Pressure module of membrane treatment equipment

Abstract

The utility model relates to the technical field of membrane treatment equipment, in particular to a pressure module of membrane treatment equipment, which is arranged on the membrane treatment equipment, the membrane treatment equipment comprises a water production module, the water production module comprises a circulating pump, a circulating pipe, a plurality of filter cartridges and a clear water branch pipe, a water inlet and a water outlet of the circulating pump are communicated with each filter cartridge through a circulating pipe, the clear water branch pipe is communicated with each filter cartridge from the side part of the filter cartridge, a pressure module of the membrane treatment equipment comprises a water production pressure assembly, and the water production pressure assembly comprises a first pressure transmitter and a second pressure transmitter; the first pressure transmitter is installed at the end, close to a water outlet of the circulating pump, of the circulating pipe, the second pressure transmitter is installed on the clear water branch pipe, and the first pressure transmitter is arranged on the circulating pipe, and the second pressure transmitter is arranged on the clear water branch pipe, so that when the filter membrane is blocked, the filter membrane can react in time; and retentate on the filter membrane can be cleaned in time.

Description

Technical Field

[0001] This application relates to the field of membrane treatment equipment technology, and more specifically to a pressure module of a membrane treatment equipment. Background Technology

[0002] To reduce the negative impact of marine diesel engine emissions on the atmospheric environment, most existing diesel-powered ships are equipped with exhaust gas cleaning systems, which include filter modules.

[0003] There is a filtering module, such as Figure 1 As shown, the system includes a tube 90 and a filter membrane 91. The tube 90 has an inner cavity 901, and the filter membrane 91 divides the inner cavity 901 into a wastewater cavity 9011 and a clean water cavity 9012. The clean water cavity 9012 has a clean water outlet 9013. It should be noted that wastewater flows into the wastewater cavity 9011, is filtered by the filter membrane 91, produces clean water which flows into the clean water cavity 9012, and is discharged from the clean water outlet 9013. However, when the filter membrane 91 is clogged, wastewater cannot easily pass through it into the clean water cavity 9012. As wastewater continuously flows into the wastewater cavity 9011, the water pressure inside the wastewater cavity 9011 becomes very high, potentially affecting the normal operation of the filtration module and consequently the entire ship exhaust gas cleaning system. Because the filter membrane 91 is located within the inner cavity 901, operators cannot easily determine whether the filtration capacity is affected and take timely action without removing the tube 90.

[0004] Therefore, there is a need for a pressure module in a membrane treatment device that can react promptly when the filter membrane is clogged and helps to clean the residue on the filter membrane in a timely manner. Summary of the Invention

[0005] The main objective of this application is to provide a pressure module for a membrane treatment device. The membrane treatment device includes a water production module comprising a circulation pump, a circulation pipe, several filter cartridges, and a clean water branch pipe. The inlet and outlet of the circulation pump are connected to each filter cartridge via the circulation pipe. The clean water branch pipe connects to the side of each filter cartridge. The pressure module of the membrane treatment device includes a water production pressure component, comprising a first pressure transmitter and a second pressure transmitter. The first pressure transmitter is installed at the end of the circulation pipe near the outlet of the circulation pump, and the second pressure transmitter is installed on the clean water branch pipe. By installing the first pressure transmitter on the circulation pipe and the second pressure transmitter on the clean water branch pipe, when the filter membrane in the filter cartridge becomes clogged, the membrane treatment device cleaning module automatically starts and cleans the filter membrane. This application embodiment has the advantage of timely response when the filter membrane becomes clogged and facilitates timely cleaning of residues on the filter membrane.

[0006] Another objective of this application is to provide a pressure module for a membrane treatment device, wherein the water production pressure component further includes multiple first pressure gauges, and the first pressure gauges are installed on both the circulation pipe and the clean water branch pipe. By setting the first pressure gauges, the water pressure in the circulation pipe and the clean water branch pipe can be directly observed. The pressure difference between the two ends of the filter cartridge can also be determined by the difference in readings of the first pressure gauges at different positions, thereby making a preliminary judgment on whether the filter membrane needs to be cleaned.

[0007] To achieve at least one of the above-mentioned objectives, this application provides a pressure module for a membrane treatment device, disposed on the membrane treatment device, wherein:

[0008] The membrane treatment equipment includes a water production module, which includes a circulation pump, a circulation pipe, several filter cartridges and a clean water branch pipe. The inlet and outlet of the circulation pump are connected to each filter cartridge through the circulation pipe, and the clean water branch pipe is connected to each filter cartridge from the side.

[0009] The pressure module of the membrane treatment equipment includes a product water pressure component, which includes a first pressure transmitter and a second pressure transmitter. The first pressure transmitter is installed at one end of the circulation pipe near the outlet of the circulation pump, and the second pressure transmitter is installed on the clean water branch pipe.

[0010] In one or more embodiments of this application, the membrane treatment equipment further includes a pre-filtration module, which includes a pre-filtration cylinder, a sewage inflow pipe, and a primary filtration pipe. The sewage inflow pipe and the primary filtration pipe are respectively connected to the inlet and outlet of the pre-filtration cylinder. The pressure module of the membrane treatment equipment further includes a primary filtration pressure component, which includes a third pressure transmitter and a fourth pressure transmitter. The third pressure transmitter is installed on the sewage inflow pipe, and the fourth pressure transmitter is installed on the primary filtration pipe. The end of the primary filtration pipe opposite to the pre-filtration cylinder is connected to the circulation pipe.

[0011] In one or more embodiments of this application, the water production pressure assembly further includes a plurality of first pressure gauges, and the first pressure gauges are installed on both the circulation pipe and the clear water branch pipe.

[0012] In one or more embodiments of this application, the membrane treatment equipment further includes a clean water module, which includes a clean water tank, a backwash pump, and a clean water main pipe. The two ends of the clean water main pipe are respectively connected to the clean water branch pipe and the clean water tank. The inlet of the backwash pump is connected to the clean water tank, and the outlet of the backwash pump is connected to the clean water main pipe.

[0013] In one or more embodiments of this application, the clean water module further includes a connecting pipe and a return pipe. The two ends of the connecting pipe are respectively connected to the outlet of the clean water tank and the inlet of the backwash pump. The two ends of the return pipe are respectively connected to the outlet of the backwash pump and the clean water main pipe. The pressure module of the membrane treatment equipment further includes a second pressure gauge, which is installed on the return pipe.

[0014] In one or more embodiments of this application, the membrane treatment device further includes a chemical cleaning module, which includes a freshwater pipe and a chemical tank. One end of the freshwater pipe is connected to the circulation pipe, and the chemical tank is connected to the freshwater pipe.

[0015] In one or more embodiments of this application, the pressure module of the membrane treatment equipment further includes a third pressure gauge and a fifth pressure transmitter, both of which are installed at the end of the freshwater pipe away from the circulation pipe.

[0016] In one or more embodiments of this application, the diameter of the circulation pipe is larger than the diameter of the clear water branch pipe.

[0017] In one or more embodiments of this application, the circulation pipe includes a straight pipe, a first U-shaped pipe, and an L-shaped pipe. There are two filter cartridges. The two ends of the first U-shaped pipe are respectively connected to the two filter cartridges. The two ends of the straight pipe are respectively connected to one filter cartridge and the inlet of the circulation pump. The two ends of the L-shaped pipe are respectively connected to the other filter cartridge and the outlet of the circulation pump. The clean water branch pipe includes two second U-shaped pipes and an intermediate pipe. The second U-shaped pipes correspond one-to-one with the filter cartridges. The two ends of each second U-shaped pipe are respectively connected to the corresponding filter cartridge. The two ends of the intermediate pipe are respectively connected to the two second U-shaped pipes. A first pressure gauge is provided on each of the straight pipe, the first U-shaped pipe, the L-shaped pipe, and the second U-shaped pipe. A first pressure transmitter is installed on the L-shaped pipe, and a second pressure transmitter is installed on the second U-shaped pipe.

[0018] In this embodiment, the water production module is located on the membrane treatment equipment. The membrane treatment equipment includes a water production module, which includes a circulation pump, a circulation pipe, several filter cartridges, and a clean water branch pipe. The inlet and outlet of the circulation pump are connected to each filter cartridge through the circulation pipe. The clean water branch pipe is connected to each filter cartridge from the side. The pressure module of the membrane treatment equipment includes a water production pressure component, which includes a first pressure transmitter and a second pressure transmitter. The first pressure transmitter is installed at the end of the circulation pipe near the outlet of the circulation pump, and the second pressure transmitter is installed on the clean water branch pipe. By setting the first pressure transmitter on the circulation pipe and the second pressure transmitter on the clean water branch pipe, when the filter membrane in the filter cartridge is clogged, the cleaning module of the membrane treatment equipment automatically starts and cleans the filter membrane. This embodiment has the advantage of being able to react promptly when the filter membrane is clogged and helping to clean the residue on the filter membrane in a timely manner. Attached Figure Description

[0019] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 The diagram illustrates the structure of a current filtering module.

[0021] Figure 2 The figure shows a structural schematic diagram of the pressure module of a membrane treatment device according to this utility model;

[0022] Figure 3 The diagram illustrates the structure of the water production module and the water production pressure component.

[0023] Figure 4 The diagram illustrates the structure of the pre-filtration module and the primary filtration pressure assembly.

[0024] Figure 5 The diagram illustrates the structure of the water cleaning module and the chemical cleaning module. Detailed Implementation

[0025] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0029] The pressure module of the illustrative membrane treatment equipment is shown in the reference diagram. Figures 2 to 5 A pressure module of a membrane treatment device according to a preferred embodiment of the present invention is disposed on the membrane treatment device.

[0030] Specifically, if Figure 2 and Figure 3 As shown, the membrane treatment equipment includes a water production module 10, which includes a circulation pump 101, a circulation pipe 102, several filter cartridges 103, and a clear water branch pipe 104. The inlet and outlet of the circulation pump 101 are connected to each filter cartridge 103 through the circulation pipe 102. Each filter cartridge 103 is provided with a cylindrical filter membrane (not shown in the figure). The clear water branch pipe 104 is connected to each filter cartridge 103 from the side.

[0031] It should be noted that wastewater flows into the circulation pipe 102 and is propelled by the circulation pump 101 within it. As the wastewater fills the circulation pipe 102 and flows through the filter cartridge 103, it passes through the cylindrical filter membrane and produces clean water, which flows out from the clean water branch pipe 104. However, when a large amount of contaminants accumulates on the surface of the cylindrical filter membrane over time, causing a sudden drop in the clean water membrane flux, the pressure in the circulation pipe 102 will abnormally increase, damaging both the circulation pipe 102 and the circulation pump 101. Normally, users clean or replace the cylindrical filter membrane periodically based on experience. However, in complex situations where multiple types of wastewater are treated simultaneously, relying solely on experience for cleaning or replacement is insufficient.

[0032] Therefore, in the embodiments of this application, such as Figure 3As shown, the pressure module of the membrane treatment equipment includes a product water pressure component 20. The product water pressure component 20 includes a first pressure transmitter 201 and a second pressure transmitter 202. The first pressure transmitter 201 is installed at the end of the circulation pipe 102 near the outlet of the circulation pump 101, and the second pressure transmitter 202 is installed on the clean water branch pipe 104. Furthermore, the diameter of the circulation pipe 102 is larger than the diameter of the clean water branch pipe 104.

[0033] It should be noted that both the first pressure transmitter 201 and the second pressure transmitter 202 are electrically connected to the controller (not shown in the figure) on the membrane treatment equipment. The first pressure transmitter 201 measures the instantaneous pressure value in the circulation pipe 102, and the second pressure transmitter 202 measures the instantaneous pressure value in the clear water branch pipe 104. When the cylindrical filter membrane is not clogged or only slightly clogged, and wastewater flows through the circulation pipe 102 and produces clear water, the pressure value in the circulation pipe 102 is within a range A, and the pressure value in the clear water branch pipe 104 is within a range B. When the instantaneous pressure value in the circulation pipe 102 exceeds the value within range A, the first pressure transmitter 201 sends an electrical signal to the controller, providing the prerequisite for the cleaning module in the membrane treatment equipment to automatically start and clean the cylindrical filter membrane. It should also be noted that, since the diameter of the circulation pipe 102 is larger than the diameter of the clear water branch pipe 104, the water pressure in the circulation pipe 102 is... The pressure value is usually less than the water pressure value in the clear water branch pipe 104. When the cylindrical filter membrane is severely clogged, the sewage continuously flows into the circulation pipe 102, and the sewage has difficulty passing through the cylindrical filter membrane and being consumed. Therefore, the water pressure value in the circulation pipe 102 will become abnormally large and exceed the value in range A. In addition, when the cylindrical filter membrane is severely clogged, the amount of clear water produced is small, so the flow rate of clear water into the clear water branch pipe 104 is less than when the cylindrical filter membrane is not clogged. At this time, the pressure value in the clear water branch pipe 104 is less than the value in range B. It should also be noted that the water pressure value in the circulation pipe 102 will be greater than the water pressure value in the clear water branch pipe 104. Therefore, when the absolute value of the difference between the pressure value output by the first pressure transmitter 201 and the pressure value output by the second pressure transmitter 202 exceeds the absolute value of the set value on the controller, the controller will also automatically start the cleaning module and clean the cylindrical filter membrane. It is evident that, compared to the prior art where operators need to rely on experience to determine how long to activate the cleaning module, this embodiment of the application provides the prerequisite for the controller to stably and automatically start the cleaning module and clean the cylindrical filter membrane under two judgment logics by setting the first pressure transmitter 201 on the circulation pipe 102 and the second pressure transmitter 202 on the clean water branch pipe 104. This has the advantage of being able to react in time when the filter membrane is blocked and helping to clean the residue on the filter membrane in a timely manner.

[0034] Furthermore, such as Figure 3 As shown, the water production pressure assembly 20 also includes a plurality of first pressure gauges 203, and the first pressure gauges 203 are installed on both the circulation pipe 102 and the clear water branch pipe 104.

[0035] It should be noted that by installing the first pressure gauge 203 on the circulation pipe 102 and the clear water branch pipe 104, the operator can directly observe the water pressure of the circulation pipe 102 and the clear water branch pipe 104 by observing the first pressure gauge 203. By comparing the readings of different first pressure gauges 203, the operator can make a preliminary judgment on the contamination status of different cylindrical filter membranes.

[0036] Furthermore, such as Figure 4 As shown, the membrane treatment equipment further includes a pre-filtration module 30, which includes a pre-filtration cylinder 301, a sewage inflow pipe 302, and a primary filtration pipe 303. The sewage inflow pipe 302 and the primary filtration pipe 303 are respectively connected to the inlet and outlet of the pre-filtration cylinder 301. The pressure module of the membrane treatment equipment further includes a primary filtration pressure component 40, which includes a third pressure transmitter 401 and a fourth pressure transmitter 402. The third pressure transmitter 401 is installed on the sewage inflow pipe 302, and the fourth pressure transmitter 402 is installed on the primary filtration pipe 303. The end of the primary filtration pipe 303 facing away from the pre-filtration cylinder 301 is connected to the circulation pipe 102.

[0037] It should be noted that by setting the pre-filter cartridge 301, large particulate pollutants in the wastewater are first pre-filtered, and then the wastewater is filtered a second time through the cylindrical filter membrane to produce clean water. It should be noted that after prolonged use, large particulate pollutants can easily clog the filter bags inside the pre-filter cartridge 301. Furthermore, both the third pressure transmitter 401 and the fourth pressure transmitter 402 are electrically connected to the controller. By installing the third pressure transmitter 401 on the primary filtration pipe 303 and the fourth pressure transmitter 402 on the sewage inflow pipe 302, when the filter bags inside the pre-filter cartridge 301 become clogged, the instantaneous water pressure measured by the third pressure transmitter 401 will increase because sewage has greater difficulty passing through the filter bags. Simultaneously, because less sewage flows out, the instantaneous water pressure measured by the fourth pressure transmitter 402 will decrease. This results in the difference between the instantaneous water pressure measured by the third pressure transmitter 401 and the fourth pressure transmitter 402 exceeding the rated value. At this point, the controller will issue an alarm signal and alert the operator to clean or replace the filter bags in the pre-filter cartridge 301 promptly.

[0038] Furthermore, such as Figure 5As shown, the membrane treatment equipment also includes a clean water module 50, which includes a clean water tank 501, a backwash pump 502, and a clean water main pipe 503. The two ends of the clean water main pipe 503 are respectively connected to the clean water branch pipe 104 and the clean water tank 501. The inlet of the backwash pump 502 is connected to the clean water tank 501, and the outlet of the backwash pump 502 is connected to the clean water main pipe 503. More specifically, the clean water module 50 further includes a connecting pipe 504 and a return pipe 505. The two ends of the connecting pipe 504 are respectively connected to the outlet of the clean water tank 501 and the inlet of the backwash pump 502. The two ends of the return pipe 505 are respectively connected to the outlet of the backwash pump 502 and the clean water main pipe 503. The pressure module of the membrane treatment equipment also includes a second pressure gauge 5051. The second pressure gauge 5051 is installed on the return pipe 505. The second pressure gauge 5051 is set to facilitate the operator to observe the water pressure of the return pipe 505.

[0039] In addition, such as Figure 2 and Figure 5 As shown, the membrane treatment equipment also includes a chemical cleaning module 60, which includes a freshwater pipe 601 and a chemical tank 602. One end of the freshwater pipe 601 is connected to the circulation pipe 102, and the chemical tank 602 is connected to the freshwater pipe 601.

[0040] It should be noted that the clean water module 50 and the chemical cleaning module 60 together constitute the cleaning module in the membrane treatment equipment of this application. It should also be noted that, under normal conditions, after wastewater passes through the cylindrical filter membrane and produces clean water, the clean water flows along the clean water branch pipe 104 to the clean water main pipe 503 and then into the clean water tank 501. When it is necessary to clean the cylindrical filter membrane inside the filter cylinder 103, the backwash pump 502 is activated. The clean water in the clean water tank 501 flows along the connecting pipe 504 into the inlet of the backwash pump 502, and is then sent by the backwash pump 502 into the return pipe 505. The clean water then flows along the return pipe 505 into the clean water main pipe 503, and from the clean water main pipe 503 into the clean water branch pipe 104, and into the filter cylinder 103 to backwash the cylindrical filter membrane, thereby cleaning the contaminants on the cylindrical filter membrane.

[0041] In addition, when the contaminants on the cylindrical filter membrane are severely clogged, fresh water can be injected into the fresh water pipe 601, and the acidic or alkaline substances in the reagent tank 602 can be introduced into the fresh water pipe 601 through a pipeline (not shown in the figure) and mixed with the fresh water before flowing into the circulation pipe 102. As the circulation pump 101 works, the substances flow in the circulation pipe 102, thereby cleaning the cylindrical filter membrane in the filter cartridge 103.

[0042] Furthermore, to avoid excessive or insufficient freshwater pressure flowing into the freshwater pipe 601, such as... Figure 5 As shown, the pressure module of the membrane treatment equipment also includes a third pressure gauge 6011 and a fifth pressure transmitter 6012. Both the third pressure gauge 6011 and the fifth pressure transmitter 6012 are installed at the end of the freshwater pipe 601 opposite to the circulation pipe 102. The fifth pressure transmitter 6012 is electrically connected to the controller. The third pressure gauge 6011 allows for direct observation of the water pressure inside the freshwater pipe 601. The fifth pressure transmitter 6012 provides the necessary condition for the controller to reduce the flow rate at the valve on the external water supply pipe when the water pressure is too high.

[0043] Furthermore, in the embodiments of this application, such as Figure 3 As shown, the circulation pipe 102 includes a straight pipe 1021, a first U-shaped pipe 1022, and an L-shaped pipe 1023. There are two filter cartridges 103. The two ends of the first U-shaped pipe 1022 are connected to both filter cartridges 103 respectively. The two ends of the straight pipe 1021 are connected to one filter cartridge 103 and the inlet of the circulation pump 101 respectively. The two ends of the L-shaped pipe 1023 are connected to the other filter cartridge 103 and the outlet of the circulation pump 101 respectively. The clear water branch pipe 104 includes two second U-shaped pipes 1041 and an intermediate pipe 1042. The second U-shaped pipes 1041 are connected to the filter cartridges... Each of the 103 tubes corresponds to a filter cartridge 103 at both ends. The intermediate tube 1042 is connected to two second U-shaped tubes 1041 at both ends. A first pressure gauge 203 is provided on each of the straight tube 1021, the first U-shaped tube 1022, the L-shaped tube 1023, and one second U-shaped tube 1041. A first pressure transmitter 201 is mounted on the L-shaped tube 1023, and a second pressure transmitter 202 is mounted on one second U-shaped tube 1041. Additionally, the primary filter tube 303 is connected to the straight tube 1021. Furthermore, as... Figure 4 As shown, the primary filter pressure assembly 40 also includes a fourth pressure gauge 403, which is installed on the primary filter tube 303.

[0044] In summary, the pressure module of the membrane treatment device based on the embodiments of this application is explained, which provides advantages such as timely response when the filter membrane is clogged and timely cleaning of residues on the filter membrane.

[0045] It is worth mentioning that, in this embodiment, the pressure module of the membrane treatment equipment has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the pressure module of the membrane treatment equipment provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0046] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.

Claims

1. A pressure module for a membrane treatment device, disposed on the membrane treatment device, characterized in that: The membrane treatment equipment includes a water production module, which includes a circulation pump, a circulation pipe, several filter cartridges and a clean water branch pipe. The inlet and outlet of the circulation pump are connected to each filter cartridge through the circulation pipe, and the clean water branch pipe is connected to each filter cartridge from the side. The pressure module of the membrane treatment equipment includes a product water pressure component, which includes a first pressure transmitter and a second pressure transmitter. The first pressure transmitter is installed at one end of the circulation pipe near the outlet of the circulation pump, and the second pressure transmitter is installed on the clean water branch pipe.

2. The pressure module of the membrane treatment equipment according to claim 1, characterized in that: The membrane treatment equipment further includes a pre-filtration module, which includes a pre-filtration cylinder, a sewage inflow pipe, and a primary filtration pipe. The sewage inflow pipe and the primary filtration pipe are respectively connected to the inlet and outlet of the pre-filtration cylinder. The pressure module of the membrane treatment equipment further includes a primary filtration pressure component, which includes a third pressure transmitter and a fourth pressure transmitter. The third pressure transmitter is installed on the sewage inflow pipe, and the fourth pressure transmitter is installed on the primary filtration pipe. The end of the primary filtration pipe opposite to the pre-filtration cylinder is connected to the circulation pipe.

3. The pressure module of the membrane treatment equipment according to claim 1 or 2, characterized in that: The water production pressure assembly also includes multiple first pressure gauges, and the first pressure gauges are installed on both the circulation pipe and the clear water branch pipe.

4. The pressure module of the membrane treatment equipment according to claim 3, characterized in that: The membrane treatment equipment also includes a clean water module, which includes a clean water tank, a backwash pump, and a clean water main pipe. The two ends of the clean water main pipe are connected to the clean water branch pipe and the clean water tank, respectively. The inlet of the backwash pump is connected to the clean water tank, and the outlet of the backwash pump is connected to the clean water main pipe.

5. The pressure module of the membrane treatment equipment according to claim 4, characterized in that: The clean water module also includes a connecting pipe and a return pipe. The two ends of the connecting pipe are connected to the outlet of the clean water tank and the inlet of the backwash pump, respectively. The two ends of the return pipe are connected to the outlet of the backwash pump and the clean water main pipe, respectively. The pressure module of the membrane treatment equipment also includes a second pressure gauge, which is installed on the return pipe.

6. The pressure module of the membrane treatment equipment according to claim 3, characterized in that: The membrane treatment equipment also includes a chemical cleaning module, which includes a freshwater pipe and a chemical tank. One end of the freshwater pipe is connected to the circulation pipe, and the chemical tank is connected to the freshwater pipe.

7. The pressure module of the membrane treatment equipment according to claim 6, characterized in that: The pressure module of the membrane treatment equipment also includes a third pressure gauge and a fifth pressure transmitter, both of which are installed at the end of the freshwater pipe away from the circulation pipe.

8. The pressure module of the membrane treatment equipment according to claim 3, characterized in that: The diameter of the circulation pipe is larger than the diameter of the clear water branch pipe.

9. The pressure module of the membrane treatment equipment according to claim 3, characterized in that: The circulation pipe includes a straight pipe, a first U-shaped pipe, and an L-shaped pipe. There are two filter cartridges. The two ends of the first U-shaped pipe are connected to the two filter cartridges respectively. The two ends of the straight pipe are connected to one filter cartridge and the inlet of the circulation pump respectively. The two ends of the L-shaped pipe are connected to the other filter cartridge and the outlet of the circulation pump respectively. The clean water branch pipe includes two second U-shaped pipes and an intermediate pipe. The second U-shaped pipes correspond one-to-one with the filter cartridges. The two ends of each second U-shaped pipe are connected to the corresponding filter cartridge. The two ends of the intermediate pipe are connected to the two second U-shaped pipes respectively. A first pressure gauge is provided on each of the straight pipe, the first U-shaped pipe, the L-shaped pipe, and the second U-shaped pipe. The first pressure transmitter is installed on the L-shaped pipe, and the second pressure transmitter is installed on the second U-shaped pipe.

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