening technology, in particular to a shot peening machine capable of screening shot quality. BACKGROUND

[0002] Shot peening process is a kind of strengthening process that uses high-speed shot flow to repeatedly impact the surface of the workpiece being processed, so that plastic deformation occurs on the surface of the material and the internal structure of the material is refined. The workpiece processed by this process has strong fatigue resistance and hydrogen embrittlement resistance, and the reliability and service life of the workpiece are also improved. The shot used in shot peening will have defects such as breakage and pits on the surface due to high-speed impact. Using shot with the above defects will weaken the shot peening effect, and in severe cases, it will damage the surface quality of the workpiece being processed. Therefore, the shot used needs to be screened regularly before shot peening to replace the broken shot in time to ensure the effect of shot peening.

[0003] Currently, the shot used for processing is usually screened for quality by using independent shot screening devices or manual screening methods. The manual screening method has the disadvantages of inconsistent evaluation standards and low screening efficiency. Although the independent screening device can improve the efficiency and unify the screening standards, it occupies additional equipment space and increases the time and production cost of shot peening to some extent. Therefore, some people have improved the existing shot peening machine to solve the above problems. Patent CN 200610051135.6 “Method and device for cleaning residual shot peening machine” adds a grading and screening device to the shot peening machine to grade and screen the shot after shot peening and the processing waste. Patent CN201520292347 “Shot peening machine shot lifting device” adds a shot lifting mechanism to the outside of the shot peening machine and adds multiple screens to separate the shot from impurities. The above patent applications mainly propose solutions for screening shot and processing debris. Although the design solutions proposed can effectively reduce the adverse effects of debris in the shot on shot peening, they cannot effectively screen the quality of the shot used for processing, and the designed devices are all external devices that occupy a large amount of working space. SUMMARY

[0004] The present application aims to solve the problem that the existing equipment cannot effectively screen the quality of the shot, the designed additional shot screening device occupies a large space, and shot peening and shot screening need to be performed on different equipment and cannot be synchronized. A shot peening machine capable of screening shot quality is proposed. The shot peening machine adopts a screen structure and effectively screens the quality of the shot through reciprocating extension and retraction of the air cylinder, screen vibration, and electrical control. Different screen meshes with different hole diameters are used to screen the quality of shot with different particle sizes. Electrical control is used to switch between shot peening and shot quality screening. The shot peening machine can realize both shot quality screening and shot peening.

[0005] To achieve the above object, the technical scheme adopted by the present application is: a pellet quality screening shot blasting machine, comprising a processing unit, a distributing unit, a hopper unit, a dust removal unit and an electrical control unit, the processing unit, the distributing unit and the hopper unit are sequentially arranged in the frame from top to bottom, the dust removal unit is arranged on one side of the frame and is communicated with the processing unit and the distributing unit respectively, and the electrical control unit is in communication connection with the switches of the processing unit and the distributing unit respectively.

[0006] The distributing unit comprises a distributing chamber with upper and lower openings, and a screen is horizontally arranged in the distributing chamber, one end of the screen can be rotated downward by 90° under the drive of a motor.

[0007] Further, the processing unit comprises a processing chamber, an air compressor and a spray gun, the air compressor is arranged outside the shot blasting machine, the spray gun is arranged in the processing chamber, the air compressor is connected with the spray gun through a conduit, and the processing unit mainly plays a role of shot peening.

[0008] Further, the distributing unit comprises a distributing chamber, a screen, a screen frame, a guide hinge, a connecting rod, a screw, a cylinder, a suction cup, a motor, a motor base, a first bolt, a coupling, a hinge and a hopper door.

[0009] The distributing chamber is fixed below the processing chamber of the processing unit, the screen is arranged at the bottom of the screen frame, the guide hinge is installed at the lower side of the screen frame, the guide hinge is fixed with the screen frame by screws from both sides, one end of the guide hinge close to the screen frame is provided with a blocking structure, the guide hinge can be freely opened and closed at a fixed angle with the rotation of the screen frame (so that the broken pellets flow into the waste hopper according to the expectation under the guidance of the guide hinge), the cross section of the connecting rod at both ends is circular, the cross section in the middle is a combined shape of rectangle and circle (similar to ellipse), the connecting rod passes through the waist-shaped holes on both sides of the screen frame and the distributing chamber to fix the screen frame inside the distributing chamber, the screen frame can rotate with the connecting rod, the motor base is fixed at the lower side of the upper edge of the distributing chamber, the motor is fixed in the motor base through a second bolt, the motor shaft of the motor is connected with the connecting rod through the coupling, the cylinder body is fixed on the inner wall of the distributing chamber, the piston head of the cylinder is fixed with a suction cup, the suction cup cooperates with the frame of the screen frame in the horizontal state, the suction cup can be adsorbed on the frame of the screen frame when the piston is elongated, and the suction cup can be separated from the frame of the screen frame when the piston is contracted, and the hopper door is arranged at the opening of the side wall of the distributing chamber. When the distributing unit works, the cooperation of the electrical control system and the position switch controls the motor to rotate and stop in the range of 0-90°, so as to drive the connecting rod and the screen frame in the distributing chamber to rotate in the range of 0-90°, so as to switch the screen between the vertical and horizontal states, and then switch the two modes of shot peening and pellet screening, and after the rotation is in place, the screen and other structures cooperate with the expansion and contraction of the cylinder to vibrate in the screening mode, so as to ensure that the damaged pellets pass through the screen uniformly, so as to obtain better pellet screening effect.

[0010] Further, the height of the cross section of the connecting rod matches the height of the waist-shaped hole of the screen frame, the length of the cross section of the connecting rod is smaller than the length of the waist-shaped hole of the screen frame, and the screen frame can rotate with the connecting rod; the length of the cross section of the connecting rod is smaller than the height of the waist-shaped hole of the distribution chamber, so that the connecting rod can rotate in the waist-shaped hole of the distribution chamber.

[0011] Further, the suction disc can be adsorbed on the frame of the screen frame, and the frame is a frame without a waist-shaped hole.

[0012] Further, the door is fixed on the opening of the side wall of the distribution chamber through a hinge, and the door can rotate around the hinge to open and close. Different sizes of screens can be replaced through the door to realize the function of screening different sizes of pellets.

[0013] Further, the hopper unit comprises a hopper, a baffle, a flow control valve, a tee joint and a conduit; the hopper is fixed (fixed through a second bolt and a nut) below the distribution chamber, the inside of the hopper is divided into a waste area and a usable pellet area through a vertically arranged baffle, the baffle is inserted on the side wall of the hopper, and when the baffle is inserted, the baffle can completely cover the waste area but does not interfere with the usable pellet area; the baffle and the guide hinge of the distribution unit are matched through manual insertion and extraction to realize the coverage of the waste area or the usable pellet area, and then the mode switching of the finished pellet screening and the shot peening is realized; the bottom of the usable pellet area is communicated with the conduit for conveying the pellets through the tee joint, the flow control valve is arranged above the tee joint, and the qualified pellets are conveyed through the above pipeline; the bottom of the waste area is provided with an opening, and the waste obtained through screening is discharged from the opening.

[0014] Further, the dust removal unit is arranged on one side of the rack, and the dust removal inlets of the dust removal unit are respectively communicated with the machining chamber of the machining unit and the distribution chamber of the distribution unit; the dust removal unit can timely suck away the dust in the machining chamber of the machining unit and the distribution chamber of the distribution unit, prevent dust pollution, and avoid explosion and other dangers caused by too high dust concentration.

[0015] Further, the electrical control unit is in communication connection with the air compressor of the machining unit and the motor switch of the distribution unit. The electrical control unit can control the start and stop of the shot peening work and the start and stop of the dust removal unit, and complete the switching of the two functions of the shot peening and the pellet screening.

[0016] Compared with the prior art, the shot peening machine for pellet quality screening has the following advantages:

[0017] (1) The pellet quality screening shot blasting machine integrates shot blasting and pellet screening functions, and can complete both functions in a single device, shortening the processing procedure, saving equipment costs, and occupying less space.

[0018] (2) The pellet quality screening shot blasting machine can perform dust removal work through the self-provided dust removal device during the screening process, reducing the smoke dust concentration generated during the screening process, avoiding pollution of the working environment by smoke dust, and reducing the safety risk of explosion caused by smoke dust. The self-provided dust removal device can replace the operation of reducing smoke dust concentration by using liquid medium, ensuring that the screened pellets are dry, and the screened pellets can be directly used in the next round of processing without the need for drying and other subsequent treatments, ensuring processing efficiency.

[0019] (3) The pellet quality screening shot blasting machine can complete pellet quality screening and collection work through the extension and retraction vibration of the air cylinder without introducing additional liquid medium, and the screened pellets can be directly used in the next round of processing without the need for other subsequent treatments, improving the quality and efficiency of pellet screening and processing efficiency.

[0020] (4) The pellet quality screening shot blasting machine can replace different aperture screen structures by opening the side wall bin door 214 of the distribution chamber 201 to meet the needs of different particle size pellet processing and ensure the versatility of the equipment.

[0021] (5) The pellet quality screening shot blasting machine has a simple structure, and the key components are designed in a modular manner, facilitating maintenance and replacement.

[0022] In summary, the pellet quality screening shot blasting machine can realize quality detection and screening of pellets of different sizes, improve the quality of pellet detection and screening, and also perform shot blasting, reducing the working space occupied by the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole assembly diagram of the present application;

[0024] Figure 2 It is a distribution unit assembly diagram of the present application;

[0025] Figure 3 It is a cylinder and guide leaf assembly diagram of the present application;

[0026] Figure 4The assembly drawing of the screen frame, screen, guide leaf and connecting rod of the application;

[0027] Figure 5 The assembly drawing of the motor part of the application;

[0028] Figure 6 The position relation diagram of the guide leaf and the stock bin of the application;

[0029] Figure 7 The assembly drawing of the stock bin unit of the application;

[0030] Figure 8 The schematic diagram of the shot peening mode of the application;

[0031] Figure 9 The schematic diagram of the shot screening mode of the application.

[0032] In the figure, the numbers are as follows: 1- processing unit, 2- distribution unit, 3- stock bin unit, 4- dust removal unit, 5- electrical control unit, 201- distribution chamber, 202- screen, 203- screen frame, 204- guide leaf, 205- connecting rod, 206- screw, 207- air cylinder, 208- suction cup, 209- motor, 210- motor base, 211- first bolt, 212- coupling, 213- hinge, 214- bin door, 301- stock bin, 302- baffle, 303- flow control valve, 304- tee, 305- conduit, 306- second bolt, 307- nut. DETAILED DESCRIPTION

[0033] The application is further illustrated by the following examples:

[0034] Example 1

[0035] This example discloses a shot peening machine capable of screening shot quality, the structure of which is shown in the figure. Figures 1-7 A shot peening machine capable of screening shot quality, comprising a processing unit 1, a distribution unit 2, a stock bin unit 3, a dust removal unit 4 and an electrical control unit 5, wherein the processing unit 1, the distribution unit 2 and the stock bin unit 3 are sequentially arranged from top to bottom in a frame, the dust removal unit 4 is arranged on one side of the frame and is in communication with the processing unit 1 and the distribution unit 2 respectively, and the electrical control unit 5 is in communication connection with the switches of the processing unit 1 and the distribution unit 2 respectively.

[0036] The processing unit 1 comprises a processing chamber, an air compressor and a spray gun, and mainly plays a role of shot peening.

[0037] The distribution unit 2 comprises an open-top distribution chamber 201, a screen horizontally arranged in the distribution chamber 201, and one end of the screen being able to rotate downwardly by 90° under the drive of a motor. Specifically, the distribution unit 2 comprises the distribution chamber 201, the screen 202, a screen frame 203, a guide hinge 204, a connecting rod 205, a screw 206, a pneumatic cylinder 207, a suction cup 208, a motor 209, a motor base 210, a first bolt 211, a coupling 212, a hinge 213, and a bin door 214.

[0038] The distribution chamber 201 is fixed below the processing chamber of the processing unit 1, the screen 202 is arranged at the bottom of the screen frame 203, the guide hinge 204 is installed on the lower side of the screen frame 203, and the guide hinge 204 is fixedly installed with the screen frame 203 from both sides by using the screw 206. After being fixed, the guide hinge 204 has a blocking structure at the end thereof, so that the guide hinge 204 can be freely opened and closed at a fixed angle (realizing that the broken pellets flow into the waste bin according to the expectation) along with the rotation of the screen frame 203. The limiting part at the rear of the guide hinge 204 can ensure the maximum opening and closing angle.

[0039] The cross section of the connecting rod 205 at both ends is circular, and the cross section thereof in the middle is a combined shape of rectangle and circle. The connecting rod 205 passes through the waist-shaped holes on both sides of the screen frame 203 and the distribution chamber 201, so as to fix the screen frame 203 inside the distribution chamber 201. The height of the cross section of the connecting rod 205 matches the height of the waist-shaped hole of the screen frame 203, the length of the cross section of the connecting rod 205 is smaller than the length of the waist-shaped hole of the screen frame 203, so that the screen frame 203 can rotate along with the connecting rod 205. The length of the cross section of the connecting rod 205 is smaller than the height of the waist-shaped hole of the distribution chamber 201, so that the connecting rod 205 can rotate in the waist-shaped hole of the distribution chamber 201.

[0040] The motor base 210 is fixed to the lower side of the upper side of the distribution chamber 201, and the motor 209 is fixed in the motor base 210 by using the first bolt 211. The motor shaft of the motor 209 is connected with the connecting rod 205 through the coupling 212. The cylinder body of the pneumatic cylinder 207 is fixed to the inner wall of the distribution chamber 201, the piston head of the pneumatic cylinder 207 is fixed with the suction cup 208, the suction cup 208 matches the frame of the screen frame 203 in the horizontal state, the suction cup 208 can be adsorbed on the frame of the screen frame 203 when the piston is elongated, and the frame is the frame without the waist-shaped hole. The suction cup 208 can be separated from the frame of the screen frame 203 when the piston is contracted.

[0041] The bin door 214 is fixed to the side wall opening of the distribution chamber 201 through the hinge 213, and the bin door 214 can be rotated around the hinge 213 to realize opening and closing. Different sizes of screens can be replaced through the bin door 214, so as to realize the function of screening different sizes of pellets.

[0042] The electric control system and the position switch cooperate to control the motor 209 to rotate in the range of 0-90°, thereby driving the connecting rod 205 and the screen frame 203 in the shot separation chamber to rotate in the range of 0-90°, switching the screen 202 between the vertical and horizontal states, and realizing the switching between the shot peening and the shot screening modes; after rotating to the position, the screen 202 and other structures vibrate with the extension and retraction of the cylinder 207 in the screening mode, so that the damaged shot uniformly passes through the screen 202, and a better shot screening effect is obtained.

[0043] The shot bin unit 3 comprises a shot bin 301, a baffle 302, a flow control valve 303, a tee joint 304 and a conduit 305; the shot bin 301 is fixed (by the second bolt 306 and the nut 307) below the shot separation chamber 201, the inside of the shot bin 301 is divided into a waste area and a usable shot area by the vertically arranged baffle, the baffle 302 is inserted on the sidewall of the shot bin 301, the baffle 302 can completely cover the waste area when being inserted, but does not interfere with the usable shot area, the waste area or the usable shot area can be covered by manually inserting and pulling out the baffle 302 and the guide hinge 204 of the shot separation unit, and the mode switching between the complete shot screening and the shot peening is realized; the bottom of the usable shot area is communicated with the conduit 305 for conveying the shot through the tee joint 304, the flow control valve 303 is arranged above the tee joint 304, and the qualified shot is conveyed through the above-mentioned pipeline; the bottom of the waste area is provided with an opening, and the waste obtained by screening is discharged from the opening.

[0044] The dust removal unit 4 is arranged on one side of the rack, and the dust removal inlets are respectively communicated with the processing chamber of the processing unit 1 and the shot separation chamber of the shot separation unit 2, the dust removal unit 4 can timely suck away the dust in the processing chamber of the processing unit 1 and the shot separation chamber of the shot separation unit 2, prevents the dust pollution, and avoids the explosion and other dangers caused by the too high dust concentration.

[0045] The electric control unit 5 is respectively communicated with the switches of the processing unit 1 and the shot separation unit 2. The electric control unit 5 can control the start and stop of the shot peening work and the working start and stop of the dust removal unit 4, and complete the switching between the shot peening and the shot screening functions.

[0046] The installation and fixing scheme of the shot peening machine capable of screening the shot quality is as follows.

[0047] Step 1: as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6As shown, the screen 202 is installed inside the screen frame 203, the guide leaf 204 is installed at the lower side of the screen frame 203, and the guide leaf 204 is fixed and installed with the screen frame 203 from both sides by using the screws 206, after the fixation, the guide leaf 204 can be opened and closed with the rotation of the screen frame 203; the connecting rod 205 passes through the screen frame 203 and the openings at both sides of the distribution chamber 201, and the assembled screen frame 203 is fixed inside the distribution chamber 201, and the assembled screen frame 203 can be rotated with the connecting rod 205; the motor base 210 is fixed at the right plate of the distribution chamber 201, the motor 209 is fixed at the right side of the motor base 210 through the first bolt 211; the shaft coupling 212 connects the connecting rod 205 with the motor shaft of the motor 209; after the above installation is completed, the distribution chamber 201 is fixed at the lower side of the processing chamber of the part 1 processing unit; the bin door 214 is fixed at the front opening of the distribution chamber 201 through the hinge 213, and after the assembly, the bin door 214 can be rotated around the hinge 213 to be opened and closed.

[0048] Step 2: as shown in Figure 7 , the hopper 301 is fixed at the lower side of the distribution chamber 201 through the second bolt 306 and the nut 307; the baffle 302 is inserted into the opening of the hopper 301; the flow meter control valve 303 is fixed at the bottom of the hopper 301, and the tee joint 304 is installed at the bottom of the flow control valve 303, and the connecting pipes 305 are connected at both sides of the tee joint 304.

[0049] The working principle of the pellet quality screening shot blasting machine provided by the application is as follows:

[0050] The pellet quality screening shot blasting machine provided by the application mainly controls the cylinder and the motor rotation, and manually inserts and pulls out the baffle to realize the switching between the shot blasting strengthening mode and the pellet quality screening mode. The specific working process of the device is described as follows. Figure 8 、 Figure 9 .

[0051] Process 1: open the bin door 214, replace the screen 202 with the same size as the pellet size used for processing, close the bin door 214 after the replacement is completed, and tighten the screws on the bin door 214.

[0052] Process 2: when the processing mode of the application is used, the equipment state is as shown in Figure 6 . At this time, the operator needs to insert the baffle 302 into the opening of the hopper 301, press the mode adjustment button, ensure that the motor 209 is rotated to the initial position, so as to ensure that the connecting rod 205, the screen frame 203, the screen 201 and the guide leaf 204 driven by the motor 209 are in the state of hanging down; at the same time, the cylinder rod of the cylinder 207 is retracted, and the suction cup 208 is separated from the screen frame 203.

[0053] Process 3: After the above device state conversion is completed, the shot pellets for processing are poured into the shot blasting machine, the workpieces in the processing chamber are placed, the processing chamber door in the processing unit 1 is closed, the dust removal unit 4 is started, and the shot peening is started. During processing, the pellets flow into the distribution chamber 201 through the holes in the bottom plate of the processing chamber. Due to the natural sagging of the screen 202, the screen frame 203 and other structures in the distribution chamber 201, the pellets cannot be intercepted, and the pellets directly flow out to the pellet bin 301, and then flow into the available pellet area of the pellet bin 301 through the baffle 302. The flowing pellets are used for shot peening again through the flow control valve 303, the three-way valve 304 and the conduit 305.

[0054] Process 4: After the shot peening is completed, if the screening mode is used, the baffle 302 is manually pulled out, the mode switching button is pressed, the motor 209 rotates and rotates the connecting rod 205 together, and simultaneously rotates the screen frame 203, the screen 202 and the guide hinge 204. When the motor rotates to 90°, the position switch installed at the corresponding position is closed, and the motor stops rotating. In the current position, the screen 202 and the screen frame 203 are in a horizontal position, the guide hinge 204 naturally sags and opens to a certain angle, and the state of the device after the above operation is as shown in Figure 7

[0055] Process 5: The operator starts the shot blasting machine, and the pellets intermittently flow into the distribution chamber 201. At this time, the piston of the air cylinder 207 is elongated and the suction cup 208 is adsorbed on the frame of the screen frame 203. The air cylinder rod of the air cylinder 207 reciprocatingly extends and retracts, drives the screen frame 203, the screen 202 and the guide hinge 204 to reciprocate along the horizontal direction, and screens out the pellets with damaged and particle size smaller than the aperture of the screen 202. The inclined surface of the guide hinge 204 can cover the top of the available pellet bin of the pellet bin 301. Specifically, the guide hinge 204 is located above the available pellet bin and can block the opening above the available pellet bin, so as to ensure that the screened damaged pellets can flow into the waste bin of the pellet bin 301 along the guide of the guide hinge 204.

[0056] Process 6: When the operator finds that the screen 202 is blocked and the device cannot complete the screening work, the baffle 302 is manually inserted, and the stop button is pressed. At this time, the motor 209 is rotated from 90° to 0°, and the device repeats the operation of process 2. Since the front side (the side away from the connecting rod 205) of the screen frame 203 is an inclined surface, the pellets blocked in the screen 202 can flow out along the inclined surface and flow into the available pellet bin of the pellet bin 301 through the baffle 302.

[0057] Process 7: When the pellets on the screen 202 are emptied, the operations of processes 4 to 6 are repeated until the pellet screening process is completed. The operator opens the bottom opening of the pellet bin 301, and pours out the screened waste. After the screening is completed, new shot pellets for shot peening can be added again to use the device for shot peening. ​

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A shot machine capable of shot quality screening, characterized by, It includes processing unit (1), material distribution unit (2), stock bin unit (3), dust removal unit (4) and electrical control unit (5), the processing unit (1), material distribution unit (2) and stock bin unit (3) are sequentially arranged from top to bottom in the rack, the dust removal unit (4) is arranged on one side of the rack, and is communicated with the processing unit (1) and the material distribution unit (2) respectively, and the electrical control unit (5) is communicated and connected with the switch of the processing unit (1) and the material distribution unit (2) respectively; The material distribution unit (2) includes a material distribution chamber (201) with upper and lower openings, a screen (202) is horizontally arranged in the material distribution chamber (201), and one end of the screen (202) can be rotated downward by 90 degrees under the drive of a motor; The material distribution unit (2) further includes a screen frame (203), a guide hinge (204), a connecting rod (205), a screw (206), an air cylinder (207), a suction cup (208), a motor (209), a motor base (210), a shaft coupling (212), a hinge (213) and a bin door (214); The material distribution chamber (201) is fixed below the processing chamber of the processing unit (1), the screen (202) is arranged at the bottom of the screen frame (203), the guide hinge (204) is installed on the lower side of the screen frame (203), and the guide hinge (204) is fixedly installed with the screen frame (203) from both sides by using the screw (206), one end of the guide hinge (204) close to the screen frame (203) is provided with a blocking structure, and the guide hinge (204) can be freely opened and closed at a fixed angle with the rotation of the screen frame (203); The connecting rod (205) is circular in cross section at both ends and rectangular and circular in combination in the middle section, the connecting rod (205) passes through the waist-shaped holes on both sides of the screen frame (203) and the material distribution chamber (201), and the screen frame (203) is fixed inside the material distribution chamber (201), and the screen frame (203) can rotate with the connecting rod (205); The motor base (210) is fixed to the lower side of the upper side of the material distribution chamber (201), and the motor (209) is fixed in the motor base (210); the motor shaft of the motor (209) is connected with the connecting rod (205) through the shaft coupling (212); The cylinder body of the air cylinder (207) is fixed on the inner wall of the material distribution chamber (201), the piston head of the air cylinder (207) is fixed with the suction cup (208), the suction cup (208) cooperates with the frame of the screen frame (203) in the horizontal state, the suction cup (208) can be adsorbed on the frame of the screen frame (203) when the piston is elongated, and the suction cup (208) can be separated from the frame of the screen frame (203) when the piston is retracted; the sidewall opening of the material distribution chamber (201) is provided with the bin door (214). The hopper unit (3) comprises a hopper (301), a baffle (302), a flow control valve (303), a tee (304) and a conduit (305); the hopper (301) is fixed below the distribution chamber (201), the inside of the hopper (301) is divided into a waste area and a usable pellet area by a vertically arranged baffle, the baffle (302) is inserted on the sidewall of the hopper (301), when the baffle (302) is inserted, it can completely cover the waste area but does not interfere with the usable pellet area, by manually inserting and pulling the baffle (302) and cooperating with the guide hinge (204) of the distribution unit, the covering of the waste area or the usable pellet area can be realized; the bottom of the usable pellet area is communicated with the conduit (305) for conveying pellets through the tee (304), the flow control valve (303) is arranged above the tee (304); the bottom of the waste area is provided with an opening.

2. The pellet mass screening capable pelletizer according to claim 1, wherein The height of the cross section of the connecting rod (205) cooperates with the height of the waist-shaped hole of the screen frame (203), the length of the cross section of the connecting rod (205) is smaller than the length of the waist-shaped hole of the screen frame (203); the length of the cross section of the connecting rod (205) is smaller than the height of the waist-shaped hole of the distribution chamber (201).

3. The pellet mass screening shot machine of claim 1, wherein The suction cup (208) can be adsorbed on the frame of the screen frame (203), which is a frame without a waist-shaped hole.

4. The pellet mass screening capable pelletizer according to claim 1, wherein The bin door (214) is fixed at the opening of the sidewall of the distribution chamber (201) through the hinge (213), the bin door (214) can rotate around the hinge (213) to realize opening and closing.

5. The pellet mass screening capable pelletizer according to claim 1, wherein The dust removal unit (4) is arranged on one side of the rack, and the dust removal inlets are respectively communicated with the processing chamber of the processing unit (1) and the distribution chamber of the distribution unit (2).

6. The pellet mass screening capable pelletizer according to claim 1, wherein The electrical control unit (5) is respectively communicated with the air compressor of the processing unit (1) and the motor of the distribution unit (2).

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