Membrane separation device

Abstract

The invention relates to the technical field of sewage treatment, and provides a membrane separation device. The invention provides a membrane separation device, which is used for solving the technical problems of complex cleaning operation and influence on sewage treatment efficiency due to the fact that a membrane component needs to be detached off line and cleaned in the prior art. The invention provides a membrane separation device. The membrane separation device comprises a sewage storage assembly, a sewage collection assembly, a target liquid storage assembly, a cleaning assembly, a first conveying pipe, a second conveying pipe, a first membrane assembly, a second membrane assembly, a first cleaning valve, a second cleaning valve, a first driving assembly, a second driving assembly, a first control valve and a second control valve, the design core is that two conveying pipes and matched membrane assemblies are arranged. And when one conveying pipe is blocked, the other conveying pipe can be switched to be used for continuously treating the sewage.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a membrane separation device. Background Art

[0002] With the rapid development of livestock and poultry farming, the generation of a large amount of sewage has posed a major threat to the environment. These sewage are rich in suspended solids and macromolecular organic matter. Therefore, efficient treatment of livestock and poultry sewage has become the focus and difficulty of research.

[0003] Membrane separation technology is an emerging sewage treatment process with the advantages of no phase change, high selectivity, simple operation, high treatment efficiency and small footprint, and has been widely used in various sewage treatment projects. This technology separates, purifies and enriches solutes and solvents through external energy or chemical potential difference, and can effectively purify sewage without changing the composition of the treatment object.

[0004] The membrane separation device is a specific application equipment of the membrane separation technology, which is usually composed of membrane components. After the existing membrane separation device has been running continuously for a period of time, the solid suspended matter and macromolecular organic matter in the sewage adhere to the surface of the membrane component, which will cause its filtration efficiency to gradually decrease. This phenomenon not only causes a decrease in treatment efficiency, but also increases treatment costs. Therefore, in order to maintain the normal operation of the equipment, the membrane component must be cleaned regularly. At present, the main way to clean the membrane component is to disassemble it and clean it offline.

[0005] However, this offline cleaning method requires shutdown and disassembly of the membrane assembly, which is complicated and affects production efficiency. Therefore, how to optimize the cleaning process of the membrane assembly to achieve efficient and continuous operation has become a technical problem that needs to be solved urgently. Summary of the invention

[0006] The present invention provides a membrane separation device for solving the technical problems in the prior art that the cleaning operation is complicated and the sewage treatment efficiency is affected due to the need to disassemble and clean the membrane assembly offline.

[0007] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions: The present invention provides a membrane separation device, comprising: a sewage storage component, a sewage collection component, a target liquid storage component, a cleaning component, a first delivery pipe, a second delivery pipe, a first membrane component, a second membrane component, a first cleaning valve, a second cleaning valve, a first drive component, a second drive component, a first control valve and a second control valve; the sewage storage component has a sewage storage chamber, a first sewage outlet and a second sewage outlet; the first sewage outlet and the second sewage outlet can be connected to the sewage storage chamber respectively; the sewage collection component has a sewage storage chamber, a first sewage inlet and a second sewage inlet; the first sewage inlet and the second sewage inlet can be connected to the sewage storage chamber respectively; the target liquid storage component has a target liquid storage chamber, a first target liquid inlet and a second target liquid inlet; the first target liquid inlet and the second target liquid inlet can be connected to the target liquid storage chamber respectively; the cleaning component has an inner cavity, a cleaning liquid inlet, a first cleaning liquid outlet and a second cleaning liquid outlet; the cleaning liquid inlet is connected to the first cleaning liquid outlet and the second cleaning liquid outlet through the inner cavity; one end of the first delivery pipe is connected to the first sewage outlet, and the other end of the first delivery pipe is connected to the first target liquid inlet; the side wall of the first delivery pipe has a first connecting port and a second connecting port; the first connecting port is connected to the first cleaning liquid outlet; the second connecting port is connected to the first dirt inlet; one end of the second delivery pipe is connected to the second sewage outlet, and the second delivery pipe The other end is connected to the second target liquid inlet; the side wall of the second delivery pipe has a third communication port and a fourth communication port; the third communication port is connected to the second cleaning liquid outlet; the fourth communication port is connected to the second dirt inlet; the first membrane assembly is arranged in the first delivery pipe and is located between the first communication port and the second communication port; the second membrane assembly is arranged in the second delivery pipe and is located between the third communication port and the fourth communication port; the first cleaning valve is arranged in the inner cavity and is located at the first cleaning liquid outlet; the second cleaning valve is arranged in the inner cavity and is located at the second cleaning liquid outlet; the first drive assembly is connected to the first membrane assembly; the second drive assembly is connected to the second Membrane assembly; the first control valve is arranged in the first delivery pipe and is located between the first drive assembly and the first target liquid inlet; the second control valve is arranged in the second delivery pipe and is located between the second drive assembly and the second target liquid inlet; wherein the membrane separation device includes a first state, a second state, a third state and a fourth state; in the first state, the first cleaning valve, the first drive assembly and the second control valve are opened, and the second cleaning valve, the second drive assembly and the first control valve are closed; in the second state, the first cleaning valve, the second cleaning valve, the first drive assembly, the second drive assembly and the second control valve are closed, and the first control valve is opened;In the third state, the second cleaning valve, the second drive assembly and the first control valve are open, and the first cleaning valve, the first drive assembly and the second control valve are closed; in the fourth state, the first cleaning valve, the second cleaning valve, the first drive assembly, the second drive assembly and the first control valve are closed, and the second control valve is open. ;

[0008] According to one embodiment of the present invention, the first driving assembly includes a first annular motor, which is coaxially arranged in the first conveying pipe, and the first annular motor includes a first rotor; the first membrane assembly cover is arranged at the end of the first rotor; the second driving assembly includes a second annular motor, which is coaxially arranged in the second conveying pipe, and the second annular motor includes a second rotor; the second membrane assembly cover is arranged at the end of the second rotor.

[0009] According to one embodiment of the present invention, it also includes a first pressure sensor, a second pressure sensor, a first flow sensor and a second flow sensor; the first pressure sensor is arranged in the first delivery pipe and is located between the first sewage outlet and the first membrane assembly, and is used to obtain the pressure of the liquid in the first delivery pipe; the second pressure sensor is arranged in the second delivery pipe and is located between the second sewage outlet and the second membrane assembly, and is used to obtain the pressure of the liquid in the second delivery pipe; the first flow sensor is arranged in the first delivery pipe and is located between the first control valve and the first target liquid inlet, and is used to obtain the flow rate of the liquid in the first delivery pipe; the second flow sensor is arranged in the second delivery pipe and is located between the second control valve and the second target liquid inlet, and is used to obtain the flow rate of the liquid in the second delivery pipe.

[0010] According to one embodiment of the present invention, it also includes a controller, which is electrically connected to the first pressure sensor, the second pressure sensor, the first flow sensor, the second flow sensor, the first cleaning valve, the second cleaning valve, the first drive assembly, the second drive assembly, the first control valve and the second control valve; wherein, the state in which the pressure of the liquid in the first delivery pipe is greater than the preset pressure value and its flow rate is lower than the preset flow value corresponds to the first state; the state in which the pressure of the liquid in the first delivery pipe is less than the preset pressure value and its flow rate is higher than the preset flow value corresponds to the second state; the state in which the pressure of the liquid in the second delivery pipe is greater than the preset pressure value and its flow rate is lower than the preset flow value corresponds to the third state; the state in which the pressure of the liquid in the second delivery pipe is less than the preset pressure value and its flow rate is higher than the preset flow value corresponds to the fourth state.

[0011] According to one embodiment of the present invention, it also includes a first sewage delivery pump and a second sewage delivery pump; the first sewage delivery pump is arranged on the first delivery pipe and is located between the first sewage outlet and the first pressure sensor; the second sewage delivery pump is arranged on the second delivery pipe and is located between the second sewage outlet and the second pressure sensor.

[0012] According to one embodiment of the present invention, the first conveying pipe includes a first straight segment, a first inclined segment and a second straight segment connected in sequence; the first straight segment is arranged in a horizontal direction, and the free end of the first straight segment is connected to the first sewage outlet; the first inclined segment is arranged to be inclined downward along the flow direction of sewage in the first straight segment; the second straight segment is arranged in a horizontal direction, and the free end of the second straight segment is connected to the first target liquid inlet, and the side wall of the connecting end of the second straight segment has the first connecting port and the second connecting port; the first sewage conveying pump is arranged on the first straight segment; the first pressure sensor is arranged on the first straight segment; the first annular motor is coaxially arranged on the second straight segment; the first control valve is arranged on the second straight segment; the first flow sensor is arranged on the second straight segment.

[0013] According to one embodiment of the present invention, the second delivery pipe includes a third straight segment, a second inclined segment and a fourth straight segment connected in sequence; the third straight segment is arranged in a horizontal direction, and the free end of the third straight segment is connected to the second sewage outlet; the second inclined segment is arranged to be inclined downward along the flow direction of sewage in the third straight segment; the fourth straight segment is arranged in a horizontal direction, and the free end of the fourth straight segment is connected to the second target liquid inlet, and the side wall of the connecting end of the fourth straight segment has the third connecting port and the fourth connecting port; the second sewage delivery pump is arranged on the third straight segment; the second pressure sensor is arranged on the third straight segment; the second annular motor is coaxially arranged on the fourth straight segment; the second control valve is arranged on the fourth straight segment; the second flow sensor is arranged on the fourth straight segment.

[0014] According to one embodiment of the present invention, it further includes a first sewage inlet valve, which is arranged in the sewage storage chamber and located at the first sewage inlet; the controller is electrically connected to the first sewage inlet valve; wherein, in the first state, the controller controls the first sewage inlet valve to open; and in the second state, the controller controls the first sewage inlet valve to close.

[0015] According to one embodiment of the present invention, it further includes a second sewage inlet valve, which is arranged in the sewage storage chamber and located at the second sewage inlet; the controller is electrically connected to the second sewage inlet valve; wherein, in the third state, the controller controls the second sewage inlet valve to open; and in the fourth state, the controller controls the second sewage inlet valve to close.

[0016] According to one embodiment of the present invention, it also includes a first one-way valve and a second one-way valve; the first one-way valve is arranged on the first straight line segment and is located downstream of the first sewage delivery pump; the second one-way valve is arranged on the third straight line segment and is located downstream of the second sewage delivery pump.

[0017] The characteristics and advantages of the membrane separation device of the present invention are: The membrane separation device realizes online cleaning of the membrane assembly through innovative design without stopping for disassembly, thereby significantly improving the efficiency of sewage treatment and simplifying the operation of cleaning the membrane assembly. The core of its design is to set up two delivery pipes (the first delivery pipe and the second delivery pipe) and matching membrane assemblies (the first membrane assembly and the second membrane assembly). When one delivery pipe (for example, the first delivery pipe) is blocked, it can switch to another delivery pipe (the second delivery pipe) to continue sewage treatment. Taking the blockage of the first delivery pipe as an example, when the first delivery pipe is blocked, the membrane separation device switches to the first state, opens the first cleaning valve, and allows the cleaning liquid to flow from the inner cavity of the cleaning assembly into the first delivery pipe to flush the first membrane assembly. At the same time, the first drive assembly is started to move the first membrane assembly, so that the cleaning liquid flushes different positions of the first membrane assembly, thereby ensuring the comprehensive cleaning of the first membrane assembly. The flushed blockage (solid suspended matter and macromolecular organic matter) and the used cleaning liquid flow into the sewage collection assembly through the first dirt inlet. To prevent the used cleaning liquid from flowing into the target liquid storage assembly, the first control valve is closed. At the same time, the second cleaning valve and the second driving assembly remain closed, and the second control valve is opened, so that the sewage treatment is carried out through the second delivery pipe. The sewage in the sewage storage assembly enters the second delivery pipe through the second sewage outlet, and after being treated by the second membrane assembly, enters the target liquid storage assembly.

[0018] Through this multi-state switching design, the membrane separation device can clean the corresponding membrane components in the first and third states, and operate normally in the second and fourth states. This design realizes online cleaning and continuous operation of the system without stopping for disassembly, avoiding the waste of time and manpower caused by traditional manual disassembly, thereby ensuring continuous and efficient sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a three-dimensional diagram of a membrane separation device of the present invention at one angle; Figure 2 is a three-dimensional diagram of the membrane separation device of the present invention from another angle; Figure 3 is a top view of the membrane separation device of the present invention; Figure 4 yes Figure 3 A cross-sectional view along the AA direction is shown in the figure, in which a cleaning component is also cut out; Figure 5 yes Figure 4 Enlarged view of middle C; Figure 6 yes Figure 3 A cross-sectional view along the BB direction is shown in the figure, in which a cleaning component is also cut out; Figure 7 yes Figure 6 Enlarged view of the middle D part; Figure 8 is a schematic diagram of a first state of the present invention; Fig. 9 is a schematic diagram of the second state of the present invention; Fig.10 is a schematic diagram of the third state of the present invention; Fig.11 is a schematic diagram of a fourth state of the present invention; Fig.12 The control principle diagram of the present invention.

[0021] Reference numerals: 1. Sewage storage component; 101. Sewage storage chamber; 102. First sewage outlet; 103. Second sewage outlet; 2. Sewage collection component; 201. Sewage storage chamber; 202. First sewage inlet; 203. Second sewage inlet; 3. Target liquid storage component; 301. Target liquid storage chamber; 302. First target liquid inlet; 303. Second target liquid inlet; 4. Cleaning component; 401. Inner chamber; 402. Cleaning liquid inlet; 403. First cleaning liquid outlet; 404. Second cleaning liquid outlet; 5. First delivery pipe; 501. First straight segment; 502. First inclined segment; 503. Second straight segment; 5031. First connecting port; 5032. Second connecting port; 6. Second delivery pipe; 601. Third straight segment; 602. Second inclined segment Oblique section; 603, fourth straight section; 6031, third connecting port; 6032, fourth connecting port; 7, first membrane assembly; 8, second membrane assembly; 9, first cleaning valve; 10, second cleaning valve; 11, first drive assembly; 111, first annular motor; 1111, first rotor; 12, second drive assembly; 121, second annular motor; 1211, second rotor; 13, first control valve; 14, second control valve; 15, first pressure sensor; 16, second pressure sensor; 17, first flow sensor; 18, second flow sensor; 19, controller; 20, first sewage pump; 21, second sewage pump; 22, first sewage inlet valve; 23, second sewage inlet valve; 24, first one-way valve; 25, second one-way valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "at least one" means one or more, and "a plurality of" means two or more. The use of the term "may" here is intended to indicate that any attribute described in "may" is optional.

[0024] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0025] like Figures 1 to 12As shown, the present invention provides a membrane separation device, comprising: a sewage storage component 1, a sewage collection component 2, a target liquid storage component 3, a cleaning component 4, a first delivery pipe 5, a second delivery pipe 6, a first membrane component 7, a second membrane component 8, a first cleaning valve 9, a second cleaning valve 10, a first drive component 11, a second drive component 12, a first control valve 13 and a second control valve 14; the sewage storage component 1 has a sewage storage chamber 101, a first sewage outlet 102 and a second sewage outlet 103; the first sewage outlet 102 and the second sewage outlet 103 can be connected to the sewage storage chamber 101 respectively; the sewage collection component 2 has a sewage storage chamber 201, a first sewage inlet 202 and a second sewage inlet 203; the first sewage inlet The first sewage outlet 102 and the second sewage outlet 203 can be connected to the sewage storage chamber 201 respectively; the target liquid storage component 3 has a target liquid storage chamber 301, a first target liquid inlet 302 and a second target liquid inlet 303; the first target liquid inlet 302 and the second target liquid inlet 303 can be connected to the target liquid storage chamber 301 respectively; the cleaning component 4 has an inner cavity 401, a cleaning liquid inlet 402, a first cleaning liquid outlet 403 and a second cleaning liquid outlet 404; the cleaning liquid inlet 402 is connected to the first cleaning liquid outlet 403 and the second cleaning liquid outlet 404 through the inner cavity 401; one end of the first delivery pipe 5 is connected to the first sewage outlet 102, and the other end of the first delivery pipe 5 is connected to the first target liquid inlet 302; the side of the first delivery pipe 5 The wall has a first communication port 5031 and a second communication port 5032; the first communication port 5031 is connected to the first cleaning liquid outlet 403; the second communication port 5032 is connected to the first sewage inlet 202; one end of the second delivery pipe 6 is connected to the second sewage outlet 103, and the other end of the second delivery pipe 6 is connected to the second target liquid inlet 303; the side wall of the second delivery pipe 6 has a third communication port 6031 and a fourth communication port 6032; the third communication port 6031 is connected to the second cleaning liquid outlet 404; the fourth communication port 6032 is connected to the second sewage inlet 203; the first membrane assembly 7 is arranged in the first delivery pipe 5 and is located between the first communication port 5031 and the second communication port 5032; the second membrane assembly 8 is arranged in the second delivery pipe 6, and is located between the third communication port 6031 and the fourth communication port 6032; the first cleaning valve 9 is arranged in the inner cavity 401, and is located at the first cleaning liquid outlet 403; the second cleaning valve 10 is arranged in the inner cavity 401, and is located at the second cleaning liquid outlet 404; the first drive component 11 is connected to the first membrane component 7; the second drive component 12 is connected to the second membrane component 8; the first control valve 13 is arranged in the first delivery pipe 5, and is located between the first drive component 11 and the first target liquid inlet 302; the second control valve 14 is arranged in the second delivery pipe 6, and is located between the second drive component 12 and the second target liquid inlet 303; wherein the membrane separation device includes a first state, a second state, a third state and a fourth state; as Figure 8As shown, in the first state, the first cleaning valve 9, the first drive assembly 11 and the second control valve 14 are opened, and the second cleaning valve 10, the second drive assembly 12 and the first control valve 13 are closed; Fig. 9 As shown, in the second state, the first cleaning valve 9, the second cleaning valve 10, the first drive assembly 11, the second drive assembly 12 and the second control valve 14 are closed, and the first control valve 13 is opened; Fig.10 As shown, in the third state, the second cleaning valve 10, the second drive assembly 12 and the first control valve 13 are opened, and the first cleaning valve 9, the first drive assembly 11 and the second control valve 14 are closed; Fig.11 As shown, in the fourth state, the first cleaning valve 9, the second cleaning valve 10, the first driving assembly 11, the second driving assembly 12 and the first control valve 13 are closed, and the second control valve 14 is opened.

[0026] In specific implementation, the membrane separation device realizes online cleaning of the membrane assembly through innovative design without stopping for disassembly, thereby significantly improving the efficiency of sewage treatment and simplifying the operation of cleaning the membrane assembly. The core of its design is to set two delivery pipes (the first delivery pipe 5 and the second delivery pipe 6) and matching membrane assemblies (the first membrane assembly 7 and the second membrane assembly 8). When one delivery pipe (for example, the first delivery pipe 5) is blocked, it can be switched to use another delivery pipe (the second delivery pipe 6) to continue sewage treatment. Taking the blockage of the first delivery pipe 5 as an example, when the first delivery pipe 5 is blocked, the membrane separation device switches to the first state, opens the first cleaning valve 9, and allows the cleaning liquid to flow from the inner cavity 401 of the cleaning assembly 4 into the first delivery pipe 5 to flush the first membrane assembly 7. At the same time, the first drive assembly 11 is started to move the first membrane assembly 7, so that the cleaning liquid flushes different positions of the first membrane assembly 7, thereby ensuring the comprehensive cleaning of the first membrane assembly 7. The flushed blockage (solid suspended matter and macromolecular organic matter) and the used cleaning liquid flow into the sewage collection assembly 2 through the first sewage inlet 202. To prevent the used cleaning liquid from flowing into the target liquid storage assembly 3, the first control valve 13 is closed. At the same time, the second cleaning valve 10 and the second driving assembly 12 remain closed, and the second control valve 14 is opened, so that the sewage treatment is carried out through the second delivery pipe 6. The sewage in the sewage storage assembly 1 enters the second delivery pipe 6 through the second sewage outlet 103, and enters the target liquid storage assembly 3 after being treated by the second membrane assembly 8.

[0027] Through this multi-state switching design, the membrane separation device can clean the corresponding membrane components in the first and third states, and operate normally in the second and fourth states. This design realizes online cleaning and continuous operation of the system without stopping for disassembly, avoiding the waste of time and manpower caused by traditional manual disassembly, thereby ensuring continuous and efficient sewage treatment.

[0028] In this embodiment, the sewage storage component 1, the sewage collection component 2 and the target liquid storage component 3 are essentially a container; the cleaning component 4 can be composed of four tubes, and the cleaning liquid inlet 402 of the cleaning component 4 can be connected to a tap; the first membrane component 7 and the second membrane component 8 can be existing technologies.

[0029] According to one embodiment of the present invention, the first drive component 11 includes a first annular motor 111, which is coaxially arranged in the first conveying pipe 5, and the first annular motor 111 includes a first rotor 1111; the first membrane component 7 is covered at the end of the first rotor 1111; the second drive component 12 includes a second annular motor 121, which is coaxially arranged in the second conveying pipe 6, and the second annular motor 121 includes a second rotor 1211; the second membrane component 8 is covered at the end of the second rotor 1211.

[0030] In specific implementation, the first drive assembly 11 is composed of a first annular motor 111, which is coaxially arranged in the first conveying pipe 5 and includes a first rotor 1111, and the first membrane assembly 7 is covered at the end of the first rotor 1111. Similarly, the second drive assembly 12 is composed of a second annular motor 121, which is coaxially arranged in the second conveying pipe 6 and includes a second rotor 1211, and the second membrane assembly 8 is covered at the end of the second rotor 1211. Through this design, when the membrane assembly (such as the first membrane assembly 7) needs to be cleaned, the annular motor (such as the first annular motor 111) can drive the corresponding membrane assembly (such as the first membrane assembly 7) to rotate, so that the cleaning liquid flushes different positions on the surface of the membrane assembly (such as the first membrane assembly 7), thereby achieving a more comprehensive and effective cleaning of the membrane assembly (such as the first membrane assembly 7). This design improves the cleaning efficiency of the membrane assembly (such as the first membrane assembly 7), reduces the residue of blockages, and helps to maintain a long-term high-efficiency filtration performance. At the same time, the coaxial design of the annular motor (such as the first annular motor 111) makes the structure of the drive assembly (such as the first drive assembly 11) and the delivery pipe (such as the first delivery pipe 5) more compact, and optimizes the space utilization. In addition, when the cleaning liquid flows through the membrane assembly (such as the first membrane assembly 7), it will exchange heat with it. When the membrane assembly (such as the first membrane assembly 7) is connected to the rotor (such as the first rotor 1111) of the annular motor (such as the first annular motor 111), the cleaning liquid can take away part of the heat generated by the annular motor (such as the first annular motor 111) during the process of flowing through the membrane assembly (such as the first membrane assembly 7), thereby helping the annular motor (such as the first annular motor 111) to maintain within an appropriate operating temperature range and avoid overheating problems. In addition, the first annular motor 111 is located downstream (backwater side) of the first membrane assembly 7, and the second annular motor 121 is located downstream (backwater side) of the second membrane assembly 8, which can prevent impurities in the sewage from impacting the first annular motor 111 and the second annular motor 121, and prevent impurities from affecting the waterproof performance of the first annular motor 111 and the second annular motor 121.

[0031] It is understandable that the ring motor needs to have good waterproof performance.

[0032] According to one embodiment of the present invention, it also includes a first pressure sensor 15, a second pressure sensor 16, a first flow sensor 17 and a second flow sensor 18; the first pressure sensor 15 is arranged in the first delivery pipe 5 and is located between the first sewage outlet 102 and the first membrane assembly 7, and is used to obtain the pressure of the liquid in the first delivery pipe 5; the second pressure sensor 16 is arranged in the second delivery pipe 6 and is located between the second sewage outlet 103 and the second membrane assembly 8, and is used to obtain the pressure of the liquid in the second delivery pipe 6; the first flow sensor 17 is arranged in the first delivery pipe 5 and is located between the first control valve 13 and the first target liquid inlet 302, and is used to obtain the flow rate of the liquid in the first delivery pipe 5; the second flow sensor 18 is arranged in the second delivery pipe 6 and is located between the second control valve 14 and the second target liquid inlet 303, and is used to obtain the flow rate of the liquid in the second delivery pipe 6.

[0033] In specific implementation, through the above-mentioned structural setting, it can be determined whether the first membrane assembly 7 in the first delivery pipe 5 and the second membrane assembly 8 in the second delivery pipe 6 are blocked. For example, when the pressure of the liquid in the first delivery pipe 5 is greater than the preset pressure value and its flow rate is lower than the preset flow rate value, it means that the first membrane assembly 7 in the first delivery pipe 5 is blocked and needs to be cleaned; when the pressure of the liquid in the second delivery pipe 6 is greater than the preset pressure value and its flow rate is lower than the preset flow rate value, it means that the second membrane assembly 8 in the second delivery pipe 6 is blocked and needs to be cleaned.

[0034] According to one embodiment of the present invention, it also includes a controller 19, which is electrically connected to the first pressure sensor 15, the second pressure sensor 16, the first flow sensor 17, the second flow sensor 18, the first cleaning valve 9, the second cleaning valve 10, the first drive component 11, the second drive component 12, the first control valve 13 and the second control valve 14; wherein, the state in which the pressure of the liquid in the first delivery pipe 5 is greater than the preset pressure value and its flow rate is lower than the preset flow value corresponds to the first state; the state in which the pressure of the liquid in the first delivery pipe 5 is less than the preset pressure value and its flow rate is higher than the preset flow value corresponds to the second state; the state in which the pressure of the liquid in the second delivery pipe 6 is greater than the preset pressure value and its flow rate is lower than the preset flow value corresponds to the third state; the state in which the pressure of the liquid in the second delivery pipe 6 is less than the preset pressure value and its flow rate is higher than the preset flow value corresponds to the fourth state.

[0035] In specific implementation, the controller 19 is electrically connected to the first pressure sensor 15, the second pressure sensor 16, the first flow sensor 17 and the second flow sensor 18, and obtains the pressure and flow data of the liquid in the first and second delivery pipes 6 in real time, and switches between the first to fourth states according to these data. When the liquid pressure in the first delivery pipe 5 exceeds the preset pressure value and the flow rate is lower than the preset flow rate value, it means that the first membrane assembly 7 is blocked. Under the action of the controller 19, the membrane separation device is switched to the first state to achieve the cleaning of the first membrane assembly 7. When the pressure of the first delivery pipe 5 is lower than the preset pressure value and the flow rate is higher than the preset flow rate value, it means that the first membrane assembly 7 is not blocked. Under the action of the controller 19, the membrane separation device is switched to the second state to maintain normal operation. When the pressure of the second delivery pipe 6 is higher than the preset pressure value and the flow rate is lower than the preset flow rate value, it means that the second membrane assembly 8 is blocked. Under the action of the controller 19, the membrane separation device enters the third state to achieve the cleaning of the second membrane assembly 8. When the pressure of the second delivery pipe 6 is lower than the preset pressure value and the flow rate is higher than the preset flow rate value, it means that the second membrane assembly 8 is not blocked. Under the action of the controller 19, the membrane separation device is switched to the fourth state and continues to operate normally. The controller 19 realizes automatic switching of the device status through intelligent analysis of liquid pressure and flow without human intervention, thereby improving the automation level and overall efficiency of equipment operation and ensuring the stability and continuity of the sewage treatment process.

[0036] According to one embodiment of the present invention, it also includes a first sewage conveying pump 20 and a second sewage conveying pump 21; the first sewage conveying pump 20 is arranged on the first conveying pipe 5 and is located between the first sewage outlet 102 and the first pressure sensor 15; the second sewage conveying pump 21 is arranged on the second conveying pipe 6 and is located between the second sewage outlet 103 and the second pressure sensor 16.

[0037] In specific implementation, the first sewage delivery pump 20 is arranged in the first delivery pipe 5, between the first sewage outlet 102 and the first membrane assembly 7, to ensure that the sewage maintains stable fluidity and pressure during the delivery process, thereby improving the treatment efficiency of the first membrane assembly 7. The second sewage delivery pump 21 is arranged at a corresponding position of the second delivery pipe 6, corresponding to the operation of the second membrane assembly 8, and plays the same role.

[0038] According to one embodiment of the present invention, the controller 19 is electrically connected to the first sewage pump 20 and the second sewage pump 21. In the first state, the controller 19 turns off the first sewage pump 20 and turns on the second sewage pump 21; in the second state, the controller 19 turns on the first sewage pump 20 and turns off the second sewage pump 21; in the third state, the controller 19 turns on the first sewage pump 20 and turns off the second sewage pump 21; in the fourth state, the controller 19 turns off the first sewage pump 20 and turns on the second sewage pump 21.

[0039] According to one embodiment of the present invention, the first delivery pipe 5 includes a first straight segment 501, a first inclined segment 502 and a second straight segment 503 connected in sequence; the first straight segment 501 is arranged in a horizontal direction, and the free end of the first straight segment 501 is connected to the first sewage outlet 102; the first inclined segment 502 is arranged to be inclined downward along the flow direction of sewage in the first straight segment 501; the second straight segment 503 is arranged in a horizontal direction, and the free end of the second straight segment 503 is connected to the first target liquid inlet 302, and the side wall of the connecting end of the second straight segment 503 has a first connecting port 5031 and a second connecting port 5032; the first sewage delivery pump 20 is arranged on the first straight segment 501; the first pressure sensor 15 is arranged on the first straight segment 501; the first annular motor 111 is coaxially arranged on the second straight segment 503; the first control valve 13 is arranged on the second straight segment 503; and the first flow sensor 17 is arranged on the second straight segment 503.

[0040] During specific implementation, the first inclined section 502 is inclined downward along the flow direction of the sewage, which helps to accelerate the flow of sewage by utilizing gravity, reduces the burden on the first sewage delivery pump 20, and improves the delivery efficiency.

[0041] According to one embodiment of the present invention, the second delivery pipe 6 includes a third straight segment 601, a second inclined segment 602 and a fourth straight segment 603 connected in sequence; the third straight segment 601 is arranged in a horizontal direction, and the free end of the third straight segment 601 is connected to the second sewage outlet 103; the second inclined segment 602 is arranged to be inclined downward along the flow direction of sewage in the third straight segment 601; the fourth straight segment 603 is arranged in a horizontal direction, and the free end of the fourth straight segment 603 is connected to the second target liquid inlet 303, and the side wall of the connecting end of the fourth straight segment 603 has a third connecting port 6031 and a fourth connecting port 6032; the second sewage delivery pump 21 is arranged on the third straight segment 601; the second pressure sensor 16 is arranged on the third straight segment 601; the second annular motor 121 is coaxially arranged on the fourth straight segment 603; the second control valve 14 is arranged on the fourth straight segment 603; the second flow sensor 18 is arranged on the fourth straight segment 603.

[0042] During specific implementation, the first inclined section 502 is inclined downward along the flow direction of the sewage, which helps to accelerate the flow of sewage by utilizing gravity, reduces the burden on the second sewage delivery pump 21, and improves the delivery efficiency.

[0043] According to one embodiment of the present invention, it also includes a first sewage inlet valve 22, which is arranged in the sewage storage chamber 201 and located at the first sewage inlet 202; the controller 19 is electrically connected to the first sewage inlet valve 22; wherein, in a first state, the controller 19 controls the first sewage inlet valve 22 to open; in a second state, the controller 19 controls the first sewage inlet valve 22 to close.

[0044] In specific implementation, in the first state, it means that the first membrane assembly 7 is blocked, and the controller 19 controls the first sewage inlet valve 22 to open, so that the blockage washed from the first membrane assembly 7 during the cleaning process and the used cleaning liquid can smoothly enter the sewage storage chamber 201 for collection, so as to avoid the accumulation of blockage and used cleaning liquid affecting the operation of the membrane separation device. In the second state, it means that the first membrane assembly 7 is not blocked, and the controller 19 controls the first sewage inlet valve 22 to close, and all the sewage to be treated flowing out through the first sewage outlet 102 flows to the first membrane assembly 7, and the sewage to be treated will not flow to other places (sewage storage chamber 201), so the sewage flow is large and concentrated, which can improve the sewage treatment efficiency.

[0045] According to one embodiment of the present invention, it also includes a second sewage inlet valve 23, which is arranged in the sewage storage chamber 201 and located at the second sewage inlet 203; the controller 19 is electrically connected to the second sewage inlet valve 23; wherein, in the third state, the controller 19 controls the second sewage inlet valve 23 to open; in the fourth state, the controller 19 controls the second sewage inlet valve 23 to close.

[0046] In specific implementation, in the third state, it means that the second membrane assembly 8 is blocked, and the controller 19 controls the second sewage inlet valve 23 to open, so that the blockage washed from the second membrane assembly 8 during the cleaning process and the used cleaning liquid smoothly enter the sewage storage chamber 201 for collection, avoiding the accumulation of blockage and used cleaning liquid affecting the operation of the membrane separation device. In the fourth state, it means that the second membrane assembly 8 is not blocked, and the controller 19 controls the second sewage inlet valve 23 to close, and the sewage to be treated flowing out through the second sewage outlet 103 all flows to the second membrane assembly 8, and the sewage to be treated will not flow to other places (sewage storage chamber 201), and the water flow is large and concentrated, which can improve the sewage treatment efficiency.

[0047] According to one embodiment of the present invention, it also includes a first one-way valve 24 and a second one-way valve 25; the first one-way valve 24 is arranged on the first straight line segment 501 and is located downstream of the first sewage delivery pump 20; the second one-way valve 25 is arranged on the third straight line segment 601 and is located downstream of the second sewage delivery pump 21.

[0048] In specific implementation, the membrane separation device provides effective one-way control during the liquid flow process by setting the first one-way valve 24 and the second one-way valve 25, ensuring that the water always flows in the right direction and avoiding instability in system operation caused by reverse flow.

[0049] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A membrane separation device, characterized in that: include: A sewage storage component (1), a sewage collection component (2), a target liquid storage component (3), a cleaning component (4), a first delivery pipe (5), a second delivery pipe (6), a first membrane component (7), a second membrane component (8), a first cleaning valve (9), a second cleaning valve (10), a first drive component (11), a second drive component (12), a first control valve (13), and a second control valve (14); The sewage storage component (1) comprises a sewage storage chamber (101), a first sewage outlet (102) and a second sewage outlet (103); the first sewage outlet (102) and the second sewage outlet (103) can be respectively connected to the sewage storage chamber (101); The dirt collection component (2) comprises a dirt storage chamber (201), a first dirt inlet (202) and a second dirt inlet (203); the first dirt inlet (202) and the second dirt inlet (203) can be respectively connected to the dirt storage chamber (201); The target liquid storage component (3) comprises a target liquid storage chamber (301), a first target liquid inlet (302) and a second target liquid inlet (303); the first target liquid inlet (302) and the second target liquid inlet (303) can be connected to the target liquid storage chamber (301) respectively; The cleaning component (4) comprises an inner cavity (401), a cleaning liquid inlet (402), a first cleaning liquid outlet (403) and a second cleaning liquid outlet (404); the cleaning liquid inlet (402) is connected to the first cleaning liquid outlet (403) and the second cleaning liquid outlet (404) through the inner cavity (401); One end of the first delivery pipe (5) is connected to the first sewage outlet (102), and the other end of the first delivery pipe (5) is connected to the first target liquid inlet (302); the side wall of the first delivery pipe (5) has a first communication port (5031) and a second communication port (5032); the first communication port (5031) is connected to the first cleaning liquid outlet (403); the second communication port (5032) is connected to the first waste inlet (202); One end of the second delivery pipe (6) is connected to the second sewage outlet (103), and the other end of the second delivery pipe (6) is connected to the second target liquid inlet (303); the side wall of the second delivery pipe (6) has a third communication port (6031) and a fourth communication port (6032); the third communication port (6031) is connected to the second cleaning liquid outlet (404); the fourth communication port (6032) is connected to the second waste inlet (203); The first membrane assembly (7) is arranged in the first delivery pipe (5) and is located between the first communication port (5031) and the second communication port (5032); The second membrane assembly (8) is arranged in the second delivery pipe (6) and is located between the third communication port (6031) and the fourth communication port (6032); The first cleaning valve (9) is arranged in the inner cavity (401) and is located at the first cleaning liquid outlet (403); The second cleaning valve (10) is arranged in the inner cavity (401) and is located at the second cleaning liquid outlet (404); The first driving component (11) is connected to the first membrane component (7); The second driving component (12) is connected to the second membrane component (8); The first control valve (13) is arranged in the first delivery pipe (5) and is located between the first drive assembly (11) and the first target liquid inlet (302); The second control valve (14) is arranged in the second delivery pipe (6) and is located between the second drive assembly (12) and the second target liquid inlet (303); Wherein, the membrane separation device includes a first state, a second state, a third state and a fourth state; In the first state, the first cleaning valve (9), the first drive assembly (11) and the second control valve (14) are opened, and the second cleaning valve (10), the second drive assembly (12) and the first control valve (13) are closed; In the second state, the first cleaning valve (9), the second cleaning valve (10), the first drive assembly (11), the second drive assembly (12) and the second control valve (14) are closed, and the first control valve (13) is opened; In the third state, the second cleaning valve (10), the second drive assembly (12) and the first control valve (13) are opened, and the first cleaning valve (9), the first drive assembly (11) and the second control valve (14) are closed; In the fourth state, the first cleaning valve (9), the second cleaning valve (10), the first drive assembly (11), the second drive assembly (12) and the first control valve (13) are closed, and the second control valve (14) is opened.

2. The membrane separation device according to claim 1, characterized in that: The first driving assembly (11) comprises a first annular motor (111), the first annular motor (111) being coaxially arranged in the first conveying pipe (5), the first annular motor (111) comprising a first rotor (1111); the first membrane assembly (7) is covered at an end of the first rotor (1111); The second driving assembly (12) comprises a second annular motor (121), the second annular motor (121) is coaxially arranged in the second conveying pipe (6), the second annular motor (121) comprises a second rotor (1211); the second membrane assembly (8) is covered at an end of the second rotor (1211).

3. The membrane separation device according to claim 2, characterized in that: It also includes a first pressure sensor (15), a second pressure sensor (16), a first flow sensor (17) and a second flow sensor (18); The first pressure sensor (15) is arranged in the first delivery pipe (5) and is located between the first sewage outlet (102) and the first membrane assembly (7), and is used to obtain the pressure of the liquid in the first delivery pipe (5); The second pressure sensor (16) is arranged in the second delivery pipe (6) and is located between the second sewage outlet (103) and the second membrane assembly (8), and is used to obtain the pressure of the liquid in the second delivery pipe (6); The first flow sensor (17) is arranged in the first delivery pipe (5) and is located between the first control valve (13) and the first target liquid inlet (302), and is used to obtain the flow rate of the liquid in the first delivery pipe (5); The second flow sensor (18) is arranged in the second delivery pipe (6) and is located between the second control valve (14) and the second target liquid inlet (303), and is used to obtain the flow rate of the liquid in the second delivery pipe (6).

4. The membrane separation device according to claim 3, characterized in that: The device further comprises a controller (19), wherein the controller (19) is electrically connected to the first pressure sensor (15), the second pressure sensor (16), the first flow sensor (17), the second flow sensor (18), the first cleaning valve (9), the second cleaning valve (10), the first drive assembly (11), the second drive assembly (12), the first control valve (13) and the second control valve (14); wherein: The state in which the pressure of the liquid in the first delivery pipe (5) is greater than a preset pressure value and the flow rate thereof is lower than a preset flow rate value corresponds to the first state; The state in which the pressure of the liquid in the first delivery pipe (5) is less than the preset pressure value and the flow rate thereof is higher than the preset flow rate value corresponds to the second state; The state in which the pressure of the liquid in the second delivery pipe (6) is greater than the preset pressure value and the flow rate is lower than the preset flow rate value corresponds to the third state; The state in which the pressure of the liquid in the second delivery pipe (6) is less than the preset pressure value and the flow rate thereof is higher than the preset flow rate value corresponds to the fourth state.

5. The membrane separation device according to claim 4, characterized in that: It also includes a first sewage delivery pump (20) and a second sewage delivery pump (21); The first sewage delivery pump (20) is arranged on the first delivery pipe (5) and is located between the first sewage outlet (102) and the first pressure sensor (15); The second sewage delivery pump (21) is arranged on the second delivery pipe (6) and is located between the second sewage outlet (103) and the second pressure sensor (16).

6. The membrane separation device according to claim 5, characterized in that: The first conveying pipe (5) comprises a first straight section (501), a first inclined section (502) and a second straight section (503) which are connected in sequence; the first straight section (501) is arranged in a horizontal direction, and the free end of the first straight section (501) is connected to the first sewage outlet (102); the first inclined section (502) is arranged to be inclined downward along the flow direction of sewage in the first straight section (501); the second straight section (503) is arranged in a horizontal direction, and the free end of the second straight section (503) is connected to the first target liquid inlet (302); the side wall of the connecting end of the second straight section (503) has the first connecting port (5031) and the second connecting port (5032); The first sewage delivery pump (20) is arranged on the first straight line segment (501); The first pressure sensor (15) is arranged on the first straight line segment (501); The first annular motor (111) is coaxially arranged on the second straight line segment (503); The first control valve (13) is arranged on the second straight line segment (503); The first flow sensor (17) is arranged on the second straight line segment (503).

7. The membrane separation device according to claim 6, characterized in that: The second delivery pipe (6) comprises a third straight segment (601), a second inclined segment (602) and a fourth straight segment (603) which are connected in sequence; the third straight segment (601) is arranged in a horizontal direction, and the free end of the third straight segment (601) is connected to the second sewage outlet (103); the second inclined segment (602) is arranged to be inclined downward along the flow direction of sewage in the third straight segment (601); the fourth straight segment (603) is arranged in a horizontal direction, and the free end of the fourth straight segment (603) is connected to the second target liquid inlet (303), and the side wall of the connecting end of the fourth straight segment (603) has the third connecting port (6031) and the fourth connecting port (6032); The second sewage delivery pump (21) is arranged on the third straight line segment (601); The second pressure sensor (16) is arranged on the third straight line segment (601); The second annular motor (121) is coaxially arranged on the fourth straight line segment (603); The second control valve (14) is arranged on the fourth straight line segment (603); The second flow sensor (18) is arranged on the fourth straight line segment (603).

8. The membrane separation device according to any one of claims 4 to 7, characterized in that: It also includes a first waste inlet valve (22), which is arranged in the waste storage chamber (201) and located at the first waste inlet (202); The controller (19) is electrically connected to the first waste inlet valve (22); wherein: In the first state, the controller (19) controls the first waste inlet valve (22) to open; In the second state, the controller (19) controls the first sewage inlet valve (22) to be closed.

9. The membrane separation device according to any one of claims 4 to 7, characterized in that: It also includes a second waste inlet valve (23), which is arranged in the waste storage chamber (201) and located at the second waste inlet (203); The controller (19) is electrically connected to the second waste inlet valve (23); wherein: In the third state, the controller (19) controls the second waste inlet valve (23) to open; In the fourth state, the controller (19) controls the second sewage inlet valve (23) to be closed.

10. The membrane separation device according to claim 7, characterized in that: Also includes a first one-way valve (24) and a second one-way valve (25); The first one-way valve (24) is arranged on the first straight line segment (501) and is located downstream of the first sewage delivery pump (20); The second one-way valve (25) is arranged on the third straight line segment (601) and is located downstream of the second sewage delivery pump (21).

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