Self-cleaning type solid-liquid separator

Abstract

The utility model discloses a self-cleaning type solid-liquid separator which comprises a mounting frame, a filtering device and a screening device, and an electric control device is arranged on the mounting frame; the filtering device comprises a filtering container and a filtering net, the filtering container is provided with a feeding port and a solid outlet, the filtering net is installed in the filtering container and located below the feeding port, the solid outlet is formed in the side wall of the filtering container, and at least part of the solid outlet is located above the filtering net; the screening device comprises a water pump, a driving mechanism and a flushing nozzle, the water pump is mounted on the mounting frame, the water outlet end of the water pump is communicated with the flushing nozzle, the driving mechanism is mounted on the mounting frame and electrically connected with the electric control device, and the flushing nozzle is mounted on the driving mechanism so as to be driven by the driving mechanism to move in the horizontal direction; and the flushing nozzles are located above the filter screen at intervals and face the filter screen. According to the technical scheme, the automatic solid-liquid separation efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-liquid separation, in particular to a self-cleaning solid-liquid separator. Background Art

[0002] A solid-liquid separator is a device that separates solids and liquids in a solid-liquid mixture. A filter is usually used to allow the liquid to pass through the filter, while the solids are blocked above the filter. However, after a period of use, solids usually clog the filter, resulting in reduced filtration efficiency. At this time, the filter usually needs to be cleaned manually, which has high labor costs, troublesome operations, and low efficiency. Utility Model Content

[0003] The main purpose of the utility model is to provide a self-cleaning solid-liquid separator, aiming to improve the efficiency of automated solid-liquid separation.

[0004] To achieve the above-mentioned purpose, the self-cleaning solid-liquid separator proposed in the present invention comprises:

[0005] a mounting frame, wherein an electric control device is provided on the mounting frame;

[0006] A filtration device comprising a filtration container and a filter screen, wherein the filtration container is provided with a feed inlet and a solids outlet, the filter screen is installed in the filtration container and is located below the feed inlet, and the solids outlet is provided on a side wall of the filtration container and is at least partially located above the filter screen; and

[0007] The screening device includes a water pump, a driving mechanism and a flushing nozzle. The water pump is installed on the mounting frame, and the water outlet of the water pump is connected to the flushing nozzle. The driving mechanism is installed on the mounting frame and electrically connected to the electronic control device. The flushing nozzle is installed on the driving mechanism so that the flushing nozzle is driven to move in the horizontal direction by the driving mechanism. The flushing nozzle is located above the filter mesh and is arranged toward the filter mesh.

[0008] Optionally, the driving mechanism has an actuator, the actuator is slidably mounted on the mounting frame, and the flushing nozzle is mounted on the actuator.

[0009] Optionally, the flushing nozzle is detachably mounted on the actuator.

[0010] Optionally, a bayonet is provided at one end of the actuator away from the driving motor, and the flushing nozzle is snapped into the bayonet.

[0011] Optionally, the driving mechanism includes a driving motor and a crank-throttle mechanism, the driving motor is mounted on the mounting frame, the crank end of the crank-throttle mechanism is mounted on the rotating shaft of the driving motor, and the remote rod end of the crank-throttle mechanism is hinged to the actuator.

[0012] Optionally, the self-cleaning solid-liquid separator also includes a protective cover, which covers the drive motor and the crank remote control mechanism; and / or, a guide plate is provided on the mounting frame, and the guide plate is installed at intervals above the actuator, and the guide plate is provided with a guide groove, which extends along the movement direction of the actuator and passes through the end of the guide plate away from the drive motor, and the flushing nozzle is slidably installed in the guide groove.

[0013] Optionally, the filter screen is arranged between the feed port and the bottom wall of the filter container to separate the inner cavity of the filter container into a filter cavity and a drainage cavity, the filter cavity is located above the filter screen, the drainage cavity is located below the filter screen, and the cavity wall of the drainage cavity is provided with a liquid outlet; the screening device also includes a liquid storage container, which is connected to the liquid outlet to collect the liquid discharged from the liquid outlet, and the pumping end of the water pump is connected to the liquid storage container.

[0014] Optionally, a drainage channel is provided on the outside of the filter container, one end of the drainage channel is connected to the liquid outlet, and the other end is provided with an open port, and the flushing nozzle is detachably mounted on the driving mechanism, and the radial size of the flushing nozzle is smaller than the size of the drainage channel so that it can extend into the drainage cavity through the drainage channel to flush the filter screen.

[0015] Optionally, a discharge channel is provided on the outside of the filter container, and the discharge channel is connected to the solid outlet. The self-cleaning solid-liquid separator also includes a recovery device, and the recovery device includes a recovery container and a filter element. The recovery container is installed on the mounting frame. The recovery container is provided with a collection inlet and a drainage channel. The end of the discharge channel away from the solid outlet is connected to the inner cavity of the recovery container through the collection inlet; the filter element is provided in the recovery container and is located between the drainage channel and the discharge channel. The filter element is provided with a plurality of filter mesh holes.

[0016] Optionally, the drainage channel is provided with a flow sensor, which is used to detect the liquid flow flowing out of the drainage channel after flowing out from the solid outlet to the recovery container, and the electronic control device is configured to start the water pump when the flow sensor detects that the liquid flow reaches a preset value.

[0017] Optionally, the screening device further includes the vibration motor and a vibration mechanism connected to the vibration motor, the vibration motor is mounted on the mounting frame and electrically connected to the electronic control device, and the filter container is mounted on the vibration mechanism.

[0018] The technical solution of the utility model can increase the flushing range of the flushing nozzle on the filter screen by setting a driving mechanism to drive the flushing nozzle to move horizontally above the filter screen, better flush the solid matter on the filter screen to the surroundings and the solid outlet, reduce the blockage of the filter screen by solid matter, improve the automatic flushing effect of the solid matter on the filter screen, reduce the need for manual flushing, and thus improve the efficiency of automated solid-liquid separation. 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of an embodiment of the self-cleaning solid-liquid separator of the utility model;

[0021] Figure 2 for Figure 1 Cross-sectional view at point A;

[0022] Figure 3 for Figure 2 Schematic diagram of the structure of the middle drive mechanism and guide plate;

[0023] Figure 4 for Figure 1 Schematic diagram of the structure of the filter device;

[0024] Figure 5 for Figure 4 Top view of the filter unit;

[0025] Figure 6 for Figure 5 Cross-sectional view at XX in the middle;

[0026] Figure 7 for Figure 1 Cross-sectional view of the recovery device.

[0027] Description of Figure Numbers:

[0028] 10. Mounting frame; 11. Base; 12. Support frame; 30. Filter device; 31. Filter container; 311. Filter chamber; 312. Drain chamber; 313. Discharge channel; 314. Solid outlet; 315. Feed port; 316. Liquid outlet; 32. Filter screen; 33. Drain channel; 331. Opening; 41. Driving mechanism; 411. Actuator; 412. Bayonet; 413. Driving motor; 414. Crank remote control mechanism; 43. Flushing nozzle; 44. Liquid storage container; 45. Vibrating mechanism; 451. Mounting seat; 452. Spring; 453. Eccentric mechanism; 50. Recovery device; 51. Recovery container; 511. Collection inlet; 512. Drain channel; 52. Filter element; 521. Receiving chamber; 522. Opening; 60. Protective cover; 70. Guide plate; 71. Guide groove; 80. Flow sensor.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The utility model provides a self-cleaning solid-liquid separator.

[0034] In the embodiment of the present utility model, Figures 1 to 7 As shown, the self-cleaning solid-liquid separator includes a mounting frame 10, a filtering device 30 and a screening device, and an electronic control device is provided on the mounting frame 10; the filtering device 30 includes a filtering container 31 and a filter screen 32, the filtering container 31 is provided with a feed port 315 and a solid outlet 314, the filter screen 32 is installed in the filtering container 31 and is located below the feed port 315, the solid outlet 314 is provided on the side wall of the filtering container 31, and is at least partially located above the filter screen 32, the screening device includes a water pump, a driving mechanism 41 and a flushing nozzle 43, the water pump is installed on the mounting frame 10, the water outlet end of the water pump is connected to the flushing nozzle 43, the driving mechanism 41 is installed on the mounting frame 10, and is electrically connected to the electronic control device, the flushing nozzle 43 is installed on the driving mechanism 41 to drive the flushing nozzle 43 to move in the horizontal direction through the driving mechanism 41, and the flushing nozzle 43 is located above the filter screen 32 at intervals and is arranged toward the filter screen 32.

[0035] This self-cleaning solid-liquid separator can be used to filter solids (such as plastic particles) in water bodies (such as seawater and lake water), can also be used for sewage treatment, and can also be used for slurry separation in the tofu / soy milk production process (it needs to be made of food-grade materials).

[0036] Optionally, the mounting frame 10 includes a base 11 and a support frame 12 provided on the base 11 , the filtering device 30 is provided above the base 11 , the mounting frame 10 is located on one side of the filtering device 30 , and the driving mechanism 41 is installed on the support frame 12 .

[0037] After filtering for a period of time, as the solid matter on the filter screen 32 increases, the filter screen 32 will be blocked, resulting in low filtration efficiency of the filter screen 32. At this time, the drive mechanism 41 can be controlled by the electronic control device to work, thereby driving the flushing nozzle 43 to move in the horizontal direction, and the water flow sprayed by the flushing nozzle 43 is used to flush the filter screen 32, and the solid matter on the filter screen 32 is flushed to the surrounding area and the solid outlet 314. Among them, the water pump and the drive mechanism 41 can be controlled to start at a fixed time by the electronic control device. Among them, when the self-cleaning solid-liquid separator is used for water filtering, when screening is carried out, the water pump used to pump seawater / lake water to the filter container 31 can be turned off, and then turned on again after the screening is completed. When the self-cleaning solid-liquid separator is used in the soy product production process, when screening is carried out, the soy milk delivery pipeline can be controlled to be closed to prevent the soy milk delivery channel from delivering soy milk to the filter container 31, and then turned on again after the screening is completed.

[0038] The technical solution of the present invention is to set a driving mechanism 41 to drive the flushing nozzle 43 to move horizontally above the filter screen 32, thereby increasing the flushing range of the flushing nozzle 43 on the filter screen 32, and better flushing the solid matter on the filter screen 32 to the surrounding area and the solid outlet 314, reducing the blockage of the filter screen 32 by solid matter, improving the automatic flushing effect of the solid matter on the filter screen 32, reducing the need for manual flushing, and thus improving the efficiency of automated solid-liquid separation.

[0039] In some embodiments, the drive mechanism 41 includes an actuator 411, which is slidably mounted on the mounting frame 10. The flushing nozzle 43 is mounted on the actuator 411. In other words, the drive mechanism 41 drives the flushing nozzle 43 to reciprocate through the linear reciprocating motion of the actuator 411. This simple structure helps ensure structural reliability. Optionally, the flushing nozzle 43 uses a fan-shaped nozzle to expand the flushing range.

[0040] In some embodiments, the flushing nozzle 43 is detachably mounted on the actuator 411. This makes it easier for a worker to disassemble the flushing nozzle 43 and manually flush the filter 32 or other components.

[0041] In some embodiments, a bayonet 412 is provided at one end of the actuator 411 away from the driving motor 413 , and the flushing nozzle 43 is snapped into the bayonet 412 , so that the flushing nozzle 43 can be easily disassembled.

[0042] In some embodiments, the drive mechanism 41 includes a drive motor 413 and a crank-teleoperation mechanism 414. The drive motor 413 is mounted on the mounting frame 10. The crank end of the crank-teleoperation mechanism 414 is mounted on the rotating shaft of the drive motor 413, and the remote end of the crank-teleoperation mechanism 414 is hinged to the actuator 411. This simple and reliable structure reduces costs while extending service life. Of course, in other embodiments, the flushing nozzle 43 can also be driven by a gear train to rotate along the circumference of the filter screen 32.

[0043] In some embodiments, the self-cleaning solid-liquid separator further includes a protective cover 60, which covers the drive motor 413 and the crank-throttle mechanism 414. This can protect the drive motor 413 and the crank-throttle mechanism 414 and reduce the risk of damage to the drive motor 413 and the crank-throttle mechanism 414.

[0044] In some embodiments, the mounting frame 10 is provided with a guide plate 70, which is installed at intervals above the actuator 411. The guide plate 70 is provided with a guide slot 71, which extends along the direction of movement of the actuator 411 and passes through the end of the guide plate 70 away from the drive motor 413. The flushing nozzle 43 is slidably mounted in the guide slot 71. This arrangement not only facilitates the removal of the flushing nozzle 43, but also provides guidance and positioning for the flushing nozzle 43, ensuring stable movement of the flushing nozzle 43.

[0045] In some embodiments, the filter screen 32 is spaced between the feed port 315 and the bottom wall of the filter container 31 to separate the inner cavity of the filter container 31 into a filter cavity 311 and a drainage cavity 312. The filter cavity 311 is located above the filter screen 32, and the drainage cavity 312 is located below the filter screen 32. The cavity wall of the drainage cavity 312 is provided with a liquid outlet 316; the screening device also includes a liquid storage container 44, which is connected to the liquid outlet 316 to collect water discharged from the liquid outlet 316, and the pumping end of the water pump is connected to the liquid storage container 44.

[0046] Specifically, during filtration, the liquid discharged from the drainage chamber 312 and the liquid outlet 316 flows into the liquid storage container 44. When used for water filtration, when the liquid storage container 44 is full, the water in the liquid storage container 44 overflows into the seawater / lake water. When used for slurry separation, the slurry in the liquid storage container 44 can overflow and flow into the slurry collection container. This ensures that the liquid storage container 44 always contains liquid filtered by the filter device 30. Using the filtered liquid to flush the filter screen 32 to achieve filtration, there is no need to set up a separate flushing water source, which can save water resources and avoid the introduction of new solids during the filtration process, thereby improving the filtration effect. It can also better achieve the automatic drainage of the self-cleaning solid-liquid separator through the filter screen 32, which can reduce manual maintenance, facilitate the automatic cleaning of solids on the filter screen 32, and improve the filtration efficiency of the self-cleaning solid-liquid separator. Of course, in other embodiments, when used for water filtration, the pump end of the water pump is placed in the water to be filtered (seawater / lake water).

[0047] In some embodiments, the self-cleaning solid-liquid separator further includes a recovery device 50 mounted on the mounting frame 10 and connected to the solids outlet 314 for collecting solids discharged from the solids outlet 314. This automatically collects solids discharged from the solids outlet 314, reducing manual maintenance and improving automatic collection efficiency. Of course, in other embodiments, a valve may be provided at the solids outlet 314 to allow for manual collection of solids.

[0048] In some embodiments, a drainage channel 33 is provided on the outside of the filter container 31. One end of the drainage channel 33 is connected to the liquid outlet 316, and the other end is provided with an open port 331. A flushing nozzle 43 is detachably mounted on the drive mechanism 41. The radial dimension of the flushing nozzle 43 is smaller than that of the drainage channel 33, so that the flushing nozzle 43 can extend through the drainage channel 33 into the drainage cavity 312 to flush the filter 32. Specifically, if the filter 32 is severely clogged and manual filtration is required, the flushing nozzle 43 can be removed from the drive mechanism 41 and extended from the drainage channel 33 into the drainage cavity 312 to flush the filter 32 from below. This improves the flushing effect on the filter 32 and effectively prevents solid matter from becoming lodged in the mesh of the filter 32.

[0049] In some embodiments, a discharge channel 313 is provided on the outside of the filter container 31, and the discharge channel 313 is connected to the solid outlet 314. The recovery device 50 includes a recovery container 51 and a filter element 52. The recovery container 51 is installed on the mounting frame 10. The recovery container 51 is provided with a collection inlet 511 and a drainage channel 512. The end of the discharge channel 313 away from the solid outlet 314 is connected to the inner cavity of the recovery container 51 through the collection inlet 511; the filter element 52 is provided in the recovery container 51 and is located between the drainage channel 512 and the discharge channel 313. The filter element 52 is provided with a plurality of filter mesh holes.

[0050] By providing a drainage channel 512 at the bottom of the recovery container 51, when water or rainwater in the filter chamber 311 flows into the recovery container 51 through the collection inlet 511, the water in the recovery container 51 can flow out through the drainage channel 512, thereby preventing water accumulation in the recovery container 51. The provision of the filter element 52 can also prevent solid matter from being discharged through the drainage channel 512. Of course, in other embodiments, the recovery container 51 may not be provided with a drainage channel 512. For example, when the amount of solid matter or water in the recovery container 51 reaches a certain level, the solid matter in the recovery container 51 can be manually collected.

[0051] When the recovery container 51 is connected to the discharge channel 313 through the collection inlet 511, the discharge end of the discharge channel 313 can be extended into the recovery container 51; alternatively, the discharge end of the discharge channel 313 can be spaced apart and placed above the feed inlet 315, so that solid matter discharged from the discharge channel 313 falls into the recovery container 51 through the collection inlet 511. In some embodiments, the collection inlet 511 is open.

[0052] The specific structure of the filter element 52 can vary. For example, in some embodiments, the filter element 52 comprises a receiving cavity 521 and an opening 522 communicating with the receiving cavity 521. The walls of the receiving cavity 521 are provided with a plurality of filter mesh holes. The receiving cavity 521 communicates with the discharge end of the discharge channel 313 through the opening 522, thereby collecting solid matter discharged from the discharge channel 313. Specifically, the filter element 52 can be barrel-shaped or bag-shaped, with the filter mesh holes extending through the walls of the receiving cavity 521 and the outer surface of the filter element 52. This is equivalent to collecting solid matter through the filter element 52. Compared to cleaning the entire recovery container 51, this method allows the filter element 52 to be cleaned while collecting solid matter. Furthermore, the filter element 52 can also be equipped with a disposable filter bag, further facilitating solid matter collection. In actual use, the recovery container 51 can also effectively protect the filter element 52, reducing the risk of damage to the filter element 52 by wind and waves. Furthermore, when the filter element 52 is fully covered with filter mesh holes, the filter area of the filter element 52 can be increased, preventing the filter mesh holes of the filter element 52 from being completely clogged with solid matter. This allows for better collection of solid matter while effectively draining water. In this embodiment, when the receiving chamber 521 is connected to the discharge end of the discharge channel 313 via the opening 522, the discharge end of the discharge channel 313 can be extended into the receiving chamber 521; alternatively, the discharge end of the discharge channel 313 can be positioned above the opening 522 at intervals, allowing solid matter discharged from the discharge channel 313 to fall into the receiving chamber 521 through the opening 522.

[0053] In other embodiments, the filter element 52 is in a plate shape and is located between the collection inlet 511 and the drainage channel 512 , which can simplify the structure of the filter element 52 .

[0054] In other embodiments, the filter element 52 is in a cover shape and is disposed to cover the drainage channel 512 .

[0055] In some embodiments, the filter element 52 is detachably mounted in the recovery container 51. This avoids cleaning or replacing the filter element 52.

[0056] In some embodiments, the drainage channel 512 is provided with a flow sensor 80, which is used to detect the liquid flow rate flowing out of the drainage channel 512 after flowing out from the solid outlet 314 to the recovery container 51. The electronic control device is configured to start the water pump when the flow sensor 80 detects that the liquid flow rate reaches a preset value.

[0057] Specifically, when the filter 32 is blocked by solid matter, the liquid will flow to the solid outlet 314 and then to the drainage channel 512 of the recovery container 51. A flow sensor 80 is provided in the drainage channel 512. When the flow sensor 80 detects that the liquid flow reaches a preset value, it can be determined that the filter 32 is blocked. At this time, the flow sensor 80 sends an electrical signal to the electronic control device. After receiving the electrical signal sent by the flow sensor 80, the electronic control device controls the water pump to flush the filter 32 through the flushing nozzle 43, flushing the solid matter on the filter 32 to the surrounding area and the solid outlet 314, thereby reducing the blockage of the filter 32 by solid matter. In this way, when the filter 32 is blocked, it can be discovered in time, and the water pump can be automatically started for cleaning, which is conducive to improving the filtration efficiency.

[0058] In some embodiments, the bottom wall of the recovery container 51 gradually tilts downward in the direction close to the drainage channel 512 so that the drainage channel 512 is at the lowest position of the recovery container 51. This can avoid liquid accumulation in the recovery container 51 and allow the liquid to flow to the drainage channel faster, thereby allowing the flow sensor 80 to detect liquid overflowing from the solid outlet 314 in a timely manner.

[0059] In some embodiments, the sieving device further comprises a vibration motor and a vibration mechanism 45 connected to the vibration motor, the vibration motor being mounted on the mounting frame 10 and electrically connected to the electronic control device, and the vibration mechanism 45 being mounted on the bottom of the filter container 31. In this way, the vibration mechanism 45 can be driven to vibrate by the vibration motor, thereby driving the filter container 31 and the filter screen 32 in the filter container 31 to vibrate. In this way, in the process of driving the filter screen 32 to vibrate, the solid matter on the filter screen 32 can be shaken, thereby preventing the solid matter from blocking the mesh of the filter screen 32, and also enabling at least part of the solid matter to move to the solid outlet 314, thereby achieving sieving. Among them, the vibration motor can be always turned on during the filtration process (i.e., the vibration motor is started at the beginning of the filtration operation, which can reduce the possibility of the filter screen 32 being blocked and improve the filtration efficiency), or the vibration motor can be set to start at a fixed time, and the electronic control device can also be set to start the vibration motor when the flow sensor 80 detects that the liquid flow rate reaches a preset value.

[0060] Optionally, the vibration mechanism 45 includes a mounting seat 451, an eccentric mechanism 453, and a plurality of springs 452. The mounting seat 451 is mounted on the base 11 (mounting frame 10). The plurality of springs 452 are connected between the filter container 31 and the mounting seat 451 to support the filter container 31 above the mounting seat 451. The eccentric mechanism 453 is mounted on the bottom of the filter container 31 and is connected to the drive motor 413. When the drive motor 413 drives the eccentric block of the eccentric mechanism 453 to move, the filter container 31 is driven to vibrate.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A self-cleaning solid-liquid separator, characterized in that: include: a mounting frame, wherein an electric control device is provided on the mounting frame; A filtration device comprising a filtration container and a filter screen, wherein the filtration container is provided with a feed inlet and a solids outlet, the filter screen is installed in the filtration container and is located below the feed inlet, and the solids outlet is provided on a side wall of the filtration container and is at least partially located above the filter screen; as well as The screening device includes a water pump, a driving mechanism and a flushing nozzle. The water pump is installed on the mounting frame, and the water outlet of the water pump is connected to the flushing nozzle. The driving mechanism is installed on the mounting frame and electrically connected to the electronic control device. The flushing nozzle is installed on the driving mechanism so that the flushing nozzle is driven to move in the horizontal direction by the driving mechanism. The flushing nozzle is located above the filter mesh and is arranged toward the filter mesh.

2. The self-cleaning solid-liquid separator according to claim 1, characterized in that: The driving mechanism includes an actuator, the actuator is slidably mounted on the mounting frame, and the flushing nozzle is mounted on the actuator.

3. The self-cleaning solid-liquid separator according to claim 2, characterized in that: The flushing nozzle is detachably mounted on the actuator.

4. The self-cleaning solid-liquid separator according to claim 3, characterized in that: A bayonet is provided at one end of the actuator away from the driving motor, and the flushing nozzle is clamped in the bayonet.

5. The self-cleaning solid-liquid separator according to claim 2, characterized in that: The driving mechanism includes a driving motor and a crank-throttle mechanism. The driving motor is mounted on the mounting frame. The crank end of the crank-throttle mechanism is mounted on the rotating shaft of the driving motor. The remote rod end of the crank-throttle mechanism is hinged to the actuator.

6. The self-cleaning solid-liquid separator according to claim 5, characterized in that: The self-cleaning solid-liquid separator also includes a protective cover, which covers the drive motor and the crank remote control mechanism; and / or, a guide plate is provided on the mounting frame, and the guide plate is installed at intervals above the actuator, and the guide plate is provided with a guide groove, which extends along the movement direction of the actuator and passes through the end of the guide plate away from the drive motor, and the flushing nozzle is slidably installed in the guide groove.

7. The self-cleaning solid-liquid separator according to claim 1, characterized in that: The filter screen is arranged between the feed port and the bottom wall of the filter container to separate the inner cavity of the filter container into a filter cavity and a drainage cavity. The filter cavity is located above the filter screen, and the drainage cavity is located below the filter screen. The cavity wall of the drainage cavity is provided with a liquid outlet; the screening device also includes a liquid storage container, which is connected to the liquid outlet to collect the liquid discharged from the liquid outlet, and the pumping end of the water pump is connected to the liquid storage container.

8. The self-cleaning solid-liquid separator according to claim 7, characterized in that: A drainage channel is provided on the outside of the filter container, one end of the drainage channel is connected to the liquid outlet, and the other end is provided with an open port. The flushing nozzle is detachably mounted on the driving mechanism, and the radial size of the flushing nozzle is smaller than the size of the drainage channel so that it can extend into the drainage cavity through the drainage channel to flush the filter screen.

9. The self-cleaning solid-liquid separator according to claim 1, characterized in that: A discharge channel is provided on the outside of the filter container, and the discharge channel is communicated with the solid outlet. The self-cleaning solid-liquid separator also includes a recovery device, and the recovery device includes a recovery container and a filter element. The recovery container is mounted on the mounting frame, and the recovery container is provided with a collection inlet and a drainage channel. An end of the discharge channel away from the solid outlet is communicated with the inner cavity of the recovery container through the collection inlet. The filter element is provided in the recovery container and is located between the drainage channel and the discharge channel. The filter element is provided with a plurality of filter meshes. The drainage channel is provided with a flow sensor, which is used to detect the liquid flow flowing out of the drainage channel after flowing out from the solid outlet to the recovery container. The electronic control device is configured to start the water pump when the flow sensor detects that the liquid flow reaches a preset value.

10. The self-cleaning solid-liquid separator according to claim 1, characterized in that: The screening device further comprises a vibration motor and a vibration mechanism connected to the vibration motor. The vibration motor is mounted on the mounting frame and electrically connected to the electric control device. The filtering container is mounted on the vibration mechanism.

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