A shot separating device for a shot blasting machine

Abstract

A kind of ball separating device for shot blasting machine, ball separating device includes: impeller, including wheel cavity and window integrally formed on wheel cavity;Ball separating wheel is fixedly connected to the inside of wheel cavity, ball separating wheel includes first rotating cavity fixedly connected in wheel cavity, it further includes baffle fixedly connected to impeller, and second rotating cavity fixedly connected to impeller and located at the side of baffle away from the first rotating cavity;Ball inlet pipe is fixedly connected to impeller, and the fixed end of ball inlet pipe with impeller is provided with several radial array setting shunt duct along pipe face, and shunt duct is communicated with main pipe at the other end of ball inlet pipe;Impeller rotates and after ball flow enters ball inlet pipe, ball flow is evenly entered ball separating wheel after passing each shunt duct, ball flow is first rotated and thrown on baffle after passing first rotating cavity, and is rotated in second rotating cavity along baffle, and ball flow is thrown wheel cavity after rotating in second rotating cavity, and is thrown along the inside of wheel cavity.

Description

Technical Field

[0001] This utility model relates to the field of surface treatment equipment, and in particular to a shot blasting machine shot distribution device. Background Technology As an important surface treatment equipment, the performance of the core working component of a shot blasting machine, the shot distribution device, directly determines the cleaning efficiency, effect, and operating economy of the entire machine. The shot distribution device typically includes components such as a motor, impeller, shot distribution wheel, and shot inlet pipe. Its working principle is that the shot falls into the shot distribution wheel through the shot inlet pipe. Under the action of centrifugal force, it is distributed by the shot distribution wheel and initially accelerated. Then, it is thrown towards the high-speed rotating impeller blades and finally ejected at high speed in a certain direction by the blades, impacting the surface of the workpiece.

[0002] However, current shot separation devices have some drawbacks in practical use. First, in the shot guiding stage of the shot separation device, the internal structure of traditional shot separating wheels is usually relatively simple. After the shot enters the shot separating wheel from the feed pipe, it is usually guided directly to the impeller window by centrifugal force. After the shot is ejected from the impeller window, its movement path and initial angle are highly random. Some shot fails to enter the root of the impeller blades at the optimal angle, instead undergoing disorderly collisions and rebounds inside the impeller. This path dispersion problem results in the shot beam ejected from the impeller being unconcentrated, forming a divergent jet. The direct consequence is that the shot blasting energy is not concentrated, the coverage of the workpiece surface is uneven, and the cleaning effect is affected. If a more complex guiding structure is added to the shot separating wheel, when the flow rate in the feed pipe is large, the shot will fall freely into the shot separating wheel under gravity, which can easily lead to uneven distribution of the shot flow and accumulation in the shot separating wheel or guiding structure. This uneven feeding method causes specific areas inside the shot distributor to experience excessive impact and friction from the shot, resulting in severe localized wear inside the shot distributor. Once wear occurs inside the shot distributor, its window shape and guide structure surface will change, further deteriorating the uniformity of shot distribution and the guidance of the shot.

[0003] Therefore, it is necessary to provide a shot distribution device for shot blasting machines that can concentrate the ejected shot and avoid uneven distribution of shot flow in the shot distribution wheel. Utility Model Content

[0004] The purpose of this invention is to provide a shot distribution device for shot blasting machines that can concentrate the ejected shot and avoid uneven distribution of shot flow in the shot distribution wheel.

[0005] According to one aspect of this application, a shot-separating device for a shot blasting machine is provided, the shot-separating device comprising: The impeller includes a chamber and a window integrally formed on the chamber; The shot distribution wheel, viewed along the impeller axial direction, is fixedly connected to the inside of the impeller cavity. The shot distribution wheel includes a first rotating cavity fixedly connected to the impeller cavity and arranged along the circumference of the impeller, a baffle fixedly connected to the impeller and located in the radial extension direction of the first rotating cavity, and a second rotating cavity fixedly connected to the impeller, located on the side of the baffle opposite to the first rotating cavity and arranged radially along the impeller. A shot inlet pipe is fixedly connected to the impeller. At one end of the shot inlet pipe that is fixed to the impeller, there are a plurality of diversion pipes arranged radially along the pipe surface. The diversion pipes are connected to the pipe at the other end of the shot inlet pipe. Wherein, after the impeller rotates and the shot flow enters the shot inlet pipe, the shot flow enters the shot distribution wheel evenly through each of the distribution pipes. The shot flow first passes through the first rotating cavity and is thrown onto the baffle, and then enters the second rotating cavity along the baffle and rotates. After rotating in the second rotating cavity, the shot flow is thrown into the wheel cavity and is ejected along the inner side of the wheel cavity.

[0006] More preferably, the impeller further includes blades, a plurality of which are fixedly connected to the side of the impeller cavity opposite to the ball-distributing wheel and arranged circumferentially along the impeller.

[0007] More preferably, wear-resistant pads are fixedly connected to both sides of the blade, and the wear-resistant pads are made of one or more of polyurethane, rubber or polyethylene.

[0008] More preferably, the impeller further includes: A rotating shaft is integrally formed on one side of the impeller cavity and is located in the axial direction of the impeller; The feed inlet is integrally formed on the side of the wheel cavity opposite to the rotating shaft; The shot inlet pipe is fixedly connected to the feed port to deliver the shot flow into the shot distribution wheel.

[0009] More preferably, the pelletizing device is further provided with a motor and a belt, one end of the belt being tensioned and fitted onto the output shaft of the motor, and the other end being tensioned and fitted onto the rotating shaft.

[0010] More preferably, when the motor is driven, the output shaft drives the belt to move and drives the rotating shaft to rotate in the first direction.

[0011] More preferably, the rotating shaft drives the impeller and the shot distribution wheel to rotate along the first direction, and in the shot distribution wheel, the first rotating cavity, the baffle and the second rotating cavity, which are fixedly connected in the wheel cavity, rotate along the first direction respectively.

[0012] More preferably, when the impeller rotates in the first direction, the blades also rotate in the first direction, and continuously knock the shot thrown out of the window away from the impeller in the first direction.

[0013] More preferably, the pelletizing device further includes: The impeller is disposed within the housing; One end of the housing is provided with a discharge port to eject the pellets pounded by the blades.

[0014] More preferably, the diversion pipe is tapered and gradually narrows in the extension direction. When viewed in a direction parallel to the impeller axis, the shot inlet pipe has 6 diversion pipes, and the cross-sectional radius of each diversion pipe is the same.

[0015] This utility model has the following beneficial effects: The shot flow is guided sequentially by baffles and the inner side of the wheel cavity before being ejected. This prevents the shot flow from becoming dispersed within the distribution wheel before entering the inner guide of the wheel cavity, thus increasing the concentration of shot ejected at the window. Furthermore, the shot flow is diverted by several diversion pipes before entering the distribution wheel through the inlet pipe. This ensures that the shot flow enters the distribution wheel evenly from various positions at the end connected to the inlet pipe, preventing uneven distribution of the shot flow within the distribution wheel and preventing blockage in the first and second rotating cavities of the distribution wheel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the pelletizing device described in one embodiment of this application; Figure 2 This is a schematic diagram of the planar structure of the impeller in the pelletizing device according to one embodiment of this application; Figure 3 This is a cross-sectional schematic diagram of the impeller in the pelletizing device according to one embodiment of this application; Figure 4 This is a schematic diagram of the planar structure of the pellet inlet pipe in the pellet separating device according to one embodiment of this application; Reference numerals: 100, Shot distribution device; 10, Impeller; 11, Wheel cavity; 12, Window; 13, Blade; 13A, Wear-resistant pad; 14, Rotating shaft; 15, Feed inlet; 20, Shot distribution wheel; 21, First rotating chamber; 22, Baffle; 23, Second rotating chamber; 30, Shot inlet pipe; 31, Diversion pipe; 40, Motor; 50, Belt; 60, Housing; 61, Discharge port; F1, First direction. Detailed Implementation

[0018] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please refer to Figure 1 - Figure 4 One embodiment of this application provides a shot blasting machine shot distribution device 100, which includes: an impeller 10, a shot distribution wheel 20 and a shot inlet pipe 30.

[0022] The impeller 10 includes a wheel cavity 11 and a window 12 integrally formed on the wheel cavity 11. Viewed axially along the impeller 10, the shot-distributing wheel 20 is fixedly connected to the interior of the wheel cavity 11. The shot-distributing wheel 20 includes a first rotating cavity 21 fixedly connected to the wheel cavity 11 and arranged circumferentially along the impeller 10; a baffle 22 fixedly connected to the impeller 10 and located in the radial extension direction of the first rotating cavity 21; and a second rotating cavity 23 fixedly connected to the impeller 10, located on the side of the baffle 22 opposite to the first rotating cavity 21, and arranged radially along the impeller 10. The shot inlet pipe 30 is fixedly connected to the impeller 10. At one end of the shot inlet pipe 30 fixed to the impeller 10, a plurality of diversion pipes 31 are arranged radially along the pipe surface. The diversion pipes 31 communicate with the other end of the shot inlet pipe 30. After the impeller 10 rotates and the shot flow enters the shot inlet pipe 30, the shot flow enters the shot distribution wheel 20 evenly through each of the branch pipes 31. The shot flow first passes through the first rotating cavity 21 and is thrown onto the baffle 22, and then enters the second rotating cavity 23 along the baffle 22 and rotates. After rotating in the second rotating cavity 23, the shot flow is thrown onto the wheel cavity 11 and is ejected along the inner side of the wheel cavity 11.

[0023] One side of the impeller cavity 11 extends axially to form a rotating shaft 14, which is used to connect with a transmission mechanism such as a belt 50 to receive power from the motor 40. On the other side of the impeller cavity 11, a feed inlet 15 is centrally located. A window 12 is integrally formed on the outer circumference of the impeller cavity 11, evenly distributed around the circumference. Eight blades 13 are fixedly installed on the outer wall of the impeller cavity 11. When the impeller 10 rotates at high speed, the blades 13 are the direct components that ultimately accelerate and eject the shot. The shot distributor 20 is fixedly installed inside the impeller cavity 11 of the impeller 10. Viewed axially from the impeller 10, the shot distributor 20 includes a first rotating chamber 21, a baffle 22, and a second rotating chamber 23. The first rotating chamber 21 is fixedly connected inside the impeller cavity 11 and is arranged circumferentially along the impeller 10. The first rotating chamber 21 is a small rotating chamber with eight openings. Its primary function is to receive the shot from the shot inlet pipe 30 and, using the centrifugal force generated by the synchronous rotation with the impeller 10, to initially distribute and pre-accelerate the shot, giving it initial velocity and dispersing it. The baffle 22 is fixedly connected to the impeller 10 and located in the radial extension direction of the first rotating cavity 21, i.e., on a circumference with a larger radius than the first rotating cavity 21. The baffle 22 is a structure arranged circumferentially but not forming a closed loop. Its core function is to guide the initial flow of the shot. A portion of the shot ejected from the first rotating cavity 21 directly enters the second rotating cavity 23, while the other portion impacts the inner wall of the baffle 22. The baffle 22 forces this portion of the shot to change its potentially dispersed trajectory, causing it to move along the wall and be neatly guided into the second rotating cavity 23. The second rotating cavity 23 is also fixedly connected to the impeller 10, and it is arranged radially along the impeller 10 on a radius larger than that of the first rotating cavity 21 and the baffle 22. The second rotating chamber 23 has 12 openings. The shot, guided by the baffle 22 and directly fed into the first rotating chamber 21, converges here. Utilizing its larger rotation radius and more openings, the second rotating chamber 23 performs secondary distribution and path calibration of the shot, ensuring it is delivered in a more concentrated state. The shot inlet pipe 30 is fixedly connected to the feed port 15 of the impeller 10, responsible for conveying the shot to the shot distributor 20. At the end connected to the impeller 10, its wall has six circumferentially distributed branch pipes 31. These branch pipes 31 connect to the main pipe at the other end of the shot inlet pipe 30 and form a tapered, gradually narrowing channel in the extending direction. The main purpose of the branch pipes 31 is to decompose a concentrated shot flow from the main pipe into multiple small, evenly distributed branch streams. This solves the problem of shot accumulation at the inlet of the shot distributor 20 from the source, achieving uniform feeding and providing a prerequisite for the stable operation of the rotating chamber inside the shot distributor 20. At the same time, the conical design has a certain buffering effect on the fluctuation of shot flow. The motor 40 drives the rotating shaft 14 of the impeller 10 through the belt 50, driving the entire impeller 10 and the shot distributor 20 fixed inside it to rotate at high speed.The shot flow enters from the main pipe of the shot inlet pipe 30 and is then evenly distributed by several branch pipes 31, thus smoothly entering the first rotating chamber 21 of the shot distributor 20 from multiple points. Within the first rotating chamber 21, the shot is initially accelerated and distributed. Subsequently, the shot is thrown towards the baffle 22 or directly enters the second rotating chamber 23. Shot contacting the baffle 22 is guided by the baffle 22, changing its direction of motion and smoothly entering the second rotating chamber 23 along the inner wall of the baffle 22. After all the shot completes its final path calibration and acceleration in the second rotating chamber 23, it is collectively thrown towards the inner wall of the impeller 10's chamber 11. The shot moves close to the inner wall of the chamber 11 and is finally thrown from the window 12 on the chamber 11 to the root of the rotating blade 13. The blade 13 catches these precisely guided shot pieces, further accelerates them to working speed, and throws them out in a concentrated and directional manner from the outlet 61 on the housing 60 to impact and clean the workpiece.

[0024] More preferably, the impeller 10 further includes blades 13, a plurality of blades 13 being fixedly connected to the side of the impeller cavity 11 away from the ball distribution wheel 20 and arranged along the circumference of the impeller 10.

[0025] Eight blades 13 are fixedly connected to the outer end face of the impeller 11 on the side opposite to the shot distribution wheel 20 installed inside it, and these blades 13 are strictly and uniformly arranged along the circumference of the impeller 10. This ensures that the shot delivered from the shot distribution wheel 20 through the window 12 can be instantly captured and held at its root by the high-speed rotating blades 13, and then accelerated to its maximum speed along the surface of the blades 13 and slapped out. The coordinated work of the blades 13, the impeller 11 and the window 12 efficiently converts the linear momentum of the shot flow provided by the shot distribution wheel 20, which has been precisely guided, into concentrated and directional projectile kinetic energy through the powerful centrifugal force generated by the rotation of the blades 13, thus ultimately forming a concentrated and uniformly covered shot beam that impacts the surface of the workpiece.

[0026] More preferably, wear-resistant pads 13A are fixedly connected to both sides of the blade 13, and the wear-resistant pads 13A are made of one or more of polyurethane, rubber or polyethylene.

[0027] The wear-resistant pad 13A is firmly bonded to the surface of the blade 13 via insert injection molding, ensuring it will not detach under high-speed rotation. Its material is preferably one or more composite materials selected from polyurethane, rubber, or polyethylene. The wear-resistant pad 13A transforms the rigid abrasive wear between the blade 13 substrate and the hard shot into impact buffering and flexible friction between the wear-resistant pad 13A elastomer and the shot. The material used in the wear-resistant pad 13A possesses both high toughness and energy absorption characteristics, effectively resisting the cutting and erosion of the shot, and absorbing some of the impact energy through its own elastic deformation. This significantly extends the service life of the blade 13 and also helps reduce equipment operating noise.

[0028] More preferably, the impeller 10 further includes a rotating shaft 14 and a feed inlet 15.

[0029] The rotating shaft 14 is integrally formed on one side of the wheel cavity 11 and is located in the axial direction of the impeller 10. The feed port 15 is integrally formed on the side of the wheel cavity 11 opposite to the rotating shaft 14. The shot inlet pipe 30 is fixedly connected to the feed port 15 to convey the shot flow into the shot distribution wheel 20.

[0030] The rotating shaft 14 is integrally formed with the center of one end face of the impeller cavity 11, and its axis is strictly coincident with the rotation axis of the impeller 10. This ensures that the power can be directly transmitted to the entire impeller 10 without eccentricity along the axial direction, ensuring the smooth operation of the shot distribution device 100 at high speed. On the other end face of the impeller cavity 11 opposite to the rotating shaft 14, a feed inlet 15 is integrally formed. This feed inlet 15 serves as the only channel for the shot to flow in, and the shot inlet pipe 30 is fixedly connected to this feed inlet 15.

[0031] More preferably, the pellet separating device 100 is further provided with a motor 40 and a belt 50, one end of the belt 50 is tensioned and sleeved on the output shaft of the motor 40, and the other end is tensioned and sleeved on the rotating shaft 14.

[0032] The drive system of the pelletizing device 100 consists of a motor 40 and a belt 50. One end of the belt 50 is tightly tensioned and sleeved on the output shaft of the motor 40, while the other end is similarly tensioned and sleeved on the rotating shaft 14 of the impeller 10, thus establishing a non-rigid flexible connection between the motor 40 and the rotating shaft 14. The high-speed rotational power generated by the motor 40 is efficiently and smoothly transmitted to the impeller 10 through friction transmission via the belt 50. At the same time, the elastic properties of the belt 50 itself can effectively absorb and buffer the instantaneous impacts and vibrations generated during the start-up and operation of the motor 40.

[0033] More preferably, when the motor 40 is driven, the output shaft drives the belt 50 to move and drives the rotating shaft 14 to rotate in the first direction F1.

[0034] When the motor 40 is started and driven, its output shaft acts as the driving element, transmitting the rotational motion to the impeller 10 rotating shaft 14, which acts as the driven element, through the belt 50 that meshes tightly with it, and forcibly driving the entire rotating shaft 14 to rotate continuously along the first direction F1 preset by the motor 40.

[0035] More preferably, the rotating shaft 14 drives the impeller 10 and the shot-distributing wheel 20 to rotate along the first direction F1. In the shot-distributing wheel 20, the first rotating cavity 21, the baffle 22 and the second rotating cavity 23, which are fixedly connected in the wheel cavity 11, rotate along the first direction F1 respectively.

[0036] When the rotating shaft 14 is driven to rotate along the first direction F1, it directly drives the impeller 10, the wheel cavity 11 fixed to it, and the shot distribution wheel 20 fixedly installed inside the wheel cavity 11 to rotate at the same speed along the first direction F1. This provides a stable motion environment for the centrifugal distribution and guidance process of the shot inside the device. There is no relative motion between all rotating parts in contact with the shot. From the moment the shot enters the first rotating cavity 21 until it is guided by the impact baffle 22 and finally calibrated in the second rotating cavity 23, the shot is under the control of a unified and continuous centrifugal force field. This allows the trajectory of the shot to be precisely designed and controlled, thereby efficiently and reliably converting rotational kinetic energy into momentum for concentrated and directional shot projection.

[0037] More preferably, when the impeller 10 rotates along the first direction F1, the blade 13 also rotates along the first direction F1, and continuously knocks the shot thrown out of the window 12 away from the impeller 10 along the first direction F1.

[0038] When the impeller 10 rotates at high speed along the first direction F1, the blades 13 fixedly connected to the outside of the impeller cavity 11 also rotate at the same speed along the first direction F1. During the movement, the root of one of the blades 13 is precisely aligned with and sweeps across the corresponding window 12 on the impeller cavity 11, thereby instantly capturing the shot delivered from the window 12. The shot, which has been precisely guided by the shot distributor 20, is further accelerated to the working speed required for blasting and continuously knocked away from the impeller 10 with extremely high kinetic energy, ultimately forming a concentrated shot beam.

[0039] More preferably, the pellet distribution device 100 further includes a housing 60. The impeller 10 is disposed within the housing 60. One end of the housing 60 is provided with a discharge port 61 to eject the pellets dislodged by the blades 13.

[0040] The pellet distribution device 100 also includes a housing 60 serving as external protection and flow guide. The impeller 10 assembly is housed within the internal cavity of the housing 60, maintaining a minimal safety clearance between them. A wide, square discharge port 61 is provided on the side of the housing 60 corresponding to the sweeping trajectory of the impeller 10 blades 13. The housing 60 primarily acts as a robust sealing cover, safely isolating the high-speed rotating impeller 10 and its powerful jet stream from the external environment, effectively preventing risks from pellet splashing and equipment interference. Simultaneously, it guides all the pellets to be concentrated and ejected through the single discharge port 61.

[0041] More preferably, the diversion pipe 31 is tapered and gradually narrows in the extension direction. When viewed along a direction parallel to the axial direction of the impeller 10, the shot inlet pipe 30 is provided with 6 diversion pipes 31, and the cross-sectional radius of each diversion pipe 31 is the same.

[0042] The branch pipe 31 at the end of the feed pipe 30 adopts a tapered and gradually narrowing design in its extension direction. That is, its flow cross-section continuously and uniformly decreases from the connection with the main pipe to the outlet end. When viewed along the direction parallel to the axial direction of the impeller 10, six such branch pipes 31 can be seen to be strictly radially arrayed and symmetrically distributed with the central axis of the feed pipe 30 as the reference, and all branch pipes 31 have the same cross-sectional radius. The tapered and gradually narrowing branch pipes 31 can apply a gradual squeezing and acceleration effect to the shot, effectively destroying the arching that the shot may form in the pipe, thereby significantly improving its flowability. The centrally symmetrical distribution of the six pipes with the same cross-sectional area ensures that the shot flow is equally divided into six branches with the same flow rate and velocity, and uniformly injected into the first rotating cavity 21 of the feed impeller 20 from the circumferential direction, eliminating the risk of local wear of the feed impeller 20 and jamming of the rotating cavity caused by uneven feeding.

[0043] In this way, the shot flow is guided sequentially by the baffle 22 and the inner side of the wheel cavity 11 before being ejected. This prevents the shot flow from being dispersed in the distribution wheel 20 before entering the inner side of the wheel cavity 11, thus improving the concentration of shot ejected at the window 12. Furthermore, by using several diversion pipes 31 to divert the shot flow before it enters the distribution wheel 20 through the shot inlet pipe 30, the shot flow can enter the distribution wheel 20 evenly from various positions at the end of the shot inlet pipe 30 that connects to the distribution wheel 20. This avoids uneven distribution of the shot flow in the distribution wheel 20 and prevents blockage in the first rotating cavity 21 and the second rotating cavity 23 of the distribution wheel 20.

[0044] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A shot-separating device for a shot blasting machine, characterized in that, The pelletizing device includes: The impeller includes a chamber and a window integrally formed on the chamber; The shot distribution wheel, viewed along the impeller axial direction, is fixedly connected to the inside of the impeller cavity. The shot distribution wheel includes a first rotating cavity fixedly connected to the impeller cavity and arranged along the circumference of the impeller, a baffle fixedly connected to the impeller and located in the radial extension direction of the first rotating cavity, and a second rotating cavity fixedly connected to the impeller, located on the side of the baffle opposite to the first rotating cavity and arranged radially along the impeller. A shot inlet pipe is fixedly connected to the impeller. At one end of the shot inlet pipe that is fixed to the impeller, there are a plurality of diversion pipes arranged radially along the pipe surface. The diversion pipes are connected to the pipe at the other end of the shot inlet pipe. Wherein, after the impeller rotates and the shot flow enters the shot inlet pipe, the shot flow enters the shot distribution wheel evenly through each of the distribution pipes. The shot flow first passes through the first rotating cavity and is thrown onto the baffle, and then enters the second rotating cavity along the baffle and rotates. After rotating in the second rotating cavity, the shot flow is thrown into the wheel cavity and is ejected along the inner side of the wheel cavity.

2. The shot-separating device for a shot blasting machine according to claim 1, characterized in that, The impeller also includes blades, and a plurality of the blades are fixedly connected to the side of the impeller cavity opposite to the ball-distributing wheel and are arranged along the circumference of the impeller.

3. The shot-separating device for a shot blasting machine according to claim 2, characterized in that, Wear-resistant pads are fixedly connected to both sides of the blade. The wear-resistant pads are made of one or more of polyurethane, rubber, or polyethylene.

4. A shot-separating device for a shot blasting machine according to claim 2, characterized in that, The impeller also includes: A rotating shaft is integrally formed on one side of the impeller cavity and is located in the axial direction of the impeller; The feed inlet is integrally formed on the side of the wheel cavity opposite to the rotating shaft; The shot inlet pipe is fixedly connected to the feed port to deliver shot flow into the shot distribution wheel.

5. A shot-separating device for a shot blasting machine according to claim 4, characterized in that, The pelletizing device is also equipped with a motor and a belt. One end of the belt is tensioned and fitted on the output shaft of the motor, and the other end is tensioned and fitted on the rotating shaft.

6. A shot-separating device for a shot blasting machine according to claim 5, characterized in that, When the motor is driven, the output shaft drives the belt to move and drives the rotating shaft to rotate in the first direction.

7. A shot-separating device for a shot blasting machine according to claim 6, characterized in that, The rotating shaft drives the impeller and the shot distribution wheel to rotate along the first direction. In the shot distribution wheel, the first rotating cavity, the baffle and the second rotating cavity, which are fixedly connected in the wheel cavity, rotate along the first direction respectively.

8. A shot-separating device for a shot blasting machine according to claim 7, characterized in that, When the impeller rotates in the first direction, the blades also rotate in the first direction, and continuously knock the shot thrown out of the window away from the impeller in the first direction.

9. A shot-separating device for a shot blasting machine according to claim 2, characterized in that, The pelletizing device further includes: The impeller is disposed within the housing; One end of the housing is provided with a discharge port to eject the pellets pounded by the blades.

10. A shot-separating device for a shot blasting machine according to claim 1, characterized in that, The diversion pipe is tapered and gradually narrows in the extension direction. When viewed along a direction parallel to the impeller axis, the shot inlet pipe has 6 diversion pipes, and the cross-sectional radius of each diversion pipe is the same.

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