A processing device for producing threaded steel

Abstract

This invention discloses a processing device for producing rebar, comprising a sandblasting chamber with an inlet and an outlet on both sides. The sandblasting chamber contains an annular sandblasting mechanism, a wire cleaning mechanism, and a dust suppression plate, with the dust suppression plate positioned above the annular sandblasting mechanism and the wire cleaning mechanism. Guide wheels are located beside the inlet and outlet, respectively, and are mounted on the sandblasting chamber. A recovery hopper is located at the bottom of the sandblasting chamber, with a dust collection plate between the sandblasting chamber and the recovery hopper. A dust separation mechanism is located inside the recovery hopper, and the bottom of the recovery hopper is connected to an air pump. The sandblasting chamber of this invention prevents dust generated during sandblasting and used abrasive from entering the air and polluting the environment. Simultaneously, the guide wheels prevent the rebar from deviating during movement. The wire cleaning mechanism cleans the surface of the sandblasted rebar, and the dust separation mechanism separates the abrasive and dust entering the recovery hopper.

Description

Technical Field

[0001] This invention relates to the field of rebar surface treatment technology, specifically to a treatment device for producing rebar. Background Technology

[0002] Rebar is the common name for hot-rolled ribbed steel bars. It is widely used in civil engineering construction such as houses, bridges, and roads. From large-scale public facilities such as highways, railways, bridges, culverts, tunnels, flood control, and dams to small-scale building foundations, beams, columns, walls, and slabs, rebar is an indispensable structural material.

[0003] Threaded steel bars are commonly used in reinforced concrete. The stripes on the surface of the threaded steel bar increase friction, allowing the threaded steel bar to interlock with the concrete, forming a unified whole. Under external forces, it will not slip or move, thus improving the overall strength of the reinforced concrete.

[0004] After the produced rebar wire rod is transported and stored by conveyor belt, its surface will oxidize. Especially in high-temperature production environments, the surface of the rebar is more likely to be covered with oxide scale and rust. At the same time, due to the harsh environment of the production workshop, the surface of the rebar often adheres to impurities, oil stains or dust, which not only affects the appearance of the wire rod itself, but also reduces the surface roughness of the rebar, making it impossible for the rebar to bond tightly with the concrete.

[0005] To ensure the effectiveness of rebar, its surface needs to be treated. When the quantity of rebar is small, existing methods involve using wire brushes and sandpaper to polish the surface. When processing large quantities of rebar, sandblasting equipment is typically used. However, the constantly moving rebar during the process can easily deviate, causing the sandblasting nozzle to misalign. Additionally, sandblasting generates a large amount of dust that pollutes the surrounding air. Furthermore, the sandblasted surface will also have abrasive dust adhering to it, requiring further cleaning. The solution is to ensure the surface of the rebar is clean while simultaneously recovering the abrasive for reuse. Summary of the Invention

[0006] The purpose of this invention is to address the problems existing in the prior art by providing a processing device for producing rebar.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A processing device for producing rebar includes a sandblasting box with an inlet and an outlet on both sides. The sandblasting box contains an annular sandblasting mechanism, a wire cleaning mechanism, and a dust suppression plate. The inlet, the annular sandblasting mechanism, the wire cleaning mechanism, and the outlet are arranged sequentially along the rebar conveying route. The dust suppression plate is located above the annular sandblasting mechanism and the wire cleaning mechanism. Guide wheels are provided on the sides of the inlet and the outlet, respectively, and are mounted on the sandblasting box. A recovery hopper is located at the bottom of the sandblasting box, and a dust collection plate is provided between the sandblasting box and the recovery hopper. A dust separation mechanism is located inside the recovery hopper, and the bottom of the recovery hopper is connected to an air pump.

[0009] The sandblasting chamber of this invention prevents dust generated during sandblasting and used abrasive from entering the air and polluting the environment. Simultaneously, the guide wheels restrict the movement path of the rebar, preventing it from deviating during movement. The wire cleaning mechanism not only cleans the surface of the sandblasted rebar but also works with the recycling hopper to collect used abrasive. The dust separation mechanism separates the abrasive and dust entering the recycling hopper, preventing dust from affecting subsequent sandblasting processes. The dust suppression plate directs the airflow of dust and used abrasive generated after sandblasting to the dust collection plate, which then guides it into the recycling hopper, preventing dust or abrasive from adhering to various corners of the sandblasting chamber and making it difficult to clean. This invention can complete sandblasting and surface cleaning of the rebar during its movement, improving the efficiency of rebar surface treatment.

[0010] Preferably, a sealing device is provided at both the inlet and the outlet, and the sealing device is also provided at the inlet and outlet of the wire cleaning mechanism. The sealing device includes a first annular housing and a set of elastic valves. The elastic valves are disposed on the first annular housing and are arranged around the axis of the first annular housing.

[0011] The sealing device is used to improve the airtightness of the sandblasting box and the wire cleaning mechanism. When the threaded steel passes through the sealing device, the threaded steel will rub against the elastic valve and push the elastic valve open. During this process, the threaded steel and the elastic valve can jointly seal the sandblasting box or the wire cleaning mechanism.

[0012] Preferably, the annular sandblasting mechanism includes a second annular housing and sandblasting nozzles. The sandblasting nozzles are arranged around the axis of the second annular housing, and the angle between adjacent sandblasting nozzles is no greater than 60°. Rotating brackets are provided on both sides of the second annular housing, and a rotating drive device is provided outside the sandblasting box. The rotating drive device is connected to the second annular housing through the rotating brackets.

[0013] The annular sandblasting mechanism performs 360° sandblasting on the surface of the rebar, ensuring that there are no dead angles in the sandblasting angle. At the same time, the annular sandblasting mechanism can adjust the sandblasting angle to process rebar with different requirements for surface roughness.

[0014] Preferably, the wire cleaning mechanism includes a sealing cylinder, an air outlet box, and an air inlet box. The sealing cylinder is provided with an air outlet box near the inlet of the annular sandblasting mechanism, and the sealing cylinder is provided with an air inlet box near the outlet of the pipe. The sealing cylinder is provided with a plurality of spiral baffles, which are spaced apart along the sealing cylinder. The spiral baffles have a channel in the center for the threaded steel to pass through, and the spiral baffles are provided with an elastic retaining ring around the inner side of the channel.

[0015] Airflow enters the sealing cylinder from the air inlet box. The spiral baffle causes the airflow to flow along a spiral path that surrounds the rebar multiple times. During this process, the airflow can carry the dust and abrasive adhering to the rebar out of the sealing cylinder. At the same time, because the spiral baffle will rub against the moving rebar, the elastic retaining ring will scrape off some of the dust and abrasive. This dust and abrasive will also be carried away by the airflow, thus cleaning the surface of the rebar.

[0016] Preferably, the top of the sandblasting box has a first air inlet and a second air inlet, and the dust suppression plate has a plurality of air inlet holes. The first air inlet is connected to the air inlet box through a pipe, and the second air inlet is positioned facing the center of the dust suppression plate.

[0017] The dust suppression plate serves to disperse the airflow. When the airflow introduced by the second air inlet is blocked by the dust suppression plate, it will be dispersed and flow into the sandblasting box from each air inlet hole of the dust suppression plate.

[0018] Preferably, the dust collection plate is inclined from all sides toward the center, and a recycling port is opened in the center of the dust collection plate. The sandblasting box is connected to the recycling hopper through the recycling port, and an exhaust port is provided at the bottom of the air outlet box, with the exhaust port facing the recycling port.

[0019] The inclined dust collection plate guides dust and abrasive into the recovery port. The exhaust box guides the dust and abrasive blown out by the wire cleaning mechanism into the recovery port through the exhaust port, preventing them from moving along the axial direction of the wire cleaning mechanism and affecting the operation of the annular sandblasting mechanism.

[0020] Preferably, a corrugated pipe is provided between the air inlet box and the sandblasting box. One end of the corrugated pipe is located on the air inlet box, and the other end is arranged around the outlet. The corrugated pipe is used to protect the cleaned threaded steel and prevent the threaded steel from being contaminated again after leaving the wire cleaning mechanism.

[0021] Preferably, the dust separation mechanism is located in the middle of the recycling hopper. The dust separation mechanism includes a cylindrical screen and a centrifugal impeller. The centrifugal impeller is located inside the cylindrical screen. The top and bottom of the cylindrical screen are respectively connected to the dust collection plate and the bottom of the recycling hopper. The centrifugal impeller is rotatably connected to the recycling hopper and the dust collection plate.

[0022] The centrifugal impeller can change the direction of airflow. When the centrifugal impeller rotates, the gas entering from the recovery port gains centrifugal force as the impeller rotates, causing the gas to be thrown out of the cylindrical screen. At this time, the airflow direction changes, and the airflow will carry dust and abrasive to impact the cylindrical screen. Since the diameter of the dust is smaller than that of the abrasive, the dust will pass through the cylindrical screen, while the abrasive will be blocked by the cylindrical screen, thus completing the separation of abrasive and dust. After the abrasive falls to the bottom of the recovery hopper, it is then sucked out by the air pump.

[0023] Preferably, the guide wheels are symmetrically arranged on both sides of the rebar conveying route. Each guide wheel includes a support, an adjusting mechanism, and a roller disposed at the bottom of the support. The roller gradually narrows from both ends to the middle. The adjusting mechanism includes a sleeve, a rocker arm, and a sliding rod. The sleeve is disposed on the sandblasting box. The sliding rod is slidably connected to the sleeve. One end of the rocker arm is hinged to the sliding rod, and the other end is hinged to the top of the support. An elastic element is sleeved on the sliding rod. The elastic element is located between the rocker arm and the sandblasting box. The side of the support closest to the sandblasting box is hinged to the sandblasting box.

[0024] The adjustment mechanism, through the cooperation of the slide rod and the swing rod, converts the up-and-down movement of the roller into the sliding of the slide rod, allowing the symmetrical guide wheels to adjust their spacing to accommodate threaded steel bars of different diameters. The elastic element presses against the slide rod, causing the slide rod to apply pressure to the threaded steel bar through the roller, thereby ensuring that the pair of guide wheels are in close contact with the threaded steel bar. At the same time, the shape of the roller restricts the threaded steel bar to the narrower middle of the roller, minimizing the offset of the threaded steel bar and preventing serious deviation.

[0025] Preferably, the bottom of the recycling hopper is provided with a discharge port, and the air pump is provided between the discharge port and the storage tank. The discharge port is connected to the air pump through a pipe, and the air pump is connected to the storage tank through a pipe.

[0026] The air pump, on the one hand, sends the abrasive back to the storage tank for recycling, and on the other hand, maintains the pressure difference between the recovery hopper and the sandblasting box, so that the gas in the sandblasting box can be continuously drawn into the recovery hopper.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] (1) The sandblasting box of the present invention can prevent dust generated during sandblasting and used abrasive from entering the air and polluting the environment. At the same time, the guide wheel can restrict the movement path of the threaded steel and prevent the threaded steel from deviating during movement. The wire cleaning mechanism not only cleans the surface of the sandblasted threaded steel, but also works with the recycling hopper to recycle the used abrasive. The dust separation mechanism can separate the abrasive and dust entering the recycling hopper to avoid dust affecting the subsequent sandblasting process.

[0029] (2) The present invention utilizes a dust suppression plate to guide the dust generated after sandblasting and the used abrasive to the dust collection plate by airflow, and then guides the dust collection plate into the recycling hopper, so as to avoid dust or abrasive adhering to various corners of the sandblasting box, making the sandblasting box difficult to clean.

[0030] (3) The present invention can complete the sandblasting and surface cleaning of the rebar during the movement of the rebar, thereby improving the efficiency of surface treatment of the rebar.

[0031] (4) The present invention utilizes an annular sandblasting mechanism to perform 360° sandblasting on the surface of the threaded steel, ensuring that there are no dead angles in the sandblasting angle. At the same time, the annular sandblasting mechanism can adjust the sandblasting angle to process threaded steel with different requirements for surface roughness. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0034] Figure 3 This is a cross-sectional view of the bellows after it has been cut open according to the present invention;

[0035] Figure 4 This is a schematic diagram of the annular sandblasting mechanism in this invention;

[0036] Figure 5 This is a schematic diagram of the wire cleaning mechanism of the present invention after the sealing cylinder has been cut open;

[0037] Figure 6 This is a cross-sectional view of the air outlet box of the present invention;

[0038] Figure 7 for Figure 2 A magnified view of a section at point A in the middle;

[0039] Figure 8 This is a schematic diagram of the roller and support structure of the guide wheel in this invention;

[0040] Figure 9 This is a schematic diagram of the sealing device in this invention;

[0041] Figure 10This is a schematic diagram of the centrifugal impeller in this invention;

[0042] In the diagram: 1. Sandblasting box; 101. Inlet; 102. Outlet; 103. First air inlet; 104. Second air inlet; 2. Annular sandblasting mechanism; 201. Sandblasting nozzle; 202. Stepper motor; 3. Wire cleaning mechanism; 301. Sealing cylinder; 302. Air inlet box; 303. Air outlet box; 304. Exhaust port; 305. Strip air duct; 306. Spiral baffle; 4. Dust suppression plate; 5. Sandblasting device; 6. Guide wheel; 601. Sleeve; 602. Swing rod; 603. Slide rod; 604. Elastic element; 605. Roller; 7. Recycling hopper; 8. Dust collection plate; 9. Dust separation mechanism; 901. Centrifugal impeller; 902. Blade; 10. Air pump; 11. Threaded steel conveying route; 12. Corrugated pipe; 13. Sealing device. Detailed Implementation

[0043] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] like Figures 1-10 As shown, the specific scheme of the embodiment is as follows: A processing device for producing rebar includes a sandblasting box 1. The sandblasting box 1 has an inlet 101 and an outlet 102 on both sides. The sandblasting box 1 is equipped with an annular sandblasting mechanism 2, a wire cleaning mechanism 3 and a dust suppression plate 4. The inlet 101, the annular sandblasting mechanism 2, the wire cleaning mechanism 3 and the outlet 102 are arranged sequentially along the rebar conveying route 11. The sandblasting device 5 uses compressed air as power to send abrasive into the annular sandblasting mechanism 2. The dust suppression plate 4 is located above the annular sandblasting mechanism 2 and the wire cleaning mechanism 3. The inlet 101 and the outlet 102 are respectively provided with guide wheels 6 on the sides. The guide wheels 6 are arranged in pairs and are located inside the sandblasting box 1. The bottom of the sandblasting box 1 is provided with a recycling hopper 7. A dust collection plate 8 is provided between the sandblasting box 1 and the recycling hopper 7. The recycling hopper 7 is equipped with a dust separation mechanism 9. The bottom of the recycling hopper 7 is connected to an air pump 10.

[0046] Specifically, a sealing device 13 is provided at both the inlet 101 and the outlet 102. The inlet and outlet of the wire cleaning mechanism 3 are also provided with sealing devices 13. The sealing device 13 includes a first annular housing and a set of elastic valves. The elastic valves are made of rubber and are arranged on the first annular housing. The elastic valves are arranged around the axis of the first annular housing.

[0047] Specifically, the annular sandblasting mechanism 2 includes a second annular housing and sandblasting nozzles 201. The sandblasting nozzles 201 are arranged around the axis of the second annular housing, and the interval angle between adjacent sandblasting nozzles 201 is 60°. Rotating brackets are provided on both sides of the second annular housing. A rotary drive device is provided outside the sandblasting box 1. The rotating brackets include a hanging rod and a rotating rod, which are rotatably connected. The rotating rod is suspended inside the sandblasting box 1 by the hanging rod. One end of the rotating rod is connected to the second annular housing, and the other end extends out of the sandblasting box 1 and is connected to the rotary drive device. The rotary drive device adopts a stepper motor 202, which is used to drive the rotating rod to rotate, and the rotating rod drives the annular sandblasting mechanism 2 to rotate.

[0048] Specifically, the distance between the sandblasting nozzle 201 and the surface of the threaded steel is in the range of 30 to 70 mm, and the inclination angle between the sandblasting nozzle 201 and the axis of the threaded steel is in the range of 30 to 70°.

[0049] Specifically, the wire cleaning mechanism 3 is suspended inside the sandblasting box 1 by a support bracket. The wire cleaning mechanism 3 includes a sealing cylinder 301, an air outlet box 303, and an air inlet box 302. The air outlet box 303 is located near the inlet of the annular sandblasting mechanism 2 on the sealing cylinder 301, and the air inlet box 302 is located near the outlet of the sealing cylinder 301 near the outlet port 102. The rebar moves from the inlet to the outlet of the sealing cylinder 301. Both the air outlet box 303 and the air inlet box 302 are annular, and the inner rings of the air outlet box 303 and the air inlet box 302 are provided with several strip-shaped air ducts. 305, to facilitate gas entry and exit, the gas outlet box 303 and the gas inlet box 302 are provided with a sealing device 13 on the side away from the sealing cylinder 301; the sealing cylinder 301 is provided with a number of spiral baffles 306, which are spaced apart along the sealing cylinder 301, and the center of the spiral baffles 306 has a channel for the threaded steel to pass through. The inner side of the spiral baffles 306 surrounding the channel is provided with an elastic retaining ring, which is made of rubber; the wire cleaning mechanism 3 prevents the airflow from entering the gas inlet box 302 and immediately flowing out of the sealing cylinder 301 through the sealing device 13.

[0050] Specifically, the top of the sandblasting box 1 has a first air inlet 103 and a second air inlet 104. The first air inlet 103 and the second air inlet 104 are connected to the blower through pipes. The dust suppression plate 4 is provided with several air inlets. The first air inlet 103 is connected to the air inlet box 302 through pipes, and the second air inlet 104 is set towards the center of the dust suppression plate 4.

[0051] Specifically, the dust collection plate 8 is inclined from all sides towards the center, and a recovery port is opened in the center of the dust collection plate 8. The sandblasting box 1 is connected to the recovery hopper 7 through the recovery port. The bottom of the air outlet box 303 is provided with an exhaust port 304, which faces the recovery port. Since the air inlet box 302 is connected to the blower, the blower increases the air pressure inside the air inlet box 302, while the dust separation mechanism 9 and the air pump 10 reduce the air pressure inside the recovery hopper 7 by drawing out the gas. Therefore, after the airflow enters from the air inlet box 302, it flows from the high-pressure area to the low-pressure area. During the flow, it passes through the threaded steel multiple times and rubs against the dust and abrasive. After multiple frictions, the dust and loosely adhered abrasive fall off the threaded steel and are finally carried out of the air outlet box 303 by the airflow.

[0052] Specifically, a corrugated pipe 12 is provided between the air intake box 302 and the sandblasting box 1. One end of the corrugated pipe 12 is located on the air intake box 302, and the other end is arranged around the outlet 102.

[0053] Specifically, a cross-shaped support is installed at the recycling port, and the dust separation mechanism 9 is located in the middle of the recycling hopper 7. The dust separation mechanism 9 includes a cylindrical screen and a centrifugal impeller 901. The centrifugal impeller 901 is located inside the cylindrical screen. The top and bottom of the cylindrical screen are connected to the dust collection plate 8 and the bottom of the recycling hopper 7, respectively. The shaft of the centrifugal impeller 901 is rotatably connected to the recycling hopper 7 and the cross-shaped support through bearings. The drive motor of the dust separation mechanism 9 is located at the bottom of the recycling hopper 7 and is connected to the shaft of the centrifugal impeller 901.

[0054] Specifically, the centrifugal impeller 901 includes a top plate, a bottom plate, and blades 902. The top plate and the bottom plate are annular, and a hub is provided at the center of the top plate and the bottom plate. The top plate, the bottom plate, and the hub are connected by a support rod. The shaft is installed at the hub. Several blades 902 are provided between the top plate and the bottom plate. Adjacent blades 902 are arranged at equal intervals and are arc-shaped.

[0055] Specifically, the mesh size of the cylindrical screen is determined based on the size of the abrasive particles used, so that the abrasive cannot pass through the cylindrical screen, while the dust can pass through.

[0056] Specifically, guide wheels 6 are symmetrically arranged on both sides of the threaded steel conveying route 11. Guide wheels 6 include supports, adjustment mechanisms, and rollers 605 set at the bottom of the supports. Rollers 605 gradually narrow from both ends to the middle. The adjustment mechanism includes sleeves 601, rocker arms 602, and slide bars 603. Sleeves 601 are set on the sandblasting box 1. Slide bars 603 are slidably connected to sleeves 601. The top end of slide bars 603 is located inside the sandblasting box 1, and the bottom end is located outside the sandblasting box 1. Both the top and bottom ends of slide bars 603 are provided with limiting structures to prevent slide bars 603 from separating from sleeves 601. One end of rocker arm 602 is hinged to slide bars 603, and the other end is hinged to the top of the support. An elastic element 604 is sleeved on slide bars 603. The elastic element 604 is located between rocker arm 602 and sandblasting box 1. The elastic element 604 is a spring. The side of the support near the sandblasting box 1 is hinged to the sandblasting box 1.

[0057] Specifically, the bottom of the recycling hopper 7 is provided with a discharge port, which is located inside the cylindrical screen. The discharge port is used to discharge the collected abrasive. An air pump 10 is provided between the discharge port and the storage tank. The discharge port is connected to the air pump 10 through a pipe, and the air pump 10 is connected to the storage tank through a pipe. The storage tank is used to store abrasive for the sandblasting machine.

[0058] Specifically, the method of use of this application is as follows: the rebar enters the sandblasting box 1 through the inlet 101, the annular sandblasting mechanism 2 first sandblasts the surface of the rebar, then the rebar enters the wire cleaning mechanism 3, the wire cleaning mechanism 3 cleans the surface of the rebar, and finally the rebar leaves the sandblasting box 1 through the outlet 102; during this process, the abrasive and dust that are scattered after sandblasting will enter the dust separation mechanism 9, and the abrasive and dust cleaned by the wire cleaning mechanism 3 will also enter the dust separation mechanism 9, the dust separation mechanism 9 will separate the abrasive and dust, and finally the air pump 10 will be used to extract the separated abrasive for recycling.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A processing device for producing rebar, comprising a sandblasting chamber, characterized in that, The sandblasting box has an inlet and an outlet on each side. Inside the sandblasting box are a ring-shaped sandblasting mechanism, a wire cleaning mechanism, and a dust suppression plate. The inlet, ring-shaped sandblasting mechanism, wire cleaning mechanism, and outlet are arranged sequentially along the rebar conveying route. The dust suppression plate is located above the ring-shaped sandblasting mechanism and the wire cleaning mechanism. Guide wheels are located beside the inlet and outlet, and these guide wheels are mounted on the sandblasting box. A recovery hopper is located at the bottom of the sandblasting box, and a dust collection plate is located between the sandblasting box and the recovery hopper. A dust separation mechanism is located inside the recovery hopper, and the bottom of the recovery hopper is connected to an air pump. The wire cleaning mechanism includes a sealing cylinder and an air outlet. The sealing cylinder has an air outlet box near the inlet of the annular sandblasting mechanism and an air inlet box near the outlet of the outlet pipe. The sealing cylinder contains several spiral baffles spaced apart along its length. Each spiral baffle has a channel in its center for threaded steel to pass through, and an elastic retaining ring surrounds the inner side of the channel. The dust separation mechanism is located in the middle of the recycling hopper. The dust separation mechanism includes a cylindrical screen and a centrifugal impeller. The centrifugal impeller is located inside the cylindrical screen. The top and bottom of the cylindrical screen are connected to the dust collection plate and the bottom of the recycling hopper, respectively. The centrifugal impeller is rotatably connected to the recycling hopper and the dust collection plate.

2. The processing device for producing rebar according to claim 1, characterized in that, Both the inlet and outlet are equipped with sealing devices, and the inlet and outlet of the wire cleaning mechanism are also equipped with the sealing devices. The sealing device includes a first annular housing and a set of elastic valves. The elastic valves are disposed on the first annular housing and are arranged around the axis of the first annular housing.

3. The processing device for producing rebar according to claim 1, characterized in that, The annular sandblasting mechanism includes a second annular housing and sandblasting nozzles. The sandblasting nozzles are arranged around the axis of the second annular housing, and the angle between adjacent sandblasting nozzles is no greater than 60°. Rotating brackets are provided on both sides of the second annular housing. A rotating drive device is provided outside the sandblasting box, and the rotating drive device is connected to the second annular housing through the rotating brackets.

4. The processing apparatus for producing rebar according to claim 1, characterized in that, The top of the sandblasting box has a first air inlet and a second air inlet, and the dust suppression plate has several air inlets. The first air inlet is connected to the air inlet box through a pipe, and the second air inlet is positioned facing the center of the dust suppression plate.

5. The processing apparatus for producing rebar according to claim 1, characterized in that, The dust collection plate is inclined from all sides toward the center, and a recycling port is opened in the center of the dust collection plate. The sandblasting box is connected to the recycling hopper through the recycling port. The bottom of the air outlet box is provided with an exhaust port, which is set toward the recycling port.

6. The processing apparatus for producing rebar according to claim 1, characterized in that, A corrugated pipe is provided between the air inlet box and the sandblasting box. One end of the corrugated pipe is located on the air inlet box, and the other end is arranged around the outlet.

7. The processing apparatus for producing rebar according to claim 1, characterized in that, The guide wheels are symmetrically arranged on both sides of the rebar conveying route. Each guide wheel includes a support, an adjusting mechanism, and a roller disposed at the bottom of the support. The roller gradually narrows from both ends to the middle. The adjusting mechanism includes a sleeve, a rocker arm, and a sliding rod. The sleeve is disposed on the sandblasting box. The sliding rod is slidably connected to the sleeve. One end of the rocker arm is hinged to the sliding rod, and the other end is hinged to the top of the support. An elastic element is sleeved on the sliding rod. The elastic element is located between the rocker arm and the sandblasting box. The side of the support closest to the sandblasting box is hinged to the sandblasting box.

8. The processing apparatus for producing rebar according to claim 1, characterized in that, The bottom of the recycling hopper is provided with a discharge port, and the air pump is provided between the discharge port and the storage tank. The discharge port is connected to the air pump through a pipe, and the air pump is connected to the storage tank through a pipe.

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