Single-channel complete cleaning type detachable spiral plate heat exchanger

Abstract

The utility model relates to a single-channel complete cleaning type detachable spiral plate heat exchanger. Comprising a spiral plate body, flanges, a first sealing gasket and an end cover, the flanges are welded to the two sides of the spiral plate body, the first sealing gasket is arranged between the spiral plate body and the end cover, the end cover and the flanges are connected through clamping bolts, the spiral plate body is provided with a first medium inlet pipe and a second medium outlet pipe, and the end cover is provided with a second medium inlet pipe. A penetrating hole for the first medium outlet pipe to penetrate through is formed in the other end cover, and a second sealing device is arranged between the first medium outlet pipe and the penetrating hole; the two ends of the medium channel of the first medium in the spiral plate body are sealed in a welded mode, and the two ends of the medium channel of the second medium in the spiral plate body are open. One side channel is in a totally-closed mode, and the other side channel is in a totally-open mode. Due to the fact that the channel on one side is fully open, namely the two ends are open, dead-corner-free comprehensive cleaning can be carried out when equipment scaling is serious, and the heat transfer capacity of the equipment is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral plate heat exchangers, in particular to a single-channel fully cleanable detachable spiral plate heat exchanger. Background Art

[0002] At present, environmental wastewater, sludge treatment, renewable energy, food, pharmaceutical, coking, agrochemical, fine chemical and other industries make extensive use of spiral plate heat exchangers. However, the existing detachable spiral plate heat exchangers have many disadvantages during use, mainly manifested in one way: 1. Only one end can be opened and the other end is welded. When cleaning, high-pressure water is only injected from the open side and discharged from the open side, and there will be cleaning dirt at the welding end; 2. When the width of the spiral plate heat exchanger is large, the high-pressure cleaning water cannot reach the welding end, and there is a dead corner at the welding end; 3. The process side that needs to be cleaned frequently cannot be thoroughly cleaned and the cleaning liquid cannot be completely drained, which affects its heat transfer performance and medium pollution; 4. Another detachable spiral plate heat exchanger, such as Figure 5 As shown, on the left cover 1 ， Sealing hole 2 ， With medium Ⅰ inlet flange 3 ， A sealing mechanism is arranged between the two, and the sealing mechanism includes a sealing mechanism arranged in sequence on the medium I inlet flange 3 ， The retaining ring 4 ， 、Sealing ring 5 ， 、Bushing 6 ， And clamping flange 7 ， , the clamping flange 7 ， By tightening the bolt 8 provided thereon ， With left cover 1 ， Connect and fix, the medium I inlet flange 3 ， Upper flange 9 ， With flange connection 10 ， The above structure is connected by threaded connection. The medium I inlet flange 3 on the closed side ， The seal is sealed by stuffing box. Due to the limitation of the material and structure of the sealing stuffing, this sealing structure not only has weak sealing performance and is prone to leakage, but also reduces the pressure bearing capacity of the equipment and the equipment cost is also high. Utility Model Content

[0003] The purpose of the utility model is to provide a single-channel fully cleanable detachable spiral plate heat exchanger, which overcomes the disadvantages of the original spiral plate heat exchanger, ensures convenient cleaning under high pressure and high sealing performance, makes cleaning more thorough, and makes dirt removal more convenient, thereby greatly improving its heat transfer performance.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A single-channel fully cleanable detachable spiral plate heat exchanger, comprising a spiral plate body, a flange, a first sealing gasket and two end covers, flanges are welded on both sides of the spiral plate body, the first sealing gasket is placed between the spiral plate body and the end covers, the end covers and the flanges are connected by clamping bolts, a first medium inlet pipe and a second medium outlet pipe are arranged on the spiral plate body, the second medium inlet pipe is arranged on one end cover, a through hole for the first medium outlet pipe to pass through is opened on the other end cover, and two sealing devices are arranged between the first medium outlet pipe and the through hole;

[0006] The spiral plate body is composed of two spiral plates to form two spiral media channels, both ends of the media channel of the first medium are welded and closed, and both ends of the media channel of the second medium are open, one end of the first medium outlet pipe is connected to a blocking plate, and the blocking plate is welded and connected to the inner end of the spiral plate, the two-stage sealing device includes a sealing plate, a ring plate, and a second sealing gasket, a ring plate is provided between the outer peripheral spiral plate body through the hole and the end cover, a second sealing gasket is provided between the ring plate and the end cover, the ring plate and the end cover are connected by bolts, and a sealing plate is provided between the ring plate and the blocking plate.

[0007] The utility model has the following advantages and positive effects:

[0008] 1. The utility model utilizes the original detachable spiral plate heat exchanger structure, upgrades the structure on the main body of the spiral, and designs a fully closed channel on one side and a fully open channel on the other side. Since the channel on one side is fully open, that is, both ends are open, it is conducive to full cleaning without dead angles when the equipment is severely scaled, greatly improving the heat transfer capacity of the equipment; the residual fluid after cleaning is more conducive to complete drainage, avoiding equipment damage and fluid pollution due to incomplete drainage.

[0009] 2. The utility model is more convenient and thorough in cleaning because one side channel is fully open, so the size of the spiral plate body is not limited, making the design size range of the spiral plate wider.

[0010] 3. The utility model uses a double-channel seal at the first medium outlet pipe on the closed channel side, which eliminates the limitation of the filler material, strengthens the sealing performance here, and improves the pressure bearing capacity under sealing. At the same time, under the same pressure and sealing performance, the equipment cost is lower.

[0011] 4. Since the utility model is an upgrade of the spiral plate body structure, the utility model can be designed as a horizontal structure or a vertical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0013] Figure 1 This is the front view of the single-channel fully cleanable detachable spiral plate heat exchanger of this application;

[0014] Figure 2 This is a side view of a single-channel fully cleanable detachable spiral plate heat exchanger of the present application;

[0015] Figure 3 This is an enlarged view of two channels of the single-channel fully cleanable detachable spiral plate heat exchanger of this application;

[0016] Figure 4 This is an enlarged view of the first medium outlet pipe of the single-channel fully cleanable detachable spiral plate heat exchanger of this application.

[0017] Figure 5 The present invention is a schematic diagram of the sealing structure at the medium I inlet flange of the spiral plate heat exchanger in the prior art.

[0018] Reference numerals:

[0019] Spiral plate body 1; flange 2; first sealing gasket 3; two end covers 4; clamping bolts 5; first medium inlet pipe 6; second medium outlet pipe 7; second medium inlet pipe 8; through hole 9; first medium outlet pipe 10; two-way sealing device 11; exhaust pipe 12; drain pipe 13; center partition plate 14; sealing channel 15; open channel 16; blocking plate 17; sealing plate 18; ring plate 19; second sealing gasket 20. DETAILED DESCRIPTION

[0020] In order to overcome the above-mentioned defects of the prior art, the equipment can be thoroughly and completely cleaned during cleaning and maintenance, so that there is no dead corner of residual liquid in the equipment, and the equipment is more efficient during operation. The present application provides a detachable spiral plate heat exchanger that needs to be thoroughly cleaned on the side of non-clean or high-viscosity fluid. This form of spiral plate heat exchanger overcomes the disadvantages of the original spiral plate, ensures convenient cleaning under high pressure and high sealing performance, more thorough cleaning, and more convenient dirt removal, thereby greatly improving its heat transfer performance. Reduce heat source waste and equipment investment, and thus achieve energy-saving operation. Specifically, the structure of the existing detachable spiral plate heat exchanger is partially improved, and the original cleaning method that can only be realized on one side and one end is upgraded to a structural method in which both ends of the single-side channel are completely open, thereby achieving complete cleaning of the open side of the equipment. It is suitable for the operation and cleaning of non-clean media, easy to scale and high-viscosity fluids.

[0021] The application is described in detail below with reference to the accompanying drawings:

[0022] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings. It should be noted that in the description of the present invention, the directions or positional relationships indicated by the terms "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] The spiral plate heat exchanger of the present application is a single-channel fully cleanable detachable spiral plate heat exchanger, and two sealing structures are provided at the first medium outlet pipe on the sealing side to prevent leakage.

[0024] like Figure 1 , 2 As shown, the spiral plate heat exchanger of the present application includes a spiral plate body 1, a flange 2, a first sealing gasket 3 and two end covers 4. The spiral plate body 1 is welded with flanges 2 at both ends, and the first sealing gasket 3 is placed between the spiral plate body 1 and the end cover 4. The end cover 4 and the flange 2 are connected by clamping bolts 5 and clamped by the clamping bolts 5 to form a closed pressure-bearing device. The spiral plate body 1 is provided with a first medium inlet pipe 6 and a second medium outlet pipe 7, and one end cover 4 is provided with a second medium inlet pipe 8. The other end cover 4 is provided with a through hole 9 for the first medium outlet pipe to pass through, and two sealing devices 11 are provided between the first medium outlet pipe 10 and the through hole 9. The left end cover 4 is provided with an exhaust pipe 12 and a drain pipe 13, and the right end cover 4 is provided with a drain pipe 13.

[0025] like Figure 2 , 3As shown, the spiral plate body 1 is composed of two spiral plates to form two spiral medium channels, and the spiral ends of the two spiral plates are separated by a central partition 14. The two ends of the medium channel of the first medium are welded and closed, that is, sealed channels 15, and the two ends of the medium channel of the second medium are open, that is, open channels 16. The two ends of the medium channel open at both ends are sealed by the first sealing gasket 3. When in use, the clean fluid goes through the closed channel, and the unclean fluid or high-viscosity fluid goes through the open channel. The open side channel is cleaned in time according to the blockage situation. Since high-pressure water can be injected from one end of the spiral plate for cleaning and discharged from the other end, it effectively avoids the state of incomplete cleaning of the equipment and incomplete or incomplete drainage of the residual cleaning liquid.

[0026] like Figure 4 As shown, one end of the first medium outlet pipe 10 of the sealing channel is connected to the plugging plate 17, and the plugging plate 17 is welded to the inner end of the spiral plate. A hole is opened on the plugging plate. One end of the first medium outlet pipe 10 is connected to the hole on the plugging plate 17, and the other end passes through the through hole 9 on the end cover 4. The two-way sealing device 11 includes a sealing plate 18, a ring plate 19, and a second sealing gasket 20. A ring plate 19 is provided between the spiral plate body 1 on the periphery of the through hole 9 and the end cover 4, and a second sealing gasket 20 is provided between the ring plate 19 and the end cover 4. The ring plate 19 and the end cover 4 are connected by bolts, and an annular sealing plate 18 is provided between the ring plate 19 and the plugging plate 17. The sealing structure at the first medium outlet pipe 10 of the present application is formed by two seals of the first sealing gasket 3 and the second sealing gasket 20 to form a closed side sealing cavity.

[0027] like Figure 1-4 The spiral plate body contains two channels, one of which is fully closed at both ends, and the other is fully open at both ends. The open channel body is sealed by the first sealing gasket, and the end covers and clamping bolts on both sides form an overall sealing structure, which constitutes a single-side channel opening as a whole, realizing a single-channel fully cleanable detachable spiral plate heat exchanger. At the same time, the first medium outlet pipe at the axis of the closed channel side is sealed by a double-channel seal, that is, using Figure 4 The structure completely isolates the media in the channels on both sides through the second sealing gasket, completely preventing the two media from mixing.

[0028] When the first medium enters the spiral plate body from the first medium inlet pipe, and the second medium enters the spiral plate body from the second medium inlet pipe, the two media exchange heat, one medium is cooled, and the other medium is heated. In the design process, the clean fluid goes through the welding channel, and the unclean fluid goes through the open channel. During the heat exchange process, due to the influence of temperature and fluid, more and more dirt will form on the surface of the spiral plate. As the scale layer thickens, the heat transfer capacity decreases significantly. In another form, due to the uncleanness of the fluid, impurities will accumulate and clog in the flow channel, which will also seriously affect the heat exchange capacity. At this time, the utility model equipment is used to disassemble and flush the machine, and the channel is flushed with high-pressure water from one side. The flushed impurities and scale layer are removed from the other side, thereby keeping the surface of the spiral plate clean and clean, and at the same time, the residual cleaning liquid is completely discharged, which greatly improves the heat exchange efficiency while avoiding medium contamination.

[0029] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above and does not deviate from the technical solution of the present invention, and designs a structure and implementation similar to the technical solution based on the above implementation examples without creativity, they shall all fall within the protection scope of the present invention.

Claims

1. A single-channel fully cleanable detachable spiral plate heat exchanger, characterized in that: It includes a spiral plate body, a flange, a first sealing gasket and two end covers, the spiral plate body is welded with flanges on both sides, the first sealing gasket is placed between the spiral plate body and the end covers, the end covers and the flanges are connected by clamping bolts, the spiral plate body is provided with a first medium inlet pipe and a second medium outlet pipe, one end cover is provided with the second medium inlet pipe, the other end cover is provided with a through hole for the first medium outlet pipe to pass through, and two sealing devices are provided between the first medium outlet pipe and the through hole; The spiral plate body is composed of two spiral plates to form two spiral media channels, both ends of the media channel of the first medium are welded and closed, and both ends of the media channel of the second medium are open, the inner end of the first medium outlet pipe is connected to a blocking plate, and the blocking plate is welded and connected to the inner end of the spiral plate, the two-stage sealing device includes a sealing plate, a ring plate, and a second sealing gasket, a ring plate is provided between the outer peripheral spiral plate body through the hole and the end cover, a second sealing gasket is provided between the ring plate and the end cover, the ring plate and the end cover are connected by bolts, and a sealing plate is provided between the ring plate and the blocking plate.

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