Rust removing and polishing equipment for heat exchange tube

Abstract

The invention relates to the field of derusting and polishing equipment, in particular to derusting and polishing equipment for a heat exchange tube, which comprises a polishing mechanism, the polishing mechanism comprises a machining table, a plurality of first supporting seats and a plurality of second supporting seats, the first supporting seats and the second supporting seats are arranged on the machining table, and the first supporting seats are located among the second supporting seats; two supporting rods are installed on each second supporting seat, guide wheels are installed on the two supporting rods, a connecting rod is arranged between the two guide wheels in a sliding mode, the end, close to the first supporting seat, of the connecting rod is connected with a cleaning assembly used for derusting and polishing the inner wall of the heat exchange tube, and the other end of the connecting rod is connected with a driving part; and the supporting mechanism comprises a mounting groove formed in the connecting rod, the pressing assembly and the driving assembly can drive the rolling wheel to completely enter the mounting groove, stable supporting force is provided for the connecting rod through the rolling wheel, and when the rolling wheel moves, the rolling wheel is limited by the limiting assembly and cannot enter the mounting groove.

Description

Technical Field

[0001] The invention relates to the field of rust removal and polishing equipment, in particular to rust removal and polishing equipment for heat exchange tubes. Background Art

[0002] Heat exchange tubes are one of the core components of heat exchangers. Their main function is to achieve heat transfer between two or more fluids at different temperatures. Heat exchangers are energy-saving equipment that transfers heat from a higher temperature fluid to a lower temperature fluid to achieve the temperature index specified by the process flow and meet various industrial needs.

[0003] During long-term use, the inner wall of the heat exchange tube will rust and accumulate dirt due to the corrosiveness of the medium or environmental factors, which will affect the heat exchange efficiency and equipment performance. Therefore, regular rust removal and polishing can reduce the contact between the corrosive medium and the tube wall, extend the service life of the heat exchange tube, and maintain the heat exchange efficiency.

[0004] For some ordinary small heat exchange tubes, there is no problem in directly driving the cleaning brush to enter the inside of the heat exchange tube for rust removal and polishing through the driving member and the connecting rod. However, there are some longer heat exchange tubes in the prior art, such as 9-meter and 12-meter long heat exchange tubes. The two driving members drive the two cleaning brushes to enter the inside of the heat exchange tube from both ends through two connecting rods through multiple guide wheels to remove rust and polish the inner wall of the heat exchange tube. The connecting rod here needs to be very long. As the connecting rod drives the cleaning brush to continuously enter the inside of the heat exchange tube, there is no supporting device inside the heat exchange tube, resulting in one end of the connecting rod located inside the heat exchange tube being suspended. As the end of the connecting rod connected to the cleaning brush is increasingly distant from the guide wheel close to the end of the heat exchange tube (for example, for a 9-meter heat exchange tube, the length of the suspended section needs to be at least 4.5 meters, and there will be a distance between the normal support seat and the heat exchange tube, that is, the suspended section will be longer), the lever arm becomes increasingly larger, resulting in lower and lower stability of the cleaning brush, and worse cleaning effect. In addition, the driving member needs to exert greater force on the connecting rod, increasing the risk of wear and failure of the driving member.

[0005] Therefore, a rust removal and polishing device for heat exchange tubes is proposed. Summary of the invention

[0006] In view of the fact that there is no supporting device inside the heat exchange tube in the above-mentioned or prior art, resulting in one end of the connecting rod located inside the heat exchange tube being suspended in the air, as the end of the connecting rod connected to the cleaning brush is increasingly distant from the guide wheel close to the end of the heat exchange tube, the force arm becomes increasingly larger, resulting in increasingly lower stability of the cleaning brush and increasingly poor cleaning effect, the present invention is proposed.

[0007] Therefore, an object of the present invention is to provide a rust removal and polishing device for heat exchange tubes.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising: A polishing mechanism, comprising a processing table, a plurality of first support seats and a plurality of second support seats arranged on the processing table, the plurality of first support seats being located between the plurality of second support seats, two support rods being installed on each of the second support seats, guide wheels being installed on both of the support rods, a connecting rod being slidably arranged between the two guide wheels, a cleaning assembly for rust removal and polishing of the inner wall of the heat exchange tube being connected to one end of the connecting rod close to the first support seat, and a driving member being connected to the other end of the connecting rod; The support mechanism comprises a mounting groove provided on the connecting rod, a pressing assembly and a driving assembly are arranged inside the mounting groove, a bracket body is connected to the driving assembly, a roller is installed on the bracket body, and a limiting assembly is also arranged inside the mounting groove; The side of the roller away from the bracket body is located outside the mounting groove; The pressing assembly and the driving assembly can drive the roller to completely enter the installation groove. When the roller moves, it is restricted by the limiting assembly and will not enter the installation groove.

[0009] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, the cleaning assembly includes a driving motor arranged at one end of the connecting rod close to the first supporting seat, and the output end of the driving motor is connected to a cleaning brush.

[0010] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, the pressing assembly comprises an annular support block installed inside the installation groove, the annular support block is connected to a first spring, the first spring is connected to a cap at one end away from the annular support block, and the cap is provided with a first inclined surface and a second inclined surface; One end of the cover cap away from the roller passes through the mounting groove, and the top of the cover cap is an inclined arc surface.

[0011] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, the driving assembly includes four auxiliary blocks fixedly mounted on the inner wall of the mounting groove, the four auxiliary blocks are distributed in a rectangular shape, a slider is arranged between the four auxiliary blocks, and the slider is provided with a third inclined surface and a fourth inclined surface; The slider is in a "Z" shape after being rotated 90 degrees, wherein the middle part is inclined, and the third inclined surface and the fourth inclined surface are respectively arranged on two sides of the slider away from each other, and the third inclined surface corresponds to the first inclined surface, and the fourth inclined surface corresponds to the second inclined surface.

[0012] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, wherein: the support body comprises a horizontal section and a vertical section; The driving assembly also includes an inclined slot provided on the vertical section of the bracket body; The middle of the sliding block slides through the inclined slot.

[0013] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, the limiting assembly includes a positioning groove provided on the connecting rod, a positioning block and a second spring are arranged inside the positioning groove, one end of the second spring is connected to the inner wall of the positioning groove, and the other end of the second spring is fixedly connected to the positioning block, one end of the positioning block passes through the positioning groove and is connected to a stop block, and a fifth inclined surface is arranged on the stop block; The fifth inclined surface matches the first inclined surface.

[0014] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, the positioning groove matches the positioning block.

[0015] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, the bottom of the stop block and the top of the horizontal section of the bracket body are both flat surfaces; A notch is also provided on the horizontal section of the bracket body.

[0016] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, wherein: the vertical section of the bracket body passes through the annular support block and is connected to the top plate; The size of the top plate is smaller than the inner diameter of the first spring.

[0017] As a preferred solution of the rust removal and polishing equipment for heat exchange tubes of the present invention, the stop block and the positioning block are both made of high-strength materials.

[0018] The beneficial effects of the rust removal and polishing equipment for heat exchange tubes of the present invention are as follows: The connecting rod is driven to move by the driving member, and the connecting rod drives the cleaning component to enter the interior of the heat exchange tube, and removes rust and polishes the inner wall of the heat exchange tube; When the driving member is driving the connecting rod to move, if the heat exchange tube that needs to be derusted and polished is shorter, the supporting mechanism will not be triggered. When the heat exchange tube that needs to be derusted and polished is a longer heat exchange tube such as 9 meters or 12 meters, when the connecting rod drives the cleaning assembly to enter a certain length of the heat exchange tube, the pressing assembly will contact the arc surface of the upper guide wheel, and the pressing assembly drives the roller to move into the installation groove through the driving assembly, so that the connecting rod can pass normally between the two guide wheels. When the pressing assembly does not contact the guide wheel, the pressing assembly is reset, and the pressing assembly drives the roller to reset through the driving assembly. As the connecting rod moves, the roller contacts the inner wall of the bottom of the heat exchange tube, and under the action of the limit assembly, when the pressing assembly is not running, the roller cannot move up and down in the vertical direction, that is, the roller will not enter the installation groove, and the roller supports the connecting rod, thereby increasing the stability of the cleaning brush of the cleaning assembly on the inner wall of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the rust removal and polishing equipment for heat exchange tubes; Figure 2 It is a schematic diagram of the overall structure of the rust removal and polishing equipment for heat exchange tubes; Figure 3 It is a schematic diagram of the cross-sectional structure of the support mechanism of the rust removal and polishing equipment for heat exchange tubes; Figure 4 A schematic diagram of the structure of a pressing assembly of a rust removal and polishing device for heat exchange tubes; Figure 5 A schematic diagram of the structure of a drive assembly for a rust removal and polishing device for heat exchange tubes; Figure 6 A schematic diagram of the structure of a limit assembly for a rust removal and polishing device for heat exchange tubes; In the figure: 100, polishing mechanism; 101, processing table; 102, first support seat; 103, second support seat; 104, support rod; 105, guide wheel; 106, connecting rod; 107, cleaning assembly; 107a, driving motor; 107b, cleaning brush; 200, support mechanism; 201, mounting groove; 202, pressing assembly; 202a, support block; 202b, first spring; 202c, cap; 202d, first inclined plane; 202e, second inclined plane; 203, driving assembly; 203a, auxiliary block; 203b, slider; 203c, third inclined plane; 203d, fourth inclined plane; 203e, inclined groove; 204, bracket body; 204a, notch; 204b, top plate; 205, roller; 206, limit assembly; 206a, positioning groove; 206b, positioning block; 206c, second spring; 206d, stop block; 206e, fifth inclined plane. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] Example 1, reference Figures 1 to 6, is the first embodiment of the present invention, which provides a rust removal and polishing device for heat exchange tubes, comprising, a polishing mechanism 100, which includes a processing table 101, a plurality of first support seats 102 and a plurality of second support seats 103 are arranged on the top of the processing table 101, the plurality of first support seats 102 are located between the plurality of second support seats 103, two support rods 104 are installed on each of the second support seats 103, guide wheels 105 are installed on the two support rods 104, a connecting rod 106 is slidably arranged between the two guide wheels 105, one end of the connecting rod 106 close to the first support seat 102 is connected to a cleaning assembly 107 for rust removal and polishing the inner wall of the heat exchange tube, and the other end of the connecting rod 106 is connected to a driving member; The support mechanism 200 includes a mounting groove 201 formed on the connecting rod 106, a pressing assembly 202 and a driving assembly 203 are arranged inside the mounting groove 201, a bracket body 204 is connected to the driving assembly 203, a roller 205 is installed on the bracket body 204, and a limit assembly 206 is also arranged inside the mounting groove 201; The side of the roller 205 away from the bracket body 204 is located outside the mounting groove 201; The roller 205 can be driven to completely enter the installation slot 201 by the pressing component 202 and the driving component 203. When the roller 205 moves, it is restricted by the limiting component 206 and will not enter the installation slot 201. The first support seat 102 is used for placing the heat exchange tube. The driving member is not shown in the figure. It can be driven by a cylinder. The guide wheel 105 is similar to an hourglass shape after rotating 90 degrees, and the middle part is an arc. Among them, the distance between the support mechanism 200 and the cleaning component 107 is determined according to the length of the heat exchange tube that needs to be polished and rust-removed. For example, if the length of the heat exchange tube is 9 meters, when the support mechanism 200 is not set, the maximum suspended section of the connecting rod 106 is approximately 4.5 meters in length. The distance between the support mechanism 200 and the cleaning component 107 can be 2.25 meters, so that the length of the suspended section is reduced to 2.25 meters, thereby increasing the stability of the cleaning component 107 in rust removal and polishing of the heat exchange tube. In addition, multiple support mechanisms 200 can be set, which can share the pressure that the support mechanism 200 needs to bear and increase the service life of the support mechanism 200. The distance between the support mechanism 200 and the cleaning component 107 can be smaller, that is, the smaller the suspended section, the further the stability of the cleaning component 107 in rust removal and polishing of the heat exchange tube is increased.

[0023] The connecting rod 106 is driven to move by the driving member, and the connecting rod 106 drives the cleaning assembly 107 to enter the interior of the heat exchange tube, and removes rust and polishes the inner wall of the heat exchange tube; When the driving member drives the connecting rod 106 to move, if the heat exchange tube that needs to be derusted and polished is short, the supporting mechanism 200 will not be triggered. When the heat exchange tube that needs to be derusted and polished is a longer heat exchange tube such as 9 meters or 12 meters, when the connecting rod 106 drives the cleaning component 107 to enter a certain length of the heat exchange tube, the pressing component 202 will contact the curved surface of the upper guide wheel 105, and the pressing component 202 drives the roller 205 to move into the installation groove 201 through the driving component 203, so that the connecting rod 106 can pass between the two guide wheels 105 normally. When the pressing assembly 202 is not in contact with the guide wheel 105, the pressing assembly 202 is reset, and the pressing assembly 202 drives the roller 205 to reset through the driving assembly 203. As the connecting rod 106 moves, the roller 205 contacts the inner wall of the bottom of the heat exchange tube, and under the action of the limiting assembly 206, when the pressing assembly 202 is not running, the roller 205 cannot move up and down in the vertical direction, that is, the roller 205 will not enter the inside of the installation groove 201. The roller 205 plays a supporting role for the connecting rod 106, which increases the stability of the cleaning brush 107b of the cleaning assembly 107 on the inner wall of the heat exchange tube.

[0024] Furthermore, the cleaning assembly 107 includes a driving motor 107a disposed at one end of the connecting rod 106 close to the first support seat 102, and a cleaning brush 107b is connected to the output end of the driving motor 107a. By turning on the driving motor 107a, the driving motor 107a drives the cleaning brush 107b to rotate, so that the cleaning brush 107b removes rust and polishes the inside of the heat exchange tube; The driving motor 107a can be installed outside or inside the connecting rod 106, and the cleaning brush 107b is composed of a brush and a grinding disc. The brush is used to sweep away rusted objects inside the heat exchange tube, and the grinding disc is used to polish the inside of the heat exchange tube.

[0025] In this embodiment, the connecting rod 106 is driven by the driving member to move toward the heat exchange tube, and the connecting rod 106 drives the cleaning brush 107b to enter the interior of the heat exchange tube through the driving motor 107a, and the driving motor 107a is turned on. The driving motor 107a drives the cleaning brush 107b to rotate to achieve rust removal and polishing of the heat exchange tube.

[0026] Example 2, reference Figures 1 to 6 , which is the second embodiment of the present invention. Different from the previous embodiment, the pressing assembly 202 in this embodiment includes an annular support block 202a installed inside the mounting groove 201, the annular support block 202a is connected to a first spring 202b, an end of the first spring 202b away from the annular support block 202a is connected to a cap 202c, a first inclined surface 202d and a second inclined surface 202e are provided on the cap 202c, an end of the cap 202c away from the roller 205 passes through the mounting groove 201, and the top of the cap 202c is an inclined arc surface; Among them, the first spring 202b is set to reset the cap 202c after being pressed. The top of the cap 202c is an inclined arc surface, so that when the cap 202c contacts the surface of the guide wheel 105, the cap 202c can move into the installation groove 201. The cap 202c needs to match the installation groove 201 so that the cap 202c can only move up and down in a straight line inside the installation groove 201, so as to avoid the cap 202c tilting and squeezing the first spring 202b when moving into the installation groove 201, causing damage to the first spring 202b.

[0027] Further, the driving assembly 203 includes four auxiliary blocks 203a fixedly mounted on the inner wall of the mounting groove 201, the four auxiliary blocks 203a are distributed in a rectangular shape, a slider 203b is arranged between the four auxiliary blocks 203a, a third inclined surface 203c and a fourth inclined surface 203d are arranged on the slider 203b, the slider 203b is in a "Z" shape after being rotated by 90 degrees, wherein the middle part is inclined, the third inclined surface 203c and the fourth inclined surface 203d are respectively arranged on two sides of the slider 203b away from each other, and the third inclined surface 203c corresponds to the first inclined surface 202d, and the fourth inclined surface 203d corresponds to the second inclined surface 202e; Among them, the four auxiliary blocks 203a are all rectangular, and their surfaces are flat. The upper and lower parts of the slider 203b are respectively fitted with the surfaces of two auxiliary blocks 203a. The setting of the four auxiliary blocks 203a ensures that the slider 203b can only move in a straight line in a horizontal position, which facilitates the contact between the first inclined surface 202d and the third inclined surface 203c and the contact between the second inclined surface 202e and the fourth inclined surface 203d.

[0028] Furthermore, the bracket body 204 includes a horizontal section and a vertical section, and the driving assembly 203 also includes an inclined slot 203e provided on the vertical section of the bracket body 204, and the middle of the slider 203b slides through the inclined slot 203e; When the cap 202c drives the slider 203b to move, the slider 203b cooperates with the inclined groove 203e through the inclined portion in the middle to drive the bracket body 204 to move up and down, and the bracket body 204 drives the roller 205 to move up and down.

[0029] The size of the cap 202c is larger than the size of the roller 205, ensuring that when the connecting rod 106 moves, the cap 202c will first contact the guide wheel 105 at the top of the connecting rod 106; Among them, the length of the cap 202c passing through the installation groove 201 is smaller than the length of the roller 205 passing through the installation groove 201, ensuring that when the supporting device enters the interior of the heat exchange tube, the top of the cap 202c does not contact the top inner wall of the heat exchange tube, and the roller 205 contacts the bottom inner wall of the heat exchange tube.

[0030] The rest of the structure is the same as that of Example 1.

[0031] In this embodiment, when the heat exchange tube that needs to be derusted and polished is long, the driving member drives the cleaning assembly 107 to move toward the inside of the heat exchange tube through the connecting rod 106. When the connecting rod 106 moves to the corresponding position, the cap 202c contacts the upper guide wheel 105, driving the cap 202c to move toward the inside of the installation groove 201. The cap 202c squeezes the first spring 202b, causing the first spring 202b to contract. At the same time, the first inclined surface 202d on the cap 202c contacts the third inclined surface 203c on the slider 203b, bringing The movable slider 203b moves toward the direction of the second inclined surface 202e (since the second inclined surface 202e on the cap 202c will also drop as the cap 202c drops, it will not affect the movement of the slider 203b), the slider 203b contacts the upper groove surface of the inclined groove 203e on the bracket body 204, driving the bracket body 204 to rise, and the bracket body 204 drives the roller 205 to rise, so that the cap 202c and the roller 205 both enter the interior of the installation groove 201, and at this time, the connecting rod 106 can directly pass through the upper and lower guide wheels 105; After the support mechanism 200 passes through the upper and lower guide wheels 105, under the action of the elastic force of the first spring 202b and the gravity of the roller 205 itself, the cap 202c and the roller 205 are reset, and the cap 202c passes through the installation groove 201, and the cap 202c contacts the fourth inclined surface 203d on the slider 203b through the second inclined surface 202e, driving the slider 203b to reset, and the slider 203b squeezes the lower groove wall of the inclined groove 203e on the bracket body 204 through the middle inclined section, driving the bracket body 204 to reset, and the bracket body 204 drives the roller 205 to reset, at this time, the roller 205 is in contact with the inner wall of the heat exchange tube, as the connecting rod 106 drives the cleaning component 107 to move deeper and deeper into the heat exchange tube, the roller 205 also moves accordingly, and the roller 205 always plays a supporting role for the connecting rod 106.

[0032] On the contrary, when the connecting rod 106 is reset, the changes of the supporting mechanism 200 between the upper and lower guide wheels 105 are the same as above.

[0033] Example 3, reference Figures 1 to 6, which is the third embodiment of the present invention. Different from the previous embodiment, in this embodiment, the limiting assembly 206 includes a positioning groove 206a opened on the connecting rod 106, the positioning groove 206a is connected to the mounting groove 201, and a positioning block 206b and a second spring 206c are arranged inside the positioning groove 206a, one end of the second spring 206c is connected to the inner wall of the positioning groove 206a, and the other end of the second spring 206c is fixedly connected to the positioning block 206b, one end of the positioning block 206b passes through the positioning groove 206a and is connected to a stop block 206d, and a fifth inclined surface 206e is arranged on the stop block 206d, and the fifth inclined surface 206e matches the first inclined surface 202d.

[0034] Further, the positioning groove 206a matches the positioning block 206b; Among them, the shapes of the positioning groove 206a and the positioning block 206b can be trapezoidal or other shapes that can ensure that the positioning block 206b can move horizontally and linearly inside the positioning groove 206a. By matching the positioning groove 206a with the positioning block 206b, the positioning block 206b can only move horizontally and linearly, ensuring that the fifth inclined surface 206e corresponds to the first inclined surface 202d.

[0035] Furthermore, the bottom of the stopper 206d and the top of the horizontal section of the bracket body 204 are both flat, and a notch 204a is also provided on the horizontal section of the bracket body 204; Among them, in the initial state, the bottom of the stop block 206d and the top of the horizontal section of the bracket body 204 are in a fit state. When the roller 205 wants to move upward, the roller 205 drives the bracket body 204 to move upward, and the bracket body 204 drives the stop block 206d to move upward, but under the restriction of the positioning groove 206a and the positioning block 206b, the stop block 206d cannot move upward, and thus the roller 205 cannot move upward.

[0036] Furthermore, the vertical section of the bracket body 204 passes through the annular support block 202a and is connected to a top plate 204b, and the size of the top plate 204b is smaller than the inner diameter of the first spring 202b; The vertical section of the bracket body 204 is fitted with the sides of the two auxiliary blocks 203a close to each other, ensuring that the bracket body 204 can only move vertically up and down, thereby ensuring that the top plate 204b and the roller 205 can only move vertically up and down; In the initial state, the top plate 204b is in contact with the top of the annular support plate, preventing the support body 204 from further descending.

[0037] Furthermore, the stop block 206d and the positioning block 206b are both made of high-strength material, which may be precipitation hardened steel, also known as PH stainless steel, which is an ultra-high strength steel with corrosion resistance developed on the basis of stainless steel.

[0038] The rest of the structure is the same as that of Example 2.

[0039] In this embodiment, in the initial state, there is a certain gap between the first inclined surface 202d and the third inclined surface 203c, and the fifth inclined surface 206e is in contact with the first inclined surface 202d; When the cap 202c is descending, the first inclined surface 202d on the cap 202c will not contact the third inclined surface 203c at first, that is, the bracket body 204 will not be driven to move through the slider 203b. The first inclined surface 202d on the cap 202c squeezes the fifth inclined surface 206e on the stop block 206d, so that the stop block 206d moves to one side of the second inclined surface 202e, and the stop block 206d drives the positioning block 206b to slide inside the positioning groove 206a, and makes The second spring 206c is compressed by the positioning block 206b. When the first inclined surface 202d on the cap 202c contacts the third inclined surface 203c on the slider 203b, the stop block 206d corresponds to the position of the notch 204a. The stop block 206d does not limit the rise of the bracket body 204. The cap 202c can drive the bracket body 204 to rise through the first inclined surface 202d and the slider 203b. The bracket body 204 drives the roller 205 to enter the interior of the installation groove 201. When the cap 202c is reset, the bracket body 204 will also be reset. At this time, the top plate 204b is in contact with the top of the annular support plate, so that the bracket body 204 cannot move downward. At the same time, the stop block 206d is in contact with the top of the horizontal section of the bracket body 204. Under the restriction of the positioning groove 206a, the bracket body 204 cannot move upward, so that the roller 205 can move stably inside the heat exchange tube.

[0040] In summary, based on the second embodiment, the embodiment further optimizes the solution so that the roller 205 can stably move inside the heat exchange tube, and the roller 205 can enter the installation groove 201 only through the contact between the cap 202c and the upper guide wheel 105.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A rust removal and polishing device for heat exchange tubes, characterized in that: include, A polishing mechanism (100), comprising a processing table (101), a plurality of first support seats (102) and a plurality of second support seats (103) arranged on the processing table (101), the plurality of first support seats (102) being located between the plurality of second support seats (103), two support rods (104) being mounted on each of the second support seats (103), guide wheels (105) being mounted on the two support rods (104), a connecting rod (106) being slidably arranged between the two guide wheels (105), a cleaning assembly (107) for rust removal and polishing of the inner wall of a heat exchange tube being connected to one end of the connecting rod (106) close to the first support seat (102), and a driving member being connected to the other end of the connecting rod (106); A support mechanism (200), comprising a mounting groove (201) formed on a connecting rod (106), a pressing assembly (202) and a driving assembly (203) being arranged inside the mounting groove (201), a support body (204) being connected to the driving assembly (203), a roller (205) being mounted on the support body (204), and a limiting assembly (206) being arranged inside the mounting groove (201); The side of the roller (205) away from the bracket body (204) is located outside the mounting groove (201); The pressing assembly (202) and the driving assembly (203) can drive the roller (205) to completely enter the interior of the installation groove (201), and the roller (205) can provide a stable supporting force for the connecting rod (106). When the roller (205) moves, it is restricted by the limiting assembly (206) and will not enter the interior of the installation groove (201).

2. The rust removal and polishing equipment for heat exchange tubes according to claim 1, characterized in that: The cleaning assembly (107) comprises a driving motor (107a) arranged at one end of the connecting rod (106) close to the first supporting seat (102), and the output end of the driving motor (107a) is connected to a cleaning brush (107b).

3. The rust removal and polishing equipment for heat exchange tubes according to claim 2, characterized in that: The pressing assembly (202) comprises an annular support block (202a) installed inside the installation groove (201), the annular support block (202a) is connected to a first spring (202b), one end of the first spring (202b) away from the annular support block (202a) is connected to a cover cap (202c), and the cover cap (202c) is provided with a first inclined surface (202d) and a second inclined surface (202e); One end of the cover cap (202c) away from the roller (205) passes through the installation groove (201), and the top of the cover cap (202c) is an inclined arc surface.

4. The rust removal and polishing equipment for heat exchange tubes according to claim 3, characterized in that: The driving assembly (203) comprises four auxiliary blocks (203a) fixedly mounted on the inner wall of the mounting groove (201), the four auxiliary blocks (203a) being distributed in a rectangular shape, a sliding block (203b) being arranged between the four auxiliary blocks (203a), and a third inclined surface (203c) and a fourth inclined surface (203d) being arranged on the sliding block (203b); The slider (203b) is in a "Z" shape after being rotated 90 degrees, wherein the middle portion is inclined, and the third inclined surface (203c) and the fourth inclined surface (203d) are respectively arranged on two sides of the slider (203b) that are away from each other, and the third inclined surface (203c) corresponds to the first inclined surface (202d), and the fourth inclined surface (203d) corresponds to the second inclined surface (202e).

5. The rust removal and polishing equipment for heat exchange tubes according to claim 4, characterized in that: The support body (204) comprises a horizontal section and a vertical section; The driving assembly (203) further comprises an inclined slot (203e) formed on the vertical section of the support body (204); The middle of the sliding block (203b) slides through the inclined groove (203e).

6. The rust removal and polishing equipment for heat exchange tubes according to claim 5, characterized in that: The limiting assembly (206) comprises a positioning groove (206a) formed on the connecting rod (106); a positioning block (206b) and a second spring (206c) are arranged inside the positioning groove (206a); one end of the second spring (206c) is connected to the inner wall of the positioning groove (206a); and the other end of the second spring (206c) is fixedly connected to the positioning block (206b); one end of the positioning block (206b) passes through the positioning groove (206a) and is connected to a stop block (206d); and a fifth inclined surface (206e) is arranged on the stop block (206d); The fifth inclined surface (206e) matches the first inclined surface (202d).

7. The rust removal and polishing equipment for heat exchange tubes according to claim 6, characterized in that: The positioning groove (206a) matches the positioning block (206b).

8. The rust removal and polishing equipment for heat exchange tubes according to claim 7, characterized in that: The bottom of the stop block (206d) and the top of the horizontal section of the bracket body (204) are both flat surfaces; A notch (204a) is also provided on the horizontal section of the support body (204).

9. The rust removal and polishing equipment for heat exchange tubes according to claim 8, characterized in that: The vertical section of the support body (204) passes through the annular support block (202a) and is connected to the top plate (204b); The size of the top plate (204b) is smaller than the inner diameter of the first spring (202b).

10. The rust removal and polishing equipment for heat exchange tubes according to claim 9, characterized in that: The stop block (206d) and the positioning block (206b) are both made of high-strength materials.

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