A waste liquid neutralization device

Abstract

This application discloses a waste liquid neutralization device, relating to the field of cleaning waste liquid treatment technology, comprising: a storage tank; a manhole provided on the storage tank; a water inlet pipe provided on the storage tank, with an inlet valve on the water inlet pipe; a filter assembly provided inside the storage tank, the filter assembly including a filter shell, the water inlet pipe connected to the bottom of the filter shell, the top of the filter shell located inside the manhole, spiral guide vanes provided inside the filter shell, and a filter screen provided on the top of the filter shell; an outlet pipe provided on the storage tank, connected to a sewage pump, with a three-way valve provided at the outlet of the sewage pump; a backwashing pipeline also provided at one end of the storage tank, connected to the three-way valve; and an aeration pipe provided on the storage tank for connecting to an external air source, with an aeration valve on the aeration pipe. This solves the existing problems, achieving neutralization treatment of heat exchanger cleaning waste liquid, realizing online and environmentally friendly cleaning of heat exchangers, and achieving environmentally friendly discharge of treated wastewater.

Description

Technical Field

[0001] This application relates to the field of cleaning waste liquid treatment technology, and in particular to a waste liquid neutralization device. Background Technology

[0002] Heat exchangers, as key equipment in industries such as nuclear power, thermal power, heating, and chemical engineering, primarily function to cool their hot media systems using cooling water, maintaining the normal and efficient operation of the equipment. Improving and maintaining the cleanliness of heat exchangers can reduce the temperature difference between the heat exchanger terminals, increase heat exchange efficiency, save plant power consumption, and ensure the safe operation of the cooling system.

[0003] The new and efficient cleaning method currently in use is electromagnetic pulse cleaning. Electromagnetic pulse cleaning enables online cleaning of heat exchangers without disassembly. However, since the heat exchanger is mostly filled with warm water, it is prone to scaling. Ordinary physical cleaning can only remove debris inside the heat exchanger, while hard scale on the plates requires the addition of chemical agents for dissolution and cleaning. This chemical cleaning solves the scaling problem of heat exchangers, allowing them to maintain a high-efficiency heat exchange state.

[0004] In recent years, with the implementation of environmental protection policies, the issue of wastewater treatment has become increasingly important.

[0005] To address existing cleaning issues, there is a need for a scientifically designed, safe, stable, practical, and convenient heat exchanger cleaning waste liquid neutralization and treatment device to achieve online and environmentally friendly cleaning of heat exchangers. Utility Model Content

[0006] To address the aforementioned problems, achieve neutralization of heat exchanger cleaning wastewater, realize online and environmentally friendly cleaning of heat exchangers, and achieve environmentally friendly wastewater discharge, this application provides a wastewater neutralization device.

[0007] The waste liquid neutralization device provided in this application adopts the following technical solution.

[0008] A waste liquid neutralization device includes: a storage tank;

[0009] The storage tank is equipped with a manhole;

[0010] The liquid storage tank is equipped with a water inlet pipe and a water inlet valve. The liquid storage tank is equipped with a filter assembly, which includes a filter shell. The water inlet pipe is connected to the bottom of the filter shell. The top of the filter shell is located inside the manhole. The filter shell is equipped with spiral guide vanes and a filter screen on the top of the filter shell.

[0011] The storage tank is equipped with a water outlet pipe, which is connected to a sewage pump. A three-way valve is installed at the outlet of the sewage pump. A backwashing pipeline is also installed at one end of the storage tank, which is connected to the three-way valve.

[0012] The storage tank is equipped with an aeration pipe connected to an external air source, and an aeration valve is installed on the aeration pipe.

[0013] By adopting the above technical solution, the cleaning wastewater can enter the storage tank through the inlet pipe, buffering it and allowing for neutralization of the previous heat exchanger's cleaning wastewater when cleaning the next heat exchanger, thus improving cleaning efficiency. The filter assembly, located inside the manhole, prevents foreign objects from entering during wastewater neutralization and chemical addition, and filters out large particles as they enter, concentrating and cleaning them to protect the environment. The backwashing pipeline allows for backwashing of the storage tank as needed, ensuring its cleanliness. An aeration pipe introduces compressed air during wastewater neutralization, creating turbulence and accelerating the neutralization process, preventing over-neutralization due to powder deposition.

[0014] Optionally, the manhole includes a short cylindrical section disposed on the liquid storage tank. A manhole flange is disposed on the top of the short cylindrical section, and a manhole cover is hinged to the short cylindrical section. A plurality of quick-locking assemblies are disposed circumferentially on the short cylindrical section. Each quick-locking assembly includes a swing rod with its bottom hinged to the short cylindrical section. An abutment sleeve is sleeved on the swing rod, and a rotating handle is threaded on the top of the swing rod. The rotating handle is used to press down the abutment sleeve so that the bottom of the abutment sleeve abuts against the manhole cover, thereby pressing the manhole cover onto the top of the short cylindrical section.

[0015] By adopting the above technical solution, through the setting of the quick-lock component, and through the threaded engagement of the rotating handle and the swing rod, the mating sleeve is pressed against the manhole cover, so that the manhole cover is tightly fastened to the short cylinder section, thereby closing the manhole. To open, simply loosen the rotating handle and swing the swing rod in all directions, and the manhole cover can be flipped open. The opening and closing operation of the manhole is simple and reliable.

[0016] Optionally, a fixed flange is provided on the top of the filter housing, the filter screen is placed on the fixed flange, the connecting flange is pressed onto the filter screen, and bolted to the fixed flange.

[0017] Optionally, a splash guard ring is provided above the spiral guide vanes inside the filter housing.

[0018] By adopting the above technical solution and setting the anti-splash guard ring, the cleaning waste liquid can be effectively prevented from splashing due to excessive flow rate when it enters the filter shell from the inlet pipe, thus reducing the impact.

[0019] Optionally, the storage tank is equipped with a level gauge.

[0020] By adopting the above technical solution and installing a level gauge, it is convenient to observe the liquid level in the storage tank.

[0021] Optionally, the storage tank is provided with an overflow pipe, and the overflow pipe is provided with an overflow valve.

[0022] By adopting the above technical solution, and by setting up overflow pipes and overflow valves, excessive pressure inside the storage tank is prevented, thus ensuring operational safety.

[0023] Optionally, the storage tank is provided with a sampling port, and a sampling valve is provided at the sampling port.

[0024] By adopting the above technical solution, the sampling port and sampling valve are designed to facilitate the sampling and testing of cleaning waste liquid in the storage tank, thus improving convenience.

[0025] Optionally, a lifting ring is provided on the top of the liquid storage tank.

[0026] By adopting the above technical solution, the lifting rings facilitate the hoisting and relocation of this liquid storage tank.

[0027] Optionally, the bottom of the storage tank is provided with a base, and the sewage pump is mounted on the base via a sewage pump mounting bracket.

[0028] By adopting the above technical solution, the base facilitates support for the liquid storage tank.

[0029] Optionally, the bottom of the liquid storage tank is provided with support wheels, which include two braked directional wheels at one end and two braked swivel wheels at the other end.

[0030] By adopting the above technical solution, and by using braked directional wheels and braked swivel wheels, the waste liquid neutralization device of this application can be easily moved.

[0031] In summary, this application includes at least the following beneficial effects:

[0032] 1. In this application, the storage tank allows cleaning wastewater to enter through the inlet pipe and buffer, enabling neutralization of the previous heat exchanger's cleaning wastewater when cleaning the next heat exchanger, thus improving cleaning efficiency. The filter assembly, located inside the manhole, prevents foreign matter from entering during wastewater neutralization and chemical addition, and filters out large particles as they enter, concentrating and cleaning them to protect the environment. The backwashing pipeline allows for backwashing of the storage tank as needed, ensuring its cleanliness. An aeration pipe introduces compressed air during wastewater neutralization, creating turbulence and accelerating the neutralization process, preventing over-neutralization due to powder deposition.

[0033] 2. In this application, by setting up a quick-lock assembly, the screw engagement between the rotating handle and the swing rod presses the manhole cover tightly against the short cylinder section, thereby closing the manhole. To open, simply loosen the rotating handle and swing the swing rod in all directions, and the manhole cover will flip open. The opening and closing operation of the manhole is simple and reliable. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a waste liquid neutralization device.

[0036] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure along section line AA.

[0037] Figure 3 yes Figure 2 A magnified schematic diagram of part A in the middle.

[0038] Figure 4 This is a top view schematic diagram of a waste liquid neutralization device.

[0039] Explanation of reference numerals in the attached drawings: 1. Storage tank; 2. Base; 3. Directional wheel; 4. Caster wheel; 5. Short cylindrical section; 6. Manhole cover; 7. Swing rod; 8. Abutment sleeve; 9. Rotary handle; 10. Inlet pipe; 11. Inlet valve; 12. Filter housing; 13. Spiral guide vane; 14. Splash guard ring; 15. Filter screen; 16. Connecting flange; 17. Bolt; 18. Nut; 19. Outlet pipe; 20. Sewage pump; 21. Three-way valve; 22. Sewage pump mounting bracket; 23. Backwash pipeline; 24. Aeration pipe; 25. Level gauge; 26. Overflow pipe; 27. Sampling valve; 28. Lifting ring. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] The following is in conjunction with the appendix Figures 1 to 4 This application will be described in further detail.

[0042] This application discloses a waste liquid neutralization device.

[0043] Reference Figures 1 to 4 A waste liquid neutralization device includes: a storage tank 1, a filter assembly, and a sewage pump 20.

[0044] The bottom of the storage tank 1 is provided with a base 2, which facilitates the support of the storage tank 1. The bottom of the base 2 is provided with support wheels, including two braked directional wheels 3 at one end and two braked universal wheels 4 at the other end. The braked directional wheels 3 and braked universal wheels 4 facilitate the transfer of the waste liquid neutralization device of this application.

[0045] A manhole is provided on the storage tank 1, comprising a short cylindrical section 5, a manhole cover 6, and quick-locking components. The short cylindrical section 5 is mounted on the storage tank 1, and a manhole flange is provided on the top of the short cylindrical section 5. The manhole cover 6 is hinged to the short cylindrical section 5 and is provided with an operating handle. The manhole cover 6 can swing and lock onto the top of the short cylindrical section 5 to achieve a seal. Six quick-locking components are arranged circumferentially on the short cylindrical section 5. Each quick-locking component includes a swing rod 7 with its bottom hinged to the short cylindrical section 5. An abutment sleeve 8 is fitted on the swing rod 7, and a rotating handle 9 is threaded on the top of the swing rod 7. The rotating handle 9 is used to press down the abutment sleeve 8, so that the bottom of the abutment sleeve 8 abuts against the manhole cover 6, thus locking the manhole cover 6 onto the top of the short cylindrical section 5. By using the quick-lock assembly, the screw engagement between the rotating handle 9 and the swing rod 7 presses the abutment sleeve 8 against the manhole cover 6, so that the manhole cover 6 is tightly fastened to the short cylinder section 5, thus closing the manhole. To open, simply loosen the rotating handle 9 and swing the swing rod 7 in all directions, and the manhole cover 6 can be flipped open. The opening and closing operation of the manhole is simple and reliable.

[0046] A water inlet pipe 10 is installed on the storage tank 1, and a water inlet valve 11 is installed on the water inlet pipe 10. A filter assembly is installed inside the storage tank 1. The filter assembly includes a filter housing 12. The water inlet pipe 10 is connected to the bottom of the filter housing 12, and the top of the filter housing 12 is located inside the manhole. A spiral guide vane 13 is installed inside the filter housing 12, and a splash guard 14 is installed above the spiral guide vane 13 inside the filter housing 12. The splash guard 14 effectively prevents the cleaning waste liquid from splashing due to excessive flow rate when it enters the filter housing 12 from the water inlet pipe 10, thus reducing the impact. A filter screen 15 is installed on the top of the filter housing 12, and a fixed flange is installed on the top of the filter housing 12. The filter screen 15 is installed on the fixed flange, and a connecting flange 16 is pressed onto the filter screen 15 and connected to the fixed flange with bolts 17 and nuts 18.

[0047] One end of the storage tank 1 is provided with a water outlet pipe 19, which is connected to a sewage pump 20. The outlet of the sewage pump 20 is provided with a three-way valve 21, and the sewage pump 20 is mounted on the base 2 via a sewage pump mounting bracket 22.

[0048] One end of the storage tank 1 is also equipped with a backwashing pipeline 23, which is connected to a three-way valve 21.

[0049] The storage tank 1 is equipped with an aeration pipe 24 connected to an external air source, and an aeration valve is installed on the aeration pipe 24.

[0050] A liquid level gauge 25 is installed on the liquid storage tank 1, which makes it easy to observe the liquid level in the liquid storage tank 1.

[0051] The storage tank 1 is equipped with an overflow pipe 26 and an overflow valve. The overflow pipe 26 and the overflow valve are designed to prevent excessive pressure in the storage tank 1 and ensure operational safety.

[0052] The level gauge 25 and overflow pipe 26 allow for a direct assessment of the liquid level during waste liquid collection, and also prevent excessive liquid injection during the cleaning of large heat exchangers, which could cause the cleaning agent to overflow and damage the ground or injure workers.

[0053] A sampling port is provided on the storage tank 1, and a sampling valve 27 is provided at the sampling port. The sampling port and the sampling valve 27 are provided to facilitate the sampling and testing of cleaning waste liquid in the storage tank 1 and improve convenience.

[0054] The top of the liquid storage tank 1 is equipped with a lifting ring 28, which facilitates the lifting and transfer of the liquid storage tank 1.

[0055] In this application, the storage tank 1 allows cleaning wastewater to enter through the inlet pipe 10, buffering the wastewater and enabling neutralization of the previous heat exchanger's cleaning wastewater when cleaning the next heat exchanger, thus improving cleaning efficiency. The filter assembly, located inside the manhole, prevents foreign objects from entering during wastewater neutralization and chemical addition, and filters out large particles as they enter, concentrating and cleaning them to protect the environment. The backwash pipe 23 allows for backwashing of the storage tank 1 as needed, ensuring its cleanliness. The aeration pipe 24 introduces compressed air during wastewater neutralization, creating turbulence and accelerating the neutralization process, preventing over-neutralization due to powder deposition.

[0056] The implementation measures are as follows:

[0057] 1. Preparations before cleaning:

[0058] Before chemical cleaning the heat exchanger, push the waste liquid neutralization device to the vicinity of the heat exchanger to be cleaned, lock both the directional wheel 3 brake and the universal wheel 4 brake, connect the water inlet valve 11 to the drain port of the cleaning device; the three-way valve 21 can be connected to the designated drain location through the drain pipe; the aeration valve is connected to the on-site air source inlet; the power supply of the drain pump 20 is connected to the on-site maintenance power box or cleaning control cabinet; the overflow port is connected to the drain pipe at the outlet of the three-way valve 21.

[0059] 2. Waste liquid neutralization process:

[0060] 1) After chemical cleaning is completed, switch the three-way valve 21 of the waste liquid neutralization device to the closed mode, the sampling valve 27 to the closed mode, the aeration valve to the closed mode, and the water inlet valve 11 to the open mode. Switch the cleaning device to the sewage discharge mode. The heat exchanger cleaning waste liquid is discharged to the waste liquid neutralization device through the cleaning device. At the same time, observe the liquid level of the liquid level gauge 25. When the liquid level reaches the upper limit of the safe liquid level of the storage tank 1, or when the waste liquid is discharged, close the water inlet valve 11.

[0061] 2) Open the manhole and aeration valve, add an appropriate amount of neutralizing agent to the storage tank 1 while aerating and neutralizing. After neutralizing for 20-30 minutes, take a sample through the sampling valve 27 to test the pH value of the solution. Adjust the amount of agent added according to the pH value until the pH value is within the specified discharge range.

[0062] 3) Once the pH value is within the specified discharge range, switch the three-way valve 21 to connect the outlet of the sewage pump 20 with the discharge location, turn on the sewage pump 20, discharge the neutralized solution to the designated location, and close the aeration control valve.

[0063] 4) Open the manhole cover 6 and check whether the filter screen 15 of the waste liquid neutralization device needs to be cleaned. If it needs to be cleaned, remove the bolts 17 and nuts 18, take out the filter screen 15, clean it, and then reinstall it.

[0064] 3. Backwashing of waste liquid tank:

[0065] If the waste liquid tank needs backwashing, switch the three-way valve 21 to the closed mode, open the valve on the backwash pipeline 23, add clean water to the storage tank 1, open the aeration valve for rinsing, and after rinsing, switch the three-way valve 21 to connect the outlet of the sewage pump 20 with the sewage discharge point, open the sewage pump 20, and discharge the backwash water to the designated sewage discharge point.

[0066] In the description of this utility model, it should be understood that the terms "bottom," "top," "above," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the term "connection" should be interpreted broadly. For example, it can refer to a mechanical connection or an electrical connection, or it can refer to the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0067] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A waste liquid neutralization device, characterized in that, include: Storage tank; The storage tank is equipped with a manhole; The liquid storage tank is equipped with a water inlet pipe and a water inlet valve. The liquid storage tank is equipped with a filter assembly, which includes a filter shell. The water inlet pipe is connected to the bottom of the filter shell. The top of the filter shell is located inside the manhole. The filter shell is equipped with spiral guide vanes and a filter screen on the top of the filter shell. The storage tank is equipped with a water outlet pipe, which is connected to a sewage pump. A three-way valve is installed at the outlet of the sewage pump. A backwashing pipeline is also installed at one end of the storage tank, which is connected to the three-way valve. The storage tank is equipped with an aeration pipe connected to an external air source, and an aeration valve is installed on the aeration pipe.

2. The waste liquid neutralization device according to claim 1, characterized in that, The manhole includes a short cylindrical section mounted on the storage tank. A manhole flange is provided at the top of the short cylindrical section, and a manhole cover is hinged to the short cylindrical section. Several quick-locking assemblies are arranged circumferentially on the short cylindrical section. Each quick-locking assembly includes a swing rod with its bottom hinged to the short cylindrical section. An abutment sleeve is fitted on the swing rod, and a rotating handle is threaded on the top of the swing rod. The rotating handle is used to press down the abutment sleeve so that the bottom of the abutment sleeve abuts against the manhole cover, thus pressing the manhole cover onto the top of the short cylindrical section.

3. The waste liquid neutralization device according to claim 1, characterized in that, The top of the filter housing is provided with a fixed flange, the filter screen is placed on the fixed flange, the connecting flange is pressed onto the filter screen, and bolted to the fixed flange.

4. The waste liquid neutralization device according to claim 1, characterized in that, A splash guard is provided above the spiral guide blades inside the filter housing.

5. A waste liquid neutralization device according to claim 1, characterized in that, The storage tank is equipped with a level gauge.

6. The waste liquid neutralization device according to claim 1, characterized in that, The storage tank is equipped with an overflow pipe, and the overflow pipe is equipped with an overflow valve.

7. A waste liquid neutralization device according to claim 1, characterized in that, The storage tank is provided with a sampling port, and a sampling valve is provided at the sampling port.

8. A waste liquid neutralization device according to claim 1, characterized in that, The top of the storage tank is equipped with a lifting ring.

9. A waste liquid neutralization device according to claim 1, characterized in that, The storage tank is provided with a base at the bottom, and the sewage pump is mounted on the base via a sewage pump mounting bracket.

10. A waste liquid neutralization device according to claim 1, characterized in that, The bottom of the liquid storage tank is equipped with support wheels, which include two braked directional wheels at one end and two braked swivel wheels at the other end.

Images