Automatic adding control device for sodium hypochlorite

Abstract

The utility model belongs to control device equipment technical field, concretely relates to a sodium hypochlorite automatic addition control device, including venturi configuration mixer, configuration groove, high -level groove and purification tower, the outlet fixed connection of venturi configuration mixer has the mixed connecting pipe, the feed inlet of configuration groove is connected to the mixed connecting pipe, the discharge port of configuration groove is connected with configuration pump no.

Description

Technical Field

[0001] This solution belongs to the field of control devices and equipment, specifically involving an automatic sodium hypochlorite addition control device. Background Technology

[0002] Sodium hypochlorite (NaClO) is widely used as a highly efficient oxidant in desulfurization and denitrification processes in purification towers, among other fields such as chemical engineering and water treatment.

[0003] Sodium hypochlorite solution is an important chemical raw material and disinfectant, and the stability of its addition process directly affects the production process and product quality. Traditional sodium hypochlorite addition systems often use direct pumping, delivering the prepared sodium hypochlorite solution directly to the point of use via a metering pump. This method has the following drawbacks: first, it has high energy consumption, requiring continuously operating power equipment; second, it experiences large flow fluctuations, as changes in the liquid level in the preparation tank or fluctuations in pumping pressure can lead to unstable flow rates of the sodium hypochlorite solution entering the purification tower; and third, the system lacks sufficient safety, lacking necessary overflow protection measures, especially in situations involving the treatment of mixtures of waste sodium hypochlorite and concentrated sodium hypochlorite. Utility Model Content

[0004] The purpose of this solution is to provide an automatic sodium hypochlorite addition control device to solve the problems of insufficient conveying power and large flow fluctuations in existing technologies.

[0005] To achieve the above objectives, this solution provides an automatic sodium hypochlorite addition control device, comprising a Venturi mixer, a mixing tank, an elevated tank, and a purification tower. The outlet of the Venturi mixer is fixedly connected to a mixing connection pipe, which is connected to the inlet of the mixing tank. The outlet of the mixing tank is connected to a first mixing pump via a pipeline. The output end of the first mixing pump is fixedly connected to an elevated pipeline, the end of which is fixedly connected to the inlet of the elevated tank. The outlet of the elevated tank is fixedly connected to a conveying pipe, the end of which is fixedly connected to a second mixing pump. The output end of the second mixing pump is fixedly connected to an inlet pipe, the end of which is connected to the purification tower.

[0006] The principle of this scheme is as follows: the high-level tank is installed at a certain height above the ground, ensuring that its outlet height is higher than the inlet of the purification tower. The preparation tank is placed directly on the ground and connected to the high-level tank through preparation pump one. The inlet end of the Venturi mixer is connected to the waste sodium hypochlorite conveying pipe and the concentrated sodium hypochlorite conveying pipe respectively. Its outlet is connected to the inlet of the preparation tank through the mixing connection pipe. In this way, waste sodium hypochlorite and concentrated sodium hypochlorite can be mixed in the Venturi mixer. The mixed solution enters the preparation tank through the mixing connection pipe. After the liquid level in the preparation tank reaches a certain height, preparation pump one is started to pump the solution into the high-level tank through the high-level pipeline. When the liquid level in the high-level tank rises to the safe liquid level line, preparation pump one is shut down, and the solution flows by gravity through the conveying pipe to preparation pump two. Then, through preparation pump two and the inlet pipe, the solution is supplied to the purification tower. When the liquid level in the high-level tank is abnormal, the excess solution is automatically discharged to the preparation tank through the overflow pipe and then pumped again.

[0007] The technical advantages of this solution are as follows: waste sodium hypochlorite and concentrated sodium hypochlorite are mixed and pressurized by a Venturi mixer, and then pumped to a high-level tank by a pump. The solution then enters the purification tower by the pressure difference based on the installation height. Since the installation height of the high-level tank is higher than that of the purification tower inlet, the mixed solution flows by gravity through the delivery pipe to a pump, reducing pumping energy consumption. Moreover, the high-level tank acts as a buffer container, which can eliminate the direct impact of flow fluctuations in the tank on the purification tower.

[0008] Furthermore, the inlet of the Venturi mixer is connected to both the waste sodium sulfide conveying pipe and the concentrated sodium sulfide conveying pipe. The waste sodium sulfide and concentrated sodium sulfide can be mixed within the Venturi mixer.

[0009] Furthermore, both the waste sodium hypochlorite conveying pipe and the concentrated sodium hypochlorite conveying pipe are made of stainless steel. Stainless steel pipes are not prone to rust and are less susceptible to contamination.

[0010] Furthermore, the Venturi mixer is lined with a polytetrafluoroethylene (PTFE) anti-corrosion layer. The PTFE anti-corrosion layer enhances the corrosion resistance of the Venturi mixer.

[0011] Furthermore, a pneumatic regulating valve is installed in the middle section of the conveying pipe. The pneumatic regulating valve is used to regulate the feed flow rate.

[0012] Furthermore, an overflow pipe is fixedly connected between the high-level tank and the configuration tank. The inlet of the overflow pipe is located at a preset safe liquid level in the high-level tank, and the outlet is connected to the configuration tank.

[0013] Furthermore, the installation height of the elevated tank is higher than the inlet of the purification tower. The solution is then supplied to the purification tower using this height difference. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0015] The following detailed explanation illustrates the specific implementation methods: The reference numerals in the accompanying drawings include: Venturi mixer 1, waste sodium hypochlorite conveying pipe 101, concentrated sodium hypochlorite conveying pipe 102, mixing tank 2, high-level tank 3, purification tower 4, mixing pump one 5, mixing pump two 6, mixing connection pipe 7, high-level pipe 8, overflow pipe 9, conveying pipe 10, pneumatic regulating valve 11, and liquid inlet pipe 12. Detailed Implementation

[0016] The basic implementation examples are as follows: Figure 1 The diagram shows an automatic sodium hypochlorite addition control device, comprising a Venturi mixer 1, a mixing tank 2, an elevated tank 3, and a purification tower 4. The elevated tank 3 is installed at a height higher than the inlet of the purification tower 4. The solution is supplied to the purification tower 4 using the height difference. A mixing connection pipe 7 is fixedly connected to the outlet of the Venturi mixer 1, and the mixing connection pipe 7 is connected to the inlet of the mixing tank 2. The outlet of the mixing tank 2 is connected to a mixing pump 5 via a pipeline. The output end of the mixing pump 5 is fixedly connected to an elevated pipe 8, and the end of the elevated pipe 8 is fixedly connected to the inlet of the elevated tank 3. An overflow pipe 9 is fixedly connected between the elevated tank 3 and the mixing tank 2. The inlet of the overflow pipe 9 is located at a preset safe liquid level in the elevated tank 3, and the outlet is connected to the mixing tank 2. A delivery pipe 10 is fixedly connected to the outlet of the elevated tank 3, and a pneumatic regulating valve 11 is installed in the middle section of the delivery pipe 10. The pneumatic regulating valve 11 is used to regulate the feed flow rate. The end of the conveying pipe 10 is fixedly connected to the second pump 6. The output end of the second pump 6 is fixedly connected to the inlet pipe 12. The end of the inlet pipe 12 is connected to the purification tower 4.

[0017] like Figure 1 As shown, the inlet of the Venturi mixer 1 is connected to the waste sodium sulfide conveying pipe 101 and the concentrated sodium sulfide conveying pipe 102, respectively. Waste sodium sulfide and concentrated sodium sulfide can be mixed within the Venturi mixer 1. Both the waste sodium sulfide conveying pipe 101 and the concentrated sodium sulfide conveying pipe 102 are made of stainless steel. Stainless steel pipes are not prone to rust and are less susceptible to contamination. The Venturi mixer 1 is lined with a polytetrafluoroethylene (PTFE) anti-corrosion layer. The PTFE anti-corrosion layer enhances the corrosion resistance of the Venturi mixer 1.

[0018] The specific implementation process of this utility model is as follows: The high-level tank 3 is installed at a certain height above the ground, ensuring that its outlet height is higher than the inlet of the purification tower 4. The configuration tank 2 is placed directly on the ground and connected to the high-level tank 3 through the configuration pump 5. The inlet end of the Venturi mixer 1 is connected to the waste sodium hypochlorite conveying pipe 101 and the concentrated sodium hypochlorite conveying pipe 102 respectively. Its outlet is connected to the inlet of the configuration tank 2 through the mixing connection pipe 7. In this way, the waste sodium hypochlorite and the concentrated sodium hypochlorite can be mixed in the Venturi mixer 1. The mixed solution enters the preparation tank 2 through the mixing connection pipe 7. After the liquid level in the preparation tank 2 reaches a certain height, the preparation pump 5 is started to pump the solution into the high-level tank 3 through the high-level pipe 8. When the liquid level in the high-level tank 3 rises to the safe liquid level line, the preparation pump 5 is turned off and flows by gravity through the delivery pipe 10 to the preparation pump 6. Then, through the preparation pump 6 and the inlet pipe 12, the solution is supplied to the purification tower 4. When the liquid level in the high-level tank 3 is abnormal, the excess solution is automatically discharged to the preparation tank 2 through the overflow pipe 9 and then re-pumped.

[0019] In this scheme, waste sodium hypochlorite and concentrated sodium hypochlorite are mixed and pressurized by a Venturi mixer 1, and then pumped to a high-level tank 3 by a pump 5. The mixture then enters the purification tower 4 using the pressure difference based on the installation height. Since the installation height of the high-level tank 3 is higher than the inlet of the purification tower 4, the mixed solution flows by gravity through the delivery pipe 10 to the pump 6, reducing pumping energy consumption. Moreover, the high-level tank 3 acts as a buffer container, which can eliminate the direct impact of flow fluctuations in the tank 2 on the purification tower 4.

[0020] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic sodium hypochlorite addition control device, comprising a Venturi mixer, a mixing tank, an elevated tank, and a purification tower, characterized in that: The outlet of the Venturi mixer is fixedly connected to a mixing connection pipe, which is connected to the inlet of the configuration tank. The outlet of the configuration tank is connected to a configuration pump one via a pipeline. The output end of the configuration pump one is fixedly connected to a high-level pipeline, the end of which is fixedly connected to the inlet of the high-level tank. The outlet of the high-level tank is fixedly connected to a conveying pipe, the end of which is fixedly connected to a configuration pump two. The output end of the configuration pump two is fixedly connected to a liquid inlet pipe, the end of which is connected to the purification tower.

2. The sodium hypochlorite automatic addition control device according to claim 1, characterized in that: The inlet of the mixer configured in the Venturi is connected to the waste sodium hypochlorite conveying pipe and the concentrated sodium hypochlorite conveying pipe, respectively.

3. The sodium hypochlorite automatic addition control device according to claim 2, characterized in that: Both the waste sodium hypochlorite conveying pipe and the concentrated sodium hypochlorite conveying pipe are made of stainless steel.

4. The sodium hypochlorite automatic addition control device according to claim 1, characterized in that: The Venturi mixer is lined with a polytetrafluoroethylene (PTFE) anti-corrosion layer.

5. The sodium hypochlorite automatic addition control device according to claim 1, characterized in that: A pneumatic regulating valve is installed in the middle section of the conveying pipe.

6. The sodium hypochlorite automatic addition control device according to claim 1, characterized in that: An overflow pipe is fixedly connected between the high-level tank and the configuration tank.

7. The sodium hypochlorite automatic addition control device according to claim 1, characterized in that: The installation height of the high-level tank is higher than the inlet of the purification tower.

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