A heat exchanger for chemical production

Abstract

The present invention relates to the field of heat exchange technology, and more specifically, to a heat exchanger for chemical production, comprising a fixed pressure plate having two threaded holes extending therethrough, two first circular grooves formed on one side of the fixed pressure plate, the central axis of the first circular grooves coinciding with the central axis of the threaded holes, an upper guide rod being threadedly connected to the top of the fixed pressure plate via bolts, and a lower guide rod being threadedly connected to the bottom of the fixed pressure plate via bolts. By first allowing cold and hot fluids to exchange heat between the plates, then allowing the cold fluid between the plates to exchange heat with the hot fluid in a first L-shaped heat flow pipe, and finally allowing the cold and hot fluids to exchange heat between the pipes, the heat exchange efficiency between the fluids is improved, and the time required for the fluids to reach the target temperature is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, in particular to a heat exchanger for chemical production. Background Art

[0002] A heat exchanger is a device used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements. It is an industrial application of convective heat transfer and heat conduction. Heat exchangers can be divided into tubular heat exchangers and plate heat exchangers based on the shape and structure of the heat transfer surface. Plate heat exchangers are widely used in the chemical industry due to their adaptability, compact structure, small size, easy disassembly and repair, low fouling, and low cost. A plate heat exchanger is a heat exchanger made by pressing thin metal plates into heat exchange plates with a certain corrugated shape, sealing them with gaskets on all sides, then stacking them and fastening them with plywood and bolts. Thin rectangular channels are formed between adjacent plates, and the four corner holes of the plates and gaskets form fluid distribution pipes and collection pipes. At the same time, the hot and cold fluids are reasonably separated, flowing in the flow channels on both sides of each plate, respectively, to exchange heat through the plates.

[0003] At present, the heat exchangers used in chemical production on the market are mainly energy-saving devices that realize heat transfer between two or more fluids at different temperatures, so that the fluid temperature reaches the standard specified by the process and meets the needs of subsequent production processes. They are one of the main devices for improving energy utilization. Their heat transfer efficiency directly affects the time it takes for the fluid to reach the required temperature, thereby affecting production efficiency and energy utilization. With the continuous development of the chemical industry, its production efficiency is also gradually improving, and the demand for the working efficiency of heat exchangers is growing rapidly. Therefore, the present invention provides a plate heat exchanger that can heat up or cool down the fluid faster by improving its heat transfer efficiency, thereby shortening the time required for heat exchange, thereby meeting the ever-increasing production efficiency demand.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides a heat exchanger for chemical production.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a heat exchanger for chemical production, including a fixed pressing plate, the fixed pressing plate having two threaded holes passing through it, two first circular grooves being formed on one side of the fixed pressing plate, the central axis of the first circular groove coincides with the central axis of the threaded hole, the top of the fixed pressing plate is connected to an upper guide rod by a bolt thread, the bottom of the fixed pressing plate is connected to a lower guide rod by a bolt thread, a movable pressing plate is slidably connected between the upper guide rod and the lower guide rod, the ends of the upper guide rod and the lower guide rod away from the fixed pressing plate are connected to a pillar by a bolt thread, and a plurality of plates are provided between the fixed pressing plate and the movable pressing plate;

[0007] The top of one side of the plate and the bottom of the other side are both provided with semicircular holes, the top of the plate and the movable pressing plate are both provided with rectangular slots, the rectangular slots are slidably connected to the upper guide rod, the bottom of the plate and the movable pressing plate are both provided with semicircular slots, the semicircular slots are slidably connected to the lower guide rod, the plate includes plate A, plate B, plate C and plate D, the A and B plates are alternately placed between plate C and plate D, the C plate passes through two circular holes, the central axis of the circular holes coincides with the central axis of the threaded hole, the two circular holes are both provided with a first hollow column at one end away from plate A, the first hollow column is fixedly connected to plate C, the first hollow column is plugged into the first circular groove, and two second circular grooves are provided on the side of plate C close to plate A. The central axis of one of the two second circular grooves coincides with the central axis of the circular hole near the semicircular notch, and the two second circular grooves are located on the same side of the C plate, and a first strip groove is opened on the side of the C plate close to the A plate, and corner holes are passed through the four corners of the A plate and the B plate, and a first convex strip is fixedly connected to the side of the A plate close to the C plate, and the first convex strip is plugged into the first strip groove, and a second hollow column is provided at one end of the two corner holes on the outer side of the first convex strip close to the C plate, and the second hollow column is fixedly connected to the A plate, and the second hollow column is plugged into the second circular groove, and two first circular grooves are opened on the side of the A plate away from the C plate, and the central axis of the first circular groove coincides with the central axis of the two corner holes on the inner side of the first convex strip, and the side of the A plate away from the C plate A second strip groove is opened, and a second convex strip is fixedly connected to the side of the B plate close to the C plate, and the second convex strip is plugged into the second strip groove. The two corner holes on the outer side of the second convex strip are close to one end of the C plate. A third hollow column is fixedly connected to the B plate, and the third hollow column is plugged into the first circular groove. Two second circular grooves are opened on the side of the B plate away from the C plate, and the central axis of the second circular groove coincides with the central axis of the two corner holes on the inner side of the second convex strip. The second circular groove is plugged into the second hollow column on the adjacent A plate. A third strip groove is opened on the side of the B plate away from the C plate, and the third strip groove is plugged into the first convex strip on the adjacent A plate. The D plate is fixedly connected to the third convex strip on the side close to the C plate, and the third convex strip is plugged into the adjacent A plate The second strip groove on the D plate is plugged in, and the D plate passes through two circular holes, the central axis of one of the two circular holes coincides with the central axis of the second circular groove close to the rectangular notch, and the central axis of the other of the two circular holes coincides with the central axis of the first circular groove close to the semicircular notch. The D plate is fixedly connected to a cylindrical boss on one side close to the C plate, and the cylindrical boss is plugged into the first circular groove on the adjacent A plate. The D plate is fixedly connected to a fourth hollow column on one side close to the C plate, and the fourth hollow column is plugged into the first circular groove on the adjacent A plate close to the semicircular notch. Two third circular grooves are provided on a side of the D plate away from the C plate, and the central axis of the third circular groove coincides with the central axis of the circular hole. The side of the D plate away from the C plate is tightly fitted with the movable pressing plate;

[0008] The first L-shaped heat flow tube is slidably connected in the semicircular hole near the upper guide rod, and a first detachable connecting piece is provided between one end of the first L-shaped heat flow tube near the fixed pressing plate and the threaded hole, and the first L-shaped cold flow tube is fixedly connected in the first L-shaped heat flow tube, and one end of the first L-shaped cold flow tube near the fixed pressing plate passes through the first L-shaped heat flow tube, and a second detachable connecting piece is provided between the other end of the first L-shaped cold flow tube and the third circular groove; the second L-shaped heat flow tube is slidably connected in the semicircular hole near the lower guide rod, and a third detachable connecting piece is provided between one end of the second L-shaped heat flow tube near the D plate and the third circular groove, the second L-shaped cold flow tube is fixedly connected in the second L-shaped heat flow tube, and one end of the second L-shaped cold flow tube near the movable pressing plate passes through the second L-shaped heat flow tube, and a fourth detachable connecting piece is provided between the other end of the second L-shaped cold flow tube and the threaded hole.

[0009] Specifically, the second detachable connecting member includes a first boss-shaped shaft ring threadedly connected to one end of the first L-shaped cold flow tube close to the D plate, a first seat ring is slidably connected inside the first boss-shaped shaft ring, and a first annular groove is opened on one side of the first boss-shaped shaft ring close to the D plate.

[0010] Specifically, the first detachable connecting member includes a first flange that is threadedly connected to one end of the first L-shaped heat flow pipe close to the fixed pressing plate, the first flange is threadedly connected to the second flange through bolts, the second flange is internally threadedly connected to a first hollow threaded cylinder, and the end of the first hollow threaded cylinder close to the fixed pressing plate is threadedly connected to a threaded hole close to the upper guide rod.

[0011] Specifically, the third detachable connecting member includes a second boss-shaped shaft ring threadedly connected to one end of the second L-shaped heat flow tube close to the D plate, a second seat ring is slidably connected inside the second boss-shaped shaft ring, a second annular groove is opened on one side of the second boss-shaped shaft ring close to the D plate, and a plurality of balls are rollingly connected in the first annular groove and the second annular groove.

[0012] Specifically, the fourth detachable connecting member includes a third flange that is threadedly connected to one end of the second L-shaped cold flow tube near the fixed pressing plate, the third flange is threadedly connected to the fourth flange through bolts, the fourth flange is internally threaded with a second hollow threaded cylinder, and the second hollow threaded cylinder is threadedly connected to one end of the fixed pressing plate near the threaded hole near the lower guide rod.

[0013] Specifically, a first clamping stud is placed in the middle of both sides of the fixed clamping plate and the movable clamping plate, a second clamping stud is placed at the top of one side of the fixed clamping plate and the movable clamping plate and the bottom of the other side, and the first clamping stud and the second clamping stud are both threadedly connected with a first nut at one end close to the pillar.

[0014] Specifically, the outer walls on both sides of the plate are fixedly connected to two long plates, and a rectangular hole is formed between the two long plates. The rectangular holes close to the fixed pressure plate are slidably connected with a first screw rod, and one end of the first screw rod close to the fixed pressure plate is threadedly connected to a second nut, and the other end of the first screw rod is fixedly connected to the first rectangular plate, and one side of the first rectangular plate close to the fixed pressure plate is tightly fitted with one side of the adjacent long plate; the rectangular holes close to the movable pressure plate are slidably connected with a second screw rod, and one end of the second screw rod close to the movable pressure plate is threadedly connected to a third nut, and the other end of the second screw rod is fixedly connected to the second rectangular plate, and one side of the second rectangular plate close to the movable pressure plate is tightly fitted with one side of the adjacent long plate, and there is a plate between the first rectangular plate and the second rectangular plate.

[0015] Specifically, the thickness of the first convex strip, the second convex strip and the third convex strip are 1.5 times the depth of the first strip groove, the depth of the second strip groove and the third strip groove are equal to the depth of the first strip groove, the thickness of the second hollow column, the third hollow column and the fourth hollow column are equal to the thickness of the first convex strip, the depth of the first circular groove and the second circular groove are equal to the depth of the first strip groove, and the thickness of the first rectangular plate and the second rectangular plate are 0.5 times the thickness of the first convex strip.

[0016] Specifically, the side of the A plate fixedly connected to the first convex strip has a plurality of first drainage grooves, and the side of the B plate fixedly connected to the second convex strip and the side of the D plate fixedly connected to the third convex strip both have a plurality of second drainage grooves.

[0017] Specifically, rubber sealing strips are adhered in the semicircular holes, rubber gaskets are adhered in the first circular groove, the second circular groove, the first circular groove, the second circular groove and the third circular groove, and rubber strips are adhered in the first strip groove, the second strip groove and the third strip groove.

[0018] Specifically, the diameter of the first L-shaped cold flow tube is half the diameter of the first L-shaped hot flow tube, and the diameter of the second L-shaped cold flow tube is half the diameter of the second L-shaped hot flow tube.

[0019] Beneficial effects of the present invention:

[0020] (1) The heat exchanger for chemical production described in the present invention improves the heat exchange efficiency between the fluids and reduces the time required for the fluids to reach the target temperature by first allowing the cold and hot fluids to exchange heat between the plates, then allowing the cold fluid between the plates to exchange heat with the hot fluid in the first L-shaped heat flow tube, and then allowing the cold and hot fluids to exchange heat between the tubes.

[0021] (2) The heat exchanger for chemical production described in the present invention replaces the first clamping stud with a movable clamping device, so that only the plate to be replaced is in a loose state, and the remaining plates are still in a clamped state, thereby completing the replacement of the plates. There is no need to loosen or remove the remaining plates before replacing them. This not only reduces the time required for replacing the plates and reduces manual labor, but also avoids environmental pollution caused by leakage of residual chemical fluids between the remaining plates, and also reduces the workload of subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction to the drawings required for use in the embodiments will be given below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0024] Figure 2 A schematic structural diagram of the clamping device provided by the present invention;

[0025] Figure 3 A first perspective view of an exploded view of a plate provided by the present invention;

[0026] Figure 4 A second perspective view of an exploded view of a plate provided by the present invention;

[0027] Figure 5 A partial cross-sectional view from a first perspective provided by the present invention;

[0028] Figure 6 A partial cross-sectional view from a second viewing angle provided by the present invention;

[0029] Figure 7 The present invention provides Figure 5 A magnified view of the E-section structure;

[0030] Figure 8 The present invention provides Figure 5 A magnified view of the F part structure;

[0031] Figure 9 The present invention provides Figure 6 A magnified view of the G-section structure;

[0032] Figure 10 The present invention provides Figure 6 A magnified view of the H-section structure;

[0033] Figure 11 A schematic diagram of the local structure provided by the present invention;

[0034] Figure 12 A first perspective view of the fluid flow direction provided by the present invention;

[0035] Figure 13 This is a second perspective view of the fluid flow direction provided by the present invention.

[0036] In the figure: 1. Fixed pressing plate, 2. Threaded hole, 3. First circular groove, 4. Upper guide rod, 5. Lower guide rod, 6. Movable pressing plate, 7. Pillar, 8. Plate, 9. Semicircular hole, 10. Rectangular notch, 11. Semicircular notch, 12. Plate A, 13. Plate B, 14. Plate C, 15. Plate D, 16. Circular hole, 17. First hollow column, 18. Second circular groove, 19. First strip groove, 20. Corner hole, 21. First ridge , 22, second hollow column, 23, first circular groove, 24, second strip groove, 25, second convex strip, 26, third hollow column, 27, second circular groove, 28, third strip groove, 29, third convex strip, 30, circular hole, 31, cylindrical boss, 32, fourth hollow column, 33, third circular groove, 34, first L-shaped hot flow pipe, 35, first detachable connector, 36, first L-shaped cold flow pipe, 37, second detachable connector, 38 , second L-shaped heat flow tube, 39, third detachable connector, 40, second L-shaped cold flow tube, 41, fourth detachable connector, 42, first boss-shaped shaft ring, 43, first seat ring, 44, first annular groove, 45, first flange, 46, second flange, 47, first hollow threaded cylinder, 48, second boss-shaped shaft ring, 49, second seat ring, 50, second annular groove, 51, ball, 52, third flange, 53, Fourth flange, 54, second hollow threaded cylinder, 55, first clamping stud, 56, second clamping stud, 57, first nut, 58, long plate, 59, rectangular hole, 60, first screw rod, 61, second nut, 62, first rectangular plate, 63, second screw rod, 64, third nut, 65, second rectangular plate, 66, first drainage groove, 67, second drainage groove, 68, rubber sealing strip, 69, rubber gasket, 70, rubber strip. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0038] like Figures 1-13As shown, a heat exchanger for chemical production described in the present invention includes a fixed pressing plate 1, the fixed pressing plate 1 is penetrated by two threaded holes 2, and two first circular grooves 3 are opened on one side of the fixed pressing plate 1, the central axis of the first circular groove 3 coincides with the central axis of the threaded hole 2, the top of the fixed pressing plate 1 is connected to an upper guide rod 4 by a bolt thread, and the bottom of the fixed pressing plate 1 is connected to a lower guide rod 5 by a bolt thread, and a movable pressing plate 6 is slidably connected between the upper guide rod 4 and the lower guide rod 5, and the ends of the upper guide rod 4 and the lower guide rod 5 away from the fixed pressing plate 1 are connected to a pillar 7 by a bolt thread, and a plurality of plates 8 are provided between the fixed pressing plate 1 and the movable pressing plate 6;

[0039] The top of one side of the plate 8 and the bottom of the other side are both provided with semicircular holes 9, the top of the plate 8 and the movable pressing plate 6 are both provided with rectangular notches 10, the rectangular notches 10 are slidably connected to the upper guide rod 4, the bottom of the plate 8 and the movable pressing plate 6 are both provided with semicircular notches 11, the semicircular notches 11 are slidably connected to the lower guide rod 5, the plate 8 includes an A plate 12, a B plate 13, a C plate 14 and a D plate 15, the A plate 12 and the B plate 13 are alternately placed between the C plate 14 and the D plate 15, the C plate 14 is penetrated by two circular holes 16, the central axis of the circular hole 16 coincides with the central axis of the threaded hole 2, the two circular holes 16 are each provided with a first hollow column 17 at one end away from the A plate 12, the first hollow column 17 and The C plate 14 is fixedly connected, the first hollow column 17 is plugged into the first circular groove 3, and two second circular grooves 18 are provided on the side of the C plate 14 close to the A plate 12. The central axis of one of the two second circular grooves 18 coincides with the central axis of the circular hole 16 close to the semicircular notch 11, and the two second circular grooves 18 are located on the same side of the C plate 14. A first strip groove 19 is provided on the side of the C plate 14 close to the A plate 12. Corner holes 20 are passed through the four corners of the A plate 12 and the B plate 13. A first ridge 21 is fixedly connected to the side of the A plate 12 close to the C plate 14. The first ridge 21 is plugged into the first strip groove 19, and the two corner holes 20 on the outer side of the first ridge 21 are each provided with a second hollow column 22 near the end of the C plate 14. , the second hollow column 22 is fixedly connected to the A plate 12, and the second hollow column 22 is plugged into the second circular groove 18. The A plate 12 has two first circular grooves 23 on one side away from the C plate 14, and the central axis of the first circular groove 23 coincides with the central axis of the two corner holes 20 on the inner side of the first ridge 21. The A plate 12 has a second strip groove 24 on one side away from the C plate 14, and the B plate 13 is fixedly connected to a second ridge 25 on one side close to the C plate 14. The second ridge 25 is plugged into the second strip groove 24, and the two corner holes 20 on the outer side of the second ridge 25 are both provided with a third hollow column 26 at one end close to the C plate 14. The third hollow column 26 is fixedly connected to the B plate 13, and the third hollow column 26 is plugged into the first circular groove 23. The B plate 13 has two second circular grooves 27 on one side away from the C plate 14, and the central axis of the second circular groove 27 coincides with the central axis of the two corner holes 20 on the inner side of the second ridge 25. The second circular groove 27 is plugged into the second hollow column 22 on the adjacent A plate 12. The B plate 13 has a third strip groove 28 on one side away from the C plate 14, and the third strip groove 28 is plugged into the first ridge 21 on the adjacent A plate 12. The D plate 15 is fixedly connected to a third ridge 29 on one side close to the C plate 14, and the third ridge 29 is plugged into the second strip groove 24 on the adjacent A plate 12. The D plate 15 has two circular holes 30 passing through it, and the central axis of one of the two circular holes 30 coincides with the central axis of the second circular groove 18 close to the rectangular notch 10.The central axis of the other of the two circular holes 30 coincides with the central axis of the first circular groove 23 near the semicircular notch 11; the D plate 15 is fixedly connected to a surface close to the C plate 14 with a cylindrical boss 31, and the cylindrical boss 31 is plugged into the first circular groove 23 on the adjacent A plate 12; the D plate 15 is fixedly connected to a surface close to the C plate 14 with a fourth hollow column 32, and the fourth hollow column 32 is plugged into the first circular groove 23 near the semicircular notch 11 on the adjacent A plate 12; the D plate 15 is provided with two third circular grooves 33 on a surface away from the C plate 14; the central axis of the third circular grooves 33 coincides with the central axis of the circular hole 30; and the surface of the D plate 15 away from the C plate 14 is tightly fitted with the movable pressing plate 6;

[0040] The first L-shaped heat flow pipe 34 is slidably connected in the semicircular hole 9 close to the upper guide rod 4. A first detachable connector 35 is provided between the end of the first L-shaped heat flow pipe 34 close to the fixed pressing plate 1 and the threaded hole 2. A first L-shaped cold flow pipe 36 is fixedly connected in the first L-shaped heat flow pipe 34. The end of the first L-shaped cold flow pipe 36 close to the fixed pressing plate 1 passes through the first L-shaped heat flow pipe 34. A second detachable connector is provided between the other end of the first L-shaped cold flow pipe 36 and the third circular groove 33. A second L-shaped heat flow pipe 38 is slidably connected to the semicircular hole 9 near the lower guide rod 5, and a third detachable connector 39 is provided between the end of the second L-shaped heat flow pipe 38 near the D plate 15 and the third circular groove 33. A second L-shaped cold flow pipe 40 is fixedly connected to the second L-shaped heat flow pipe 38, and one end of the second L-shaped cold flow pipe 40 near the movable pressing plate 6 passes through the second L-shaped heat flow pipe 38, and the other end of the second L-shaped cold flow pipe 40 is between the threaded hole 2 A fourth detachable connector 41 is provided. When the first L-shaped heat flow tube 34 and the second L-shaped cold flow tube 40 are both connected to the fixed pressing plate 1, and the first L-shaped cold flow tube 36 and the second L-shaped heat flow tube 38 are both connected to the D plate 15, the plate 8 is already in a clamped state, and a thin rectangular channel is formed between each plate 8. The hot fluid flows from the first L-shaped heat flow tube 34, passes through the surface of the A plate 12, flows into the second L-shaped heat flow tube 38, and finally flows out; at the same time, the cold fluid flows from the second L-shaped cold flow tube 40 The hot fluid flows into the first L-shaped cold flow tube 36 after passing through the surface of the B plate 13, and finally flows out. In this process, the cold and hot fluids first exchange heat between the plates 8, and then the cold fluid will exchange heat again with the hot fluid that has just flowed into the first L-shaped heat flow tube 34. The hot fluid will exchange heat again with the cold fluid that has just flowed into the first L-shaped cold flow tube 36. When the cold and hot fluids exchange heat between the plates 8, they will also exchange heat with the fluids in the first L-shaped heat flow tube 34 and the second L-shaped heat flow tube 38.

[0041] Specifically, the second detachable connecting member 37 includes a first boss-shaped shaft ring 42 threadedly connected to one end of the first L-shaped cold flow tube 36 close to the D plate 15, and a first seat ring 43 is slidably connected inside the first boss-shaped shaft ring 42. A first annular groove 44 is provided on one side of the first boss-shaped shaft ring 42 close to the D plate 15. By screwing the first boss-shaped shaft ring 42 to push the first seat ring 43, the first seat ring 43 is plugged into the third circular groove 33 close to the upper guide rod 4 and is in a tightened state. At this time, one end of the first L-shaped cold flow tube 36 is tightly connected to the D plate 15.

[0042] Specifically, the first detachable connecting member 35 includes a first flange 45 threadedly connected to one end of the first L-shaped heat flow pipe 34 near the fixed pressing plate 1, the first flange 45 is threadedly connected to the second flange 46 by bolts, and the second flange 46 is internally threadedly connected to the first hollow threaded cylinder 47, and the end of the first hollow threaded cylinder 47 near the fixed pressing plate 1 is threadedly connected to the threaded hole 2 near the upper guide rod 4. Before installing the second detachable connecting member 37, the first hollow threaded cylinder 47 is first screwed into the threaded hole 2 near the upper guide rod 4. When the first seat ring 43 is inserted into the third circular groove 33 and tightened, the first hollow threaded cylinder 47 is screwed so that one end of it is tightly fitted with one end of the first L-shaped heat flow pipe 34. Then the first flange 45 and the second flange 46 are threadedly connected with bolts. At this time, one end of the first L-shaped heat flow pipe 34 is tightly connected to the fixed pressing plate 1.

[0043] Specifically, the third detachable connector 39 includes a second boss-shaped shaft ring 48 threadedly connected to one end of the second L-shaped heat flow tube 38 close to the D-plate 15, and a second seat ring 49 is slidably connected in the second boss-shaped shaft ring 48. A second annular groove 50 is opened on the side of the second boss-shaped shaft ring 48 close to the D-plate 15, and a plurality of balls 51 are rollingly connected in the first annular groove 44 and the second annular groove 50. By twisting the second boss-shaped shaft ring 48 to push the second seat ring 49, the second seat ring 49 is plugged into the third circular groove 33 close to the lower guide rod 5 and is in a tightened state. At this time, one end of the second L-shaped heat flow tube 38 is tightly connected to the D-plate 15.

[0044] Specifically, the fourth detachable connecting piece 41 includes a third flange 52 that is threadedly connected to one end of the second L-shaped cold flow tube 40 near the fixed pressing plate 1, and the third flange 52 is threadedly connected to the fourth flange 53 by bolts. The fourth flange 53 is internally threadedly connected to a second hollow threaded cylinder 54, and the end of the second hollow threaded cylinder 54 near the fixed pressing plate 1 is threadedly connected to the threaded hole 2 near the lower guide rod 5. Before installing the third detachable connecting piece 39, the second hollow threaded cylinder 54 is first screwed into the threaded hole 2 near the lower guide rod 5. When the second seat ring 49 is inserted into the third circular groove 33 and tightened, the second hollow threaded cylinder 54 is screwed so that one end is tightly fitted with one end of the second L-shaped cold flow tube 40. Then, the third flange 52 and the fourth flange 53 are threadedly connected with bolts. At this time, one end of the second L-shaped cold flow tube 40 is tightly connected to the fixed pressing plate 1.

[0045] Specifically, a first clamping stud 55 is placed in the middle of both sides of the fixed pressing plate 1 and the movable pressing plate 6, and a second clamping stud 56 is placed on the top of one side and the bottom of the other side of the fixed pressing plate 1 and the movable pressing plate 6. The first clamping stud 55 and the second clamping stud 56 are threadedly connected to the first nut 57 at one end close to the pillar 7. The first clamping stud 55 and the second clamping stud 56 are respectively installed on both sides of the fixed pressing plate 1 and the movable pressing plate 6, and then the first nut 57 is tightened to press the plate 8 through the fixed pressing plate 1 and the movable pressing plate 6, so that the plate 8 can be better compressed and limited.

[0046] Specifically, the outer walls on both sides of the plate 8 are fixedly connected with two long plates 58, and a rectangular hole 59 is formed between the two long plates 58. The rectangular holes 59 on the side close to the fixed pressure plate 1 are slidably connected with a first screw rod 60, and one end of the first screw rod 60 close to the fixed pressure plate 1 is threadedly connected with a second nut 61, and the other end of the first screw rod 60 is fixedly connected with a first rectangular plate 62, and the side of the first rectangular plate 62 close to the fixed pressure plate 1 is tightly fitted with a side of the adjacent long plate 58; A second screw rod 63 is slidably connected to the rectangular hole 59 on one side of the movable pressing plate 6. One end of the second screw rod 63 close to the movable pressing plate 6 is threadedly connected to a third nut 64. The other end of the second screw rod 63 is fixedly connected to a second rectangular plate 65. The side of the second rectangular plate 65 close to the movable pressing plate 6 is tightly fitted with the side of the adjacent long plate 58. There is a plate 8 between the first rectangular plate 62 and the second rectangular plate 65. When one of the plates 8 is damaged or deformed and needs to be replaced, the first clamping plate 6 is first clamped. Unscrew the first nut 57 at one end of the stud 55 and remove the first clamping stud 55. Then install the first screw rod 60 and the second screw rod 63 in the rectangular holes 59 on both sides of the plate 8 respectively, so that the plate 8 to be replaced is located between the first rectangular plate 62 and the second rectangular plate 65. Then tighten the second nut 61 and the third nut 64 to press the first rectangular plate 62 toward the fixed pressing plate 1, and at the same time, press the second rectangular plate 65 toward the movable pressing plate 6. At this time, the plate 8 to be replaced is in a loose state, and then the second clamping screw is tightened. Unscrew the first nut 57 at one end of the column 56 and remove the second clamping stud 56, then remove the bolts connecting the first flange 45 and the second flange 46, the third flange 52 and the fourth flange 53, so that the first L-shaped hot flow tube 34 and the second L-shaped cold flow tube 40 are disengaged from the fixed pressing plate 1 and removed, then screw the first boss-shaped shaft ring 42 and the second boss-shaped shaft ring 48 to disengage the first L-shaped cold flow tube 36 and the second L-shaped heat flow tube 38 from the D plate 15 and remove, then remove the upper guide rod 4, and then the plate 8 can be replaced.

[0047] Specifically, the thickness of the first ridge 21, the second ridge 25 and the third ridge 29 are 1.5 times the depth of the first strip groove 19, the depth of the second strip groove 24 and the third strip groove 28 are equal to the depth of the first strip groove 19, the thickness of the second hollow column 22, the third hollow column 26 and the fourth hollow column 32 are equal to the thickness of the first ridge 21, the depth of the first circular groove 23 and the second circular groove 27 are equal to the depth of the first strip groove 19, and the thickness of the first rectangular plate 62 and the second rectangular plate 65 are 0.5 times the thickness of the first ridge 21, so that the first rectangular plate 62 and the second rectangular plate 65 can just be placed in the gap between the long plates 58.

[0048] Specifically, a surface of the A plate 12 fixedly connected to the first ridge 21 is provided with a plurality of first drainage grooves 66, and a surface of the B plate 13 fixedly connected to the second ridge 25 and a surface of the D plate 15 fixedly connected to the third ridge 29 are both provided with a plurality of second drainage grooves 67. The drainage grooves can make the fluid more evenly distributed when flowing through the plate 8 and can promote the liquid to be in a turbulent state, thereby reducing the formation of sediment or dirt.

[0049] Specifically, a rubber sealing strip 68 is adhered to the semicircular hole 9, a rubber gasket 69 is adhered to the first circular groove 3, the second circular groove 18, the first circular groove 23, the second circular groove 27 and the third circular groove 33, and a rubber strip 70 is adhered to the first strip groove 19, the second strip groove 24 and the third strip groove 28. The rubber sealing strip 68 can improve the sealing performance when the outer walls of the first L-shaped heat flow pipe 34 and the second L-shaped heat flow pipe 38 contact the semicircular hole 9. The rubber gasket 69 and the rubber strip 70 can improve the sealing performance between the plates 8 to prevent fluid leakage.

[0050] Specifically, the diameter of the first L-shaped cold flow tube 36 is half the diameter of the first L-shaped hot flow tube 34, and the diameter of the second L-shaped cold flow tube 40 is half the diameter of the second L-shaped hot flow tube 38, controlling the heat exchange area of the cold and hot fluids in the pipes.

[0051] Example 1:

[0052] The hot fluid and the cold fluid flow in from the first L-shaped heat flow tube 34 and the second L-shaped cold flow tube 40, respectively, close to the end of the support 7. The hot fluid flows from the other end of the first L-shaped heat flow tube 34 into the thin rectangular channel formed after the plate 8 is compressed, and after passing through the first drainage groove 66, it flows into the second L-shaped heat flow tube 38 from the circular hole 30 of the D plate 15 close to the lower guide rod 5, and finally flows out from the end of the second L-shaped heat flow tube 38 close to the fixed pressing plate 1; the cold fluid flows from the other end of the second L-shaped cold flow tube 40 into the thin rectangular channel formed after the plate 8 is compressed, and after passing through the second drainage groove 67, it flows into the first L-shaped cold flow tube 36 from the circular hole 30 of the D plate 15 close to the upper guide rod 4, and finally flows out from the first The L-shaped cold flow tube 36 flows out from one end near the fixed pressing plate 1. During this process, the cold and hot fluids first transfer heat between the plates 8. At the same time, since the outer wall of the first L-shaped heat flow tube 34 is tightly fitted with the semicircular hole 9 near the upper guide rod 4, the cold fluid will also exchange heat with the hot fluid in the first L-shaped heat flow tube 34. Subsequently, the cold fluid will exchange heat again with the hot fluid that has just flowed into the first L-shaped heat flow tube 34 in the first L-shaped cold flow tube 36. The hot fluid will exchange heat again with the cold fluid that has just flowed into the second L-shaped cold flow tube 40 in the second L-shaped heat flow tube 38, thereby improving the heat exchange efficiency between the two fluids and reducing the time required for the fluid to reach the target temperature.

[0053] Example 2:

[0054] When a damaged or deformed plate 8 is to be replaced, first stop the hot fluid and the cold fluid from continuing to flow into the heat exchanger, then remove the first clamping stud 55, install the first screw rod 60 and the second screw rod 63 in the rectangular holes 59 formed by the long plates 58 on both sides, and make the plate 8 to be replaced be located between the first rectangular plate 62 and the second rectangular plate 65, then tighten the second nut 61 and the third nut 64 to make the plate 8 to be replaced in a loose state, while the remaining plates 8 are still in a compressed state, then remove the second clamping stud 56, and then unscrew the bolts connecting the first flange 45 and the second flange 46, then screw the first boss-shaped shaft ring 42 to disengage and remove the first L-shaped hot flow pipe 34 and the first L-shaped cold flow pipe 36, and then connect the third flange 52 and the fourth flange. 53 is unscrewed and the second boss-shaped shaft ring 48 is screwed to disengage and remove the second L-shaped heat flow tube 38 and the second L-shaped cold flow tube 40. Finally, the upper guide rod 4 is removed to replace the plate 8. After the replacement is completed, the first L-shaped cold flow tube 36, the first L-shaped heat flow tube 34, the second L-shaped heat flow tube 38, the second L-shaped cold flow tube 40, the upper guide rod 4 and the second clamping stud 56 are installed to the original position in sequence, and then the first screw rod 60 and the second screw rod 63 are removed and replaced with the first clamping stud 55. The damaged plate 8 can be replaced without loosening or removing the remaining plates 8, thereby reducing the time required for replacing the plates 8 and reducing manual labor. At the same time, it avoids environmental pollution caused by leakage of residual chemical fluid between the remaining plates 8 and also reduces the workload during subsequent cleaning.

[0055] This embodiment specifically solves the problem in the prior art that with the continuous development of the chemical industry, its production efficiency is gradually improving, and at the same time, the demand level for the working efficiency of the heat exchanger is also growing rapidly, but the heat exchange efficiency of the heat exchanger cannot meet the gradually improving production efficiency.

[0056] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A heat exchanger for chemical production, characterized by: It comprises a fixed pressing plate (1), wherein the fixed pressing plate (1) is penetrated by two threaded holes (2), and one side of the fixed pressing plate (1) is provided with two first circular grooves (3), wherein the central axis of the first circular groove (3) coincides with the central axis of the threaded hole (2), the top of the fixed pressing plate (1) is connected to an upper guide rod (4) by a bolt thread, and the bottom of the fixed pressing plate (1) is connected to a lower guide rod (5) by a bolt thread, and a movable pressing plate (6) is slidably connected between the upper guide rod (4) and the lower guide rod (5), and the ends of the upper guide rod (4) and the lower guide rod (5) away from the fixed pressing plate (1) are connected to a pillar (7) by a bolt thread, and a plurality of plates (8) are provided between the fixed pressing plate (1) and the movable pressing plate (6); The top of one side of the plate (8) and the bottom of the other side are both provided with semicircular holes (9), the tops of the plate (8) and the movable pressing plate (6) are both provided with rectangular notches (10), the rectangular notches (10) are slidably connected to the upper guide rod (4), the bottoms of the plate (8) and the movable pressing plate (6) are both provided with semicircular notches (11), the semicircular notches (11) are slidably connected to the lower guide rod (5), the plate (8) comprises an A plate (12), a B plate (13), a C plate (14) and a D plate (15), the A plate (12) and the B plate (13) are alternately placed between the C plate (14) and the D plate (15), the C plate (14) is penetrated by two circular holes (16), the center axis of the circular hole (16) The center axis of the threaded hole (2) coincides with the center axis of the threaded hole (2), and the two circular holes (16) are each provided with a first hollow column (17) at one end away from the A plate (12), and the first hollow column (17) is fixedly connected to the C plate (14), and the first hollow column (17) is plugged into the first circular groove (3). The C plate (14) has two second circular grooves (18) on one side close to the A plate (12), and the center axis of one of the two second circular grooves (18) coincides with the center axis of the circular hole (16) close to the semicircular notch (11), and the two second circular grooves (18) are located on the same side of the C plate (14), and the C plate (14) has a first strip groove (19) on one side close to the A plate (12). The A plate (12) and the B plate The four corners of the plate (13) are penetrated by corner holes (20), the A plate (12) is fixedly connected to the side close to the C plate (14) with a first convex strip (21), the first convex strip (21) is plugged into the first strip groove (19), the two corner holes (20) outside the first convex strip (21) are each provided with a second hollow column (22) at one end close to the C plate (14), the second hollow column (22) is fixedly connected to the A plate (12), the second hollow column (22) is plugged into the second circular groove (18), the A plate (12) is provided with two first circular grooves (23) on the side away from the C plate (14), the center axis of the first circular groove (23) coincides with the center axis of the two corner holes (20) inside the first convex strip (21), the A plate (12) is provided with a second hollow column (22), the second hollow column (22) is fixedly connected to the A plate (12), the second hollow column (22) is plugged into the second circular groove (18), the A plate (12) is provided with two first circular grooves (23) on the side away from the C plate (14), the center axis of the first circular groove (23) coincides with the center axis of the two corner holes (20) inside the first convex strip (21), the A plate (1 2) A second strip groove (24) is provided on a side away from the C plate (14); a second convex strip (25) is fixedly connected to a side of the B plate (13) close to the C plate (14); the second convex strip (25) is plugged into the second strip groove (24); two corner holes (20) on the outer side of the second convex strip (25) are provided with a third hollow column (26) at one end close to the C plate (14); the third hollow column (26) is fixedly connected to the B plate (13); the third hollow column (26) is plugged into the first circular groove (23); two second circular grooves (27) are provided on a side of the B plate (13) away from the C plate (14); the central axis of the second circular groove (27) coincides with the central axis of the two corner holes (20) on the inner side of the second convex strip (25);The second circular groove (27) is plugged into the second hollow column (22) on the adjacent A plate (12); the B plate (13) has a third strip groove (28) on the side away from the C plate (14); the third strip groove (28) is plugged into the first ridge (21) on the adjacent A plate (12); the D plate (15) has a third ridge (29) fixedly connected to the side close to the C plate (14); the third ridge (29) is plugged into the second strip groove (24) on the adjacent A plate (12); the D plate (15) has two circular holes (30) running through it; the center axis of one of the two circular holes (30) coincides with the center axis of the second circular groove (18) close to the rectangular notch (10); the center axis of the other of the two circular holes (30) coincides with the center axis of the second circular groove (18) close to the semicircular notch (1 1), the central axis of the first circular groove (23) of the D plate (15) coincides, the side of the D plate (15) close to the C plate (14) is fixedly connected to a cylindrical boss (31), the cylindrical boss (31) is plugged into the first circular groove (23) on the adjacent A plate (12), the side of the D plate (15) close to the C plate (14) is fixedly connected to a fourth hollow column (32), the fourth hollow column (32) is plugged into the first circular groove (23) close to the semicircular notch (11) on the adjacent A plate (12), the side of the D plate (15) away from the C plate (14) is provided with two third circular grooves (33), the central axis of the third circular grooves (33) coincides with the central axis of the circular hole (30), and the side of the D plate (15) away from the C plate (14) is tightly fitted with the movable pressing plate (6); A first L-shaped heat flow tube (34) is slidably connected in the semicircular hole (9) near the upper guide rod (4), a first detachable connector (35) is provided between one end of the first L-shaped heat flow tube (34) near the fixed pressing plate (1) and the threaded hole (2), a first L-shaped cold flow tube (36) is fixedly connected in the first L-shaped heat flow tube (34), one end of the first L-shaped cold flow tube (36) near the fixed pressing plate (1) passes through the first L-shaped heat flow tube (34), and a second detachable connector (37) is provided between the other end of the first L-shaped cold flow tube (36) and the third circular groove (33). A second L-shaped heat flow tube (38) is slidably connected in the semicircular hole (9) near the lower guide rod (5), a third detachable connector (39) is provided between one end of the second L-shaped heat flow tube (38) near the D plate (15) and the third circular groove (33), a second L-shaped cold flow tube (40) is fixedly connected in the second L-shaped heat flow tube (38), one end of the second L-shaped cold flow tube (40) near the movable pressing plate (6) passes through the second L-shaped heat flow tube (38), and a fourth detachable connector (41) is provided between the other end of the second L-shaped cold flow tube (40) and the threaded hole (2); The second detachable connecting member (37) includes a first boss-shaped shaft ring (42) threadedly connected to one end of the first L-shaped cold flow tube (36) close to the D plate (15), a first seat ring (43) is slidably connected inside the first boss-shaped shaft ring (42), and a first annular groove (44) is formed on one side of the first boss-shaped shaft ring (42) close to the D plate (15); The first detachable connector (35) includes a first flange (45) threadedly connected to one end of the first L-shaped heat flow pipe (34) near the fixed pressing plate (1), the first flange (45) is threadedly connected to a second flange (46) via bolts, the second flange (46) is internally threadedly connected to a first hollow threaded cylinder (47), and the end of the first hollow threaded cylinder (47) near the fixed pressing plate (1) is threadedly connected to a threaded hole (2) near the upper guide rod (4); The third detachable connecting member (39) includes a second boss-shaped shaft ring (48) threadedly connected to one end of the second L-shaped heat flow pipe (38) close to the D plate (15), a second seat ring (49) is slidably connected in the second boss-shaped shaft ring (48), a second annular groove (50) is formed on one side of the second boss-shaped shaft ring (48) close to the D plate (15), and a plurality of balls (51) are rollingly connected in both the first annular groove (44) and the second annular groove (50); The fourth detachable connecting member (41) includes a third flange (52) threadedly connected to one end of the second L-shaped cold flow pipe (40) near the fixed pressing plate (1), the third flange (52) is threadedly connected to a fourth flange (53) via bolts, the fourth flange (53) is internally threadedly connected to a second hollow threaded cylinder (54), and the second hollow threaded cylinder (54) is threadedly connected to one end of the second hollow threaded cylinder (54) near the fixed pressing plate (1) and the threaded hole (2) near the lower guide rod (5); The outer walls of both sides of the plate (8) are fixedly connected with two long plates (58), and a rectangular hole (59) is formed between the two long plates (58). A first screw rod (60) is slidably connected in the rectangular hole (59) on the side close to the fixed pressing plate (1). One end of the first screw rod (60) close to the fixed pressing plate (1) is threadedly connected to a second nut (61), and the other end of the first screw rod (60) is fixedly connected to a first rectangular plate (62). One side of the first rectangular plate (62) close to the fixed pressing plate (1) is connected to the adjacent long plate (58). The second screw rod (63) is slidably connected to the rectangular hole (59) on the side close to the movable pressing plate (6), and one end of the second screw rod (63) close to the movable pressing plate (6) is threadedly connected to the third nut (64), and the other end of the second screw rod (63) is fixedly connected to the second rectangular plate (65), and the side of the second rectangular plate (65) close to the movable pressing plate (6) is tightly fitted with the side of the adjacent long plate (58), and the first rectangular plate (62) and the second rectangular plate (65) are separated by a plate (8); The diameter of the first L-shaped cold flow tube (36) is half the diameter of the first L-shaped hot flow tube (34), and the diameter of the second L-shaped cold flow tube (40) is half the diameter of the second L-shaped hot flow tube (38).

2. A heat exchanger for chemical production according to claim 1, characterized in that: A first clamping stud (55) is placed in the middle of both sides of the fixed clamping plate (1) and the movable clamping plate (6), and a second clamping stud (56) is placed on the top of one side and the bottom of the other side of the fixed clamping plate (1) and the movable clamping plate (6). The first clamping stud (55) and the second clamping stud (56) are both threadedly connected to a first nut (57) at one end close to the pillar (7).

3. A heat exchanger for chemical production according to claim 2, characterized in that: The thickness of the first convex strip (21), the second convex strip (25) and the third convex strip (29) is 1.5 times the depth of the first strip groove (19); the depth of the second strip groove (24) and the third strip groove (28) is equal to the depth of the first strip groove (19); the thickness of the second hollow column (22), the third hollow column (26) and the fourth hollow column (32) is equal to the thickness of the first convex strip (21); the depth of the first circular groove (23) and the second circular groove (27) is equal to the depth of the first strip groove (19); and the thickness of the first rectangular plate (62) and the second rectangular plate (65) is 0.5 times the thickness of the first convex strip (21).

4. A heat exchanger for chemical production according to claim 1, characterized in that: The side of the A plate (12) fixedly connected to the first convex strip (21) is provided with a plurality of first drainage grooves (66), and the side of the B plate (13) fixedly connected to the second convex strip (25) and the side of the D plate (15) fixedly connected to the third convex strip (29) are both provided with a plurality of second drainage grooves (67).

5. The heat exchanger for chemical production according to claim 1, characterized in that: A rubber sealing strip (68) is adhered to each of the semicircular holes (9), a rubber gasket (69) is adhered to each of the first circular groove (3), the second circular groove (18), the first circular groove (23), the second circular groove (27) and the third circular groove (33), and a rubber strip (70) is adhered to each of the first strip groove (19), the second strip groove (24) and the third strip groove (28).

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