CN219248809U

CN219248809U - Backwash anti-blocking low-flow dropper

Info

Publication number: CN219248809U
Application number: CN202320903216.3U
Authority: CN
Inventors: 武军
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-06-27
Anticipated expiration: 2033-04-21

Abstract

The utility model discloses a backwash anti-blocking low-flow dropper, which comprises a tube body, wherein a separation layer is axially arranged in the middle of the tube body and is used for dividing the inner space of the tube body into two different cavities; the separation layer comprises a water-absorbing foam layer, and two surfaces of the water-absorbing foam layer facing the two cavities are respectively covered with a filter layer; in addition, two through holes are symmetrically formed in the pipe wall of the pipe body at positions where water supply is needed, and a water absorption wire harness is correspondingly arranged; the two penetrating holes are formed in the position where the water absorbing foam layer is located, each water absorbing wire harness penetrates through the corresponding two penetrating holes, two ends of the water absorbing wire harness are located outside the pipe body, and the middle of the water absorbing wire harness is fixed in the water absorbing foam layer in the pipe body.

Description

Backwash anti-blocking low-flow dropper

Technical Field

The utility model relates to the technical field of water-saving irrigation, in particular to a backwash anti-blocking low-flow dropper.

Background

Drip irrigation is a high-efficiency water-saving technology in the field of water-saving irrigation, which can save more than 90 percent of water compared with furrow irrigation, can accurately apply water and nutrients to the roots of crops by matching with a water and fertilizer integrated device, the effects of saving water and increasing yield are achieved, so that the method is increasingly widely applied to the fields of facility agriculture, gardening, urban green landscapes and desert areas.

However, the existing drip irrigation pipeline structure is poor in anti-blocking performance, and in use, the drip emitters in the drip tubes are blocked and are difficult to recover due to the fact that particulate matters, microorganisms and the like in water are not treated up to standard, so that the operation cost is high, the maintenance management difficulty is high, and the drip irrigation pipeline structure becomes a primary obstacle for limiting the wider popularization and use of the drip irrigation technology.

The existing drip irrigation drip tube adopts a labyrinth passage and other design structures for realizing low flow, but the water yield of the drip head still has 2-3 liters/hour, and the drip irrigation drip tube still has a water supply mode taking gravity water as a main factor in soil, and is not matched with the water requirement law of most plants by the capillary water absorption effect between the soil and root systems, so that the problems of easy hardening of the soil, partial saline-alkali precipitation, and the need of a timing intermittent opening and closing system are caused.

Disclosure of Invention

In order to solve the problems in the background art, the utility model adopts the following technical scheme:

the back flushing anti-blocking low-flow dropper comprises a tube body, wherein a separation layer is axially arranged in the middle of the tube body and used for dividing the inner space of the tube body into two different cavities;

the separation layer comprises a water-absorbing foam layer, and two surfaces of the water-absorbing foam layer facing the two cavities are respectively covered with a filter layer;

in addition, two through holes are symmetrically formed in the pipe wall of the pipe body at positions where water supply is needed, and a water absorption wire harness is correspondingly arranged;

the two penetrating holes are formed in the position where the water absorbing foam layer is located, each water absorbing wire harness penetrates through the corresponding two penetrating holes, two ends of the water absorbing wire harness are located outside the pipe body, and the middle of the water absorbing wire harness is fixed in the water absorbing foam layer in the pipe body.

In some embodiments, the device further comprises two valves arranged at two ends of the tube body;

each valve comprises a valve body, a valve core and a water stop plate, wherein the valve core and the water stop plate are arranged in the valve body;

the water stop plate is fixedly arranged in the middle of one end, facing the pipe body, of the valve body, and is fixedly connected with the separation layer in the pipe body;

the water-stop plate is used for dividing a water passing port of the valve, which is close to one end of the pipe body, into two parts and is respectively communicated with two cavities in the pipe body;

the valve core can rotate in a certain range in the valve body, so that two parts of water passing ports of the valve, which are close to one end of the pipe body, can be switched between the following different states: the two parts of water passing ports are opened, any one water passing port is opened, the other water passing port is closed, and the two parts of water passing ports are closed.

In some embodiments, the valve core is of a cylindrical structure or a spherical structure, a through hole is formed in the middle of the valve core, the through hole of the valve core is of a double-horn shape, the middle of the through hole of the valve core is narrow, the two ends of the through hole of the valve core are wide, and the valve core can drive the through hole of the valve core to rotate in the valve body so as to realize switching of different states;

the waterproof board is formed with the notch towards the middle part of body one end, and the size of notch with the size of separate layer is corresponding, makes the tip of separate layer can imbed in the notch, thereby realizes the zonal connection of waterproof board and separate layer.

In some embodiments, the tube is made of a PE tube, the filter layer is made of a micro-nano porous material, the water absorbent strands are made of a hydrophilic fiber material, and the water absorbent foam layer is made of an open cell foam.

In some embodiments, the separator layer is entirely a structure with thick ends and thin middle.

In some embodiments, the water absorbent strands have a length of 10-50mm and a diameter of 2-6mm; the diameter of the pipe body is 16-20mm, and the thickness of the pipe wall is 0.5-2mm; the thickness of the two ends of the separation layer is 7-9mm, and the thickness of the middle part is 5-7mm.

Compared with the prior art, the utility model has the beneficial effects that:

the backwash anti-blocking low-flow dropper provided by the utility model comprises the filter layer and the water-absorbing foam layer, wherein the filter layer can filter out particles and microorganisms, the water-absorbing foam layer can form an aqueous layer based on a capillary principle, and the aqueous layer is led out of the dropper through a water-absorbing wire bundle to form a capillary water supply microsystem, so that the water yield is controllable, the water saving efficiency is improved, the granular structure around soil/root system is improved, the water supply according to needs is realized, and the growth of crops is better promoted; and the inner space of the pipe body is divided into two different cavities, so that when the drip tube is used, the filter layer can be backwashed as long as water flows in the two cavities have water pressure difference, the anti-blocking performance of the drip tube is greatly improved, the use effect is improved, and the system cost and the maintenance cost are reduced.

Drawings

FIG. 1 is a schematic view of a radial cross section of a tube body in a backwash anti-clogging low flow dropper provided by the utility model;

FIG. 2 is a schematic axial cross-section corresponding to C-C in FIG. 1;

FIG. 3 is a schematic illustration of the tube body mated with a valve;

fig. 4 a-4 c are schematic diagrams of the backwash anti-blocking low flow dropper provided by the utility model in different working modes.

Reference numerals illustrate:

1. a tube body; 2. a filter layer; 3. a water absorbing wire harness; 4. a water-absorbing foam layer; 5. a valve; 51. a valve body; 52. a valve core; 53. and a water stop plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present utility model easy to understand, the following further describes how the present utility model is implemented with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 and 2, the utility model provides a backwash anti-blocking low-flow dropper, which comprises a tube body 1, wherein a separation layer is axially arranged in the middle part of the tube body 1 and is used for dividing the inner space of the tube body 1 into two different cavities; the separation layer comprises a water-absorbing foam layer 4, and two surfaces of the water-absorbing foam layer 4 facing the two cavities are respectively covered with a filter layer 2; in addition, two through holes are symmetrically formed in the pipe wall of the pipe body 1 at positions where water supply is needed, and a water absorption wire harness 3 is correspondingly arranged; the two through holes are formed in the position of the water-absorbing foam layer 4, each water-absorbing wire harness 3 passes through the corresponding two through holes, two ends of the water-absorbing wire harness 3 are located outside the pipe body 1, and the middle part of the water-absorbing wire harness 3 is fixed in the water-absorbing foam layer 4 in the pipe body 1.

It will be appreciated that for convenience in showing the structure, in fig. 1 and 2, the inside of the tube body 1 is divided into an upper part and a lower part; in actual use, the pipe body 1 is not necessarily arranged into an upper part and a lower part as shown in the figure, but also can be arranged into a left part and a right part or obliquely, and the normal use of the pipe body is not affected.

In FIG. 2, when the water flows at the upper pressure F ^A Pressure F with lower part _B Different pressure differences can be formed, so that impurities on the surface of the backwash filter layer 2 are deposited, and the filter layer 2 is prevented from being blocked.

With further reference to fig. 3, the backwash anti-blocking low-flow dropper preferably further comprises two valves 5 arranged at two ends of the tube body 1, and the connection parts of the tube body 1 and the ends of the valves 5 are in sealing connection; each valve 5 comprises a valve body 51, a valve core 52 and a water stop 53 which are arranged in the valve body 51; the water stop plate 53 is fixedly arranged in the middle of one end, facing the pipe body 1, of the valve body 51, and the water stop plate 53 is fixedly connected with the separation layer in the pipe body 1; the water stop plate 53 is used for dividing the water passing port of the valve 5 near one end of the pipe body 1 into two parts, and is respectively communicated with two cavities in the pipe body 1; the valve core 52 can rotate within a certain range in the valve body 51, so that the two-part water passing port of the valve 5 near one end of the pipe body 1 can be switched between the following different states: the two parts of water passing ports are opened, any one water passing port is opened, the other water passing port is closed, and the two parts of water passing ports are closed; for convenience of description, the above three states are hereinafter referred to as an on, a half-on, and an off state, respectively.

Preferably, the valve core 52 has a cylindrical structure or a spherical structure with a through hole formed in the middle, and the through hole of the valve core 52 has a double-horn shape with a narrow middle and wide two ends, and the valve core 52 can drive the through hole to rotate in the valve body 51 so as to realize switching of different states;

the middle part of the waterproof board 53 towards one end of the pipe body 1 is provided with a notch, and the size of the notch corresponds to that of the separation layer, so that the end part of the separation layer can be embedded into the notch, and the waterproof board 53 is tightly connected with the separation layer.

In the embodiment shown in fig. 3, the spool 52 is in an open state in the case shown in fig. 3; if the valve core 52 rotates 45 degrees, the valve core is in a half-open state, and the rotation of 45 degrees towards different directions corresponds to the half-open state of different two parts; if the spool 52 rotates 90 °, it is closed.

The working principle of the backwash anti-blocking low-flow dropper provided by the utility model is as follows:

on the one hand, when irrigation water or water fertilizer integrated liquid medium passes through the inside of the pipe body 1, particulate matters and microorganisms are blocked outside the filter layer 2 due to the blocking effect of the micron/nano-level filter layer 2, so that blockage below the filter layer 2 is avoided; the small molecular liquid medium is actively absorbed under the capillary force action of the lower water-absorbing foam layer 4, so that an aqueous layer is formed in the water-absorbing foam layer 4, the moisture in the aqueous layer is in a controlled state, the moisture or liquid medium in the aqueous layer is slowly released out of the pipe body 1 through the water-absorbing wire bundle 3, and the soil and plant root systems clustered by the water-absorbing wire bundle 3 absorb the exuded moisture or liquid nutrient medium through the capillary force action. When the outside water is sufficient, the pressure difference between the inner capillary tube and the outer capillary tube of the tube body 1 is reduced or eliminated, the water seepage process is stopped temporarily, and the water seepage and water absorption process is restarted until the next capillary pressure difference is formed. The circulation is repeated, the self-adaptive water control effect of the pipe body 1 is achieved, the water and nutrition requirements of plants are met to the maximum extent, and water is effectively and saved.

On the other hand, the dropper is applied in the field, two valves 5 are arranged at the head end and the tail end of the pipe body 1, one valve 5 is connected with the water inlet end, and the other valve 5 is connected with the water outlet end; referring to fig. 4 a-4 c, the arrows indicate the direction of water flow, wherein the left valve 5 is connected to the water inlet end, and the right valve 5 is connected to the water outlet end.

In fig. 4a, the left valve 5 is open and the right valve 5 is closed, which is the normal water supply mode. The inside pressurized water flow that is formed with of body 1, rivers are permeated filter layer 2 and are reached the foam layer 4 that absorbs water, through the capillary effect of water absorbent pencil 3, with intraductal rivers slow release to outside soil and root system, form inside and outside integrative water supply and water absorption system, realize that the plant absorbs water as required.

In fig. 4b, the left valve 5 is half-opened, and the right valve 5 is half-opened toward the other side, corresponding to the backwash mode of one side (upper side in the drawing). After the dropper runs for a period of time, the dirt accumulated on the surface of the filter layer 2 influences the water yield, at this time, two valves 5 can be respectively adjusted as shown in fig. 4b, the water outlet at the lower part of the pipeline in the figure is closed, the upper running water is released, and a running water pressure difference is formed, so that the dirt of the upper filter layer 2 can be backflushed, and the water permeability of the upper part is recovered.

In fig. 4c, the back flushing mode corresponding to the other side (lower side in the drawing) is the same as that in fig. 4b, and will not be described again here.

Through the arrangement, the inside of the pipe body 1 can be cleaned by adopting the back flushing modes shown in fig. 4b and 4c at regular intervals so as to bring out solid particles attached to the filter layer 2, thereby avoiding the blockage of the filter layer 2, enabling the filter layer 2 to keep the water filtering performance for a long time and prolonging the service life.

In one embodiment, the tube body 1 is made of a PE pipe, the filter layer 2 is made of a micro-nano pore material, the water-absorbing wire bundle 3 is made of a hydrophilic fiber material, and the water-absorbing foam layer 4 is made of an open-cell foam.

The pipe body 1, the filter layer 2 and the water-absorbing foam layer 4 can be produced by the existing coextrusion process, so that the composite structure of the pipeline is realized; the co-extrusion pipeline is formed by continuous extrusion, the length is not limited, and the length is determined according to the field laying requirement. The water absorbing wire bundle 3 can be implanted by adopting a conventional wire implantation mechanical implantation or a manual tool and is arranged at a proper position of the pipe body 1; the water-absorbing wire bundle 3 can be made of hydrophilic nylon or polyester fiber materials with good ageing resistance, tensile strength and hydrophilicity, and has long service life and good water control effect.

Preferably, the separation layer is entirely of a structure having thick ends and thin middle.

In one embodiment, the length of the water absorbing wire bundle 3 is 10-50mm, the diameter d is 2-6mm, and the length and the diameter d of the water absorbing wire bundle 3 can be determined by the water amount requirement in the application environment; the diameter D of the pipe body 1 is 16-20mm, and the thickness delta of the pipe wall is 0.5-2mm; the thickness W of the two ends of the separation layer is 7-9mm, and the thickness W1 of the middle layer is 5-7mm; in addition, the distance L between two adjacent water absorbing strands 3 may be determined by the plant spacing of the actual desired application scenario.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. The back flushing anti-blocking low-flow dropper is characterized by comprising a tube body (1), wherein a separation layer is axially arranged in the middle part of the tube body (1) and used for dividing the inner space of the tube body (1) into two different cavities;

the separation layer comprises a water absorption foam layer (4), and two surfaces of the water absorption foam layer (4) facing the two cavities are respectively covered with a filter layer (2);

in addition, two through holes are symmetrically formed in the pipe wall of the pipe body (1) at positions where water supply is needed, and a water absorption wire harness (3) is correspondingly arranged;

the two crossing holes are formed in the positions of the water-absorbing foam layers (4), each water-absorbing wire harness (3) penetrates through the corresponding two crossing holes, two ends of each water-absorbing wire harness (3) are located outside the pipe body (1), and the middle part of each water-absorbing wire harness (3) is fixed in the water-absorbing foam layer (4) in the pipe body (1).

2. The backwash anti-clogging low flow dropper as claimed in claim 1, further comprising two valves (5) provided at both ends of the tube body (1);

each valve (5) comprises a valve body (51), a valve core (52) and a water stop plate (53) which are arranged in the valve body (51);

the water-stop plate (53) is fixedly arranged in the middle of one end, facing the pipe body (1), of the valve body (51), and the water-stop plate (53) is fixedly connected with the separation layer in the pipe body (1);

the water-stop plate (53) is used for dividing a water passing port of the valve (5) close to one end of the pipe body (1) into two parts, and the two parts are respectively communicated with two cavities in the pipe body (1);

the valve core (52) can rotate in a certain range in the valve body (51), so that the two parts of water passing ports of the valve (5) close to one end of the pipe body (1) can be switched between the following different states: the two parts of water passing ports are opened, any one water passing port is opened, the other water passing port is closed, and the two parts of water passing ports are closed.

3. The backwash anti-clogging low flow dropper as claimed in claim 2, wherein the valve core (52) is of a cylindrical structure or a spherical structure with a through hole formed in the middle, the through hole of the valve core (52) is of a double horn shape with a narrow middle and wide two ends, and the valve core (52) can drive the through hole to rotate in the valve body (51) so as to realize switching of different states;

the waterproof board (53) is formed with the notch towards the middle part of body (1) one end, and the size of notch is corresponding with the size of separate layer for the tip of separate layer can imbed in the notch, thereby realizes the zonal connection of waterproof board (53) and separate layer.

4. The backwash anti-clogging low flow dropper as claimed in claim 1, wherein the tube body (1) is made of PE pipe, the filter layer (2) is made of micro-nano pore material, the water-absorbing wire harness (3) is made of hydrophilic fiber material, and the water-absorbing foam layer (4) is made of open cell foam.

5. The backwash anti-clogging low flow dropper of claim 1, wherein the separation layer is entirely of a structure having thick ends and thin middle.

6. The backwash anti-clogging low flow dropper as claimed in claim 5, wherein the length of said water suction harness (3) is 10-50mm and the diameter is 2-6mm; the diameter of the pipe body (1) is 16-20mm, and the pipe wall thickness is 0.5-2mm; the thickness of the two ends of the separation layer is 7-9mm, and the thickness of the middle part is 5-7mm.