A shot blasting separating device for precision sand castings

Abstract

The utility model discloses a kind of for precision sand mould castings's throw pellet separating device, including separating tank, cleaning device, screening device;Separating tank top is equipped with feed inlet, bottom is equipped with support, separating tank side is equipped with access hole, and partition is located separating tank inboard fixedly connected in separating tank below;Screening device is located between feed inlet and partition;Cleaning device is equipped with several groups, and several groups cleaning device are located screening device side and separating tank fixed connection;Pellet enters separating tank in feed inlet, after screening by screening device, again into cleaning device to clean, remove dust and chippings adhered on the surface of pellet.The utility model removes the impurity and excessively worn pellet mixed in pellet by screening device, then size size qualified pellet again into cleaning device to clean, remove dust and chippings adhered on the surface of pellet.

Description

Technical Field

[0001] This utility model belongs to the field of shot blasting separation technology, and specifically relates to a shot blasting separation device for precision sand castings. Background Technology

[0002] To improve the quality and performance of precision sand castings, shot blasting is usually required after casting. However, after the shot is thrown at high speed onto the surface of the precision sand casting to remove burrs, rust, and other surface impurities, the rust, burrs, and other debris impacted from the surface of the precision sand casting will enter the shot hopper along with the shot. Therefore, the shot needs to be separated and cleaned so that the steel shot can be reused.

[0003] A search revealed a shot blasting machine shot slag separation device with the existing technology announcement number CN 220215641 U. This device uses two rotating motors to control the rotating frame and the stirring rod to rotate in opposite directions, thereby rolling and stirring the shot and separating burrs and other debris mixed in the shot. However, this device requires repeated "stop-unload-load-start-clean" operations to separate and clean a fixed amount of shot, and the device cannot clean the debris or dust attached to the shot, resulting in a decrease in the shot cleaning ability during shot blasting or causing damage to the surface of the casting.

[0004] A search revealed a shot blasting machine shot separation device with prior art announcement number CN 222755205 U. This device uses a vibrating motor to vibrate the feed inlet, causing the shot to slide sequentially through multiple conveying pipes to a filter plate. The shot is then guided by multiple grooves on the filter plate with filter holes of different diameters, causing the shot to roll in a fixed direction and fall into a storage space separated by partitions. The shot then enters a cleaning device through multiple connecting pipes, thus achieving shot separation. However, this device also has the problem of not being able to clean the debris or dust attached to the shot. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a shot blasting separation device for precision sand castings. This invention uses a screening device to screen out impurities and excessively worn shot mixed in with the shot. Then, shot of qualified size enters a cleaning device for cleaning to remove dust and debris attached to the surface of the shot.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A shot blasting separation device for precision sand castings includes a separation box, a cleaning device, and a screening device. The separation box has a feed inlet at the top and a support at the bottom. An inspection port is located on one side of the separation box, and a partition plate is fixedly connected to the bottom of the separation box inside. An exhaust fan is fixedly connected to the top of the inspection port, and an exhaust pipe I is fixedly connected to one side of the exhaust fan. A filter screen is provided at the interface between the inspection port and the exhaust fan. The screening device is located between the feed inlet and the partition plate. Several sets of cleaning devices are provided, and these sets are fixedly connected to the separation box on one side of the screening device. The shot enters the separation box through the feed inlet, is screened by the screening device, and then enters the cleaning device for cleaning to remove dust and debris adhering to the surface of the shot.

[0008] The cleaning device includes a guide trough I, a discharge trough, a dust removal mechanism, a sleeve, a connecting cylinder I, a connecting hole I, a connecting hole II, a through groove I, a through groove II, a through groove III, a rotating cylinder, a motor, and a protective cover. The sleeve has connecting holes I and II at both ends, and both ends are fixedly connected to the separation box via the connecting cylinder I. The two ends of the feed inlet of the guide trough I are fixedly connected to the separation box, and the discharge outlet is fixedly connected to the through groove II. The feed inlet of the discharge trough is fixedly connected to the through groove III, and the discharge outlet passes through the through groove on the separation box and connects to the pellet storage box. The dust removal mechanism is fixedly connected to the through groove I, and the rotating cylinder is rotatably connected to the inside of the sleeve. The motor is fixedly connected to the outside of the separation box via a motor mount, and the protective cover is located outside the motor and fixedly connected to the separation box.

[0009] The rotating cylinder is equipped with a connecting pipe, a connecting shaft, a cleaning groove, an exhaust pipe II, and a rotating joint; the outer side of the rotating cylinder is provided with several cleaning grooves, and the cleaning grooves are provided with several filter holes; the connecting shaft is rotatably connected to the connecting hole I, and the exhaust pipe II is rotatably connected to the connecting hole II, and one end of the connecting shaft is fixedly connected to the rotating cylinder, and the other end passes through the through hole on the separation box and is fixedly connected to the motor output end; one end of the exhaust pipe II is fixedly connected to the rotating cylinder, and the other end is rotatably connected to one end of the rotating joint; the connecting pipe is fixedly connected to the separation box, and one end of the connecting pipe is rotatably connected to the other end of the rotating joint, and the other end is connected to the air pump through a connecting pipe.

[0010] The dust removal mechanism includes a connecting box, an air inlet pipe, a sliding box, an air inlet, a guide shaft, an air outlet groove, and an electric pusher cylinder I. The connecting box is fixedly connected to the through groove I, and the air inlet pipe is fixedly connected to the top of the connecting box. One end of the air inlet pipe passes through a connecting pipe and through a through hole on the separation box to connect to the air pump. The sliding box is slidably connected to a pair of guide shafts that are symmetrically fixed inside the connecting box via a connecting seat. The air inlet at the top of the sliding box is fixedly connected to the other end of the air inlet pipe via a telescopic hose. The bottom of the sliding box is provided with several air outlet grooves, and several sets of bristles are located between adjacent air outlet grooves and fixedly connected to the sliding box. The electric pusher cylinder I is located between the connecting box and the sliding box, and the cylinder body of the electric pusher cylinder I is fixedly connected to the connecting box via a connecting seat, and the extended end is fixedly connected to the sliding box via a connecting seat.

[0011] The screening device includes a screening box, a telescopic cylinder, a connecting cylinder II, an electric pusher cylinder II, and support rods. Several telescopic cylinders and connecting cylinders II are provided, with several connecting cylinders II symmetrically fixedly connected to both sides of the separation box, and several telescopic cylinders symmetrically fixedly connected to both sides of the screening box, with one end of each telescopic cylinder slidably connected to the connecting cylinder II. Several electric pusher cylinders II are provided, with the cylinder body of each electric pusher cylinder II fixedly connected to the connecting cylinder II, and the extended end fixedly connected to the telescopic cylinder. Several support rods are provided, located on the other two sides of the screening box and fixedly connected to the separation box.

[0012] The screening box is provided with a sliding groove, screen plate I, screen plate II, screen plate III, and guide chute II; the screening box is slidably connected to the support rod through several sliding grooves, and screen plate I, screen plate II, and screen plate III are sequentially inclined and fixedly connected inside the screening box in order from top to bottom; several guide chute II are provided, respectively located above the feed inlet of guide chute I in several sets of cleaning devices and fixedly connected to one side of screen plate I, screen plate II, and screen plate III.

[0013] The aperture diameters of the sieve holes on sieve plate I, sieve plate II, and sieve plate III decrease sequentially.

[0014] The diameter of the filter holes in the cleaning tank is smaller than the diameter of the sieve holes on the sieve plate III.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] 1) The cleaning device uses a motor-driven rotating drum in conjunction with a dust removal mechanism to clean the dust or debris adhering to the surface of the shot, preventing residual debris or dust from remaining on the surface of the shot, which would reduce the cleaning ability of the shot during the shot blasting process.

[0017] 2) With the cooperation of the cleaning device, the air pump, and the air pump, the air circulates in the cleaning device, thereby removing the dust or debris removed by the dust removal mechanism from the cleaning device, preventing the dust or debris from adhering to the equipment, and thus ensuring the stability of the device's cleaning effect on the shot.

[0018] 3) By combining the screening and cleaning devices, continuous processing of the pellets can be achieved, thereby reducing downtime and improving the efficiency and stability of the pellet processing. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of a shot blasting separation device for precision sand castings according to this utility model;

[0020] Appendix Figure 2 It is attached Figure 1 Schematic diagram of the middle separation box;

[0021] Appendix Figure 3 It is attached Figure 1 Schematic diagram showing the location and structure of the intermediate screening device and the cleaning device;

[0022] Appendix Figure 4 It is attached Figure 1 Schematic diagram of the intermediate screening device;

[0023] Appendix Figure 5 It is attached Figure 1 A schematic diagram of the cleaning device.

[0024] Appendix Figure 6 It is attached Figure 1 Schematic diagram of the internal structure of the cleaning device;

[0025] Appendix Figure 7 It is attached Figure 1 Schematic diagram of the middle sleeve;

[0026] Appendix Figure 8 It is attached Figure 1 Schematic diagram of the connection structure between the middle sleeve and the rotating cylinder;

[0027] Appendix Figure 9 It is attached Figure 1 Schematic diagram of the dust removal mechanism;

[0028] In the diagram: 1. Separation box; 101. Feed inlet; 102. Inspection port; 1021. Exhaust fan; 1022. Exhaust pipe I; 103. Support; 104. Partition; 2. Cleaning device; 201. Guide chute I; 202. Discharge chute; 203. Dust removal mechanism; 2031. Connecting box; 2032. Air inlet pipe; 2033. Sliding box; 2034. Air inlet; 2035. Guide shaft; 2036. Air outlet groove; 2037. Electric pusher cylinder I; 204. Sleeve; 2041. Connecting cylinder I; 2042. Connecting hole I; 2043. Connecting hole II; 2044. Through groove I; 2045. Through groove II; 2046. Through groove III; 205. Rotating cylinder; 2051. Connecting pipe; 2052. Connecting shaft; 2053. Cleaning groove; 2054. Exhaust pipe II; 2055. Rotary joint; 206. Motor; 207. Protective cover; 3. Screening device; 301. Screening box; 3011. Sliding groove; 3012. Screen plate I; 3013. Screen plate II; 3014. Screen plate III; 3015. Guide chute II; 302. Telescopic cylinder; 303. Connecting cylinder II; 304. Electric pusher cylinder II; 305. Support rod. Detailed Implementation

[0029] To facilitate understanding by those skilled in the art, the following is in conjunction with the appendix. Figure 1-9 The technical solution of this utility model will be further described in detail below.

[0030] A shot blasting separation device for precision sand casting includes a separation box 1, a cleaning device 2, and a screening device 3. The separation box 1 has a feed inlet 101 at the top and a support 103 at the bottom. A maintenance port 102 is located on one side of the separation box 1, and a partition 104 is fixedly connected to the bottom of the separation box 1 inside the separation box 1. An exhaust fan 1021 is fixedly connected to the top of the maintenance port 102, and an exhaust pipe 1022 is fixedly connected to one side of the exhaust fan 1021. A filter screen is provided at the interface between the maintenance port 102 and the exhaust fan 1021. The screening device 3 is located between the feed inlet 101 and the partition 104. The cleaning device 2 consists of several sets, and these sets are located on one side of the screening device 3 and fixedly connected to the separation box 1. The shot enters the separation box 1 through the feed inlet 101, is screened by the screening device 3, and then enters the cleaning device 2 for cleaning to remove dust and debris adhering to the surface of the shot.

[0031] The cleaning device 2 includes a guide trough I 201, a discharge trough 202, a dust removal mechanism 203, a sleeve 204, a connecting cylinder I 2041, a connecting hole I 2042, a connecting hole II 2043, a through groove I 2044, a through groove II 2045, a through groove III 2046, a rotating cylinder 205, a motor 206, and a protective cover 207; the sleeve 204 has connecting holes I 2042 and II 2043 at both ends, and the two ends of the sleeve 204 are fixedly connected to the separation box 1 through the connecting cylinder I 2041; the guide trough I The two ends of the feed inlet 201 are fixedly connected to the separation box 1, and the discharge port is fixedly connected to the through groove II 2045; the feed inlet of the discharge groove 202 is fixedly connected to the through groove III 2046, and the discharge port passes through the through groove on the separation box 1 and is connected to the pellet storage box; the dust removal mechanism 203 is fixedly connected to the through groove I 2044, and the rotating cylinder 205 is rotatably connected to the inside of the sleeve 204; the motor 206 is fixedly connected to the outside of the separation box 1 through the motor base, and the protective cover 207 is located outside the motor 206 and fixedly connected to the separation box 1.

[0032] The rotating cylinder 205 is provided with a connecting pipe 2051, a connecting shaft 2052, a cleaning groove 2053, an exhaust pipe II 2054, and a rotating joint 2055. Several cleaning grooves 2053 are provided on the outer side of the rotating cylinder 205, and several filter holes are provided within each cleaning groove 2053. The connecting shaft 2052 is rotatably connected to connecting hole I 2042, and the exhaust pipe II 2054 is rotatably connected to connecting hole II 2043. One end of the connecting shaft 2052 is fixedly connected to the rotating cylinder 205, and the other end passes through a through hole on the separation box 1 and is fixedly connected to the output end of the motor 206. One end of the exhaust pipe II 2054 is fixedly connected to the rotating cylinder 205, and the other end is rotatably connected to one end of the rotating joint 2055. The connecting pipe 2051 is fixedly connected to the separation box 1, and one end of the connecting pipe 2051 is rotatably connected to the other end of the rotating joint 2055, and the other end is connected to a suction pump via a connecting pipe.

[0033] The dust removal mechanism 203 includes a connecting box 2031, an air inlet pipe 2032, a sliding box 2033, an air inlet 2034, a guide shaft 2035, an air outlet groove 2036, and an electric pusher cylinder I 2037. The connecting box 2031 is fixedly connected to the through groove I 2044, and the air inlet pipe 2032 is fixedly connected to the top of the connecting box 2031. One end of the air inlet pipe 2032 passes through a connecting pipe and through a through hole on the separation box 1 to connect to the air pump. The sliding box 2033 is connected to a pair of guide shafts 2035 symmetrically fixed inside the connecting box 2031 via a connecting seat. 035 Sliding connection, the air inlet 2034 at the top of the sliding box 2033 is fixedly connected to the other end of the air inlet pipe 2032 through a telescopic hose, the bottom of the sliding box 2033 is provided with several air outlet grooves 2036, and several sets of bristles are located between adjacent air outlet grooves 2036 and fixedly connected to the sliding box 2033; the electric push cylinder I 2037 is located between the connecting box 2031 and the sliding box 2033, and the cylinder body of the electric push cylinder I 2037 is fixedly connected to the connecting box 2031 through a connecting seat, and the extended end is fixedly connected to the sliding box 2033 through a connecting seat.

[0034] The screening device 3 includes a screening box 301, a telescopic cylinder 302, a connecting cylinder II 303, an electric pusher cylinder II 304, and a support rod 305. Several telescopic cylinders 302 and connecting cylinders II 303 are provided, with several connecting cylinders II 303 symmetrically fixedly connected to both sides of the separation box 1, and several telescopic cylinders 302 symmetrically fixedly connected to both sides of the screening box 301, with one end of each telescopic cylinder 302 slidably connected to the connecting cylinder II 303. Several electric pusher cylinders II 304 are provided, with the cylinder body of each electric pusher cylinder II 304 fixedly connected to the connecting cylinder II 303, and the extended end fixedly connected to the telescopic cylinder 302. Several support rods 305 are provided, located on the other two sides of the screening box 301 and fixedly connected to the separation box 1.

[0035] The screening box 301 is provided with a sliding groove 3011, a screen plate I 3012, a screen plate II 3013, a screen plate III 3014, and a guide chute II 3015. The screening box 301 is slidably connected to the support rod 305 through several sliding grooves 3011, and the screen plates I 3012, II 3013, and III 3014 are sequentially inclined and fixedly connected inside the screening box 301 in order from top to bottom. Several guide chute II 3015 are provided, respectively located above the feed inlet of the guide chute I 201 in several sets of cleaning devices 2 and fixedly connected to one side of the screen plates I 3012, II 3013, and III 3014.

[0036] The aperture diameters of the sieve holes on sieve plate I 3012, sieve plate II 3013, and sieve plate III 3014 decrease sequentially.

[0037] The diameter of the filter holes in the cleaning groove 2053 is smaller than the diameter of the sieve holes on the sieve plate Ⅲ3014.

[0038] A shot blasting separation device for precision sand castings, the working process of which is as follows:

[0039] The feed inlet 101 at the top of the separation box 1 is connected to the shot outlet of the shot blasting machine. When the used shot falls through the feed inlet 101 onto the screening box 301 in the screening device 3, the electric push cylinders II 304 in the connecting cylinders II 303 on both sides of the separation box 1 are controlled to run in reverse simultaneously, driving the screening box 301 to slide back and forth along the support rod 305, so that the screen plates I 3012, II 3013, and III 3014 screen the shot entering the screening box 301, thereby screening the shot smaller than the standard and the rust, burrs and other debris removed during the shot blasting process between the inspection port 102 and the partition plate 104 at the bottom of the separation box 1. After long-term use, the device can be cleaned or maintained periodically through the inspection port 102. The exhaust fan 1021 can draw air from the separation box 1, thereby filtering the dust generated by the screening device 3 during the screening process.

[0040] During the screening process, shot with a diameter larger than the sieve apertures on sieve plates I 3012, II 3013, and III 3014 moves along sieve plates I 3012, II 3013, and III 3014 to the guide chute II 3015, and then enters the corresponding guide chute I 201 in the cleaning device 2. Simultaneously, the shot in guide chute I 201 fills the cleaning chute 2053 under gravity. Then, motor 206 connects to the connecting shaft 205... 2. Control the rotating drum 205 to rotate the shot material filled in the cleaning trough 2053; simultaneously turn on the air pump, and use suction to force some of the dust and debris attached to the shot material to pass through the filter holes on the cleaning trough 2053—rotating drum 205—exhaust pipe II 2054—rotating joint 2055—connecting pipe 2051 into the recycling and processing device; when the motor 206 controls the rotating drum 205 to rotate the cleaning trough 2053 filled with shot material to the bottom, the air pump is turned on, allowing outside air to pass through sequentially. The shot is blown into the cleaning tank 2053 through the air inlet pipe 2032, air inlet 2034, sliding box 2033, and air outlet 2036. Simultaneously, the electric pusher cylinder I 2037 is activated, controlling the sliding box 2033 to reciprocate along the guide shaft 2035, thereby brushing the shot in the cleaning tank 2053. The bristles on the sliding box 2033 remove firmly attached debris and dust from the surface of the shot. Simultaneously, the removed debris and dust are rapidly removed under the combined action of the air pump and air outlet. The pellets pass through the filter holes on the cleaning tank 2053, the rotating drum 205, the exhaust pipe II 2054, the rotating joint 2055, and the connecting pipe 2051 into the recycling and processing device. The motor 206 keeps running normally and controls the rotating drum 205 to drive the pellets cleaned by the dust removal mechanism 203 to rotate to the discharge trough 202. The pellets cleaned by the dust removal mechanism 203 fall from the cleaning tank 2053 into the discharge trough 202 and pass through the discharge trough 202 into the pellet storage box to wait for the next use.

[0041] In the description of this utility model, unless otherwise stated, "a number" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In summary, the electronic or electrical components, including but not limited to electric cylinders and motors, are existing components that were custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this utility model.

[0043] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A shot blasting separation device for precision sand castings, comprising a separation box, a cleaning device, and a screening device; the separation box has a feed inlet at the top, a support at the bottom, an inspection port on one side, and a partition plate fixedly connected to the bottom of the separation box inside; the screening device is located between the feed inlet and the partition plate; the cleaning device comprises several sets, and the several sets of cleaning devices are located on one side of the screening device and fixedly connected to the separation box; the shot enters the separation box through the feed inlet, is screened by the screening device, and then enters the cleaning device for cleaning to remove dust and debris adhering to the surface of the shot; Its features The cleaning device includes a guide trough I, a discharge trough, a dust removal mechanism, a sleeve, a connecting cylinder I, a connecting hole I, a connecting hole II, a through groove I, a through groove II, a through groove III, a rotating cylinder, a motor, and a protective cover. The sleeve has connecting holes I and II at both ends, and both ends are fixedly connected to the separation box via the connecting cylinder I. The two ends of the feed inlet of the guide trough I are fixedly connected to the separation box, and the discharge outlet is fixedly connected to the through groove II. The feed inlet of the discharge trough is fixedly connected to the through groove III, and the discharge outlet passes through the through groove on the separation box and connects to the pellet storage box. The dust removal mechanism is fixedly connected to the through groove I, and the rotating cylinder is rotatably connected inside the sleeve. The motor is connected via a motor... The base is fixedly connected to the outside of the separation box; the rotating cylinder is provided with a connecting pipe, a connecting shaft, a cleaning groove, an exhaust pipe II, and a rotating joint; the outside of the rotating cylinder is provided with several cleaning grooves, and the cleaning grooves are provided with several filter holes; the connecting shaft is rotatably connected to the connecting hole I, the exhaust pipe II is rotatably connected to the connecting hole II, and one end of the connecting shaft is fixedly connected to the rotating cylinder, and the other end passes through the through hole on the separation box and is fixedly connected to the motor output end; one end of the exhaust pipe II is fixedly connected to the rotating cylinder, and the other end is rotatably connected to one end of the rotating joint; the connecting pipe is fixedly connected to the separation box, and one end of the connecting pipe is rotatably connected to the other end of the rotating joint, and the other end is connected to the air pump through a connecting pipe; The screening device includes a screening box, a telescopic cylinder, a connecting cylinder II, an electric pusher cylinder II, and support rods. Several telescopic cylinders and connecting cylinders II are provided, with several connecting cylinders II symmetrically fixedly connected to both sides of the separation box, and several telescopic cylinders symmetrically fixedly connected to both sides of the screening box, with one end of each telescopic cylinder slidably connected to the connecting cylinder II. Several electric pusher cylinders II are provided, with the cylinder body of each electric pusher cylinder II fixedly connected to the connecting cylinder II, and the extended end fixedly connected to the telescopic cylinder. Several support rods are provided, located on the other two sides of the screening box and fixedly connected to the separation box.

2. The shot blasting separation device for precision sand castings according to claim 1, characterized in that... The dust removal mechanism includes a connecting box, an air inlet pipe, a sliding box, an air inlet, a guide shaft, an air outlet groove, and an electric pusher cylinder I. The connecting box is fixedly connected to the through groove I, and the air inlet pipe is fixedly connected to the top of the connecting box. One end of the air inlet pipe passes through a connecting pipe and through a through hole on the separation box to connect to the air pump. The sliding box is slidably connected to a pair of guide shafts that are symmetrically fixed inside the connecting box via a connecting seat. The air inlet at the top of the sliding box is fixedly connected to the other end of the air inlet pipe via a telescopic hose. The bottom of the sliding box is provided with several air outlet grooves, and several sets of bristles are located between adjacent air outlet grooves and fixedly connected to the sliding box. The electric pusher cylinder I is located between the connecting box and the sliding box, and the cylinder body of the electric pusher cylinder I is fixedly connected to the connecting box via a connecting seat, and the extended end is fixedly connected to the sliding box via a connecting seat.

3. The shot blasting separation device for precision sand castings according to claim 1, characterized in that... The screening box is provided with a sliding groove, screen plate I, screen plate II, screen plate III, and guide chute II; the screening box is slidably connected to the support rod through several sliding grooves, and screen plate I, screen plate II, and screen plate III are sequentially inclined and fixedly connected inside the screening box in order from top to bottom; several guide chute II are provided, respectively located above the feed inlet of guide chute I in several sets of cleaning devices and fixedly connected to one side of screen plate I, screen plate II, and screen plate III.

4. The shot blasting separation device for precision sand castings according to claim 1, characterized in that... An exhaust fan is fixedly connected to the top of the inspection port, and an exhaust pipe I is fixedly connected to one side of the exhaust fan. A filter screen is provided at the interface between the inspection port and the exhaust fan.

5. A shot blasting separation device for precision sand castings according to claim 1, characterized in that... The protective cover on the outside of the motor is fixedly connected to the separation box.

6. A shot blasting separation device for precision sand castings according to claim 3, characterized in that... The aperture diameters of the sieve holes on sieve plate I, sieve plate II, and sieve plate III decrease sequentially.

7. A shot blasting separation device for precision sand castings according to claim 1, characterized in that... The diameter of the filter holes in the cleaning tank is smaller than the diameter of the sieve holes on the sieve plate III.

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