Cold and hot water circulating device and medical wastewater treatment system

Abstract

The invention discloses a cold and hot water circulating device and a medical wastewater treatment system, and relates to the technical field of medical waste treatment.The cold and hot water circulating device comprises a water tank, a water purification cavity and a sewage cavity, the water purification cavity and the sewage cavity are vertically distributed in the water tank, a water inlet pipe and a water outlet pipe are arranged on the outer wall of the water purification cavity, and a liquid outlet pipe and a floating filter screen are arranged on the outer wall of the sewage cavity; the floating filter screen floats above the liquid level in the water purification cavity and is used for separating the water inlet pipe from the water drainage pipe, the waste gas heat exchange mechanism is installed in the water tank, a pipeline of the waste gas heat exchange mechanism penetrates through the floating filter screen, a liquid collection bent pipe is installed at the position, in the sewage cavity, of the bottom of the waste gas heat exchange mechanism, and an opening and closing switching assembly is installed between the floating filter screen and the waste gas heat exchange mechanism. By integrating the water circulation module, the water consumption of the device is remarkably reduced, the water purification cavity and the sewage cavity are separated, effective separation and recycling of water resources are achieved, wastewater discharge is reduced, and the utilization efficiency of the water resources is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical waste treatment, in particular to a cold and hot water circulation device and a medical wastewater treatment system. Background Art

[0002] With the continuous increase in the total number of medical and health institutions, the number of beds and the number of patients treated nationwide, the amount of medical waste generated is also continuing to grow. Medical waste carries pathogens and infectious substances. If it is not handled properly, it will pose a serious threat to public health. At present, the treatment of medical waste generally adopts a centralized disposal model, but it has shortcomings. For example, small medical institutions in remote areas and villages are far away and produce less waste, resulting in high logistics costs. The risk of infection will also increase due to untimely collection and transportation. The in-situ disinfection and treatment facilities can take into account small medical institutions such as health rooms and clinics, realize the in-situ harmless treatment of medical waste, and also allow the waste gas and wastewater generated in the treatment process to meet the discharge standards after treatment.

[0003] The patent publication number of the existing patent application is: CN211626166U, and the publication date is October 2, 2020. The name of the patent is "A heat exchange device for high-temperature exhaust gas treatment". The patent includes a shell, an air inlet pipe and an air outlet pipe. The left and right sides of the shell are respectively connected to the air inlet pipe and the air outlet pipe, and the left and right sides of the inner cavity of the shell are provided with a diverter box, and the diverter box is connected to the air inlet pipe and the air outlet pipe. The inner cavity of the shell is provided with a heat exchange tube; the utility model arranges a spiral tube, a shell, a heat exchange tube, a water supply structure and a conveying structure, so that the device has the advantages of being able to reduce the temperature of the high-temperature exhaust gas and effectively utilize the heat in the high-temperature exhaust gas. It solves the problem that when the factory is currently treating high-temperature exhaust gas, the heat contained in the high-temperature exhaust gas is not effectively utilized, and all the heat is lost, resulting in low energy utilization and not meeting energy-saving requirements. It realizes the diversification of energy use and reduces enterprise operation.

[0004] The above application has shortcomings. At present, medical waste disinfection and treatment equipment requires a water treatment system to cool down the high-temperature exhaust gas generated by medical waste. However, while circulating cold and hot water for cooling, the equipment will also produce additional wastewater, resulting in reduced utilization of water resources. At the same time, condensed wastewater will be generated in the exhaust pipe wall during heat exchange. Generally, the condensed wastewater is discharged along the pipe wall for subsequent treatment. However, when the discharge directions of the exhaust gas and the condensed wastewater conflict with each other, this treatment method will result in low collection efficiency of the condensed wastewater. Summary of the invention

[0005] The purpose of the present invention is to provide a hot and cold water circulation device and a medical wastewater treatment system to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A hot and cold water circulation device comprises a water tank, and also comprises a clean water chamber and a sewage chamber, which are distributed up and down in the water tank, a water inlet pipe and a drain pipe are arranged on the outer wall of the clean water chamber, a liquid discharge pipe is arranged on the outer wall of the sewage chamber, a floating filter screen floats above the liquid surface in the clean water chamber and is used to separate the water inlet pipe and the drain pipe, an exhaust gas heat exchange mechanism is installed inside the water tank, and its pipeline passes through the floating filter screen, a liquid collecting elbow is installed at the bottom of the exhaust gas heat exchange mechanism in the sewage chamber, an opening and closing switching component is installed between the floating filter screen and the exhaust gas heat exchange mechanism, and when the floating filter screen descends, the opening and closing switching component is driven to close the air inlet of the exhaust gas heat exchange mechanism and connect the exhaust gas heat exchange mechanism with the liquid collecting elbow.

[0008] Preferably, an annular spray pipe is installed in the water tank at one end of the water inlet pipe, and the annular spray pipe surrounds the exhaust gas heat exchange mechanism.

[0009] Preferably, a spare liquid injection pipe communicating with the water purification chamber is fixedly connected to one side of the water tank, and a water trap is provided on the spare liquid injection pipe.

[0010] Preferably, the exhaust gas heat exchange mechanism includes a lower cover and an upper cover which are distributed up and down in the water tank, the lower cover separates the clean water chamber from the sewage chamber, and a plurality of heat exchange air supply pipes are distributed in a ring between the lower cover and the upper cover, a connecting pipe is installed at the bottom of the lower cover, one side of the connecting pipe is fixedly connected to the air intake pipe, one end of the liquid collecting bend is fixed to the bottom of the connecting pipe, and the liquid collecting bend is S-shaped, and an exhaust pipe is installed on the top of the upper cover.

[0011] Preferably, the opening and closing switching assembly includes a column located between the lower cover and the floating filter screen, the column is rotatably connected to the lower cover, and the bottom end of the column is inserted into a connecting pipe and fixedly connected to a sealing piece that matches the air inlet pipe orifice, a guide groove is provided on the side wall of the column, and a through hole is provided in the center of the floating filter screen for the column to pass through, and a sliding rod matching the guide groove is fixedly connected in the through hole.

[0012] Preferably, an abutment rack is embedded in the outer wall of the heat exchange air supply pipe, the two vertical paths of the guide groove are respectively distributed on both sides of the column, and there is an inclined path between the two vertical paths, the height of the abutment rack corresponds to one of the vertical paths, and the bottom surface of the floating filter is elastically installed with an elastic abutment rod that abuts against the abutment rack.

[0013] Preferably, the floating filter net is provided with a plug hole adapted to fit the heat exchange air supply pipe, the bottom of the floating filter net is fixedly connected with a floating ring, and the inner wall of the floating ring is embedded with a plurality of counterweights.

[0014] Preferably, an air storage cavity is opened inside the column, a piston column is embedded in the air storage cavity, one side of the piston column is fixedly connected to the sliding rod, the air storage cavity is connected to the upper cover through an air pipe, and a one-way valve is installed at the connection point between the air pipe and the upper cover, and a plurality of air vents are opened at the other end at the bottom of the air storage cavity.

[0015] Preferably, the air inlet pipe is higher than the liquid collecting elbow.

[0016] A system for treating medical wastewater comprises the above-mentioned cold and hot water circulation device.

[0017] In the above technical scheme, the water consumption of the equipment is significantly reduced by integrating a water circulation module in the water tank. The separation design of the clean water chamber and the sewage chamber, as well as the installation of a liquid collecting elbow at the bottom of the exhaust gas heat exchange mechanism, separate the gas and liquid during the heat exchange process, realize the effective separation and reuse of water resources, improve the utilization efficiency of water resources, and strictly control the water cost during high-temperature exhaust gas emissions. At the same time, the linkage mechanism of the floating filter and the opening and closing switching component is introduced. While filtering the circulating water, it can also automatically adjust the working state of the exhaust gas heat exchange mechanism by adjusting the water level change in the water tank. When the water level in the water chamber drops, the floating filter screen drops and triggers the opening and closing switching component, closing the air inlet of the exhaust gas heat exchange mechanism to prevent the entry of high-temperature exhaust gas that has not been cooled down, and at the same time opening the channel with the liquid collecting elbow to ensure that the condensed wastewater generated during the heat exchange process can quickly and smoothly enter the sewage chamber. The adaptive adjustment function improves the operating efficiency and stability of the equipment. It can cooperate with medical waste treatment equipment to realize non-contact automatic operation and sewage treatment of the entire process of medical waste and wastewater treatment in small medical institutions, and can also independently treat other medical wastewater generated by small medical institutions.

[0018] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0019] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of a cold and hot water circulation device of the present invention;

[0022] Figure 2 It is an overall cross-sectional view of a hot and cold water circulation device of the present invention;

[0023] Figure 3 This is an enlarged view of point A of a hot and cold water circulation device of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of a water tank in a hot and cold water circulation device of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection between a floating filter screen and an opening and closing switching component in a hot and cold water circulation device of the present invention;

[0026] Figure 6 This is a schematic structural diagram of a column in a hot and cold water circulation device of the present invention;

[0027] Figure 7 It is a structural schematic diagram of an opening and closing switching component in a hot and cold water circulation device of the present invention;

[0028] Figure 8 The present invention is a schematic diagram of the connection between a floating filter screen and a piston column in a hot and cold water circulation device.

[0029] Description of reference numerals:

[0030] 1. Water tank; 101. Clean water chamber; 102. Sewage chamber; 103. Water inlet pipe; 104. Drain pipe; 105. Drain pipe; 106. Annular spray pipe; 2. Floating filter; 201. Through hole; 202. Sliding rod; 203. Plug hole; 204. Floating ring; 205. Counterweight; 3. Exhaust heat exchange mechanism; 301. Lower cover; 302. Upper cover; 303. Heat exchange air supply pipe; 304 , connecting pipe; 305, air inlet pipe; 306, exhaust pipe; 307, abutment rack; 4, liquid collecting elbow pipe; 5, opening and closing switching assembly; 501, column; 502, sealing plate; 503, guide groove; 504, air storage chamber; 505, piston column; 506, air supply pipe; 507, one-way valve; 508, vent; 6, spare liquid injection pipe; 601, water trap; 7, elastic push rod; 701, top spring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0032] See also Figure 1-8A hot and cold water circulation device provided by an embodiment of the present invention comprises a water tank 1, and also comprises a clean water chamber 101 and a sewage chamber 102, which are distributed up and down in the water tank 1, a water inlet pipe 103 and a drain pipe 104 are arranged on the outer wall of the clean water chamber 101, a liquid discharge pipe 105 is arranged on the outer wall of the sewage chamber 102, a floating filter 2 floats on the liquid surface in the clean water chamber 101 and is used to separate the water inlet pipe 103 and the drain pipe 104, an exhaust gas heat exchange mechanism 3 is installed inside the water tank 1, and its pipeline passes through the floating filter 2, a liquid collecting elbow 4 is installed at the bottom of the exhaust gas heat exchange mechanism 3 in the sewage chamber 102, and an opening and closing switching component 5 is installed between the floating filter 2 and the exhaust gas heat exchange mechanism 3. When the floating filter 2 descends, the opening and closing switching component 5 is driven to close the air inlet of the exhaust gas heat exchange mechanism 3, and the exhaust gas heat exchange mechanism 3 is connected with the liquid collecting elbow 4.

[0033] Specifically, during the heat exchange process, the high-temperature exhaust gas enters the exhaust gas heat exchange mechanism 3 in the water tank 1 through the corresponding inlet, and the cold water enters the clean water chamber 101 from the water inlet pipe 103 and accumulates under the floating filter 2. The cold water is in direct contact with the pipeline of the exhaust gas heat exchange mechanism 3, and performs heat exchange with the high-temperature exhaust gas passing through it. After the heat exchange, the exhaust gas temperature is reduced and discharged from the outlet of the exhaust gas heat exchange mechanism 3, while the cold water is heated due to absorbing heat and is finally discharged from the drain pipe 104. Then, the discharged hot water is cooled and flows back to the water tank 1 through the water inlet pipe 103 for recycling. During the heat exchange process, the water vapor in the exhaust gas will condense into water. The condensed waste water is collected through the liquid collecting elbow 4 and flows into the sewage chamber 102. The liquid collecting elbow The design of 4 helps to prevent the condensed waste water from flowing back into the exhaust gas heat exchange mechanism 3, and can also prevent the exhaust gas from being discharged from the bottom through the water seal, so as to ensure the smooth progress of the heat exchange process. Then, in the process of continuous circulation, the size of the water flow in and out of the water tank 1 can be controlled. When the water level in the clean water chamber 101 drops, causing the floating filter 2 to drop accordingly, it will drive the opening and closing switching component 5 to move, and use the change of the opening and closing switching component 5 to close the air inlet of the exhaust gas heat exchange mechanism 3 to prevent the exhaust gas or other impurities from entering the exhaust gas heat exchange mechanism 3. At this time, the channel between the exhaust gas heat exchange mechanism 3 and the liquid collecting elbow 4 is also open, ensuring that the condensed waste water can be smoothly discharged into the sewage chamber 102, and avoiding the rising of the exhaust gas affecting the speed of the condensed waste water falling and discharging.

[0034] Compared with the prior art, the embodiment of the present invention significantly reduces the water consumption of the equipment by integrating a water circulation module in the water tank, separating the clean water chamber from the sewage chamber, and installing a liquid collecting elbow at the bottom of the exhaust gas heat exchange mechanism, so that the gas and liquid are separated during the heat exchange process, and the effective separation and reuse of water resources are realized, the utilization efficiency of water resources is improved, and the water cost during the discharge of high-temperature exhaust gas is strictly controlled. At the same time, the linkage mechanism of the floating filter and the opening and closing switching component is introduced, which can filter the circulating water and automatically adjust the working state of the exhaust gas heat exchange mechanism by adjusting the water level change in the water tank. State, when the water level in the clean water chamber drops, the floating filter screen drops and triggers the opening and closing switching component, closing the air inlet of the exhaust gas heat exchange mechanism to prevent the entry of high-temperature exhaust gas that has not been cooled down, and at the same time opening the channel with the liquid collecting elbow to ensure that the condensed wastewater generated during the heat exchange process can quickly and smoothly enter the sewage chamber. The adaptive adjustment function improves the operating efficiency and stability of the equipment. It can cooperate with medical waste treatment equipment to realize non-contact automatic operation and sewage treatment of the entire process of medical waste and wastewater treatment in small medical institutions, and can also independently treat medical wastewater from small medical institutions.

[0035] In a further embodiment of the present invention, an annular spray pipe 106 is installed at one end of the water inlet pipe 103 in the water tank 1, and the annular spray pipe 106 surrounds the exhaust gas heat exchange mechanism 3. Specifically, the annular spray pipe 106 is designed to be ring-shaped, surrounding the outside of the exhaust gas heat exchange mechanism 3, to ensure that the cold water sprayed from the spray pipe can evenly and comprehensively cover the pipe surface of the exhaust gas heat exchange mechanism 3. Such a layout helps to maximize the contact area between water and exhaust gas, thereby improving the heat exchange efficiency. By adjusting the water level in the water tank 1, the upper half of the clean water chamber 101 is the spray heat exchange zone, and the lower half is the immersion heat exchange zone. When the water column during the spraying process hits the immersion heat exchange zone, it will force the water flow to be turbulent, so that the cold water in the water tank 1 can absorb the heat of the exhaust gas more evenly and efficiently.

[0036] In a further embodiment of the present invention, a spare injection pipe 6 connected to the clean water chamber 101 is fixedly connected to one side of the water tank 1, and a water trap 601 is provided on the spare injection pipe 6, and the water trap 601 is U-shaped. Specifically, the main function of the spare injection pipe 6 is to serve as an emergency or spare water inlet channel when the main water inlet system (i.e., the water inlet pipe 103 or the annular sprinkler pipe 106) fails and cannot meet the demand, allowing the operator to quickly and conveniently inject clean water into the clean water chamber 101 to maintain the normal operation of the system. The main function of the water trap 601 is to prevent external air or dust from entering the clean water chamber 101 through the spare injection pipe 6, thereby maintaining the cleanliness and sealing of the clean water chamber 101. When the spare injection pipe 6 is not in use, a certain amount of water will be maintained in the water trap 601 to form a natural water seal barrier. In this way, even if the external pressure changes or there are tiny gaps, external pollutants can be effectively prevented from entering the clean water chamber 101.

[0037] In a further embodiment of the present invention, the exhaust gas heat exchange mechanism 3 includes a lower cover 301 and an upper cover 302 which are distributed up and down in the water tank 1, the lower cover 301 separates the clean water chamber 101 from the sewage chamber 102, and a plurality of heat exchange air supply pipes 303 are distributed in an annular manner between the lower cover 301 and the upper cover 302, a connecting pipe 304 is installed at the bottom of the lower cover 301, an air intake pipe 305 is fixedly connected to one side of the connecting pipe 304, one end of the liquid collecting elbow 4 is fixed to the bottom of the connecting pipe 304, and the liquid collecting elbow 4 is S-shaped, and an exhaust pipe 306 is installed at the top of the upper cover 302. Specifically, the lower cover 301 is installed between the clean water chamber 101 and the sewage chamber 102, which serves to connect the two chambers. The lower cover 301 has the function of separation. At the same time, the lower cover 301 is also the bottom supporting structure of the entire exhaust gas heat exchange mechanism 3. The connecting pipe 304 at the bottom of the lower cover 301 is responsible for connecting the air inlet pipe 305 and the liquid collecting elbow 4, serving as the entrance for the exhaust gas to enter the heat exchange system, and also as the outlet for collecting condensed waste water. The air inlet pipe 305 is responsible for introducing the high-temperature exhaust gas into the exhaust gas heat exchange mechanism 3. The liquid collecting elbow 4 is designed in an S shape. This shape helps to form a water seal to prevent the condensed waste water in the exhaust gas from directly dripping into the sewage chamber 102, and also prevent the exhaust gas from being discharged into the sewage chamber 102 through the liquid collecting elbow 4, thereby ensuring the smooth progress of the heat exchange. After the heat exchange is completed, the cooled exhaust gas is finally discharged through the exhaust pipe 306.

[0038] In a further embodiment of the present invention, the opening and closing switching component 5 includes a column 501 located between the lower cover 301 and the floating filter screen 2, the column 501 is rotatably connected to the lower cover 301 through a bearing, and the bottom end of the column 501 is inserted into the connecting pipe 304 and fixedly connected with a blocking piece 502 that is adapted to the pipe opening of the air inlet pipe 305, a guide groove 503 is provided on the side wall of the column 501, and a through hole 201 is provided in the center of the floating filter screen 2 for the column 501 to pass through, and a sliding rod 202 matching the guide groove 503 is fixedly connected in the through hole 201. Specifically, the column 501 can rotate freely around its own axis, and the guide groove 503 on the column 501 cooperates with the sliding rod 202. When the floating filter screen 2 descends vertically with the sliding rod 202, the rotation of the column 501 is controlled by pressing the guide groove 503 by the sliding rod 202. When the water level in the water tank 1 is controlled to be low, the floating filter screen 2 sinks, and the sliding rod 202 202 slides in the guide groove 503 and drives the column 501 to rotate to the closed position, so that the sealing piece 502 blocks the pipe opening of the air inlet pipe 305, and the exhaust gas cannot enter the heat exchange system. At this time, since there is no continuously rising exhaust gas in the heat exchange air supply pipes 303, the condensed waste water on the inner wall will fall quickly and gather in the liquid collecting elbow 4, and then be discharged to the sewage chamber 102 through the liquid collecting elbow 4. As the water level rises again, the floating filter screen 2 floats up and pushes the column 501 to rotate in the opposite direction through the sliding rod 202 until the sealing piece 502 and the pipe opening of the air inlet pipe 305 are offset, so that the exhaust gas can normally enter the heat exchange air supply pipes 303 in the water tank 1. This process realizes the automatic opening and closing switching of the exhaust gas channel, which not only ensures the normal operation of the heat exchange system, but also improves the safety and reliability of the device, makes the collection of condensed waste water more efficient and safe, and avoids the exhaust gas from being directly discharged from the sewage chamber 102.

[0039] In a further embodiment of the present invention, an abutment rack 307 is embedded in the outer wall of the heat exchange air supply pipe 303, and the two vertical paths of the guide groove 503 are respectively distributed on both sides of the column 501, and there is an inclined path between the two vertical paths. The height of the abutment rack 307 corresponds to one of the vertical paths, and the height of the vertical path is lower than the other vertical path, and an elastic abutment rod 7 that abuts and cooperates with the abutment rack 307 is elastically installed on the bottom surface of the floating filter screen 2. One end of the elastic abutment rod 7 abuts against the abutment rack 307, and a top spring 701 is installed between the other end and the floating filter screen 2. Specifically, in the initial state, the column 501 is in the open position, the blocking piece 502 does not block the pipe opening of the intake pipe 305, and the exhaust gas can freely enter the heat exchange system. As the water level drops, the floating filter screen 2 drops, and the column 501 is forced to rotate first until the slide bar 202 is in one of the vertical sections of the guide groove 503. On the straight path, the blocking piece 502 blocks the pipe opening of the air inlet pipe 305. When the pipe opening of the air inlet pipe 305 is blocked, the water level continues to drop, and the elastic abutting rod 7 on the bottom surface of the floating filter 2 intermittently abuts against the abutting rack 307. The reciprocating impact of the elastic abutting rod 7 causes the heat exchange air supply pipe 303 to vibrate, further accelerating the sliding of the condensed waste water in the pipe wall, thereby achieving fine adjustment of the working state of the heat exchange air supply pipe 303. When the water level rises to a certain level again, the floating filter 2 is reset to the corresponding height, the elastic abutting rod 7 is separated from the abutting rack 307, and the column 501 rotates in the opposite direction driven by the sliding rod 202. The blocking piece 502 is also staggered with the pipe opening of the air inlet pipe 305, allowing the exhaust gas to enter the heat exchange system again. The heat exchange of the exhaust gas and the recovery of the waste water do not affect each other, and the waste water collection efficiency is high, so that the exhaust gas can be connected to the exhaust gas heat exchange mechanism 3 more quickly.

[0040] In a further embodiment of the present invention, a socket 203 compatible with the heat exchange air supply pipe 303 is provided on the floating filter screen 2, and a floating ring 204 is fixedly connected to the bottom of the floating filter screen 2, and a plurality of counterweights 205 are embedded in the inner wall of the floating ring 204. Specifically, the floating ring 204 and the counterweights 205 cooperate with each other to ensure that the floating filter screen 2 can maintain a horizontal floating state under different water levels and prevent it from excessively tilting or flipping due to water flow fluctuations. The floating filter screen 2 is always above the liquid surface to avoid being immersed in water for a long time. The installation of multiple counterweights 205 allows the floating filter screen 2 to drop quickly after the water level drops, so as to achieve the purpose of quickly adjusting the column 501 to open and close the air inlet pipe 305.

[0041] In a further embodiment of the present invention, an air storage chamber 504 is provided inside the column 501, a piston column 505 is embedded in the air storage chamber 504, one side of the piston column 505 is fixedly connected to the slide bar 202, the air storage chamber 504 is connected to the upper cover 302 through an air delivery pipe 506, and a one-way valve 507 is installed at the connection between one end of the air delivery pipe 506 and the upper cover 302, and a plurality of vent holes 508 are provided at the bottom of the air storage chamber 504 at the other end. Specifically, Since the piston column 505 is fixed together with the floating filter screen 2 by the sliding rod 202, when the floating filter screen 2 descends, it not only blocks the air inlet pipe 305, but also drives the piston column 505 to squeeze the air storage chamber 504 downward, so that the gas stored in the air storage chamber 504 enters the air supply pipe 506 through the air vent 508, and is then discharged into the upper cover 302, and then dispersed to each heat exchange air supply pipe 303 through the upper cover 302, and the discharge of condensed waste water is accelerated by the air flow.

[0042] In a further embodiment of the present invention, the height of the air intake pipe 305 is higher than the liquid collecting bend 4. Specifically, the position of the air intake pipe 305 is higher than the liquid collecting bend 4, which can prevent the waste liquid in the liquid collecting bend 4 used to serve as a water seal from entering the air intake pipe 305, thereby reducing safety hazards while ensuring sealing performance.

[0043] A system for treating medical wastewater comprises the above-mentioned cold and hot water circulation device.

[0044] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hot and cold water circulation device, comprising a water tank (1), It is characterized in that Also includes: A clean water chamber (101) and a sewage chamber (102) are arranged vertically in the water tank (1); a water inlet pipe (103) and a drainage pipe (104) are arranged on the outer wall of the clean water chamber (101); and a liquid discharge pipe (105) is arranged on the outer wall of the sewage chamber (102); A floating filter (2) which floats on the liquid surface in the water purification chamber (101) and is used to separate the water inlet pipe (103) and the drain pipe (104); An exhaust gas heat exchange mechanism (3) is installed inside the water tank (1), and its pipeline runs through the floating filter (2); a liquid collecting elbow (4) is installed at the bottom of the exhaust gas heat exchange mechanism (3) in the sewage chamber (102); and an opening and closing switching component (5) is installed between the floating filter (2) and the exhaust gas heat exchange mechanism (3); When the floating filter (2) descends, the opening and closing switching component (5) is driven to close the air inlet of the exhaust gas heat exchange mechanism (3), and the exhaust gas heat exchange mechanism (3) is connected to the liquid collecting elbow (4).

2. A hot and cold water circulation device according to claim 1, It is characterized in that An annular spray pipe (106) is installed at one end of the water inlet pipe (103) in the water tank (1), and the annular spray pipe (106) surrounds the exhaust gas heat exchange mechanism (3).

3. A hot and cold water circulation device according to claim 1, It is characterized in that A spare liquid injection pipe (6) communicating with the water purification chamber (101) is fixedly connected to one side of the water tank (1), and a water trap (601) is provided on the spare liquid injection pipe (6).

4. A hot and cold water circulation device according to claim 1, It is characterized in that The exhaust gas heat exchange mechanism (3) comprises a lower cover (301) and an upper cover (302) which are distributed in the water tank (1) from top to bottom. The lower cover (301) separates the clean water chamber (101) from the sewage chamber (102), and a plurality of heat exchange air supply pipes (303) are distributed in an annular manner between the lower cover (301) and the upper cover (302). A connecting pipe (304) is installed at the bottom of the lower cover (301), and an air intake pipe (305) is fixedly connected to one side of the connecting pipe (304). One end of the liquid collecting elbow (4) is fixed to the bottom of the connecting pipe (304), and the liquid collecting elbow (4) is S-shaped. An exhaust pipe (306) is installed at the top of the upper cover (302).

5. A hot and cold water circulation device according to claim 4, It is characterized in that The opening and closing switching assembly (5) comprises a column (501) located between the lower cover (301) and the floating filter (2); the column (501) is rotatably connected to the lower cover (301); the bottom end of the column (501) is inserted into the connecting pipe (304) and fixedly connected to a blocking piece (502) that matches the pipe opening of the air intake pipe (305); a guide groove (503) is formed on the side wall of the column (501); a through hole (201) for the column (501) to pass through is formed in the center of the floating filter (2); a sliding rod (202) that matches the guide groove (503) is fixedly connected in the through hole (201).

6. A hot and cold water circulation device according to claim 5, It is characterized in that An abutment rack (307) is embedded in the outer wall of the heat exchange air supply pipe (303), the two vertical paths of the guide groove (503) are respectively distributed on both sides of the column (501), and there is an inclined path between the two vertical paths, the height of the abutment rack (307) corresponds to one of the vertical paths, and an elastic abutment rod (7) that abuts and cooperates with the abutment rack (307) is elastically installed on the bottom surface of the floating filter screen (2).

7. A hot and cold water circulation device according to claim 4, It is characterized in that The floating filter (2) is provided with a plug hole (203) adapted to the heat exchange air supply pipe (303), the bottom of the floating filter (2) is fixedly connected with a floating ring (204), and the inner wall of the floating ring (204) is embedded with a plurality of counterweight blocks (205).

8. A hot and cold water circulation device according to claim 5, It is characterized in that An air storage chamber (504) is provided inside the column (501), a piston column (505) is embedded in the air storage chamber (504), one side of the piston column (505) is fixedly connected to the slide bar (202), the air storage chamber (504) and the upper cover (302) are connected via an air delivery pipe (506), a one-way valve (507) is installed at the connection point between the air delivery pipe (506) and the upper cover (302), and a plurality of air vents (508) are provided at the other end at the bottom of the air storage chamber (504).

9. A hot and cold water circulation device according to claim 4, It is characterized in that The height of the air inlet pipe (305) is higher than the liquid collecting elbow (4).

10. A system for treating medical wastewater, It is characterized in that The invention comprises the hot and cold water circulation device as described in any one of claims 1 to 9.

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