Slag and shot screening mechanism and shot blasting machine

Abstract

The present invention relates to the technical field of shot blasting machines, and specifically to a slag shot screening mechanism and a shot blasting machine, comprising a frame, an exciting motor, a sieve plate, a screen and a top cover, wherein the number of the sieve plates is at least 3, and a plurality of the sieve plates are stacked and installed on the upper side of the frame, the exciting motor is installed on the lower side of the frame, and the top cover is installed on the upper side of the sieve plate. A feed inlet and an exhaust outlet are provided on the upper end surface of the top cover, and a plurality of the sieve plates are all provided with a discharge port on the front side. The present invention divides the screen in the sieve plate into a plurality of screens, and only needs to replace the damaged screen when the screen is damaged, thereby saving the maintenance cost of the equipment and improving the maintenance efficiency of the equipment. At the same time, a fixing plate is provided on the screen, and claws, a turntable and a connecting rod mechanism are provided on the fixing plate to cooperate with the plug-in holes on the sieve plate to realize the connection or disassembly between the screen and the sieve plate, thereby simplifying the disassembly and assembly action between the screen and the sieve plate, and further improving the maintenance efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of shot blasting machines, in particular to a slag shot screening mechanism and a shot blasting machine. Background Art

[0002] As a surface treatment equipment for mechanical parts, the shot blasting machine works as follows: the shot is projected onto the surface of the workpiece through a high-speed rotating shot blasting wheel, and the high-speed shot blast collides with the surface of the workpiece, thereby achieving the purpose of cleaning the oxide scale, burrs, rust or paint on the surface of the workpiece, and due to the impact effect of the shot on the surface of the workpiece, the tissue density of the outer surface of the workpiece will be changed, thereby forming a strengthening layer on the surface of the workpiece, achieving the effect of strengthening the surface of the workpiece.

[0003] During the operation of the shot blasting machine, the shot is usually recycled, but the shot after shot blasting will be mixed with unqualified shot, slag and dust. For this reason, the shot blasting machine is equipped with a slag screening mechanism, which can screen out the qualified shot for reuse; common slag screening mechanisms include vibrating screens, magnetic separators and wind separators, among which the vibrating screen is suitable for separating large particles of impurities and shot, and the magnetic separator is only suitable for separating magnetic materials, and cannot separate non-magnetic metals or non-magnetic materials, which has limitations; the wind separator does not need to consider the material of the workpiece, but compared with the vibrating screen, the wind separator is more suitable for separating light particles, and the separation effect of heavy shot and large pieces of slag is poor; when shot blasting castings or forgings, especially Steel forgings, cast iron, cast steel, aluminum alloy castings and aluminum alloy forgings, due to the presence of a large amount of oxide scale on the surface of the workpiece, therefore, in the shot blasting treatment of the above castings and forgings, a vibrating screen is usually used as the slag and shot screening mechanism of the shot blasting machine to ensure the separation effect and efficiency of the shot and impurities; however, the flaky oxide scale and fibrous oxide scale on the surface of the castings and forgings are easily inserted into the sieve holes of the screen, thereby causing the sieve holes to be blocked or damaged, which in turn leads to a decrease in screening efficiency and screening effect, and ultimately leads to a decrease in shot blasting effect; during routine operations, the screen is usually disassembled and cleaned every shift or when a specific time is reached. At present, the integrated screen needs to be replaced as a whole after it is damaged, the maintenance cost is high, and the entire screen needs to be disassembled and then installed, the maintenance time is long, and the workload is large.

[0004] In response to the above problems, the prior art provides some solutions. For example, the utility model patent with application number CN202220656538.8 provides a linear vibrating screen structure. The invention sets the screen as a split structure, and the screen and the screen plate frame body are connected by plugging. When one of the screens is blocked or damaged, the screen can be removed by releasing the extrusion bolts of the corresponding screen plate, avoiding the need to replace the entire screen, thereby reducing maintenance costs. However, the scheme does not provide a tensioning structure for the screen. When installing the screen, it is necessary to strictly control the unfolded size of each screen. If the size is too large, the screen will easily become loose, thereby reducing the screening effect; if the size is too small, the screen will easily become overly tight, causing the screen to be easily torn or damaged when impacted. Summary of the invention

[0005] The object of the present invention is to provide a slag shot screening mechanism and a shot blasting machine to solve the problem that when the shot blasting machine is performing shot blasting on castings or forgings, flaky oxide scales and fibrous oxide scales are easily inserted into the sieve holes, causing the sieve holes to be blocked or damaged, and the maintenance time for replacing the entire sieve is long and the maintenance cost is high, while solving the deficiencies in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A slag shot screening mechanism comprises a frame, an exciting motor, a sieve plate, a sieve mesh and a top cover, wherein the number of the sieve plates is at least 3, and a plurality of the sieve plates are stacked and installed on the upper side of the frame, the exciting motor is installed on the lower side of the frame, and the top cover is installed on the upper side of the sieve plates. A feed inlet and an exhaust outlet are provided on the upper end surface of the top cover, and a plurality of the sieve plates are provided with a discharge outlet on their front sides.

[0008] Specifically, each of the sieve trays is provided with a plurality of sieves, and a plurality of the sieves are provided with a fixing plate, the fixing plate comprising a mounting portion, a bending portion and a positioning portion, the mounting portion is located in the middle of the fixing plate, the positioning portions are 2 in number, and are respectively mounted on the front and rear sides of the mounting portion, the mounting portion and the two positioning portions are connected via a bending portion, a plug-in assembly is provided in the mounting portion, compensation grooves are provided on the upper and lower sides of the bending portion, a transverse positioning assembly and a longitudinal positioning assembly are provided on the positioning portion and the sieve, a plurality of plug-in holes are provided in the sieve tray, and the plurality of plug-in holes correspond to a plurality of plug-in assemblies respectively, and when the plug-in assemblies are inserted into the plug-in holes, the fixing plate is locked with the sieve tray, and at the same time, the fixing plate locks the sieve via the transverse positioning assembly and the longitudinal positioning assembly

[0009] It should be noted that the installation direction of the vibration motor is that the motor shaft is installed horizontally, that is, the vibration direction of the vibration motor is longitudinal and vertical. During operation, the vibration motor is started, and the vibration motor drives the sieve plate to vibrate. The slag and pills enter the sieve plate from the feed port and follow the vibration of the sieve plate. The slag and pills are discharged from the sieve plate pills from different discharge ports under the screening of the screen. The pills are further screened by the screen into qualified pills and unqualified pills, and discharged from different discharge ports. During the screening process, the exhaust port is in a negative pressure state, and the dust and light slag entering the sieve plate are discharged from the exhaust port outside the sieve plate driven by the negative pressure airflow.

[0010] Furthermore, when the screen is blocked or damaged, it is necessary to determine the screen that can continue to be used and the screen that is damaged and cannot be used, and pull the plug-in assembly out of the plug-in hole, thereby releasing the lock between the fixed plate and the screen plate, and at the same time releasing the lock of the fixed plate on the screen. At this time, the screen is in an active state, and the blocked or damaged screen is removed, and then the cleaned or intact screen is installed in the screen plate, and the plug-in assembly is aligned with the plug-in hole, and then the fixed plate is pressed down. After the plug-in assembly is inserted into the plug-in hole, the fixed plate is locked with the screen plate, and the fixed plate locks the screen, thereby completing the replacement of the screen; by splitting the screen in the sieve plate into multiple, after the screen is damaged, only the damaged screen needs to be replaced, which saves the maintenance cost of the equipment. At the same time, for the blocked screen, only a single blocked screen needs to be disassembled and cleaned, which improves the maintenance efficiency of the equipment, and the connection between the screen and the sieve plate is achieved through the cooperation of the plug-in assembly and the plug-in hole, which simplifies the disassembly and assembly action between the screen and the sieve plate, and further improves the maintenance efficiency of the equipment.

[0011] Furthermore, a bending portion is provided on the fixing plate, and compensation grooves are provided on the upper and lower sides of the bending portion. When the plug-in component is inserted into the plug-in hole, the compensation effect of the bending portion is used to achieve the tightening effect of the screen, while avoiding excessive tightening of the screen, thereby increasing the service life of the screen. The screen is fixed by the transverse positioning component and the longitudinal positioning component, thereby avoiding the collapse of the screen when impacted by shot and slag, thereby ensuring the tightening effect of the screen in the sieve plate, and further ensuring the screening effect of the screen.

[0012] Preferably, the plug-in assembly includes a claw, a connecting rod, a rotating shaft, a scroll spring, a rotating disk and a knob, the mounting portion is provided with a mounting hole running through the upper and lower sides, the mounting hole is stepped, the rotating shaft is rotatably connected to the mounting hole, and the upper end of the rotating shaft extends to the outside of the mounting portion, the upper end of the rotating shaft is coaxially connected to the knob, the scroll spring is located in the mounting hole, and the inner and outer ends of the scroll spring are respectively connected to the rotating shaft and the inner wall of the mounting hole, the rotating disk is coaxially fixedly connected to the rotating shaft, the lower end of the rotating disk is provided with two symmetrically arranged pins, when the scroll spring is in a relaxed state, the two pins are respectively located on the front and rear sides of the sieve plate, the plug-in hole is waist-shaped, and the plug-in The length direction of the hole points to the front and rear sides of the sieve plate. Two waist-shaped slide grooves are opened on the lower side of the mounting portion. The length direction of the slide grooves points to the front and rear sides of the sieve plate. Both slide grooves are connected to the mounting hole, and the two slide grooves are symmetrical about the mounting hole. The number of the claws is 2, and they are slidably installed in the slide grooves respectively. The claws include a connecting part, a sliding part and a plug-in part from top to bottom. The claws are "L"-shaped, and a flange is provided on the lower side wall of the plug-in part. The flanges of the front and rear claws point to the front and rear sides respectively. The sliding part is a non-rotating structure. The connecting part extends into the mounting hole. One end of the connecting rod is rotatably connected to the connecting part, and the other end is rotatably connected to the pin shaft.

[0013] When the fixed plate and the sieve plate are unlocked, the knob is turned, and the knob drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the volute spring to be compressed, and the rotating plate rotates with the rotating shaft. When the rotating shaft rotates, the connecting rod and the pin shaft rotate relatively, and the pin shaft pulls the connecting rod to swing. During the swinging process of the connecting rod, the claw slides along the slide groove in the direction close to the rotating shaft; since the sliding part is a non-rotating mechanism, the claw cannot rotate during the sliding process, thereby avoiding the change of the direction of the flange; with the rotation of the knob, the claws on both sides gradually slide in the direction close to the rotating shaft until the flanges on both sides are retracted into the vertical projection plane of the plug-in hole, the limiting effect between the claw and the plug-in hole is released, and the knob is pulled upward, and the claw is pulled out of the plug-in hole under the action of the pulling force, thereby releasing the lock between the fixed plate and the sieve plate; through the setting of the above preferred scheme, the disassembly between the fixed plate and the sieve plate can be completed by turning and pulling the knob, which simplifies the disassembly and assembly action between the screen and the sieve plate, thereby improving the maintenance efficiency of the equipment.

[0014] When the locking cam is in a state of being loosened, the two locking cams are in a state of being loosened and ...

[0015] Furthermore, when the fixed plate is connected to the sieve plate, the two pin shafts are respectively located on the front and rear sides of the sieve plate. At this time, the two connecting rods respectively point to the front and rear sides of the sieve plate, that is, the connecting rod is located at the dead point, and the excitation direction of the sieve plate is longitudinal and vertical. Since the connecting rod is located at the dead point, the longitudinal vibration cannot cause the connecting rod to swing, and the vertical vibration cannot affect the vertical limit between the flange and the plug hole, thereby avoiding the separation of the claw and the plug hole during the vibration of the sieve plate, thereby ensuring the connection stability between the fixed plate and the sieve plate.

[0016] Preferably, an inclined groove is provided at one end of the positioning portion away from the bending portion, and the inclined groove is located on the upper side of the positioning portion. Limit blocks are provided at both front and rear ends of the fixing plate, and the limit blocks are connected to the sieve plate. The limit blocks are "T" shaped, and guide surfaces cooperating with the inclined groove are provided on both front and rear sides of the limit block.

[0017] Preferably, the longitudinal positioning assembly includes a horizontal lead edge, an arc block and an arc groove, the horizontal lead edge is arranged on the front and rear sides of the screen, the arc block is connected to the horizontal lead edge, and four arc blocks are arranged on a single screen, and the four arc blocks are respectively arranged at the four corners of the screen, and the arc groove is arranged at the end of the positioning part away from the bending part, and the arc block abuts against the inside of the arc groove when the plug-in part is inserted into the plug-in hole, and the arc block is made of elastic rubber material.

[0018] When fixing the screen and the screen plate, the screen is unfolded into the screen plate. Since the screen is usually stored in a curled state, the screen can easily form a curved surface, resulting in the unfolded length of the screen being less than the actual length. The fixing plate is bent by the bending portion, and the fixing plate is arched, and the arc blocks before and after the screen are embedded in the arc groove, and the arc groove abuts against the arc blocks; when the plug-in portion is inserted into the plug-in hole, the limit blocks on the front and rear sides of the fixing plate are first embedded in the inclined groove, and after the upper surface of the inclined groove contacts the guide surface, the positioning blocks on both sides extend to the front and rear sides respectively under the guiding action of the guide surface, and the arch-shaped fixing The plate is gradually unfolded, and during the unfolding process of the fixed plate, the arc blocks on the front and rear sides of the screen are pushed forward and backward respectively, so that the screen is flattened to the actual length, thereby ensuring the unfolding effect of the screen; when the plug-in part is fully inserted into the plug-in hole, the fixed plate is locked with the sieve plate, at this time, the bottom surface of the mounting part is fitted with the upper surface of the screen, and the screen under the mounting part is fitted with the sieve plate, and at the same time, with the cooperation of the limit block and the inclined groove, the bottom of the positioning part is fitted with the upper surface of the screen, and the screen under the positioning part is fitted with the sieve plate, thereby ensuring the fitting installation between the fixed plate, the screen and the sieve plate.

[0019] After the fixed plate is connected to the sieve plate, the compensation effect of the bending part and the arc block ensures the tension of the sieve in the longitudinal direction, and the arc block made of rubber avoids the tearing of the sieve due to excessive tension. That is, during the locking process of the sieve and the sieve plate, after the sieve is unfolded to the actual length, if the fixed plate continues to push the arc block, the arc block will undergo elastic deformation, ensuring the tension of the sieve, thereby ensuring the screening effect of the sieve and the integrity of the sieve.

[0020] Through the cooperation of the inclined groove and the guide surface, the vertical freedom of the front and rear ends of the fixed plate is limited, so that the front and rear ends of the fixed plate are prevented from warping when subjected to vertical exciting force, resulting in the separation of the fixed plate, the screen and the sieve plate, thereby ensuring the fitting installation between the fixed plate, the screen and the sieve plate; at the same time, after the fixed plate and the sieve plate are locked, the longitudinal support of the fixed plate is the limit blocks on both sides, thereby preventing the claws from becoming the main force-bearing parts when the fixed plate is subjected to longitudinal exciting force, avoiding deformation or damage of the claws and the connecting rod due to the longitudinal exciting force, and ensuring the connection stability between the fixed plate and the sieve plate.

[0021] Preferably, the transverse positioning assembly includes a longitudinal lead edge, a toothed protrusion and a toothed groove, the longitudinal lead edge is arranged on the left and right sides of the screen, the toothed protrusion is arranged on the upper surface of the longitudinal lead edge, the toothed protrusion extends in the longitudinal direction, and there are multiple toothed protrusions, and the lower end surface of the positioning portion is provided with multiple toothed grooves meshing with the toothed protrusions.

[0022] Preferably, a positioning block is provided at one end of the inclined groove away from the screen, and positioning grooves are provided on both the front and rear sides of the limiting groove, and the positioning block is inserted into the positioning groove when the plug-in portion is inserted into the plug-in hole.

[0023] When the screen and the sieve plate, the fixing plate and the sieve plate are locked, the fixing plate, the screen and the sieve plate fit together, and the tooth-shaped protrusions are embedded in the tooth-shaped grooves, thereby preventing the screen from collapsing in the lateral direction when the screen is impacted by shot and slag, ensuring the tightening effect of the screen in the lateral direction, and further ensuring the screening effect of the screen.

[0024] Since the plug-in hole and the claw are located on the lower side of the fixed plate, it is easy to have problems with the positioning and calibration of the claw and the plug-in plate when the fixed plate and the sieve plate are locked. By cooperating and installing the positioning block and the positioning groove, when the fixed plate and the sieve plate are connected, the positioning block is aligned and inserted into the positioning groove, thereby ensuring the lateral positioning of the fixed plate, facilitating the installation operation of maintenance personnel and improving the maintenance efficiency of the equipment.

[0025] Furthermore, after the fixed plate and the sieve plate are locked, the positioning block is embedded in the positioning groove. The positioning groove limits the positioning block laterally, thereby preventing the sieve from pulling the positioning rod to cause horizontal bending of the front and rear ends of the fixed plate and loosening of the sieve when the sieve is impacted, thereby ensuring the structural stability of the fixed plate and the tightening effect of the sieve, thereby ensuring the screening effect of the sieve.

[0026] Preferably, the upper end surface of the inclined groove and the side of the positioning groove close to the screen are both provided with compensation pads, and the compensation pads are made of elastic material, and the elastic material includes any one of nitrile rubber, fluororubber or natural rubber.

[0027] By arranging compensation pads on the upper end surface of the inclined groove and the side of the positioning groove close to the screen, after the screen is impacted, the compensation block undergoes elastic deformation to have a buffering effect on the screen, thereby reducing the probability of the tensioned screen being damaged after being impacted and increasing the service life of the screen. At the same time, the compensation pad returns to its initial position after buffering, thereby ensuring the tensioning effect of the screen and further ensuring the screening effect of the screen.

[0028] A shot blasting machine comprises a shot blasting chamber, a shot blasting mechanism, a slag shot conveying mechanism, a shot storage bin, and a dust removal mechanism. The shot blasting mechanism is arranged in the shot blasting chamber, one end of the slag shot conveying mechanism is located in the shot blasting chamber, and the other end is connected to a feed port, the discharge port is connected to the shot storage bin, the shot storage bin is connected to the shot blasting mechanism, and the exhaust port is connected to the dust removal mechanism.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention splits the sieve in the sieve plate into multiple parts. When the sieve is damaged, only the damaged sieve needs to be replaced, which saves the maintenance cost of the equipment and improves the maintenance efficiency of the equipment. At the same time, a fixed plate is provided on the sieve, and claws, a turntable and a connecting rod mechanism are provided on the fixed plate to cooperate with the plug-in holes on the sieve plate to realize the connection or disassembly between the sieve and the sieve plate, which simplifies the disassembly and assembly actions between the sieve and the sieve plate and further improves the maintenance efficiency of the equipment.

[0031] 2. The present invention provides a bending portion on the fixed plate and arc blocks on the four corners of the screen. The compensation effect of the bending portion and the arc blocks ensures the tension of the screen in the longitudinal direction, thereby ensuring the screening effect of the screen. The arc blocks made of rubber avoid excessive tension of the screen or tearing of the screen after impact, thereby increasing the service life of the screen.

[0032] 3. The present invention provides toothed grooves on the fixing plate and toothed protrusions on the screen. When the screen and the sieve plate, the fixing plate and the sieve plate are locked, the toothed protrusions are embedded in the toothed grooves, thereby preventing the screen from collapsing in the lateral direction when the screen is impacted by the shot and slag, thereby ensuring the tightening effect of the screen in the lateral direction, and further ensuring the screening effect of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the slag ball screening mechanism of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the slag shot screening mechanism of the present invention after removing the top cover;

[0035] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0036] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0037] Figure 5 for Figure 3 Full section view at CC;

[0038] Figure 6 for Figure 3 Full section view at DD in the middle;

[0039] Figure 7 It is an exploded view of the mounting portion of the fixing plate in the present invention;

[0040] Figure 8 It is a schematic diagram of the overall structure of the fixing plate in the present invention;

[0041] Fig. 9 It is a schematic diagram of the structure of the screen of the present invention.

[0042] In the figure: 1, frame; 2, top cover; 201, feed port; 202, exhaust port; 3, sieve plate; 301, discharge port; 302, plug hole; 4, fixing plate; 401, mounting part; 4011, mounting hole; 4012, slide groove; 402, bending part; 4021, compensation groove; 403, positioning part; 4031, inclined groove; 4032, toothed groove; 4033, arc groove; 4034, positioning block; 5, sieve; 501, longitudinal lead edge; 5011, toothed protrusion; 502, transverse lead edge; 503, arc block; 6, claw; 601, connecting part; 602, sliding part; 603, plug-in part; 604, flange; 7, connecting rod; 8, rotating shaft; 9, scroll spring; 10, turntable; 1001, pin shaft; 11, knob; 12, limit block; 1201, guide surface; 1202, positioning groove; 13, compensation pad; 14, vibration motor. DETAILED DESCRIPTION

[0043] See also Figures 1 to 9 The present invention provides a slag shot screening mechanism and a shot blasting machine, and the technical solution is as follows:

[0044] See also Figures 1 to 5 , Figure 7A slag shot screening mechanism includes a frame 1, an exciting motor 14, a sieve plate 3, a screen 5 and a top cover 2. The number of sieve plates 3 is 3, and the sieve plates 3 are stacked and installed on the upper side of the frame 1. The exciting motor 14 is installed on the lower side of the frame 1. The top cover 2 is installed on the upper side of the sieve plate 3. The upper end surface of the top cover 2 is provided with a feed inlet 201 and an exhaust port 202. The front sides of the multiple sieve plates 3 are provided with a discharge port 301. Each sieve plate 3 is provided with 6 screens 5. Each screen 5 is provided with a fixing plate 4. The fixing plate 4 includes a mounting portion 401, a bending portion 402 and a positioning portion 403. The mounting portion 401 is located on the fixing plate 4. The number of positioning parts 403 is 2, and they are respectively installed on the front and rear sides of the mounting part 401. The mounting part 401 and the two positioning parts 403 are connected through the bending part 402. The upper and lower sides of the bending part 402 are provided with compensation grooves 4021. The mounting part 401 is provided with a mounting hole 4011 running through the upper and lower sides. The mounting hole 4011 is stepped. The rotating shaft 8 is rotatably connected with the mounting hole 4011, and the upper end of the rotating shaft 8 extends to the outside of the mounting part 401. The upper end of the rotating shaft 8 is coaxially connected with the knob 11. The spiral spring 9 is located in the mounting hole 4011, and the inner and outer ends of the spiral spring 9 are respectively The rotating disk 10 is connected to the rotating shaft 8 and the inner wall of the mounting hole 4011. The rotating disk 10 is coaxially fixedly connected to the rotating shaft 8. The lower end of the rotating disk 10 is provided with two symmetrically arranged pins 1001. When the scroll spring 9 is in a relaxed state, the two pins 1001 are respectively located at the front and rear sides of the sieve plate 3. A plurality of waist-shaped plug holes 302 are provided in the sieve plate 3, and the length direction of the plug holes 302 points to the front and rear sides of the sieve plate 3. Two waist-shaped slide grooves 4012 are opened on the lower side of the mounting portion 401. The length direction of the slide grooves 4012 points to the front and rear sides of the sieve plate 3. The two slide grooves 4012 are aligned with the mounting hole 401. 1 is connected, and the two slide grooves 4012 are symmetrical about the mounting hole 4011. The number of the claws 6 is 2, and they are slidably installed in the slide grooves 4012 respectively. The claws 6 include a plug-in portion 603, a sliding portion 602 and a connecting portion 601 from top to bottom. The claws 6 are "L"-shaped. A flange 604 is provided on the lower side wall of the plug-in portion 603. The flanges 604 of the front and rear claws 6 point to the front side and the rear side respectively. The sliding portion 602 is a non-rotating structure. The connecting portion 601 extends into the mounting hole 4011. One end of the connecting rod 7 is rotatably connected to the connecting portion 601, and the other end is rotatably connected to the pin shaft 1001.

[0045] For further information, see Figures 4 to 6 , Figure 8, an end of the positioning portion 403 away from the bending portion 402 is provided with an inclined groove 4031, and the inclined groove 4031 is located on the upper side of the positioning portion 403, and limit blocks 12 are provided at both the front and rear ends of the fixing plate 4, and the limit blocks 12 are connected to the sieve plate 3, and the limit blocks 12 are "T"-shaped, and the front and rear sides of the limit blocks 12 are provided with guide surfaces 1201 that cooperate with the inclined groove 4031; wherein, longitudinal lead edges 501 are provided on the left and right sides of the sieve 5, and a toothed protrusion 5011 is provided on the upper surface of the longitudinal lead edge 501, and the extension direction of the toothed protrusion 5011 is longitudinal, and there are multiple toothed protrusions 5011, and the lower end surface of the positioning portion 403 is provided with a plurality of toothed grooves 4032 that mesh with the toothed protrusions 5011.

[0046] For further information, see Figure 3 , Figure 4 and Fig. 9 , horizontal lead edges 502 are provided on the front and rear sides of the screen 5, and four arc blocks 503 are provided on a single screen 5, and the four arc blocks 503 are respectively arranged at the four corners of the screen 5, and an arc groove 4033 is provided at the end of the positioning portion 403 away from the bending portion 402. When the plug-in portion 603 is inserted into the plug-in hole 302, the arc block 503 abuts against the inside of the arc groove 4033, and the arc block 503 is made of fluororubber; a positioning block 4034 is provided at the end of the inclined groove 4031 away from the screen 5, and positioning grooves 1202 are provided on the front and rear sides of the limiting groove. When the plug-in portion 603 is inserted into the plug-in hole 302, the positioning block 4034 is inserted into the positioning groove 1202; a compensation pad 13 is provided on the upper end surface of the inclined groove 4031 and the side of the positioning groove 1202 close to the screen 5, and the compensation pad 13 is made of fluororubber.

[0047] It should be noted that the slag shot screening mechanism described above is configured for use in a shot blasting machine (not shown in the drawings), wherein the shot blasting machine includes a shot blasting chamber, a shot blasting mechanism, a slag shot conveying mechanism, a shot storage bin, and a dust removal mechanism. The shot blasting mechanism is arranged in the shot blasting chamber, one end of the slag shot conveying mechanism is located in the shot blasting chamber, and the other end is connected to the feed port 201, the discharge port 301 is connected to the shot storage bin, the shot storage bin is connected to the shot blasting mechanism, and the exhaust port 202 is connected to the dust removal mechanism.

[0048] See also Figures 1 to 9When installing the screen 5 into the screen plate 3, unfold the screen 5 into the screen plate 3, bend the fixing plate 4 into an arch shape by bending the bending portion 402, and insert the arc blocks 503 before and after the screen 5 into the arc groove 4033, and the arc groove 4033 abuts against the arc block 503; align the positioning block 4034 with the positioning groove 1202, and after the positioning block 4034 is aligned with the positioning groove 1202, turn the knob 11 clockwise, and the knob 11 drives the rotating shaft 8 to rotate clockwise. The rotating shaft 8 rotates, and the spiral spring 9 is compressed. At the same time, the rotating disk 10 follows the rotating shaft 8 to rotate clockwise. At this time, the connecting rod 7 and the pin 1001 rotate relative to each other. At the same time, the pin 1001 pulls the connecting rod 7 to swing. During the swinging process of the connecting rod 7, the claw 6 slides along the slide groove 4012 toward the direction close to the rotating shaft 8. Continue to rotate the knob 11 until the flanges 604 of the claws 6 on both sides are retracted into the vertical projection plane of the plug-in hole 302, maintain the current angle of the knob 11, and apply The downward pressure is applied to the knob 11, and the claw 6 is inserted into the plug hole 302 under the action of the downward pressure; during the process of inserting the claw 6 into the plug hole 302, the limit block 12 is first embedded in the inclined groove 4031, and after the upper surface of the inclined groove 4031 contacts the guide surface 1201, the positioning blocks 4034 on both sides extend to the front and rear sides respectively under the guidance of the guide surface 1201, and the bow-shaped fixing plate 4 is gradually unfolded; during the process of unfolding the fixing plate 4, the arc-shaped blocks on the front and rear sides of the screen 5 are moved. 503 are pushed forward and backward respectively, so as to flatten the screen 5; when the plug-in portion 603 is fully inserted into the plug-in hole 302, the fixing plate 4 is locked with the sieve plate 3, at this time, the bottom surface of the mounting portion 401 is fitted with the upper surface of the screen 5, and the screen 5 below the mounting portion 401 is fitted with the sieve plate 3, and at the same time, with the cooperation of the limit block 12 and the inclined groove 4031, the bottom of the positioning portion 403 is fitted with the upper surface of the screen 5, and the screen 5 below the positioning portion 403 is fitted with the sieve plate 3.

[0049] When removing the screen 5 from the sieve plate 3, turn the knob 11 clockwise, the knob 11 drives the rotating shaft 8 to rotate clockwise, the rotation of the rotating shaft 8 drives the spiral spring 9 to be compressed, and the turntable 10 rotates clockwise following the rotating shaft 8; at this time, the connecting rod 7 and the pin shaft 1001 rotate relative to each other, and the pin shaft 1001 pulls the connecting rod 7 to swing, and the connecting rod 7 slides the claw 6 along the slide groove 4012 toward the direction of the rotating shaft 8 during the swinging process; continue to turn the knob 11 until the flanges 604 of the claws 6 on both sides are retracted into the vertical projection plane of the plug-in hole 302, the limiting effect between the claw 6 and the plug-in hole 302 is released, pull the knob 11 upwards, and the claw 6 is pulled out of the plug-in hole 302 under the action of the pulling force, thereby releasing the lock between the fixed plate 4 and the sieve plate 3.

[0050] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A slag pellet screening mechanism, comprising a frame (1), an exciting motor (14), a sieve plate (3), a sieve mesh (5) and a top cover (2), wherein the number of the sieve plates (3) is at least three, a plurality of the sieve plates (3) are stacked and installed on the upper side of the frame (1), the exciting motor (14) is installed on the lower side of the frame (1), the top cover (2) is installed on the upper side of the sieve plate (3), a feed inlet (201) and an exhaust outlet (202) are provided on the upper end surface of the top cover (2), and a plurality of the sieve plates (3) are each provided with a discharge outlet (301) on the front side, characterized in that: Each of the sieve plates (3) is provided with a plurality of sieves (5), and a fixing plate (4) is provided on each of the plurality of sieves (5). The fixing plate (4) comprises a mounting portion (401), a bending portion (402), and a positioning portion (403). The mounting portion (401) is located in the middle of the fixing plate (4). The positioning portions (403) are two in number and are respectively mounted on the front and rear sides of the mounting portion (401). The mounting portion (401) is connected to the two positioning portions (403) via the bending portion (402). A plug-in assembly, wherein the upper and lower sides of the bending portion (402) are provided with compensation grooves (4021), the positioning portion (403) and the screen (5) are provided with a transverse positioning assembly and a longitudinal positioning assembly, the screen plate (3) is provided with a plurality of plug-in holes (302), the plurality of plug-in holes (302) respectively correspond to a plurality of plug-in assemblies, and when the plug-in assembly is inserted into the plug-in hole (302), the fixed plate (4) and the screen plate (3) are locked, and at the same time, the fixed plate (4) locks the screen (5) through the transverse positioning assembly and the longitudinal positioning assembly; The plug-in assembly comprises a claw (6), a connecting rod (7), a rotating shaft (8), a scroll spring (9), a rotating disk (10) and a knob (11); a mounting hole (4011) penetrating the upper and lower sides is provided in the mounting portion (401); the mounting hole (4011) is in a stepped shape; the rotating shaft (8) is rotatably connected to the mounting hole (4011); the upper end of the rotating shaft (8) extends outside the mounting portion (401); the upper end of the rotating shaft (8) is coaxially connected to the knob (11); the scroll spring (9) is located at the The spiral spring (9) is in the mounting hole (4011), and the inner and outer ends of the spiral spring (9) are respectively connected to the rotating shaft (8) and the inner wall of the mounting hole (4011); the rotating disk (10) is coaxially fixedly connected to the rotating shaft (8); two pins (1001) are symmetrically arranged at the lower end of the rotating disk (10); when the spiral spring (9) is in a relaxed state, the two pins (1001) are respectively located at the front and rear sides of the sieve plate (3); the plug-in hole (302) is waist-shaped, and the length direction of the plug-in hole (302) is The mounting portion (401) is provided with two waist-shaped slide grooves (4012) pointing to the front and rear sides of the sieve plate (3). The length direction of the slide grooves (4012) points to the front and rear sides of the sieve plate (3). The two slide grooves (4012) are both connected to the mounting hole (4011). The two slide grooves (4012) are symmetrical about the mounting hole (4011). The number of the claws (6) is 2 and they are respectively slidably mounted in the slide grooves (4012). The claws (6) include a connecting portion from top to bottom. (601), a sliding portion (602) and a plug-in portion (603), the claw (6) is in an "L" shape, a flange (604) is provided on the lower side wall of the plug-in portion (603), the flanges (604) of the front and rear claws (6) point to the front side and the rear side respectively, the sliding portion (602) is a non-rotating structure, the connecting portion (601) extends into the mounting hole (4011), one end of the connecting rod (7) is rotatably connected to the connecting portion (601), and the other end is rotatably connected to the pin shaft (1001); An inclined groove (4031) is provided at one end of the positioning portion (403) away from the bending portion (402), and the inclined groove (4031) is located on the upper side of the positioning portion (403). Limit blocks (12) are provided at both the front and rear ends of the fixing plate (4), and the limit blocks (12) are connected to the sieve plate (3). The limit blocks (12) are in a "T" shape, and guide surfaces (1201) that cooperate with the inclined groove (4031) are provided at both the front and rear sides of the limit blocks (12); The transverse positioning component comprises a longitudinal lead edge (501), a toothed protrusion (5011) and a toothed groove (4032); the longitudinal lead edge (501) is arranged on the left and right sides of the screen (5); the toothed protrusion (5011) is arranged on the upper surface of the longitudinal lead edge (501); the toothed protrusion (5011) extends in a longitudinal direction, and there are a plurality of toothed protrusions (5011); and a plurality of toothed grooves (4032) meshing with the toothed protrusions (5011) are provided on the lower end surface of the positioning portion (403).

2. A slag shot screening mechanism according to claim 1, characterized in that: The longitudinal positioning assembly comprises a transverse lead edge (502), an arc block (503) and an arc groove (4033); the transverse lead edge (502) is arranged at the front and rear sides of the screen (5); the arc block (503) is connected to the transverse lead edge (502); four arc blocks (503) are arranged on a single screen (5); the four arc blocks (503) are respectively arranged at four corners of the screen (5); the arc groove (4033) is arranged at an end of the positioning portion (403) away from the bending portion (402); when the plug-in portion (603) is inserted into the plug-in hole (302), the arc block (503) abuts against the inside of the arc groove (4033); and the arc block (503) is made of elastic rubber material.

3. A slag shot screening mechanism according to claim 2, characterized in that: A positioning block (4034) is provided at one end of the inclined groove (4031) away from the screen (5), and positioning grooves (1202) are provided on both the front and rear sides of the limit block (12), and when the plug-in portion (603) is inserted into the plug-in hole (302), the positioning block (4034) is inserted into the positioning groove (1202).

4. A slag shot screening mechanism according to claim 3, characterized in that: The upper end surface of the inclined groove (4031) and the side of the positioning groove (1202) close to the screen (5) are both provided with a compensation pad (13), and the compensation pad (13) is made of an elastic material, and the elastic material includes any one of nitrile rubber, fluororubber or natural rubber.

5. A shot blasting machine, characterized in that: The shot blasting machine is equipped with a slag shot screening mechanism according to any one of claims 1 to 4, and comprises a shot blasting chamber, a shot blasting mechanism, a slag shot conveying mechanism, a shot storage bin, and a dust removal mechanism. The shot blasting mechanism is arranged in the shot blasting chamber, one end of the slag shot conveying mechanism is located in the shot blasting chamber, and the other end is connected to the feed port (201), the discharge port (301) is connected to the shot storage bin, the shot storage bin is connected to the shot blasting mechanism, and the exhaust port (202) is connected to the dust removal mechanism.

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