Sewage heat recovery device for sauna room

Abstract

The utility model provides a sauna room sewage heat recovery device which comprises a heat recovery box, a filter assembly is arranged on the upper side of the interior of the heat recovery box, in the using process of the device, a vibration motor drives a filter screen plate to vibrate through a bearing plate and a connecting rod, and under the elastic force of a compression spring, the filter screen plate vibrates. When the filter screen plate vibrates, the filter screen plate can move up and down at a certain amplitude, so that the vibration amplitude of the filter screen plate is further improved, insoluble impurities blocked by the filter screen plate can slide leftwards into the sewage guide shell under the vibration force, the filter screen plate is prevented from being easily blocked in the use process, and the service life of the filter screen plate is prolonged. And in addition, workers do not need to regularly clean the filter screen plate in the later period, the flowing path of the sewage in the heat recovery box can be prolonged by fixedly connecting the three sets of first partition plates and the two sets of second partition plates which are arranged in a staggered mode, and therefore water entering the first partition plates and the second partition plates can sufficiently adsorb waste heat of the sewage flowing through the first partition plates and the second partition plates.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery of sewage in sauna rooms, in particular to a heat recovery device for sewage in sauna rooms. Background Art

[0002] Sauna, also known as sweat steaming room, originated in Finland. It includes dry steam room and wet steam room, but the sauna people usually refer to is dry steam room, and the steam room is wet steam room. Traditional sauna uses burning mineral stones and pouring water on them to produce steam, while modern sauna uses far infrared and negative ions to achieve the effect of sauna. Sauna has many functions such as weight loss, detoxification, and rheumatism, and is very popular among consumers. During the use of sauna, wastewater with heat will be generated. At this time, a wastewater heat recovery device is needed to recover and reuse the heat in the wastewater.

[0003] Publication number "CN216745581U" provides a device for recovering and reusing heat from bathing and domestic waste water. By arranging a plurality of first partitions and a plurality of second partitions intermittently distributed from top to bottom inside the inner tube body, the flow path of the waste water can be increased, so that the heat in the waste water can be recovered more effectively, and the first partition and the second partition can be easily taken out, so that the first partition and the second partition can be easier to clean after use.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] During the use of the filter cover in the heat recovery and reuse device, the staff needs to disassemble and clean it regularly, otherwise the impurities blocked by the filter cover will clog the filter cover, causing the sewage to not flow smoothly into the inner tube body, thereby increasing the labor intensity of the staff. Secondly, the waste heat recovery structure in the heat recovery and reuse device does not have the ability to circulate heat recovery, resulting in the inability to fully adsorb and recover the waste heat in the sewage during actual use, and the practicality is poor. Utility Model Content

[0006] The utility model aims to provide a sauna room sewage heat recovery device to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A sauna room sewage heat recovery device comprises a sewage inlet pipe, a heat recovery box, a collecting shell, a sewage discharge pipe, a supporting leg and an insulating water tank, wherein the sewage inlet pipe is fixedly connected to the right side of the upper end face of the heat recovery box, the collecting shell is fixedly connected to the lower side of the left end face of the heat recovery box, the sewage discharge pipe is fixedly connected to the lower end face of the collecting shell, the supporting leg is fixedly connected to the bottom of the heat recovery box, an insulating water tank is placed on the right side of the heat recovery box, a filter assembly is arranged on the upper side of the heat recovery box, and the filter assembly is used to block and filter insoluble substances in the sewage entering the heat recovery box, a heat recovery assembly is arranged inside the heat recovery box, and the heat recovery assembly is used to recover and reuse the residual heat in the sauna room sewage entering the heat recovery box.

[0009] Preferably, the filter assembly includes a vibration motor, a supporting plate, a connecting rod, a filter screen plate, a dirt guide shell, a limit support seat, a supporting seat, a support plate and a compression spring; the filter screen plate is installed on the upper side of the heat recovery box, support seats are symmetrically provided on the left and right sides of the lower end surface of the filter screen plate, a compression spring is installed inside the support seat, a limit support seat is installed on the lower side of the support seat, a support plate is fixedly connected to the bottom of the limit support seat, a connecting rod is connected to the middle position of the upper end surface of the filter screen plate, the upper end of the connecting rod is connected to the supporting plate, a vibration motor is installed in the middle position of the upper end surface of the supporting plate, and a dirt guide shell is fixedly connected to the left end surface of the heat recovery box.

[0010] Preferably, the heat recovery component includes a first partition, a connecting pipe, a second partition, a second insulated water pipe, a water pump, a three-way valve and a first insulated water pipe, the first partition is fixedly connected to the inside of the heat recovery box, the second partition is fixedly connected below the first partition, a connecting pipe is fixedly connected between the second partition and the first partition, the second insulated water pipe is fixedly connected to the upper end surface of the insulated water tank, a water pump is installed on the right end surface of the insulated water tank, the upper end of the water pump is connected to the three-way valve, and the three-way valve and the first insulated water pipe are connected to the inlet of the first partition.

[0011] Preferably, three groups of the first partitions are fixedly connected, and two groups of the second partitions are fixedly connected. The first partitions and the second partitions are arranged alternately. Both the first partitions and the second partitions are hollow structures, and a thermometer is installed on the right side of the upper end surface of the insulated water tank.

[0012] Preferably, a plurality of reinforcing ribs are provided on the lower end surface of the filter screen plate, the filter screen plate is lower on the left and higher on the right, and an annular baffle is installed on the lower end surface of the support seat.

[0013] Preferably, limit through holes are symmetrically provided on the left and right sides of the interior of the supporting plate, and limit rods are symmetrically provided on the left and right sides of the upper end surface of the heat recovery box, and the limit rods match the limit through holes.

[0014] Preferably, a reinforcing rib is fixedly connected to the lower end surface of the support plate, the limiting support seat is T-shaped, a sealing ring is embedded in the upper end surface of the heat recovery box, and the sealing ring matches the connecting rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. During the use of this device, the vibration motor drives the filter screen plate to vibrate through the support plate and the connecting rod, and under the elastic force of the compression spring, the filter screen plate will move up and down to a certain extent while vibrating, so as to further increase the vibration amplitude of the filter screen plate. At this time, under the vibration force, the insoluble impurities blocked by the filter screen plate will slide to the left into the dirt guide shell, so as to avoid the filter screen plate being easily blocked during use, and the staff will not need to clean the filter screen plate regularly in the later stage, so as to reduce the labor intensity of the staff;

[0017] 2. By fixedly connecting three groups of first baffles and two groups of second baffles that are arranged in an alternating manner, the flow path of the sewage in the heat recovery tank can be extended, so that the water entering the first baffle and the second baffle can fully absorb the waste heat of the sewage flowing through, and the second insulated water pipe can divert the domestic water that has absorbed the waste heat to the insulated water tank for circulation, so as to fully absorb and recover the waste heat in the sewage inside the heat recovery tank, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a front cross-sectional view of the filter component and the heat recovery component in the utility model;

[0020] Figure 3 It is a partial structural diagram of the filter assembly in the utility model;

[0021] Figure 4 It is a structural diagram of the first partition and the second partition in the utility model;

[0022] Figure 5 for Figure 2 A is an enlarged view of the middle image.

[0023] In the figure: 1. sewage inlet pipe; 2. filter assembly; 21. vibration motor; 22. limit rod; 23. support plate; 231. limit through hole; 24. connecting rod; 241. sealing ring; 25. filter screen; 251. reinforcing rib; 26. sewage guide shell; 27. limit support seat; 28. support seat; 281. annular baffle; 29. ​​support plate; 291. reinforcing rib; 211. compression spring; 3. heat recovery box; 4. collecting shell; 5. sewage discharge pipe; 6. support leg; 7. heat recovery assembly; 71. first partition; 72. connecting pipe; 73. second partition; 74. second insulated water pipe; 75. water pump; 76. three-way valve; 77. first insulated water pipe; 8. insulated water tank; 81. thermometer. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A sauna room sewage heat recovery device comprises a sewage inlet pipe 1, a heat recovery box 3, a collecting shell 4, a sewage discharge pipe 5, a supporting leg 6 and an insulating water tank 8. The right side of the upper end surface of the heat recovery box 3 is fixedly connected with the sewage inlet pipe 1, the inlet of the sewage inlet pipe 1 is connected with the floor drain outlet in the external sauna room, the sewage inlet pipe 1 can guide the sewage discharged from the external sauna room into the heat recovery box 3, the lower side of the left end surface of the heat recovery box 3 is fixedly connected with the collecting shell 4, the collecting shell 4 is respectively connected with the heat recovery box 3, the sewage guide shell 26 and the sewage discharge pipe 5, the collecting shell 4 is connected with the heat recovery box 3, the sewage guide shell 26 and the sewage discharge pipe 5 by welding, and the collecting shell 4 can guide the sewage discharged from the heat recovery box 3 and the insoluble matter guided down by the sewage guide shell 26 into the sewage discharge pipe 5.

[0028] A sewage discharge pipe 5 is fixedly connected to the lower end face of the collecting shell 4, and the outlet of the sewage discharge pipe 5 is connected to the inlet of the external sewer pipe. The sewage discharge pipe 5 can collect and introduce the sewage and insoluble matter guided down by the collecting shell 4 into the external sewer pipe. A support leg 6 is fixedly connected to the bottom of the heat recovery box 3, and the support leg 6 can support and fix the heat recovery box 3. A rubber shock-isolating pad is bonded to the bottom of the support leg 6. The rubber shock-isolating pad avoids resonance noise between the support leg 6 and the ground. An insulated water tank 8 is placed on the right side of the heat recovery box 3. The insulated water tank 8 can not only store an appropriate amount of domestic water, but also has its own insulation ability to avoid rapid heat loss of the internal domestic water. A control panel is installed on the left side of the front end face of the insulated water tank 8, and the control panel is connected to the vibration motor 21 and the water pump 75 respectively through wires. The control panel facilitates the staff to control the operation of the vibration motor 21 and the water pump 75.

[0029] A filter assembly 2 is provided on the upper side of the heat recovery box 3, and the filter assembly 2 is used to block and filter insoluble matter in the sewage entering the heat recovery box 3. A heat recovery assembly 7 is provided inside the heat recovery box 3, and the heat recovery assembly 7 is used to recover and reuse the waste heat in the sauna sewage entering the heat recovery box 3. An observation window is provided on the front side of the upper end of the insulated water tank 8. The observation window is convenient for the staff to observe the water level inside the insulated water tank 8 in real time. A water replenishment valve is installed on the upper side of the front end surface of the insulated water tank 8, and the inlet of the water replenishment valve is connected with the outlet of the external domestic water storage tank through a pipeline. The water replenishment valve is convenient for the staff to replenish domestic water into the insulated water tank 8. The front end surface of the heat recovery box 3 is sealed with a plugging plate, and the plugging plate is a detachable structure. The detachable plugging plate is convenient for the staff to maintain and clean the inside of the heat recovery box 3 at a later stage.

[0030] The heat recovery assembly 7 includes a first partition 71, a connecting pipe 72, a second partition 73, a second insulated water pipe 74, a water pump 75, a three-way valve 76 and a first insulated water pipe 77. The first partition 71 is fixedly connected inside the heat recovery box 3. The front-to-back width of the first partition 71 is the same as the front-to-back width of the inner wall of the heat recovery box 3. The first partition 71 is connected to the heat recovery box 3 by welding. The second partition 73 is fixedly connected below the first partition 71. The front-to-back width of the second partition 73 is the same as the front-to-back width of the inner wall of the heat recovery box 3. The second partition 73 is connected to the heat recovery box 3 by welding. Three groups of the first partition 71 are fixedly connected, and two groups of the second partition 73 are fixedly connected. The first partition 71 and the second partition 73 are staggered. The three groups of first partitions 71 and the two groups of second partitions 73 arranged in a staggered manner can extend the flow path of sewage in the heat recovery box 3, so that the water entering the first partition 71 and the second partition 73 can fully absorb the waste heat of the sewage flowing through.

[0031] The first partition 71 and the second partition 73 are both hollow structures, which are convenient for water to pass through their interiors to absorb heat. A connecting pipe 72 is fixedly connected between the second partition 73 and the first partition 71. The connecting pipe 72 is respectively connected to the first partition 71 and the second partition 73. The connecting pipe 72 facilitates the water inside the first partition 71 to flow into the second partition 73. A second insulating water pipe 74 is fixedly connected to the upper end surface of the insulating water tank 8. The second insulating water pipe 74 can guide the water flowing through the first partition 71 and the second partition 73 to fall into the insulating water tank 8 again. The insulating water tank 8 A water pump 75 is installed on the right end face. When working, the water pump 75 can pump the water in the insulated water tank 8 to the first partition 71 through the first insulated water pipe 77. A three-way valve 76 is connected to the upper end of the water pump 75. The three-way valve 76 and the inlet of the first partition 71 are connected to the first insulated water pipe 77. The outlet of the other end of the three-way valve 76 is connected to the inlet of the external warm water storage tank through a pipeline. The three-way valve 76 facilitates the staff to control the flow direction of domestic water pumped out by the water pump 75 according to demand. A thermometer 81 is installed on the right side of the upper end face of the insulated water tank 8. The thermometer 81 can detect the water temperature inside the insulated water tank 8 in real time to facilitate the staff to observe in real time.

[0032] Embodiment 2:

[0033] On the basis of the first embodiment, the vibration motor 21 in this embodiment drives the filter screen plate 25 to vibrate through the supporting plate 23 and the connecting rod 24, and under the elastic force of the compression spring 211, the filter screen plate 25 will make a certain upward and downward displacement while vibrating, so as to further increase the vibration amplitude of the filter screen plate 25. At this time, under the vibration force, the insoluble impurities blocked by the filter screen plate 25 will slide to the left into the dirt guide shell 26, so as to prevent the filter screen plate 25 from being easily blocked during use, and there is no need for the staff to regularly clean the filter screen plate 25 in the later stage.

[0034] The filter assembly 2 includes a vibration motor 21, a support plate 23, a connecting rod 24, a filter screen plate 25, a dirt guide shell 26, a limit support seat 27, a support seat 28, a support plate 29 and a compression spring 211. A filter screen plate 25 is installed on the upper side of the heat recovery box 3. The filter screen plate 25 is low on the left and high on the right. The front and rear widths of the filter screen plate 25 are the same as the front and rear widths of the inner wall of the heat recovery box 3. The filter screen plate 25 with a low left and high right shape facilitates the blocked insoluble impurities to slide to the left. The filter screen plate 25 is made of a stainless steel filter screen. The filter screen plate 25 made of a stainless steel filter screen has better corrosion resistance and service life, and the left and right sides of the lower end surface of the filter screen plate 25 are symmetrical A support seat 28 is provided, and the support seat 28 is connected to the filter screen plate 25 by welding. The support seat 28 can support the filter screen plate 25. A compression spring 211 is installed inside the support seat 28. The compression spring 211 enables the filter screen plate 25 to have up and down elastic force during use. A limiting support seat 27 is installed on the lower side of the support seat 28. The limiting support seat 27 is connected to the support plate 29 by welding. The limiting support seat 27 is T-shaped. The T-shaped limiting support seat 27 can not only support the compression spring 211, but also facilitate the annular blocking piece 281 to limit it, so as to prevent the support seat 28 from slipping during use.

[0035] A support plate 29 is fixedly connected to the bottom of the limit support seat 27, and the support plate 29 is connected to the heat recovery box 3 by welding. The support plate 29 can support the limit support seat 27, and a connecting rod 24 is connected to the middle position of the upper end surface of the filter screen plate 25, and the connecting rod 24 is connected to the filter screen plate 25 and the supporting plate 23 by welding. The connecting rod 24 can support the supporting plate 23, and the upper end of the connecting rod 24 is connected to the supporting plate 23, and the supporting plate 23 can support the vibration motor 21. The middle position of the upper end surface of the supporting plate 23 is installed with a vibration motor 21, and the vibration motor 21 can drive the supporting plate 23 to vibrate when working. A sewage guide shell 26 is fixedly connected to the left end surface of the heat recovery box 3, and the sewage guide shell 26 is connected to the heat recovery box 3 by welding. The sewage guide shell 26 can concentrate the insoluble impurities that slide down from the upper end surface of the filter screen plate 25 to the left side and guide them into the collecting shell 4.

[0036] The lower end surface of the filter screen plate 25 is provided with a plurality of reinforcing ribs 251, and the reinforcing ribs 251 are connected to the filter screen plate 25 by welding. The plurality of reinforcing ribs 251 can further improve the strength of the filter screen plate 25 to prevent the filter screen plate 25 from being easily deformed during use. The lower end surface of the support seat 28 is installed with an annular baffle 281, and the annular baffle 281 can limit the upward movement range of the support seat 28 to prevent the support seat 28 from slipping during use. The left and right sides of the inner side of the support plate 23 are symmetrically provided with limited through holes 231, and the left and right sides of the upper end surface of the heat recovery box 3 are symmetrically provided There is a limit rod 22, which is connected to the heat recovery box 3 by welding. The limit rod 22 matches the limit through hole 231. The matching limit rod 22 and limit through hole 231 can limit the support plate 23 to prevent the support plate 23 from shaking or deflecting during use. The lower end surface of the support plate 29 is fixedly connected with a reinforcing rib 291, and the reinforcing rib 291 makes the support plate 29 more stable. A sealing ring 241 is embedded on the upper end surface of the heat recovery box 3, and the sealing ring 241 matches the connecting rod 24. The sealing ring 241 makes the sealing between the connecting rod 24 and the heat recovery box 3 better.

[0037] Working principle: During the use of this device, the sewage inlet pipe 1 can guide the sewage discharged from the external sauna room into the heat recovery box 3. At this time, the filter screen 25 can block and filter the insoluble impurities in the sewage passing through, so as to prevent the insoluble impurities in the sewage from continuing to flow downward to the upper end surface of the first partition plate 71 and causing the sewage to flow unsmoothly. In this process, by starting the vibration motor 21, the vibration motor 21 drives the filter screen 25 to vibrate through the supporting plate 23 and the connecting rod 24. At this time, the compression spring 211 makes the support seat 28 have a certain upward and downward elastic force, so that the filter screen 25 can do a certain upward and downward displacement while vibrating, thereby further improving the filter screen 25 vibration amplitude, at this time, under the vibration force, the insoluble impurities blocked by the filter screen plate 25 will slide to the left into the sewage guide shell 26, so as to prevent the filter screen plate 25 from being easily blocked during use, and the sewage guide shell 26 will concentrate the insoluble impurities and guide them to the collecting shell 4, so that the collecting shell 4 will concentrate the insoluble impurities downward to the sewage discharge pipe 5; at the same time, the water pump 75 is started, and the water pump 75 works to transport the domestic water in the insulation water tank 8 to the inside of the first partition 71 through the first insulation water pipe 77, so that the domestic water can absorb the heat adsorbed by the first partition 71, and then the connecting pipe 72 will transport the domestic water inside the first partition 71 The second partition 73 below is used to guide the domestic water to absorb the heat adsorbed by the second partition 73. Finally, the second insulated water pipe 74 will guide the domestic water that absorbs the heat of the first partition 71 and the second partition 73 to the insulated water tank 8 for circulation. In this process, the sewage filtered by the filter screen 25 will flow downward and be blocked by the first partition 71, so that the sewage flows to the left. Then the second partition 73 will block the sewage flowing down again, so that the sewage flows to the right. Through multiple blockages, the flow path of the sewage in the heat recovery tank 3 is extended, so that the first partition 71 and the second partition 73 can absorb the heat of the sewage. The waste heat is fully adsorbed, and finally the sewage will be concentratedly introduced into the sewage discharge pipe 5 through the collecting shell 4 and discharged; when the staff observes through the thermometer 81 that the domestic water temperature inside the insulated water tank 8 has reached the required temperature value, the outlet of the three-way valve 76 can be turned to make the working water pump 75 transport the hot water in the insulated water tank 8 to the external warm water storage tank for use. When all the hot water inside the insulated water tank 8 is transported out, the staff first turns off the water pump 75, and then opens the water replenishment valve to refill the domestic water inside the insulated water tank 8. After the replenishment is completed, the three-way valve 76 is turned and the water pump 75 is started to perform heat recovery operation again.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sauna room sewage heat recovery device, comprising a sewage inlet pipe (1), a heat recovery box (3), a collecting shell (4), a sewage discharge pipe (5), a supporting leg (6) and a heat preservation water tank (8), characterized in that: The right side of the upper end surface of the heat recovery box (3) is fixedly connected to a sewage inlet pipe (1), the lower side of the left end surface of the heat recovery box (3) is fixedly connected to a collecting shell (4), the lower end surface of the collecting shell (4) is fixedly connected to a sewage discharge pipe (5), and the bottom of the heat recovery box (3) is fixedly connected to a supporting leg (6); An insulated water tank (8) is placed on the right side of the heat recovery box (3); a filter assembly (2) is arranged on the upper side of the interior of the heat recovery box (3); and the filter assembly (2) is used to block and filter insoluble matter in sewage entering the interior of the heat recovery box (3); a heat recovery assembly (7) is arranged inside the heat recovery box (3); and the heat recovery assembly (7) is used to recover and reuse residual heat in the sauna room sewage entering the interior of the heat recovery box (3).

2. A sauna room wastewater heat recovery device according to claim 1, characterized in that: The filter assembly (2) comprises a vibration motor (21), a support plate (23), a connecting rod (24), a filter screen plate (25), a dirt guide shell (26), a limit support seat (27), a support seat (28), a support plate (29) and a compression spring (211); the filter screen plate (25) is installed on the upper side of the heat recovery box (3); the support seats (28) are symmetrically arranged on the left and right sides of the lower end surface of the filter screen plate (25); and the compression spring (211) is installed inside the support seat (28). A spring (211) is provided, a limited support seat (27) is installed on the lower side of the support seat (28), a support plate (29) is fixedly connected to the bottom of the limited support seat (27), a connecting rod (24) is connected to the middle position of the upper end surface of the filter screen plate (25), the upper end of the connecting rod (24) is connected to a support plate (23), a vibration motor (21) is installed at the middle position of the upper end surface of the support plate (23), and a dirt guide shell (26) is fixedly connected to the left end surface of the heat recovery box (3).

3. The sauna room wastewater heat recovery device according to claim 1, characterized in that: The heat recovery component (7) comprises a first partition (71), a connecting pipe (72), a second partition (73), a second heat-insulating water pipe (74), a water pump (75), a three-way valve (76) and a first heat-insulating water pipe (77); the first partition (71) is fixedly connected inside the heat recovery box (3); the second partition (73) is fixedly connected below the first partition (71); a connecting pipe (72) is fixedly connected between the second partition (73) and the first partition (71); the second heat-insulating water pipe (74) is fixedly connected to the upper end surface of the heat-insulating water box (8); a water pump (75) is installed on the right end surface of the heat-insulating water box (8); the upper end of the water pump (75) is connected to the three-way valve (76); the three-way valve (76) and the first heat-insulating water pipe (77) are connected to the inlet of the first partition (71).

4. A sauna room wastewater heat recovery device according to claim 3, characterized in that: The first partitions (71) are fixedly connected with three groups, and the second partitions (73) are fixedly connected with two groups. The first partitions (71) and the second partitions (73) are arranged in a staggered manner. Both the first partitions (71) and the second partitions (73) are hollow structures. A thermometer (81) is installed on the right side of the upper end surface of the thermal insulation water tank (8).

5. The sauna room wastewater heat recovery device according to claim 2, characterized in that: The lower end surface of the filter screen plate (25) is provided with a plurality of reinforcing ribs (251); the filter screen plate (25) is lower on the left and higher on the right; and the lower end surface of the support seat (28) is provided with an annular baffle (281).

6. A sauna room wastewater heat recovery device according to claim 2, characterized in that: The support plate (23) has symmetrically arranged limit holes (231) on both sides thereof, and the upper end surface of the heat recovery box (3) has symmetrically arranged limit rods (22) on both sides thereof, and the limit rods (22) match the limit holes (231).

7. A sauna room wastewater heat recovery device according to claim 2, characterized in that: The lower end surface of the support plate (29) is fixedly connected with a reinforcing rib (291); the limiting support seat (27) is T-shaped; the upper end surface of the heat recovery box (3) is embedded with a sealing ring (241), and the sealing ring (241) matches the connecting rod (24).

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