A shot separator for a hook-type shot blasting machine

Abstract

The utility model discloses a kind of shot separators for hook type shot blasting machine, specifically related to shot blasting machine field, including separation tank, the top rear side of separation tank is provided with feeding mechanism, the inside of separation tank is provided with screening mechanism, the bottom of screening mechanism is fixedly connected with sieve plate that is placed obliquely, the top of separation tank is fixedly installed with fan, the front side end of fan is installed with flat flow guide cover. By starting fan, and after steel shot used by shot blasting machine is poured into feeding frame inside in batches, steel shot is guided to discharge groove under gravity along the surface of filter screen rolling, and because the width diameter of discharge groove is slightly larger than steel shot, the steel shot discharged in single time is less, and discharge groove is rectangular, so that the steel shot or broken block discharged is in a straight line shape when discharging;And fan when blowing to steel shot arranged in order, steel shot or broken block cannot be effectively blown away by fan due to the problem that steel shot is covered between steel shot and is far away from fan;So as to improve the effect of air selection.

Description

Technical Field

[0001] This utility model relates to the field of shot blasting machine technology, specifically a shot separator for a hook-type shot blasting machine. Background Technology

[0002] Hook-type shot blasting machines suspend castings, steel structures, and other workpieces via hooks, and use high-speed steel shot to impact the workpiece surface, quickly removing rust and oxide scale, thus achieving surface cleaning. However, repeated use of steel shot can lead to wear and breakage. Broken shot reduces cleaning efficiency and accelerates wear on the shot blaster blades. Therefore, it is necessary to screen and separate broken shot from qualified steel shot to ensure equipment lifespan and cleaning effectiveness.

[0003] Chinese patent publication CN222971920U discloses a hook-type shot separator for shot blasting machines, filed on July 16, 2024. This patented technology uses rotating fan blades to blow air through a ventilation mesh into the isolation hood, expelling steel shot and lightweight impurities from the waste material outside the hood. The lightweight impurities then slide out of the separation box through the inclined surface of the waste discharge plate. After preliminary cleaning, the steel shot and waste fall onto the top of the filter screen, reducing the amount of steel shot on the screen and preventing clogging during screening. However, in the aforementioned case, due to the large amount of steel shot discharged at once, during air-powered screening, steel shot near the fan side may overlap with steel shot or fragments away from the fan side, affecting the effectiveness of air-powered screening. Therefore, the inventors have provided a hook-type shot separator for shot blasting machines to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this utility model is to provide a shot separator for a hook-type shot blasting machine, so as to achieve the effect of preventing steel shot from overlapping each other and improving the effect of air screening.

[0005] The objective of this utility model can be achieved through the following technical solutions: A shot separator for a hook-type shot blasting machine includes a separation box. A feeding mechanism is provided on the top rear side of the separation box, and a screening mechanism is provided on the inner side of the separation box. An inclined screen plate is fixedly connected to the bottom of the screening mechanism. A fan is fixedly installed on the top of the separation box, and a flat guide shroud is installed on the front end of the fan. The feeding mechanism includes a feeding frame fixedly connected to the top of the separation box by anti-loosening bolts. A pair of partition plates arranged in a front-to-back manner are fixedly connected inside the feeding frame. A pair of mirror-symmetrical and inclined filter screens are fixedly connected to the top of the two partition plates. The top of the filter screens is fixedly connected to the inner wall of the feeding frame. A discharge trough is formed between the two partition plates. The width of the discharge trough is slightly larger than the diameter of the steel shot.

[0006] As a further improvement of this utility model: a vibration motor is fixedly installed on the right side of the feeding frame, and an anti-vibration pad is provided at the connection between the feeding frame and the separation box.

[0007] As a further embodiment of this utility model: a gap is formed between the partition plate and the inner wall of the adjacent feed frame, and a trapezoidal box is provided below the gap. The four sides of the trapezoidal box are inclined towards the center. The top of the trapezoidal box is fixedly connected to the top of the separation box, and the bottom of the trapezoidal box is fixedly connected to the discharge pipe.

[0008] As a further embodiment of this utility model: the screening mechanism further includes a contact plate fixedly connected to the rear side of the sieve plate, the contact plate is made of alloy material and a buffer pad is provided on the top of the contact plate, the buffer pad is made of low-resilience polyurethane foam material; the contact plate is located directly below the discharge trough.

[0009] As a further embodiment of this utility model: a residual material box is provided on the rear side inside the separation box, the residual material box is located below the discharge port of the discharge pipe, a receiving box is placed at the bottom of the screen plate, and a partition plate is fixedly connected inside the receiving box. The partition plate divides the receiving box into front and rear parts, and the partition plate is flush with the front side of the screen plate.

[0010] As a further improvement of this utility model, a second vibration motor is fixedly installed on the right side of the sieve plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This hook-type shot blasting machine uses a shot separator. By starting the fan, the steel shot used in the shot blasting machine is poured into the feed frame in batches. The steel shot is guided by gravity to the discharge chute by rolling along the surface of the filter screen. Since the diameter of the discharge chute is slightly larger than the steel shot, the amount of steel shot discharged at one time is smaller. Moreover, the discharge chute is rectangular, so the discharged steel shot or fragments are discharged in a straight line. When the fan blows the orderly arranged steel shot, there is no problem of steel shot overlapping, which would prevent steel shot or fragments far from the fan from being effectively blown away. This improves the effect of air screening.

[0012] In addition, the shot separator used in this hook-type shot blasting machine guides the steel shot to roll towards the discharge chute under the guidance of the inclined surface of the filter screen. During the rolling process, some fine steel shot fragments will be directly discharged through the mesh of the filter screen to a specific area. Qualified steel shot or large impurities, because their size is larger than the mesh of the filter screen, are guided to the discharge chute by the filter screen, realizing the grading process of first screening out fine fragments and then air-separating large pieces, thereby improving the overall separation accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a shot separator for a hook-type shot blasting machine. Figure 2 This is a schematic cross-sectional view of the overall structure of a shot separator for a hook-type shot blasting machine. Figure 3 This is a schematic cross-sectional view of the feeding mechanism in a shot separator for a hook-type shot blasting machine. Figure 4 This is a schematic cross-sectional view of a portion of the shot separator used in a hook-type shot blasting machine.

[0014] In the diagram: 10. Separation box; 20. Feeding mechanism; 201. Feeding frame; 202. Anti-vibration pad; 203. Divider plate; 204. Filter screen; 205. Vibration motor 1; 206. Trapezoidal box; 207. Discharge pipe; 30. Screening mechanism; 301. Fan; 302. Screen plate; 303. Receiving box; 304. Divider plate; 305. Residue box; 306. Contact plate; 307. Buffer pad. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1-4 As shown, a shot separator for a hook-type shot blasting machine includes a separation box 10. A feeding mechanism 20 is provided on the rear top side of the separation box 10, and a screening mechanism 30 is provided on the inner side of the separation box 10. An inclined screen plate 302 is fixedly connected to the bottom of the screening mechanism 30. A fan 301 is fixedly installed on the top of the separation box 10, and a flat guide hood is installed on the front end of the fan 301. The feeding mechanism 20 includes a feeding frame 201 fixedly connected to the top of the separation box 10 by anti-loosening bolts. A pair of partition plates 203 arranged in a front-to-back manner are fixedly connected inside the feeding frame 201. A pair of mirror-symmetrical and inclined filter screens 204 are fixedly connected to the top of the two partition plates 203. The top of the filter screens 204 is fixedly connected to the inner wall of the feeding frame 201. A discharge trough is formed between the two partition plates 203, and the width of the discharge trough is slightly larger than the diameter of the steel shot.

[0017] During operation, start the blower 301 and pour the used steel shot from the shot blasting machine into the feed frame 201 in batches. Most of the incoming steel shot is supported by the surface of the filter screen 204, while a small portion is directly discharged through the discharge chute. The incoming steel shot rolls downwards due to gravity, and some of it is guided towards the discharge chute by the inclined surface of the filter screen 204. During this rolling process, some fine steel shot fragments will pass directly through the mesh of the filter screen 204 and be discharged to a specific area. Qualified steel shot or large impurities (such as unbroken, substandard steel shot) are guided to the discharge chute by the filter screen 204 because their size is larger than the mesh. This achieves the goal of "first screening out fine fragments, then air-separating large pieces". The grading process improves the overall separation accuracy. Since the diameter of the discharge chute is slightly larger than that of the steel shot, the amount of steel shot discharged at one time is smaller. The discharge chute is rectangular, so the discharged steel shot or fragments are discharged in a straight line. When the blower 301 blows the orderly arranged steel shot, there is no problem that the steel shot or fragments far away from the blower 301 cannot be effectively blown away by the blower 301 due to the overlap between the steel shot. When the blower 301 blows the rows of steel shot and fragments falling downwards, the fragments are blown away by the blower 301 because they are lighter than the steel shot. The steel shot falls vertically downwards to the highest point of the screen, where the screen plate 302 performs the final screening of the steel shot.

[0018] Preferably, a vibration motor 205 is fixedly installed on the right side of the feed frame 201, and an anti-vibration pad 202 is provided at the connection between the feed frame 201 and the separation box 10.

[0019] During the use of the feeding mechanism 20, the steel shot fragments are often squeezed together, causing blockage of the discharge chute. At the same time as the discharge, the vibration motor 205 is started. The rotor of the vibration motor 205 drives the eccentric block to rotate, causing it to vibrate at high frequency. The vibration is guided to the feeding frame 201 connected to it. The feeding frame 201 vibrates at high frequency, which separates the steel shot from the fragments, making it easier for the steel shot to be discharged normally. At the same time, the vibration also makes it easier for the fragments to pass through the filter screen 204. The anti-vibration pad 202 can reduce the impact of high frequency vibration on the separation box 10.

[0020] Furthermore, a gap is formed between the partition plate 203 and the inner wall of the adjacent feed frame 201. A trapezoidal box 206 is provided below the gap. The four sides of the trapezoidal box 206 are inclined towards the center. The top of the trapezoidal box 206 is fixedly connected to the top of the separation box 10, and the bottom of the trapezoidal box 206 is fixedly connected to the discharge pipe 207.

[0021] The small fragments of steel shot enter the trapezoidal box 206 through the filter screen 204. The inclined surface of the trapezoidal box 206 guides the fragments into the discharge pipe 207, and then discharges them to the storage position.

[0022] refer to Figure 1 , Figure 2 , Figure 4The screening mechanism 30 also includes a contact plate 306 fixedly connected to the rear side of the screen plate 302. The contact plate 306 is made of alloy material and a buffer pad 307 is provided on the top of the contact plate 306. The buffer pad 307 is made of low-resilience polyurethane foam material. The contact plate 306 is located directly below the discharge trough.

[0023] During use, the steel shot discharged through the discharge chute is discharged downwards. After being screened by the air force of the blower 301, the steel shot falls onto the buffer pad 307. The deformation of the buffer pad 307 absorbs the impact force of the steel shot, preventing the steel shot from making hard contact with the screen plate 302 and causing damage to the screen plate 302. Due to the low rebound characteristic of the buffer pad 307, the steel shot will not bounce up. Then, the steel shot slides forward along the surface of the buffer pad 307 to the surface of the screen plate 302. Defective steel shot falls through the mesh of the screen plate 302, while normal steel shot passes through the screening of the screen plate 302.

[0024] Furthermore, a waste material box 305 is provided on the rear side inside the separation box 10. The waste material box 305 is located below the discharge port of the discharge pipe 207. A receiving box 303 is placed at the bottom of the screen plate 302. A partition plate 304 is fixedly connected inside the receiving box 303. The partition plate 304 divides the receiving box 303 into front and rear parts, and the partition plate 304 is flush with the front side of the screen plate 302.

[0025] In use, the waste box 305 is used to collect the scrap discharged from the discharge pipe 207 and the steel shot fragments blown apart during air screening. During screening by the sieve plate 302, unqualified steel shot falls through the mesh of the sieve plate 302 into the space behind the receiving box 303, while suitable steel shot rolls down from the front of the sieve plate 302 into the space in front of the receiving box 303 after screening; thus achieving the effect of independent collection of scrap and steel shot.

[0026] Preferably, a second vibration motor is fixedly installed on the right side of the sieve plate 302. When the sieve plate 302 is screening steel shot, there may be a problem of fragments getting stuck in the mesh of the sieve plate 302. After the second vibration motor is started, the second vibration motor drives the sieve plate 302 to vibrate at a high frequency, which can shake off the fragments stuck in the mesh of the sieve plate 302 and avoid clogging of the mesh.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A shot separator for a hook-type shot blasting machine, comprising a separation box (10), wherein a feeding mechanism (20) is provided on the top rear side of the separation box (10), and a screening mechanism (30) is provided on the inner side of the separation box (10), wherein an inclined screen plate (302) is fixedly connected to the bottom of the screening mechanism (30), characterized in that, A fan (301) is fixedly installed on the top of the separation box (10), and a flat guide shroud is installed on the front end of the fan (301); the feeding mechanism (20) includes a feeding frame (201) fixedly connected to the top of the separation box (10) by anti-loosening bolts, and a pair of partition plates (203) arranged in front and behind are fixedly connected inside the feeding frame (201). A pair of mirror-symmetrical and inclined filter screens (204) are fixedly connected to the top of the two partition plates (203). The top of the filter screens (204) is fixedly connected to the inner wall of the feeding frame (201). A discharge trough is formed between the two partition plates (203), and the width of the discharge trough is slightly larger than the diameter of the steel shot.

2. The shot separator for a hook-type shot blasting machine according to claim 1, characterized in that, A vibration motor (205) is fixedly installed on the right side of the feed frame (201), and a shock-absorbing pad (202) is provided at the connection between the feed frame (201) and the separation box (10).

3. The shot separator for a hook-type shot blasting machine according to claim 1, characterized in that, The partition plate (203) forms a gap with the inner wall of the adjacent feed frame (201). A trapezoidal box (206) is provided below the gap. The four sides of the trapezoidal box (206) are inclined towards the center. The top of the trapezoidal box (206) is fixedly connected to the top of the separation box (10), and the bottom of the trapezoidal box (206) is fixedly connected to the discharge pipe (207).

4. A shot separator for a hook-type shot blasting machine according to claim 1, characterized in that, The screening mechanism (30) also includes a contact plate (306) fixedly connected to the rear side of the sieve plate (302). The contact plate (306) is made of alloy material and a buffer pad (307) is provided on the top of the contact plate (306). The buffer pad (307) is made of low-resilience polyurethane foam material. The contact plate (306) is located directly below the discharge trough.

5. A shot separator for a hook-type shot blasting machine according to claim 4, characterized in that, The separation box (10) is provided with a waste material box (305) on the rear side inside. The waste material box (305) is located below the discharge port of the discharge pipe (207). The bottom of the sieve plate (302) is provided with a receiving box (303). The receiving box (303) is fixedly connected with a partition plate (304). The partition plate (304) divides the receiving box (303) into front and rear parts and the partition plate (304) is flush with the front side of the sieve plate (302).

6. A shot separator for a hook-type shot blasting machine according to claim 5, characterized in that, A vibration motor is fixedly installed on the right side of the sieve plate (302).

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