Energy-saving spiral plate heat exchanger

Abstract

The application provides an energy-saving spiral plate heat exchanger, and relates to the field of energy-saving heat exchangers. The energy-saving spiral plate heat exchanger comprises a cement U-shaped channel, the cement U-shaped channel is sleeved with a metal channel, the inner side of the metal channel is slidably connected with a conical spiral body, two groups of conical caps are respectively arranged at the front and rear ends of each group of conical spiral bodies, the two groups of conical caps are respectively connected with the convex surface and the concave surface of the conical spiral body, and three groups of conical spiral plates are arranged on the inner side of the conical spiral body through welding. The low-temperature waste water in the outer fluid area enters the spiral cavity to assist the heat exchange of the two groups of media with the smallest temperature difference between the spiral plates, meanwhile, the overheat exchange of the low-temperature medium is prevented, the medium with the second highest temperature after pre-cooling enters the conical spiral body with only double channels to exchange heat with the low-temperature medium, and the problem that the temperature of the low-temperature medium in the existing heat exchanger gradually rises to an average value in the transmission process is solved.

Description

Technical Field

[0001] This invention relates to the field of energy-saving heat exchanger technology, and in particular to an energy-saving spiral plate heat exchanger. Background Technology

[0002] Spiral plate heat exchangers are high-efficiency, non-fouling, and compact heat exchangers. Internally, they consist of two sets of rolled plates forming a spiral tube. They utilize the spiral movement of two media at different temperatures to convert the medium temperature. The spiral plates, combined with the spaced columns, create strong turbulence and high heat exchange efficiency, making them applicable to multiple fields.

[0003] Existing heat exchangers have a cylindrical structure with a rectangular cross-section. The internal liquid medium flows between horizontal and vertical spiral directions. Due to the high local resistance coefficient, scale easily forms in the area with large changes in flow angle at the center of the heat exchanger. Since the flange pipes need to be welded at this location, the difficulty of scale removal is also increased. As shown in the comparative document CN201410777122.1, a cleaning mechanism is designed to remove scale and achieve energy saving. However, due to the obstruction of the spacer column in the gap between the spiral plates, it is difficult to meet the scale removal technical requirements and reduce scale from the fundamental factor of reducing local resistance. In the spiral pipeline design, the temperature of the two media tends to average during the transmission process, and the heat exchange efficiency of existing spiral plate heat exchangers still needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving spiral plate heat exchanger to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving spiral plate heat exchanger, specifically comprising a cement U-shaped channel, a plate valve installed on the inner side of the cement U-shaped channel, and a metal channel sleeved inside the cement U-shaped channel, characterized in that: the cross-section of the metal channel is U-shaped, a conical spiral body is slidably connected to the inner side of the metal channel, and two sets of conical caps are respectively installed at the front and rear ends of each set of conical spiral bodies;

[0006] Preferably, a track A is installed at the top of the metal channel, a slide table A is slidably connected to the top of the track A, a clamp is provided on the top of the slide table A, and a fastening mechanism for positioning is provided on the top of the slide table A. Two sets of tracks B are fixedly connected to the left and right sides inside the metal channel.

[0007] Preferably, the front end of the conical spiral body protrudes outward in the horizontal direction, and the rear end is concave inward. The two sets of conical caps are respectively connected to the protruding and concave surfaces of the conical spiral body. The center of the spiral plate inside the conical spiral body is S-shaped. Three sets of conical spiral plates are welded to the inner side of the conical spiral body. The inner side of the conical spiral body is divided into medium cavity A and medium cavity B by the spiral plates. The inner side of medium cavity B is divided into an outer fluid region by the spiral plates. A transition cavity A is welded to the top of the outer side of the conical spiral body. A transition cavity B is welded to the bottom of the outer side of the conical spiral body. A drainage pipe A is connected to the outside of the transition cavity A. The inside of the transition cavity A is in communication with the medium cavity A. The inside of the transition cavity B is in communication with the medium cavity B. A drainage pipe B is connected to the outside of the medium cavity B.

[0008] Preferably, the left and right sides of the conical spiral body are fixedly connected to side plates by welding, and the bottom of the side plates is connected to a slide B by bolts, and the slide B is slidably connected to the track B.

[0009] Preferably, the top of the conical spiral body is fixedly connected to two sets of lifting rings by welding. The front end of the cone cap on the front side of the conical spiral body and the rear end of the cone cap on the rear side of the conical spiral body are respectively provided with mating planes. The mating planes are provided with grooves in the horizontal direction. The cone cap is provided with a fluid groove in the horizontal direction. The fluid groove is in communication with the external fluid area. The outside of the groove is provided with an annular groove. The inside of the venting cavity is provided with a venting hole. The inside of the annular groove is provided with a sealing gasket ring by interference fit.

[0010] Preferably, a ring plate is provided at the outer edge of the cone cap, and bolt holes A are provided horizontally inside the ring plate. Four sets of screw seats A are provided at the outer edge of the ring plate, and slots A are provided at the edges of the screw seats A. Four sets of limiting beams are provided between the cone caps at the front and rear ends of each set of conical spiral bodies. Vertical surfaces are provided at the front and rear ends of the limiting beams, and through holes for installing bolts are provided on the vertical surfaces of the limiting beams.

[0011] Preferably, a sliding beam frame is fixedly connected to the top of the sliding table C, a connecting rod is fixedly connected to the bottom of the sliding beam frame, a sealing plate is fixedly connected to the horizontal end of the connecting rod, a protrusion A is integrally formed on the rear side of the sealing plate, the shape of the protrusion A corresponds to the shape of the annular groove, a protrusion B is provided on the rear side of the protrusion A, the shape of the protrusion B corresponds to the shape of the groove, and a connecting pipe is opened in the horizontal direction inside the protrusion B.

[0012] Preferably, the top of the two sets of tracks B is slidably connected to a slide table C, the top of the slide table C is fixedly connected to a screw seat B, the screw seat B is provided with a slot A, a fastening screw A is slidably connected in the horizontal direction inside the slot A, and a fastening screw B is slidably connected in the horizontal direction inside the slot B.

[0013] Preferably, the slide A is provided with a medium pipe A and a medium pipe B respectively connected by clamps. The bottom of the medium pipe A is clamped and fixed at the vertical surface of the slide beam frame by clamps. The bottom of the medium pipe A is connected to the connecting pipe by a flange. The bottom of the medium pipe B is connected to the drain pipe A by a flange.

[0014] This invention provides an energy-saving spiral plate heat exchanger, which has the following advantages:

[0015] 1. In the combined two sets of conical spiral bodies, one set of internal spiral plates can be removed from one set, and a fluid-free conical cap can be installed, eliminating the external fluid region. After the high-temperature fluid is input from the set of conical spiral bodies with the external fluid region, the low-temperature wastewater in the external fluid region can enter the spiral cavity to assist in heat exchange between the two sets of media with the second largest temperature difference between the spiral plates. This, combined with the pre-cooling of the high-temperature medium by the second-lower temperature medium, prevents excessive heat exchange and heating of the low-temperature medium. The pre-cooled second-high-temperature medium enters the conical spiral body with only two channels. The low-temperature medium enters the conical spiral body with two channels and exchanges heat with the second-high-temperature medium. The second-low-temperature medium enters the conical spiral body with the external fluid region and, together with the low-temperature wastewater, cools the high-temperature medium. This creates a state where the low-temperature medium and the second-high-temperature medium exchange heat in the conical spiral body with two channels, and the second-low-temperature medium and the high-temperature medium exchange heat in the conical spiral body with three channels. By diverting the low-temperature medium and inputting it in stages, the heat exchange efficiency is improved and energy consumption is reduced during the staged heat exchange process.

[0016] 2. Compared with existing heat exchangers with rectangular cross-sections, this invention, through its conical structural design, can increase the relative height between the inner and outer rings of the spiral while extending the length of the heat exchange medium pipeline, thereby increasing the pitch and curvature ratio and reducing the local resistance coefficient of the entire pipeline. Since v=Q / A, with the pipe diameter A unchanged, the average flow velocity (v) in the pipeline increases, reducing the relative flow resistance of the heat exchange medium. By reducing local resistance, the scale formation in the spiral plate heat exchanger is fundamentally slowed down.

[0017] 3. The drainage pipes connecting each conical spiral body are equipped with a one-way valve and a pressurizing pump through flange connections. The pressurizing pump pressurizes the low-temperature pipeline medium between each heat exchanger in batches, which can improve the heat exchange efficiency of long-path high-temperature media and reduce the impact of room temperature on low-temperature media pipelines.

[0018] 4. The external fluid regions of multiple heat exchangers are interconnected. The inclined spiral pipes are matched with the combined extended structure. The low-temperature medium input pipe can be replenished with low-temperature medium in multiple batches through the branch pipes, so as to continuously cool the high-temperature medium in the extended spiral circulation process, reduce the temperature change effect caused by the spiral flow of low-temperature medium, and greatly improve the flow rate and heat exchange efficiency of low-temperature medium.

[0019] 5. After being tightened with bolts, multiple heat exchangers can be combined into an internally connected whole. Wastewater that has been cooled and circulated by water pumps in the plant area can be introduced into the metal channel for circulation through the diversion channel. The wastewater can be used at room temperature. While the heat exchange is carried out vertically inside the traditional spiral plate, the horizontal flow of external water can be used to assist in cooling the high-temperature medium in the heat exchange.

[0020] 6. The detachable structural design facilitates quick disassembly of the heat exchanger, allowing for direct cleaning of the spiral pipes without external pipe welding in the center of the heat exchanger and areas with large changes in the horizontal flow direction angle. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0022] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the right front side structure of the conical spiral body and the conical cap in Embodiment 1 of the present invention.

[0025] Figure 2 yes Figure 1 A magnified view of part B in the diagram.

[0026] Figure 3 This is a top-view three-dimensional structural diagram of the front side of the metal channel according to Embodiment 1 of the present invention.

[0027] Figure 4 This is a three-dimensional side cross-sectional view of the metal channel according to Embodiment 1 of the present invention.

[0028] Figure 5 This is a schematic diagram showing the disassembly of the external structure of the conical spiral body in Embodiment 1 of the present invention.

[0029] Figure 6 yes Figure 5 A magnified view of part C in the diagram.

[0030] Figure 7 This is a side cross-sectional view of the conical spiral body assembly according to Embodiment 1 of the present invention.

[0031] Figure 8 yes Figure 7 A magnified view of part of D.

[0032] Figure 9 This is a schematic diagram of the external structure of the conical spiral body in Embodiment 2 of the present invention.

[0033] List of reference numerals

[0034] 1. Cement U-shaped channel; 2. Metal channel; 201. Track A; 2011. Slide A; 2012. Fastening mechanism; 202. Track B; 3. Conical spiral body; 301. Medium chamber A; 3011. Transition chamber A; 3012. Drainage pipe A; 302. Medium chamber B; 3021. Transition chamber B; 3022. Drainage pipe B; 303. External fluid area; 304. Side plate; 3041. Slide B; 305. Lifting ring; 4. Conical cap; 401. Ring plate; 4011. Bolt hole A; 402. Screw seat A ; 4021, Slot A; 403, Butt joint plane; 404, Fluid channel; 405, Groove; 4051, Drainage cavity; 4052, Annular groove; 4053, Drainage hole; 406, Sealing gasket ring; 407, Spacing beam; 5, Slide table C; 501, Slide beam frame; 502, Butt joint rod; 5021, Sealing plate; 5022, Protrusion A; 5023, Protrusion B; 5024, Butt joint pipe; 503, Screw seat B; 5031, Slot B; 6, Medium pipe A; 7, Medium pipe B; 8, Fastening screw A; 9, Fastening screw B. Detailed Implementation

[0035] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, and these should all be considered to fall within the scope of the invention.

[0036] Unless otherwise defined, the directions such as up, down, left, and right mentioned herein refer to the directions shown in this invention. Figure 1 The directions of up, down, left, and right are used as a reference, and will be explained here.

[0037] Please see Figure 1-8Embodiment 1 of the present invention: The present invention provides an energy-saving spiral plate heat exchanger, including a cement U-shaped channel 1, which is connected to the factory drainage ditch or the external river water diversion ditch. A plate valve is installed inside the cement U-shaped channel 1 to control the water inlet. A metal channel 2 is sleeved inside the cement U-shaped channel 1. The cross-section of the metal channel 2 is U-shaped. A conical spiral body 3 is slidably connected inside the metal channel 2. A filter screen can be installed inside the metal channel 2 or the cement U-shaped channel 1 as needed. After diverting the wastewater to be discharged from the external water area or factory area, its temperature can be utilized.

[0038] The conical spiral body 3 protrudes outward at its front end and is concave inward at its rear end in the horizontal direction. Two sets of conical caps 4 are installed at each end of the conical spiral body 3, respectively, with the two sets of caps 4 contacting the protruding and concave surfaces of the conical spiral body 3. The center of the spiral plate inside the conical spiral body 3 is S-shaped. Three sets of conical spiral plates are welded to the inner side of the conical spiral body 3. These three sets of spiral plates are conical in shape and are separated by the spiral plates to form a medium cavity A301 and a medium cavity B302. The inner side of the medium cavity B302 is also separated by the spiral plates to form an outer fluid region 303. Spacer columns are welded between the spiral plate surfaces of the conical spiral body 3. A transition cavity A3011 is welded to the top outer side of the conical spiral body 3, and a transition cavity B3021 is welded to the bottom outer side of the conical spiral body 3. The external connection of cavity A3011 is a drain pipe A3012. The internal connection of transition cavity A3011 is through medium cavity A301. The internal connection of transition cavity B3021 is through medium cavity B302. The external connection of medium cavity B302 is a drain pipe B3022. Through the conical structural design, the height between the inner and outer rings of the spiral can be increased while extending the length of the heat exchange medium pipeline, increasing the pitch and curvature ratio, and reducing the flow resistance of the heat exchange medium under relative conditions. The branched drain pipes connecting the various conical spiral bodies 3 are connected to the medium pipe B7 through flanges and equipped with a check valve and a pressure pump. The pressure pump and valve pipeline work together to pressurize each heat exchanger in batches and input the low temperature medium. Through the batch input of high pressure low temperature medium, the extended high temperature medium pipeline can be efficiently heat exchanged.

[0039] A track A201 is installed at the top of the metal channel 2. A sliding table A2011 is slidably connected to the top of the track A201. A clamp is installed on the top of the sliding table A2011. A fastening mechanism 2012 for positioning is installed on the top of the sliding table A2011. Two sets of tracks B202 are fixedly connected to the left and right sides inside the metal channel 2. Side plates 304 are fixedly connected to the left and right sides of the conical spiral body 3 by welding. A sliding table B3041 is bolted to the bottom of the side plates 304. The sliding table B3041 is slidably connected to the track B2011. On 202, two sets of lifting rings 305 are fixedly connected to the top of the conical spiral body 3 by welding. The front end of the conical cap 4 on the front side of the conical spiral body 3 and the rear end of the conical cap 4 on the rear side of the conical spiral body 3 are respectively provided with mating planes 403. The mating planes 403 have grooves 405 in the horizontal direction. The conical cap 4 has a fluid groove 404 in the horizontal direction, which communicates with the outer fluid area 303. The groove 405 has an annular groove 4052 on the outside. The drain cavity 4051 has a drain hole 4053 inside. The inner side of the annular groove 4052 is provided with a sealing gasket 406 through an interference fit. After the multiple heat exchangers are horizontally connected, the protruding and recessed parts of the front and rear cone caps 4 fit together. The drain hole 4053 and the drain cavity 4051 between the front and rear cone caps 4 form a passage, allowing the medium flowing in the spiral direction inside a separate conical spiral body 3 to enter the interior of another conical spiral body 3 for continued heat exchange. At the same time, the external fluid regions 303 between the multiple heat exchangers are interconnected. The spiral pipe with increased pitch fits with the combined and extended structure. The low-temperature medium input pipe can be replenished with low-temperature medium in multiple sets using branch pipes, so that it continuously cools the high-temperature medium in the extended spiral circulation process, reduces the temperature change effect caused by the spiral flow of the low-temperature medium, and greatly improves the flow rate and heat exchange efficiency of the low-temperature medium. Alternatively, the track A201 and track B202 can be welded together using a bracket, and the bracket can be installed outdoors, or a fan can be installed outside the bracket to transfer the heat generated in the external fluid region 303 of the heat exchanger using high-speed airflow.

[0040] A ring plate 401 is provided at the outer edge of the cone cap 4. Bolt holes A4011 are provided horizontally inside the ring plate 401. Four sets of screw seats A402 are provided at the outer edge of the ring plate 401. Slots A4021 are provided at the edge of the screw seats A402. Four sets of limiting beams 407 are provided between the cone caps 4 at the front and rear ends of each set of conical spiral bodies 3. Vertical surfaces are provided at the front and rear ends of the limiting beams 407. Through holes for installing bolts are provided on the vertical surfaces of the limiting beams 407. The external structure of the conical spiral body 3 and the cone cap 4 form a conical heat exchanger. The cone cap 4 and the conical spiral body 3 can be completely sealed and fixed by welding. Alternatively, the conical curved surface of the cone cap 4 can be slotted along the edge of the spiral plate and clamped and fastened by the outer screws, which is convenient for disassembly and maintenance.

[0041] A sliding beam frame 501 is fixedly connected to the top of the slide table C5. A connecting rod 502 is fixedly connected to the bottom of the sliding beam frame 501. A sealing plate 5021 is fixedly connected to the horizontal end of the connecting rod 502. A protrusion A5022 is integrally formed on the rear side of the sealing plate 5021. The shape of the protrusion A5022 corresponds to the shape of the annular groove 4052. A protrusion B5023 is provided on the rear side of the protrusion A5022. The shape of the protrusion B5023 corresponds to the shape of the groove 405. A connecting pipe 5024 is horizontally opened inside the protrusion B5023. The slide table C5 is slidably connected to the top of the two sets of rails B202. A screw seat B503 is fixedly connected to the top of the slide table C5. The screw seat B503 is provided with a slot B5031. The slot A4021 is horizontally opened inside. The heat exchanger is slidably connected with fastening screw A8, and horizontally connected with fastening screw B9 inside the slot B5031. After assembling the heat exchanger, the slide table C5 is slid horizontally on the track so that the end sealing plate 5021 fits with the mating plane 403, the protrusion A5022 is inserted into the groove 405, the protrusion B5023 is inserted into the drain cavity 4051, the connecting pipe 5024 is inserted into the drain hole 4053, and the end structure of the sliding beam frame 501 on both sides is mated with the front and rear ends of the assembled conical heat exchanger. The fastening screw A8 is installed on the screw seat B503 and fastened with bolts. The medium pipes A6 on both sides can be adapted and connected to heat exchangers of different lengths after different combinations.

[0042] The slide A2011 is internally connected by clamps to have media pipes A6 and B7 respectively. The middle section of media pipes A6 and B7 is a corrugated flexible hose made of austenitic stainless steel, and both ends are flange joints. The bottom of the medium pipe A6 is clamped and fixed to the vertical surface of the sliding beam frame 501. The bottom of the medium pipe A6 is connected to the connecting pipe 5024 through a flange. The bottom of the medium pipe B7 is connected to the diversion pipe A3012 through a flange. As needed, different numbers of conical heat exchangers are hoisted into the metal channel 2 using a crane. Multiple sets of conical heat exchangers slide horizontally in the channel through the cooperation of the track B202 and the sliding table B3041. The fastening screw A8 is inserted into the slot A4021 on the outside of different heat exchangers. After being tightened with bolts, multiple sets of heat exchangers can be combined into an internally connected whole. Wastewater that has been cooled and circulated by water pumps in the plant area is introduced into the metal channel 2 for circulation through the diversion channel. The wastewater can be used at room temperature. While the heat exchange is carried out vertically inside the traditional spiral plate, the horizontal flow of external water can be used to assist in cooling the high-temperature medium in the heat exchange.

[0043] See Figure 9Example 2: Based on Example 1, one of the two sets of conical spiral bodies 3 can have one set of internal spiral plates removed and a conical cap 4 without a fluid groove 404 installed, making its external fluid region 303 disappear. After the high-temperature fluid is input from the set of conical spiral bodies 3 with the external fluid region 303, the low-temperature wastewater in the external fluid region 303 can enter the spiral cavity to assist the two sets of media with the second largest temperature difference between the spiral plates, so that the high-temperature medium is pre-cooled. The pre-cooled second-high-temperature medium enters the conical spiral body 3 with only two channels. The low-temperature medium enters the conical spiral body 3 with two channels and exchanges heat with the second-high-temperature medium. The second-low-temperature medium enters the conical spiral body 3 with the external fluid region 303 and works with the low-temperature wastewater to cool the high-temperature medium. This makes the low-temperature medium and the second-high-temperature medium exchange heat in the conical spiral body 3 with two channels, and the second-low-temperature medium and the high-temperature medium exchange heat in the conical spiral body 3 with three channels. The two media with the largest temperature difference enter from opposite directions to improve the heat exchange intensity in stages and reduce energy consumption.

[0044] The specific usage and function of this embodiment: When using this invention, firstly, channel construction is carried out to divert wastewater from the factory area to the heat exchange area. After constructing the diversion channel, a cement U-shaped channel 1 is erected inside the diversion channel, and then a metal channel 2 is erected in the middle section of the cement U-shaped channel 1. After waterproofing the channel, as needed, different numbers of conical heat exchangers are hoisted into the metal channel 2 using a crane. Through the cooperation of track B202 and sliding table B3041, multiple sets of conical heat exchangers are slid horizontally in the channel. The fastening screw A8 is inserted into the slot A4021 on the outside of different heat exchangers, and after being tightened with bolts, multiple sets of heat exchangers can be combined into an internally connected whole. After the heat exchangers are combined, the sliding table C5 is slid horizontally on the track so that the sealing plate 5021 at its end fits against the mating plane 403, so that the protrusion A5022 is inserted into the groove 405, and the protrusion B5023 is inserted into the drain cavity 4051. The connecting pipe 50 is then connected. 24. Insert the drain hole 4053, connect the end structure of the sliding beam frame 501 on both sides to the front and rear ends of the combined conical heat exchanger, install the fastening screw A8 on the screw seat B503 and tighten it with bolts. After connecting the external fluid area 303 of several sets of heat exchangers to the middle pipeline, make the medium inlet and outlet pipelines at both ends of the front and rear ends firmly connected to the heat exchanger as a whole. Through the diversion channel, the wastewater that has been cooled and circulated by the water pump in the plant area or the water flow of the external river is introduced into the metal channel 2 for circulation. While the heat exchange is carried out in the vertical direction inside the traditional spiral plate, the horizontal flow of the external water can be used to assist in cooling the high temperature medium in the heat exchange, reducing the energy consumption of the heat exchanger. The low temperature medium input pipeline is supplemented into the low temperature medium pipeline in multiple stages by using the branch pipe, so that it continuously cools the high temperature medium in the extended spiral circulation process, reduces the temperature change effect caused by the spiral flow of the low temperature medium, and greatly improves the flow rate and heat exchange efficiency of the low temperature medium.

Claims

1. An energy-saving spiral plate heat exchanger, comprising: A cement U-shaped channel (1), wherein a plate valve is installed on the inner side of the cement U-shaped channel (1), and a metal channel (2) is sleeved inside the cement U-shaped channel (1), characterized in that: the cross-section of the metal channel (2) is U-shaped, and a conical spiral body (3) is slidably connected to the inner side of the metal channel (2), and two sets of conical caps (4) are installed at the front and rear ends of each set of conical spiral bodies (3). The top of the metal channel (2) is equipped with a track A (201), the top of the track A (201) is slidably connected to a slide table A (2011), the top of the slide table A (2011) is provided with a clamp, the top of the slide table A (2011) is provided with a fastening mechanism (2012) for positioning, and two sets of tracks B (202) are fixedly connected to the left and right sides inside the metal channel (2). The conical spiral body (3) has a horizontally protruding front end and an inwardly recessed rear end; The two sets of cone caps (4) are respectively connected to the protruding and concave surfaces of the conical spiral body (3). The center of the spiral plate inside the conical spiral body (3) is S-shaped. Three sets of conical spiral plates are welded to the inner side of the conical spiral body (3). The inner side of the conical spiral body (3) is separated by spiral plates to form a medium cavity A (301) and a medium cavity B (302). The inner side of the medium cavity B (302) is separated by spiral plates to form an outer fluid region (303). The conical spiral body (3) The outer top of the conical spiral body (3) is provided with a transition cavity A (3011) by welding, and the outer bottom of the conical spiral body (3) is provided with a transition cavity B (3021) by welding. The transition cavity A (3011) is connected to the outside of the drainage tube A (3012). The interior of the transition cavity A (3011) is connected to the medium cavity A (301), and the interior of the transition cavity B (3021) is connected to the medium cavity B (302). The outside of the medium cavity B (302) is connected to the drainage tube B (3022).

2. The energy-saving spiral plate heat exchanger as described in claim 1, characterized in that: The conical spiral body (3) has side plates (304) fixedly connected to the left and right sides by welding. The bottom of the side plates (304) is connected to a slide B (3041) by bolts. The slide B (3041) is slidably connected to the track B (202). The top of the conical spiral body (3) has two sets of lifting rings (305) fixedly connected by welding.

3. The energy-saving spiral plate heat exchanger as described in claim 1, characterized in that: The front end of the cone cap (4) on the front side of the conical spiral body (3) and the rear end of the cone cap (4) on the rear side of the conical spiral body (3) are respectively provided with a mating plane (403). The mating plane (403) is provided with a groove (405). The cone cap (4) is horizontally penetrated by a fluid groove (404). The fluid groove (404) is connected to the outer fluid area (303). The groove (405) is horizontally provided with a drain cavity (4051). The groove (405) is provided with an annular groove (4052) on the outside. The drain cavity (4051) is provided with a drain hole (4053) inside. The annular groove (4052) is provided with a sealing gasket ring (406) by interference fit on the inside.

4. The energy-saving spiral plate heat exchanger as described in claim 1, characterized in that: The cone cap (4) has a ring plate (401) at its outer edge. The ring plate (401) has bolt holes A (4011) in the horizontal direction inside. The ring plate (401) has four sets of screw seats A (402) at its outer edge. The screw seats A (402) have slots A (4021) at their edges.

5. The energy-saving spiral plate heat exchanger as described in claim 1, characterized in that: Four sets of limiting beams (407) are provided between the cone caps (4) at the front and rear ends of each set of conical spiral bodies (3). The limiting beams (407) have vertical surfaces at the front and rear ends, and the vertical surfaces of the limiting beams (407) have through holes for installing bolts.

6. The energy-saving spiral plate heat exchanger as described in claim 3, characterized in that: The top of the two sets of tracks B (202) is slidably connected to a slide table C (5), the top of the slide table C (5) is fixedly connected to a slide beam frame (501), the top of the slide table C (5) is fixedly connected to a screw seat B (503), and the screw seat B (503) is provided with a slot B (5031).

7. The energy-saving spiral plate heat exchanger as described in claim 6, characterized in that: The bottom of the sliding beam frame (501) is fixedly connected to a connecting rod (502), and the horizontal end of the connecting rod (502) is fixedly connected to a sealing plate (5021). The sealing plate (5021) is integrally formed with a protrusion A (5022) on the rear side. The shape of the protrusion A (5022) corresponds to the shape of the annular groove (4052). The rear side of the protrusion A (5022) is provided with a protrusion B (5023). The shape of the protrusion B (5023) corresponds to the shape of the groove (405). The protrusion B (5023) is provided with a connecting pipe (5024) in the horizontal direction inside.

8. The energy-saving spiral plate heat exchanger as described in claim 4, characterized in that: The slot A (4021) is slidably connected in the horizontal direction with a fastening screw A (8), and the slot B (5031) is slidably connected in the horizontal direction with a fastening screw B (9).

9. The energy-saving spiral plate heat exchanger as described in claim 7, characterized in that: The slide A (2011) is equipped with a medium pipe A (6) and a medium pipe B (7) connected by clamps. The bottom of the medium pipe A (6) is clamped and fixed at the vertical surface of the slide beam frame (501) by clamps. The bottom of the medium pipe A (6) is connected to the connecting pipe (5024) by a flange. The bottom of the medium pipe B (7) is connected to the drain pipe A (3012) by a flange.

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