A pellet separation system

Abstract

The present invention discloses a shot separation system, which relates to the field of shot recovery and separation technology for shot blasting machines. It mainly includes a shell and a magnetic separation roller mechanism installed in the shell, a rebound bin is connected to one side of the shell, a multi-stage deceleration bin is arranged in the shell, the multi-stage deceleration bin is connected between the rebound bin and the magnetic separation roller mechanism, the multi-stage deceleration bin includes a first deceleration component and a second deceleration component, the first deceleration component is connected between the rebound bin and the second deceleration component, and is used to perform a first-stage deceleration on the shot ejected from the rebound bin, the second deceleration component is connected between the first deceleration component and the magnetic separation roller mechanism, and is used to perform a second-stage deceleration on the shot after the first-stage deceleration. The present invention improves the part at the end of the rebound bin at the outlet, adds a component with a multi-stage deceleration function, thereby performing multi-stage energy release on the shot after ejection, greatly reducing the possibility of the shot penetrating or damaging the part at the end of the rebound bin at the outlet.

Description

Technical Field

[0001] The invention relates to the technical field of shot material recovery and separation of shot blasting machines, and in particular to a shot material separation system. Background Art

[0002] The Chinese invention patent application number 201310698890.3 discloses a magnetic separator for a shot blasting machine. The magnetic separator is mainly used in large vehicle-mounted shot blasting machines. It can screen and separate the rebounded steel shot and surface treated impurities. The separated shot enters the next circulation process, while most of the impurities enter the dust removal system for recovery.

[0003] During the use of this magnetic separator, we found that the part of the magnetic separator connected to the rebound bin, that is, the end outlet of the rebound bin, is often damaged or punctured. Not only does it need to be stopped immediately for inspection, but it is also quite troublesome to replace the punctured part, and it will cause a large amount of pills to leak and be sucked into the dust removal system, resulting in an extreme waste of pills. The reason is that the reflected pills carry great kinetic energy, and they still have considerable kinetic energy under the resistance of the arc baffle at the end outlet of the rebound bin. After a period of use, the arc baffle part is directly deformed and cracked or directly punctured, resulting in a large amount of pill leakage.

[0004] In view of this, we conducted a lot of tests to prevent high-speed shot from penetrating the end of the rebound bin, and redesigned it to reduce the loss of shot. Summary of the invention

[0005] The object of the present invention is to provide a shot separation system, which improves the part at the end outlet of the rebound bin and adds a component with a multi-stage deceleration function, so as to release the energy of the shot after being ejected in multiple stages, thereby greatly reducing the possibility of the shot penetrating or damaging the part at the end outlet of the rebound bin.

[0006] The object of the present invention is achieved through the following technical solutions: A shot separation system comprises a shell and a magnetic separation drum mechanism installed in the shell, one side of the shell is connected to a rebound bin, a multi-stage deceleration bin is arranged in the shell, the multi-stage deceleration bin is connected between the rebound bin and the magnetic separation drum mechanism, and the multi-stage deceleration bin comprises:

[0007] The first deceleration component is connected between the rebound bin and the second deceleration component and is used to perform a first-stage deceleration on the shot materials ejected from the rebound bin;

[0008] The second deceleration assembly is connected between the first deceleration assembly and the magnetic separation drum mechanism, and is used for performing a second deceleration on the shot material after the first deceleration.

[0009] Furthermore, the first deceleration assembly includes a base plate and at least one deceleration plate, the base plate is connected to the outer wall at the outlet of the rebound bin and is used to guide the shot material, at least one deceleration plate is arranged between the base plate and the second deceleration assembly, the side of the first deceleration plate connected to the base plate close to the base plate is located on the outside of the guide direction of the base plate, and the side of the first deceleration plate away from the base plate is located on the inside of the guide direction of the base plate, and the connection method between adjacent deceleration plates is the same as the connection method between the first deceleration plate and the base plate.

[0010] Furthermore, air regulating ports are formed between the ends of the first speed reducer and the base plate on a side close to each other, and between the ends of adjacent speed reducers on a side close to each other.

[0011] Furthermore, the first deceleration assembly includes at least two deceleration plates, all of which are parallel to each other, and each deceleration plate is detachably mounted between two side walls of the inner cavity of the shell.

[0012] Furthermore, the second deceleration assembly includes a deceleration arc plate, one end of the deceleration arc plate is connected to the last deceleration plate, and the other end forms a discharge port connected to the bottom wall of the shell inner cavity, which can be connected to the magnetic separation drum mechanism, and the arc center of the deceleration arc plate is located on the side of the deceleration arc plate close to the rebound bin.

[0013] Furthermore, the second deceleration assembly also includes a primary screening separation plate, which is installed inside the shell on the side where the arc center of the deceleration arc plate is located, and an upper aisle is formed between the upper end of the primary screening separation plate and the deceleration arc plate, and a lower aisle is formed between the upper end of the primary screening separation plate and the bottom wall of the shell inner cavity.

[0014] Furthermore, the lower end of the primary screening separation plate is inclined toward one side of the base plate, and a plurality of sieve holes are processed on the primary screening separation plate.

[0015] Furthermore, a wind adjustment bin is provided in the shell, one side of which is connected to the air adjustment port, an air inlet connected to the wind adjustment bin is processed on the shell, and a wind adjustment component for adjusting the air volume of the air inlet is provided in the wind adjustment bin.

[0016] Furthermore, the wind force adjustment component includes at least two wind shields, adjacent wind shields are telescopically connected, and the side walls of the non-telescopic ends of the wind shields are connected to the side walls of the wind force adjustment chamber.

[0017] Furthermore, a pill collecting bin is also provided in the shell, and the pill collecting bin is located on the side of the shell away from the rebound bin. The pill collecting bin includes a feeding bin and a recovery bin, and the recovery bin is located between the feeding bin and the magnetic separation drum mechanism. At least one feeding hopper connected to the feeding bin is provided on the shell, and a sorting sedimentation plate is fixed on the inner cavity wall of the shell above the recovery bin.

[0018] Furthermore, reflux wing plates are fixed on the inner cavity walls of the shell on both sides above the magnetic separation drum mechanism. The reflux wing plates are located directly above the discharge port, and the lower ends of the reflux wing plates on both sides are close to each other.

[0019] Furthermore, a separation bin is provided in the shell, and the separation bin is located below the magnetic separation drum mechanism. At least one air regulating port connected to the separation bin is processed on the shell, and an air regulating component is installed in the air regulating port.

[0020] The pellet separation system provided by the embodiment of the present invention has the following beneficial effects:

[0021] 1. By setting a multi-stage deceleration bin, the multi-stage deceleration bin includes a first deceleration assembly with a first-stage strong deceleration effect and a second deceleration assembly with a second-stage buffer deceleration effect. The arrangement of the multi-stage deceleration plates in the first deceleration assembly can greatly release or reduce the kinetic energy of the reflected shot, so that the shot entering the multi-stage deceleration bin, especially the deceleration arc plate part in the second deceleration assembly, is rapidly decelerated, and will not cause great impact damage to the second deceleration assembly and the part close to the magnetic separation drum mechanism. Only the deceleration plate needs to be replaced to ensure a long service life of the multi-stage deceleration bin, and the waste of a large amount of shot being sucked away due to the breakdown of the multi-stage deceleration bin is avoided as much as possible;

[0022] 2. An air adjustment port is formed between the multi-stage adjacent deceleration plates in the first deceleration component, that is, the first deceleration component is in a non-sealed state and can be communicated with the wind adjustment bin, so that the pills in the rebound bin can enter the multi-stage deceleration bin more smoothly for recovery under the combined action of negative pressure suction and rebound force, thereby avoiding the phenomenon that the pills cannot be recovered in time and waste occurs because some pills fail to be ejected smoothly from the ejection port of the rebound bin; in addition, by arranging a wind adjustment component in the wind adjustment bin, it can adapt to the working conditions of different suction wind forces required by different impurities and pill amounts;

[0023] 3. A primary screening separation plate is arranged in the second deceleration assembly. The specific position and orientation of the primary screening separation plate can drain the shot and impurities and perform screening and separation again, so as to improve the separation efficiency of the subsequent magnetic separation drum mechanism;

[0024] 4. By setting up a shot collection bin, the shot collection bin can not only collect the shot after magnetic separation, but also replenish extra shot in time to increase the total amount of shot required for the entire shot blasting operation or make up for the loss of shot;

[0025] 5. By fixing a return wing plate above the magnetic separation drum mechanism, the return wing plate can guide or drain the steel shots accidentally thrown by the magnetic separation drum mechanism to the outside of the deceleration arc plate in the second deceleration assembly, and smoothly return these steel shots to the magnetic separation drum mechanism, avoiding the waste caused by the steel shots being stuck or staying in other places and unable to be recovered in time;

[0026] 6. By setting air regulating ports and air regulating components at the separation chamber, the air volume of the separation chamber can be changed at any time, so as to timely adjust the size of the negative pressure wind force to adjust the rate at which impurities are sucked away and achieve the optimal separation efficiency of steel shots and impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a pellet separation system provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the internal structure of a pellet separation system provided in an embodiment of the present invention;

[0029] Figure 3 for Figure 2 The structural schematic diagram of the shot separation system from another perspective is shown;

[0030] Figure 4 for Figure 2 Schematic diagram of the front view of the shot separation system shown.

[0031] Markings in the figure: 1-shell; 2-rebound bin; 3-shot collection bin; 4-wind adjustment bin; 5-multi-stage deceleration bin; 6-separation bin; 7-magnetic separation drum mechanism; 8-wind adjustment assembly; 9-return wing plate; 10-inspection plate; 11-air inlet; 21-rebound bin outlet; 31-recovery bin; 32-feeding bin; 33-feeding hopper; 34-sorting sedimentation plate; 51-first deceleration assembly; 52-second deceleration assembly; 61-air adjustment port; 62-air adjustment assembly; 81-wind shield; 511-base plate; 512-deceleration plate; 513-air adjustment port; 521-deceleration arc plate; 522-discharge port; 523-primary screening separation plate; 524-upper aisle; 525-lower aisle; 526-sieve hole. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

[0035] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] The terms "roughly" and "basically" are intended to explain that the relevant content does not require absolute accuracy, but can have certain deviations. For example, "roughly parallel" does not only mean absolute parallelism. Since it is difficult to achieve absolute "parallelism" in actual production and operation, there are generally certain deviations. Therefore, in addition to absolute parallelism, "roughly parallel" also includes the above-mentioned situation with certain deviations.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example

[0039] See also Figure 1 to Figure 4The shot separation system provided in this embodiment includes a shell 1 and a rebound bin 2 connected to one side of the shell 1. The rebound bin 2 serves as a recovery channel for the shot and impurities after high-speed rebound. The other side of the shell 1 is connected to the shot blasting chamber through a feed pipe (with a sand valve) to feed the recovered and separated shot into the shot blasting chamber to enter the next working cycle. A magnetic separation roller mechanism 7 is installed in the shell 1 between the rebound bin 2 and the feed pipe. The magnetic separation roller mechanism 7 is used to magnetically separate steel shots and impurities. The steel shots are ejected by the roller into the shell 1 on one side of the feed pipe. Some impurities that cannot be magnetically attracted are sucked into the dust removal system through the separation bin 6. This is the main working principle of the current magnetic separator. The current magnetic separator structure is only provided with a simple arc baffle at the rebound bin outlet 21. The arc baffle drains the shot so that the shot can be smoothly rolled to the magnetic separation roller mechanism 7. However, we found in actual work that the rebound bin outlet 21, especially the largest curved part of the arc baffle, is easily deformed or directly penetrated by steel shots, causing the steel shots to be directly ejected into the wind adjustment bin 4 and directly sucked away by the dust removal pipe, resulting in a large amount of steel shot waste. At first, we increased the size and thickened the arc baffle and replaced it with impact-resistant cast iron. Although this improvement method reduced the possibility of the arc baffle being penetrated, the steel shots with huge kinetic energy directly passed through the arc baffle and entered the part near the inlet of the magnetic separation drum mechanism 7, deforming or cracking the remaining mechanisms there. The replacement of the accessories involved in the penetrated part is quite complicated. If the replacement is not timely, it will also affect the magnetic separation effect of the magnetic separation drum mechanism 7. Therefore, we continued to design and improve the part at the rebound bin outlet 21 to reduce the possibility of steel shots with huge kinetic energy penetrating or cracking the corresponding parts in the shell 1, thereby reducing maintenance costs and avoiding forced shutdowns during work that affect the construction period.

[0040] In this embodiment, a multi-stage deceleration bin 5 is provided in the shell 1, and the multi-stage deceleration bin 5 is connected between the outlet of the rebound bin 2 and the magnetic separation roller mechanism 7, and is used for multi-stage deceleration or deceleration of the rebounded high-speed pills and impurities. The multi-stage deceleration bin 5 mainly includes a first deceleration component 51 and a second deceleration component 52. The first deceleration component 51 is connected between the rebound bin outlet 21 and the second deceleration component 52, and is used for a strong first-stage deceleration of the pills ejected from the rebound bin 2. The second deceleration component 52 is connected between the first deceleration component 51 and the magnetic separation roller mechanism 7, and is used for a secondary buffer deceleration of the pills that have released a large amount of kinetic energy after the first-stage deceleration. The first deceleration assembly 51 and the second deceleration assembly 52 are both composed of a combination of steel plates or cast iron plates with high impact resistance, which means that the first deceleration assembly 51 and the second deceleration assembly 52 are both composed of multiple steel plates or cast iron plates arranged in a certain manner, which can be an end-to-end arrangement, a directional stacking arrangement, or a multi-angle bending arrangement. It only needs to satisfy that the trajectory of the shot passing through the plate is not a continuous uniform straight surface or curved surface, which means that the trajectory of the shot has a low degree of smoothness, which can play a certain role in slowing down or reducing the speed of the high-speed shot.

[0041] In order to fully release the energy of the ejected pellets, the first deceleration assembly 51 includes a substrate 511 and at least one deceleration plate 512. The substrate 511 is connected to the outer wall of the rebound bin outlet 21 and is used to guide the pellets. The outer wall of the rebound bin outlet 21 refers to the outlet on the side of the rebound bin 2 connected to the shell 1 as the outlet, and the side wall of the outlet away from the magnetic separation drum mechanism 7 is its outer wall. The function of the substrate 511 is to guide the outlet direction of the pellets (including impurities) that just rebound to the outlet, that is, to have a diversion effect. The substrate 511 can smoothly transition and be connected in parallel with the outer wall at the rebound bin outlet 21. In another embodiment, the substrate 511 can also form an angle with the outer wall at the rebound bin outlet 21, that is, the end (upper end) of the substrate 511 away from the outer wall at the rebound bin outlet 21 is tilted toward the side of the magnetic separation drum mechanism 7, and the pellets that just rebound to the outlet directly hit the substrate 511 from the outer wall at the rebound bin outlet 21, so as to achieve the purpose of initial deceleration. In this embodiment, the substrate 511 and the outer wall at the rebound bin outlet 21 are smoothly transitioned and connected in parallel, which mainly plays the role of diverting or guiding the flow direction of the pellets, and the subsequent deceleration plate 512 plays the main deceleration role.

[0042] Specifically, the deceleration plate 512 can be a wider plate or a combination of multiple narrower plates. In order to achieve sufficient deceleration and energy release, in this embodiment, the number of deceleration plates 512 is preferably two. The two deceleration plates 512 are arranged in sequence between the substrate 511 and the second deceleration assembly 52. ​​The first deceleration plate 512 (the first deceleration plate 512) connected to the substrate 511 is located on the outside of the diversion direction of the substrate 511 on the side close to the substrate 511, and the outside also refers to the side away from the magnetic separation roller mechanism 7, and the side of the first deceleration plate 512 away from the substrate 511 is located on the inside of the diversion direction of the substrate 511, that is, on the side close to the magnetic separation roller mechanism 7. The shot material after the initial diversion from the substrate 511 directly hits the first deceleration plate 512 to achieve the purpose of initial deceleration. The connection method between the two deceleration plates 512 is the same as the connection method between the first deceleration plate 512 and the base plate 511, that is, the side of the last deceleration plate 512 (the second deceleration plate 512) close to the first deceleration plate 512 is located on the outside of the diversion direction of the first deceleration plate 512, and the side of the last deceleration plate 512 away from the first deceleration plate 512 is located on the inside of the diversion direction of the first deceleration plate 512. After the initial deceleration on the first deceleration plate 512, the pellets directly hit the last deceleration plate 512 to achieve the purpose of further deceleration. Of course, this arrangement can be used to continue to stack the third or fourth deceleration plate 512 to achieve the purpose of sufficient energy release and deceleration, which will not be elaborated here. In another embodiment, the base plate 511 can be removed or the base plate 511 can be arranged as the first deceleration plate 512, and the outer wall at the rebound bin outlet 21 is used to guide the pellets for the first time, and after the diversion, they directly hit the base plate 511 for preliminary deceleration.

[0043] The angle between the substrate 511 and the first deceleration plate 512 may not be equal to the angle between the first deceleration plate 512 and the last deceleration plate 512, but it is best to satisfy that the angle of the latter is greater than or equal to the angle of the former, so as to ensure that the shot can hit all the deceleration plates 512 in sequence, and the shot can be decelerated and released more and more fully. In this embodiment, the two speed reducers 512 are parallel to each other, that is, the angle between the first speed reducer 512 and the base plate 511 is equal to the angle between the first speed reducer 512 and the last speed reducer 512, and each speed reducer 512 is detachably installed between the inner walls of the shell 1 on both sides of the multi-stage speed reduction chamber 5. The detachable method can be through bolt connection, fastener connection or by stably inserting the speed reducer 512 into the corresponding slot on the shell 1. It is only necessary to ensure that the speed reducer 512 can not only be stably installed but also can be quickly disassembled. Since the speed reducer 512 is the most critical and front-end component for decelerating the shot material, it is equivalent to acting as a consumable part and needs to be replaced or maintained frequently. Its quick disassembly function can reduce the difficulty of subsequent replacement or maintenance.

[0044] The entire first deceleration assembly 51 and the second deceleration assembly 52 can be in a sealed state, that is, both sides of the first deceleration assembly 51 and the second deceleration assembly 52 are fixed between the inner walls of the shell 1 on both sides of the multi-stage deceleration bin 5, so that the multi-stage deceleration bin 5 is isolated from the wind force adjustment bin 4 to ensure that the pellets will not be easily sucked into the wind force adjustment bin 4 and cause certain waste. However, in this embodiment, in order to fully recover the pellets and impurities and better separate the pellets and impurities, an air regulating port 513 is formed between the ends of the first deceleration plate 512 and the substrate 511 on the side close to each other, and between the ends of the two deceleration plates 512 on the side close to each other. The air regulating port 513 refers to the gap between the two plates on the side close to each other. In another embodiment, the air regulating port 513 can also be obtained by self-processing of the substrate 511 or the deceleration plate 512, and the adjacent plates are sealed. Connection, but this method increases the difficulty of processing. In order to achieve good sealing performance of the first deceleration component 51 in an incompletely sealed state, the lengths of the base plate 511, the deceleration plate 512 and the air regulating port 513 are equal, and the width of the air regulating port 513 is smaller than the diameter of the pellets, so that impurities (relatively smaller in size than the pellets) can pass through, but the pellets cannot pass through. This design is to increase the effective area of ​​the connection between the wind force adjustment bin 4 and the rebound bin 2, so that the negative pressure wind can further directly suck the pellets and impurities in the rebound bin 2 through the wind force adjustment bin 4 (connected to the dust removal system), so that the pellets in the rebound bin 2 can enter the multi-stage deceleration bin 5 more smoothly for recovery under the combined action of the negative pressure suction and the rebound force, thereby avoiding the waste of the pellets caused by the failure of some pellets to be smoothly ejected from the rebound bin outlet 21. In addition, impurities are adsorbed from the rebound bin 2 into the multi-stage deceleration bin 5 and can be directly sucked into the dust removal pipe through the air adjustment port 513, which can reduce the burden of separating impurities in the subsequent separation bin 6 to achieve a more sufficient separation efficiency of the pellets and impurities.

[0045] In order to adapt to different working conditions, some surfaces to be treated are severely rusted or corroded, while others are in a mild state. The total amount of impurities brought up or rebounded after the steel shot impact treatment is different. When there are more impurities, a larger negative pressure suction is required to obtain a higher separation efficiency, and vice versa, a smaller wind force is required. Therefore, we set a wind adjustment component 8 for adjusting the air volume of the air inlet in the wind adjustment bin 4. Specifically, one side of the wind adjustment bin 4 is connected to the air adjustment port 513, and the top of the shell 1 is processed with an air inlet 11 connected to the wind adjustment bin 4. The wind adjustment component 8 is located in the aisle between the air inlet 11 and the air adjustment port 513. It mainly changes the size of the air volume passing through by changing the effective blocking area of ​​its surface. As long as it is a structure that achieves the purpose of adjusting the air by changing its own effective blocking area, it can be used, such as a combination of telescopic connections between multiple plates or a combination of two plates pushed away from or close to each other by a driving member, or a combination of plates and hinges that can change their own inclination angles, and the opening or closing of the channel is achieved by turning. In this embodiment, a combination of multiple plates with telescopic connections is preferred, which is not only reliable in connection and can resist the suction of strong winds, but also convenient in adjustment. Specifically, the wind force adjustment assembly 8 includes at least two windshields 81, and the adjacent windshields 81 are telescopically connected. The telescopic connection method is a combination of a slide groove and a sliding protrusion with a locking bolt, or a combination of a sliding hole and a sliding pin with a self-locking thread, etc., which is the second method here. In addition, there are three windshields 81, and the three windshields 81 are parallel to each other. The middle windshield 81 is used as a reference and has multiple sliding pins formed on one side of the surface. The other two windshields 81 are correspondingly processed with strip-shaped sliding holes. The side windshield 81 is mounted on the sliding pin of the middle windshield 81 through its sliding hole to achieve telescopic connection along the length direction of the strip hole. The sliding pin is processed with threads, and a nut is used to achieve a stable fixed connection between the side windshield 81 and the middle windshield 81. The entire wind force adjustment assembly 8, which is composed of three wind shields 81, is tilted in the wind force adjustment chamber 4, and the side walls of the non-telescopic ends of the side wind shields 81 are non-contactingly close to the side walls of the wind force adjustment chamber 4, and the side walls of the non-telescopic ends of the middle wind shield 81 are fixedly welded to the side walls of the wind force adjustment chamber 4 or detachably connected by bolts. The telescopic function of the wind force adjustment assembly 8 is achieved by adjusting the relative distance between the side wind shields 81 and the middle wind shield 81, thereby achieving the purpose of controlling the air volume entering per unit time between the air inlet 11 and the air regulating port 513. By designing the top wall of the shell 1 at the air inlet 11 as an inspection plate or an inspection port, the purpose of convenient operation of the wind force adjustment assembly 8 can be achieved.

[0046] After being strongly decelerated by the first deceleration component 51, the pellets (including some impurities) have released a large amount of kinetic energy. After that, they can be smoothly guided to the magnetic separation roller mechanism 7 only after buffering, deceleration and guidance. The pellets after greatly decelerating will not cause too much impact damage to the second deceleration component 52 and the magnetic separation roller mechanism 7, which can ensure the second deceleration component 52 and the magnetic separation roller mechanism 7. Long service life. The second deceleration component 52 includes a deceleration arc plate 521 and a primary screening separation plate 523. One end of the deceleration arc plate 521 is connected to the last deceleration plate 512. The connection method can adopt a non-contact connection method to form an air regulating port 513. The other end of the deceleration arc plate 521 and the bottom wall of the inner cavity of the shell 1 form a discharge port 522 that can be connected to the magnetic separation roller mechanism 7. In this embodiment, the longitudinal cross-section of the deceleration arc plate 521 is roughly C-shaped, and the arc center of the deceleration arc plate 521 is located on the side of the deceleration arc plate 521 close to the rebound bin 2, which means that the deceleration arc plate 521 is bent and convex toward the wind force adjustment bin 4, so that the decelerated pellets can be smoothly buffered, decelerated and guided on the inner side of the deceleration arc plate 521. In addition, the end of the deceleration arc plate 521 close to the last deceleration plate 512 is the maximum bend, and the tangent direction of the end of the deceleration arc plate 521 close to the last deceleration plate 512 coincides with the diversion direction of the base plate 511, which can ensure that all pellets can be ejected onto the inner side wall of the deceleration arc plate 521 after multiple stages of deceleration, and the pellets ejected onto the inner side wall of the deceleration arc plate 521 can be initially decelerated through the maximum bend, so that the speed of the pellets entering the subsequent part with a small bend angle can be further reduced. The steel shot enters the second deceleration component 52 under the strong deceleration action of the first deceleration component 51, which can ensure that the second deceleration component 52 will not be severely impacted and cause a serious reduction in service life. The buffering deceleration function of the second deceleration component 52 itself can also ensure that itself and the part close to the magnetic separation drum mechanism 7 will not cause serious impact damage.

[0047] The primary screening separation plate 523 is installed inside the shell 1 on the side where the arc center of the deceleration arc plate 521 is located, that is, on the concave side. The two sides of the primary screening separation plate 523 are detachably connected to the shell 1 using the detachable connection method between the deceleration plate 512 and the shell 1. The primary screening separation plate 523 is located between the air regulating port 513 and the line connecting the discharge port 522, and an upper passage 524 is formed between the upper end of the primary screening separation plate 523 and the deceleration arc plate 521 for the passage of relatively high-speed and relatively large kinetic energy pills, and a lower passage 525 is formed between the lower end of the primary screening separation plate 523 and the bottom wall of the inner cavity of the shell 1 for the passage of pills (including impurities) that have fully released their kinetic energy. The design of this primary screening separation plate 523 can add a barrier between the air regulating port 513 and the discharge port 522 to achieve the purpose of re-separation and re-deceleration of the pills and impurities. Specifically, the lower end of the primary screening separation plate 523 is inclined toward the base plate 511, and is preferably parallel to the base plate 511. A plurality of sieve holes 526 are processed on the primary screening separation plate 523, and the size of the sieve holes 526 is slightly larger than the diameter of the steel shot. After the shot and impurities ejected from the rebound bin 2 are strongly decelerated by the first deceleration component 51, some shot with relatively small kinetic energy, especially most of the impurities (impurities are light in mass and have small kinetic energy), fall directly downward or are ejected at a small angle after the first level of deceleration, and can directly fall on the primary screening separation plate 523. Due to their relatively small rolling friction, the steel shots can directly roll from the sieve hole 526 or along the bottom of the primary screening separation plate 523 to the bottom wall of the inner cavity of the shell 1 and enter the discharge port 522. However, the impurities do not have a smooth rolling function, and most of them stay on the primary screening separation plate 523, and a small part falls on the bottom wall of the inner cavity of the shell 1 through the sieve hole 526. Since the specific position and orientation of the primary screening separation plate 523 are conducive to the wind suction effect of the air regulating port 513, most of the impurities on it can pass through the air regulating port 513 and enter the wind force adjustment bin 4 for recovery. The design of the second deceleration component 52 can not only further buffer, decelerate and guide the shot materials and impurities after strong deceleration, but also further screen and separate the shot materials and impurities to improve the separation efficiency of the subsequent magnetic separation drum mechanism 7.

[0048] Since the magnetic separation roller mechanism 7 adopts the magnetic attraction rotation separation technology, the outer roller in the magnetic separation roller mechanism 7 rotates, and the semi-cylindrical magnet on the inner side is fixed and close to the side of the discharge port 522. The steel shot is adsorbed on the outer roller when it is close to the magnetic separation roller mechanism 7. When the outer roller rotates counterclockwise to the part that is separated from the magnet, the steel shot loses its magnetism and is thrown into the shot collection bin 3. Since some steel shots fail to separate from the outer roller in time or are delayed in separating from the outer roller due to residual magnetism or weak magnetism, these steel shots will be thrown into the housing 1 directly above the magnetic separation roller mechanism 7. Although most of the steel shots can fall back smoothly, some of these steel shots do not fall back smoothly to the discharge port 522, but fall directly into the separation bin 6 and are absorbed into the dust removal system, and cannot be magnetically separated again, resulting in a waste of steel shots. To overcome this problem, reflux wing plates 9 are fixed on the inner cavity walls of the shell 1 on both sides above the magnetic separation drum mechanism 7. The reflux wing plates 9 are located directly above the discharge port 522, and the lower ends of the reflux wing plates 9 on both sides are close to or retracted to each other. In this way, the steel shots thrown onto the top of the magnetic separation drum mechanism 7 can smoothly roll down along the reflux wing plates 9 on both sides to the middle of the discharge port 522, which can almost avoid the steel shots from falling directly into the separation bin 6 and causing waste.

[0049] In order to ensure that all the steel shots after magnetic separation enter the shot collecting bin 3 and to achieve the purpose of timely replenishing the shot, the shot collecting bin 3 is located in the shell 1 on the side of the magnetic separation roller mechanism 7 away from the rebound bin 2. The shot collecting bin 3 includes a feeding bin 32 and a recovery bin 31. The recovery bin 31 is located between the feeding bin 32 and the magnetic separation roller mechanism 7, and a sorting sedimentation plate 34 is fixed on the inner cavity wall of the shell 1 above the recovery bin 31. The function of the sorting sedimentation plate 34 is roughly similar to that of the primary screening separation plate 523. The upper end of the sorting sedimentation plate 34 is welded to or detachably connected to the top wall of the inner cavity of the shell 1 at the recovery bin 31, and the left and right ends of the sorting sedimentation plate 34 are welded to or detachably connected to the inner cavity side wall of the shell 1, and the detachable connection method adopts any of the aforementioned detachable connection methods. The lower end of the sorting and settling plate 34 is inclined toward the side of the magnetic separation roller mechanism 7, and the lower end of the sorting and settling plate 34 is bent toward the side where the magnetic separation roller mechanism 7 is located while being inclined, and the bending angle range is 60 to 120 degrees, preferably 90 degrees. A plurality of through holes are processed on the bent portion, and the through hole size is larger than the diameter of the steel shot. When part of the steel shot thrown by the outer roller directly hits the inclined portion of the upper part of the sorting and settling plate 34, it falls to the bent portion through the hole and falls back into the recovery bin 31 to wait for the next cycle.

[0050] In order to increase the total amount of steel shots according to different working conditions and to cope with the problem of shot consumption and replenishment, the shell 1 is provided with at least one feeding hopper 33 connected to the feeding bin 32. In the present embodiment, there are two feeding hoppers 33, which are respectively located on the shell 1 on both sides of the feeding bin 32. The feeding hopper 33 is connected to the feeding bin 32 through a number of circular holes processed on the shell 1. The size of the circular hole is about three times larger than the size of the steel shot, which can prevent large particles of debris from entering the feeding bin 32 through the feeding hopper 33. A material door is hinged at the entrance of the feeding hopper 33, and the material door can be closed when no material is added to ensure the overall good airtightness of the shell 1. The bottom of the feeding bin 32 is connected to the bottom of the recovery bin 31. In order to further prevent large particles of foreign matter from entering the recovery bin 31, a screen is installed at the upper opening of the feeding bin 32 and the recovery bin 31. The mesh size of the screen is 1.5 to 2 times the size of the steel shot, and the screen can be movably placed at the upper opening of the feeding bin 32 and the recovery bin 31 through multiple support rods fixed in the shell 1. Similarly, in order to facilitate the cleaning of impurities on the screen, the side wall panel of the shell 1 on at least one side of the feeding bin 32 and the recovery bin 31 is detachably installed. The side panel is preferably a top side panel, which is detachably assembled on the entire shell 1 as an inspection panel or inspection port.

[0051] The shot separation system provided in this embodiment has a very high shot recovery rate, which can greatly avoid unnecessary loss of shot. Under the premise that the loss rate of shot is guaranteed, the separation rate of impurities and shot needs to be further optimized. A separation bin 6 is provided in the shell 1 below the magnetic separation drum mechanism 7. The separation bin 6 is connected to the dust removal system through a dust removal pipe. The separation bin 6 is mainly used to recover impurities that slide directly into the separation bin 6 through the discharge port 522. In order to adapt to the working conditions with different impurity contents, at least one air regulating port 61 connected to the separation bin 6 is processed on the shell 1. In this embodiment, there are preferably two air regulating ports 61, which are respectively located on the shell 1 on both sides of the separation bin 6. An air regulating component 62 is installed in the air regulating port 61. Among them, the air regulating port 61 can be in the form of a through hole or a combination of multiple through holes arranged evenly in a circle. When there is one through hole, the air regulating component 62 is in the form of an air regulating valve. In the present embodiment, the air regulating port 61 is composed of a plurality of through holes arranged in a uniform circular pattern. The number of through holes is preferably three, and the three through holes are arranged in a regular triangle. In the other embodiments, the through holes may also be four, five or more, as long as the circular pattern is satisfied. The air regulating component 62 in the present embodiment includes a rotary screw and a sealing fan blade fixed on the rotary screw. The sealing fan blade is formed with a plurality of blades equal to the number of through holes. The arrangement of the plurality of blades is the same as the arrangement of the plurality of through holes. The rotary screw moves through or is fixed through the end face center of the sealing fan blade and is screwed to the side wall of the housing 1. By rotating the rotary screw, the blades of the sealing fan blade can be adjusted to open, seal or partially seal all through holes, thereby achieving the purpose of adjusting the air intake. By adding the air regulating component 62, the air intake of the separation bin 6 can be changed at any time, so as to timely adjust the magnitude of the negative pressure wind force to adjust the rate at which impurities are sucked away, and finally achieve the optimal separation efficiency of steel shot and impurities.

[0052] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the present invention.

Claims

1. A shot separation system, comprising a housing and a magnetic separation drum mechanism installed in the housing, one side of the housing is connected to a rebound bin, characterized in that: A multi-stage deceleration chamber is arranged in the shell, and the multi-stage deceleration chamber is connected between the rebound chamber and the magnetic separation drum mechanism, and the multi-stage deceleration chamber includes: The first deceleration component is connected between the rebound bin and the second deceleration component and is used to perform a first-stage deceleration on the shot materials ejected from the rebound bin; The second deceleration assembly is connected between the first deceleration assembly and the magnetic separation drum mechanism and is used to perform a second deceleration on the shot material after the first deceleration; The first deceleration assembly includes a base plate and at least one deceleration plate, the base plate is connected to the outer wall at the outlet of the rebound bin and is used to guide the shot material, at least one deceleration plate is arranged between the base plate and the second deceleration assembly, the side of the first deceleration plate connected to the base plate close to the base plate is located on the outside of the base plate in the diversion direction, the side of the first deceleration plate away from the base plate is located on the inside of the base plate in the diversion direction, and the connection method between adjacent deceleration plates is the same as the connection method between the first deceleration plate and the base plate; Air regulating ports are formed between the ends of the first speed reducer and the base plate on the side close to each other and between the ends of the adjacent speed reducers on the side close to each other; The first deceleration assembly includes at least two deceleration plates, all of which are parallel to each other, and each deceleration plate is detachably mounted between two side walls of the inner cavity of the shell; A separation bin is also provided in the shell, and the separation bin is located below the magnetic separation drum mechanism. At least one air regulating port connected to the separation bin is processed on the shell, and an air regulating component is installed in the air regulating port.

2. The pellet separation system according to claim 1, characterized in that: The second deceleration assembly includes a deceleration arc plate, one end of which is connected to the last deceleration plate, and the other end forms a discharge port connected to the bottom wall of the shell inner cavity, which can be connected to the magnetic separation drum mechanism, and the arc center of the deceleration arc plate is located on the side of the deceleration arc plate close to the rebound bin.

3. The pellet separation system according to claim 2, characterized in that: The second deceleration assembly also includes a primary screening separation plate, which is installed inside the shell on the side where the arc center of the deceleration arc plate is located. An upper aisle is formed between the upper end of the primary screening separation plate and the deceleration arc plate, and a lower aisle is formed between the upper end of the primary screening separation plate and the bottom wall of the shell inner cavity.

4. The pellet separation system according to claim 3, characterized in that: The lower end of the primary screening separation plate is inclined toward one side of the base plate, and a plurality of sieve holes are processed on the primary screening separation plate.

5. The pellet separation system according to claim 1, characterized in that: A wind force adjustment bin is also provided in the shell, one side of which is connected to the air regulating port, an air inlet connected to the wind force adjustment bin is processed on the shell, and a wind force adjustment component for adjusting the air volume of the air inlet is provided in the wind force adjustment bin.

6. The pellet separation system according to claim 5, characterized in that: The wind force adjustment component comprises at least two wind shields, adjacent wind shields are telescopically connected, and the side walls of the non-telescopic ends of the wind shields are connected to the side walls of the wind force adjustment chamber.

7. The pellet separation system according to claim 1, characterized in that: A pill collecting bin is also provided in the shell, and the pill collecting bin is located on the side of the shell away from the rebound bin. The pill collecting bin includes a feeding bin and a recovery bin, and the recovery bin is located between the feeding bin and the magnetic separation drum mechanism. At least one feeding hopper connected to the feeding bin is provided on the shell, and a sorting sedimentation plate is fixed on the inner cavity wall of the shell above the recovery bin.

8. The pellet separation system according to claim 2, characterized in that: Reflux wing plates are fixed on the inner cavity walls of the shell on both sides above the magnetic separation drum mechanism. The reflux wing plates are located just above the discharge port, and the lower ends of the reflux wing plates on both sides are close to each other.

Images