Pollution discharge cooling tank for pollution discharge of normal-pressure hot water boiler

Abstract

The utility model discloses a blow-down cooling tank for blow-down of a normal-pressure hot water boiler, which comprises a cooling tank main body, and the cooling tank main body is provided with a sewage inlet communicated with the normal-pressure hot water boiler, a cold water inlet communicated with an external cold water source, a blow-down outlet communicated with an external water collecting pit and an overflow port communicated with the external water collecting pit; a cooling blow-off pipe is arranged in the cooling tank main body, one end of the cooling blow-off pipe is communicated with the sewage inlet, and the other end of the cooling blow-off pipe extends to the blow-off outlet; and the volume of the cooling tank main body is greater than the single discharge capacity of the normal-pressure hot water boiler. The utility model relates to the technical field of water treatment equipment, and can solve the problems that in the prior art, a buried blowdown cooling pool needs to be arranged for blowdown of a normal-pressure hot water boiler, and resources are wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a sewage cooling tank for sewage discharge of a normal pressure hot water boiler. Background Art

[0002] Atmospheric pressure hot water boilers can be used to heat cold water for use in heating, bathing and other equipment. At present, due to the high temperature of the wastewater from the atmospheric pressure hot water boiler, it is not conducive to environmental protection and needs to be discharged after cooling. The conventional method of discharging wastewater from atmospheric pressure hot water boilers is to construct an underground sewage cooling pool with reinforced concrete outside the atmospheric pressure hot water boiler, and pass cold water into the underground sewage cooling pool to cool the hot sewage from the atmospheric pressure hot water boiler, and then discharge the cooled sewage by gravity drainage.

[0003] The underground sewage cooling pool is large in size, difficult to construct, long in cycle, high in cost, poor in economic efficiency, and has certain limitations in the use of gravity sewage discharge. At the same time, the underground sewage cooling pool also has the problem of large cold water consumption and waste of resources. Therefore, it is necessary to provide a sewage cooling tank for atmospheric pressure hot water boiler sewage discharge, which can solve the problem of the need to set up an underground sewage cooling pool and waste of resources in the prior art for atmospheric pressure hot water boiler sewage discharge. Summary of the invention

[0004] The utility model aims to provide a sewage cooling tank for atmospheric pressure hot water boiler sewage discharge, which can solve the problem of the need to set up an underground sewage cooling pool and waste resources in the prior art for atmospheric pressure hot water boiler sewage discharge.

[0005] The utility model is achieved in this way:

[0006] A sewage cooling tank for discharging sewage from a normal-pressure hot water boiler comprises a cooling tank body, on which a sewage inlet connected to the normal-pressure hot water boiler, a cold water inlet connected to an external cold water source, a sewage outlet connected to an external sump, and an overflow connected to the external sump are provided; a cooling sewage pipe is provided in the cooling tank body, one end of the cooling sewage pipe is connected to the sewage inlet, and the other end of the cooling sewage pipe extends to the sewage outlet; the volume of the cooling tank body is greater than the single sewage discharge volume of the normal-pressure hot water boiler.

[0007] The sewage inlet is located at the bottom of one side of the cooling tank body, the sewage outlet is located at the bottom of the cooling tank body, the cooling sewage pipe is arranged in an inverted U-shaped structure between the sewage inlet and the sewage outlet, and the upper end of the cooling sewage pipe extends to the top of the cooling tank body.

[0008] A control component is provided on the cooling tank body, which includes a controller arranged on the outer wall of the cooling tank body and a first solenoid valve, a second solenoid valve and a third solenoid valve electrically connected to the controller; the first solenoid valve is installed on the pipe between the cold water inlet and the external cold water source, the second solenoid valve is installed on the pipe between the overflow port and the external sump, and the third solenoid valve is installed on the pipe between the sewage outlet and the external sump.

[0009] A temperature sensor is arranged in the cooling tank body. The temperature sensor is located above the sewage inlet. The temperature sensor is electrically connected to the controller.

[0010] The cold water inlet is located at the upper part of one side of the cooling tank body and above the sewage inlet, and the overflow port is located at the upper part of the other side of the cooling tank body, and the height of the overflow port does not exceed the height of the cold water inlet.

[0011] A water return bend is formed on the pipe between the sewage outlet and the external sump, and the water return bend is a U-shaped structure.

[0012] A water inlet pipe is arranged in the cooling tank body, the horizontal section of the water inlet pipe of the inverted L-shaped structure is communicated with the cold water inlet, and the vertical section of the water inlet pipe extends downward.

[0013] The top of the cooling tank body is provided with a vent outlet, and a vent valve is provided on the vent outlet.

[0014] The volume of the cooling tank body is 3-4 times the single sewage discharge volume of the atmospheric pressure hot water boiler.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model is provided with a cooling tank body, which adopts a cooling tank body that can be processed and manufactured in a standardized manner to replace the buried sewage cooling pool. There is no need for reinforced concrete construction of the buried sewage cooling pool. While ensuring the cooling of the sewage from the normal pressure hot water boiler, it solves the problems of the buried sewage cooling pool being large in size, difficult to construct, long in period, high in cost, and poor in economy.

[0017] 2. The utility model is provided with a cooling tank body, the volume of which is 3-4 times the single sewage discharge volume of the atmospheric pressure hot water boiler. Compared with the underground sewage cooling pool, which is smaller in volume, the cooling tank body is guaranteed to have enough space for mixing the single sewage discharge volume of the atmospheric pressure hot water boiler with cold water. At the same time, the mixed sewage can be cooled and recycled as a cold source for the next sewage discharge, thereby achieving the purpose of saving water resources.

[0018] 3. The utility model is provided with a control component, which controls the opening and closing of the solenoid valve based on the sewage temperature and overflow pressure in the cooling tank body through the controller, thereby improving the operating safety of the cooling tank body. The normally open solenoid valve at the overflow port ensures the overflow sewage discharge function, effectively avoiding the limitations of gravity sewage discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a structural schematic diagram of a sewage cooling tank for sewage discharge of a normal pressure hot water boiler.

[0020] In the figure, 1 is a cooling tank body, 101 is a sewage inlet, 102 is a cold water inlet, 103 is a sewage outlet, 104 is an overflow outlet, 105 is a cooling sewage pipe, 106 is a temperature sensor, 107 is a water inlet pipe, 108 is a ventilation outlet, 2 is a normal pressure hot water boiler, 301 is a controller, 302 is a first solenoid valve, 303 is a second solenoid valve, 304 is a third solenoid valve, and 4 is a water return bend. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Please see attached Figure 1 A sewage cooling tank for discharging sewage from a normal-pressure hot water boiler comprises a cooling tank body 1, on which a sewage inlet 101 connected to a normal-pressure hot water boiler 2, a cold water inlet 102 connected to an external cold water source, a sewage outlet 103 connected to an external sump, and an overflow port 104 connected to the external sump are provided; a cooling sewage pipe 105 is provided in the cooling tank body 1, one end of the cooling sewage pipe 105 is connected to the sewage inlet 101, and the other end of the cooling sewage pipe 105 extends to the sewage outlet 103; the volume of the cooling tank body 1 is greater than the single sewage discharge volume of the normal-pressure hot water boiler 2.

[0023] The cooling tank body 1 that can be processed and manufactured in a standardized manner is used to replace the underground sewage cooling pool. While ensuring the cooling of the sewage of the atmospheric pressure hot water boiler 2, it solves the problems of the underground sewage cooling pool being large in size, difficult to construct, long in cycle, high in cost, and poor in economy. The volume of the cooling tank body 1 can be adaptively manufactured according to the single sewage discharge volume of the atmospheric pressure hot water boiler 2 and the amount of cold water required for cooling to ensure an effective cooling effect.

[0024] The hot sewage from the atmospheric hot water boiler 2 enters the cooling tank body 1 through the sewage inlet 101 and the cooling sewage pipe 105, and the external cold water source enters the cooling tank body 1 through the cold water inlet 102 and mixes with the hot sewage to quickly cool the hot sewage. The mixed sewage after cooling can be used as a cold source for the hot sewage for the next sewage discharge, and the mixed sewage can be recycled, which greatly reduces the consumption of cold water and reduces resource waste.

[0025] By setting the overflow port 104, the liquid can overflow and drain automatically when the liquid level in the cooling tank body 1 reaches the setting height of the overflow port 104. Compared with the traditional gravity drainage, it has a wider application range.

[0026] The sewage inlet 101 is located at the bottom of one side of the cooling tank body 1, the sewage outlet 103 is located at the bottom of the cooling tank body 1, and the cooling sewage pipe 105 is arranged in an inverted U-shaped structure between the sewage inlet 101 and the sewage outlet 103, and the upper end of the cooling sewage pipe 105 extends to the top of the cooling tank body 1.

[0027] The cooling sewage pipe 105 introduces sewage from the bottom of the cooling tank body 1 and flows upward to the top, then flows back to the bottom of the cooling tank body 1 and enters the cooling tank body 1, forming a liquid level height difference, which can effectively isolate the water in the cooling tank body 1 from being directly connected to the water of the atmospheric pressure hot water boiler 2, thereby avoiding the occurrence of poor sewage discharge of the atmospheric pressure hot water boiler 2, and also preventing hot air from escaping through the overflow port 104.

[0028] The cooling tank body 1 is provided with a control component, which includes a controller 301 arranged on the outer wall of the cooling tank body 1 and a first solenoid valve 302, a second solenoid valve 303 and a third solenoid valve 304 electrically connected to the controller 301; the first solenoid valve 302 is installed on the pipe between the cold water inlet 102 and the external cold water source, the second solenoid valve 303 is installed on the pipe between the overflow port 104 and the external sump, and the third solenoid valve 304 is installed on the pipe between the sewage outlet 103 and the external sump.

[0029] Preferably, the controller 301 may be a computer control device in the prior art, which is used to control the opening and closing of the first solenoid valve 302 , the second solenoid valve 303 and the third solenoid valve 304 in a linkage manner.

[0030] The first solenoid valve 302 is in a normally closed state, and the opening and closing conditions of the first solenoid valve 302 are the difference between the sewage temperature in the cooling tank body 1 and the preset temperature threshold. Since the second solenoid valve 303 is installed at the overflow port 104, the second solenoid valve 303 is in a normally open state to ensure the overflow drainage function. The second solenoid valve 303 can be a pressure-type solenoid valve. When the water flows through the overflow port 104, the second solenoid valve 303 converts the pressure into an electrical signal and sends it to the controller 301, so that the controller 301 controls the third solenoid valve 304 to open. The third solenoid valve 304 is in a normally closed state, and the opening condition of the third solenoid valve 304 is the electrical signal of the second solenoid valve 303.

[0031] The cooling tank body 1 is provided with a temperature sensor 106 . The temperature sensor 106 is located above the sewage inlet 101 . The temperature sensor 106 is electrically connected to the controller 301 .

[0032] The temperature sensor 106 is used to detect the sewage temperature in the cooling tank body 1. The controller 301 compares the sewage temperature detected by the temperature sensor 106 with a preset temperature threshold, thereby opening or closing the first solenoid valve 302 according to the comparison result.

[0033] The cold water inlet 102 is located at an upper part of one side of the cooling tank body 1 and above the sewage inlet 101 , and the overflow port 104 is located at an upper part of the other side of the cooling tank body 1 , and the height of the overflow port 104 does not exceed the height of the cold water inlet 102 .

[0034] The cold water inlet 102 is located at the upper part of the cooling tank body 1, and the sewage inlet 101 is located at the lower part of the cooling tank body 1. The flow directions of cold water and hot sewage are different, which is conducive to the full mixing of cold water and hot sewage, so as to achieve the purpose of efficiently cooling the hot sewage.

[0035] The overflow port 104 is located at the upper part of the cooling tank body 1, and its height can be adaptively set according to actual use requirements to ensure that when the liquid level of the cooling tank body 1 reaches the overflow port 104, overflow and drainage are ensured, thereby ensuring the operation safety of the cooling tank body 1 and preventing sewage from flowing back through the cold water inlet 102. The overflow port 104 can also be used as a sewage vent to ensure the pressure in the cooling tank body 1 is stable.

[0036] A water trap 4 is formed on the pipe between the sewage outlet 103 and the external sump, and the water trap 4 is a U-shaped structure.

[0037] Preferably, a dirt cleaning port can be provided at the water return bend 4 to facilitate manual regular operations such as descaling, boiler maintenance, and boiler shutdown and drainage.

[0038] A water inlet pipe 107 is provided in the cooling tank body 1 . The horizontal section of the water inlet pipe 107 of an inverted L-shaped structure is connected to the cold water inlet 102 , and the vertical section of the water inlet pipe 107 extends downward.

[0039] The water inlet pipe 107 with an inverted L-shaped structure guides the cold water downward when it flows in, which can effectively isolate the water in the cooling tank body 1 from being directly connected to the cold water, thereby avoiding the occurrence of poor cold water supply.

[0040] A vent outlet 108 is provided on the top of the cooling tank body 1 , and a vent valve is provided on the vent outlet 108 .

[0041] The vent outlet 108 is used to discharge the hot air in the cooling tank body 1. The vent valve can be a normally open one-way valve, or can be opened and closed by the controller 301 according to the sewage temperature linkage control to ensure the pressure in the cooling tank body 1 is stable.

[0042] The volume of the cooling tank body 1 is 3-4 times the single sewage discharge volume of the atmospheric pressure hot water boiler 2, ensuring that the cooling tank body 1 has sufficient space for mixing the single sewage discharge volume of the atmospheric pressure hot water boiler 2 with cold water, and at the same time, it is convenient for the mixed sewage to be cooled and recycled as a cold source for the next sewage discharge, thereby achieving the purpose of saving water resources.

[0043] The atmospheric pressure hot water boiler 2 is a conventional atmospheric pressure hot water boiler for heating, bathing and other equipment. The single discharge volume of the atmospheric pressure hot water boiler 2 is determined according to the parameter requirements of the specific equipment manufacturer. According to the single discharge volume of the atmospheric pressure hot water boiler 2 and the dischargeable temperature value of the boiler sewage (the specification requires not more than 40°C), the specific heat capacity formula (Q=cm△t C) is used to calculate the amount of cold water required to meet the minimum sewage temperature discharge standard (the cold water temperature in winter is a constant), and the single discharge volume and the volume of cold water are comprehensively considered. The volume of the cooling tank body 1 is preferably 3-4 times the single discharge volume of the atmospheric pressure hot water boiler 2.

[0044] Please see attached Figure 1 , the working process and working principle of the utility model are:

[0045] The atmospheric hot water boiler 2 is connected to the sewage inlet 101 of the cooling tank body 1 through the sewage pipe, so that the sewage enters the cooling sewage pipe 105 through the sewage inlet 101 and enters the cooling tank body 1 after passing through the inverted U-shaped cooling sewage pipe 105.

[0046] The hot sewage discharged for the first time is cooled after passing through the cooling sewage pipe 105 and stored in the cooling tank body 1 as a cold source for cooling the hot sewage discharged for the next time. When the sewage is discharged for the next time, it is cooled again after passing through the cooling sewage pipe 105 and mixed with the cooled sewage discharged for the first time to be cooled again.

[0047] The temperature sensor 106 in the cooling tank body 1 detects the sewage water temperature in the cooling tank body 1. A temperature threshold can be set in the controller 301 to start the first solenoid valve 302 in linkage. When the sewage water temperature in the cooling tank body 1 exceeds the temperature threshold, the first solenoid valve 302 is started, and water is supplied to the cooling tank body 1 through the cold water inlet 102 from an external cold water source to cool the sewage in the cooling tank body 1. When the sewage water temperature in the cooling tank body 1 drops to the temperature threshold, the first solenoid valve 302 is closed to stop the cold water input.

[0048] Preferably, the first solenoid valve 302 can be set with delayed start and delayed closing time to avoid frequent operation, thereby improving the opening and closing reliability and service life of the first solenoid valve 302 while ensuring the cooling effect.

[0049] The sewage in the cooling tank body 1 is cooled and recycled. In the subsequent sewage discharge of the atmospheric pressure hot water boiler 2, the sewage is cooled by the sewage cooled in the cooling tank body 1 to ensure that the water temperature of the sewage in the cooling tank body 1 is lower than 40°C after cooling, until the liquid level height of the cooling tank body 1 exceeds the overflow port 104.

[0050] The sewage generates pressure on the second solenoid valve 303 on the overflow port 104, and the second solenoid valve 303 transmits an electrical signal to the controller 301. The controller 301 opens the third solenoid valve 304 in conjunction, so that the sewage overflows from the overflow port 104 to the external sump, and is discharged from the bottom sewage outlet 103 through the pipe to the external sump.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blowdown cooling tank for blowdown of a normal pressure hot water boiler, characterized by: The cooling tank body (1) comprises a sewage inlet (101) connected to a normal-pressure hot water boiler (2), a cold water inlet (102) connected to an external cold water source, a sewage outlet (103) connected to an external sump, and an overflow outlet (104) connected to the external sump; a cooling sewage pipe (105) is provided inside the cooling tank body (1); one end of the cooling sewage pipe (105) is connected to the sewage inlet (101), and the other end of the cooling sewage pipe (105) extends to the sewage outlet (103); the volume of the cooling tank body (1) is greater than the single sewage discharge volume of the normal-pressure hot water boiler (2).

2. The sewage cooling tank for atmospheric pressure hot water boiler sewage discharge according to claim 1 is characterized in that: The sewage inlet (101) is located at the bottom of one side of the cooling tank body (1), the sewage outlet (103) is located at the bottom of the cooling tank body (1), the cooling sewage pipe (105) is arranged in an inverted U-shaped structure between the sewage inlet (101) and the sewage outlet (103), and the upper end of the cooling sewage pipe (105) extends to the top of the cooling tank body (1).

3. The sewage cooling tank for atmospheric pressure hot water boiler sewage discharge according to claim 1 or 2, characterized in that: The cooling tank body (1) is provided with a control component, which includes a controller (301) arranged on the outer wall of the cooling tank body (1) and a first solenoid valve (302), a second solenoid valve (303) and a third solenoid valve (304) electrically connected to the controller (301); the first solenoid valve (302) is installed on the pipeline between the cold water inlet (102) and the external cold water source, the second solenoid valve (303) is installed on the pipeline between the overflow port (104) and the external sump, and the third solenoid valve (304) is installed on the pipeline between the sewage outlet (103) and the external sump.

4. The sewage cooling tank for atmospheric pressure hot water boiler sewage discharge according to claim 3 is characterized in that: A temperature sensor (106) is provided in the cooling tank body (1). The temperature sensor (106) is located above the sewage inlet (101). The temperature sensor (106) is electrically connected to the controller (301).

5. The sewage cooling tank for atmospheric pressure hot water boiler sewage discharge according to claim 1 is characterized in that: The cold water inlet (102) is located at an upper portion of one side of the cooling tank body (1) and above the sewage inlet (101), and the overflow port (104) is located at an upper portion of the other side of the cooling tank body (1), and the height of the overflow port (104) does not exceed the height of the cold water inlet (102).

6. The sewage cooling tank for atmospheric pressure hot water boiler sewage discharge according to claim 1 or 2, characterized in that: A water return bend (4) is formed on the pipe between the sewage outlet (103) and the external sump, and the water return bend (4) is a U-shaped structure.

7. The sewage cooling tank for atmospheric pressure hot water boiler sewage discharge according to any one of claims 1, 2 and 5, characterized in that: A water inlet pipe (107) is provided in the cooling tank body (1), the horizontal section of the water inlet pipe (107) having an inverted L-shaped structure is connected to the cold water inlet (102), and the vertical section of the water inlet pipe (107) extends downward.

8. The sewage cooling tank for atmospheric pressure hot water boiler sewage discharge according to any one of claims 1, 2 and 5, characterized in that: The top of the cooling tank body (1) is provided with a vent outlet (108), and a vent valve is provided on the vent outlet (108).

9. The sewage cooling tank for atmospheric pressure hot water boiler sewage discharge according to claim 1 is characterized in that: The volume of the cooling tank body (1) is 3-4 times the single sewage discharge volume of the atmospheric pressure hot water boiler (2).

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