Plate heat exchanger inner wall anticorrosion treatment equipment and treatment process

Abstract

The present application relates to plate heat exchanger manufacturing processing technical field, specifically propose a kind of plate heat exchanger inner wall anticorrosion treatment equipment and processing technology;Including the plate heat exchanger plate piece horizontal linear conveying plate piece conveyor, the conveying path of plate piece conveyor is evenly distributed with multiple groups of plate piece clamping head that is fixedly equipped with synchronous conveying movement;Two spraying devices are sequentially distributed and arranged above the plate piece conveyor in its conveying direction;Fixed and dialing device are symmetrically arranged on the two sides of plate piece conveyor in conveying direction.The equipment provided by the present application can promote the flow of spraying liquid on both sides of the plate, avoid the accumulation of coating liquid on the concave surface of the plate, improve the uniformity of the coating after shaping, and improve the quality of the plate's anticorrosion coating spraying, which is conducive to ensuring the heat exchange efficiency of plate heat exchanger.

Description

Technical Field

[0001] The invention relates to the technical field of plate heat exchanger manufacturing and processing, and specifically proposes an anti-corrosion treatment device and a treatment process for the inner wall of a plate heat exchanger. Background Art

[0002] A plate heat exchanger is a highly efficient heat exchanger composed of a series of stacked, corrugated metal plates. Thin rectangular channels are formed between the plates, through which heat is exchanged. Plate heat exchangers are ideal for liquid-liquid and liquid-vapor heat exchange. The inner wall of a plate heat exchanger is primarily composed of the outer walls of each plate. These surfaces directly contact the heat exchange medium for heat exchange. Plates are typically made of metal materials such as stainless steel and copper. The composition of the circulating medium is complex and diverse, often corrosive to the surfaces of the metal plates. Therefore, the plate surfaces require corrosion protection. Currently, applying an anti-corrosion coating to the surface of the plates is a simple, direct, and effective anti-corrosion measure.

[0003] During the anti-corrosion coating process for plate heat exchanger plates, in order to improve the adhesion strength of the coating, it is generally necessary to pre-attach a layer of adhesive before the anti-corrosion coating is attached. The adhesive layer and the anti-corrosion coating can be attached by dipping or spraying. Regardless of whether dipping or spraying is used for processing, the existing processing often ignores the uniformity of coating adhesion and directly proceeds to drying and shaping. Both sides of the plate have a certain corrugated shape, that is, the plate surface is uneven, and the coating easily accumulates on the concave surface, resulting in uneven coating thickness distribution, which directly causes uneven plate thickness. At locations with larger thickness, the medium flow resistance increases, and the heat exchange efficiency is greatly reduced, thus affecting the heat exchange efficiency and heat exchange effect of the assembled plate heat exchanger. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an anti-corrosion treatment device and treatment process for the inner wall of a plate heat exchanger, which are used to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a plate heat exchanger inner wall anti-corrosion treatment equipment, including a plate conveyor for horizontal and linear conveying of plate heat exchanger plates, and a plurality of groups of plate clamps that are evenly distributed and fixedly installed on the conveying path of the plate conveyor and move synchronously with it. Each group of the plate clamps includes two plate clamps that are horizontally mirror-symmetrically arranged perpendicular to the conveying direction of the plate conveyor, and each group of two plate clamps is used to cooperate in clamping the plate heat exchanger plates; two spraying devices are distributed in sequence above the plate conveyor in its conveying direction; and fixing and rotating devices are symmetrically arranged on both sides of the plate conveyor in the conveying direction.

[0006] The plate clamping head includes a support frame fixed on the conveying end of the plate conveyor, and a passive rotating shaft axially perpendicular to the conveying direction of the plate conveyor is installed on the support frame for horizontal rotation. An eccentric counterweight block and an end disk are fixed at both ends of the passive rotating shaft, and the end disk is located on the opposite side of the two plate clamping heads. A spline shaft coaxially arranged with the passive rotating shaft is fixed on the disk surface of the plate clamping head on the opposite side of the end disk, and a sliding sleeve is provided on the spline shaft for clamping a guide groove clamp in the plate guide rod groove; a clamping spring is provided on the spline shaft, and both ends of the clamping spring are fixed between the end disk and the guide groove clamp.

[0007] Under the conveying drive of the plate conveyor, when two groups of the plate clamping heads are aligned one by one with the two spraying devices, with the cooperation of the two fixing and rotating devices, the two groups of passive rotating shafts in the two groups of plate clamping heads aligned with the two spraying devices can be synchronously fixed, and at the same time, the two passive rotating shafts in each of the remaining groups of the plate clamping heads located in the same column and horizontally distributed with the two groups of the plate clamping heads aligned with the two spraying devices can be synchronously rotated.

[0008] Preferably, the fixing and rotating device includes an L-plate frame fixed to the side wall of the plate conveyor, the inner side of the L-plate frame is provided with a travel frame driven by horizontal movement perpendicular to the conveying direction of the plate conveyor, and a plurality of pair of rods are provided on the side of the travel frame facing the plate conveyor, and the plurality of pair of rods are evenly distributed in the horizontal linear conveying direction of the plate conveyor, and the distribution spacing is equal to the distribution spacing of the plurality of groups of plate clamps; when two of the groups of plate clamps are aligned one by one with the two spraying devices, the plurality of pair of rods are aligned one by one with the plurality of horizontally distributed groups of plate clamps located in the same column of the two groups of aligned plate clamps, and two of the pair of rods aligned one by one with the two groups of aligned plate clamps are fixed on the travel frame, and the remaining pair of rods are horizontally rotatably installed on the travel frame; the travel frame is equipped with a rotating drive mechanism that drives all the rotatably installed pair of rods to rotate synchronously; the pair of rods is inserted in cooperation with the eccentric counterweight.

[0009] Preferably, the dial drive mechanism includes a reciprocating cylinder horizontally fixed on the stroke frame and a sliding rod fixedly connected to the output end of the reciprocating cylinder. The sliding rod is horizontally slidably installed on the stroke frame along a moving direction perpendicular to the stroke frame. A rocker is fixed on the axial end of the insertion rod rotatably installed on the stroke frame that is away from the eccentric counterweight block, and a connecting rod is hinged at both ends between the rocker and the sliding rod.

[0010] Preferably, a cross socket is provided on the eccentric counterweight, and a cross plug which can be inserted into the cross socket is fixed on one side axial end of the insertion rod.

[0011] Preferably, a clamping groove is provided along the cross-sectional profile of the guide groove clamp, and when the plate is clamped between the two guide groove clamps, the guide rod groove of the plate is clamped in the clamping groove.

[0012] Preferably, when the pair of insertion rods fixed on the travel frame are correspondingly inserted into the eccentric counterweight block at the positioning position, the guide groove clamp in the plate clamp at the position can be axially and horizontally clamped in the guide rod groove of the plate, and the clamped plate surface is in a vertical state; the spraying device includes a vertically lifting and lowering travel frame, and the travel frame is provided with two rows of mirror-symmetrically arranged nozzles, and the nozzles in each row are evenly arranged along a horizontal straight line perpendicular to the conveying direction of the plate conveyor.

[0013] Preferably, the hole end of the cross jack is expanded.

[0014] Preferably, the guide groove chuck is processed with symmetrical grooves at both ends of the axial direction.

[0015] In addition, the present invention also provides a plate heat exchanger inner wall anti-corrosion treatment process, the treatment process steps are as follows:

[0016] S1. Clamp the plate to be processed between two plate clamping heads and convey it through the plate conveyor.

[0017] S2. When the plate is intermittently transported to the spraying device for spraying adhesive, the adhesive layer is sprayed synchronously on both sides of the plate through the spraying device.

[0018] S3. The plate conveyor continues to drive the plates that have been sprayed with adhesive to be transported intermittently. During the transportation process before the anti-corrosion coating is sprayed, the plates are rotated by the fixing and turning devices to rotate and even the adhesive layer on the surface of the plates.

[0019] S4. When the plate is intermittently transported to the spraying device for spraying the anti-corrosion coating liquid, the anti-corrosion coating is sprayed synchronously on the plate surfaces on both sides of the plate through the spraying device.

[0020] S5. The plate conveyor continues to drive the plates sprayed with the anti-corrosion coating liquid to be intermittently conveyed, and further drives the plates to rotate through the fixing and rotating devices to rotate and homogenize the anti-corrosion coating liquid on the surface of the plates.

[0021] S6. Remove the anti-corrosion coating on the plate surface after it is homogenized and fixed.

[0022] The above technical solution has the following advantages or beneficial effects: 1. The present invention provides an anti-corrosion treatment equipment for the inner wall of a plate heat exchanger, and a plurality of groups of plate clamping heads that can clamp the plates are evenly arranged on the plate conveyor. The plate conveyor can drive the clamped plates to be transported intermittently in batches one by one. During the transportation, the adhesive spraying and the anti-corrosion coating spraying can be completed respectively through two spraying devices, thereby realizing continuous batch processing.

[0023] 2. The present invention provides an anti-corrosion treatment device for the inner wall of a plate heat exchanger. When the plates are transported, the fixing and rotating devices are provided to support and fix the plates in the spraying state, thereby cooperating with the spraying device to achieve stable spraying. On the other hand, after the adhesive spraying and the anti-corrosion coating spraying are completed, the plates can be rotated to promote the fluidization and uniform distribution of the spraying liquid on both sides of the plate, avoid the accumulation of the coating liquid on the concave surface of the plate and cause uneven coating thickness, improve the uniformity of the coating after shaping, thereby improving the anti-corrosion coating spraying quality of the plate, which is beneficial to ensure the heat exchange efficiency of the plate heat exchanger.

[0024] 3. The present invention provides an anti-corrosion treatment device for the inner wall of a plate heat exchanger. An eccentric counterweight is provided in the plate clamping head, which is beneficial for the relative alignment of the two guide groove clamps in each group to facilitate the clamping of the plate, and at the same time can facilitate the insertion and alignment of each pair of insertion rods of the fixing and turning device. In addition, the clamping method of the guide groove clamp to clamp the plate guide rod groove makes it possible to avoid dead angles in the spraying of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention and its features, configurations and advantages will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, which are not drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a plate heat exchanger inner wall anti-corrosion treatment device provided by the present invention at one viewing angle.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the plate heat exchanger inner wall anti-corrosion treatment equipment provided by the present invention from another perspective.

[0028] Figure 3 yes Figure 1 A local enlarged schematic diagram of point A in the middle.

[0029] Figure 4 yes Figure 2 A partial enlarged schematic diagram of point B in the middle.

[0030] Figure 5It is a top view of an anti-corrosion treatment device for the inner wall of a plate heat exchanger provided by the present invention.

[0031] Figure 6 yes Figure 5 Cross-sectional view of CC.

[0032] Figure 7 yes Figure 5 Cross-sectional view of DD.

[0033] Figure 8 yes Figure 6 A partial enlarged schematic diagram of point E in the middle.

[0034] Figure 9 This is a process flow chart for the anti-corrosion treatment process of the inner wall of a plate heat exchanger.

[0035] In the figure: 1. Plate conveyor; 11. Frame; 111. Matching guide rail; 12. Conveyor shaft; 121. Toothed pulley; 13. Conveyor toothed belt; 2. Plate clamping head; 21. Support frame; 211. Support plate; 212. Fixed plate; 213. Ball head rotating rod; 22. Passive shaft; 221. Eccentric counterweight; 2211. Cross socket; 222. End plate; 23. Spline shaft; 24. Guide chuck; 241. Clamping groove; 25. Clamping spring; 3. Spraying device; 31. Support frame; 32. Drive Motor; 33. Screw; 331. Pulley; 34. Synchronous belt; 35. Travel frame; 36. Nozzle; 4. Fixing and turning device; 41. L-plate frame; 411. Slide groove; 42. Advance and retreat cylinder; 43. Travel frame; 431. Sliding bottom plate; 432. Guide side plate; 4321. Slide rail; 433. Support side plate; 435. Connecting end plate; 44. Insert rod; 441. Cross plug; 45. Turning drive mechanism; 451. Reciprocating cylinder; 452. Sliding rod; 453. Connecting rod; 454. Rocker. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the specific implementation methods of the present invention through the description of embodiments with reference to the accompanying drawings. The purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and to facilitate its implementation, but it does not limit the present invention.

[0037] like Figure 1 、 Figure 2 、 Figure 5 and Figure 6As shown, a plate heat exchanger inner wall anti-corrosion treatment equipment includes a plate conveyor 1 for horizontal and linear conveying of plate heat exchanger plates. A plurality of groups of plate clamps 2 that move synchronously with the plate conveyor 1 are evenly distributed and fixedly installed on the conveying path of the plate conveyor 1. Each group of plate clamps 2 includes two plate clamps 2 that are horizontally mirror-symmetrically arranged perpendicular to the conveying direction of the plate conveyor 1. Each group of two plate clamps 2 is used to cooperate in clamping the plate heat exchanger plates; two spraying devices 3 are distributed in sequence above the plate conveyor 1 in its conveying direction; fixing and rotating devices 4 are symmetrically arranged on both sides of the plate conveyor 1 in the conveying direction.

[0038] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 and Figure 8 As shown, the plate conveyor 1 includes a frame 11, on which a plurality of conveying shafts 12 evenly distributed along a horizontal straight line are horizontally rotatably installed, and the conveying shafts 12 are fixedly installed with two toothed pulleys 121 distributed in the axial direction, and a total of two rows of toothed pulleys 121 distributed along a straight line are distributed on the plurality of conveying shafts 12, and a conveying toothed belt 13 is commonly engaged between the plurality of toothed pulleys 121 in each row; the shaft end on one side of one of the conveying shafts 12 can be connected to the output shaft of a conveying motor for power input, and the conveying motor is not shown in the drawings. It should be noted that the plate conveyor 1 in this embodiment adopts an intermittent conveying method for conveying, and its intermittent conveying distance is equal to the distribution spacing of the multiple sets of plate clamping heads 2, and after each intermittent conveying pause, the multiple sets of plate clamping heads 2 always maintain the same Figure 5 The position distribution state shown, that is, the conveying motor is started according to a certain starting cycle, and intermittent conveying is a prior art, which is understood and mastered by technicians in this field. In addition, the conveying motor is a self-locking motor with a self-locking structure. In this embodiment, the engagement of the conveying toothed belt 13 and the toothed belt wheel 121 is adopted so that the position of the conveying toothed belt 13 can be better maintained in a fixed state after the self-locking of the suspended conveying is completed.

[0039] like Figure 3 、 Figure 4 and Figure 8As shown, multiple groups of plate clamping heads 2 are evenly distributed over the entire length of the conveyor toothed belt 13, and two plate clamping heads 2 in each group are fixed one-to-one on the two conveyor toothed belts 13. The plate clamping heads 2 include a support frame 21 fixed on the conveying end of the plate conveyor 1, the support frame 21 includes a vertically arranged support plate 211, a fixed plate 212 horizontally welded to a plate surface on one side of the support plate 211, and a ball head rotating rod 213 horizontally rotatably mounted on a plate surface on the other side of the support plate 211, the fixed plate 212 is fixed to the conveyor toothed belt 13 by bolts, and two matching guide rails 111 are provided on the frame 11 to cooperate with the conveying path of the conveyor toothed belt 13. The two matching guide rails 111 are relatively arranged on both sides of the two conveyor toothed belts 13, and the matching guide rails 111 are waist-shaped holes. The ball head rotating rod 213 extends into the groove of the matching guide rail 111 near one side. Under the conveying drive of the conveyor toothed belt 13, the ball head rotating rod 213 can rotate along the matching guide rail. The guide rail 111 rolls because the conveyor toothed belt 13 is relatively flexible. The support frame 21 is unstable when it is fixed on the conveyor toothed belt 13 only by the support plate 211. The rigid conveying guidance of the ball head rotating rod 213 by the matching guide rail 111 basically ensures the stability of the plate clamping head 2 fixed on the conveyor toothed belt 13; a passive rotating shaft 22 with an axial direction perpendicular to the conveying direction of the plate conveyor 1 is horizontally rotatably installed on the support plate 211, and an eccentric counterweight block 221 and an end disk 222 are respectively fixed at both ends of the passive rotating shaft 22 by bolts. The end disk 222 is located on the opposite side of the two plate clamping heads 2, and a spline shaft 23 coaxially arranged with the passive rotating shaft 22 is welded on the disk surface of the end disk 222 facing the plate clamping head 2 on the opposite side. A guide groove chuck 24 for clamping in the guide rod groove of the plate is provided on the sliding sleeve of the spline shaft 23; a clamping spring 25 is provided on the spline shaft 23, and the two ends of the clamping spring 25 are welded between the end plate 222 and the guide groove chuck 24. A clamping groove 241 is provided along the cross-sectional profile of the guide groove chuck 24. When the plate is clamped between the two guide groove chucks 24, the guide rod groove of the plate is clamped in the clamping groove 241. In this embodiment, the guide rod groove of the plate of the plate heat exchanger to be processed is a U-shaped structure. The outline dimensions of the clamping groove 241 correspond to the outline dimensions of the guide rod groove of the plate to be processed. The guide groove chuck 24 is symmetrically beveled at both ends of the axial direction, so that the plate can be tilted and placed between the two clamping grooves 241 when clamping the plate. Note: Guide rod grooves are generally provided at the center positions of the upper and lower plate edges of the plate to cooperate with the upper and lower guide rods to stack and position multiple plates.

[0040] Driven by the plate conveyor, when two groups of plate clamping heads 2 are aligned with the two spraying devices 3 one by one, with the cooperation of the two fixing and rotating devices 4, the two groups of passive rotating shafts 22 in the two groups of plate clamping heads 2 aligned with the two spraying devices 3 can be synchronously fixed, and at the same time, the two passive rotating shafts 22 in each of the remaining groups of plate clamping heads 2 located in the same column and horizontally distributed with the two groups of plate clamping heads 2 aligned with the two spraying devices 3 can be synchronously rotated.

[0041] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 6 and Figure 8 As shown, the fixing and turning device 4 includes an L-plate frame 41 welded on the outer wall of the frame 11, and a travel frame 43 is provided on the inner side of the L-plate frame 41. The travel frame 43 includes a sliding bottom plate 431, a guide side plate 432, a support side plate 433 and two connecting end plates 435. A plurality of slide grooves 411 perpendicular to the conveying direction of the plate conveyor 1 are horizontally welded on the inner end surface of the horizontal plate of the L-plate frame 41. The sliding bottom plate 431 is slidably installed on the plurality of slide grooves 411. The guide side plates 432 and the support side plates 433 are respectively Aligned and welded on the two long sides of the sliding bottom plate 431, the guide side plate 432 is located between the vertical plate of the L plate frame 41 and the supporting side plate 433, and the two connecting end plates 435 are welded one by one between the two ends of the guide side plate 432 and the supporting side plate 433; two in-and-out cylinders 42 are fixed horizontally on the outer wall of the vertical plate of the L plate frame 41 by bolts, and the guide side plate 432 is welded between the output ends of the two in-and-out cylinders 42; a plurality of plug rods 44 are provided on the supporting side plate 433, and a plurality of plug rods 44 are provided on the supporting side plate 433. 4 are evenly distributed in the horizontal straight conveying direction of the plate conveyor 1, and the distribution spacing is equal to the distribution spacing of the multiple sets of plate clamping heads 2; when two sets of plate clamping heads 2 are aligned one by one with the two spraying devices 3, the multiple pairs of insertion rods 44 are aligned one by one with the multiple sets of plate clamping heads 2 located in the same column as the two sets of plate clamping heads 2 aligned with the two spraying devices 3, and two of the pairs of insertion rods 44 aligned one by one with the two sets of plate clamping heads 2 aligned with the two spraying devices 3 are welded to the supporting side plate 433 The remaining pairs of insertion rods 44 are horizontally rotatably mounted on the supporting side plates 433 through bearings; the stroke frame 43 is equipped with a dial driving mechanism 45 that drives all the rotatably mounted pairs of insertion rods 44 to rotate synchronously; the insertion rods 44 are inserted in conjunction with the eccentric counterweight 221; a cross socket 2211 is provided on the eccentric counterweight 221, and a cross plug 441 that can be inserted into the cross socket 2211 is welded to one side of the shaft end of the insertion rod 44. In order to facilitate alignment and insertion, the hole end of the cross socket 2211 is expanded.

[0042] like Figure 1 、 Figure 2 、 Figure 4 and Figure 8 As shown, the toggle drive mechanism 45 includes a reciprocating cylinder 451 horizontally fixed to one of the connecting end plates 435 by bolts, and a sliding rod 452 welded to the output end of the reciprocating cylinder 451. A slide rail 4321 is horizontally welded to the inner side of the guide side plate 432. The sliding rod 452 is slidably mounted in the slide rail 4321. A rocker 454 is welded to the axial end of the insertion rod 44, which is rotatably mounted on the supporting side plate 433, on the side facing away from the eccentric counterweight 221. Connecting rods 453 are hingedly provided at both ends between the rocker 454 and the sliding rod 452. When the reciprocating cylinder 451 is activated, the reciprocating cylinder 451 drives the sliding rod 452 to slide horizontally back and forth along the slide rail 4321. The sliding rod 452, in turn, drives the multiple rockers 454 to rotate one by one through the multiple connecting rods 453, thereby driving the rotatably mounted insertion rod 44 to continuously rotate through the rocker 454.

[0043] Because two of the insertion rods 44 arranged opposite to the spraying device 3 are fixedly installed, the state of the cross plug 441 is fixed. In this embodiment, when the output rod of the reciprocating cylinder 451 is not extended, the state of the cross plug 441 on the rotatably installed insertion rod 44 is consistent with the state of the cross plug 441 on the fixedly installed insertion rod 44; during actual processing, when the insertion rod 44 is close to the eccentric counterweight 221 aligned with it, the cross plug 441 can be aligned and inserted into the cross socket 2211. The purpose of the eccentric counterweight 221 is to make the overall center of gravity of the rotatable parts of the plate clamping head 2 except the support frame 21 vertically downward. When in a state of center of gravity balance, the position state of the eccentric counterweight 221 is determined, that is, when the position of the eccentric counterweight 221 is determined, the cross socket 2211 is just aligned with the cross plug 441.

[0044] The two fixing and rotating devices 4 can simultaneously fix or rotate the plate clamping heads 2 distributed on the same side in multiple groups of plate clamping heads 2. Specifically, before the alignment insertion, the output rod of the reciprocating cylinder 451 is restored to the zero extension state, that is, the cross plug 441 of the rotatably installed insertion rod 44 is switched to a state where it can be aligned and inserted into the cross hole 2211; then, by synchronously starting the two advance and retreat cylinders 42, the guide side plates 432 are pushed so that the stroke frame 43 as a whole slides horizontally toward the direction close to the plate clamping head 2. As the movement approaches, the cross plug 441 of each insertion rod 44 is inserted into the cross hole 2211 of the eccentric counterweight 221 at the corresponding position. The fixedly installed insertion rod 44 locks the inserted eccentric counterweight 221 and cannot rotate. When the dial drive mechanism 45 starts to dial and rotate again, it can drive all the eccentric counterweights 221 inserted by the rotatably installed insertion rods 44 to rotate synchronously, and then the eccentric counterweight 221 drives the passive rotating shaft 22 to make the guide groove clamp 24 rotate synchronously.

[0045] like Figure 6and Figure 7 As shown, when the insertion rod 44 fixed to the travel frame 43 is inserted into the eccentric counterweight 221 at the corresponding position, the guide groove clamp 24 in the plate clamping head 2 at the corresponding position can be axially clamped in the guide rod groove of the plate, and the clamped plate surface is in a vertical state. The spraying device 3 includes a vertical lifting drive travel frame 35, and the travel frame 35 is provided with two rows of mirror-symmetrically arranged spray heads 36. Each row of spray heads 36 is evenly arranged along a horizontal straight line perpendicular to the conveying direction of the plate conveyor 1. The spraying device 3 also includes a support frame 21 welded to the frame 11, a drive motor 32 fixed to the top of the support frame 31 by bolts, and two vertically rotatably mounted on the support frame 31. The top of one of the screws 33 is fixedly connected to the output shaft of the drive motor 32. A pulley 331 is provided near the top of the screw 33. The two pulleys 331 are driven by a synchronous belt 34. The travel frame 35 is threadedly connected between the two screws 33. The spray head 36 can be an automatic spray head 36 for automatic spraying on the market. The spraying process of the two spraying devices 3 is consistent, and their spraying processes are described together here. During actual spraying, the plate will be conveyed to the bottom of the spraying device 3 under the drive of the plate conveyor 1, and the plate will be in a vertical state and located between the two rows of spray heads 36. By starting the drive motor 32 to drive the screw 33 connected thereto to rotate, and then driven by the synchronous belt 34, the two screws 33 will rotate synchronously, and the two screws 33 will drive the travel frame 35 to descend vertically. When the plate is lowered to the spraying range of the two rows of spray heads 36, the two rows of spray heads 36 start spraying, and in the process of continuing to descend, the two rows of spray heads 36 synchronously cover the two sides of the plate with spraying. After spraying is completed, the two rows of spray heads 36 are closed and return to the starting height.

[0046] In this device, the Figure 5 As shown, the plate conveyor 1 transports from left to right, wherein the spraying device 3 on the left is used for spraying adhesive, and the spraying device 3 on the right is used for spraying anti-corrosion coating liquid.

[0047] During actual processing, place the plate to be processed on Figure 4 Between the two plate clamping heads 2 in the group located on the leftmost side of the upper end of the conveyor toothed belt 13, the two guide rod grooves of the plate are inserted into the clamping grooves 241 of the two guide groove clamps 24 one by one. Under the elastic force of the clamping spring 25, the plate is clamped between the two guide groove clamps 24. Because the plate itself is generally a centrally symmetrical structure, the clamped plate maintains a vertically balanced state under the action of the two eccentric counterweights 221.

[0048] Then, under the intermittent drive of the plate conveyor 1, the clamped plates will be transported to the bottom of the two spraying devices 3 in turn, and then the spraying device 3 will synchronously cover the two side surfaces of the plate, and the adhesive spraying and the anti-corrosion coating liquid spraying will be completed in turn; it should be noted that when the plate conveyor 1 pauses, the fixing and turning devices will immediately enter the alignment insertion state, so before spraying, the two passive rotating shafts 22 located under the spraying device 3 are locked by the insertion rod 44, and the plate can be stably sprayed during spraying. , while each other group of plate clamping heads 2 is in a rotating state driven by the dial driving mechanism 45, that is, when the plate is transported between the two spraying devices 3, or in the process of completing the anti-corrosion coating liquid spraying, and when the plate conveyor 1 is in a conveying pause state, the plate is in a rotating state; before the plate conveyor 1 starts conveying again, the fixing and dialing device 4 is immediately withdrawn, that is, the cross plug 441 is pulled out from the cross socket 2211, so that the plate conveyor 1 can drive each group of plate clamping heads 2 to continue circulating conveying.

[0049] When the plate is in a rotating state during transportation, no matter after the adhesive spraying or the anti-corrosion coating liquid spraying is completed, the distribution state of the spraying material on both sides of the plate can be changed through multiple intermittent rotation operations, which can promote the flow of the spraying material on the plate surface, thereby avoiding the accumulation of the spraying material on the concave surface of the plate, improving the uniformity of the distribution of the spraying material on the entire plate surface, and improving the processing quality of the plate anti-corrosion coating, so as not to affect the heat exchange efficiency due to the uneven distribution of the anti-corrosion coating.

[0050] In addition, an existing drying device can be installed in the second half of the conveying of the plate conveyor 1, that is, when the plate is sprayed and the spray layer is evenly distributed, it is directly dried and shaped, and the plate is removed after drying and shaping.

[0051] In addition, if Figure 9 As shown, the present invention also provides a process for anti-corrosion treatment of the inner wall of a plate heat exchanger, and the specific steps of the treatment process are as follows:

[0052] S1. Clamp the plate to be processed between two plate clamping heads 2 and convey it through the plate conveyor 1 for gap transportation.

[0053] S2. When the plate is intermittently transported to the position of the spraying device 3 for spraying adhesive, the spraying device 3 performs synchronous covering spraying of the adhesive layer on both sides of the plate.

[0054] S3. The plate conveyor 1 continues to drive the plate that has been sprayed with adhesive to be transported intermittently. During the transportation process before the anti-corrosion coating is sprayed, the plate is rotated by the fixing and turning device 4 to rotate and homogenize the adhesive layer on the surface of the plate.

[0055] S4. When the plate is intermittently transported to the spraying device 3 for spraying the anti-corrosion coating liquid, the spraying device 3 performs synchronous covering spraying of the anti-corrosion coating on the plate surfaces on both sides of the plate.

[0056] S5. The plate conveyor 1 continues to drive the plates sprayed with the anti-corrosion coating liquid to be intermittently conveyed, and further drives the fixing and rotating device 4 to rotate the plates to rotate and homogenize the anti-corrosion coating liquid on the surface of the plates.

[0057] S6. Remove the anti-corrosion coating on the plate surface after it is homogenized and fixed.

[0058] Those skilled in the art should understand that they can implement the above-mentioned variations by combining the existing technology and the above-mentioned embodiments, which will not be described in detail here. Such variations do not affect the essence of the present invention and will not be described in detail here.

[0059] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A plate heat exchanger inner wall anti-corrosion treatment device, characterized by: The invention comprises a plate conveyor (1) for horizontally and linearly conveying plate heat exchanger plates, wherein a plurality of groups of plate clamping heads (2) are evenly distributed and fixedly installed on the conveying path of the plate conveyor (1) and are synchronously conveyed and moved with the plate conveyor, each group of the plate clamping heads (2) comprises two plate clamping heads (2) arranged horizontally and mirror-symmetrically with respect to the conveying direction of the plate conveyor (1), and each group of two plate clamping heads (2) are used to cooperate and clamp the plate heat exchanger plates; two spraying devices (3) are sequentially arranged above the plate conveyor (1) in the conveying direction; and fixing and rotating devices (4) are symmetrically arranged on both sides of the plate conveyor (1) in the conveying direction; The plate clamping head (2) comprises a support frame (21) fixed on the conveying end of the plate conveyor (1); a passive rotating shaft (22) axially perpendicular to the conveying direction of the plate conveyor (1) is horizontally rotatably mounted on the support frame (21); an eccentric counterweight (221) and an end plate (222) are respectively fixed at both ends of the passive rotating shaft (22); the end plate (222) is located on one side of the opposite surface of the two plate clamping heads (2); a spline shaft (23) coaxially arranged with the passive rotating shaft (22) is fixed on the disk surface of the plate clamping head (2) on the opposite side. The spline shaft (23) is provided with a guide groove clamp (24) for clamping in the plate guide rod groove; the spline shaft (23) is provided with a clamping spring (25), and the two ends of the clamping spring (25) are fixed between the end plate (222) and the guide groove clamp (24); Under the conveying drive of the plate conveyor (1), when two groups of the plate clamping heads (2) are aligned with the two spraying devices (3) one by one, with the cooperation of the two fixing and rotating devices (4), the two groups of passive rotating shafts (22) in the two groups of plate clamping heads (2) aligned with the two spraying devices (3) can be synchronously fixed, and at the same time, the two passive rotating shafts (22) in each of the remaining groups of the plate clamping heads (2) located in the same column and horizontally distributed with the two groups of the plate clamping heads (2) aligned with the two spraying devices (3) can be synchronously rotated.

2. The plate heat exchanger inner wall anti-corrosion treatment equipment according to claim 1, characterized in that: The fixing and rotating device (4) includes an L-shaped plate frame (41) fixed on the side wall of the plate conveyor (1), and a travel frame (43) is provided on the inner side of the L-shaped plate frame (41) for horizontal movement and driving perpendicular to the conveying direction of the plate conveyor (1). A plurality of plug-in rods (44) are provided on the side of the travel frame (43) facing the plate conveyor (1), and the plurality of plug-in rods (44) are evenly distributed in the horizontal straight conveying direction of the plate conveyor (1), and the distribution spacing is equal to the distribution spacing of the plurality of groups of plate clamping heads (2); when two groups of the plate clamping heads (2) are connected to two of the spraying devices ( 3) When aligning one by one, a plurality of the pair of insertion rods (44) are aligned one by one with a plurality of horizontally distributed groups of plate clamping heads (2) located in the same column as the two groups of the aligned plate clamping heads (2), and two of the pair of insertion rods (44) aligned one by one with the two groups of the aligned plate clamping heads (2) are fixed on the travel frame (43), and the remaining pair of insertion rods (44) are horizontally rotatably installed on the travel frame (43); the travel frame (43) is equipped with a dial driving mechanism (45) that drives all the rotatably installed pair of insertion rods (44) to rotate synchronously; the pair of insertion rods (44) are inserted in cooperation with the eccentric counterweight block (221).

3. The plate heat exchanger inner wall anti-corrosion treatment equipment according to claim 2, characterized in that: The dial drive mechanism (45) includes a reciprocating cylinder (451) fixed horizontally on the stroke frame (43) and a sliding rod (452) fixedly connected to the output end of the reciprocating cylinder (451). The sliding rod (452) is mounted on the stroke frame (43) so as to slide horizontally along a moving direction perpendicular to the stroke frame (43). A rocker (454) is fixed to the axial end of the side of the insertion rod (44) rotatably mounted on the stroke frame (43) that faces away from the eccentric counterweight (221). A connecting rod (453) is hingedly provided at both ends between the rocker (454) and the sliding rod (452).

4. The plate heat exchanger inner wall anti-corrosion treatment equipment according to claim 2, characterized in that: The eccentric counterweight (221) is provided with a cross socket (2211), and a cross plug (441) capable of being inserted into the cross socket (2211) is fixed to one axial end of the plug rod (44).

5. The plate heat exchanger inner wall anti-corrosion treatment equipment according to claim 1, characterized in that: A clamping groove (241) is provided on the guide groove clamp (24) along the cross-sectional profile. When a plate is clamped between the two guide groove clamps (24), the guide rod groove of the plate is clamped in the clamping groove (241).

6. The plate heat exchanger inner wall anti-corrosion treatment equipment according to claim 2, characterized in that: When the insertion rod (44) fixed on the travel frame (43) is correspondingly inserted into the eccentric counterweight (221) at the positioning position, the guide groove clamp (24) in the plate clamp (2) at the position can be axially and horizontally clamped in the guide rod groove of the plate, and the clamped plate surface is in a vertical state; the spraying device (3) includes a vertically lifting and driving travel frame (35), and two rows of mirror-symmetrically arranged nozzles (36) are arranged on the travel frame (35), and each row of the nozzles (36) are evenly arranged along a horizontal straight line perpendicular to the conveying direction of the plate conveyor (1).

7. The plate heat exchanger inner wall anti-corrosion treatment equipment according to claim 4, characterized in that: The hole end of the cross jack (2211) is expanded.

8. The plate heat exchanger inner wall anti-corrosion treatment equipment according to claim 5, characterized in that: The guide groove chuck (24) is subjected to symmetrical groove processing at both axial ends.

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