Biogas slurry, water and fertilizer integrated drip irrigation machine

Abstract

The invention relates to the technical field of water and fertilizer drip irrigation, in particular to a biogas slurry, water and fertilizer integrated drip irrigation machine. Comprising a filter cartridge which is coaxially arranged in the outer cylinder, a coarse filter screen, a fine filter screen, a first scraper blade and a second scraper blade are arranged in the filter cartridge, water permeable holes are annularly and uniformly formed in the outer side wall of a lower cavity, and a water outlet is formed in the outer side wall of the lower cavity. And a blow-off pipe communicated with the filter cartridge is arranged at the bottom of the outer barrel. By means of multi-layer fine filtering combination, biogas slurry is purified at an irrigation inlet, impurities are reduced, a drip irrigation head is prevented from being blocked, and the irrigation efficiency is improved; the rotary driving mechanism regularly drives the scraping plate to accurately scrape impurities, and automatic cleaning and discharging are achieved by means of the locking opening and closing device and the movable sealing plate; the flow guide cover optimizes biogas slurry dispersion, deals with unstable supply and reduces pipe inlet pressure.

Description

Technical Field

[0001] The invention relates to the technical field of water and fertilizer drip irrigation, and in particular to a biogas slurry water and fertilizer integrated drip irrigation machine. Background Art

[0002] In the field of agricultural irrigation, with the in-depth promotion of resource recycling and precision fertilization concepts, biogas slurry, as an organic fertilizer rich in nutrients, is widely used in water-fertilizer integrated drip irrigation systems. However, biogas slurry usually contains various impurities such as undecomposed fecal residues, straw fibers, and sediment. If these impurities enter the drip irrigation system directly, they will cause many serious problems.

[0003] Traditional drip irrigation equipment often lacks effective filtering devices, or is only equipped with simple and extensive filtering components, which makes it difficult to cope with the complex impurity components of biogas slurry. On the one hand, large particles of impurities such as undecomposed fecal residues and large pieces of silt are easy to accumulate at the pipe inlet, valve and drip irrigation head, which directly leads to pipe blockage, making the water flow of the drip irrigation system unsmooth or even completely interrupted, greatly affecting the uniformity and efficiency of irrigation, and unable to meet the continuous demand of crops for water and nutrients. On the other hand, fine impurities such as straw fibers, tiny silt particles and colloidal substances partially dissolved in biogas slurry, although they can pass through some simple filters, will gradually adhere and deposit on the inner wall of the pipe over time, which not only reduces the effective flow cross-sectional area of ​​the pipe, increases water flow resistance, causes energy waste, but also provides a breeding ground for microorganisms. The biofilm produced by microbial reproduction and metabolism further increases the risk of pipe blockage, and may contaminate the drip irrigation head, reduce its water uniformity, and ultimately lead to the performance decline of the entire drip irrigation system. Frequent manual maintenance and cleaning are required, which consumes a lot of manpower, material resources and time costs, seriously restricting the efficient progress of agricultural production.

[0004] In addition, even if some existing filtering equipment has a certain filtering function, most of them do not have self-cleaning ability, or the self-cleaning method is single and the effect is not good. After a long period of operation, more and more impurities accumulate on the filter screen, and the filtering efficiency drops sharply. The machine must be shut down for manual cleaning or replacement of the filter screen. This will undoubtedly delay the irrigation and fertilization process of crops, affect the growth of crops, and reduce agricultural output efficiency during the busy farming season when the continuity of irrigation is extremely high. Moreover, since the biogas slurry has a certain corrosiveness, the service life of filtering equipment made of ordinary materials is short. Frequent replacement of equipment parts not only increases costs, but also affects the stability of production. Therefore, the development of a biogas slurry water and fertilizer integrated drip irrigation machine that can efficiently filter biogas slurry impurities, has a reliable self-cleaning function and is corrosion-resistant has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] Based on this, it is necessary to provide a biogas slurry water and fertilizer integrated drip irrigation machine to address the existing technical problems.

[0006] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0007] The present invention provides a biogas slurry water and fertilizer integrated drip irrigation machine, comprising a base and a main drip irrigation pipe installed on the base, a plurality of sub-drip irrigation pipes and a plurality of drip irrigation heads evenly arranged on each sub-drip irrigation pipe, wherein the plurality of sub-drip irrigation pipes are all connected to the main drip irrigation pipe, and further comprising an outer cylinder connected to the feeding end of the main drip irrigation pipe, wherein a filtering mechanism, a self-cleaning mechanism and a rotating driving mechanism are arranged inside the outer cylinder, the outer cylinder is arranged vertically, the top of the outer cylinder is connected to a liquid supply pipe for providing water and fertilizer, the bottom of the outer cylinder is connected to the main drip irrigation pipe through a connecting pipe, a first solenoid valve is arranged on the connecting pipe, the filtering mechanism comprises a filtering cylinder coaxially arranged in the outer cylinder, a coarse filtering screen is arranged on the upper half of the filtering cylinder, and a filtering mechanism A rotatable flow guide cover is provided between the top of the cylinder and the coarse filter screen, a first scraper that can rotate to scrape off impurities is provided above the coarse filter screen, a partition that divides the filter cylinder into an upper chamber and a lower chamber is provided in the middle of the filter cylinder, and a number of diversion holes are evenly distributed on the partition, a self-cleaning mechanism is installed in the lower chamber, a rotary drive mechanism is installed in the outer cylinder, the self-cleaning mechanism is equipped with a rotatable fine filter screen, a second scraper that cooperates with the fine filter screen is rotatably provided above the fine filter screen, the fine filter screen, the first scraper and the second scraper are all connected to the rotary drive mechanism in transmission, water-permeable holes are evenly arranged in an annular shape on the outer side wall of the lower chamber, and a sewage pipe connected to the filter cylinder is provided at the bottom of the outer cylinder.

[0008] Preferably, the first scraper and the second scraper are provided with a locking opening and closing device at one end near the inner wall of the filter cartridge, a movable sealing plate is provided on the side wall of the filter cartridge, the movable sealing plate is arranged in an arc shape and is consistent with the curvature of the filter cartridge, a waste discharge channel is fixedly installed on the outer wall of the filter cartridge, the waste discharge channel is connected with the sewage pipe, the movable sealing plate is used to separate the inner side of the filter cartridge and the waste discharge channel, a mounting groove for the deflection of the movable sealing plate is provided on the filter cartridge, an elastic metal resistance piece is provided in the mounting groove, the other end of the metal resistance piece is in resistance with the movable sealing plate, the locking opening and closing device is transmission-connected with the movable sealing plate, a second solenoid valve and a first one-way valve are provided on the sewage pipe, a fifth solenoid valve is provided on the waste discharge channel, and the waste discharge channel is connected with the outer wall of the filter cartridge at the height of the first scraper and the second scraper respectively.

[0009] Preferably, the locking and opening and closing device includes an elastic telescopic block, a spring, an insert block and a reset block. The reset block is fixedly mounted on the inner wall of the filter cartridge, the elastic telescopic block is fixedly mounted on the ends of the first scraper and the second scraper, the spring is arranged on the inner side of the elastic telescopic block, the insert block is fixedly mounted on one end of the elastic telescopic block close to the filter cartridge, a slot matching the insert block is provided on the movable sealing plate, and a conflicting shrinkage chamfer is provided on the side where the insert block fits with the reset block.

[0010] Preferably, a recoil pipe is also fixedly installed on the outer cylinder, one end of the recoil pipe is connected to the flushing water source, and the other end of the recoil pipe is divided into two joints, the two joints are respectively connected to the upper chamber and the lower chamber of the filter cylinder, and the connecting positions are respectively located below the coarse filter screen and below the fine filter screen, a third solenoid valve is provided on the liquid supply pipe, and a fourth solenoid valve is provided on the recoil pipe.

[0011] Preferably, a rotatable annular rotating frame is provided in the filter cartridge, the annular rotating frame is fixedly connected to the fine filter screen, the annular rotating frame is transmission-connected to the rotary drive mechanism, and a limit ring is provided in the filter cartridge, the limit ring is arranged at the upper and lower ends of the annular rotating frame.

[0012] Preferably, the rotary drive mechanism includes a first rotating shaft vertically arranged on the outer cylinder, an isolation chamber is provided at the bottom of the outer cylinder, a rotary drive is installed in the isolation chamber, the output end of the rotary drive is fixedly connected to one end of the first rotating shaft, a first driving gear is fixedly installed on the first rotating shaft, a first ring tooth is fixedly provided on the annular rotating frame, the first driving gear and the first ring tooth are at the same height, the first driving gear is meshed with the first ring tooth, a first partition mounting frame is provided on the outer side wall of the filter cylinder, the first partition mounting frame is connected to the inside of the filter cylinder, and the first driving gear is located in the first partition mounting frame.

[0013] Preferably, the rotary drive mechanism also includes a reducer, a sealing mounting frame, a second rotating shaft, a third rotating shaft and a synchronous rotation device. The sealing mounting frame is fixedly mounted on the outer side wall of the filter cartridge, the reducer is fixedly mounted in the sealing mounting frame, the end of the first rotating shaft away from the rotary driver is transmission connected to the reducer, the second rotating shaft is vertically mounted in the outer cylinder, the second rotating shaft is transmission connected to the output end of the reducer, the third rotating shaft is coaxially arranged with the filter cartridge, the third rotating shaft is located in the upper chamber of the filter cartridge, the third rotating shaft is transmission connected to the second rotating shaft through the synchronous rotation device, and the first scraper is fixedly connected to the third rotating shaft.

[0014] Preferably, the synchronous rotation device includes a first rotating mounting frame, a third partition mounting frame and a second driving gear. The first rotating mounting frame is coaxially rotatably arranged in the upper chamber of the filter cartridge. The first rotating mounting frame is fixedly connected to the top end of the third rotating shaft. A second ring gear is provided on the outer side wall of the first rotating mounting frame. The third partition mounting frame is connected to the interior of the filter cartridge. The second driving gear is installed in the third partition mounting frame and meshes with the second ring gear. The second driving gear is connected to the second rotating shaft through a synchronous belt drive.

[0015] Preferably, the self-cleaning mechanism also includes a second rotating mounting frame and a fourth rotating shaft which are coaxially arranged with the filter cartridge, the top of the fourth rotating shaft is fixedly connected to the second rotating mounting frame, the second scraper is fixedly mounted on the fourth rotating shaft, a second partition mounting frame connected to the filter cartridge is provided above the first partition mounting frame, a third driving gear is provided in the second partition mounting frame, a third ring gear is provided on the second rotating mounting frame, the third ring gear is meshed with the third driving gear, and the second rotating shaft is connected to the third driving gear through a synchronous belt.

[0016] Preferably, a rotating disk is installed on the top of the outer cylinder through a bearing seat, and the air guide cover is fixedly connected to the rotating disk through a connecting rod. The air guide cover is an inverted cone, and the tip of the air guide cover is arranged at the bottom. A center hole is opened at the center of the air guide cover, and a leakage hole is arranged in a ring on the air guide cover. An impact guide plate is inclined on the top of the air guide cover, and a number of impact guide plates are provided and distributed in a ring around the axis of the air guide cover.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can purify the biogas slurry at the inlet of the irrigation pipe by setting a coarse filter screen, a partition diversion hole and a multi-layer fine filter combination of a self-cleaning mechanism, thereby minimizing the amount of impurities entering the irrigation system, ensuring that the drip irrigation head is not easily blocked, maintaining a stable drip irrigation effect, and improving the efficiency of biogas slurry irrigation.

[0019] 2. The rotary drive mechanism starts at a fixed time, and the first scraper and the second scraper perform precise scraping operations on the coarse filter and the fine filter respectively. The intermittent opening of the locking opening and closing device and the movable sealing plate can realize automatic cleaning and discharging. The design of the guide cover can continuously optimize the dispersion state of the biogas slurry, effectively cope with the unstable supply of biogas slurry in agricultural irrigation, and reduce the inlet pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of a biogas slurry, water and fertilizer integrated drip irrigation machine;

[0021] Figure 2 It is a schematic diagram of a partial three-dimensional structure of a biogas slurry water and fertilizer integrated drip irrigation machine;

[0022] Figure 3 This is a partial structural front view of a biogas slurry, water and fertilizer integrated drip irrigation machine;

[0023] Figure 4 It is a three-dimensional structural diagram of a filter cartridge, a filter mechanism, a self-cleaning mechanism and a rotary drive mechanism in a biogas slurry water and fertilizer integrated drip irrigation machine;

[0024] Figure 5 It is a three-dimensional structural diagram of a filtering mechanism, a self-cleaning mechanism and a rotating drive mechanism in a biogas slurry water and fertilizer integrated drip irrigation machine;

[0025] Figure 6 It is a three-dimensional cross-sectional view of a biogas slurry, water and fertilizer integrated drip irrigation machine;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of a rotary drive mechanism in a biogas slurry, water and fertilizer integrated drip irrigation machine;

[0027] Figure 8 It is a partial three-dimensional structural diagram of the filtering mechanism and the self-cleaning mechanism in a biogas slurry water and fertilizer integrated drip irrigation machine;

[0028] Fig. 9 It is a partial three-dimensional structural diagram of a filter cartridge and a movable sealing plate in a biogas slurry, water and fertilizer integrated drip irrigation machine;

[0029] Fig.10 It is a three-dimensional structural schematic diagram of a flow guide cover in a biogas slurry, water and fertilizer integrated drip irrigation machine;

[0030] Fig.11 yes Figure 8 Enlarged view of point A in the middle.

[0031] The numbers in the figure are:

[0032] 1. Main drip irrigation pipe; 2. Sub-drip irrigation pipe; 3. Drip irrigation head; 4. Outer tube; 5. Liquid supply pipe; 6. Connecting pipe; 7. First solenoid valve; 8. Filter cartridge; 9. Coarse filter screen; 10. Flow guide cover; 11. First scraper; 12. Partition plate; 13. Diverter hole; 14. Fine filter screen; 15. Second scraper; 16. Water permeable hole; 17. Drain pipe; 18. Active sealing plate; 19. Waste discharge channel; 20. Mounting groove; 21. Elastic metal resistance piece; 22. Second solenoid valve; 23. First one-way valve; 24. Fifth solenoid valve; 25. Elastic telescopic block; 26. Spring; 27. Insert block; 28. Slot; 29. ​​Reset block; 30. Resistance shrinkage chamfer; 31. Recoil pipe ; 32. The third solenoid valve; 33. The fourth solenoid valve; 34. The annular rotating frame; 35. The first rotating shaft; 36. The rotating driver; 37. The first driving gear; 38. The first ring gear; 39. The first partition mounting frame; 40. The reducer; 41. The sealing mounting frame; 42. The second rotating shaft; 43. The third rotating shaft; 44. The first rotating mounting frame; 45. The third partition mounting frame; 46. The second driving gear; 47. The second ring gear; 48. The second rotating mounting frame; 49. The fourth rotating shaft; 50. The third driving gear; 51. The third ring gear; 52. The rotating disk; 53. The connecting rod; 54. The center hole; 55. The leakage hole; 56. The impact guide plate; 57. The second partition mounting frame. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figure 1-11 The biogas slurry water and fertilizer integrated drip irrigation machine shown in the figure comprises a base and a main drip irrigation pipe 1 installed on the base, a plurality of sub-drip irrigation pipes 2 and a plurality of drip irrigation heads 3 evenly arranged on each sub-drip irrigation pipe 2, the plurality of sub-drip irrigation pipes 2 are all connected to the main drip irrigation pipe 1, and also comprises an outer cylinder 4 connected to the feeding end of the main drip irrigation pipe 1, the outer cylinder 4 is provided with a filtering mechanism, a self-cleaning mechanism and a rotating drive mechanism, the outer cylinder 4 is vertically arranged, the top of the outer cylinder 4 is connected with a liquid supply pipe 5 for providing water and fertilizer, the bottom of the outer cylinder 4 is connected with the main drip irrigation pipe 1 through a connecting pipe 6, the connecting pipe 6 is provided with a first solenoid valve 7, the filtering mechanism comprises a filter cylinder 8 coaxially arranged in the outer cylinder 4, the upper half of the filter cylinder 8 is provided with a coarse filter screen 9, the top of the filter cylinder 8 and the coarse filter screen 9, a rotatable flow guide 10 is provided between the coarse filter screen 9, a first scraper 11 that can rotate to scrape off impurities is provided above the coarse filter screen 9, a partition 12 that divides the filter cartridge 8 into an upper chamber and a lower chamber is provided in the middle of the filter cartridge 8, and a plurality of diversion holes 13 are evenly distributed on the partition 12, a self-cleaning mechanism is installed in the lower chamber, a rotary drive mechanism is installed in the outer cylinder 4, the self-cleaning mechanism is equipped with a rotatable fine filter screen 14, a second scraper 15 that cooperates with the fine filter screen 14 is rotatably provided above the fine filter screen 14, the fine filter screen 14, the first scraper 11 and the second scraper 15 are all connected to the rotary drive mechanism in transmission, water permeable holes 16 are evenly arranged in an annular shape on the outer side wall of the lower chamber, and a sewage pipe 17 connected to the filter cartridge 8 is provided at the bottom of the outer cylinder 4.

[0035] The present invention can effectively intercept undecomposed fecal residues, straw fibers, silt and other impurities, and prevent impurities from entering the pipeline. When drip irrigation is performed, the biogas slurry is transported to the outer cylinder 4 through the liquid supply pipe 5 under the conveyance of the pump. The biogas slurry first reaches the entrance of the filter cylinder 8, and is evenly dispersed by the guide cover 10 installed at the end of the filter cylinder 8 before impacting the coarse filter 9 (when impacting the guide cover 10, the guide cover 10 can be driven to rotate, and the guide cover 10 performs a dispersion operation on the initial biogas slurry with a higher pressure to prevent the larger impact force from directly concentrating on the coarse filter 9). Large impurities are initially intercepted by the coarse filter 9, and the biogas slurry enters the upper chamber through the coarse filter 9. In the upper chamber, the biogas slurry passes through the diverter hole 13 of the partition 12 to form a vortex and enter the lower chamber. In this process, some impurities are intercepted again. It is worth mentioning that the aperture of the diverter hole 13 is slightly smaller than the aperture of the coarse filter 9. The biogas slurry entering the lower chamber is further finely filtered by the self-cleaning mechanism to obtain pure biogas slurry and discharge it from the outer cylinder 4. At the same time, the rotary drive mechanism starts at a fixed time, driving the fine filter 14 in the self-cleaning mechanism to rotate. The impurities attached to the fine filter 14 are thrown to the sewage pipe 17 under the action of centrifugal force and the scouring force of the biogas slurry, and discharged from the filter through the sewage pipe 17, completing the automatic cleaning process. The first solenoid valve 7 is used to control the liquid discharge. The filtered liquid is introduced into the main drip irrigation pipe 1 through the connecting pipe 6, which is convenient for the subsequent drip irrigation operation. The liquid in the main drip irrigation pipe 1 is dispersed and introduced into the sub-drip irrigation pipe 2, and finally the drip irrigation function is realized through the drip irrigation head 3 installed on the sub-drip irrigation pipe 2. The first scraper 11 and the second scraper 15 can be driven by the rotary drive mechanism to rotate, and the impurities on the coarse filter 9 and the fine filter 14 are scraped off during the rotation process, and the impurities are transferred to the sewage pipe 17.

[0036] Through the coarse filter screen 9 of the filter cartridge 8, the diversion holes 13 on the partition 12, and the multi-layer fine filtration of the self-cleaning mechanism, various impurities in the biogas slurry can be graded and intercepted, ensuring that the biogas slurry entering the irrigation system reaches a very high purity, effectively preventing pipe blockage and improving the efficiency of biogas slurry irrigation. The self-cleaning function greatly reduces the frequency and workload of manual cleaning. The rotary drive mechanism drives the fine filter screen 14 to rotate, and the impurities on the fine filter screen 14 are automatically thrown out by centrifugal force and biogas slurry flushing force. The filter can continue to operate without stopping, ensuring the continuity of irrigation operations, especially during the busy farming season, and the irrigation and fertilization of crops will not be delayed due to filter maintenance.

[0037] It is worth mentioning that the filter cartridge 8 is made of high-strength stainless steel with good corrosion resistance to adapt to the chemical characteristics of the biogas slurry. The coarse filter screen 9 is woven from a rigid metal material with a large mesh, which is mainly used to initially block larger impurities and reduce the pressure of subsequent fine filtration. The fine filter screen 14 is composed of multiple layers of filter screens. The outermost layer is a protective screen woven from stainless steel wire, which is used to protect the inner filter screen from external damage; the middle layer is a fine filter screen made of glass fiber, which performs high-precision filtration on the biogas slurry to ensure the purity of the outflowing biogas slurry; the inner layer is a hydrophilic non-woven filter screen, which can effectively absorb tiny suspended matter in the biogas slurry.

[0038] The first scraper 11 and the second scraper 15 are provided with a locking opening and closing device at one end of the inner wall of the filter cartridge 8, a movable sealing plate 18 is provided on the side wall of the filter cartridge 8, the movable sealing plate 18 is arranged in an arc shape and has the same arc as the filter cartridge 8, a waste discharge channel 19 is fixedly installed on the outer wall of the filter cartridge 8, the waste discharge channel 19 is communicated with the sewage pipe 17, the movable sealing plate 18 is used to separate the inner side of the filter cartridge 8 and the waste discharge channel 19, the filter cartridge 8 is provided with a mounting groove 20 for the deflection of the movable sealing plate 18, an elastic metal abutment 21 is provided in the mounting groove 20, the other end of the elastic metal abutment 21 abuts against the movable sealing plate 18, the locking opening and closing device is transmission-connected with the movable sealing plate 18, a second solenoid valve 22 and a first one-way valve 23 are provided on the sewage pipe 17, a fifth solenoid valve 24 is provided on the waste discharge channel 19, and the waste discharge channel 19 is communicated with the outer wall of the filter cartridge 8 at the height of the first scraper 11 and the second scraper 15 respectively.

[0039] When the rotary drive mechanism is started according to the set timing cycle, it not only drives the fine filter 14 to rotate to achieve self-cleaning, but also drives the first scraper 11 and the second scraper 15 to rotate. The first scraper 11 is in the upper chamber of the filter cartridge 8, responsible for scraping off the dirt accumulated on the coarse filter 9 due to intercepting larger impurities; the second scraper 15 is in the lower chamber, cooperating with the fine filter 14 to scrape off the impurities attached to the fine filter 14. It is worth mentioning that there is a speed difference between the fine filter 14 and the second scraper 15 when removing impurities. This speed difference can ensure that the second scraper 15 can slide relative to the fine filter 14, thereby scraping off the impurities on the fine filter 14. As the first scraper 11 and the second scraper 15 rotate, the scraped impurities need to be properly handled to be discharged from the filter cartridge 8. At this time, the locking and opening device close to the inner wall of the filter cartridge 8 begins to work.

[0040] Through the coordinated operation of the movable sealing plate 18 and the waste discharge channel 19, when the first scraper 11 and the second scraper 15 carry impurities and rotate to the position connected to the waste discharge channel 19 (this position is determined by the connecting port preset on the filter cylinder 8 at the height of the first scraper 11 and the second scraper 15), the locking and opening device is triggered, and the movable sealing plate 18 is opened by driving the first scraper 11 and the second scraper 15 to open an opening leading to the waste discharge channel 19, and the impurities on the first scraper 11 and the second scraper 15 can be pushed into the waste discharge channel 19 and discharged outward.

[0041] Originally, under the elastic force of the elastic metal abutment 21, the movable sealing plate 18 is tightly attached to the inner wall of the filter cartridge 8, isolating the inner side of the filter cartridge 8 from the waste discharge channel 19, and preventing the biogas liquid from leaking. However, when the locking and opening devices on the first scraper 11 and the second scraper 15 are triggered, the locking and opening devices drive the movable sealing plate 18 to overcome the elastic force of the elastic metal abutment 21, causing the movable sealing plate 18 to deflect (slide in the installation groove 20), opening a temporary passage from the inside of the filter cartridge 8 to the waste discharge channel 19, and after the connection between the movable sealing plate 18 and the locking and opening device is released, the movable sealing plate 18 is reset under the action of the elastic metal abutment 21, and the sealing effect is re-achieved to prevent the backflow of impurities or prevent a large amount of biogas liquid from being discharged.

[0042] The impurities scraped off from the first scraper 11 and the second scraper 15 are driven by the centrifugal force generated by the rotation of the first scraper 11 and the second scraper 15 and the flow of the biogas slurry itself, and quickly enter the waste discharge channel 19 through the channel opened by the movable sealing plate 18. The waste discharge channel 19 fits the curvature of the filter cartridge 8, and can efficiently guide the flow of impurities, so that it flows smoothly to the connection with the sewage pipe 17.

[0043] During normal filtering, the second solenoid valve 22 is closed to prevent the filtered biogas from being discharged from the sewage pipe 17. When it is necessary to discharge impurities, the second solenoid valve 22 is opened in a timely manner in combination with the scraper cleaning cycle of the rotary drive mechanism. At the same time, the first one-way valve 23 is installed on the sewage pipe 17, allowing impurities and a small amount of accompanying biogas to be discharged to the outside of the sewage pipe 17 under the impetus of centrifugal force, but preventing the external biogas from flowing back to the filter cartridge 8, thereby ensuring the unidirectional nature of the sewage discharge process. The fifth solenoid valve 24 can be used to control the switch in the waste discharge channel 19 to ensure the stability and efficiency of the entire sewage discharge process. The occurrence rate of failures such as blockage of the main drip irrigation pipe 1 and the sub-drip irrigation pipe 2 and blockage of the drip irrigation head 3 due to the backflow of impurities is reduced, thereby improving the reliability and service life of the equipment.

[0044] By setting a locking opening and closing device and a movable sealing plate 18 linked with the first scraper 11 and the second scraper 15, the impurities are transferred immediately and directional after being scraped off. The problem of impurities floating again in the filter cartridge 8 and reattaching to the coarse filter screen 9 and the fine filter screen 14 is avoided, which greatly improves the thoroughness and efficiency of impurity cleaning. The arc design of the waste discharge channel 19 with the same arc as the filter cartridge 8 makes full use of the spatial structure of the filter cartridge 8, reduces the flow resistance of impurities, and enables impurities to be quickly and smoothly transported to the sewage pipe 17, shortens the residence time of impurities in the filter cartridge 8, and reduces interference with the filtration process.

[0045] The entire cleaning and impurity discharge process is closely coordinated with the rotary drive mechanism and is fully automated. No human intervention is required, and impurities are cleaned and discharged in an orderly manner according to the preset time cycle and procedure, which greatly reduces the intensity of manual labor and is especially suitable for long-term, continuous operation scenarios of large-scale farmland irrigation and fertilization. This highly automated and reliable self-cleaning and sewage discharge mechanism enables the drip irrigation machine to operate continuously and stably during critical periods such as busy farming seasons, without the need for frequent shutdowns for maintenance. While ensuring that crops are irrigated and fertilized on time and in sufficient quantities, it reduces the impact of equipment downtime on agricultural production progress and improves agricultural production efficiency.

[0046] The locking and opening device includes an elastic telescopic block 25, a spring 26, an insert block 27, a slot 28 and a reset block 29. The reset block 29 is fixedly mounted on the inner wall of the filter cartridge 8. The elastic telescopic block 25 is fixedly mounted on the ends of the first scraper 11 and the second scraper 15. The spring 26 is arranged on the inner side of the elastic telescopic block 25. The insert block 27 is fixedly mounted on one end of the elastic telescopic block 25 close to the filter cartridge 8. A slot 28 matching the insert block 27 is provided on the movable sealing plate 18. A contact shrinkage chamfer 30 is provided on the side where the insert block 27 fits the reset block 29.

[0047] The plug block 27 of the locking opening and closing device is not inserted into the slot 28 in the initial state, and the plug block 27 is in contact with the outer wall of the filter cartridge 8. The spring 26 is in a naturally relaxed state or only slightly pre-compressed, and the elastic telescopic block 25 does not produce obvious deformation of inward contraction. The first scraper 11 and the second scraper 15 can rotate freely without interfering with the movable sealing plate 18. The chambers inside the filter cartridge 8 normally carry out the biogas slurry filtration process and maintain a stable working state. As the filtration process continues, impurities gradually accumulate. When the rotary drive mechanism is started according to the preset cycle, the first scraper 11 and the second scraper 15 are driven to rotate to clean impurities. The elastic telescopic block 25 fixed at the ends of the two moves synchronously with the first scraper 11 and the second scraper 15. When it moves to the position corresponding to the slot 28 on the movable sealing plate 18, the plug block 27 is inserted into the slot 28. When the plug block 27 is displaced, it drives the movable sealing plate 18 to overcome the elastic force displacement of the elastic metal abutment 21, thereby opening a temporary passage from the inside of the filter cartridge 8 to the waste discharge channel 19, creating conditions for the upcoming impurity discharge. The reset block 29 is located on the movement path of the plug block 27. When the plug block 27 contacts the reset block 29, an outward force is applied to the plug block 27. This force helps the plug block 27 to overcome the elastic force of the spring 26 and retract, separating the plug block 27 and the slot 28, ensuring that the plug block 27 is completely out of the slot 28 and the connection with the movable sealing plate 18 is released.

[0048] The precise docking and transmission design of the plug block 27 and the slot 28 during the rotation process realizes the seamless connection between the rotation position of the first scraper 11 and the second scraper 15 and the opening action of the movable sealing plate 18. When the first scraper 11 and the second scraper 15 carry impurities to the optimal sewage discharge position, the movable sealing plate 18 is instantly triggered to open, and the impurities can be discharged through the opened waste discharge channel 19 without hindrance under the assistance of centrifugal force and the flow of biogas slurry. This precise linkage greatly improves the timeliness and thoroughness of impurity discharge, effectively prevents impurities from remaining in the filter barrel 8 and reattaching to the coarse filter 9 and the fine filter 14, and ensures the continuity of the filtering effect.

[0049] Compared with the complicated electronic control or multi-power source driven impurity discharge mode, the first scraper 11 and the second scraper 15 are used to realize the transmission of the plug block 27 to the movable sealing plate 18, which simplifies the control system and power transmission link of the equipment. It not only reduces the equipment manufacturing cost and potential failure points, but also improves the reliability and stability of the entire sewage discharge system, ensuring continuous and stable operation in long-term and high-intensity agricultural irrigation operations.

[0050] A recoil pipe 31 is also fixedly installed on the outer cylinder 4, one end of the recoil pipe 31 is connected to the flushing water source, and the other end of the recoil pipe 31 is divided into two joints, the two joints are respectively connected to the upper chamber and the lower chamber of the filter cylinder 8, and the connecting positions are respectively located below the coarse filter screen 9 and below the fine filter screen 14. A third solenoid valve 32 is provided on the liquid supply pipe 5, and a fourth solenoid valve 33 is provided on the recoil pipe 31.

[0051] When the drip irrigation machine is operating normally, the third solenoid valve 32 is open, the fourth solenoid valve 33 is closed, and the biogas liquid in the liquid supply pipe 5 enters the filter cylinder 8 through the top of the outer cylinder 4 according to the established process, passes through the guide cover 10, the coarse filter screen 9, and the diversion hole 13 of the partition 12 in sequence, reaches the lower chamber, and is finely filtered by the fine filter screen 14 before being discharged from the outer cylinder 4 for subsequent drip irrigation operations. At this time, the backwash pipe 31 is in a non-working state and does not participate in the biogas liquid transportation path.

[0052] After the equipment has been running for a period of time, the backwashing procedure is started according to a preset time period, pressure difference monitoring data or manual instructions. At this time, the first solenoid valve 7 (located at the connecting pipe 6, controlling the filtered biogas slurry to flow to the main drip irrigation pipe 1) on the liquid supply pipe 5 is first closed, and the output of the filtered biogas slurry to the drip irrigation system is suspended to prevent impurities in the backwashing process from mixing into the purified biogas slurry flow.

[0053] Then, the third solenoid valve 32 on the liquid supply pipe 5 is closed (to prevent impurities from flowing back to the liquid supply pipe 5 with the backwash water flow), and the fourth solenoid valve 33 on the backwash pipe 31 is opened. Under the pressure of the liquid supply pipe 5, the flushing water quickly rushes to the upper chamber and the lower chamber of the filter cartridge 8 through the backwash pipe 31, and the impact position is located below the coarse filter 9 and below the fine filter 14. This reverse water flow can penetrate the fine filter 14, the diversion hole 13 and the coarse filter 9, and flush the impurities attached to the fine filter 14 and the coarse filter 9, so that they are separated from the bottom of the coarse filter 9 and the surface of the fine filter 14. This method is a shutdown cleaning operation, which is performed after the effect of automatic cleaning without stopping the machine is not good, in order to supplement the impurity removal function, reduce maintenance costs, and improve system stability.

[0054] A rotatable annular rotating frame 34 is provided in the filter cartridge 8 , the annular rotating frame 34 is fixedly connected to the fine filter screen 14 , and the annular rotating frame 34 is transmission-connected to the rotary drive mechanism. A limit ring is provided in the filter cartridge 8 , and the limit ring is arranged at the upper and lower ends of the annular rotating frame 34 .

[0055] The rotary drive mechanism includes a first rotating shaft 35 vertically rotatably arranged on the outer cylinder 4. An isolation chamber is provided at the bottom of the outer cylinder 4, and a rotary driver 36 is installed in the isolation chamber. The output end of the rotary driver 36 is fixedly connected to one end of the first rotating shaft 35. A first driving gear 37 is fixedly installed on the first rotating shaft 35. A first ring gear 38 is fixedly provided on the annular rotating frame 34. The first driving gear 37 and the first ring gear 38 are at the same height. The first driving gear 37 is meshed with the first ring gear 38. A first partition mounting frame 39 is provided on the outer side wall of the filter cylinder 8. The first partition mounting frame 39 is connected to the inside of the filter cylinder 8, and the first driving gear 37 is located in the first partition mounting frame 39.

[0056] The fine filter 14 is driven to rotate by the annular rotating frame 34, the limiting ring is used to limit the position of the annular rotating frame 34, the output of the rotary driver 36 drives the first rotating shaft 35 to rotate, the first rotating shaft 35 drives the first driving gear 37 fixedly connected thereto to rotate, and then drives the first ring gear 38 meshing therewith to rotate, the first ring gear 38 drives the annular rotating frame 34 fixedly connected thereto to rotate, and then drives the fine filter 14 fixedly connected to the annular rotating frame 34 to rotate, thereby driving the fine filter 14. The isolation chamber is used to install the rotary driver 36, and the first partition mounting frame 39 is used to install the first driving gear 37, so that its meshing portion is located inside the filter cartridge 8.

[0057] The rotary drive mechanism also includes a reducer 40, a sealing mounting frame 41, a second rotating shaft 42, a third rotating shaft 43 and a synchronous rotation device. The sealing mounting frame 41 is fixedly mounted on the outer wall of the filter cylinder 8, the reducer 40 is fixedly mounted in the sealing mounting frame 41, the end of the first rotating shaft 35 away from the rotary driver 36 is transmission connected to the reducer 40, the second rotating shaft 42 is vertically rotatably mounted in the outer cylinder 4, the second rotating shaft 42 is transmission connected to the output end of the reducer 40, the third rotating shaft 43 is coaxially arranged with the filter cylinder 8, the third rotating shaft 43 is located in the upper chamber of the filter cylinder 8, the third rotating shaft 43 is transmission connected to the second rotating shaft 42 through the synchronous rotation device, and the first scraper 11 is fixedly connected to the third rotating shaft 43.

[0058] When the first rotating shaft 35 rotates, the reducer 40 connected thereto is driven to work, and the reducer 40 drives the second rotating shaft 42 to rotate, and the second rotating shaft 42 drives the third rotating shaft 43 to rotate through the synchronous rotation device, thereby driving the first scraper 11 to rotate. The sealing mounting frame 41 is used to mount the reducer 40.

[0059] The synchronous rotation device includes a first rotating mounting frame 44, a third partition mounting frame 45 and a second driving gear 46. The first rotating mounting frame 44 is coaxially rotatably arranged in the upper chamber of the filter cylinder 8. The first rotating mounting frame 44 is fixedly connected to the top end of the third rotating shaft 43. A second ring gear 47 is provided on the outer side wall of the first rotating mounting frame 44. The third partition mounting frame 45 is connected to the interior of the filter cylinder 8. The second driving gear 46 is installed in the third partition mounting frame 45 and meshes with the second ring gear 47. The second driving gear 46 is connected to the second rotating shaft 42 through a synchronous belt transmission.

[0060] When the synchronous rotating device is driven, the second rotating shaft 42 drives the second driving gear 46 to rotate through the synchronous belt, and then drives the second ring gear 47 meshing therewith to rotate, thereby driving the first rotating mounting frame 44 fixedly connected to the second ring gear 47 to rotate, and the first rotating mounting frame 44 drives the third rotating shaft 43 fixedly connected thereto to rotate, thereby realizing the rotational driving function of the first scraper 11.

[0061] The synchronous rotation device also includes a second rotating mounting frame 48 and a fourth rotating shaft 49 which are coaxially arranged with the filter cartridge 8. The top of the fourth rotating shaft 49 is fixedly connected to the second rotating mounting frame 48. The second scraper 15 is fixedly mounted on the fourth rotating shaft 49. A second partition mounting frame 57 which is connected to the filter cartridge 8 is provided above the first partition mounting frame 39. A third driving gear 50 is provided in the second partition mounting frame 57. A third ring gear 51 is provided on the second rotating mounting frame 48. The third ring gear 51 is meshed with the third driving gear 50. The second rotating shaft 42 is connected to the third driving gear 50 through a synchronous belt.

[0062] When the second rotating shaft 42 rotates, the third driving gear 50 is driven to rotate through the synchronous belt, and the third driving gear 50 drives the third ring gear 51 meshing therewith to rotate, thereby driving the second rotating mounting frame 48 and the fourth rotating shaft 49 to rotate, thereby realizing the rotation function of the second scraper 15 installed on the fourth rotating shaft 49, and because the fine filter 14 is driven by the first rotating shaft 35 and the second scraper 15 is driven by the second rotating shaft 42, a speed difference is generated between the two, thereby facilitating the scraping effect.

[0063] A rotating disk 52 is installed on the top of the outer cylinder 4 through a bearing seat, and the air deflector 10 is fixedly connected to the rotating disk 52 through a connecting rod 53. The air deflector 10 is an inverted cone, and the tip of the air deflector 10 is arranged at the bottom. A center hole 54 is opened at the center of the air deflector 10, and a leakage hole 55 is arranged in an annular manner on the air deflector 10. An impact guide plate 56 is inclined at the top of the air deflector 10. There are several impact guide plates 56 and they are distributed in an annular manner around the axis of the air deflector 10.

[0064] When the biogas slurry rushes into the top of the outer cylinder 4 from the liquid supply pipe 5 at high speed, it first impacts the impact guide plate 56 obliquely arranged at the top of the guide cover 10. The guide cover 10 can quickly decompose the initial impact force of the biogas slurry and can continuously adapt to the fluctuations of the biogas slurry flow rate and flow velocity. Its function is to guide the biogas slurry to be evenly dispersed into the filter cylinder 8, reduce local impact, and prevent impurities from accumulating at the entrance. Since the impact guide plate 56 is distributed in an annular shape and is inclined, the biogas slurry will change its flow direction according to its inclined surface shape. A part of the biogas slurry will quickly flow to the surroundings along the impact guide plate 56, and begin to disperse the pressure initially, so as to avoid the biogas slurry from concentrating on a certain point of the guide cover 10 and causing local damage or uneven force. At the same time, under the guidance of the impact guide plate 56, another part of the biogas slurry converges toward the central area of ​​the guide cover 10, ready to enter the next diversion process. A part of the biogas slurry that converges to the central area of ​​the guide cover 10 flows vertically downward through the central hole 54. The existence of the center hole 54 plays a role similar to that of a "drainage tube", guiding this part of the biogas slurry to rush to the center of the coarse filter 9 below in a relatively concentrated columnar water flow, ensuring that the central area of ​​the coarse filter 9 can also be fully flushed to avoid the occurrence of filtering dead corners. The leakage holes 55 distributed in an annular manner on the guide cover 10 allow another part of the biogas slurry to disperse and flow out in all directions under the action of pressure. The biogas slurry flowing out of the leakage holes 55 is combined with the biogas slurry diverted to the surrounding areas from the impact guide plate 56 to form a layer of annular downward-flowing water flow on the periphery of the guide cover 10, which fully covers the peripheral part of the coarse filter 9 and cooperates with the water flow out of the center hole 54 to achieve all-round and uniform flushing of the coarse filter 9.

[0065] Since the deflector 10 is fixedly connected to the rotating disk 52 at the top of the outer cylinder 4 through the connecting rod 53, and the rotating disk 52 is installed through the bearing seat, when the biogas slurry impacts the deflector 10 and the impact guide plate 56, due to the uneven distribution of the impact force of the water flow and the viscosity of the fluid, vortex effect and other factors, a circumferential rotation torque will be applied to the deflector 10. This rotation torque causes the deflector 10 and the rotating disk 52 to start rotating around the axis of the bearing seat, thereby driving the connecting rod 53 to rotate together. During the rotation process, the impact angles of various parts on the deflector 10 and the biogas slurry are constantly and dynamically changing, which further optimizes the dispersion effect of the biogas slurry, allowing the biogas slurry to impact the coarse filter screen 9 more evenly and efficiently, thereby improving the initial filtering effect.

[0066] The combined design of the impact guide plate 56, the center hole 54 and the leakage hole 55 realizes the precise dispersion of the biogas slurry after it enters the filter cylinder 8 from the liquid supply pipe 5. Compared with the simple diversion structure, this multi-channel and multi-angle diversion method can ensure that the biogas slurry covers the coarse filter screen 9 comprehensively and evenly, avoiding the problems of excessively fast or slow local flow velocity and uneven flushing force, so that each part of the coarse filter screen 9 can effectively intercept impurities, thereby improving the accuracy and efficiency of initial filtration.

[0067] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A biogas slurry water and fertilizer integrated drip irrigation machine, comprising a base and a main drip irrigation pipe (1) installed on the base, a plurality of sub-drip irrigation pipes (2) and a plurality of drip irrigation heads (3) evenly arranged on each sub-drip irrigation pipe (2), wherein the plurality of sub-drip irrigation pipes (2) are all connected to the main drip irrigation pipe (1), characterized in that: The invention also comprises an outer cylinder (4) arranged at the feeding end of the main drip irrigation pipe (1) and connected thereto, wherein the outer cylinder (4) is provided with a filtering mechanism, a self-cleaning mechanism and a rotating driving mechanism, wherein the outer cylinder (4) is arranged vertically, wherein the top of the outer cylinder (4) is connected to a liquid supply pipe (5) for supplying water and fertilizer, and the bottom of the outer cylinder (4) is connected to the main drip irrigation pipe (1) via a connecting pipe (6), wherein a first solenoid valve (7) is provided on the connecting pipe (6), and the filtering mechanism comprises a filtering cylinder (8) coaxially arranged in the outer cylinder (4), wherein a coarse filtering screen (9) is provided on the upper half of the filtering cylinder (8), wherein a rotatable flow guide cover (10) is provided between the top of the filtering cylinder (8) and the coarse filtering screen (9), and wherein a first scraper (10) capable of rotating to scrape off impurities is provided above the coarse filtering screen (9). 1), a partition (12) is provided in the middle of the filter cylinder (8) for dividing the filter cylinder (8) into an upper chamber and a lower chamber, a plurality of diversion holes (13) are evenly distributed on the partition (12), a self-cleaning mechanism is installed in the lower chamber, a rotary drive mechanism is installed in the outer cylinder (4), a rotatable fine filter (14) is installed on the self-cleaning mechanism, a second scraper (15) cooperating with the fine filter (14) is rotatably provided above the fine filter (14), the fine filter (14), the first scraper (11) and the second scraper (15) are all connected to the rotary drive mechanism in a transmission manner, water permeable holes (16) are evenly distributed in an annular shape on the outer side wall of the lower chamber, and a sewage discharge pipe (17) connected to the filter cylinder (8) is provided at the bottom of the outer cylinder (4).

2. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 1, characterized in that: The first scraper (11) and the second scraper (15) are provided with a locking opening and closing device at one end of the inner side wall of the filter cartridge (8). A movable sealing plate (18) is provided on the side wall of the filter cartridge (8). The movable sealing plate (18) is arranged in an arc shape and has the same arc as the filter cartridge (8). A waste discharge channel (19) is fixedly installed on the outer side wall of the filter cartridge (8). The waste discharge channel (19) is connected to the sewage discharge pipe (17). The movable sealing plate (18) is used to separate the inner side of the filter cartridge (8) and the waste discharge channel (19). The filter cartridge (8) is provided with a movable sealing plate (18). 18) is a deflected mounting groove (20), an elastic metal abutment member (21) is arranged in the mounting groove (20), the other end of the metal abutment member (21) abuts against the movable sealing plate (18), the locking opening and closing device is transmission-connected with the movable sealing plate (18), a second solenoid valve (22) and a first one-way valve (23) are arranged on the sewage discharge pipe (17), a fifth solenoid valve (24) is arranged on the waste discharge channel (19), and the waste discharge channel (19) is connected with the outer wall of the filter cartridge (8) at the height of the first scraper (11) and the second scraper (15), respectively.

3. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 2, characterized in that: The locking and opening device comprises an elastic telescopic block (25), a spring (26), an insert block (27) and a reset block (29); the reset block (29) is fixedly mounted on the inner wall of the filter cartridge (8); the elastic telescopic block (25) is fixedly mounted on the ends of the first scraper (11) and the second scraper (15); the spring (26) is arranged on the inner side of the elastic telescopic block (25); the insert block (27) is fixedly mounted on one end of the elastic telescopic block (25) close to the filter cartridge (8); a slot (28) matching the insert block (27) is provided on the movable sealing plate (18); and a contact shrinkage chamfer (30) is provided on one side of the insert block (27) that is in contact with the reset block (29).

4. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 2, characterized in that: A recoil pipe (31) is also fixedly mounted on the outer cylinder (4), one end of the recoil pipe (31) is connected to a flushing water source, and the other end of the recoil pipe (31) is divided into two joints, the two joints are respectively connected to the upper chamber and the lower chamber of the filter cylinder (8), and the connection positions are respectively located below the coarse filter screen (9) and below the fine filter screen (14), a third solenoid valve (32) is provided on the liquid supply pipe (5), and a fourth solenoid valve (33) is provided on the recoil pipe (31).

5. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 1, characterized in that: A rotatable annular rotating frame (34) is provided in the filter cartridge (8), the annular rotating frame (34) is fixedly connected to the fine filter screen (14), the annular rotating frame (34) is transmission-connected to a rotary drive mechanism, and a limiting ring is provided in the filter cartridge (8), the limiting ring being arranged at the upper and lower ends of the annular rotating frame (34).

6. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 5, characterized in that: The rotary drive mechanism comprises a first rotating shaft (35) vertically rotatably arranged on the outer cylinder (4); an isolation chamber is arranged at the bottom of the outer cylinder (4); a rotary drive (36) is arranged in the isolation chamber; an output end of the rotary drive (36) is fixedly connected to one end of the first rotating shaft (35); a first driving gear (37) is fixedly arranged on the first rotating shaft (35); a first ring gear (38) is fixedly arranged on the annular rotating frame (34); the first driving gear (37) and the first ring gear (38) are at the same height; the first driving gear (37) and the first ring gear (38) are meshed; a first partition mounting frame (39) is arranged on the outer side wall of the filter cylinder (8); the first partition mounting frame (39) is communicated with the inside of the filter cylinder (8); and the first driving gear (37) is located in the first partition mounting frame (39).

7. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 6, characterized in that: The rotary drive mechanism further comprises a reducer (40), a sealing mounting frame (41), a second rotating shaft (42), a third rotating shaft (43) and a synchronous rotation device. The sealing mounting frame (41) is fixedly mounted on the outer wall of the filter cartridge (8). The reducer (40) is fixedly mounted in the sealing mounting frame (41). An end of the first rotating shaft (35) away from the rotary driver (36) is transmission-connected to the reducer (40). The second rotating shaft (42) is vertically rotationally mounted in the outer cartridge (4). The second rotating shaft (42) is transmission-connected to the output end of the reducer (40). The third rotating shaft (43) is coaxially arranged with the filter cartridge (8). The third rotating shaft (43) is located in the upper chamber of the filter cartridge (8). The third rotating shaft (43) is transmission-connected to the second rotating shaft (42) through the synchronous rotation device. The first scraper (11) is fixedly connected to the third rotating shaft (43).

8. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 7, characterized in that: The synchronous rotation device comprises a first rotating mounting frame (44), a third partition mounting frame (45) and a second driving gear (46); the first rotating mounting frame (44) is coaxially rotatably arranged in the upper chamber of the filter cartridge (8); the first rotating mounting frame (44) is fixedly connected to the top end of the third rotating shaft (43); a second ring gear (47) is arranged on the outer side wall of the first rotating mounting frame (44); the third partition mounting frame (45) is communicated with the inside of the filter cartridge (8); the second driving gear (46) is installed in the third partition mounting frame (45) and meshes with the second ring gear (47); and the second driving gear (46) is connected to the second rotating shaft (42) through a synchronous belt transmission.

9. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 8, characterized in that: The synchronous rotation device also includes a second rotating mounting frame (48) and a fourth rotating shaft (49) coaxially arranged with the filter cartridge (8); the top of the fourth rotating shaft (49) is fixedly connected to the second rotating mounting frame (48); the second scraper (15) is fixedly mounted on the fourth rotating shaft (49); a second partition mounting frame (57) connected to the filter cartridge (8) is arranged above the first partition mounting frame (39); a third driving gear (50) is arranged in the second partition mounting frame (57); a third ring gear (51) is arranged on the second rotating mounting frame (48); the third ring gear (51) is meshed with the third driving gear (50); and the second rotating shaft (42) is transmission-connected to the third driving gear (50) via a synchronous belt.

10. The biogas slurry water and fertilizer integrated drip irrigation machine according to claim 1, characterized in that: A rotating disk (52) is installed on the top of the outer cylinder (4) through a bearing seat, and the air deflector (10) is fixedly connected to the rotating disk (52) through a connecting rod (53). The air deflector (10) is an inverted cone shape, and the tip of the air deflector (10) is arranged at the bottom. A center hole (54) is opened at the center of the air deflector (10), and a material leakage hole (55) is annularly arranged on the air deflector (10). An impact guide plate (56) is obliquely arranged on the top of the air deflector (10), and a plurality of impact guide plates (56) are provided and are annularly distributed around the axis of the air deflector (10).

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