A self-dusting shot blasting machine

Abstract

The present invention belongs to the technical field of shot blasting machines, and specifically is a self-dust-removing shot blasting machine, comprising: a shot blasting machine body and a first auger at the bottom of the shot blasting machine body; a material collecting barrel arranged at the bottom of the discharging end of the shot blasting machine body; a material lifting unit, the bottom of which is connected to the material collecting barrel and is used to lift the recovered steel shots; by arranging an air interface, when the shot blasting machine continuously outputs steel shots, since the wind wheel is coaxial with the impeller, the wind wheel will also rotate, and negative pressure will be generated at the wind wheel position, so that air flow guidance is generated in the shot blasting machine body, so that the heat generated in the shot blasting machine body enters the shot blasting machine with the air flow, and cooperates with the air interface arranged on the top of the shot blasting machine to guide the air flow containing the heat out, and the wind wheel in the shot blasting machine continuously rotates, so that the air flow guidance can be synchronously maintained, so that the air flow containing the heat can be continuously and continuously guided out, thereby avoiding high temperature accumulation inside the shot blasting machine body, and making dust adsorbed on the surface of the steel shots with higher temperature.

Description

Technical Field

[0001] The invention belongs to the technical field of shot blasting machines, in particular to a self-dust-removing shot blasting machine. Background Art

[0002] After processing of metal parts such as steel plates, shot blasting machines are needed to clean the surface, including removing sand or welding impurities on the surface of the steel plate, removing pouring heads, seams, burrs, and metal oxide scale formed by heat treatment, etc. It can also strengthen the surface of the workpiece, increase the life of the workpiece, remove rust, and remove oxide skin.

[0003] The shot blasting machine is the most important general basic equipment in the workpiece surface cleaning mechanical equipment. The shot blasting machine outputs high-speed steel shots and hits the surface of the workpiece to remove impurities on the surface of the workpiece; a patent with application number 2019101286808 discloses a shot blasting machine with rapid dust removal, including a cleaning chamber, a shot blasting machine, a dust collecting device and a guide rail. An isolation plate is provided in the cleaning chamber, the guide rail is provided above the cleaning chamber and a hanging mechanism is provided on the guide rail, a through groove for the hanging mechanism to enter is provided above the cleaning chamber, a shielding device that can close the through groove is also provided on the cleaning chamber, a connecting groove is provided on the isolation plate and a closing device that can close the connecting groove is provided on the isolation plate, the shot blasting machine is provided on the side wall of the cleaning chamber, a shot blasting recovery channel is provided below the cleaning chamber, a dust separation device and a conveying mechanism are provided on the channel, a dust collecting device is provided in the cleaning chamber, and pipes connected to the dust collecting device are provided on the cleaning chamber and the recovery channel.

[0004] The above patent discloses a dust removal component for a shot blasting machine. During the operation of the shot blasting machine, the dust generated in the shot blasting machine is cleaned to prevent the dust from overflowing and polluting the working environment of the operator. However, in fact, during the operation of the shot blasting machine, only a small amount of dust will overflow, because when the shot blasting machine outputs high-speed steel shots, the steel shots will generate a large amount of heat energy when in contact with the workpiece. The heat accumulation will accelerate the adsorption of dust on the surface of the steel shots, making it difficult to clean the impurities on the steel shots. In the process of recycling the steel shots, the impurities that are difficult to clean will affect the subsequent feeding and discharging of the steel shots.

[0005] To this end, the present invention provides a self-dust removal shot blasting machine. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the technical problems raised in the background technology.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a self-dusting shot blasting machine described in the present invention comprises:

[0008] The shot blasting machine body and the first auger at the bottom of the shot blasting machine body;

[0009] A material receiving cylinder arranged at the bottom of the discharging end of the shot blasting machine body;

[0010] A material lifting unit, the bottom of which is connected to the material collecting barrel and is used to lift the recovered steel shots;

[0011] The material separation and recovery unit connected to the top of the material lifting unit is used to separate the steel shot and impurities;

[0012] A feeding gallery, the feeding gallery being connected to a material separation and recovery unit;

[0013] It also includes a shot blasting machine arranged on the shot blasting machine body; a feeding pipe is connected to one side of the shot blasting machine, and one end of the feeding pipe is connected to the shot blasting machine, and the other end is connected to the feeding gallery; an impeller is rotatably connected to the middle of the shot blasting machine; a baffle is fixed to the middle of the shot blasting machine; a wind wheel is also rotatably connected to the shot blasting machine; the wind wheel and the impeller are respectively located on both sides of the baffle; and an air interface is also provided on the shot blasting machine.

[0014] Preferably, the shot blasting machine body comprises a plurality of shot blasting chambers, and the plurality of shot blasting chambers are fixedly connected end to end;

[0015] It also includes a receiving frame fixedly connected to the ends of the shot blasting chambers at both ends; it also includes a roller fixing frame fixedly connected to the ends of the receiving frame;

[0016] It also includes a mesh conveyor belt that runs through the multiple shot blasting chambers, and both ends of the mesh conveyor belt are fixedly connected to a roller fixing frame via rollers;

[0017] It also includes doors fixedly connected to the ends of the shot blasting chambers at both ends, and brushes fixedly connected to the bottom of the doors, which are used to clean the oil stains on the surface of the steel plate;

[0018] It also includes supporting feet, which are fixed to the bottom of the shot blasting room for support.

[0019] Preferably, a guide plate is fixedly connected to the body of the shot blasting machine, and two guide plates are provided, symmetrically arranged in two separated shot blasting chambers; the guide plate is used to guide the steel shots with reduced kinetic energy.

[0020] Preferably, the shot blasting machine includes a top guard plate, a side guard plate, and an end guard plate; two side guard plates and two end guard plates are provided, and the two side guard plates are respectively fixed to the edges of the two end guard plates; the top guard plate is embedded in and connected to the top of the side guard plate and the end guard plate combination; the air interface is connected to the middle of the top guard plate; the impeller is arranged inside the side guard plate and the end guard plate combination.

[0021] Preferably, the shot blasting machine further comprises a directional sleeve, a shot dividing wheel and a coupling;

[0022] The directional sleeve is inserted in the middle of the impeller, and the pellet-separating wheel is inserted in the directional sleeve; the impeller, the directional sleeve and the pellet-separating wheel are coaxial;

[0023] The directional sleeve is connected to the feeding pipe;

[0024] The pelletizing wheel is plug-fitted with the coupling, and the coupling is fixedly connected to the end of the impeller.

[0025] Preferably, the baffle separates the shot blaster into a first chamber and a second chamber; the impeller is arranged in the first chamber, and the wind wheel is arranged in the second chamber; the second chamber is connected to the air interface.

[0026] Preferably, the end of the receiving barrel is rotatably connected to a second motor, and the output end of the second motor is fixedly connected to a second auger; the second auger is arranged in the receiving barrel, and is used to deliver the steel balls falling into the receiving barrel into the material lifting unit;

[0027] The end of the first auger is fixedly connected to a first motor, and the first auger is driven by the first motor.

[0028] Preferably, a connecting groove is provided at the connection between the material receiving cylinder and the shot blasting chamber; a plurality of straight rods are fixedly connected to the bottom of the connecting groove of the material receiving cylinder, and a filter screen is slidably connected to the straight rods.

[0029] Preferably, a slope block is fixedly connected to the bottom of the receiving barrel, and the slope block is parallel to the filter screen plate; and the end of the first auger passes through the slope block.

[0030] Preferably, a spring is sleeved on the straight rod; two ends of the spring are respectively fixed to the bottom of the receiving barrel and the bottom surface of the filter screen; a vertical rod is fixed to the surface of the filter screen, and the vertical rod is slidably matched with the first auger.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. The self-dusting shot blasting machine described in the present invention has an air interface. When the shot blasting machine continuously outputs steel shots, the wind wheel and the impeller are coaxial, so the wind wheel will also rotate, and negative pressure will be generated at the wind wheel position, so that airflow guidance is generated in the shot blasting machine body, so that the heat generated in the shot blasting machine body enters the shot blasting machine with the airflow, and the airflow containing heat is discharged in cooperation with the air interface set on the top of the shot blasting machine. The wind wheel in the shot blasting machine continuously rotates, and the airflow guidance can be synchronously maintained, so that the airflow containing heat can be continuously discharged, thereby avoiding high temperature accumulation inside the shot blasting machine body, so that dust is adsorbed on the surface of the steel shot with a higher temperature; secondly, due to the formation of the airflow guidance, small particles and small specific gravity dust in the shot blasting machine body can also be discharged from the shot blasting machine body with the airflow, thereby reducing the dust content in the shot blasting machine body;

[0033] 2. The self-dusting shot blasting machine described in the present invention is that the bristles soaked with alkali solution are in contact with the steel plate in advance. Before the steel plate impurity removal process, specifically when the steel plate enters the shot blasting chamber, it will also contact the bristles at the bottom of the baffle. The bristles are soaked with alkali solution, and the oil stains on the surface of the steel plate can be cleaned and decomposed when contacting the steel plate, thereby cleaning the oil stains on the surface of the steel plate. When the steel plate is transported to the bottom of the shot blasting machine, the air flow guide in the shot blasting machine body can air dry the wet steel plate surface.

[0034] When the steel shot is ejected at high speed and hits the cleaned steel plate surface, the oil stain has been removed, so the surface of the steel ball will not be stained with oil, so dust will not easily stick to the steel ball.

[0035] 3. The self-dust-removing shot blasting machine described in the present invention is equipped with a filter screen. After the first auger rotates continuously, a large amount of steel balls and impurity mixture are sent to the filter screen, and the steel balls and impurity mixture are initially filtered and separated by the filter screen. At the same time, since the vertical rod slides with the first auger, when the first auger rotates, it can overcome the elastic potential energy of the spring and squeeze the vertical rod to move downward, so that one end of the filter screen is connected to the second cavity. The steel balls that have been initially filtered on the surface of the filter screen are now merged into the second cavity, and then the steel balls that have been initially filtered are sent to the material lifting unit through the second auger. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] Figure 1 is a stereogram of the present invention;

[0038] Figure 2 is a top view of the present invention;

[0039] Figure 3 yes Figure 2 Cross-sectional view of the middle AA section;

[0040] Figure 4 It is a partial stereogram of the present invention;

[0041] Figure 5 It is a three-dimensional diagram of the shot blasting chamber and the mesh conveyor belt of the present invention;

[0042] Figure 6 It is a three-dimensional diagram of the shot blasting machine of the present invention;

[0043] Figure 7 It is a front view of the shot blasting machine of the present invention;

[0044] Figure 8 yes Figure 7 Cross-sectional view of the middle BB section;

[0045] Fig. 9 It is the first exploded view of the shot blasting machine in the present invention;

[0046] Fig.10 is a second exploded view of the shot blasting machine of the present invention;

[0047] Fig.11 It is a three-dimensional diagram of the shot blasting chamber and the material collecting cylinder in the present invention;

[0048] Fig.12 yes Fig.11 A partial cross-sectional view of .

[0049] In the figure: 1, shot blasting room; 101, door; 102, brush; 103, receiving frame; 104, roller fixing frame; 105, support foot; 106, guide plate; 107, mounting seat; 108, pipe connection port; 109, connecting groove; 2, mesh conveyor belt; 3, first motor; 301, first auger; 4, material separation and recovery unit; 5, feeding gallery; 6, material lifting unit; 7, material collecting barrel; 701, Filter plate; 702, straight rod; 703, spring; 704, vertical pole; 705, second auger; 706, second motor; 707, slope block; 8, shot blaster; 801, feed pipe; 802, top guard plate; 8021, air interface; 803, side guard plate; 804, end guard plate; 805, directional sleeve; 806, impeller; 807, shot dividing wheel; 808, coupling; 809, baffle; 8091, wind wheel. DETAILED DESCRIPTION

[0050] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0051] like Figures 1 to 3 , Figures 6 to 8 As shown, a self-dusting shot blasting machine according to an embodiment of the present invention comprises:

[0052] The shot blasting machine body and the first auger 301 at the bottom of the shot blasting machine body;

[0053] A receiving cylinder 7 is arranged at the bottom of the discharge end of the shot blasting machine body;

[0054] A material lifting unit 6, the bottom of which is connected to a material collecting barrel 7 and is used to lift the recovered steel shots;

[0055] The material separation and recovery unit 4 connected to the top of the material lifting unit 6 is used to separate the steel shot and impurities;

[0056] A feeding gallery 5, wherein the feeding gallery 5 is connected to the material separation and recovery unit 4;

[0057] It also includes a shot blasting machine 8 arranged on the shot blasting machine body; a feeding pipe 801 is connected to one side of the shot blasting machine 8, and one end of the feeding pipe 801 is connected to the shot blasting machine 8, and the other end is connected to the feeding gallery 5; an impeller 806 is rotatably connected to the middle of the shot blasting machine 8; a baffle 809 is fixed to the middle of the shot blasting machine 8; a wind wheel 8091 is also rotatably connected to the shot blasting machine 8; the wind wheel 8091 and the impeller 806 are respectively located on both sides of the baffle 809; an air interface 8021 is also provided on the shot blasting machine 8.

[0058] In the prior art, during the use of the shot blasting machine, for the impurity removal process of the steel plate, when the shot blasting machine 8 outputs a large number of steel shots at high speed and hits the surface of the steel plate, the welding waste on the surface of the steel plate is removed due to the high-speed impact of the steel shots, and a large number of uneven pits are formed on the surface of the steel plate, which is beneficial to the adhesion of the steel plate in the later coating process. However, when the steel shots hit the surface of the steel plate at high speed, the kinetic energy of the steel shots will be converted into the thermal energy of the steel plate and the steel shots due to energy conversion, that is, the steel plate and the steel shots will generate a large amount of heat. At the same time, due to the presence of welding waste and dust on the surface of the steel plate, when the heat inside the shot blasting machine accumulates, the dust may adhere to the surface of the steel shots under the action of high temperature, resulting in the difficulty of removing the agglomerated impurities on the surface of the steel shots in the later stage of steel shot recovery, affecting the recycling of the steel shots;

[0059] As an embodiment of the present invention, when the shot blasting machine in the present invention is used, after the shot blasting machine 8 is started, an external driving motor (not shown in the figure) will drive the impeller 806 to rotate, and the impeller 806 rotates to cooperate with the feeding pipe 801 to continuously feed steel shots, which will eject the steel shots at high speed and hit the surface of the steel plate to achieve the effect of removing impurities. At the same time, when the shot blasting machine 8 continues to output steel shots, since the wind wheel 8091 is coaxial with the impeller 806, the wind wheel 8091 will also rotate, and negative pressure will be generated at the position of the wind wheel 8091, so that air flow guidance is generated in the shot blasting machine body, so that the shot blasting machine The heat generated in the body enters the shot blasting machine 8 with the air flow, and cooperates with the air interface 8021 set on the top of the shot blasting machine 8 to guide the air flow containing the heat. The wind wheel 8091 in the shot blasting machine 8 continuously rotates, and the air flow guidance can be synchronously maintained, so that the air flow containing the heat can be continuously guided out, thereby avoiding high temperature accumulation inside the shot blasting machine body and making dust adsorbed on the surface of the steel shot with a higher temperature; secondly, due to the formation of the air flow guidance, small particles and small specific gravity dust in the shot blasting machine body can also be discharged from the shot blasting machine body with the air flow, reducing the dust content in the shot blasting machine body;

[0060] In the process of steel plate impurity removal, a large number of steel shots lose kinetic energy after colliding with the steel plate and gather at the bottom of the shot blasting machine body. The collected large number of steel shots are sent to the receiving barrel 7 through the first auger 301 and fall into the receiving barrel 7. The large number of steel shots are then sent to the material lifting unit 6 through the receiving barrel 7. The material lifting unit 6 lifts the large number of steel shots and sends them to the material separation and recovery unit 4. The clean steel shots processed by the material separation and recovery unit 4 are then sent to the feeding gallery 5. The steel shots in the feeding gallery 5 can be sent back to the shot blasting machine 8 by the feeding pipe 801, so as to realize the recycling of steel shots.

[0061] The material lifting unit 6 and the material recovery unit 4 are both prior art and will not be described in detail here;

[0062] The material lifting unit 6 is any lifting device that can grab a certain amount of steel shots and send the steel shots to the material separation and recovery unit 4;

[0063] The material separation and recovery unit 4 is a combination of any bag dust collector and a material separator, and after being processed by the material separator, the steel shot is separated from the impurities, and the separated impurities are collected under the action of the bag dust collector.

[0064] like Figures 1 to 5 As shown, the shot blasting machine body includes a plurality of shot blasting chambers 1, and the plurality of shot blasting chambers 1 are fixedly connected end to end;

[0065] It also includes a receiving frame 103 fixedly connected to the ends of the shot blasting chamber 1 at both ends; it also includes a roller fixing frame 104 fixedly connected to the ends of the receiving frame 103;

[0066] It also includes a mesh conveyor belt 2 that passes through the plurality of shot blasting chambers 1, and both ends of the mesh conveyor belt 2 are fixedly connected to a roller fixing frame 104 via rollers;

[0067] It also includes a door 101 fixedly connected to the ends of the shot blasting chamber 1 at both ends, and a brush 102 fixedly connected to the bottom of the door 101, which is used to clean the oil stain on the surface of the steel plate;

[0068] It also includes a support leg 105, which is fixed to the bottom of the shot blasting chamber 1 for support.

[0069] Since there may be impurities such as oil on the surface of the steel plate after processing and forming, when the steel plate without oil treatment is directly sent into the shot blasting machine body, the steel ball hits the surface of the steel plate, which may be contaminated with oil, and then more easily contaminated with dust. As an embodiment of the present invention, the shot blasting machine body in the present invention is composed of a plurality of shot blasting chambers 1. When removing impurities from the surface of the steel plate, the steel plate is released on the surface of the mesh conveyor belt 2, and the mesh conveyor belt 2 drives the steel plate to move from one end of the shot blasting machine body to the other end. When the steel plate moves to the inside of the shot blasting machine body, the shot blasting machine 8 is started, and the high-speed steel shots output by the shot blasting machine 8 hit the steel plate, so as to achieve the effect of removing impurities from the surface of the steel plate;

[0070] Among them, before the steel plate impurity removal process, specifically when the steel plate enters the shot blasting chamber 1, it will also contact the bristles 102 at the bottom of the chamber door 101. The bristles 102 are soaked with alkali solution, which can clean and decompose the oil stains on the surface of the steel plate when contacting the steel plate, so as to clean the oil stains on the surface of the steel plate. When the steel plate is transported to the bottom of the shot blasting machine 8, due to the airflow guide in the shot blasting machine body, the wet steel plate surface can be air-dried;

[0071] When the steel shot is ejected at high speed and hits the cleaned steel plate surface, the oil stain has been removed, so the surface of the steel ball will not be stained with oil, so dust will not easily stick to the steel ball.

[0072] like Figures 1 to 3 As shown, a guide plate 106 is fixedly connected to the body of the shot blasting machine, and two guide plates 106 are provided, symmetrically arranged in two separated shot blasting chambers 1; the guide plates 106 are used to guide the steel shots with reduced kinetic energy.

[0073] In order to prevent the steel balls from flying after hitting the steel plate, resulting in a large workload for recovering the steel balls later, in one embodiment of the present invention, a guide plate 106 is provided to guide the steel balls that fly after hitting the steel plate, so that the steel balls with reduced kinetic energy can be collected at the bottom of the shot blasting chamber 1 in the middle, and the collected steel balls can be delivered to the receiving barrel 7 through the rotation of the first auger 301;

[0074] Among them, a cooling grid is also arranged at the bottom of the shot blasting chamber 1 in the middle, and there is a large gap between it and the first auger 301, which can cool the steel shots gathered at the bottom of the middle shot blasting chamber 1 to a certain extent, and cooperate with the directional air flow guidance to reduce the temperature inside the shot blasting machine body, so as to avoid dust adhering to the surface of the steel balls due to excessive temperature, thereby affecting the later separation of the steel balls and impurities.

[0075] like Figures 6 to 10 As shown, the shot blaster 8 includes a top guard plate 802, a side guard plate 803, and an end guard plate 804; two side guard plates 803 and two end guard plates 804 are provided, and the two side guard plates 803 are respectively fixed to the edges of the two end guard plates 804; the top guard plate 802 is embedded in and connected to the top of the combination of the side guard plates 803 and the end guard plates 804; the air interface 8021 is connected to the middle part of the top guard plate 802; the impeller 806 is arranged inside the combination of the side guard plates 803 and the end guard plates 804.

[0076] As an embodiment of the present invention, the shot blasting machine 8 belongs to the prior art and will not be described in detail here; the air interface 8021 is set on the top guard plate 802, and when an air flow guide is formed inside the shot blasting machine body, the air flow enters from the bottom of the side guard plate 803 and the end guard plate 804 combination, and then is discharged through the air interface 8021.

[0077] like Figures 6 to 10 As shown, the shot blasting machine 8 also includes a directional sleeve 805, a shot dividing wheel 807 and a coupling 808;

[0078] The directional sleeve 805 is inserted in the middle of the impeller 806, and the pellet-distributing wheel 807 is inserted in the directional sleeve 805; the impeller 806, the directional sleeve 805 and the pellet-distributing wheel 807 are coaxial;

[0079] The directional sleeve 805 is connected to the feeding pipe 801;

[0080] The pelletizing wheel 807 is plug-fitted with the coupling 808 , and the coupling 808 is fixedly connected to the end of the impeller 806 .

[0081] As an embodiment of the present invention, when the shot blaster 8 is working, the high-pressure gas is used to drive the steel balls into the directional sleeve 805, and then the directional sleeve 805 continuously leaks out some of the steel balls. Since the impeller 806 is connected to the external drive motor (not shown in the figure) by the coupling 808, when the impeller 806 rotates at a high speed, it can also synchronously drive the shot-distributing wheel 807 to rotate. Since a plurality of waist-shaped grooves are provided on the surface of the shot-distributing wheel 807, after some of the steel balls leak out of the directional sleeve 805, they can be dispersed into the gap of the impeller 806 through the waist-shaped grooves; when the impeller 806 rotates at a high speed, a large centrifugal force will be generated. Under the action of the centrifugal force, the steel balls dispersed into the gap of the impeller 806 can be carried to rotate, and the steel balls can be ejected at a high speed after one rotation;

[0082] Among them, a through groove is opened on the surface of the directional sleeve 805, and the through groove is facing downward, which can discharge the steel balls in a directional manner, and disperse the steel balls into the gap of the impeller 806 through the shot wheel 807. The impeller 806 rotates clockwise, and when the steel balls are in the gap of the impeller 806, they will not be discharged prematurely due to the centrifugal force and gravity. After the impeller 806 rotates one circle, they will be ejected at high speed towards the surface of the steel plate.

[0083] like Figures 6 to 10 As shown, the baffle 809 divides the shot blaster 8 into a first chamber and a second chamber; the impeller 806 is arranged in the first chamber, and the wind wheel 8091 is arranged in the second chamber; the second chamber is connected to the air interface 8021.

[0084] In one embodiment of the present invention, the baffle 809 is used to separate the shot blasting machine 8 into a first chamber and a second chamber, so that the wind wheel 8091 and the impeller 806 are respectively located on both sides of the baffle 809. When the impeller 806 rotates, the wind wheel 8091 will also rotate synchronously. When the wind wheel 8091 rotates, its position can generate negative pressure and form an air flow guide from the inside of the shot blasting machine body to the second chamber and then to the air interface 8021. That is, when the impeller rotates to output high-speed steel balls, the high-temperature dust-containing airflow in the shot blasting machine body will be discharged from the shot blasting machine body through the second chamber and the air interface 8021, thereby achieving the effect of cooling the inside of the shot blasting machine body, avoiding high temperature from aggravating dust adhesion to the surface of the steel balls and affecting the recycling of the steel balls.

[0085] like Figures 1 to 3 , Figure 11 to Figure 12 As shown, the end of the receiving barrel 7 is rotatably connected to a second motor 706, and the output end of the second motor 706 is fixedly connected to a second auger 705; the second auger 705 is arranged in the receiving barrel 7, and is used to send the steel balls falling into the receiving barrel 7 into the material lifting unit 6;

[0086] The first motor 3 is fixedly connected to the end of the first auger 301 , and the first auger 301 is driven by the first motor 3 .

[0087] As an embodiment of the present invention, after the shot blasting machine 8 is started, a large number of steel balls that have lost kinetic energy are gathered at the bottom of the shot blasting chamber 1. At this time, the first auger 301 is driven by the first motor 3 to rotate, so that the cooled steel balls can be sequentially sent into the receiving barrel 7. When a large number of steel balls fall into the receiving barrel 7, the second motor 706 is used to drive the second auger 705 to rotate, so that a large number of steel balls in the receiving barrel 7 can be sent to the material lifting unit 6. After the steel balls and impurities are separated by the material separation and recovery unit 4, the clean steel balls are sent to the feeding corridor 5, and are ejected at high speed through the feeding pipe 801 and the shot blasting machine 8. After colliding with the steel plate, they are gathered at the bottom of the shot blasting chamber 1, thereby realizing the recycling of the steel balls.

[0088] like Figure 1 , Figure 11 to Figure 12 As shown, a connecting groove 109 is provided at the connection between the receiving barrel 7 and the shot blasting chamber 1 ; a plurality of straight rods 702 are fixedly connected to the bottom of the receiving barrel 7 just opposite to the connecting groove 109 , and a filter screen plate 701 is slidably connected to the straight rods 702 .

[0089] Since the steel balls after cooling are still mixed with a large amount of impurities, specifically welding waste on the surface of the steel plate or large particles and dust with a large specific gravity, in order to improve the recovery efficiency of the material separation and recovery unit 4, in one embodiment of the present invention, when the mixture of steel balls and impurities falls into the receiving barrel 7 from the shot blasting chamber 1, the mixture of steel balls and impurities will first fall on the surface of the filter mesh plate 701, and a preliminary separation will be achieved on the surface of the filter mesh plate 701.

[0090] like Figure 11 to Figure 12 As shown, a slope block 707 is fixedly connected to the bottom of the receiving barrel 7 , and the slope block 707 is parallel to the filter screen plate 701 ; the end of the first auger 301 passes through the slope block 707 .

[0091] In one embodiment of the present invention, in order to better achieve preliminary filtration of steel balls, a first cavity and a second cavity are set in the receiving barrel 7. The first cavity is used to collect impurities, and the second cavity is used to collect steel balls and larger particle impurities after preliminary filtration; specifically, the first cavity and the second cavity are separated by the filter screen plate 701 and the slope block 707. When the filter screen plate 701 moves downward, one end thereof can overlap the top of the slope block 707, and there is a large gap with the inner wall of the receiving barrel 7. At this time, the steel balls on the surface of the filter screen plate 701 can fall into the second cavity, and when the filter screen plate 701 moves upward, the gap between the edge of the filter screen plate 701 and the inner wall of the receiving barrel 7 is only for the filter screen plate 701 to slide, and the steel balls cannot leak out from the gap between the filter screen plate 701 and the inner wall of the receiving barrel 7.

[0092] like Figure 11 to Figure 12 As shown, a spring 703 is sleeved on the straight rod 702; the two ends of the spring 703 are respectively fixed to the bottom of the receiving barrel 7 and the bottom surface of the filter screen plate 701; a vertical rod 704 is fixed to the surface of the filter screen plate 701, and the vertical rod 704 is slidably matched with the first auger 301.

[0093] In order to achieve the preliminary separation of the mixture of steel balls and impurities and reduce the separation and recovery pressure of the material distribution and recovery unit 4, in one embodiment of the present invention, after the first auger 301 rotates continuously, a large amount of steel balls and impurity mixtures are sent to the filter screen plate 701, and the steel balls and impurity mixtures are initially filtered and separated through the filter screen plate 701. At the same time, since the vertical rod 704 slides with the first auger 301, when the first auger 301 rotates, it can overcome the elastic potential energy of the spring 703 and squeeze the vertical rod 704 to move downward (when the first auger 301 does not squeeze the vertical rod 704, the spring 703 can push the filter screen plate 701 and the steel balls on the filter screen plate 701 to move upward), so that one end of the filter screen plate 701 is connected to the second cavity, and the steel balls that have been initially filtered on the surface of the filter screen plate 701 can now be merged into the second cavity, and then the steel balls that have been initially filtered are sent to the material lifting unit 6 through the second auger 705;

[0094] Among them, with the rotation of the first auger 301 and the elastic potential energy of the spring 703, the filter plate 701 can move up and down, thereby also realizing the vibration of the filter plate 701, accelerating the separation of dust and steel balls, and the dust is collected in the first cavity through the filter plate 701.

[0095] Working principle: In the prior art, during the use of the shot blasting machine, for the impurity removal process of the steel plate, when the shot blasting machine 8 outputs a large number of steel shots at high speed and hits the surface of the steel plate, the welding waste on the surface of the steel plate is removed due to the high-speed impact of the steel shots, and a large number of uneven pits are formed on the surface of the steel plate, which is beneficial to the adhesion of the steel plate in the later coating process. However, when the steel shots hit the surface of the steel plate at high speed, the kinetic energy of the steel shots will be converted into the thermal energy of the steel plate and the steel shots due to energy conversion, that is, the steel plate and the steel shots will generate a large amount of heat. At the same time, due to the presence of welding waste and dust on the surface of the steel plate, when the heat accumulates inside the shot blasting machine, the dust may adhere to the surface of the steel shots under the action of high temperature, resulting in the difficulty of removing the agglomerated impurities on the surface of the steel shots in the later stage of steel shot recovery, affecting the recycling of the steel shots;

[0096] As an embodiment of the present invention, when the shot blasting machine in the present invention is used, after the shot blasting machine 8 is started, an external driving motor (not shown in the figure) will drive the impeller 806 to rotate, and the impeller 806 rotates to cooperate with the feeding pipe 801 to continuously feed steel shots, which will eject the steel shots at high speed and hit the surface of the steel plate to achieve the effect of removing impurities. At the same time, when the shot blasting machine 8 continues to output steel shots, since the wind wheel 8091 is coaxial with the impeller 806, the wind wheel 8091 will also rotate, and negative pressure will be generated at the position of the wind wheel 8091, so that air flow guidance is generated in the shot blasting machine body, so that the shot blasting machine The heat generated in the body enters the shot blasting machine 8 with the air flow, and cooperates with the air interface 8021 set on the top of the shot blasting machine 8 to guide the air flow containing the heat. The wind wheel 8091 in the shot blasting machine 8 continuously rotates, and the air flow guidance can be synchronously maintained, so that the air flow containing the heat can be continuously guided out, thereby avoiding high temperature accumulation inside the shot blasting machine body and making dust adsorbed on the surface of the steel shot with a higher temperature; secondly, due to the formation of the air flow guidance, small particles and small specific gravity dust in the shot blasting machine body can also be discharged from the shot blasting machine body with the air flow, reducing the dust content in the shot blasting machine body;

[0097] In the process of steel plate impurity removal, a large number of steel shots lose kinetic energy after colliding with the steel plate and gather at the bottom of the shot blasting machine body. The collected large number of steel shots are sent to the receiving barrel 7 through the first auger 301 and fall into the receiving barrel 7. The large number of steel shots are then sent to the material lifting unit 6 through the receiving barrel 7. The material lifting unit 6 lifts the large number of steel shots and sends them to the material separation and recovery unit 4. The clean steel shots processed by the material separation and recovery unit 4 are then sent to the feeding gallery 5. The steel shots in the feeding gallery 5 can be sent back to the shot blasting machine 8 by the feeding pipe 801, so as to realize the recycling of steel shots.

[0098] Among them, before the steel plate impurity removal process, specifically when the steel plate enters the shot blasting chamber 1, it will also contact the bristles 102 at the bottom of the chamber door 101. The bristles 102 are soaked with alkali solution, which can clean and decompose the oil stains on the surface of the steel plate when contacting the steel plate, so as to clean the oil stains on the surface of the steel plate. When the steel plate is transported to the bottom of the shot blasting machine 8, due to the airflow guide in the shot blasting machine body, the wet steel plate surface can be air-dried;

[0099] When the steel shot is ejected at high speed and hits the cleaned steel plate surface, the oil stain has been removed, so the surface of the steel ball will not be stained with oil, so dust will not easily stick to the steel ball.

[0100] In order to prevent the steel balls from flying after hitting the steel plate, resulting in a large workload for recovering the steel balls later, in one embodiment of the present invention, a guide plate 106 is provided to guide the steel balls that fly after hitting the steel plate, so that the steel balls with reduced kinetic energy can be collected at the bottom of the shot blasting chamber 1 in the middle, and the collected steel balls can be delivered to the receiving barrel 7 through the rotation of the first auger 301;

[0101] Among them, a cooling grid is also arranged at the bottom of the shot blasting chamber 1 in the middle (there is a large gap with the first auger 301), which can cool the steel shots gathered at the bottom of the middle shot blasting chamber 1 to a certain extent, and cooperate with the directional air flow guidance to reduce the temperature inside the shot blasting machine body, so as to avoid dust adhering to the surface of the steel balls due to excessive temperature, thereby affecting the later separation of the steel balls and impurities.

[0102] When the shot blaster 8 is working, the high-pressure gas is used to drive the steel balls into the directional sleeve 805, and then the directional sleeve 805 continuously leaks out some of the steel balls. Since the impeller 806 is connected to the external driving motor (not shown in the figure) by the coupling 808, when the impeller 806 rotates at a high speed, it can also synchronously drive the shot-distributing wheel 807 to rotate. Since a plurality of waist-shaped grooves are provided on the surface of the shot-distributing wheel 807, after some of the steel balls leak out of the directional sleeve 805, they can be dispersed into the gap of the impeller 806 through the waist-shaped grooves; when the impeller 806 rotates at a high speed, a large centrifugal force is generated. Under the action of the centrifugal force, the steel balls dispersed into the gap of the impeller 806 can be carried to rotate, and the steel balls are ejected at a high speed after one rotation;

[0103] In order to achieve the preliminary separation of the mixture of steel balls and impurities and reduce the separation and recovery pressure of the material distribution and recovery unit 4, in one embodiment of the present invention, after the first auger 301 rotates continuously, a large amount of steel balls and impurity mixtures are sent to the filter screen 701, and the steel balls and impurity mixtures are initially filtered and separated through the filter screen 701. At the same time, since the vertical rod 704 slides with the first auger 301, when the first auger 301 rotates, the elastic potential energy of the spring 703 can be overcome, and the vertical rod 704 can be squeezed to move downward, so that one end of the filter screen 701 is connected to the second cavity, and the steel balls that have been initially filtered on the surface of the filter screen 701 are now merged into the second cavity, and then the steel balls that have been initially filtered are sent to the material lifting unit 6 through the second auger 705;

[0104] Among them, with the rotation of the first auger 301 and the elastic potential energy of the spring 703, the filter plate 701 can move up and down, thereby also realizing the vibration of the filter plate 701, accelerating the separation of dust and steel balls, and the dust is collected in the first cavity through the filter plate 701.

[0105] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A self-dusting shot blasting machine, comprising: The shot blasting machine body and the first auger (301) at the bottom of the shot blasting machine body; A material receiving cylinder (7) is arranged at the bottom of the discharge end of the shot blasting machine body; A material lifting unit (6), the bottom of which is connected to a material collecting barrel (7) and is used to lift the recovered steel shots; A material separation and recovery unit (4) connected to the top of the material lifting unit (6) and used for separating steel shots from impurities; A feeding gallery (5), wherein the feeding gallery (5) is connected to a material separation and recovery unit (4); Features: It also includes a shot blasting machine (8) arranged on the shot blasting machine body; one side of the shot blasting machine (8) is connected to a feeding pipe (801), one end of the feeding pipe (801) is connected to the shot blasting machine (8), and the other end is connected to the feeding gallery (5); an impeller (806) is rotatably connected to the middle of the shot blasting machine (8); a baffle (809) is fixedly connected to the middle of the shot blasting machine (8); a wind wheel (8091) is also rotatably connected to the shot blasting machine (8); the wind wheel (8091) and the impeller (806) are respectively located on both sides of the baffle (809); and an air interface (8021) is also provided on the shot blasting machine (8); The end of the receiving barrel (7) is rotatably connected to a second motor (706), and the output end of the second motor (706) is fixedly connected to a second auger (705); the second auger (705) is arranged in the receiving barrel (7) and is used to deliver the steel balls that fall into the receiving barrel (7) into the material lifting unit (6); The end of the first auger (301) is fixedly connected to a first motor (3), and the first auger (301) is driven by the first motor (3); A connecting groove (109) is provided at the connection between the material receiving cylinder (7) and the shot blasting chamber (1); a plurality of straight rods (702) are fixedly connected to the bottom of the connecting groove (109) of the material receiving cylinder (7), and a filter screen plate (701) is slidably connected to the straight rods (702); The bottom of the material receiving cylinder (7) is also fixedly connected with a slope block (707), and the slope block (707) is parallel to the filter screen plate (701); the end of the first auger (301) passes through the slope block (707); A spring (703) is sleeved on the straight rod (702); two ends of the spring (703) are respectively fixed to the bottom of the material receiving cylinder (7) and the bottom surface of the filter screen plate (701); a vertical rod (704) is fixed to the surface of the filter screen plate (701), and the vertical rod (704) is slidably matched with the first auger (301).

2. A self-dusting shot blasting machine according to claim 1, characterized in that: The shot blasting machine body comprises a plurality of shot blasting chambers (1), and the plurality of shot blasting chambers (1) are fixedly connected end to end; It also includes a receiving frame (103) fixedly connected to the ends of the shot blasting chambers (1) at both ends; and a roller fixing frame (104) fixedly connected to the ends of the receiving frame (103); It also includes a mesh conveyor belt (2) that passes through the plurality of shot blasting chambers (1), and both ends of the mesh conveyor belt (2) are fixedly connected to a roller fixing frame (104) via rollers; It also includes doors (101) fixedly connected to the ends of the shot blasting chamber (1) at both ends, and brushes (102) fixedly connected to the bottom of the doors (101) for cleaning oil stains on the surface of the steel plate; It also includes a support foot (105), wherein the support foot (105) is fixedly connected to the bottom of the shot blasting chamber (1) for support.

3. A self-dusting shot blasting machine according to claim 2, characterized in that: A guide plate (106) is also fixedly connected to the body of the shot blasting machine, and two guide plates (106) are provided and symmetrically arranged in two separated shot blasting chambers (1); the guide plates (106) are used to guide steel shots with reduced kinetic energy.

4. A self-dusting shot blasting machine according to claim 3, characterized in that: The shot blaster (8) comprises a top guard plate (802), a side guard plate (803), and an end guard plate (804); two side guard plates (803) and two end guard plates (804) are provided, and the two side guard plates (803) are respectively fixed to the edges of the two end guard plates (804); the top guard plate (802) is embedded and connected to the top of the combination of the side guard plates (803) and the end guard plates (804); the air interface (8021) is connected to the middle of the top guard plate (802); and the impeller (806) is arranged inside the combination of the side guard plates (803) and the end guard plates (804).

5. A self-dusting shot blasting machine according to claim 4, characterized in that: The shot blasting machine (8) further comprises a directional sleeve (805), a shot dividing wheel (807) and a coupling (808); The directional sleeve (805) is inserted into the middle of the impeller (806), and the pellet-separating wheel (807) is inserted into the directional sleeve (805); the impeller (806), the directional sleeve (805) and the pellet-separating wheel (807) are coaxial; The orientation sleeve (805) is in communication with the feeding pipe (801); The pelletizing wheel (807) is plug-fitted with the coupling (808), and the coupling (808) is fixedly connected to the end of the impeller (806).

6. A self-dusting shot blasting machine according to claim 5, characterized in that: The baffle (809) divides the shot blaster (8) into a first chamber and a second chamber; the impeller (806) is arranged in the first chamber, and the wind wheel (8091) is arranged in the second chamber; the second chamber is connected to the air interface (8021).

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