Liquid fertilizer filtering device

Abstract

The utility model discloses a liquid fertilizer filtering device, which belongs to the field of fertilizer treatment, and adopts the technical scheme that the liquid fertilizer filtering device comprises a biogas slurry water and fertilizer control all-in-one machine, the front side of the biogas slurry water and fertilizer control all-in-one machine is connected with a vibrating screen through a pipeline, and the top of the vibrating screen is detachably provided with a screen mesh; a solid outlet of the vibrating screen is connected with a spiral extrusion type solid-liquid separator, a liquid outlet of the spiral extrusion type solid-liquid separator is connected to a liquid pipeline inlet of the biogas slurry water and fertilizer control all-in-one machine through a pipeline, and the biogas slurry water and fertilizer control all-in-one machine has the advantages that the weight of the all-in-one machine is reduced, the operation is optimized, and the filtering effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of fertilizer treatment, and more specifically it relates to a liquid fertilizer filtration device. Background Technology

[0002] The biogas slurry and manure produced by the fermentation of organic fertilizer are important resources for crop irrigation, and their pretreatment process is crucial. Currently, integrated biogas slurry water and fertilizer control systems are commonly used in pipeline irrigation systems for pretreatment. The main steps include water mixing and filtration, with the aim of preventing the pipes and nozzles from being clogged by filter residue.

[0003] However, traditional integrated filters typically employ multiple filters connected in series, with a filter structure as shown in patent publication number CN119056137A. This design is not ideal in terms of filtration efficiency, especially for fine particles (such as those larger than 150 mesh). Furthermore, the large amount of filter residue in biogas slurry and manure necessitates frequent filter cleaning, making operation cumbersome. Moreover, multiple filters connected in series not only require complex piping connections but also occupy a significant amount of space within the integrated machine, hindering equipment placement. Therefore, a new solution is needed to address these issues. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a liquid fertilizer filtration device, which has the advantages of slimming down the integrated machine, optimizing operation, and having a better filtration effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A liquid fertilizer filtration device includes a biogas slurry water-fertilizer control integrated machine. A vibrating screen is connected to the front of the biogas slurry water-fertilizer control integrated machine via a pipe. A screen is detachably provided on the top of the vibrating screen. A screw extrusion solid-liquid separator is connected to the solid outlet of the vibrating screen. The liquid outlet of the screw extrusion solid-liquid separator is connected to the liquid pipeline inlet of the biogas slurry water-fertilizer control integrated machine via a pipe.

[0007] According to the advantages of the scheme, at least the following advantages are obtained: firstly, the vibrating screen can be replaced by different mesh screens according to different requirements, since the principle is to screen by vibration, the solid matter that cannot pass through the screen can be directly discharged, the filtering capacity is effectively improved, and the mesh number of the screen can be more than 500, so that the biogas liquid and manure are effectively preliminarily screened.

[0008] The utility model further sets up: the solid matter export of vibrating screen is higher than the inlet of spiral extrusion type solid liquid separator, the inlet of spiral extrusion type solid liquid separator is equipped with auxiliary feeding hopper.

[0009] According to the advantages of the scheme, at least the following advantages are obtained: the auxiliary feeding hopper forms an expanding structure, and the solid matter discharged by the vibrating screen can be effectively received.

[0010] The utility model further sets up: vibrating screen realizes feeding through the downcomer, the outlet of downcomer is located at the top of vibrating screen, and the outlet position of downcomer is inverted hook shape.

[0011] According to the advantages of the scheme, at least the following advantages are obtained: the inverted hook shape can avoid the problems of screen damage, local scouring and poor filtering effect caused by the liquid in the downcomer directly impacting the screen.

[0012] The utility model further sets up: the downcomer is equipped with a valve near the outlet position.

[0013] According to the advantages of the scheme, at least the following advantages are obtained: the valve can be conveniently closed by the user at any time to replace the screen or pause the filtering.

[0014] According to the advantages of the scheme, at least the following advantages are obtained:

[0015] 1. The main filtering function in the original integrated machine is transferred to the external vibrating screen, and the spiral extrusion type solid liquid separator is arranged, the vibrating screen can be replaced by different mesh screens according to different requirements, since the principle is to screen by vibration, the solid matter that cannot pass through the screen can be directly discharged, the filtering capacity is effectively improved, and the mesh number of the screen can be more than 500, so that the biogas liquid and manure are effectively preliminarily screened.

[0016] Secondly, the screen is exposed outside, so it is more convenient to disassemble and replace, and it is more time-saving and labor-saving than the cylinder filter. In addition, the solid-liquid separator in the prior art can further separate the solid after the preliminary screening, the solid can be sent back into the organic fertilizer for fermentation, and the liquid can be recycled for sprinkling irrigation, achieving two goals at once.

[0017] Finally, the device thins the filtering mechanism in the original all-in-one machine, and transfers the main filtering function to the external vibrating screen, which can effectively reduce the size of the all-in-one machine itself and facilitate placement.

[0018] 2. By limiting the outlet position of the discharging pipe in front of the vibrating screen to be barbed, the problem of screen damage, local erosion and poor filtering effect caused by the liquid in the discharging pipe directly impacting the screen can be avoided.

[0019] 3. By providing an auxiliary feeding hopper in the spiral extrusion type solid-liquid separator, the auxiliary feeding hopper can form a flared structure to effectively receive the solid discharged by the vibrating screen. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall schematic view of one preferred embodiment in the utility model;

[0021] Figure 2 is the cross-sectional schematic view of one preferred embodiment in the utility model.

[0022] Reference signs: 1, biogas slurry water and fertilizer control integrated machine; 2, vibrating screen; 21, solid outlet; 22, liquid outlet; 23, screen; 3, spiral extrusion type solid-liquid separator; 4, auxiliary feeding hopper; 5, discharging pipe; 6, valve. DETAILED DESCRIPTION

[0023] The utility model will be further described in detail below in combination with the drawings.

[0024] A liquid fertilizer filtering device, as shown in Figure 1 and Figure 2 As shown, it comprises a biogas slurry water and fertilizer control integrated machine 1, and the rear side of the biogas slurry water and fertilizer control integrated machine 1 is connected with an irrigation system or a buffer tank. The irrigation system can be used to irrigate crops, and the buffer tank can be used to buffer the treated liquid fertilizer.

[0025] The front side of the biogas slurry water and fertilizer control integrated machine 1 is connected with a vibrating screen 2 by a pipeline. The vibrating screen 2 is prior art, and its principle is to separate the mud and solid-liquid by vibration. The solid matter that cannot pass through the screen mesh 23 can be directly discharged from the solid matter outlet 21. The vibrating screen 2 is detachably provided with a screen mesh 23 at the top. The screen mesh 23 is preferably placed on the top of the vibrating screen 2. The screen mesh 23 will adhere to the surface of the vibrating screen 2 under the action of liquid. Of course, in other embodiments, the screen mesh 23 can be fixed on the surface of the vibrating screen 2 by other ways such as pasting, pressing and the like. Since the screen mesh 23 is exposed on the outside, it is more convenient to disassemble and replace. Compared with the cylinder filter, it is more time-saving and labor-saving.

[0026] After the untreated liquid fertilizer is screened by the vibrating screen 2, the solid matter in the liquid fertilizer can be directly discharged from the solid matter outlet 21. The liquid will flow into the biogas slurry water and fertilizer control integrated machine 1 from the liquid outlet 22 through the pipeline, and be filtered again by the cylinder filter in the biogas slurry water and fertilizer control integrated machine 1. It is worth noting that when the mesh number of the screen mesh 23 in the screening machine is large enough, even if the filter is not set in the biogas slurry water and fertilizer control integrated machine 1, the liquid fertilizer used for irrigation at last will not block the irrigation nozzle.

[0027] In order to further improve the filtering efficiency and reduce the cost, in some embodiments, the solid matter outlet 21 of the vibrating screen 2 is connected with a spiral extrusion type solid-liquid separator 3. The spiral extrusion type solid-liquid separator 3 is also prior art. Its principle is to extrude the solid with high water content by spiral blades, so as to realize the deep separation of solid and liquid. Here, it will not be described in detail.

[0028] The solid matter outlet 21 of the vibrating screen 2 is higher than the inlet of the spiral extrusion type solid-liquid separator 3. The inlet of the spiral extrusion type solid-liquid separator 3 is provided with an auxiliary feeding hopper 4. The liquid outlet of the spiral extrusion type solid-liquid separator 3 is connected to the liquid pipeline inlet of the biogas slurry water and fertilizer control integrated machine 1 through a pipeline (not shown in the figure). The solid can be directly conveyed to the designated place through the discharge on the hopper car or the conveying belt, thereby realizing the re-fermentation of the solid organic fertilizer.

[0029] The vibrating screen 2 realizes feeding through a feeding pipe 5. The outlet of the feeding pipe 5 is located at the top of the vibrating screen 2. In the preferred embodiment, the outlet position of the feeding pipe 5 is in the shape of a barb. The barb shape can avoid the problem of screen mesh 23 damage, local flushing and poor filtering effect caused by the liquid in the feeding pipe 5 directly impacting the screen mesh 23. In addition, in the preferred embodiment, the feeding pipe 5 is provided with a valve 6 near the outlet position. The valve 6 can be an electromagnetic valve or a manual valve. The valve 6 is convenient for the user to close the feeding pipe 5 at any time, so as to replace the screen mesh 23 or pause the filtering.

[0030] The working process and beneficial effects of the utility model are as follows: water and fertilizer such as biogas slurry and excrement enter the vibrating screen 2 through the barb part of the discharging pipe 5, most of the liquid will enter the biogas slurry water and fertilizer control and integrated machine 1 for treatment after the preliminary screening of the vibrating screen 2, and then is delivered to the irrigation system or the buffer pool for buffering; a small part of liquid will be mixed in the solid and separated again by the spiral extrusion type solid-liquid separator 3, the separated liquid will enter the biogas slurry water and fertilizer control and integrated machine 1 through the pipeline, and the separated solid can be composted and fermented, achieving two goals at one time.

[0031] By transferring the main filtering function in the original integrated machine to the external vibrating screen 2 and setting the spiral extrusion type solid-liquid separator 3, the filtering amount is effectively improved, the vibrating screen 2 can replace the screen mesh 23 with different mesh according to different requirements, the mesh of the screen mesh 23 can reach more than 500 meshes, and the biogas slurry and manure water are effectively preliminarily screened.

[0032] Secondly, the screen mesh 23 is exposed to the outside, so it is convenient to disassemble and replace, and it is more time-saving and labor-saving than the cylinder filter. In addition, the solid after the preliminary screening can be further separated by the spiral extrusion type solid-liquid separator 3 in the prior art, the solid can be sent into the organic fertilizer for fermentation again, and the liquid can be recycled for sprinkling irrigation, achieving two goals at one time.

[0033] Finally, the filtering mechanism in the original integrated machine is slimmed down, the main filtering function is transferred to the external vibrating screen 2, the size of the integrated machine itself can be effectively reduced, and the integrated machine is convenient to place.

[0034] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. within the design concept of the utility model should be included in the protection scope of the utility model.

Claims

1. A liquid fertilizer filtering device, comprising a biogas slurry water and fertilizer control integrated machine (1), characterized in that: The biogas slurry water and fertilizer control integrated machine (1) is provided with a vibrating screen (2) connected through a pipeline at the front side, a screen mesh (23) is detachably arranged at the top of the vibrating screen (2), a screw extrusion type solid-liquid separator (3) is connected to the solid material outlet (21) of the vibrating screen (2), and the liquid outlet of the screw extrusion type solid-liquid separator (3) is connected to the liquid pipeline inlet of the biogas slurry water and fertilizer control integrated machine (1) through a pipeline.

2. The liquid fertilizer filtration apparatus of claim 1, wherein: The solid material outlet (21) of the vibrating screen (2) is higher than the inlet of the screw extrusion type solid-liquid separator (3), and the inlet of the screw extrusion type solid-liquid separator (3) is provided with an auxiliary feeding hopper (4).

3. The liquid fertilizer filtration apparatus of claim 1, wherein: The vibrating screen (2) realizes feeding through a discharging pipe (5), the outlet of the discharging pipe (5) is located at the top of the vibrating screen (2), and the outlet position of the discharging pipe (5) is in the shape of an inverted hook.

4. The liquid fertilizer filtration apparatus of claim 3, wherein: The discharging pipe (5) is provided with a valve (6) near the outlet position.

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