Biogas slurry aeration drip irrigation water and fertilizer integrated equipment

Abstract

The invention relates to the technical field of biogas slurry drip irrigation and fertilization, and discloses biogas slurry aeration drip irrigation water and fertilizer integrated equipment which comprises a vehicle body mounted at the tail end of advancing equipment; the filtering assembly comprises a filtering tank, a box body and a filtering part, the box body is detachably connected into the filtering tank, and the filtering part is arranged in the box body, is used for filtering impurities and oil stains in the biogas slurry and is configured to clean the impurities and the oil stains filtered by the filtering part by disassembling the box body; the driving assembly is arranged on the filtering tank, and when the box body is mounted in the filtering tank, the driving assembly is in transmission connection with the filtering part; the mixing assembly comprises a mixing tank and a mixing part, the mixing tank is fixedly connected to the top end of the vehicle body and communicated with the filtering tank through a pipeline, the mixing part is arranged in the mixing tank and used for mixing biogas slurry and fertilizer, and a drip irrigation head is arranged on the mixing tank and used for drip irrigation of water and fertilizer. Efficient filtration of biogas slurry and preparation of biogas slurry water fertilizer are realized, equipment blockage is avoided, stable drip irrigation is guaranteed, blockage is avoided, and cleaning is facilitated.

Description

Technical Field

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

[0002] Biogas slurry is a liquid formed by the fermentation of organic matter. It contains various chlorogenic acids, vitamins, proteins, growth hormones, sugars, nucleic acids and antibiotics. Therefore, biogas slurry is often made into biogas slurry compound microbial fertilizer for use in agricultural production.

[0003] Since the biogas slurry contains a large amount of impurities and oil, directly mixing it with fertilizers can easily lead to the mixed water and fertilizer clogging the drip irrigation head due to the large amount of impurities during the drip irrigation process, thereby affecting the overall drip irrigation efficiency. In order to achieve the stability of its drip irrigation in the prior art, the impurities in the biogas slurry are usually filtered through a filter, but the filtering effect is not ideal. After the filtration is completed, a large number of tiny impurities are still present, and the filtration treatment of the oil cannot be achieved. The subsequent mixed fertilizer still has the disadvantage of clogging the drip irrigation head, and the filter is easily caught by impurities during the filtration process, causing the filter to be blocked, affecting the overall filtration efficiency.

[0004] Therefore, there is an urgent need for a biogas slurry aeration drip irrigation water and fertilizer integrated equipment to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a biogas slurry aeration drip irrigation water and fertilizer integrated equipment to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a biogas slurry aeration drip irrigation water and fertilizer integrated equipment, comprising:

[0007] The vehicle body is mounted at the rear end of the traveling equipment;

[0008] A filter assembly, comprising a filter tank, a box and a filter element, wherein the box is detachably connected to the filter tank, the filter element is arranged in the box to filter impurities and oil in the biogas slurry, and is configured to clean the impurities and oil filtered by the filter element by disassembling the box;

[0009] A driving assembly is arranged on the filter tank, and when the box is installed in the filter tank, the driving assembly is in driving connection with the filter element;

[0010] The mixing assembly comprises a mixing tank and a mixing element. The mixing tank is fixedly connected to the top of the vehicle body and communicated with the filter tank through a pipeline. The mixing element is arranged in the mixing tank for mixing biogas slurry and fertilizer. The mixing tank is provided with a drip irrigation head for drip irrigation of water and fertilizer.

[0011] According to the biogas slurry aeration drip irrigation water and fertilizer integrated equipment provided by the present invention, the filter element comprises:

[0012] A filter plate, wherein a through hole is provided in the middle of the box body, and the filter plate is fixedly connected to the top of the through hole to filter impurities in the biogas slurry;

[0013] A filter screen is fixedly connected to the bottom of the through hole and is used to filter oil in the biogas slurry;

[0014] A rotating shaft is rotatably connected to the filter plate and the middle of the filter screen, and two cleaning scrapers are fixedly connected to the rotating shaft, and the two cleaning scrapers are in sliding contact with the top of the filter plate and the top of the filter screen respectively;

[0015] The graded filtering and cleaning component is arranged on the rotating shaft and is used for graded filtering and cleaning the filter plate.

[0016] According to the biogas slurry aeration drip irrigation water and fertilizer integrated equipment provided by the present invention, the graded filtering and cleaning component comprises:

[0017] A support ring is sleeved on the rotating shaft and fixedly connected to the bottom of the filter plate. A plurality of support frames are circumferentially arranged on the support ring. A plurality of filter columns are axially fixedly connected to the support frames. A plurality of filter holes are opened on the filter plate. The filter columns are matched with the filter holes.

[0018] The toggle plate is fixedly connected to the rotating shaft and is configured to drive the supporting frame to move upward when the toggle plate is rotated to below the supporting frame so that the filter column extends into the filter hole.

[0019] According to a biogas slurry aeration drip irrigation water and fertilizer integrated equipment provided by the present invention, a filter layer is fixedly connected to the top of the filter column, and is configured so that when the filter column extends into the filter hole, the top of the filter layer and the top of the filter plate are located on the same horizontal plane.

[0020] According to a biogas slurry aeration drip irrigation and water-fertilizer integrated equipment provided by the present invention, a plurality of slide grooves are circumferentially provided on the inner wall of the through hole and the outer wall of the support ring, a round rod is fixedly connected in the slide groove, sliders are fixedly connected at both ends of the support frame, the sliders are slidably connected to the round rod, a first spring is sleeved on the round rod, and the two ends of the first spring are fixedly connected to the slider and the inner wall of the slide groove respectively.

[0021] According to a biogas slurry aeration drip irrigation water and fertilizer integrated equipment provided by the present invention, the driving component comprises:

[0022] A drive shaft is rotatably connected to the top of the filter tank, a motor is fixedly connected to the top of the filter tank, and a top of the drive shaft extends out of the filter tank and is fixedly connected to an output shaft of the motor;

[0023] The telescopic shaft is slidably sleeved on the driving shaft through a side key and connected to the driving shaft through a second spring. A rectangular block is fixedly connected to the bottom end of the telescopic shaft, and a rectangular hole is opened at the top end of the rotating shaft. The rectangular block is adapted to the rectangular hole.

[0024] According to a biogas slurry aeration drip irrigation and water-fertilizer integrated equipment provided by the present invention, grooves are provided on the top and bottom of the box body, a sliding frame is slidably connected in the groove, a sealing plate is hinged on the sliding frame, and is configured to be bent upward / downward and installed on the filter tank by bolts when the sealing plate slides out of the box body.

[0025] According to a biogas slurry aeration drip irrigation water-fertilizer integrated equipment provided by the present invention, the mixing element includes a stirring device installed in the mixing tank, a storage tank is fixedly connected to the top of the mixing tank, fertilizer is stored in the storage tank and is connected to the mixing tank, an aeration device is installed on the mixing tank, and the output end of the aeration device is connected to the mixing tank.

[0026] According to the biogas slurry aeration drip irrigation water-fertilizer integrated equipment provided by the present invention, one end of a plurality of toggle rods is fixedly connected to the telescopic shaft, and the other end of the toggle rods is in contact with the sealing plate.

[0027] According to the biogas slurry aeration drip irrigation water and fertilizer integrated equipment provided by the present invention, the filter plate and the filter net are truncated cone structures.

[0028] Compared with the prior art, the present invention has the following advantages and technical effects:

[0029] The present invention provides a biogas slurry aeration drip irrigation water and fertilizer integrated equipment, the vehicle body is driven to move by a traveling device, the box body is installed in a filter tank, the biogas slurry is transported to the filter tank and filtered for impurities and oil through a set filter element, the filtered biogas slurry is transported to a mixing tank, aerated through a set mixer and mixed with fertilizer to prepare biogas slurry water and fertilizer, and water and fertilizer are drip-irrigated through a drip irrigation head after preparation, and as the filtering process proceeds, the box body is disassembled and cleaned after the filtering is completed. The present application realizes efficient filtration of biogas slurry and water and fertilizer preparation of biogas slurry, avoids blockage of the overall equipment, ensures stable drip irrigation of biogas slurry water and fertilizer, and avoids blockage, which is easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle part;

[0033] Figure 3 For the present invention Figure 1 A partial enlarged view of point B in the middle;

[0034] Figure 4 For the present invention Figure 1 A partial enlarged view of point C in the middle;

[0035] Figure 5 This is a schematic diagram of the filter structure of the present invention;

[0036] Among them, 1. body; 2. filter tank; 3. mixing tank; 4. box; 5. pipeline; 6. drip irrigation head; 7. filter plate; 8. filter screen; 9. rotating shaft; 10. cleaning scraper; 11. support ring; 12. support frame; 13. filter column; 14. filter hole; 15. toggle plate; 16. filter layer; 17. slide groove; 18. round rod; 19. slider; 20. first spring; 21. drive shaft; 22. motor; 23. telescopic shaft; 24. second spring; 25. rectangular block; 26. rectangular hole; 27. groove; 28. sliding frame; 29. ​​sealing plate; 30. bolt; 31. stirring device; 32. storage tank; 33. aeration device; 34. toggle rod. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] In the related art, the existing biogas slurry aeration drip irrigation water and fertilizer system includes a mobile base, a push rod is fixedly connected to the upper end of the mobile base, a processing mechanism for processing biogas slurry is provided on the mobile base, the processing mechanism includes a biogas slurry tank fixedly connected to the upper end of the mobile base, a first water pump and an aeration fan are fixedly connected to the upper end of the mobile base, a dilution box is fixedly connected to the upper end of the mobile base, and a box cover is provided on the dilution box. Through the processing mechanism, the biogas slurry aeration drip irrigation is concentrated in one body, the device is small in size, and does not need to be fertilized through a large-scale biogas slurry drip irrigation fertilization system, thereby reducing the production cost caused by fertilization, and a filtering mechanism and a cleaning plate are provided. The rotation of the cleaning plate can prevent impurities from clogging the mesh of the first filter, thereby ensuring the filtering efficiency of impurities.

[0040] In the above-mentioned related technologies, although filtering of the filter can be achieved, it only cleans the impurities on the surface of the filter through a cleaning plate, and cannot remove the impurities stuck in the mesh of the filter, thereby being unable to avoid clogging of the filter, affecting subsequent filtering efficiency.

[0041] In view of the problems existing in the above-mentioned prior art, the present invention provides a biogas slurry aeration drip irrigation water and fertilizer integrated equipment:

[0042] Reference Figure 1-Figure 5 The present invention provides a biogas slurry aeration drip irrigation water and fertilizer integrated equipment, comprising:

[0043] Vehicle body 1, mounted at the rear end of the traveling equipment;

[0044] The filter assembly comprises a filter tank 2, a box body 4 and a filter element, wherein the box body 4 is detachably connected to the filter tank 2, and the filter element is arranged in the box body 4 for filtering impurities and oil in the biogas slurry, and is configured to clean the impurities and oil filtered by the filter element by disassembling the box body 4;

[0045] The driving assembly is arranged on the filter tank 2. When the box body 4 is installed in the filter tank 2, the driving assembly is in driving connection with the filter element;

[0046] The mixing assembly includes a mixing tank 3 and a mixing element. The mixing tank 3 is fixedly connected to the top of the vehicle body 1 and is connected to the filter tank 2 through a pipe 5. The mixing element is arranged in the mixing tank 3 for mixing biogas slurry and fertilizer. The mixing tank 3 is provided with a drip irrigation head 6 for drip irrigation of water and fertilizer.

[0047] In one embodiment of the present invention, the vehicle body 1 is driven to move by a traveling device, and the box 4 is installed in the filter tank 2. The biogas slurry is transported to the filter tank 2 to filter impurities and oil stains through the provided filter element, and the filtered biogas slurry is transported to the mixing tank 3, aerated by the provided mixing element and then stirred and mixed with fertilizer to prepare biogas slurry water fertilizer, which is then drip-irrigated through the drip irrigation head 6 after preparation. At the same time, as the filtering process proceeds, the box 4 is disassembled and cleaned after the filtering is completed.

[0048] As an optional embodiment, the filter element includes:

[0049] A filter plate 7 is provided with a through hole in the middle of the box body 4, and the filter plate 7 is fixedly connected to the top of the through hole to filter impurities in the biogas slurry;

[0050] A filter screen 8 is fixedly connected to the bottom of the through hole and is used to filter oil in the biogas slurry;

[0051] A rotating shaft 9 is rotatably connected to the middle of the filter plate 7 and the filter screen 8. Two cleaning scrapers 10 are fixedly connected to the rotating shaft 9. The two cleaning scrapers 10 are in sliding contact with the top of the filter plate 7 and the top of the filter screen 8 respectively.

[0052] The graded filtering and cleaning component is arranged on the rotating shaft 9 and is used for graded filtering and cleaning the filter plate 7 .

[0053] In one embodiment of the present invention, referring to Figure 1 The filter plate 7 is used to initially filter impurities in the biogas slurry, and then the oil in the biogas slurry is filtered through the filter net 9 to obtain biogas slurry. At the same time, the filter net 8 and the filter plate 7 are cleaned by the cleaning scraper 10 to ensure the overall filtering efficiency.

[0054] As an optional embodiment, the graded filtering and cleaning component includes:

[0055] A support ring 11 is sleeved on the rotating shaft 9 and fixedly connected to the bottom of the filter plate 7. A plurality of support frames 12 are circumferentially arranged on the support ring 11. A plurality of filter columns 13 are axially fixedly connected to the support frames 12. A plurality of filter holes 14 are opened on the filter plate 7. The filter columns 13 are adapted to the filter holes 14.

[0056] The toggle plate 15 is fixedly connected to the rotating shaft 9 , and is configured to drive the supporting frame 12 to move upwards when the toggle plate 15 rotates to below the supporting frame 12 so that the filter column 13 extends into the filter hole 14 .

[0057] In one embodiment of the present invention, referring to Figure 3 The support ring 11 is fixed under the filter plate 7, the support frame 12 is located under the filter plate 7 and makes the filter column 13 correspond to the filter hole 14. When the rotating shaft 9 drives the toggle plate 15 to rotate, the toggle plate 15 contacts the support frame 12 in sequence, lifts the support frame 12 so that the filter column 13 extends into the filter hole 14, and pushes out the filter material in the filter hole 14 to achieve cleaning.

[0058] Specifically, the toggle plate 15 may be provided with an inclined surface for lifting the support frame 12 .

[0059] As an optional embodiment, a filter layer 16 is fixedly connected to the top of the filter column 13 , and is configured so that when the filter column 13 extends into the filter hole 14 , the top of the filter layer 16 and the top of the filter plate 7 are located on the same horizontal plane.

[0060] In one embodiment of the present invention, referring to Figure 3 The filtration aperture of the filter layer 16 is smaller than that of the filter hole 14, so that the two can filter impurities of different particle sizes respectively, thereby achieving graded filtration of biogas slurry impurities and ensuring the overall filtration effect.

[0061] As an optional embodiment, a plurality of slide grooves 17 are circumferentially provided on the inner wall of the through hole and the outer wall of the support ring 11, a round rod 18 is fixedly connected in the slide groove 17, sliders 19 are fixedly connected at both ends of the support frame 12, the sliders 19 are slidably connected to the round rod 18, a first spring 20 is sleeved on the round rod 18, and the two ends of the first spring 20 are fixedly connected to the slider 19 and the inner wall of the slide groove 17, respectively.

[0062] In one embodiment of the present invention, referring to Figure 3 The first spring 20 is provided to ensure the reset of the support frame 12 .

[0063] As an optional implementation, the driving component includes:

[0064] The driving shaft 21 is rotatably connected to the top of the filter tank 2, the top of the filter tank 2 is fixedly connected to the motor 22, and the top of the driving shaft 21 extends out of the filter tank 2 and is fixedly connected to the output shaft of the motor 22;

[0065] The telescopic shaft 23 is slidably mounted on the driving shaft 21 through a side key and connected to the driving shaft 21 through a second spring 24. A rectangular block 25 is fixedly connected to the bottom end of the telescopic shaft 23. A rectangular hole 26 is opened at the top end of the rotating shaft 9, and the rectangular block 25 is adapted to the rectangular hole 26.

[0066] In one embodiment of the present invention, referring to Figure 2 The telescopic shaft 23 is extended and retracted by the second spring 24, ensuring that the rotating shaft 9 can be driven to rotate stably and the two can also be separated.

[0067] As an optional embodiment, grooves 27 are provided at the top and bottom of the box body 4, a sliding frame 28 is slidably connected in the groove 27, a sealing plate 29 is hinged on the sliding frame 28, and is configured to be bent upward / downward and installed on the filter tank 2 by bolts 30 when the sealing plate 29 slides out of the box body 4.

[0068] In one embodiment of the present invention, referring to Figure 1 , Figure 4When the box body 4 is installed in the filter tank 2, the sealing plate 29 is pulled out, and after being pulled out to a certain length, it is rotated at its hinge point, and the upper and lower sealing plates 29 are installed on the filter tank 2, so as to realize the convenient installation and disassembly of the box body 4 and the filter tank 2. At the same time, the filtering position can be sealed during disassembly to reduce the disadvantage of exposing the biogas slurry residue.

[0069] As an optional embodiment, the mixing element includes a stirring device 31 installed in a mixing tank 3, a storage tank 32 is fixedly connected to the top of the mixing tank 3, fertilizer is stored in the storage tank 32 and is connected to the mixing tank 3, an aeration device 33 is installed on the mixing tank 3, and the output end of the aeration device 33 is connected to the mixing tank 3.

[0070] In one embodiment of the present invention, referring to Figure 1 The biogas slurry is aerated by the aeration device 33 , and the biogas slurry and fertilizer in the mixing tank 3 are mixed and stirred by the stirring device 31 .

[0071] As an optional implementation, one end of a plurality of toggle rods 34 is fixedly connected to the telescopic shaft 23 , and the other end of the toggle rods 34 is in contact with the sealing plate 29 .

[0072] In one embodiment of the present invention, referring to Figure 2 A plurality of toggle rods 34 are distributed circumferentially on the telescopic shaft 23. When the sealing plate 29 seals the box body 4, the sliding sealing plate 29 first contacts the toggle rod 34, and the toggle rod 34 is driven to move upward by contacting the sealing plate 29, thereby driving the telescopic shaft 23 to be retracted upward and separated from the rotating shaft 9, thereby realizing the sealing of the box body 4 by the sealing plate 29. Conversely, after the box body 4 is installed, when the sealing plate 29 is pulled out, the telescopic shaft 23 is connected to the rotating shaft 9.

[0073] Specifically, one end of the sliding frame 28 can be set as an inclined structure to lift the toggle rod 34.

[0074] As an optional implementation, the filter plate 7 and the filter screen 8 are truncated cone structures.

[0075] In one embodiment of the present invention, referring to Figure 1 The filter plate 7 and the filter screen 8 are both truncated cone structures, which further ensure the filtering efficiency and avoid the accumulation of impurities and oil.

[0076] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0077] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A biogas slurry aeration drip irrigation water and fertilizer integrated equipment, characterized in that: include: The vehicle body (1) is mounted on the rear end of the traveling equipment; A filter assembly, comprising a filter tank (2), a box (4) and a filter element, wherein the box (4) is detachably connected to the filter tank (2), the filter element is arranged in the box (4) for filtering impurities and oil in biogas slurry, and is configured to clean the impurities and oil filtered by the filter element by disassembling the box (4); A drive assembly is arranged on the filter tank (2), and when the box body (4) is installed in the filter tank (2), the drive assembly is in driving connection with the filter element; A mixing assembly comprises a mixing tank (3) and a mixing element, wherein the mixing tank (3) is fixedly connected to the top of the vehicle body (1) and is connected to the filter tank (2) via a pipeline (5), the mixing element is arranged in the mixing tank (3) for mixing biogas slurry and fertilizer, and the mixing tank (3) is provided with a drip irrigation head (6) for drip irrigation of water and fertilizer.

2. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 1, characterized in that: The filter element comprises: A filter plate (7), wherein a through hole is provided in the middle of the box body (4), and the filter plate (7) is fixedly connected to the top of the through hole and is used to filter impurities in the biogas slurry; A filter screen (8) is fixedly connected to the bottom of the through hole and is used to filter oil in the biogas slurry; A rotating shaft (9) is rotatably connected to the middle of the filter plate (7) and the filter screen (8), and two cleaning scrapers (10) are fixedly connected to the rotating shaft (9), and the two cleaning scrapers (10) are in sliding contact with the top of the filter plate (7) and the top of the filter screen (8) respectively; A graded filtering and cleaning component is arranged on the rotating shaft (9) and is used for graded filtering and cleaning the filter plate (7).

3. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 2, characterized in that: The graded filtering and cleaning part comprises: A support ring (11) is sleeved on the rotating shaft (9) and fixedly connected to the bottom of the filter plate (7); a plurality of support frames (12) are circumferentially arranged on the support ring (11); a plurality of filter columns (13) are axially fixedly connected to the support frames (12); a plurality of filter holes (14) are opened on the filter plate (7); and the filter columns (13) are adapted to the filter holes (14); The toggle plate (15) is fixedly connected to the rotating shaft (9) and is configured to drive the support frame (12) to move upward when the toggle plate (15) is rotated to below the support frame (12), so that the filter column (13) extends into the filter hole (14).

4. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 3, characterized in that: The top end of the filter column (13) is fixedly connected to a filter layer (16), and is configured such that when the filter column (13) extends into the filter hole (14), the top end of the filter layer (16) and the top end of the filter plate (7) are located on the same horizontal plane.

5. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 3, characterized in that: A plurality of slide grooves (17) are provided on the inner side wall of the through hole and the outer side wall of the support ring (11) along the circumferential direction, a round rod (18) is fixedly connected in the slide groove (17), two ends of the support frame (12) are respectively fixedly connected with sliders (19), the sliders (19) are slidably connected to the round rod (18), a first spring (20) is sleeved on the round rod (18), and two ends of the first spring (20) are respectively fixedly connected to the slider (19) and the inner wall of the slide groove (17).

6. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 2, characterized in that: The drive assembly comprises: A drive shaft (21) is rotatably connected to the top of the filter tank (2), the top of the filter tank (2) is fixedly connected to a motor (22), and the top of the drive shaft (21) extends out of the filter tank (2) and is fixedly connected to the output shaft of the motor (22); The telescopic shaft (23) is slidably mounted on the driving shaft (21) via a side key and is connected to the driving shaft (21) via a second spring (24). A rectangular block (25) is fixedly connected to the bottom end of the telescopic shaft (23). A rectangular hole (26) is formed at the top end of the rotating shaft (9), and the rectangular block (25) is adapted to fit the rectangular hole (26).

7. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 6, characterized in that: The top and bottom of the box body (4) are both provided with grooves (27), a sliding frame (28) is slidably connected in the groove (27), a sealing plate (29) is hinged on the sliding frame (28), and the sealing plate (29) is configured to be bent upward / downward when sliding out of the box body (4) and to be installed on the filter tank (2) by bolts (30).

8. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 1, characterized in that: The mixing element comprises a stirring device (31) installed in the mixing tank (3); a storage tank (32) is fixedly connected to the top of the mixing tank (3); fertilizer is stored in the storage tank (32) and is connected to the mixing tank (3); an aeration device (33) is installed on the mixing tank (3); and an output end of the aeration device (33) is connected to the mixing tank (3).

9. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 7, characterized in that: One end of a plurality of toggle rods (34) is fixedly connected to the telescopic shaft (23), and the other end of the toggle rods (34) is in contact with the sealing plate (29).

10. The biogas slurry aeration drip irrigation water and fertilizer integrated equipment according to claim 2, characterized in that: The filter plate (7) and the filter screen (8) are truncated cone structures.

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