Sand blasting equipment for heat exchanger machining

Abstract

The invention discloses sand blasting equipment for heat exchanger machining, and belongs to the technical field of heat exchanger machining. The sand blasting equipment comprises a main body, one side of the main body is connected with a recovery device, the top of the main body is connected with a sealing cover through a hinge, a sand blasting cavity is formed in the sealing cover, and a plurality of sand discharging openings are formed in the bottom of the sand blasting cavity; cross rods are fixedly mounted on the inner walls of the two sides of the main body, screw rods are rotationally connected into the cross rods, connecting frames are connected to the outer sides of the screw rods through threads, a sand blasting frame is connected between the connecting frames, a sand inlet is formed in the top of the sand blasting frame, and a plurality of sand blasting heads are fixedly mounted in the sand blasting frame; fixing frames are fixedly installed on the inner walls of the two sides of the body, one sides of the fixing frames are connected with pneumatic valves through the body, and telescopic frames are slidably connected into the pneumatic valves. The sand blasting device is convenient to take and place, uniform in sand blasting, convenient to operate and extremely high in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchanger processing, in particular to a sandblasting device for heat exchanger processing. Background Art

[0002] Heat exchanger, also known as heat exchanger or heat exchange equipment, is a device that transfers part of the heat of hot fluid to cold fluid to meet the specified process requirements. It is an industrial application of convective heat transfer and heat conduction. The working principle of heat exchanger is based on the principle of heat transfer in thermodynamics, and heat is exchanged through two or more fluids with different temperatures without direct mixing. Its core function is to transfer the heat of one fluid (called "hot fluid") to another fluid (called "cold fluid"), so as to achieve the purpose of heating, cooling or other processes. Heat transfer is mainly achieved through three basic methods: heat conduction, convection and radiation. In the processing and manufacturing process of heat exchanger, sandblasting is an important link, which helps to remove dirt, oxide layer, etc. on the surface of workpiece, improve the roughness of workpiece surface, and provide a good adhesion basis for subsequent surface treatment or coating. However, traditional sandblasting equipment has problems such as inconvenient workpiece handling, uneven sandblasting, and low abrasive recovery efficiency during operation, which affects the processing efficiency and quality. Therefore, it is necessary to design a sandblasting equipment for heat exchanger processing to solve these problems. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a sandblasting device for heat exchanger processing, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sandblasting device for heat exchanger processing, comprising a main body, a recovery device is connected to one side of the main body, and a sealing cover is connected to the top of the main body through a hinge, a sandblasting cavity is arranged in the sealing cover, and a plurality of sand discharge ports are opened at the bottom of the sandblasting cavity, and the bottom of the sand discharge port is connected to the recovery device through a guide cavity, cross bars are fixedly installed on the inner walls on both sides of the main body, a screw is rotatably connected in the cross bar, and a connecting frame is connected to the outer side of the screw through a thread, a sandblasting frame is connected between the connecting frames, a sand inlet is arranged on the top of the sandblasting frame, and a plurality of sandblasting heads are fixedly installed in the sandblasting frame, a sand delivery port is arranged on the top of the recovery device, a connecting pipe is fixedly installed on one side of the main body, and two ends of the connecting pipe are respectively connected to the sand inlet and the sand delivery port, fixed frames are fixedly installed on the inner walls on both sides of the main body, a pneumatic valve is connected to one side of the fixed frame through the main body, and a telescopic frame is slidably connected in the pneumatic valve.

[0005] As a preferred technical solution of the present invention, an observation window is provided on the top of the sealing cover, through which the interior can be observed, and a grab rod is fixedly installed on one side of the sealing cover, a snap-on is provided on the side of the sealing cover, and a buckle adapted to the snap-on is provided on one side of the main body, which facilitates sealing of the equipment and can achieve a good sealing effect.

[0006] As a preferred technical solution of the present invention, the bottom of the sandblasting chamber adopts an arc-shaped structure design, and the guide chamber is inclined, so that the sand and gravel are easily accumulated at the bottom of the sandblasting chamber and sent to the recovery device for recovery from the guide chamber.

[0007] As a preferred technical solution of the present invention, the screw is specifically an electric screw with a motor, which is used to control the movement of the sandblasting frame. A sealing pad is laid on the bottom of the screw, and the connecting frame is located under the screw to prevent sand and gravel from contacting the screw and affecting its service life. The top of the cross bar adopts an inclined design to prevent sand and gravel from accumulating on the top.

[0008] As a preferred technical solution of the present invention, the sandblasting frame adopts a circular structure design, and the sandblasting heads are distributed in a circular array on the inner wall of the sandblasting frame, which can evenly spray sand on various parts of the heat exchanger. A cavity is provided in the sandblasting frame, and the cavity is connected to the sand inlet and the sandblasting head.

[0009] As a preferred technical solution of the present invention, there are several fixing frames distributed in an array, which can stably support multiple heat exchangers. The top of the fixing frame adopts a triangular structure design to avoid sand and gravel accumulation on the top.

[0010] As a preferred technical solution of the present invention, a limit plate is provided on the top of the telescopic frame, which can clamp the heat exchanger to prevent it from being displaced during the sandblasting process.

[0011] Beneficial effects of the present invention: The present invention supports the heat exchanger by providing a telescopic frame to facilitate taking and placing the heat exchanger, and can also use a limit plate to position it. The telescopic frame can cooperate with a fixed frame and a pneumatic valve to extend and retract while supporting the heat exchanger, which can effectively prevent the sandblasting frame from causing obstruction to the heat exchanger while moving, and does not affect the supporting effect. The structural design of the sandblasting frame cooperates with the sandblasting head to spray sand evenly on the outside of the heat exchanger, and the support part can also be sandblasted due to the extension and retraction of the telescopic frame, which greatly improves the sandblasting efficiency. The sandblasting chamber can send the sand to a recovery device for recovery through a sand discharge port and a diversion chamber, which is easy to operate and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the 3D structure of the present invention; Figure 2It is a side structural diagram of the present invention; Figure 3 It is a top view of the structure of the present invention; Figure 4 It is a schematic diagram of the side structure of the sandblasting frame in the present invention.

[0013] In the figure: 1. main body; 2. recovery device; 3. sealing cover; 4. observation window; 5. grab bar; 6. sandblasting chamber; 7. sand discharge port; 8. diversion chamber; 9. cross bar; 10. screw; 11. connecting frame; 12. sandblasting frame; 13. sand inlet; 14. sandblasting head; 15. sand delivery port; 16. connecting pipe; 17. fixing frame; 18. pneumatic valve; 19. telescopic frame. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0015] See also Figure 1 - Figure 4A sandblasting device for heat exchanger processing comprises a main body 1, a recovery device 2 is connected to one side of the main body 1, and a sealing cover 3 is connected to the top of the main body 1 through a hinge, an observation window 4 is arranged on the top of the sealing cover 3, and the interior can be observed through the observation window 4, and a grab bar 5 is fixedly installed on one side of the sealing cover 3, a snap lock is arranged on the side of the sealing cover 3, and a buckle adapted to the snap lock is arranged on one side of the main body 1, so as to facilitate sealing of the equipment and achieve a good sealing effect, a sandblasting cavity 6 is arranged in the sealing cover 3, and a plurality of sand discharge ports 7 are opened at the bottom of the sandblasting cavity 6, and the bottom of the sand discharge port 7 is connected to the recovery cavity 6. The device 2 is connected through a guide chamber 8. The bottom of the sandblasting chamber 6 adopts an arc-shaped structure design, and the guide chamber 8 is inclined, so that the sand and gravel are accumulated at the bottom of the sandblasting chamber 6 and sent to the recovery device 2 from the guide chamber 8 for recovery. The inner walls on both sides of the main body 1 are fixedly installed with cross bars 9, and a screw 10 is rotatably connected in the cross bar 9, and a connecting frame 11 is connected to the outer side of the screw 10 through a thread. The screw 10 is specifically an electric screw with a motor, which is used to control the movement of the sandblasting frame 12. A sealing pad is laid at the bottom of the screw 10, and the connecting frame 11 is located below the screw 10 to prevent the sand and gravel from contacting the screw 10 and affecting its use. The top of the cross bar 9 is inclined to prevent gravel from accumulating on the top. A sandblasting frame 12 is connected between the connecting frames 11. A sand inlet 13 is provided on the top of the sandblasting frame 12, and a plurality of sandblasting heads 14 are fixedly installed in the sandblasting frame 12. The sandblasting frame 12 adopts a circular ring structure design, and the sandblasting heads 14 are distributed on the inner wall of the sandblasting frame 12 in a circular array, which can evenly spray gravel on various parts of the heat exchanger. A cavity is provided in the sandblasting frame 12, and the cavity is connected to the sand inlet 13 and the sandblasting head 14. A sand delivery port 15 is provided on the top of the recovery device 2, and a fixed installation is provided on one side of the main body 1. There is a connecting pipe 16, and the two ends of the connecting pipe 16 are respectively connected to the sand inlet 13 and the sand delivery port 15. The inner walls on both sides of the main body 1 are fixedly installed with fixing frames 17. There are several fixing frames 17, which are distributed in an array and can stably support multiple heat exchangers. The top of the fixing frame 17 adopts a triangular structure design to prevent gravel from accumulating on the top. One side of the fixing frame 17 is connected to a pneumatic valve 18 through the main body 1. The pneumatic valve 18 is slidably connected to a telescopic frame 19. A limiting plate is provided on the top of the telescopic frame 19 to clamp the heat exchanger to prevent it from displacement during the sandblasting process.

[0016] Working principle: When in use, the heat exchanger needs to be placed between the limit plates of the cross bar 9 in turn, supported by the cross bar 9, and then the sealing cover 3 is closed and fixed with a snap lock, so that the internal processing can be observed through the observation window 4, and the recovery device 2 is opened, and the sand is delivered to the sand inlet 13 through the sand delivery port 15 and the connecting pipe 16. The sand inlet 13 injects the sand into the cavity and then sprays it out by the sandblasting head 14. At the same time, the screw 10 rotates to control the connecting frame 11 to drive the sandblasting frame 12 to move in the sandblasting chamber 6. When the sandblasting frame 12 is about to contact the cross bar 9, the gas in the current fixed frame 17 is extracted through the pneumatic valve 18, and the telescopic frame 19 is retracted into the fixed frame 17. The remaining telescopic frames 19 continue to support, and the sand sprayed by the sandblasting head 14 contacts the heat exchanger from all directions of 360°, and the cleaned sand falls into the guide cavity 8 through the sand discharge port 7, and is sent to the recovery device 2 along the guide cavity 8.

[0017] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sandblasting device for heat exchanger processing, comprising a main body (1), characterized in that: A recovery device (2) is connected and installed on one side of the main body (1), and a sealing cover (3) is connected to the top of the main body (1) via a hinge, a sandblasting chamber (6) is provided in the sealing cover (3), and a plurality of sand discharge ports (7) are provided at the bottom of the sandblasting chamber (6), and the bottom of the sand discharge ports (7) is connected to the recovery device (2) via a guide chamber (8), cross bars (9) are fixedly installed on the inner walls of both sides of the main body (1), a screw rod (10) is rotatably connected inside the cross bar (9), and a connecting frame (11) is connected to the outer side of the screw rod (10) via a thread, and a sandblasting frame (12) is connected between the connecting frames (11). The sandblasting frame (12) is provided with a sand inlet (13) at the top, and a plurality of sandblasting heads (14) are fixedly installed in the sandblasting frame (12); the recovery device (2) is provided with a sand delivery port (15) at the top; a connecting pipe (16) is fixedly installed on one side of the main body (1), and two ends of the connecting pipe (16) are respectively connected to the sand inlet (13) and the sand delivery port (15); fixed frames (17) are fixedly installed on the inner walls of both sides of the main body (1); one side of the fixed frame (17) is connected to a pneumatic valve (18) through the main body (1); and a telescopic frame (19) is slidably connected to the inside of the pneumatic valve (18).

2. The sandblasting equipment for heat exchanger processing according to claim 1, characterized in that: The top of the sealing cover (3) is provided with an observation window (4), and a grab bar (5) is fixedly mounted on one side of the sealing cover (3). A snap lock is provided on the side of the sealing cover (3), and a buckle matched with the snap lock is provided on one side of the main body (1).

3. The sandblasting equipment for heat exchanger processing according to claim 1, characterized in that: The bottom of the sandblasting chamber (6) adopts an arc-shaped structural design, and the guide chamber (8) is arranged in an inclined manner.

4. The sandblasting equipment for heat exchanger processing according to claim 1, characterized in that: The screw rod (10) is specifically an electric screw rod with a motor, a sealing pad is laid on the bottom of the screw rod (10), and the connecting frame (11) is located below the screw rod (10), and the top of the cross rod (9) adopts an inclined design.

5. The sandblasting equipment for heat exchanger processing according to claim 1, characterized in that: The sandblasting frame (12) adopts a circular ring-shaped structural design, and the sandblasting heads (14) are distributed in a circular array on the inner wall of the sandblasting frame (12). A cavity is provided in the sandblasting frame (12), and the cavity is connected to the sand inlet (13) and the sandblasting heads (14).

6. The sandblasting equipment for heat exchanger processing according to claim 1, characterized in that: There are a plurality of fixing frames (17) distributed in an array, and the top of the fixing frames (17) adopts a triangular structure design.

7. The sandblasting equipment for heat exchanger processing according to claim 1, characterized in that: A limiting plate is arranged on the top of the telescopic frame (19).

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