Liquid fertilizer applicator

Abstract

The invention discloses a liquid fertilizer applicator comprising a water quality filtering device, a solid fertilizer to liquid fertilizer conversion device, a liquid fertilizer tank and a pumping device. The water quality filtering device comprises a cyclone sand settling device and a filter. The solid fertilizer to liquid fertilizer conversion device comprises a solid fertilizer dissolving tank, a first delivery pump and a screen filter. The pumping device comprises a venturi fertilizer suction device and / or a fertilizer injection pump. The scheme optimizes the water source configuration mode. When a set of water quality filtering devices is adopted, three fertilization modes of liquid fertilizer fertilization, solid fertilizer fertilization and liquid fertilizer plus solid fertilizer are provided, thereby reducing the number of fertilizer applicator equipment, thereby improving the convenience of fertilization operation and reducing the fertilization cost.

Description

Technical Field

[0001] The invention relates to water-fertilizer integrated equipment, in particular to a liquid fertilizer applicator. Background Art

[0002] Fertilization of crop planting is generally divided into three stages: 1. base fertilizer, 2. seed fertilizer, and 3. topdressing. Topdressing is a measure of fertilization based on the nutrient requirements of crops at different growth stages. Usually, inorganic fertilizers are used as the main fertilizer. In the past, the method of topdressing was basically to spread fertilizer. Although this method is simple and easy, it has the problems of large workload, uneven spreading, low waste utilization, poor economic benefits and inconvenient operation. In recent years, due to the continuous development of drip irrigation and micro-irrigation technology, water-fertilizer integration technology has been rapidly developed and promoted.

[0003] Liquid fertilizers generally contain biological agents and complex substances. The effective ingredients are easily absorbed, which improves the utilization rate of fertilizers and is beneficial to soil restoration and fertility cultivation. The use of liquid fertilizers is the development trend of water-fertilizer integration.

[0004] For example, patent document CN202020089072.9 discloses a water-fertilizer integrated intelligent irrigation control system, which includes a water source, and a pipe extending from the water source is connected to a centrifugal filter, a gravel filter, and a butterfly filter in sequence; a pipe extending from the butterfly filter is connected to a fertilizer proportioning tank, and the fertilizer proportioning tank is connected to an intelligent fertilizer applicator through a pump and a pipe. The water-fertilizer integrated irrigation equipment system provides a solution for irrigation and fertilization of field crops, and also promotes the development of domestic agriculture.

[0005] Although this scheme provides an integrated water-fertilizer solution, it is also unable to carry out simultaneous topdressing of solid fertilizer and liquid fertilizer. When solid fertilizer is needed, an additional fertilization system is required, which is inconvenient to operate. In addition, the configuration of the system water source has room for further optimization. Therefore, a new type of liquid fertilizer applicator is born. Summary of the invention

[0006] In view of the above problems, the present invention provides a liquid fertilizer applicator.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A liquid fertilizer applicator comprises a water quality filtering device, a solid fertilizer conversion device, a liquid fertilizer tank and a pumping device, wherein a fertilizer inlet is provided on the top of the liquid fertilizer tank;

[0009] The water quality filtering device comprises a cyclone sand settling device and a filter, the water inlet end of the cyclone sand settling device is connected to the water source through a first pipeline, a water pump and a first check valve are arranged on the first pipeline, the water outlet end of the cyclone sand settling device is connected to a second pipeline, the filter is arranged on the second pipeline, an exhaust valve is arranged on the second pipeline, and a cross-way is arranged on the water outlet end of the second pipeline;

[0010] The solid fertilizer to liquid fertilizer device comprises a solid fertilizer dissolving tank, a first delivery pump and a screen filter; the solid fertilizer dissolving tank has a feed inlet, a water inlet and a liquid outlet, and a stirring mechanism is arranged in the solid fertilizer dissolving tank; the screen filter comprises a base, which is a trough-shaped body with an opening on one side, and comprises a bottom arm, a first side wall, a second side wall and a third side wall, and the bottom arm is defined by a first straight arm, a vertical arm and a second straight arm, wherein a fertilizer outlet is arranged on the first straight arm, a slag outlet is arranged on the second straight arm, a slag outlet is connected to the lower part of the slag outlet, and a slag discharge box is arranged between the second side wall and the third side wall. The pivot is provided with two rollers, one of which is arranged above the second straight arm, and an annular screen is arranged between the two rollers; the water inlet is connected to the cross-way through the ninth pipeline, and a shut-off valve is arranged on the ninth pipeline; the liquid outlet is connected to the water inlet of the first delivery pump through the third pipeline, and a shut-off valve is arranged on the third pipeline; the water outlet of the first delivery pump is connected to the fourth pipeline, and the water outlet end of the fourth pipeline is arranged above the screen; the fertilizer outlet is connected to the liquid fertilizer tank through the fifth pipeline, and the second delivery pump and the second check valve are arranged on the fifth pipeline;

[0011] The pumping device comprises a venturi fertilizer suction device and / or a fertilizer injection pump, wherein the venturi fertilizer suction device capillary is connected to the liquid fertilizer tank, the water inlet end of the venturi fertilizer suction device is connected to the cross-connection through the sixth pipeline, the water outlet end is connected to the water inlet of the fertilizer injection pump, the water outlet end of the fertilizer injection pump is connected to the field fertilization pipe through the seventh pipeline, and the sixth pipeline is provided with a shutoff valve and a third check valve;

[0012] The liquid fertilizer applicator also comprises an eighth pipeline, and the eighth pipeline is connected with the four-way pipe and the field fertilization pipe.

[0013] Furthermore, in the above-mentioned liquid fertilizer applicator, the second pipeline and the fourth pipeline are provided with pressure gauges, and the seventh pipeline is provided with a pressure gauge and a flow meter.

[0014] Furthermore, in the above-mentioned liquid fertilizer applicator, the filter is a disc filter.

[0015] Furthermore, in the above-mentioned liquid fertilizer applicator, the water pump, the second delivery pump and the fertilizer injection pump are centrifugal pumps or vane pumps, and the first delivery pump is a screw pump or a plunger pump.

[0016] Furthermore, in the above-mentioned liquid fertilizer applicator, the liquid fertilizer tank is made of plastic material.

[0017] The beneficial effect of the solution provided by the embodiment of the present invention is that the fertilizer applicator can use liquid fertilizer or solid fertilizer or a mixture of liquid and solid fertilizer for fertilization, and the liquid fertilizer, solid fertilizer and drip irrigation water source use the same set of water quality filtration devices. While providing multiple fertilization modes, it optimizes the water source configuration and reduces the number of fertilizer applicator equipment, thereby improving the convenience of fertilization operations and reducing fertilization costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the liquid fertilizer applicator of the present invention;

[0019] Figure 2 A stereogram of the abutment;

[0020] Figure 3 A top view of the filter.

[0021] The reference numerals in the drawings of the specification include: liquid fertilizer tank 1, fertilizer inlet 1a, cyclone sand settling device 2, filter 3, first pipeline 4, water pump 40, first check valve 41, second pipeline 5, exhaust valve 6, cross 7, solid fertilizer dissolving tank 8, feed inlet 80, water inlet 81, liquid outlet 82, rotating shaft 83, spiral stirring blade 84, motor 85, first delivery pump 9, filter 10, base 100, first straight arm 100a-1, vertical arm 100a-2, second straight arm 100a-3, first side wall 100b, second side wall 100c, third side wall 100d, fertilizer outlet 11, slag outlet 12, slag discharge box 13, drum 14, screen 15, third pipeline 16, fourth pipeline 17, fifth pipeline 18, second delivery pump 19, second check valve 20, Venturi fertilizer suction device 21, fertilizer injection pump 22, sixth pipeline 23, seventh pipeline 24, eighth pipeline 26, third check valve 27, pressure gauge 28, flow meter 29, shut-off valve a 30, shut-off valve c 32, shut-off valve d 33, ninth pipeline 34. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the present invention clearer, the specific implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Example 1

[0024] like Figure 1 to Figure 3 As shown, the present invention provides a liquid fertilizer applicator, which is mainly composed of a water quality filtering device, a solid fertilizer to liquid fertilizer device, a liquid fertilizer tank 1 and a pumping device, wherein a fertilizer inlet 1a is provided on the top of the liquid fertilizer tank 1;

[0025] The water quality filtering device comprises a cyclone sand settling device 2 and a filter 3. The filter 3 is, for example, a disc filter 3. The water inlet end of the cyclone sand settling device 2 is connected to a water source through a first pipeline 4. A water pump 40 and a first check valve 41 are provided on the first pipeline 4. The water outlet end of the cyclone sand settling device 2 is connected to a second pipeline 5. The filter 3 is provided on the second pipeline 5. An exhaust valve 6 is provided on the second pipeline 5. A cross-connection 7 is provided on the water outlet end of the second pipeline 5.

[0026] The solid fertilizer to liquid fertilizer device comprises a solid fertilizer dissolving tank 8, a first delivery pump 9 and a filter 10; the solid fertilizer dissolving tank 8 has a feed port 80, a water inlet 81 and a liquid outlet 82, and a stirring mechanism is arranged in the solid fertilizer dissolving tank 8. The specific stirring mechanism comprises a rotating shaft 83 arranged in the solid fertilizer dissolving tank 8, and a spiral stirring blade 84 is arranged on the rotating shaft 83. A motor 85 is arranged on the top of the solid fertilizer dissolving tank 8, and the output shaft of the motor 85 is driven by the rotating shaft 83 through a gear transmission mechanism. Figure 1 The bevel gear transmission is specifically illustrated in the figure; the filter 10 comprises a base 100, which is a trough-shaped body with an opening on one side, and comprises a bottom arm, a first side wall 100b, a second side wall 100c and a third side wall 100d; Figure 2 As shown, the bottom arm is defined by a first straight arm 100a-1, a vertical arm 100a-2 and a second straight arm 100a-3, a fertilizer outlet 11 is opened on the first straight arm 100a-1, a slag outlet 12 is opened on the second straight arm 100a-3, a slag discharge box 13 is connected to the lower part of the slag outlet 12, two rollers 14 are pivotally arranged between the second side wall 100c and the third side wall 100d, one of the rollers 14 is arranged above the second straight arm 100a-3, and an annular screen 15 is arranged between the two rollers 14; The water inlet 81 is connected to the cross-way 7 through the ninth pipeline 34, and the ninth pipeline 34 is provided with a shutoff valve d33. The liquid outlet 82 is connected to the water inlet of the first delivery pump 9 through the third pipeline 16, and the third pipeline 16 is provided with a shutoff valve a30. The water outlet of the first delivery pump 9 is connected to the fourth pipeline 17, and the water outlet end of the fourth pipeline 17 is placed above the screen 15. The fertilizer outlet 11 is connected to the liquid fertilizer tank 1 through the fifth pipeline 18, and the fifth pipeline 18 is provided with a second delivery pump 19 and a second check valve 20;

[0027] The pumping device includes a venturi fertilizer absorber 21 and / or a fertilizer injection pump 22, wherein the venturi fertilizer absorber 21 capillary is connected to the liquid fertilizer tank 1, the water inlet end of the venturi fertilizer absorber 21 is connected to the cross 7 through the sixth pipeline 23, the water outlet end is connected to the water inlet of the fertilizer injection pump 22, the water outlet end of the fertilizer injection pump 22 is connected to the field fertilization pipe through the seventh pipeline 24, and the sixth pipeline 23 is provided with a shut-off valve c32 and a third check valve 27; the water pump 40, the second delivery pump 19 and the fertilizer injection pump 22 can be centrifugal pumps or vane pumps, and the first delivery pump 9 can be a screw pump or a plunger pump, preferably a screw pump.

[0028] The liquid fertilizer applicator further comprises an eighth pipeline 26, which is connected to the four-way pipe 7 and the field fertilizer pipe.

[0029] The working principle of the liquid fertilizer applicator is as follows:

[0030] First, a water pump 40 is used to pump water from a water source through a first pipeline 4 to a cyclone grit chamber 2 (the water source may be river water, lake water or well water). Large particles of impurities and gravel are precipitated in the cyclone grit chamber 2. The first check valve 41 allows the filtered water of the cyclone grit chamber 2 to flow in the reverse direction through the first pipeline 4. The impurity-free water of the cyclone grit chamber 2 is transported to the filter 3 through the second pipeline 5 to further remove small particles of impurities. The gas generated by the operation of the cyclone grit chamber 2 in the second pipeline 5 is released through the exhaust valve 6. The water filtered by the filter 3 finally reaches the cross-port 7. The eighth pipeline 26 is in a normally open state. The filtered water finally enters the field fertilization pipe to meet the water demand for drip irrigation.

[0031] The specific liquid fertilizer applicator provides three fertilization modes:

[0032] 1. Liquid fertilizer application mode

[0033] First, a certain amount of liquid fertilizer is added into the liquid fertilizer tank 1 through the fertilizer inlet 1a, and then the shut-off valve c32 is opened. The water passing through the water filter 3 enters the sixth pipeline 23 through the four-way 7 and is transported to the venturi fertilizer absorber 21 and preliminarily mixed and diluted with the liquid fertilizer sucked from the liquid fertilizer tank 1 by the capillary of the venturi fertilizer absorber 21. The third check valve 27 plays a role in the reverse flow of the liquid fertilizer dilution liquid in the sixth pipeline 23. Then the fertilizer injection pump 22 is started, and the venturi fertilizer absorber 21 absorbs the liquid fertilizer dilution liquid in the liquid fertilizer tank 1 to the liquid inlet of the fertilizer injection pump 22. Then the fertilizer injection pump 22 transports the liquid fertilizer to the field fertilization pipe through the seventh pipeline 24 and further mixes and dilutes it with the filtered water of the eighth pipeline 26, and then enters the field capillary network (not shown) for fertilization.

[0034] 2. Solid fertilizer fertilization mode

[0035] First, solid fertilizer is added into the solid fertilizer dissolving tank 8 through the feed port 80, and then the shut-off valve d33 is opened. The water passing through the water quality filter 3 enters the ninth pipeline 34 through the four-way 7 and is transported to the solid fertilizer dissolving tank 8 to be mixed with the solid fertilizer. After adding an appropriate amount of water into the solid fertilizer dissolving tank 8, the shut-off valve d33 is closed to stop the water from entering, and then the motor 85 is started. The motor 85 drives the rotating shaft 83 to rotate through the bevel gear transmission, and the spiral stirring blades 84 on the rotating shaft 83 stir the solid fertilizer to dissolve it in the water. After the solid fertilizer dissolution rate reaches a predetermined value, the shut-off valve a30 is opened, the first delivery pump 9 is started, and the second delivery pump 85 is started. A delivery pump 9 delivers the solid fertilizer solution to the top of the screen 15 through the fourth pipeline 17. The driving device of the two rollers 14 drives the rollers 14 to rotate, and the rollers 14 drive the screen 15 to rotate, so that the solid fertilizer solution passes through the screen 15 and enters the inner tank of the base 100 for circulation. The solid fertilizer slag is discharged into the slag discharge box 13 through the slag outlet 12, and then the second delivery pump 19 is started. The solid fertilizer solution in the inner tank of the base 100 is delivered to the liquid fertilizer tank 1 for storage through the fifth pipeline 18. The second check valve 20 serves to prevent the solid waste solution in the solid fertilizer solution tank 8 from backflow after the second delivery pump 19 is shut down. Then, the shut-off valve c32 is opened synchronously and the fertilizer injection pump 22 is started. The venturi fertilizer absorber 21 absorbs the solid fertilizer solution in the liquid fertilizer tank 1 to the liquid inlet of the fertilizer injection pump 22. The fertilizer injection pump 22 then transports the liquid fertilizer to the large fertilizer pipe through the seventh pipeline 24 and further mixes and dilutes it with the filtered water of the eighth pipeline 26. The liquid fertilizer then enters the field capillary network for fertilization.

[0036] 3. Solid fertilizer + liquid fertilizer fertilization mode

[0037] First, a certain amount of liquid fertilizer is added to the liquid fertilizer tank 1 through the fertilizer inlet 1a, and then the shutoff valve c32 is opened. The water passing through the water filter 3 enters the eighth pipeline 26 through the cross-way 7 and is transported to the liquid fertilizer tank 1 for preliminary mixing and dilution with the liquid fertilizer. The third check valve 27 serves to reverse the flow of the liquid fertilizer dilution liquid in the liquid fertilizer tank 1 to the eighth pipeline 26. Then, solid fertilizer is added to the solid fertilizer dissolving tank 8 through the feed inlet 80, and then the shutoff valve d33 is opened. The water passing through the water filter 3 enters the ninth pipeline 34 through the cross-way 7 and is transported to the solid fertilizer dissolving tank 8 for mixing with the solid fertilizer. After adding an appropriate amount of water to the solid fertilizer dissolving tank 8, the shutoff valve d33 is closed to stop water from entering, and then the motor 85 is started. The motor 85 drives the rotating shaft 83 to rotate through the bevel gear transmission, and the spiral stirring blades 84 on the rotating shaft 83 stir the solid fertilizer to dissolve it in the water. After the solid fertilizer dissolution rate reaches a predetermined value, the shutoff valve a30 is opened, the first delivery pump 9 is started, and the third delivery pump 9 is started. A delivery pump 9 delivers the solid fertilizer solution to the top of the screen 15 through the fourth pipeline 17. The driving device of the two rollers 14, which is not shown, drives the rollers 14 to rotate. The rollers 14 drive the screen 15 to rotate, so that the solid fertilizer solution passes through the screen 15 and enters the inner tank of the base 100 for storage. The solid fertilizer slag is discharged into the slag discharge box 13 through the slag outlet 12, and then the second delivery pump 19 is started. The solid fertilizer solution in the inner tank of the base 100 is delivered to the liquid fertilizer tank 1 for storage through the fifth pipeline 18. The second check valve 20 serves to prevent the solid waste solution in the solid fertilizer solution tank 8 from backflow after the second delivery pump 19 is shut down. Then, the shut-off valve c32 is opened synchronously and the fertilizer injection pump 22 is started. The venturi fertilizer absorber 21 absorbs the solid fertilizer solution and the liquid fertilizer mixture in the liquid fertilizer tank 1 to the liquid inlet of the fertilizer injection pump 22. Then the fertilizer injection pump 22 transports the liquid fertilizer to the field fertilization pipe through the seventh pipeline 24 and further mixes and dilutes it with the filtered water of the eighth pipeline 26, and then enters the field capillary network for fertilization.

[0038] The liquid fertilizer applicator has three fertilization modes, and the liquid fertilizer, solid fertilizer and drip irrigation water source use the same water quality filtration device. While providing multiple fertilization modes, it optimizes the water source configuration and reduces the number of fertilizer applicators, thereby improving the convenience of fertilization operations and reducing fertilization costs.

[0039] Example 2

[0040] like Figure 1 As shown, compared with Example 1, the difference is that pressure gauges 28 are provided on the second pipeline 5 and the fourth pipeline 17, and the seventh pipeline 24 is provided with a pressure gauge 28 and a flow meter 29, which can monitor the water inlet pressure of the second pipeline 5 and the delivery pressure of the solid fertilizer solution on the fourth pipeline 17 in real time, and the pressure gauge 28 and the flow meter 29 on the seventh pipeline 24 monitor the pressure and flow of the liquid fertilizer finally applied to the field, so that the fertilization parameters can be adjusted in time and accurately.

[0041] Example 3

[0042] Compared with the above embodiment, the difference is that the liquid fertilizer tank 1 is made of plastic material, such as polyethylene or polypropylene, which has the advantage of being resistant to corrosion by acidic liquid fertilizer with a pH of 4, and is light in weight and resistant to aging, with an expected service life of 10 years and easy to carry.

[0043] Although the present invention is susceptible to various modifications and alternative forms, the drawings and the drawings show specific embodiments of the present invention by way of example. However, it should be understood that the detailed description of the specific embodiments of the present invention and the drawings is not intended to limit the present invention to the specific forms disclosed, but on the contrary, the present invention will cover all modifications, equivalents and alternative forms within the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A liquid fertilizer applicator, characterized in that: It comprises a water quality filtering device, a solid fertilizer conversion device, a liquid fertilizer tank (1) and a pumping device, wherein the top of the liquid fertilizer tank (1) is provided with a fertilizer inlet (1a); The water quality filtering device comprises a cyclone grit chamber (2) and a filter (3); the water inlet end of the cyclone grit chamber (2) is connected to a water source via a first pipeline (4); a water pump (40) and a first check valve (41) are provided on the first pipeline (4); the water outlet end of the cyclone grit chamber (2) is connected to a second pipeline (5); the filter (3) is provided on the second pipeline (5); an exhaust valve (6) is provided on the second pipeline (5); and a cross-joint (7) is provided at the water outlet end of the second pipeline (5); The solid fertilizer to liquid fertilizer device comprises a solid fertilizer dissolving tank (8), a first delivery pump (9) and a screen filter (10); the solid fertilizer dissolving tank (8) has a feed inlet (80), a water inlet (81) and a liquid outlet (82), and a stirring mechanism is provided in the solid fertilizer dissolving tank (8); the screen filter (10) comprises a base (100), and the base (100) is a trough-shaped body with an opening on one side, and comprises a bottom arm, a first side wall (100b), The second side wall (100c) and the third side wall (100d), the bottom arm is defined by the first straight arm (100a-1), the vertical arm (100a-2) and the second straight arm (100a-3), wherein the first straight arm (100a-1) is provided with a fertilizer outlet (11), the second straight arm (100a-3) is provided with a slag outlet (12), the lower part of the slag outlet (12) is connected to a slag discharge box (13), and the bottom of the second side wall (100c) and the third side wall (100d) are provided with a slag discharge box (13). Two rollers (14) are pivotally arranged between the second straight arm (100c) and the third side wall (100d), one of the rollers (14) being arranged above the second straight arm (100a-3), and an annular screen (15) being arranged between the two rollers (14); the water inlet (81) is connected to the cross-port (7) via a ninth pipeline (34), and a cut-off valve is arranged on the ninth pipeline (34); the liquid outlet (82) is connected to the water inlet of the first delivery pump (9) via a third pipeline (16), and a cut-off valve is arranged on the third pipeline (16); the water outlet of the first delivery pump (9) is connected to a fourth pipeline (17), and the water outlet end of the fourth pipeline (17) is arranged above the screen (15); the fertilizer outlet (11) is connected to the liquid fertilizer tank (1) via a fifth pipeline (18), and a second delivery pump (19) and a second check valve (20) are arranged on the fifth pipeline (18); The pumping device comprises a venturi fertilizer suction device (21) and / or a fertilizer injection pump (22), wherein the capillary of the venturi fertilizer suction device (21) is connected to the liquid fertilizer tank (1), the water inlet end of the venturi fertilizer suction device (21) is connected to the cross-connection (7) through a sixth pipeline (23), the water outlet end is connected to the water inlet of the fertilizer injection pump (22), the water outlet end of the fertilizer injection pump (22) is connected to the field fertilization pipe through a seventh pipeline (24), and the sixth pipeline (23) is provided with a cut-off valve and a third check valve (27); The liquid fertilizer applicator also comprises an eighth pipeline (26), wherein the eighth pipeline (26) is connected to the four-way pipe (7) and the field fertilizer application pipe.

2. The liquid fertilizer applicator according to claim 1, characterized in that: The second pipeline (5) and the fourth pipeline (17) are provided with pressure gauges (28), and the seventh pipeline (24) is provided with a pressure gauge (28) and a flow meter (29).

3. The liquid fertilizer applicator according to claim 2, characterized in that: The filter (3) is a disc-type filter (3).

4. The liquid fertilizer applicator according to any one of claims 1 to 3, characterized in that: The water pump (40), the second delivery pump (19) and the fertilizer injection pump (22) are centrifugal pumps or vane pumps, and the first delivery pump (9) is a screw pump or a plunger pump.

5. The liquid fertilizer applicator according to claim 4, characterized in that: The liquid fertilizer tank (1) is made of plastic material.

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