Geothermal tail water recharging and filtering device

Abstract

The utility model discloses a geothermal tail water recharging and filtering device, which relates to the technical field of filtering devices and is characterized in that a water return pipe can guide filtered water in a filter cartridge into the upper part of the filter cartridge under the action of a delivery pump and filter the filtered water again; the filter driving module is in transmission connection with a rotating module located in the filter cartridge, the rotating module is provided with an upper drain outlet and a plurality of filter screens which have different pore diameters and are located on the same plane, a partition plate is fixed to the position, corresponding to the lower end of the rotating module, in the filter cartridge, and a water outlet and a lower drain outlet are formed in the partition plate; the rotating module rotates to enable the water outlet to be aligned with different filter screens and enable the lower sewage draining exit to be aligned with the upper sewage draining exit, and the lower sewage draining exit is connected with a sewage draining valve on the outer wall of the filter cartridge through a material guiding channel; the stirring driving module can drive the stirring module in the filter cartridge to rotate, and the cleaning element of the stirring module can clean the inner wall of the filter cartridge and the upper end face of the rotating module. The water purifier is small in occupied volume, and can realize automatic cleaning and pollution discharge of the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a geothermal tail water reinjection filtering device. Background Art

[0002] Geothermal reinjection is a powerful measure to achieve sustainable development of geothermal resources and has been widely used in countries around the world. It is of great significance for protecting geothermal resources, reducing resource waste, extending the life of production wells and reducing environmental pollution.

[0003] Existing geothermal tail water filtration devices generally use multiple groups of filter screens with different apertures to filter geothermal tail water step by step. The filter screens are arranged in sequence from top to bottom, so the size of the device is generally large. A drain valve must be set at each filter screen. After a period of use, each drain valve needs to be drained separately. It cannot automatically drain after the tail water filtration is completed, which is inconvenient to use. Utility Model Content

[0004] The utility model aims to provide a geothermal tail water reinjection filtering device to solve the problems existing in the above-mentioned prior art, with a small overall occupied volume and capable of realizing automatic cleaning and sewage discharge of the filter screen.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a geothermal tail water reinjection filter device, comprising a filter cartridge, a return pipe, a filter drive module, a rotating module, a stirring drive module and a stirring module, wherein a feed pump is installed at the lower end of the filter cartridge, the lower end of the return pipe is installed at the lower end of the filter cartridge, and the upper end of the return pipe is installed at the upper end of the filter cartridge, and the return pipe can, under the action of the feed pump, guide the filtered water in the filter cartridge to the upper part of the filter cartridge and filter it again; the filter drive module is installed on the outer wall of the filter cartridge and is transmission-connected to the rotating module, the rotating module is located inside the filter cartridge, and an upper sewage outlet and a plurality of different apertures and positions are provided on the rotating module The filter screens are on the same plane, and a partition is fixed at a position in the filter cartridge corresponding to the lower end of the rotating module. A drain port and a lower sewage port are provided on the partition. As the rotating module rotates, the drain port can be aligned with different filter screens, and the lower sewage port can be aligned with the upper sewage port. The lower end of the lower sewage port is connected to the sewage valve on the outer wall of the filter cartridge through a material guide channel; the stirring drive module is installed at the upper end of the filter cartridge and can drive the stirring module to rotate. The stirring module is located inside the filter cartridge, and a cleaning element is provided on the stirring module, and the cleaning element can clean the inner wall of the filter cartridge and the upper end surface of the rotating module.

[0007] Preferably, the rotating module is a toothed disc, and eight circumferentially evenly arranged through grooves are provided on the toothed disc. There are three filter screens, and the three filter screens are respectively installed in different through grooves, and the three filter screens include a first filter screen, a second filter screen and a third filter screen which are arranged in sequence in a clockwise direction and have successively decreasing apertures. Sealing plates are installed in the other through grooves which are located on the same straight line as the filter screens and are symmetrical about the center of the toothed disc, and the sealing plate is also installed in the through groove adjacent to the third filter screen and located on the side of the third filter screen away from the second filter screen. The through groove adjacent to the first filter screen and located on the side of the first filter screen away from the second filter screen is the upper sewage outlet.

[0008] Preferably, the lower sewage outlet and the drain outlet are located on the same straight line and are symmetrically arranged about the center of the partition, and a circle of sealing rubber ring is provided on the outer periphery of the partition, and the outer periphery of the sealing rubber ring is used to contact the inner wall of the filter cartridge.

[0009] Preferably, the stirring module includes a stirring shaft, a stirring paddle, a first cleaning frame, a first rubber scraper, a second cleaning frame and a second rubber scraper, the first rubber scraper and the second rubber scraper constitute the cleaning element, the upper end of the stirring shaft is connected to the stirring drive module, the lower end of the stirring shaft passes through the toothed disk and the partition in sequence and extends to the inner bottom surface of the filter cartridge, the stirring paddle is circumferentially installed on the upper half of the stirring shaft, the first cleaning frame is installed on the upper half of the stirring shaft and is located on the outside of the stirring paddle, the first rubber scraper is installed on the outer edge of the first cleaning frame, and is used to contact the inner wall of the upper half of the filter cartridge and the upper end surface of the toothed disk, the second cleaning frame is installed on the lower half of the stirring shaft and is located below the partition, and the second rubber scraper is installed on the outer edge of the second cleaning frame, and is used to contact the inner wall of the lower half of the filter cartridge.

[0010] Preferably, the first cleaning frame includes two symmetrically arranged first cleaning units, and the first cleaning unit is an L-shaped frame; the shape of the second cleaning frame is consistent with the cross-sectional shape of the lower half of the filter cartridge.

[0011] Preferably, the filter drive module includes a servo motor and a driving gear, and a driving chamber connected to the interior of the filter cylinder is installed on the outer wall of the filter cylinder, the servo motor is installed at the upper end of the driving chamber, the driving gear is installed in the driving chamber, and the output shaft of the servo motor is connected to the driving gear, and the outer periphery of the driving gear is meshed with the outer periphery of the gear disk.

[0012] Preferably, a mounting collar is circumferentially mounted on the outer wall of the filter cartridge, a plurality of pillars are mounted on the mounting collar, and the lower ends of the pillars are used to contact the ground.

[0013] Preferably, an opening is provided at the upper end of the filter cartridge, and a top cover can be detachably connected to the opening. The outer periphery of the opening and the outer periphery of the top cover are provided with multiple connecting flanges, and the connecting flange on the opening and the connecting flange on the top cover correspond to each other up and down. The connection between the filter cartridge and the top cover is achieved by bolts passing through the two connecting flanges arranged up and down in sequence.

[0014] Preferably, the top cover is provided with a sewage inlet, a reagent inlet and a return water inlet which are all connected to the inside of the filter cartridge, and the return water inlet is connected to the upper end of the return water pipe; the stirring drive module is installed in the middle of the upper end of the top cover.

[0015] Preferably, the lower part of the filter cartridge is a cone section, the feed pump is installed at the lower end of the cone section, and a three-way valve is connected to the outlet of the feed pump, and the three ports of the three-way valve are respectively a connection port for connecting the feed pump, a clean water outlet for discharging filtered water, and a return water outlet for connecting a return water pipe.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] 1. The utility model sets a partition and a toothed disc, and sets a drain outlet and a lower sewage outlet on the partition, and eight through grooves are opened at equal angles on the toothed disc, so that every time the toothed disc rotates 45°, it can ensure that two of the through grooves are aligned with the drain outlet and the lower sewage outlet respectively; during filtering, the first filter screen, the second filter screen and the third filter screen are aligned with the drain outlet in turn to achieve step-by-step filtration of geothermal tail water. At this time, sealing plates are installed in the through grooves corresponding to the lower sewage outlet; after each filtration is completed, the upper sewage outlet is aligned with the lower sewage outlet. At this time, the first rubber scraper can scrape the upper end surface of the toothed disc and scrape impurities to the upper sewage outlet to achieve automatic sewage discharge. While ensuring the filtering effect, the utility model has a more compact structure, occupies a smaller area, can automatically discharge sewage, and is more convenient to use.

[0018] 2. The utility model sets a first cleaning frame and a second cleaning frame. When the stirring shaft rotates to drive the stirring paddle to stir and mix the tail water and the treatment agent, the first cleaning frame and the second cleaning frame can clean the inner wall of the filter cylinder. At the same time, the first rubber scraper on the first cleaning frame can also clean the first filter screen, the second filter screen and the third filter screen on the toothed disc to avoid clogging of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 A schematic diagram of the structure of the geothermal tail water reinjection filtration device provided by the utility model;

[0021] Figure 2 A schematic diagram of the internal structure of the geothermal tail water reinjection filtration device provided by the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the stirring module in the utility model;

[0023] Figure 4 It is a structural schematic diagram of the filter drive module and the rotation module in the utility model;

[0024] In the figure: 1-three-way valve, 2-clean water outlet, 3-drain valve, 4-filter cartridge, 5-top cover, 6-sewage inlet, 7-stirring motor, 8-medicine inlet, 9-return pipe, 10-installation ring, 11-pillar, 12-partition, 1201-drain outlet, 1202-lower sewage outlet, 1203-sealing rubber ring, 13-connecting flange, 14-toothed disc, 1401-upper sewage outlet, 15-servo motor, 16-drive bin, 17-stirring shaft, 18-stirring paddle, 19-first rubber scraper, 20-first cleaning rack, 21-second cleaning rack, 22-second rubber scraper, 23-driving gear, 24-first filter screen, 25-second filter screen, 26-third filter screen, 27-sealing plate, 28-feeding pump, 29-feeding channel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model aims to provide a geothermal tail water reinjection filtering device to solve the problems existing in the prior art, with a small overall occupied volume and capable of realizing automatic cleaning and sewage discharge of the filter screen.

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] like Figure 1-Figure 4 As shown, the present embodiment provides a geothermal tail water reinjection filtration device, including a filter cartridge 4, a return pipe 9, a filter drive module, a rotation module, a stirring drive module and a stirring module. A feed pump 28 is installed at the lower end of the filter cartridge 4, the lower end of the return pipe 9 is installed at the lower end of the filter cartridge 4, and the upper end of the return pipe 9 is installed at the upper end of the filter cartridge 4. The return pipe 9 can, under the action of the feed pump 28, introduce the filtered water located in the lower part of the filter cartridge 4 into the upper part of the filter cartridge 4 and filter it again to improve the filtering effect; the filter drive module is installed on the outer wall of the filter cartridge 4 and is transmission-connected to the rotation module, and the filter drive module is used to drive the rotation module to rotate, the rotation module is located inside the filter cartridge 4, and the rotation module is provided with an upper sewage outlet 1401 and a plurality of filter screens with different apertures and located on the same plane. The multi-stage filter screens are located on the same plane, which can reduce the occupied space to a certain extent, while ensuring the filtering effect, making the overall structure more compact and occupying less ground. The filter element 1201 is provided with a drain port 1201 and a lower sewage port 1202. As the rotary module rotates, the drain port 1201 can be aligned with different filter screens to achieve step-by-step filtration. Large particles of impurities are filtered first, and then small particles of impurities are filtered step by step. The filtration effect can be improved. At the same time, the filter screen blockage can be reduced to a certain extent, and the lower sewage port 1202 can be aligned with the upper sewage port 1401. The lower end of the lower sewage port 1202 is connected to the sewage valve 3 on the outer wall of the filter cartridge 4 through a guide channel 29, so that the filtered impurities can be discharged through the diversion conduction and the sewage valve 3 to achieve automatic sewage discharge. The stirring drive module is installed at the upper end of the filter cartridge 4 and can drive the stirring module to rotate. The stirring module is located inside the filter cartridge 4 to achieve stirring of the sewage and the treatment agent in the filter cartridge 4, so that they are fully mixed, which is convenient for better treatment of the tail water.

[0029] The stirring module is provided with a cleaning element, which can clean the inner wall of the filter cartridge 4 and the upper end surface of the rotating module to clean the impurities adhering to the inner wall of the filter cartridge 4 and the filter screen to avoid clogging of the filter screen.

[0030] Specifically, the rotating module is a toothed disc 14, which is provided with eight circumferentially evenly arranged through grooves. Those skilled in the art can also change the number of through grooves according to actual needs to achieve more levels of filtration. There are three filter screens, which are installed in different through grooves respectively, and the three filter screens include a first filter screen 24, a second filter screen 25 and a third filter screen 26 which are arranged in sequence in a clockwise direction and have decreasing apertures. Sealing plates 27 are installed in other through grooves which are located on the same straight line as the filter screens and are symmetrical about the center of the toothed disc 14, so that when the filter screens are aligned with the drain outlet 1201 in sequence, the lower sewage outlet 1202 is blocked by the sealing plate 27, so that all sewage passes through the filter screen to reach the lower part of the filter cylinder 4, and a sealing plate 27 is also installed in the through groove adjacent to the third filter screen 26 and located on the side of the third filter screen 26 away from the second filter screen 25. The through groove adjacent to the first filter screen 24 and located on the side of the first filter screen 24 away from the second filter screen 25 is the upper sewage outlet 1401. Through the above design, the toothed disc 14 can ensure that two of the through slots are aligned with the drain port 1201 and the lower sewage outlet 1202, respectively, every time it rotates 45 degrees. During filtering, the first filter screen 24, the second filter screen 25 and the third filter screen 26 are aligned with the drain port 1201 in sequence to achieve step-by-step filtration of geothermal tail water. At this time, the sealing plate 27 is installed in the through slot corresponding to the lower sewage outlet 1202; after each filtration is completed, the upper sewage outlet 1401 is aligned with the lower sewage outlet 1202. At this time, the cleaning element can scrape the upper end surface of the toothed disc 14 and scrape the impurities to the upper sewage outlet 1401 to achieve automatic sewage discharge. After the tail water is filtered, the upper sewage outlet 1401 is aligned with the lower sewage outlet 1202. At this time, the impurities filtered out of the tail water can fall onto the material guide channel 29 through the sewage outlet, and then be discharged by the sewage valve 3, thereby realizing automatic sewage discharge and being more convenient to use. Through the relative rotation of the partition 12 and the toothed disc 14, the structure is more compact and occupies a smaller area while ensuring the filtering effect.

[0031] The lower sewage outlet 1202 and the drain outlet 1201 are located on the same straight line and are symmetrically arranged about the center of the partition 12, which can ensure that each filter is aligned with the drain outlet 1201 respectively, and the lower sewage outlet 1202 is blocked by the sealing plate 27; a circle of sealing rubber ring 1203 is provided on the outer periphery of the partition 12, and the outer periphery of the sealing rubber ring 1203 is used to contact the inner wall of the filter cartridge 4, so that the unfiltered tail water is not easy to leak from the gap at the connection between the partition 12 and the filter cartridge 4, and the filtering effect is better.

[0032] The stirring module includes a stirring shaft 17, a stirring paddle 18, a first cleaning frame 20, a first rubber scraper 19, a second cleaning frame 21 and a second rubber scraper 22. The first rubber scraper 19 and the second rubber scraper 22 constitute a cleaning element. The upper end of the stirring shaft 17 is connected to the stirring drive module and is driven to rotate by the stirring drive module. The lower end of the stirring shaft 17 passes through the toothed disc 14 and the partition 12 in sequence and extends to the inner bottom surface of the filter cartridge 4. The toothed disc 14 and the stirring shaft 17, and the partition 12 and the stirring shaft 17 are connected by bearings to avoid affecting the rotation of the stirring shaft 17. The stirring paddle 18 is circumferentially installed on the upper half of the stirring shaft 17, and as the stirring shaft 17 rotates, the sewage and the treatment located at the upper part of the filter cartridge 4 are stirred. The first cleaning frame 20 is installed on the upper half of the stirring shaft 17 and is located on the outside of the stirring paddle 18. The first rubber scraper 19 is installed on the outer edge of the first cleaning frame 20 and is used to contact the inner wall of the upper half of the filter cylinder 4 and the upper end surface of the toothed disk 14, so that as the stirring shaft 17 rotates, the first rubber scraper 19 contacts and scrapes off impurities on the inner wall of the upper half of the filter cylinder 4 and the upper end surface of the toothed disk 14. The second cleaning frame 21 is installed on the lower half of the stirring shaft 17 and is located below the partition 12. The second rubber scraper 22 is installed on the outer edge of the second cleaning frame 21 and is used to contact the inner wall of the lower half of the filter cylinder 4, so as to scrape off impurities on the inner wall of the lower half of the filter cylinder 4 as the stirring shaft 17 rotates.

[0033] The first cleaning frame 20 includes two symmetrically arranged first cleaning units, the first cleaning unit is an L-shaped frame, and a first rubber scraper 19 is installed on the outer wall surface of the first cleaning unit to ensure the cleaning of the inner wall of the upper half of the filter cylinder 4 and the upper end surface of the toothed disk 14; the shape of the second cleaning frame 21 is consistent with the cross-sectional shape of the lower half of the filter cylinder 4, and the second rubber scraper 22 is installed on the outer wall surface of the second cleaning frame 21 to ensure that the second rubber scraper 22 can clean the lower inner wall of the filter cylinder 4 and improve the cleaning effect.

[0034] The filter drive module includes a servo motor 15 and a drive gear 23. The outer wall of the filter cartridge 4 is provided with a drive chamber 16 connected to the inside of the filter cartridge 4. The servo motor 15 is installed at the upper end of the drive chamber 16. The drive gear 23 is installed in the drive chamber 16. The output shaft of the servo motor 15 is connected to the drive gear 23 and can drive the drive gear 23 to rotate. The outer periphery of the drive gear 23 is meshed with the outer periphery of the toothed disc 14 and is used to drive the toothed disc 14 to rotate, thereby achieving filtration and sewage discharge with the rotation of the toothed disc 14. The toothed disc 14 rotates 45° each time, which is convenient for cooperating with the first filter screen 24, the second filter screen 25 and the third filter screen 26 to filter the tail water step by step.

[0035] A mounting collar 10 is circumferentially mounted on the outer wall of the filter cartridge 4 , and a plurality of pillars 11 are mounted on the mounting collar 10 . The lower ends of the pillars 11 are used to contact the ground to support the entire device.

[0036] An opening is provided at the upper end of the filter cartridge 4, and a top cover 5 can be detachably connected to the opening. A plurality of connecting flanges 13 are provided on the outer periphery of the opening and the outer periphery of the top cover 5, and the connecting flange 13 on the opening and the connecting flange 13 on the top cover 5 correspond to each other up and down. The connection between the filter cartridge 4 and the top cover 5 is achieved by bolts passing through the two connecting flanges 13 arranged up and down in sequence, which facilitates disassembly, assembly and cleaning, and has a more reasonable design.

[0037] The top cover 5 is provided with a sewage inlet 6, a reagent inlet 8 and a return water inlet, all of which can be connected to the interior of the filter cartridge 4. The sewage inlet 6 is used to introduce the sewage to be treated into the filter cartridge 4, the reagent inlet 8 is used to introduce the treatment reagent into the filter cartridge 4, and the return water inlet is connected to the upper end of the return water pipe 9 and is used to pass the return water into the interior of the filter cartridge 4; the stirring drive module is installed in the middle of the upper end of the top cover 5.

[0038] The lower part of the filter cartridge 4 is a conical section to avoid dead corners and ensure that all water on the bottom surface of the filter cartridge 4 can be discharged. The feed pump 28 is installed at the lower end of the conical section, and a three-way valve 1 is connected to the outlet of the feed pump 28. The three ports of the three-way valve 1 are respectively a connection port for connecting the feed pump 28, a clean water outlet 2 for discharging filtered water, and a return water outlet for connecting the return water pipe 9.

[0039] The working process of the geothermal tail water reinjection filtration device provided in this embodiment is as follows:

[0040] The geothermal tail water enters the filter cartridge 4 from the sewage inlet 6, and treatment reagents such as flocculants are added into the filter cartridge 4 through the reagent inlet 8. The stirring motor 7 drives the stirring shaft 17 to rotate, so that the treatment reagents and the tail water are mixed more fully. The mixed tail water is first filtered by the first filter screen 24 and then enters the lower part of the filter cartridge 4. Then the servo motor 15 works to drive the driving gear 23 to rotate, so that the toothed disc 14 rotates 135 degrees counterclockwise, so that the lower sewage outlet 1202 is aligned with the upper sewage outlet 1401, and the sewage is automatically discharged. Then the toothed disc 14 rotates clockwise. The needle rotates 90° to align the second filter screen 25 with the drain outlet 1201, and then the tail water returns to the upper part of the filter cylinder 4 through the return pipe 9 under the action of the feed pump 28, and is filtered twice through the second filter screen 25. After the filtration is completed, the toothed disc 14 rotates 90° counterclockwise to start draining, and then the toothed disc 14 rotates 45° clockwise to align the third filter screen 26 with the drain outlet 1201 for the third filtration. After the filtration is completed, the toothed disc 14 rotates 45° counterclockwise to complete the reset and start draining. The filtered tail water is discharged from the clean water outlet 2.

[0041] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A geothermal tail water recharge filtration device, characterized in that: The filter cartridge comprises a filter cartridge, a water return pipe, a filter drive module, a rotating module, a stirring drive module and a stirring module, wherein a feed pump is installed at the lower end of the filter cartridge, the lower end of the water return pipe is installed at the lower end of the filter cartridge, and the upper end of the water return pipe is installed at the upper end of the filter cartridge, and the water return pipe can guide the filtered water in the filter cartridge to the upper part of the filter cartridge and filter it again under the action of the feed pump; the filter drive module is installed at the outer wall of the filter cartridge and is transmission-connected to the rotating module, the rotating module is located inside the filter cartridge, and an upper sewage outlet and a plurality of filter screens with different apertures and located on the same plane are provided on the rotating module, A partition is fixed at a position in the filter cartridge corresponding to the lower end of the rotating module, and a drain port and a lower sewage port are provided on the partition. As the rotating module rotates, the drain port can be aligned with different filter screens, and the lower sewage port can be aligned with the upper sewage port. The lower end of the lower sewage port is connected to the sewage valve on the outer wall of the filter cartridge via a material guide channel; the stirring drive module is installed at the upper end of the filter cartridge and can drive the stirring module to rotate. The stirring module is located inside the filter cartridge, and a cleaning element is provided on the stirring module, and the cleaning element can clean the inner wall of the filter cartridge and the upper end surface of the rotating module.

2. The geothermal tail water recharging filtration device according to claim 1, characterized in that: The rotating module is a toothed disc, which is provided with eight circumferentially evenly arranged through grooves. There are three filter screens, which are respectively installed in different through grooves, and the three filter screens include a first filter screen, a second filter screen and a third filter screen which are arranged in sequence in a clockwise direction and whose apertures decrease in sequence. Sealing plates are installed in the other through grooves which are located on the same straight line as the filter screens and are symmetrical about the center of the toothed disc. The sealing plate is also installed in the through groove which is adjacent to the third filter screen and located on the side of the third filter screen away from the second filter screen. The through groove which is adjacent to the first filter screen and located on the side of the first filter screen away from the second filter screen is the upper sewage outlet.

3. The geothermal tail water recharging filtration device according to claim 2 is characterized in that: The lower sewage outlet and the drainage outlet are located on the same straight line and are symmetrically arranged about the center of the partition. A circle of sealing rubber ring is arranged on the outer periphery of the partition. The outer periphery of the sealing rubber ring is used to contact the inner wall of the filter cartridge.

4. The geothermal tail water reinjection filtration device according to claim 3 is characterized in that: The stirring module includes a stirring shaft, a stirring paddle, a first cleaning frame, a first rubber scraper, a second cleaning frame and a second rubber scraper, the first rubber scraper and the second rubber scraper constitute the cleaning element, the upper end of the stirring shaft is connected to the stirring drive module, the lower end of the stirring shaft passes through the toothed disk and the partition in sequence and extends to the inner bottom surface of the filter cartridge, the stirring paddle is circumferentially installed on the upper half of the stirring shaft, the first cleaning frame is installed on the upper half of the stirring shaft and is located on the outside of the stirring paddle, the first rubber scraper is installed on the outer edge of the first cleaning frame, and is used to contact the inner wall of the upper half of the filter cartridge and the upper end surface of the toothed disk, the second cleaning frame is installed on the lower half of the stirring shaft and is located below the partition, and the second rubber scraper is installed on the outer edge of the second cleaning frame, and is used to contact the inner wall of the lower half of the filter cartridge.

5. The geothermal tail water reinjection filtration device according to claim 4 is characterized in that: The first cleaning frame includes two symmetrically arranged first cleaning units, and the first cleaning unit is an L-shaped frame; the shape of the second cleaning frame is consistent with the cross-sectional shape of the lower half of the filter cartridge.

6. The geothermal tail water reinjection filtration device according to claim 2, characterized in that: The filter drive module includes a servo motor and a driving gear. A driving chamber connected to the interior of the filter cartridge is installed on the outer wall of the filter cartridge. The servo motor is installed at the upper end of the driving chamber. The driving gear is installed in the driving chamber. The output shaft of the servo motor is connected to the driving gear. The outer periphery of the driving gear is meshed with the outer periphery of the gear disk.

7. The geothermal tail water reinjection filtration device according to claim 1, characterized in that: A mounting collar is circumferentially mounted on the outer wall of the filter cartridge, a plurality of pillars are mounted on the mounting collar, and the lower ends of the pillars are used to contact the ground.

8. The geothermal tail water reinjection filtration device according to claim 1, characterized in that: An opening is provided at the upper end of the filter cartridge, and a top cover can be detachably connected to the opening. The outer periphery of the opening and the outer periphery of the top cover are both provided with multiple connecting flanges, and the connecting flange on the opening and the connecting flange on the top cover correspond to each other up and down. The connection between the filter cartridge and the top cover is achieved by bolts passing through the two connecting flanges arranged up and down in sequence.

9. The geothermal tail water reinjection filtration device according to claim 8, characterized in that: The top cover is provided with a sewage inlet, a reagent inlet and a return water inlet which are all connected to the inside of the filter cartridge, and the return water inlet is connected to the upper end of the return water pipe; the stirring drive module is installed in the middle of the upper end of the top cover.

10. The geothermal tail water reinjection filtration device according to claim 1, characterized in that: The lower part of the filter cartridge is a cone section, the feed pump is installed at the lower end of the cone section, and a three-way valve is connected to the outlet of the feed pump. The three ports of the three-way valve are respectively a connection port for connecting the feed pump, a clean water outlet for discharging filtered water, and a return water outlet for connecting a return water pipe.

Images