Sand blasting treatment device for heat exchanger frame plate

Abstract

The invention discloses a sand blasting treatment device for a heat exchanger frame plate, and relates to the technical field of heat exchanger frame plate machining, the sand blasting treatment device comprises a sand blasting box and clamping rotating assemblies, the clamping rotating assemblies are vertically and symmetrically arranged in the sand blasting box, and the two sides of the surface of an oil liquid cylinder are connected with oil liquid conveying pipes; an oil pipe is connected to the end of the oil conveying pipe, a piston push rod clamping plate is arranged at the end of the oil pipe in a penetrating mode, and limiting telescopic rods are symmetrically arranged on the two sides of the end of the pressure rod. According to the sand blasting treatment device for the heat exchanger frame plate, the upper clamping rotating assembly and the lower clamping rotating assembly can alternately clamp the top and the bottom of the frame plate, so that the clamped parts of the frame plate are lifted and rotated while being continuously replaced, and therefore, all the parts of the surface of the frame plate can be conveniently and uniformly subjected to surface sand blasting treatment to remove impurities; due to the fact that the clamped part is continuously replaced, the problem that the clamped part is shielded and is not prone to being subjected to sand blasting treatment is solved, and subsequent secondary treatment is not needed.

Description

Technical Field

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

[0002] The heat exchanger frame plate is a frame used to hold and fix the heat exchanger. During the frame plate processing, it needs to be sandblasted, so a sandblasting device is needed. The principle of the sandblasting device is to spray abrasives (such as sand, metal beads or glass beads) onto the surface of the heat exchanger frame plate to clean it, remove oxide scale, rust, oil or other surface impurities, improve surface quality, and create good conditions for subsequent welding, coating or other processing procedures.

[0003] When sandblasting the surface of a heat exchanger frame plate, an existing sandblasting device needs to clamp the frame plate first, and then rotate the frame plate so that all parts of its surface are sandblasted. However, the clamped part of the frame plate is difficult to be sandblasted because it is shielded, so subsequent secondary clamping and sandblasting are required.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a sandblasting device for a heat exchanger frame plate is proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a sandblasting device for a frame plate of a heat exchanger, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention is implemented through the following technical scheme: a sandblasting device for a heat exchanger frame plate, comprising a sandblasting box and a clamping and rotating assembly, wherein the interior of the sandblasting box is symmetrically provided with a clamping and rotating assembly, wherein the clamping and rotating assembly comprises a hydraulic push rod, a drive motor, an oil cylinder, a carrier panel, a serrated tube, a guide groove, a pressure rod, a slider, a serrated piece, a locking tooth piece, a spring-driven piston, an oil transmission pipe, an oil pipe, a piston push rod clamp and a limiting telescopic rod, wherein a drive motor is fixed to the end of the hydraulic push rod, and an output end of the drive motor is connected to an oil cylinder, and an end of the oil cylinder A loading panel is fixed to the part, and a serrated tube is arranged inside the loading panel and the oil cylinder, a guide rail groove is opened on the inner wall of the serrated tube, and a pressure rod is passed through the inside of the serrated tube, a sliding block is fixed to the outer wall of the pressure rod, and a serrated part is connected to the end of the pressure rod, a clamping tooth part is tightly attached to the bottom of the serrated part, and a spring transmission piston is rotatably connected to the side of the clamping tooth part away from the serrated part, oil transmission pipes are connected to the two sides of the surface of the oil cylinder, and the ends of the oil transmission pipes are connected to oil pipes, piston push rod clamps are passed through the ends of the oil pipes, and limited telescopic rods are symmetrically arranged on both sides of the ends of the pressure rod.

[0007] Furthermore, the sliding block is located inside the guide rail groove, and the engaging toothed member is also located inside the guide rail groove.

[0008] Furthermore, the spring transmission piston is inserted into the oil cylinder, and the oil cylinder is connected to the oil pipe through the oil transmission pipe.

[0009] Furthermore, the oil pipes are fixed to the surface of the loading panel, and the oil pipes are symmetrically distributed about the central axis of the loading panel.

[0010] Furthermore, the limiting telescopic rod is embedded in the surface of the loading panel, and the surface of the limiting telescopic rod and the clamping plate portion of the piston push rod are not at the same height.

[0011] Furthermore, the end of the rack portion of the engaging toothed member is meshed with the end of the sawtooth member, and the outer diameter of the sawtooth member is matched with the inner diameter of the sawtooth tube.

[0012] Furthermore, the rack portion of the engaging toothed member is arranged one-to-one with the guide rail groove, and the thickness of the rack portion of the engaging toothed member is greater than the depth of the guide rail groove.

[0013] Furthermore, a box door is hinged on the middle surface of the sandblasting box, and a material conveying pipe is fixed on the outer wall of the sandblasting box.

[0014] Furthermore, a sandblasting head is fixed at the middle of the inner wall of the sandblasting box, and there are three sandblasting heads in total and distributed in a ring shape.

[0015] Furthermore, a material receiving hopper is provided at the bottom of the sandblasting box, and a material delivery pump is connected to the outer wall of the material receiving hopper.

[0016] The present invention provides a sandblasting device for a heat exchanger frame plate, which has the following beneficial effects: 1. The sandblasting device for the heat exchanger frame plate has two sets of upper and lower clamping and rotating components that can clamp the top and bottom of the frame plate in turn, so that the clamped parts of the frame plate are constantly replaced while being lifted and rotated, thereby facilitating uniform surface sandblasting of all parts of the surface to remove impurities. Since the clamped parts are constantly replaced to solve the problem that the clamped parts are shielded and difficult to accept sandblasting, there is no need for subsequent secondary treatment.

[0017] 2. The sandblasting device for the frame plate of the heat exchanger is as follows: after the frame plate is placed in the sandblasting box and clamped, the box door is closed; during the lifting, rotation and alternate clamping of the frame plate, abrasives are transported to each sandblasting head through the feed pipe; the abrasives are sprayed from the sandblasting head toward the surface of the moving frame plate to perform surface sandblasting; since the abrasives are restricted inside the sandblasting box, the abrasives can be prevented from diffusing due to the spraying; and after the abrasives fall due to gravity, they will gather inside the receiving hopper; later, the abrasives inside the receiving hopper can be extracted by the feed pump and re-sent to the feed pipe to realize the recovery and recycling of the abrasives. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the external structure of a sandblasting box of a sandblasting treatment device for a heat exchanger frame plate of the present invention; Figure 2 A schematic diagram of the internal structure of a sandblasting box of a sandblasting treatment device for a heat exchanger frame plate of the present invention; Figure 3 A schematic diagram of the structure of a hydraulic push rod of a sandblasting treatment device for a heat exchanger frame plate according to the present invention; Figure 4 A schematic diagram of a sawtooth tube structure of a sandblasting treatment device for a heat exchanger frame plate of the present invention; Figure 5 The present invention is a schematic diagram of the sawtooth structure of a sandblasting device for a heat exchanger frame plate.

[0019] In the figure: 1. Sandblasting box; 2. Clamping and rotating assembly; 201. Hydraulic push rod; 202. Driving motor; 203. Oil cylinder; 204. Loading panel; 205. Sawtooth tube; 206. Guide rail groove; 207. Pressure rod; 208. Sliding block; 209. Sawtooth piece; 210. Engaging tooth piece; 211. Spring-driven piston; 212. Oil transmission pipe; 213. Oil pipe; 214. Piston push rod clamp; 215. Limit telescopic rod; 3. Feed pipe; 4. Sandblasting head. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1-Figure 5As shown, the present invention provides a technical solution: a sandblasting device for a heat exchanger frame plate, comprising a sandblasting box 1 and a clamping rotating assembly 2, wherein the sandblasting box 1 is symmetrically provided with a clamping rotating assembly 2, wherein the clamping rotating assembly 2 comprises a hydraulic push rod 201, a driving motor 202, an oil cylinder 203, a loading panel 204, a sawtooth tube 205, a guide groove 206, a pressure rod 207, a slider 208, a sawtooth piece 209, a clamping tooth piece 210, a spring transmission piston 211, an oil transmission pipe 212, an oil pipe 213, a piston push rod clamping plate 214 and a limit telescopic rod 215, wherein the hydraulic push rod 201 A driving motor 202 is fixed to the end of the driving motor 202, and an oil cylinder 203 is connected to the output end of the driving motor 202, a loading panel 204 is fixed to the end of the oil cylinder 203, and a sawtooth tube 205 is arranged inside the loading panel 204 and the oil cylinder 203, a guide groove 206 is opened on the inner wall of the sawtooth tube 205, and a pressure rod 207 is passed through the inner wall of the sawtooth tube 205, a slider 208 is fixed to the outer wall of the pressure rod 207, and a sawtooth piece 209 is connected to the end of the pressure rod 207, and a clamping tooth piece 210 is tightly attached to the bottom of the sawtooth piece 209, and the clamping tooth piece 210 is away from the side of the sawtooth piece 209. A spring transmission piston 211 is rotatably connected, and oil transmission pipes 212 are connected to the two sides of the surface of the oil cylinder 203, and the ends of the oil transmission pipes 212 are connected to the oil pipes 213, and the ends of the oil pipes 213 are penetrated with piston push rod clamps 214, and limited telescopic rods 215 are symmetrically arranged on both sides of the ends of the pressure rod 207, the slider 208 is located inside the guide groove 206, and the engaging gear 210 is also located inside the guide groove 206, the spring transmission piston 211 is penetrated inside the oil cylinder 203, and the oil cylinder 203 is connected to the oil pipe 213 through the oil transmission pipe 212, and the oil pipe 213 is fixed to The surface of the loading panel 204 and the oil pipes 213 are symmetrically distributed about the central axis of the loading panel 204, the limiting telescopic rod 215 is embedded in the surface of the loading panel 204, and the surface of the limiting telescopic rod 215 is not at the same height as the clamping plate part of the piston push rod clamping plate 214, the end of the rack part of the engaging toothed member 210 is meshed with the end of the sawtooth member 209, and the outer diameter of the sawtooth member 209 is adapted to the inner diameter of the sawtooth tube 205, the rack part of the engaging toothed member 210 is one-to-one arranged with the guide groove 206, and the thickness of the rack part of the engaging toothed member 210 is greater than the depth of the guide groove 206; The specific operation is as follows: first, put the heat exchanger frame plate that needs to be sandblasted on the surface into the sandblasting box 1, so that the bottom of the frame plate contacts the top of the pressure rod 207 located at the lower position in the box and manually apply pressure, so that the pressure rod 207 and the limit telescopic rod 215 are affected by the pressure and fall down. At this time, the pressure rod 207 and the sawtooth member 209 push down the engaging tooth member 210 and slide down along the inside of the sawtooth tube 205 through the slider 208 until the rack part of the engaging tooth member 210 leaves the guide groove 206, and then slides down through the subsequent During the process, the engaging toothed member 210 is deflected by a certain angle under the downward push of the sawtooth member 209, so that the rack portion of the engaging toothed member 210 is misaligned with the guide groove 206, and then the pressure is manually released, and the spring transmission piston 211 rebounds upward under the action of the spring, so that the engaging toothed member 210 is pushed up. However, since the rack portion of the engaging toothed member 210 is misaligned with the guide groove 206, the rack portion is engaged with the bottom of the sawtooth tube 205, so the spring transmission piston 211 is restricted from continuing to rebound upward and maintains this state; Since the spring transmission piston 211 rebounds upward for a distance and then gets stuck, the pressure rod 207 also rebounds upward. At this time, the limit telescopic rod 215 is energized and extended and rises until it contacts the bottom of the frame plate and maintains this state, thereby preventing the pressure rod 207 from pressing down privately; After the spring transmission piston 211 is restricted, its height is significantly reduced compared with the initial state, thereby compressing the oil in the oil cylinder 203, so that the oil enters the oil pipe 213 along the oil transmission pipe 212 to push the piston push rod clamping plate 214 to extend and clamp the bottom of the frame plate, and then the clamped frame plate is driven to rotate by the driving motor 202 to receive the sandblasting treatment; During the sandblasting process, the upper and lower hydraulic push rods 201 are extended synchronously, so that the upper clamping and rotating assembly 2 descends and contacts the top of the frame plate. At this time, under the action of pressure, the upper clamping and rotating assembly 2 repeats the above operation to clamp the top of the frame plate. At the same time, the lower limiting telescopic rod 215 feels the pressure within the preset value and contracts, so that the lower pressure rod 207 descends for the second time. At this time, the engaging toothed member 210 repeats the above operation and rotates a certain angle so that its rack part coincides with the guide rail groove 206. Then, when the two hydraulic push rods 201 are contracted synchronously, the lower pressure rod 207 loses the downward pressure and rebounds to reset, so that the lower clamping and rotating assembly 2 releases the clamping of the frame plate, so that the upper and lower groups of clamping and rotating assemblies 2 can clamp the top and bottom of the frame plate in turn, so that the clamped part of the frame plate is continuously replaced while being lifted and rotated, thereby facilitating the uniform surface sandblasting of various parts of its surface to remove impurities. Since the clamped part is continuously replaced to solve the problem that the clamped part is shielded and not easy to accept sandblasting, no subsequent secondary treatment is required.

[0022] like Figure 1-Figure 5As shown, a box door is hingedly connected to the middle surface of the sandblasting box 1, and a material delivery pipe 3 is fixed to the outer wall of the sandblasting box 1, a sandblasting head 4 is fixed to the middle of the inner wall of the sandblasting box 1, and there are three sandblasting heads 4 arranged in a ring shape, and a receiving hopper is arranged at the bottom of the sandblasting box 1, and a material delivery pump is connected to the outer wall of the receiving hopper; The specific operation is as follows: after the frame plate is placed in the sandblasting box 1 and clamped, the box door is closed, and the abrasive is transported to each sandblasting head 4 through the feed pipe 3 during the process of the frame plate being lifted, rotated and clamped in turn. The abrasive is sprayed from the sandblasting head 4 toward the surface of the moving frame plate for surface sandblasting. Since the abrasive is confined in the sandblasting box 1, it can prevent the abrasive from diffusing due to the spraying. After the abrasive falls due to gravity, it will gather in the receiving hopper. Later, the abrasive in the receiving hopper can be extracted by the feed pump and sent back to the feed pipe 3 to realize the recovery and recycling of the abrasive.

[0023] In summary, when the sandblasting device for the heat exchanger frame plate is used, the heat exchanger frame plate to be subjected to surface sandblasting is first placed in the sandblasting box 1, so that the bottom of the frame plate contacts the top of the pressure rod 207 located at the lower position in the box and pressure is applied manually, so that the pressure rod 207 and the limiting telescopic rod 215 are affected by the pressure and fall down. At this time, the pressure rod 207 and the sawtooth member 209 push down the engaging tooth member 210 and slide down along the inside of the sawtooth tube 205 through the slider 208 until the rack part of the engaging tooth member 210 leaves the guide groove 206. In the subsequent downward movement, the toothed member 210 is deflected at a certain angle by the downward push of the sawtooth member 209, so that the rack portion of the toothed member 210 is misaligned with the guide groove 206. Then, the pressure is manually released, and the spring transmission piston 211 rebounds upward under the action of the spring, so that the toothed member 210 is pushed upward. However, since the rack portion of the toothed member 210 is misaligned with the guide groove 206, the rack portion is engaged with the bottom of the sawtooth tube 205, so the spring transmission piston 211 is restricted from rebounding upward and maintaining this state. Since the spring transmission piston 211 rebounds upward for a distance and then gets stuck, the pressure rod 207 also rebounds upward. At this time, the limit telescopic rod 215 is energized and extended to rise until it contacts the bottom of the frame plate and maintains this state, thereby preventing the pressure rod 207 from pressing down privately. After the spring transmission piston 211 is restricted, its height is significantly reduced compared with the initial state, thereby compressing the oil inside the oil cylinder 203, so that the oil enters the oil pipe 213 along the oil transmission pipe 212 to push the piston push rod clamping plate 214 to extend it to clamp the bottom of the frame plate, and then the clamped frame plate is driven by the driving motor 202 to rotate to receive sandblasting treatment; During the sandblasting process, the upper and lower hydraulic push rods 201 extend synchronously, so that the upper clamping rotating assembly 2 descends to contact the top of the frame plate. At this time, under the action of pressure, the upper clamping rotating assembly 2 repeats the above operation to clamp the top of the frame plate. At the same time, the lower limit telescopic rod 215 feels the pressure within the preset value and contracts, so that the lower pressure rod 207 descends for the second time. At this time, the engaging toothed member 210 repeats the above operation and rotates a certain angle so that its rack part coincides with the guide rail groove 206. When the two hydraulic push rods 201 shrink synchronously, the lower pressure rod 207 loses the downward pressure and rebounds to reset, so that the lower clamping rotating assembly 2 releases the clamping of the frame plate, so that the upper and lower clamping rotating assemblies 2 can clamp the top and bottom of the frame plate in turn, so that the frame plate is lifted and rotated while the clamped part is continuously replaced; Abrasives are transported to each sandblasting head 4 through the feed pipe 3, and are sprayed from the sandblasting head 4 toward the surface of the moving frame plate for surface sandblasting. Since the abrasives are confined inside the sandblasting box 1, diffusion of the abrasives due to spraying can be prevented. After the abrasives fall due to gravity, they will gather inside the receiving hopper. Later, the abrasives inside the receiving hopper can be extracted by a feed pump and sent back to the feed pipe 3 to realize the recovery and recycling of the abrasives.

[0024] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A sandblasting device for a heat exchanger frame plate, comprising a sandblasting box (1) and a clamping rotating assembly (2), characterized in that: The interior of the sandblasting box (1) is symmetrically provided with a clamping and rotating assembly (2), the clamping and rotating assembly (2) comprising a hydraulic push rod (201), a driving motor (202), an oil cylinder (203), a loading panel (204), a sawtooth tube (205), a guide groove (206), a pressure rod (207), a slider (208), a sawtooth member (209), a locking tooth member (210), a spring-driven piston (211), an oil transmission tube (212), an oil tube (213), a piston push rod clamp (214) and a limiting telescopic rod (215), the driving motor (202) being fixed at the end of the hydraulic push rod (201), and the output end of the driving motor (202) being connected to the oil cylinder (203), the loading panel (204) being fixed at the end of the oil cylinder (203), and the loading panel (204) and the oil cylinder (203) being connected to the inner surface of the oil cylinder (203). A sawtooth tube (205) is provided at the bottom, a guide rail groove (206) is provided on the inner wall of the sawtooth tube (205), a pressure rod (207) is passed through the inside of the sawtooth tube (205), a slider (208) is fixed to the outer wall of the pressure rod (207), and a sawtooth piece (209) is connected to the end of the pressure rod (207), a clamping tooth piece (210) is tightly attached to the bottom of the sawtooth piece (209), and a spring transmission piston (211) is rotatably connected to the side of the clamping tooth piece (210) away from the sawtooth piece (209), oil transmission pipes (212) are connected to the two sides of the surface of the oil cylinder (203), and the end of the oil transmission pipe (212) is connected to the oil pipe (213), a piston push rod clamp (214) is passed through the end of the oil pipe (213), and limited telescopic rods (215) are symmetrically provided on both sides of the end of the pressure rod (207).

2. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: The sliding block (208) is located inside the guide rail groove (206), and the engaging toothed member (210) is also located inside the guide rail groove (206).

3. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: The spring transmission piston (211) is inserted into the oil cylinder (203), and the oil cylinder (203) is connected to the oil pipe (213) via the oil transmission pipe (212).

4. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: The oil pipes (213) are fixed to the surface of the object loading panel (204), and the oil pipes (213) are symmetrically distributed about the central axis of the object loading panel (204).

5. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: The position-limiting telescopic rod (215) is embedded in the surface of the object-carrying panel (204), and the surface of the position-limiting telescopic rod (215) and the clamping plate portion of the piston push rod clamping plate (214) are not at the same height.

6. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: The end of the rack portion of the engaging toothed member (210) meshes with the end of the sawtooth member (209), and the outer diameter of the sawtooth member (209) matches the inner diameter of the sawtooth tube (205).

7. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: The rack portion of the engaging toothed part (210) is arranged one-to-one with the guide rail groove (206), and the thickness of the rack portion of the engaging toothed part (210) is greater than the depth of the guide rail groove (206).

8. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: A box door is hingedly connected to the middle surface of the sandblasting box (1), and a material conveying pipe (3) is fixed to the outer wall of the sandblasting box (1).

9. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: A sandblasting head (4) is fixed to the middle of the inner wall of the sandblasting box (1), and a total of three sandblasting heads (4) are arranged and distributed in a ring shape.

10. The sandblasting device for a heat exchanger frame plate according to claim 1, characterized in that: A material receiving hopper is provided at the bottom of the sandblasting box (1), and a material delivery pump is connected to the outer wall of the material receiving hopper.

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