Solid-liquid separation device
By designing a solid-liquid separation device with spiral circulation and central filtration, the problems of low filtration accuracy and high energy consumption in existing technologies have been solved, achieving efficient and low-cost solid-liquid separation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGSHA HUASHI SEMICON CO LTD
- Filing Date
- 2026-04-08
- Publication Date
- 2026-05-12
AI Technical Summary
Existing solid-liquid separation devices for CNC grinding fluids suffer from problems such as limited filtration accuracy, high energy consumption, complex structure, large footprint, and insufficient centrifugation, making it difficult to meet the needs of high-precision machining.
A solid-liquid separation device was designed. By setting the inlet pipe at an inclination to form a spiral circulation, the mixture is separated into two streams with different solid-liquid ratios by centrifugal force. Combined with the filter section in the central area and the waste discharge pipe, efficient solid-liquid separation is achieved without the need for external power.
It achieves efficient solid-liquid separation, reduces energy consumption, simplifies the structure, and lowers filtration costs.
Smart Images
Figure CN122006334A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of water treatment technology, and in particular to a solid-liquid separation device. Background Technology
[0002] Currently, CNC grinding fluid is a special industrial coolant designed for use with CNC grinding machines. During use, the grinding fluid is prone to mixing with material debris, grinding wheel abrasives, and other impurities, which can affect machining accuracy and product yield.
[0003] In related technologies, solid-liquid separation devices for CNC grinding fluid mainly include paper filters, magnetic filters, and centrifugal separators. However, paper filters have limited filtration accuracy, require frequent filter element replacement, resulting in high operating costs and cumbersome maintenance; magnetic filters can only remove magnetic solid impurities, and their filtration effect on non-magnetic abrasives such as grinding wheels is extremely poor, making it difficult to meet the requirements of high-precision machining; traditional centrifugal separators often require external power (such as a motor) to drive the centrifugal mechanism, resulting in high energy consumption, complex structure, large footprint, and incomplete centrifugation. Summary of the Invention
[0004] In view of this, embodiments of this application provide a solid-liquid separation device, which aims to enable the solid-liquid separation device to have a better filtration effect and also reduce energy consumption.
[0005] This application provides a solid-liquid separation device, which includes:
[0006] The tank body has a separation cavity and a first inner circumferential surface that surrounds the separation cavity, and the tank body also has a first end and a second end arranged along the extension direction of the center line of the separation cavity; An inlet pipe is connected to the first end and is inclined from the first end toward the direction away from the second end. The inlet pipe is connected to the separation chamber and is used to guide the mixture into the separation chamber and flow along the first inner circumferential surface to form a spiral circulation that flows around the center line and toward the second end, and to separate the mixture into a first mixed flow near the center line and a second mixed flow near the first inner circumferential surface. The solid-liquid ratio of the first mixed flow is smaller than that of the second mixed flow. Waste discharge pipe, which is connected to the second end and communicates with the separation chamber, is used to guide the second mixed liquid in the separation chamber to flow outward; A filter section is disposed within the separation chamber, and the filter section is located in the central region of the separation chamber. The filter section is used to filter the first mixed liquid flow to form a clean liquid flow. The liquid outlet pipe is connected to the filter section and is used to guide the purified liquid to flow out of the separation chamber.
[0007] In some embodiments, the inlet pipe has a first axis, and the inlet pipe is used to guide the mixture into the separation chamber along the extension direction of the first axis; Wherein, the first axis is set at an angle to the center line, and the first axis and the center line form a first angle α, where α satisfies: 30°≤a≤45°.
[0008] In some embodiments, in the extension direction of the centerline, the projection of the first axis is a first straight line, the projection of the first inner circumferential surface is a first circular line, the first straight line and the first circular line intersect at a first point, and the first circular line has a first tangent passing through the first point. Wherein, the extension direction of the first straight line is parallel to the extension direction of the first tangent; or, The first straight line forms an angle with the first tangent, and the first straight line and the first tangent form a second angle b, where b satisfies: 0° <b≤5°。
[0009] In some embodiments, the inlet pipe includes: The first pipe segment is connected to the first end and communicates with the separation cavity; The second pipe segment is connected to the first pipe segment. The diameter of the second pipe segment is larger than that of the first pipe segment, and the diameter of the second pipe segment gradually decreases along the direction closer to the first pipe segment.
[0010] In some embodiments, a guide plate is provided on the first inner circumferential surface, the guide plate extends spirally around the center line, and the guide plate is used to guide the mixture to flow spirally around the center line.
[0011] In some embodiments, one end of the baffle plate near the second end extends to the connection between the waste discharge pipe and the tank.
[0012] In some embodiments, the waste discharge pipe has a second axis, which is used to guide the second mixed liquid flow out of the separation chamber along the extension direction of the second axis; Wherein, in the extension direction of the center line, the projection of the second axis is a second straight line, the projection of the first inner circumferential surface is a first circular line, the second straight line intersects the first circular line at a second point, and the first circular line has a second tangent passing through the second point; The extension direction of the second straight line is parallel to the extension direction of the second tangent; or, The second straight line is set at an angle to the second tangent, and the second straight line and the second tangent form a third angle c, where c satisfies: 0° <c≤5°。
[0013] In some embodiments, the inlet pipe is connected to a first position of the tank body, and the waste outlet pipe is connected to a second position of the tank body; The filter section is located between the first position and the second position, and along the extension direction of the center line, the distance between the filter section and the first position is greater than the distance between the filter section and the second position.
[0014] In some embodiments, the solid-liquid separation device further includes: A flow sensor is disposed inside the outlet pipe and is used to monitor the flow rate of the purified liquid. A regulating valve is disposed on the outlet pipe and is electrically connected to the flow sensor.
[0015] In some embodiments, the liquid outlet pipe is detachably connected to the filter section.
[0016] The solid-liquid separation device based on the above embodiments has at least the following beneficial effects: By connecting the inlet pipe to the first end of the tank, and with the inlet pipe inclined away from the second end, when the mixture flows at high speed into the separation chamber of the tank, it flows along the first inner circumferential surface of the tank, forming a spiral circulation that flows around the centerline of the tank and towards the second end. Under the centrifugal force generated by the spiral circulation, the solid particles in the mixture gradually converge towards the first inner circumferential surface of the tank, thereby separating the mixture into a first mixed flow and a second mixed flow. The first mixed flow is a liquid with fewer solid particles and is closer to the centerline, while the second mixed flow is a liquid with more solid particles. The liquid, and the second mixed liquid flow is close to the first inner circumferential surface. By connecting the waste discharge pipe to the second end of the tank and communicating the waste discharge pipe with the separation chamber, the second mixed liquid flow can be discharged outward from the waste discharge pipe. By setting the filter part in the central area of the separation chamber, the filter part can filter the first mixed liquid flow into a clean liquid flow. By communicating the liquid outlet pipe with the filter part, the clean liquid flow can flow outward from the liquid outlet pipe. Thus, the solid-liquid separation device can filter the mixed liquid into a clean liquid, so that the solid-liquid separation device has a good filtration effect. Moreover, the solid-liquid separation device does not require external power to drive it, which can greatly reduce energy consumption. The solid-liquid separation device has a simple structure and low filtration cost. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural schematic diagram of the solid-liquid separation device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the internal structure of the tank provided in an embodiment of this application; Figure 3 A side view of the solid-liquid separation apparatus provided in an embodiment of this application; Figure 4 The projection of the first axis and the first inner peripheral surface in the direction of extension of the centerline, as provided in the embodiments of this application; Figure 5 The projection of the second axis and the first inner circumferential surface in the direction of extension of the centerline, as provided in the embodiments of this application.
[0018] Explanation of reference numerals in the attached figures: 100. Solid-liquid separation device; 10. Tank body; 101. Separation chamber; 102. First inner circumferential surface; 11. First end; 12. Second end; 20. Inlet pipe; 21. First pipe section; 22. Second pipe section; 30. Waste discharge pipe; 40. Filter section; 50. Outlet pipe; 60. Guide plate; O, centerline; N1, first axis; N1', first straight line; M, first circle; M1, first tangent; M2, second tangent; N2, second axis; N2', second straight line. Detailed Implementation
[0019] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.
[0020] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
[0021] Please see Figures 1 to 3This application provides a solid-liquid separation device 100, which includes a tank 10, an inlet pipe 20, a waste discharge pipe 30, a filter section 40, and an outlet pipe 50. The tank 10 has a separation chamber 101 and a first inner circumferential surface 102 that surrounds the separation chamber 101. The tank 10 also has a first end 11 and a second end 12 arranged along the extension direction of the center line O of the separation chamber 101. The inlet pipe 20 is connected to the first end 11 and is inclined from the first end 11 away from the second end 12. The inlet pipe 20 communicates with the separation chamber 101 and is used to guide the mixed liquid into the separation chamber 101 and flow along the first inner circumferential surface 102. A spiral circulation is formed around the center line O and flows toward the second end 12 to separate the mixture into a first mixed flow near the center line O and a second mixed flow near the first inner circumferential surface 102. The solid-liquid ratio of the first mixed flow is less than that of the second mixed flow. The waste discharge pipe 30 is connected to the second end 12 and communicates with the separation chamber 101. The waste discharge pipe 30 is used to guide the second mixed flow in the separation chamber 101 to be discharged outward. The filter section 40 is disposed in the separation chamber 101 and is located in the central region of the separation chamber 101. The filter section 40 is used to filter the first mixed flow to form a clean liquid flow. The liquid outlet pipe 50 is communicated with the filter section 40 and is used to guide the clean liquid flow to flow out of the separation chamber 101.
[0022] Optionally, the tank 10 can be vertically mounted on the support platform, so that the tank 10 is vertically mounted. The inner contour shape of the tank 10 is similar to that of a cylinder, so that the separation cavity 101 of the tank 10 is a cylindrical cavity structure. The center line O of the separation cavity 101 is vertically mounted. The first inner circumferential surface 102 of the tank 10 extends around the center line O. The first end 11 is the top of the tank 10, and the second end 12 is the bottom of the tank 10.
[0023] The inlet pipe 20 is a straight circular pipe with a first end and a second end arranged opposite to each other. The first end of the inlet pipe 20 is connected to the first end 11, and the inlet pipe 20 is inclined from the first end 11 away from the second end 12. The second end of the inlet pipe 20 can communicate with the dirty liquid tank. The mixed liquid in the dirty liquid tank can flow into the separation chamber 101 at high speed under the suction of the water pump, and the mixed liquid can flow along the first inner circumferential surface 102 to form a spiral ring flowing around the center line O and towards the second end 12. Under the centrifugal force generated by the spiral ring flow, the solid particles in the mixed liquid will gradually converge towards the first inner circumferential surface 102 of the tank body 10, thereby separating the mixed liquid into a first mixed liquid flow and a second mixed liquid flow. The first mixed liquid flow is a liquid with fewer solid particles and is closer to the center line O. The second mixed liquid flow is a liquid with more solid particles and is closer to the first inner circumferential surface 102.
[0024] The filter section 40 is cylindrical in shape and is located in the central region of the separation chamber 101. The filter section 40 can filter the first mixed liquid flow and filter the solid particles in the first mixed liquid flow into the separation chamber 101. The outlet pipe 50 is a straight pipe and can pass through the second end 12 of the tank body 10. One end of the outlet pipe 50 is connected to the filter section 40, and the other end of the outlet pipe 50 extends out of the tank body 10. In this way, the clean liquid flow formed after filtration by the filter section 40 can flow out of the separation chamber 101 from the outlet pipe 50.
[0025] The waste discharge pipe 30 is a straight circular pipe. One end of the waste discharge pipe 30 can be connected to the second end 12, and the waste discharge pipe 30 is connected to the separation chamber 101. Thus, the waste discharge pipe 30 can guide the second mixed liquid to flow out of the separation chamber 101 and discharge the solid particles filtered out by the filter section 40 from the waste discharge pipe 30 to the outside of the separation chamber 101. Therefore, the solid-liquid separation device 100 can filter the mixed liquid into a clean liquid, so that the solid-liquid separation device 100 has a good filtration effect. Moreover, the solid-liquid separation device 100 does not require external power to drive it, which can significantly reduce energy consumption. The solid-liquid separation device 100 has a simple structure and low filtration cost.
[0026] Please see Figure 2 In some embodiments, the inlet pipe 20 has a first axis N1, which is used to guide the mixture into the separation chamber 101 along the extension direction of the first axis N1. The first axis N1 is set at an angle to the center line O, and the first axis N1 and the center line O form a first angle α, where α satisfies: 30°≤a≤45°.
[0027] Optionally, the inlet pipe 20 is a straight circular pipe, and the first axis N1 is the axis of the inlet pipe 20. The inlet pipe 20 can guide the mixture to flow into the separation chamber 101 along the extension direction of the first axis N1. The size of the first included angle α formed between the first axis N1 and the center line O of the separation chamber 101 will directly affect whether the mixture can form a stable spiral circulation after entering the separation chamber 101.
[0028] When the first included angle α is less than 30°, the angle between the direction in which the mixture is sprayed into the separation chamber 101 and the vertical direction is too small. This results in the initial velocity of the mixture flowing vertically after it is sprayed into the separation chamber 101 being much greater than the initial velocity of the mixture flowing around the center line O. This may cause the mixture to flow directly to the second end 12 and fail to form a stable spiral circulation in the separation chamber 101.
[0029] When the first included angle α is greater than 45°, the angle between the direction in which the mixture is sprayed into the separation chamber 101 and the vertical direction is too large. This causes the initial velocity of the mixture flowing vertically after it is sprayed into the separation chamber 101 to be much smaller than the initial velocity of the mixture flowing around the center line O. As a result, the mixture will flow along the first inner circumferential surface 102 and form a circulation around the center line O. It is also impossible to form a stable spiral circulation in the separation chamber 101.
[0030] Thus, when the first included angle α satisfies 30°≤a≤45°, the angle between the direction of the mixture being sprayed into the separation chamber 101 and the vertical direction is moderate. After the mixture is sprayed into the separation chamber 101, the initial velocity of the mixture flowing vertically and the initial velocity of the mixture flowing around the center line O are approximately equal, so that the mixture can flow along the first inner circumferential surface 102 to form a spiral circulation that flows around the center line O and towards the second end 12, thereby forming a stable spiral circulation that can separate the mixture into a first mixed liquid flow and a second mixed liquid flow.
[0031] Please see Figure 2 and Figure 4 In some embodiments, in the extension direction of the centerline O, the projection of the first axis N1 is a first straight line N1', and the projection of the first inner circumferential surface 102 is a first circular line M. The first straight line N1' and the first circular line M intersect at a first point, and the first circular line M has a first tangent M1 passing through the first point. The extension direction of the first straight line N1' is parallel to the extension direction of the first tangent M1. Alternatively, the first straight line N1' and the first tangent M1 are set at an angle, and the first straight line N1' and the first tangent M1 form a second angle b, where b satisfies: 0°. <b≤5°。
[0032] Optionally, the first inner circumferential surface 102 is a toroidal surface. In the extension direction of the center line O, the projection of the first inner circumferential surface 102 is a first circular line M, which is a circle. The projection of the first axis N1 is a first straight line N1', and the first straight line N1' intersects the first circular line M at a first point. The first circular line M has a first tangent M1 passing through the first point.
[0033] In this embodiment, the first straight line N1' coincides with the first tangent M1, such that the extension direction of the first straight line N1' is parallel to the extension direction of the first tangent M1. Thus, when the mixture flows into the separation chamber 101 along the extension direction of the first axis N1, the mixture can be sprayed into the separation chamber 101 in a direction tangential to the first inner circumferential surface 102, allowing the mixture to flow along the first inner circumferential surface 102. This allows the first inner circumferential surface 102 to guide the mixture to form a spiral circulation flowing around the centerline O and towards the second end 12.
[0034] In some embodiments, the first straight line N1' is arranged at an angle with the first tangent line M1, and the first straight line N1' and the first tangent line M1 form a second angle b. If the second angle b is greater than 5°, the angle formed by the first straight line N1' and the first tangent line M1 is too large. When the mixed liquid flows into the separation chamber 101 along the extension direction of the first axis N1, the mixed liquid will separate from the first inner peripheral surface 102, making it impossible for the mixed liquid to flow along the first inner peripheral surface 102. Without the guidance of the first inner peripheral surface 102, the mixed liquid cannot form a stable spiral circulation.
[0035] Thus, when b satisfies: 0° < b ≤ 5°, the angle formed by the first straight line N1' and the first tangent line M1 is suitable. When the mixed liquid flows into the separation chamber 101 along the extension direction of the first axis N1, the mixed liquid can flow along the first inner peripheral surface 102. Thus, the first inner peripheral surface 102 can guide the mixed liquid to form a spiral circulation that flows around the center line O and towards the second end 12.
[0036] Please refer to Figure 1 and Figure 2 In some embodiments, the liquid inlet pipe 20 includes a first pipe section 21 and a second pipe section 22. The first pipe section 21 is connected to the first end 11 and is in communication with the separation chamber 101. The second pipe section 22 is connected to the first pipe section 21. The diameter of the second pipe section 22 is larger than that of the first pipe section 21, and the diameter of the second pipe section 22 gradually decreases in the direction close to the first pipe section 21.
[0037] Optionally, both the first pipe section 21 and the second pipe section 22 are circular straight pipes. The first pipe section 21 is connected to the first end 11 and is in communication with the separation chamber 101. The second pipe section 22 is connected to the end of the first pipe section 21 far from the first end 11. The diameter of the second pipe section 22 is larger than that of the first pipe section 21, and the diameter of the second pipe section 22 gradually decreases in the direction close to the first pipe section 21.
[0038] Thus, the cross-section of the second pipe section 22 gradually narrows along the flow direction of the mixed liquid. When the mixed liquid flows into the separation chamber 101 along the liquid inlet pipe 20, according to Bernoulli's law, when the cross-section of the pipe narrows, the flow velocity of the fluid increases, making the mixed liquid have a greater initial velocity when flowing into the separation chamber 101, so as to form a more stable spiral circulation and better separate the solid particles in the mixed liquid.
[0039] In some embodiments, the liquid inlet pipe 20 further includes a third pipe section. The third pipe section is connected to the end of the second pipe section 22 far from the first pipe section 21. The diameter of the third pipe section is larger than that of the second pipe section 22, and the third pipe section can be connected to the dirty liquid tank, facilitating the connection between the liquid inlet pipe 20 and the dirty liquid tank.
[0040] Please refer to Figure 2In some embodiments, a guide plate 60 is provided on the first inner peripheral surface 102. The guide plate 60 extends spirally around the center line O and is used to guide the mixture to flow spirally around the center line O.
[0041] Optionally, a guide plate 60 is provided on the first inner circumferential surface 102. The guide plate 60 is spiral in shape and extends spirally around the center line O. When the mixture is sprayed into the separation chamber 101, the mixture can flow spirally around the center line O. The guide plate 60 can guide the mixture to flow spirally around the center line O, so that the mixture can form a more stable spiral circulation to better separate the solid particles in the mixture.
[0042] Furthermore, when the mixture forms a spiral circulation, under the centrifugal force generated by the spiral circulation, the solid particles in the mixture will gradually converge toward the first inner circumferential surface 102 of the tank 10. Thus, the guide plate 60 can also guide the second mixture flow with more solid particles to flow around the center line O, which can prevent the solid particles from accumulating together.
[0043] Please see Figure 2 In some embodiments, the end of the baffle 60 near the second end 12 extends to the connection between the waste discharge pipe 30 and the tank 10.
[0044] Optionally, the guide plate 60 extends spirally around the centerline O, and one end of the guide plate 60 near the second end 12 extends to the connection between the waste discharge pipe 30 and the tank 10. Thus, when the mixture forms a spiral circulation, the guide plate 60 can guide the second mixture flow with more solid particles to flow around the centerline O, and can guide the second mixture flow to be discharged outward from the waste discharge pipe 30, facilitating the discharge of solid particles from the tank 10.
[0045] Please see Figure 2 and Figure 5 In some embodiments, the waste discharge pipe 30 has a second axis N2, which guides the second mixed liquid flow to exit the separation chamber 101 along the extension direction of the second axis N2. In the extension direction of the center line O, the projection of the second axis N2 is a second straight line N2', and the projection of the first inner circumferential surface 102 is a first circular line M. The second straight line N2' intersects the first circular line M at a second point. The first circular line M has a second tangent M2 passing through the second point. The extension direction of the second straight line N2' is parallel to the extension direction of the second tangent M2. Alternatively, the second straight line N2' and the second tangent M2 are set at an angle, and the second straight line N2' and the second tangent M2 form a third angle c, where c satisfies: 0°. <c≤5°。
[0046] In this embodiment, the second straight line N2' coincides with the second tangent line M2, such that the extending direction of the second straight line N2' is parallel to the extending direction of the second tangent line M2. Thus, when the second mixed liquid flow flows around the central axis O along the first inner peripheral surface 102, the second mixed liquid flow can flow into the waste discharge pipe 30 along the direction tangent to the first inner peripheral surface 102, so that the second mixed liquid flow can smoothly flow outwards along the waste discharge pipe 30.
[0047] In some embodiments, the second straight line N2' and the second tangent line M2 are arranged at an angle, and the second straight line N2' and the second tangent line M2 form a third angle c. If the second angle b is greater than 5°, the angle formed by the second straight line N2' and the second tangent line M2 is too large. When the second mixed liquid flow flows around the central axis O along the first inner peripheral surface 102, the flowing direction of the second mixed liquid flow is approximately tangent to the first inner peripheral surface 102. The flowing direction of the second mixed liquid flow needs to turn at a large angle before it can flow into the waste discharge pipe 30, resulting in the process of the second mixed liquid flow flowing outwards from the waste discharge pipe 30 not being smooth.
[0048] Thus, when c satisfies: 0° < c ≤ 5°, the angle formed by the second straight line N2' and the second tangent line M2 is appropriate. When the second mixed liquid flow flows along the direction tangent to the first inner peripheral surface 102, the second mixed liquid flow only needs to slightly adjust its flowing direction and then can flow into the waste discharge pipe 30, so that the second mixed liquid flow can smoothly flow outwards along the waste discharge pipe 30.
[0049] Please refer to Figure 2 , in some embodiments, the liquid inlet pipe 20 is connected to the first position of the tank body 10, and the waste discharge pipe 30 is connected to the second position of the tank body 10. Among them, the filtering part 40 is located between the first position and the second position, and along the extending direction of the central axis O, the distance between the filtering part 40 and the first position is greater than the distance between the filtering part 40 and the second position.
[0050] Optionally, the liquid inlet pipe 20 is connected to the top of the tank body 10, and the liquid inlet pipe 20 is connected to the first position of the tank body 10. The waste discharge pipe 30 is connected to the bottom of the tank body 10, and the waste discharge pipe 30 is connected to the second position of the tank body 10. The filtering part 40 is located between the first position and the second position, and along the extending direction of the central axis O, the distance between the filtering part 40 and the first position is greater than the distance between the filtering part 40 and the second position.
[0051] Thus, a sufficient distance is reserved between the filtering part 40 and the liquid inlet pipe 20. When the mixed liquid flows into the separation chamber 101, the mixed liquid can form a spiral circulation flow along the first inner peripheral surface 102, and before flowing to the filtering part 40, the spiral circulation flow can separate the mixed liquid into a first mixed liquid flow and a second mixed liquid flow, thereby providing a sufficient flowing stroke for the spiral circulation flow to achieve separation and ensuring the separation effect.
[0052] Furthermore, a certain distance is maintained between the filter section 40 and the second position along the extension direction of the center line O, so that the solid particles separated from the mixture can gather below the filter section 40, preventing solid particles from clogging the outer surface of the filter section 40 and ensuring that the filter section 40 has a good filtration effect.
[0053] In some embodiments, the solid-liquid separation device 100 further includes a flow sensor and a regulating valve. The flow sensor is disposed in the outlet pipe 50 and is used to monitor the flow rate of the clean liquid. The regulating valve is disposed in the outlet pipe 50 and is electrically connected to the flow sensor.
[0054] It should be noted that during the process of the mixed liquid being pumped into the separation chamber 101 through the inlet pipe 20, the water pressure output by the pump is prone to fluctuation, leading to unstable net liquid flow rate. Therefore, a flow sensor monitors the net liquid flow rate in real time: when the flow sensor detects that the net liquid flow rate is too low, the regulating valve can be opened more, thereby increasing the net liquid flow rate; when the flow sensor detects that the net liquid flow rate is too high, the regulating valve can be opened less, thereby decreasing the net liquid flow rate. This forms a closed-loop regulation, ensuring that the net liquid flow rate remains stable.
[0055] Please see Figure 2 In some embodiments, the liquid outlet pipe 50 is detachably connected to the filter section 40.
[0056] Optionally, the first end of the outlet pipe 50 extends into the separation chamber 101, and the first end of the outlet pipe 50 has a screw hole structure. The filter part 40 has a threaded hole, the first end of the outlet pipe 50 is inserted into the threaded hole, and the first end of the outlet pipe 50 is threadedly engaged with the filter part 40. When it is necessary to clean the filter part 40, the filter part 40 can be directly removed from the outlet pipe 50, and the filter part 40 can be easily cleaned or replaced.
[0057] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A solid-liquid separation device, characterized in that, include: The tank body has a separation cavity and a first inner circumferential surface that surrounds the separation cavity, and the tank body also has a first end and a second end arranged along the extension direction of the center line of the separation cavity; An inlet pipe is connected to the first end and is inclined from the first end toward the direction away from the second end. The inlet pipe is connected to the separation chamber and is used to guide the mixture into the separation chamber and flow along the first inner circumferential surface to form a spiral circulation that flows around the center line and toward the second end, and to separate the mixture into a first mixed flow near the center line and a second mixed flow near the first inner circumferential surface. The solid-liquid ratio of the first mixed flow is smaller than that of the second mixed flow. Waste discharge pipe, which is connected to the second end and communicates with the separation chamber, is used to guide the second mixed liquid in the separation chamber to flow outward; A filter section is disposed within the separation chamber, and the filter section is located in the central region of the separation chamber. The filter section is used to filter the first mixed liquid flow to form a clean liquid flow. The liquid outlet pipe is connected to the filter section and is used to guide the purified liquid to flow out of the separation chamber.
2. The solid-liquid separation device according to claim 1, characterized in that, The inlet pipe has a first axis, and the inlet pipe is used to guide the mixture into the separation chamber along the extension direction of the first axis; Wherein, the first axis is set at an angle to the center line, and the first axis and the center line form a first angle α, where α satisfies: 30°≤a≤45°.
3. The solid-liquid separation device according to claim 2, characterized in that, In the direction of extension of the center line, the projection of the first axis is a first straight line, the projection of the first inner circumferential surface is a first circular line, the first straight line and the first circular line intersect at a first point, and the first circular line has a first tangent passing through the first point. Wherein, the extension direction of the first straight line is parallel to the extension direction of the first tangent; or, The first straight line forms an angle with the first tangent, and the first straight line and the first tangent form a second angle b, where b satisfies: 0° <b≤5°。 4. The solid-liquid separation device according to claim 1, characterized in that, The inlet pipe includes: The first pipe segment is connected to the first end and communicates with the separation cavity; The second pipe segment is connected to the first pipe segment. The diameter of the second pipe segment is larger than that of the first pipe segment, and the diameter of the second pipe segment gradually decreases along the direction closer to the first pipe segment.
5. The solid-liquid separation device according to claim 1, characterized in that, A guide plate is provided on the first inner circumferential surface. The guide plate extends spirally around the center line and is used to guide the mixture to flow spirally around the center line.
6. The solid-liquid separation device according to claim 5, characterized in that, The end of the guide plate near the second end extends to the connection between the waste discharge pipe and the tank.
7. The solid-liquid separation device according to claim 1, characterized in that, The waste discharge pipe has a second axis, which is used to guide the second mixed liquid flow to be discharged from the separation chamber along the extension direction of the second axis; Wherein, in the extension direction of the center line, the projection of the second axis is a second straight line, the projection of the first inner circumferential surface is a first circular line, the second straight line intersects the first circular line at a second point, and the first circular line has a second tangent passing through the second point; The extension direction of the second straight line is parallel to the extension direction of the second tangent; or, The second straight line is set at an angle to the second tangent, and the second straight line and the second tangent form a third angle c, where c satisfies: 0° <c≤5°。 8. The solid-liquid separation device according to claim 1, characterized in that, The liquid inlet pipe is connected to a first position of the tank body, and the waste outlet pipe is connected to a second position of the tank body; The filter section is located between the first position and the second position, and along the extension direction of the center line, the distance between the filter section and the first position is greater than the distance between the filter section and the second position.
9. The solid-liquid separation device according to claim 1, characterized in that, The solid-liquid separation device further includes: A flow sensor is disposed inside the outlet pipe and is used to monitor the flow rate of the purified liquid. A regulating valve is disposed on the outlet pipe and is electrically connected to the flow sensor.
10. The solid-liquid separation device according to claim 1, characterized in that, The liquid outlet pipe is detachably connected to the filter section.