Cold and hot water exchange mechanism

Abstract

The utility model discloses a cold and hot water exchange mechanism, and relates to the technical field of cold and hot water exchange, the cold and hot water exchange mechanism comprises a heat exchange box composed of a box body, a partition plate, an upper heating bin and a lower heating bin, a heat exchange assembly extending to the outside of the box body is arranged in the box body, and the heat exchange assembly is used for achieving heat exchange operation of cold and hot water; the heat exchange assembly comprises an inner heat exchange unit, an outer preheating unit and a water flow channel unit. The outer preheating unit is used for preheating cold water entering the lower heating bin, and the inner heat exchange unit is used for fully heating the preheated cold water; the water flow channel unit is used for achieving circulating flow of cold water and hot water. Cold water can be heated for multiple times through the heat exchange assembly, the heat exchange area of cold water and hot water can be effectively increased through structural cooperation of the spiral preheating tank, the inner heat exchange cylinder and the heat exchange pipe, heat exchange is more efficient and sufficient, and then heat energy efficient recovery operation of industrial hot water is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold and hot water exchange, in particular to a cold and hot water exchange mechanism. Background Art

[0002] The existing hot and cold water exchange mechanism mainly includes a cold water pipe and a hot water pipe. The hot water pipe is arranged in the cold water pipe. The water inlet and the water outlet of the hot water pipe are extended to the outside of the end face of the cold water pipe. The cold water pipe has a water inlet end and a water outlet end. A gap is arranged between the outer wall of the hot water pipe and the inner wall of the cold water pipe. The function of hot and cold water exchange is realized by fitting the cold water pipe and the hot water pipe. Some hot and cold water exchange mechanisms are arranged with the cold water pipe and the hot water pipe opposite to each other inside and outside.

[0003] Hot water used in the production process of key energy-consuming industries such as steel, nonferrous metals, building materials, and chemicals is mostly discharged directly into sewage pipes as wastewater, which contains a large amount of thermal energy, resulting in a waste of resources. In order to achieve efficient recovery of thermal energy in hot water, a hot and cold water exchange mechanism is provided. Utility Model Content

[0004] The utility model aims to provide a cold and hot water exchange mechanism in order to realize the purpose of high-efficiency recovery of heat energy in industrial hot water.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot and cold water exchange mechanism, comprising a heat exchange box composed of a box body and a partition plate, wherein the partition plate is fixed inside the box body, and the partition plate divides the internal space of the box body into an upper heating chamber and a lower heating chamber, and a heat exchange component extending to the outside of the box body is arranged inside the box body, and the heat exchange component is used to realize the heat exchange operation of hot and cold water;

[0006] The heat exchange assembly includes an internal heat exchange unit, an external preheating unit and a water flow channel unit;

[0007] The external preheating unit is used to preheat the cold water entering the lower heating chamber, and the internal heat exchange unit is used to fully heat the preheated cold water;

[0008] The water flow channel unit is used to realize the circulation of cold water and hot water;

[0009] The internal heat exchange unit includes an internal heat exchange cylinder, a sealing plate, a through hole, and a heat exchange tube;

[0010] The inner heat exchange cylinder is fixed to the inner side of the partition plate and extends to the inner sides of the upper heating chamber and the lower heating chamber. The blocking plate is fixed to the upper and lower ends of the inner heat exchange cylinder. The through hole is opened inside the blocking plate and passes through the upper and lower ends of the blocking plate. The heat exchange tube is fixed to the bottom end of the upper blocking plate and passes through the through hole on the lower blocking plate to the inner side of the lower heating chamber.

[0011] The hot water in the upper heating bin can flow through the inner heat exchange tube through the through hole and the heat exchange tube and flow to the lower heating bin to heat the cold water in the inner heat exchange tube.

[0012] As a further solution of the utility model: the external preheating unit includes a spiral preheating tube;

[0013] The spiral preheating tube is distributed on the inner side of the lower heating chamber and sleeved on the outer side of the inner heat exchange tube, and one end of the spiral preheating tube is connected to the bottom of the inner cavity of the inner heat exchange tube;

[0014] When the cooling water enters the inner heat exchange cylinder through the spiral preheating tube, the hot water in the lower heating chamber exchanges heat with the cold water in the spiral preheating tube to achieve preheating of the cold water.

[0015] As a further solution of the utility model: the water flow channel unit includes a hot water inlet pipe, a hot water outlet pipe, a cold water inlet pipe, and a cold water outlet pipe;

[0016] The hot water inlet pipe and the hot water outlet pipe are installed on the outside of the box and penetrate into the inside of the box. The hot water inlet pipe and the hot water outlet pipe are respectively connected to the inner cavity of the upper heating bin and the lower heating bin to realize the circulation of hot water;

[0017] The cold water inlet pipe is distributed on the outside of the box and penetrates the box to the inside of the lower heating chamber. The cold water inlet pipe is fixedly connected and communicated with the other end of the spiral preheating tube. The cold water outlet pipe is distributed on the inside of the upper heating chamber and is connected and communicated with the top of the inner cavity of the inner heat exchange tube. The cold water outlet pipe extends to the outside of the box at one end away from the inner heat exchange tube to realize the circulation of cold water.

[0018] As a further solution of the utility model: there are multiple through holes and heat exchange tubes, one of which is distributed at the center of the sealing plate, and the other through holes and heat exchange tubes are evenly distributed in a ring shape with the center of the sealing plate as the center.

[0019] As a further solution of the utility model: the horizontal height of the position where the hot water inlet pipe is connected to the upper heating chamber is lower than the horizontal height of the top of the upper blocking plate.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] By setting up a heat exchange component, cold water can be heated multiple times, and through the structural coordination of the spiral preheating tank, the internal heat exchange cylinder and the heat exchange tube, the heat exchange area of ​​the cold and hot water can be effectively increased, making the heat exchange more efficient and sufficient, thereby realizing the efficient recovery of heat energy of industrial hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a structural cross-sectional view of the heat exchange box of the utility model;

[0024] Figure 3 It is a structural cross-sectional view of the heat exchange box and the inner heat exchange cylinder of the utility model.

[0025] In the figure: 1. heat exchange box; 101. box body; 102. partition plate; 103. upper heating chamber; 104. lower heating chamber; 2. heat exchange component; 201. inner heat exchange cylinder; 202. sealing plate; 203. through hole; 204. heat exchange tube; 205. hot water inlet pipe; 206. hot water outlet pipe; 207. cold water inlet pipe; 208. spiral preheating pipe; 209. cold water outlet pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 3 In the embodiment of the utility model, the hot and cold water exchange mechanism comprises a heat exchange box 1 composed of a box body 101 and a partition plate 102. The partition plate 102 is fixed to the inner side of the box body 101. The partition plate 102 divides the inner space of the box body 101 into an upper heating chamber 103 and a lower heating chamber 104. The box body 101 is provided with a heat exchange component 2 extending to the outside of the box body 101. The heat exchange component 2 is used to realize the heat exchange operation of hot and cold water.

[0028] The heat exchange assembly 2 includes an internal heat exchange unit, an external preheating unit and a water flow channel unit;

[0029] The external preheating unit is used to preheat the cold water entering the lower heating chamber 104, and the internal heat exchange unit is used to fully heat the preheated cold water;

[0030] The water flow channel unit is used to realize the circulation of cold water and hot water;

[0031] The internal heat exchange unit includes an internal heat exchange cylinder 201, a blocking plate 202, a through hole 203, and a heat exchange tube 204;

[0032] The inner heat exchange tube 201 is fixed to the inner side of the partition plate 102 and extends to the inner side of the upper heating chamber 103 and the lower heating chamber 104. The plugging plate 202 is fixed to the upper and lower ends of the inner heat exchange tube 201. The through hole 203 is opened inside the plugging plate 202 and penetrates the upper and lower ends of the plugging plate 202. The heat exchange tube 204 is fixed to the bottom end of the upper plugging plate 202 and penetrates the through hole 203 on the lower plugging plate 202 to the inner side of the lower heating chamber 104.

[0033] The hot water in the upper heating chamber 103 can flow through the through hole 203 and the heat exchange tube 204 through the inner heat exchange cylinder 201 and flow to the lower heating chamber 104 to heat the cold water in the inner heat exchange cylinder 201;

[0034] The external preheating unit includes a spiral preheating tube 208;

[0035] The spiral preheating tube 208 is distributed on the inner side of the lower heating chamber 104 and sleeved on the outer side of the inner heat exchange tube 201. One end of the spiral preheating tube 208 is connected to the bottom of the inner cavity of the inner heat exchange tube 201.

[0036] When the cooling water enters the inner heat exchange cylinder 201 through the spiral preheating tube 208, the hot water in the lower heating chamber 104 exchanges heat with the cold water in the spiral preheating tube 208 to achieve preheating of the cold water.

[0037] The water flow channel unit includes a hot water inlet pipe 205, a hot water outlet pipe 206, a cold water inlet pipe 207, and a cold water outlet pipe 209;

[0038] The hot water inlet pipe 205 and the hot water outlet pipe 206 are installed on the outside of the box body 101 and penetrate into the inside of the box body 101. The hot water inlet pipe 205 and the hot water outlet pipe 206 are respectively connected with the inner cavity of the upper heating chamber 103 and the lower heating chamber 104 to realize the circulation of hot water;

[0039] The cold water inlet pipe 207 is distributed on the outside of the box body 101 and passes through the box body 101 to the inside of the lower heating chamber 104. The cold water inlet pipe 207 is fixedly connected and communicated with the other end of the spiral preheating tube 208. The cold water outlet pipe 209 is distributed on the inner side of the upper heating chamber 103 and is connected and communicated with the top of the inner cavity of the inner heat exchange tube 201. The cold water outlet pipe 209 extends from one end of the inner heat exchange tube 201 to the outside of the box body 101 to realize the circulation of cold water.

[0040] In this embodiment: when this device is in use, its operating principle is as follows:

[0041] The industrial hot water flows along the channel formed by the hot water inlet pipe 205, the inner cavity of the upper heating chamber 103, the heat exchange pipe 204, the inner cavity of the lower heating chamber 104, and the hot water outlet pipe 206;

[0042] The cold water flows along the channel formed by the cold water inlet pipe 207, the spiral preheating pipe 208, the inner cavity of the inner heat exchange tube 201, and the cold water outlet pipe 209;

[0043] In this process, the hot water in the inner cavity of the lower heating chamber 104 can exchange heat with the cooling inside the spiral preheating tube 208 to achieve preheating of the cold water. The preheated cold water enters the inner heat exchange tube 201. At this time, the hot water in the heat exchange tube 204 exchanges heat with the preheated cold water to achieve secondary heating of the preheated cold water.

[0044] At the same time, the hot water in the inner cavity of the upper heating chamber 103 and the inner cavity of the lower heating chamber 104 can simultaneously exchange heat with the preheated cold water in the inner heat exchange cylinder 201, so that the cold water can be fully heated, and finally the heated cold water is discharged from the cold water outlet pipe 209;

[0045] Through the coordination of the above multiple parts, the cold water can be heated multiple times, and through the structural coordination of the spiral preheating tank 208, the internal heat exchange cylinder 201 and the heat exchange tube 204, the heat exchange area of ​​the cold and hot water can be effectively increased, making the heat exchange more efficient and sufficient, thereby realizing the efficient recovery of heat energy of industrial hot water.

[0046] Please refer to Figures 2-3 There are multiple through holes 203 and heat exchange tubes 204, one of which is distributed at the center of the sealing plate 202, and the other through holes 203 and heat exchange tubes 204 are evenly distributed in a ring shape with the center of the sealing plate 202 as the center.

[0047] In this embodiment, the structure of multiple heat exchange tubes 204 allows the hot water flowing through the heat exchange tubes 204 to come into contact with the cold water inside the inner heat exchange tube 201, which not only improves the heat exchange efficiency but also makes the heating of the cold water inside the inner heat exchange tube 201 more balanced.

[0048] Please refer to Figures 2-3 The level of the position where the hot water inlet pipe 205 is connected to the upper heating chamber 103 is lower than the top level of the upper blocking plate 202.

[0049] In this embodiment: through this structure, the hot water level inside the upper heating chamber 103 can wrap around the inner heat exchange tube 201, so as to achieve the heating of the cold water inside the inner heat exchange tube 201 (it should be noted that: the "cold water" here does not represent temperature, and the "cold water" of the hot water inside the heating chamber 103 has been heated to a higher temperature).

[0050] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hot and cold water exchange mechanism, comprising a heat exchange box (1) consisting of a box body (101) and a partition plate (102), wherein the partition plate (102) is fixed to the inner side of the box body (101), and the partition plate (102) divides the inner space of the box body (101) into an upper heating chamber (103) and a lower heating chamber (104), characterized in that: A heat exchange component (2) extending to the outside of the box body (101) is arranged inside the box body (101), and the heat exchange component (2) is used to realize heat exchange operations of cold and hot water; The heat exchange component (2) comprises an internal heat exchange unit, an external preheating unit and a water flow channel unit; The external preheating unit is used to preheat the cold water entering the lower heating chamber (104), and the internal heat exchange unit is used to fully heat the preheated cold water; The water flow channel unit is used to realize the circulation of cold water and hot water; The internal heat exchange unit comprises an internal heat exchange cylinder (201), a sealing plate (202), a through hole (203), and a heat exchange tube (204); The inner heat exchange tube (201) is fixed to the inner side of the partition plate (102) and extends to the inner sides of the upper heating chamber (103) and the lower heating chamber (104); the blocking plate (202) is fixed to the upper and lower ends of the inner heat exchange tube (201); the through hole (203) is opened inside the blocking plate (202) and penetrates the upper and lower ends of the blocking plate (202); the heat exchange tube (204) is fixed to the bottom end of the upper blocking plate (202) and penetrates the through hole (203) on the lower blocking plate (202) to the inner side of the lower heating chamber (104); The hot water inside the upper heating chamber (103) can flow through the through hole (203) and the heat exchange tube (204) through the interior of the inner heat exchange cylinder (201) and flow into the interior of the lower heating chamber (104), so as to heat the cold water inside the inner heat exchange cylinder (201).

2. The hot and cold water exchange mechanism according to claim 1, characterized in that: The external preheating unit comprises a spiral preheating tube (208); The spiral preheating tube (208) is distributed on the inner side of the lower heating chamber (104) and sleeved on the outer side of the inner heat exchange tube (201); one end of the spiral preheating tube (208) is connected to the bottom of the inner cavity of the inner heat exchange tube (201); When the cooling water enters the inner heat exchange cylinder (201) through the spiral preheating tube (208), the hot water inside the lower heating chamber (104) exchanges heat with the cold water inside the spiral preheating tube (208), thereby achieving preheating of the cold water.

3. The hot and cold water exchange mechanism according to claim 2, characterized in that: The water flow channel unit comprises a hot water inlet pipe (205), a hot water outlet pipe (206), a cold water inlet pipe (207), and a cold water outlet pipe (209); The hot water inlet pipe (205) and the hot water outlet pipe (206) are installed on the outside of the box (101) and penetrate into the inside of the box (101); the hot water inlet pipe (205) and the hot water outlet pipe (206) are respectively connected to the inner cavities of the upper heating chamber (103) and the lower heating chamber (104) to realize the circulation of hot water; The cold water inlet pipe (207) is distributed on the outside of the box (101) and passes through the box (101) to the inside of the lower heating chamber (104); the cold water inlet pipe (207) is fixedly connected and communicated with the other end of the spiral preheating pipe (208); the cold water outlet pipe (209) is distributed on the inside of the upper heating chamber (103) and is connected and communicated with the top of the inner cavity of the inner heat exchange tube (201); one end of the cold water outlet pipe (209) away from the inner heat exchange tube (201) extends to the outside of the box (101) to achieve cold water circulation.

4. The hot and cold water exchange mechanism according to claim 2, characterized in that: The number of the through holes (203) and the heat exchange tubes (204) is multiple, one of the through holes (203) and the heat exchange tube (204) is distributed at the center of the sealing plate (202), and the other through holes (203) and the heat exchange tubes (204) are evenly distributed in a ring shape with the center of the sealing plate (202) as the center.

5. The hot and cold water exchange mechanism according to claim 3, characterized in that: The level of the position where the hot water inlet pipe (205) is connected to the upper heating chamber (103) is lower than the level of the top of the upper sealing plate (202).

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