CN115300989B - A pipeline filtering device for integrated water and fertilizer transportation of wheat - Google Patents

Abstract

The invention discloses a pipeline filtering device for integrated conveying of wheat water and fertilizer, which comprises a water inlet pipe, a water outlet pipe, a sliding pipe sleeved on the outer ring of the water inlet pipe and the water outlet pipe, and a sealed drainage box fixedly connected with the water inlet pipe, wherein one end of the cavity section, which is far away from the connecting section, is inserted into the inner cavity of the drainage box, a filter screen assembly is fixedly connected in the cavity section, the filter screen assembly axially separates the filter cavity into a water supply cavity and a backflushing cavity, a communication hole is formed in the side surface of the water inlet pipe, a drainage communication hole is formed in the drainage inner pipe, a sliding communication hole is formed in the outer ring of the water supply cavity, the water inlet pipe is separated from the connecting section when the communication hole is positioned on one side of the water supply cavity, and the sliding communication hole is staggered with the drainage communication hole.

Description

A pipeline filtering device for integrated water and fertilizer transportation of wheat

Technical Field

The invention relates to the technical field of water-fertilizer integration, and in particular to a pipeline filtering device used for water-fertilizer integration transportation of wheat.

Background Art

Water-fertilizer integration technology refers to a new agricultural technology that integrates irrigation and fertilization. Water-fertilizer integration is to use a pressure system (or natural terrain drop) to mix soluble solid or liquid fertilizers according to the soil nutrient content and the fertilizer requirements and characteristics of the crop types. The fertilizer solution is mixed with irrigation water and supplied through a controllable pipeline system. After the water and fertilizer are mixed, drip irrigation is formed through pipes and drippers to evenly, regularly and quantitatively infiltrate the root development and growth area of the crop, so that the main root soil always maintains looseness and appropriate water content; at the same time, according to the fertilizer requirements of different crops, soil environment and nutrient content, the water requirements of crops in different growth periods, and the fertilizer requirements, the demand design for different growth periods is carried out, and water and nutrients are provided to crops directly in a regular and quantitative manner in proportion.

The integrated water-fertilizer technology saves 50% to 70% of fertilizer compared to conventional fertilization; at the same time, it greatly reduces the water pollution caused by excessive fertilization in vegetable and orchard facilities. Since the integrated water-fertilizer technology meets the needs of crops to "eat and drink enough" during the critical growth period through artificial quantitative regulation, any nutrient deficiency symptoms are eliminated, so the goal of good crop yield and quality can be achieved in production.

For integrated water and fertilizer, liquid or solid fertilizers can be selected. When solid fertilizers are selected, impurities are inevitably mixed in. Therefore, it is best to set up a certain filtration system. If biogas slurry or humic acid liquid fertilizer is used, a filtration system must be set up to avoid clogging of pipes and drip irrigation nozzles. Therefore, in the process of integrated water and fertilizer transportation, it is very necessary to set up a set of filtration devices that can achieve good filtration effects. The existing filtration system uses filter mesh filtration, which needs to be replaced or cleaned frequently, and cannot achieve automatic discharge of impurities. If it is not cleaned for a long time, it is easy to cause clogging.

Summary of the invention

In order to solve the above technical problems, the present invention provides the following technical solutions:

The present invention discloses a pipeline filtering device for integrated water and fertilizer transportation of wheat, comprising a coaxial water inlet pipe and a water outlet pipe with equal outer diameters, and a sliding pipe sleeved on the outer circles of the water inlet pipe and the water outlet pipe, wherein the end of the water inlet pipe close to the water outlet pipe is closed, and the sliding pipe comprises a cavity section sleeved on the water inlet pipe and a connecting section sleeved on the water outlet pipe, the inner diameter of the connecting section is equal to the outer diameter of the water outlet pipe, the inner diameter of the cavity section is larger than the outer diameter of the water inlet pipe, thereby forming a filtering cavity, and the end of the cavity section away from the connecting section is sealed and fitted with the water inlet pipe, and further comprises a closed drainage box fixedly connected to the water inlet pipe and a spring for pushing the sliding pipe toward the direction of the water inlet pipe so that the water inlet pipe is inserted into the connecting section, and the end of the cavity section away from the connecting section is inserted into the inner cavity of the drainage box, and the drainage box It comprises an inner drainage tube which is sealed with the outer ring of the cavity section, a drainage pipe is provided at the bottom of the drainage box, a drainage valve is installed on the drainage pipe, a filter screen assembly is fixedly connected in the cavity section, the filter screen assembly divides the filter cavity into a water supply cavity and a backwash cavity along the axial direction, the backwash cavity is arranged on the side of the filter screen assembly close to the water outlet pipe, a connecting hole is provided on the side of the water inlet pipe, a drainage connecting hole which is connected with the inner cavity of the drainage box is provided on the inner drainage tube, a sliding connecting hole which is adapted to the drainage connecting hole is provided on the outer ring of the water supply cavity, when the connecting hole is located on the side of the backwash cavity, the water inlet pipe is inserted into the connecting section and the sliding connecting hole is connected with the drainage connecting hole, when the connecting hole is located on the side of the water supply cavity, the water inlet pipe is separated from the connecting section and the sliding connecting hole is misaligned with the drainage connecting hole.

As a preferred technical solution of the present invention, the filter assembly includes a fixed filter and a movable filter. The fixed filter is annular and the outer ring is fixedly connected to the cavity section. The inner ring of the fixed filter is fixedly connected to a sealing ring that fits the outer ring of the water inlet pipe. The movable filter is arranged in the water supply cavity and slides axially along the water inlet pipe. The mesh holes of the fixed filter and the movable filter holes are staggered.

As a preferred technical solution of the present invention, the fixed filter screen includes multiple concentric fixed mesh circles and fixed connecting rods connecting the fixed mesh circles, and the movable filter screen includes multiple concentric movable mesh circles and movable connecting rods connecting the movable mesh circles, and the movable mesh circles and fixed mesh circles are staggered.

As a preferred technical solution of the present invention, the outer ring of the sealing ring is fixedly connected with a stopper, and the movable filter screen is located between the fixed filter screen and the stopper.

As a preferred technical solution of the present invention, the drainage box also includes an outer drainage pipe located on the outer circle of the inner drainage pipe, one end of the outer drainage pipe close to the outlet pipe is fixedly connected to the inner drainage pipe through a front end plugging plate, and the other end of the outer drainage pipe is fixedly connected to the inlet pipe through a rear end plugging plate.

As a preferred technical solution of the present invention, a plurality of the communicating holes are arranged along the circumference of the water inlet pipe.

As a preferred technical solution of the present invention, one end of the water inlet pipe close to the water outlet pipe is chamfered.

As a preferred technical solution of the present invention, a plurality of the drainage connecting holes and the sliding connecting holes are arranged along the circumferential direction.

As a preferred technical solution of the present invention, the spring is sleeved on the water outlet pipe, one end of the spring is connected to the water outlet pipe, and the other end of the spring is connected to the sliding pipe.

The beneficial effects of the present invention are as follows: the present invention can filter and automatically discharge impurities in the pipeline without replacing the filter screen, can effectively prevent the filter screen from being blocked, improve the filtering effect, and ensure the smoothness of the pipeline and the drip irrigation nozzle.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a cross-sectional view of the present invention;

Fig. 2 is a cross-sectional view of another state of the present invention;

FIG3 is an enlarged view of the filter assembly of the present invention;

FIG4 is an enlarged view of the filter assembly of the present invention in another state;

FIG5 is a front view of a fixed filter screen of the present invention;

FIG6 is a front view of the movable filter screen of the present invention;

In the figure: 1, water outlet pipe, 2, water inlet pipe, 3, spring, 4, sliding pipe, 41, cavity section, 42, connecting section, 5, filter assembly, 51, fixed connecting rod, 52, fixed mesh ring, 53, sealing ring, 54, movable connecting rod, 55, movable mesh ring, 56, block, 6, connecting hole, 7, drainage inner pipe, 8, drainage outer pipe, 9, drainage connecting hole, 10, sliding connecting hole, 11, front end blocking plate, 12, rear end blocking plate, 13, drainage pipe, 14, drainage valve.

DETAILED DESCRIPTION

The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

As shown in Figures 1-6, the present invention is a pipeline filtering device for integrated water and fertilizer transportation of wheat, including a coaxial water inlet pipe 2 and a water outlet pipe 1 with equal outer diameters, and a sliding pipe 4 sleeved on the outer circles of the water inlet pipe 2 and the water outlet pipe 1.

The water inlet pipe 2 is connected to the liquid supply assembly, and the water outlet pipe 1 is connected to the drip irrigation nozzle. The water inlet pipe 2 and the water outlet pipe 1 maintain a certain distance, and the end of the water inlet pipe 2 close to the water outlet pipe 1 is closed. The sliding tube 4 includes a cavity section 41 sleeved on the water inlet pipe 2 and a connecting section 42 sleeved on the water outlet pipe 1. The inner diameter of the connecting section 42 is equal to the outer diameter of the water outlet pipe 1, so as to achieve sealing here, and the connecting section 42 can slide on the water outlet pipe 1, and sealing can be achieved during the entire sliding process.

When the connecting section 42 slides toward the water inlet pipe 2, the water inlet pipe 2 can be inserted into the connecting section 2 to close the water outlet pipe 1. One end of the water inlet pipe 2 close to the water outlet pipe 1 is chamfered to facilitate insertion.

The inner diameter of the cavity section 41 is larger than the outer diameter of the water inlet pipe 2 to form a filter cavity. One end of the cavity section 41 away from the connecting section 42 is sealed against the water inlet pipe 2 so that the cavity section 41 slides on the water inlet pipe 2 and achieves sealing.

A filter screen assembly 5 is fixedly connected to the cavity section 41, and the filter screen assembly 5 divides the filter cavity into a water supply cavity and a backwash cavity along the axial direction. The backwash cavity is arranged on the side of the filter screen assembly 5 close to the water outlet pipe 1. The filter screen assembly 5 includes a fixed filter screen and a movable filter screen. The fixed filter screen is annular and the outer ring is fixedly connected to the cavity section 41. The inner ring of the fixed filter screen is fixedly connected to a sealing ring 53 that fits the outer ring of the water inlet pipe 2.

When the sliding tube 4 slides axially, the fixed filter screen moves along with the sliding tube 4 , and the sealing ring 53 realizes sealing with the outer ring of the water inlet pipe 2 .

The movable filter is also annular, and the outer ring is slightly smaller than the inner diameter of the cavity section 41. The inner ring of the movable filter is sleeved on the outer ring of the sealing ring 53. The movable filter is arranged in the water supply cavity and slides axially along the water inlet pipe 2. When the water flows from the water supply cavity to the recoil cavity, the movable filter is pressed against the fixed filter by the flow of water to achieve a better filtering effect; when the water flows from the recoil cavity to the water supply cavity, the movable filter is axially separated from the fixed filter by the flow of water to achieve recoil, which is convenient for the discharge of debris in the mesh.

The mesh holes of the fixed filter and the movable filter are staggered so that a better filtering effect can be achieved when the movable filter is pressed against the fixed filter, and the debris in the mesh holes can be easily discharged when the movable filter is axially separated from the fixed filter.

As shown in Figures 3 to 6, the fixed filter screen includes a plurality of concentric fixed mesh rings 52 and a fixed connecting rod 51 connecting the fixed mesh rings 52. The fixed connecting rod 51 is arranged on the side of the fixed mesh ring 52 away from the movable filter screen. The fixed connecting rod 51 is a radially extending metal rod and is circumferentially arranged in plurality. The outer end of the fixed connecting rod 51 is fixedly connected to the cavity section 41, and the inner end of the fixed connecting rod 51 is fixedly connected to the sealing ring 53, thereby achieving the fixation of the fixed filter screen and the sealing ring 53.

The movable filter screen includes a plurality of concentric movable mesh rings 55 and a movable connecting rod 54 connecting the movable mesh rings 55. The movable connecting rod 54 is arranged on a side of the movable mesh ring 55 away from the fixed filter screen. The movable connecting rod 54 is a radially extending metal rod and a plurality of movable connecting rods 54 are arranged circumferentially.

The movable mesh rings 55 and the fixed mesh rings 52 are arranged alternately, so that the movable mesh rings 55 can be embedded between adjacent fixed mesh rings 52, and at the same time, the fixed mesh rings 52 are embedded between adjacent movable mesh rings 55, so that the filter mesh holes become smaller and the filtering effect is enhanced.

The outer ring of the sealing ring 53 is fixedly connected with a stopper 56 , and the movable filter screen is located between the fixed filter screen and the stopper 56 , which serves to limit the movable filter screen.

It also includes a closed drainage box fixedly connected to the water inlet pipe 2 and a spring 3 that pushes the sliding tube 4 toward the water inlet pipe 2 to insert the water inlet pipe 2 into the connecting section 42. The spring 3 is sleeved on the water outlet pipe 1, one end of the spring 3 is connected to the water outlet pipe 1, and the other end of the spring 3 is connected to the sliding tube 4.

The end of the cavity section 41 away from the connecting section 42 is inserted into the inner cavity of the drainage box, and the drainage box includes a drainage inner tube 7 sealed with the outer circle of the cavity section 41, and the drainage box also includes a drainage outer tube 8 located at the outer circle of the drainage inner tube 7, and the end of the drainage outer tube 8 close to the outlet pipe 1 is fixedly connected to the drainage inner tube 7 through the front end plugging plate 11, and the other end of the drainage outer tube 8 is fixedly connected to the water inlet pipe 2 through the rear end plugging plate 12, so that the inner cavity of the drainage box is formed by the drainage outer tube 8, the drainage inner tube 7, the front end plugging plate 11 and the rear end plugging plate 12, and the cavity section 41 is inserted into the drainage box through the inner hole of the drainage inner tube 7.

A drain pipe 13 is provided at the bottom of the drain box, and a drain valve 14 is mounted on the drain pipe 13 for draining water.

The drainage inner tube 7 is provided with a drainage connecting hole 9 connected with the inner cavity of the drainage box, and the outer circle of the water supply cavity is provided with a sliding connecting hole 10 adapted to the drainage connecting hole 9. The drainage connecting hole 9 and the sliding connecting hole 10 are both provided in multiple numbers along the circumferential direction.

A communication hole 6 is opened on the side of the water inlet pipe 2 , and a plurality of the communication holes 6 are arranged along the circumference of the water inlet pipe 2 .

As shown in FIG. 1 , when the communication hole 6 is located at one side of the backflushing chamber, the water inlet pipe 2 is inserted into the connecting section 42 and the sliding communication hole 10 is connected with the drainage communication hole 9 .

As shown in FIG. 2 , when the communication hole 6 is located at one side of the water supply cavity, the water inlet pipe 2 is separated from the connecting section 42 and the sliding communication hole 10 is misaligned with the drainage communication hole 9 .

The method of using the present invention:

Before irrigation, the elastic force of the spring 3 causes the sliding tube 4 to be located in the state shown in FIG. 1 , at which time the connecting hole 6 is located on one side of the recoil chamber, the water inlet pipe 2 is inserted into the connecting section 42, and the sliding connecting hole 10 is connected with the drainage connecting hole 9. When irrigation is carried out, water enters the recoil chamber through the connecting hole 6 of the water inlet pipe 2. Since the water inlet pipe 2 is inserted into the connecting section 42, the water outlet pipe is closed, so the water flows into the water supply chamber through the recoil chamber. At the same time, the movable filter screen is axially separated from the fixed filter screen by the flow of water, realizing recoil, and the debris in the mesh follows the water flow from the sliding connecting hole 10 and the drainage connecting hole 9 into the drainage box, and finally flows out through the drainage pipe 13 at the bottom of the drainage box.

After a certain period of backflushing, the drain valve 14 is closed, the interior of the drain box is sealed, and after the water flows into the drain box, the sliding tube 4 is pushed by the water flow to slide toward the drain pipe 1, so that the connecting hole 6 is located on one side of the water supply chamber, the water inlet pipe 2 is separated from the connecting section 42, and the sliding connecting hole 10 is misaligned with the drainage connecting hole 9. At this time, the water flows into the water supply chamber through the connecting hole 6, and then enters the water inlet pipe 2 from the connecting section 42 after being filtered by the filter assembly 5, thereby realizing irrigation. Since the interior of the drain box is sealed at this time, the sliding tube 4 always maintains this state.

Before the end of irrigation, the drain valve 14 can be opened first. At this time, the drain box is connected to the outside. Through the elastic force of the spring 3, the sliding tube 4 slides back to the position of Figure 1 to continue recoil. After a certain period of recoil, the water pump is turned off to stop irrigation.

Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, 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. Therefore, they cannot be understood as limitations on the present invention.

In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (9)

1. A pipeline filter equipment for wheat liquid manure integration is carried, its characterized in that: including coaxial inlet tube (2) and outlet pipe (1) that just the external diameter equals to and cover in the sliding tube (4) of inlet tube (2) and outlet pipe (1) outer lane, the one end that inlet tube (2) was close to outlet pipe (1) is sealed, sliding tube (4) are including cover cavity section (41) on inlet tube (2) and cover link (42) on outlet pipe (1), link (42) internal diameter equals with outlet pipe (1) external diameter, thereby cavity section (41) internal diameter is greater than inlet tube (2) external diameter and forms the filter chamber, thereby cavity section (41) keep away from the one end of link (42) and sealing laminating of inlet tube (2), still include with the airtight drain tank of inlet tube (2) rigid coupling and with sliding tube (4) to the direction promotion of inlet tube (2) make inlet tube (2) insert in the inner chamber of link (42), cavity section (41) keep away from the one end of link (42) and insert in the drain tank, the drain tank includes drain tank (7) of sealing laminating with cavity section (41), drain tank (13) have the drain valve assembly (13) in the drain valve assembly (13), the filter screen subassembly (5) is separated into water supply chamber and recoil chamber along the axial, recoil chamber sets up in one side that filter screen subassembly (5) are close to outlet pipe (1), and open the side of inlet tube (2) has communication hole (6), open on drainage inner tube (7) have with drainage intercommunicating pore (9) of drainage case inner chamber intercommunication, water supply chamber outer lane open have with the slip intercommunicating pore (10) of drainage intercommunicating pore (9) adaptation, intercommunicating pore (6) are located recoil chamber one side inlet tube (2) insert linkage segment (42) and slip intercommunicating pore (10) and drainage intercommunicating pore (9) intercommunication, inlet tube (2) and linkage segment (42) separation and slip intercommunicating pore (10) dislocation with drainage intercommunicating pore (9) when intercommunicating pore (6) are located water supply chamber one side.

2. The pipeline filtering device for integrated wheat water and fertilizer conveying according to claim 1, wherein: the filter screen subassembly (5) is including fixed filter screen and activity filter screen, fixed filter screen is annular and outer lane and cavity section (41) rigid coupling, the inner circle rigid coupling of fixed filter screen has sealing washer (53) with inlet tube (2) outer lane laminating, the activity filter screen sets up in the water supply chamber and follows inlet tube (2) axial slip, the mesh of fixed filter screen and the mesh dislocation set of activity filter screen.

3. The pipeline filtering device for integrated wheat water and fertilizer conveying according to claim 2, wherein: the fixed filter screen comprises a plurality of concentric fixed net rings (52) and fixed connecting rods (51) connected with the fixed net rings (52), the movable filter screen comprises a plurality of concentric movable net rings (55) and movable connecting rods (54) connected with the movable net rings (55), and the movable net rings (55) and the fixed net rings (52) are arranged in a staggered mode.

4. The pipeline filtering device for integrated wheat water and fertilizer conveying according to claim 2, wherein: the outer ring of the sealing ring (53) is fixedly connected with a stop block (56), and the movable filter screen is positioned between the fixed filter screen and the stop block (56).

5. The pipeline filtering device for integrated wheat water and fertilizer conveying according to claim 1, wherein: the drainage box further comprises a drainage outer pipe (8) positioned on the outer ring of the drainage inner pipe (7), one end, close to the water outlet pipe (1), of the drainage outer pipe (8) is fixedly connected with the drainage inner pipe (7) through a front end blocking plate (11), and the other end of the drainage outer pipe (8) is fixedly connected with the water inlet pipe (2) through a rear end blocking plate (12).

6. The pipeline filtering device for integrated wheat water and fertilizer conveying according to claim 1, wherein: the communication holes (6) are circumferentially arranged along the water inlet pipe (2).

7. The pipeline filtering device for integrated wheat water and fertilizer conveying according to claim 1, wherein: one end of the water inlet pipe (2) close to the water outlet pipe (1) is provided with a chamfer angle.

8. The pipeline filtering device for integrated wheat water and fertilizer conveying according to claim 1, wherein: a plurality of drain communication holes (9) and slide communication holes (10) are provided in the circumferential direction.

9. The pipeline filtering device for integrated wheat water and fertilizer conveying according to claim 1, wherein: the spring (3) is sleeved on the water outlet pipe (1), one end of the spring (3) is connected with the water outlet pipe (1), and the other end of the spring (3) is connected with the sliding pipe (4).