CN210600314U

CN210600314U - Check valve for irrigation

Info

Publication number: CN210600314U
Application number: CN201921801191.6U
Authority: CN
Inventors: 王志平
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-05-22
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses a check valve for irrigation, including cutoff chamber and damper, the inside wall top fixedly connected with fixed block of cutoff chamber, the lateral wall cover of fixed block is equipped with first spring, the top of first spring welds in the inside wall top of cutoff chamber, the outer lane cover that the fixed block was kept away from to first spring is equipped with the case, the lateral wall sliding connection of case is in the inside of cutoff chamber, coupling mechanism is installed to the bottom of case; after the pipeline infusion was accomplished, liquid pressure reduces, makes the case descend perpendicularly, makes first rubber slab and second rubber slab contact, slows down the vibrations power, and simultaneously, the extrusion force passes through the base, connecting rod and piston and applys pressure to the second spring, makes the second spring produce deformation, and the second spring of deformation can turn into elastic potential energy with the extrusion vibrations, and then slows down the vibrations power, slows down the rigid collision between case and the pipeline, protects case and pipeline, and then prolongs the life of check valve.

Description

Check valve for irrigation

Technical Field

The utility model relates to a irrigation technical field specifically is a check valve for irrigation.

Background

Irrigation, namely, irrigation in which water is delivered to agricultural land by artificial facilities to supplement soil moisture and improve the growth and development conditions of crops. Under specific conditions, the irrigation can also reduce frost damage, improve soil cultivation performance, dilute soil salt and improve field microclimate. According to different irrigation water sources and irrigation water qualities, the method can be divided into surface water irrigation, underground water irrigation, surface water and underground water combined application, sewage irrigation, salt water irrigation, fertilizer water irrigation, flood diversion and silt irrigation and the like. According to the irrigation technology, the irrigation can be divided into ground irrigation, underground irrigation, spray irrigation, micro-irrigation (including drip irrigation, micro-spray irrigation and the like), local irrigation, water-saving irrigation and the like. In order to realize scientific water consumption, an irrigation guarantee rate is selected and an irrigation system is formulated according to the water demand and water demand time of crops, the effective rainfall, the soil water condition and the hydrological condition. Irrigation systems are infrastructure for implementing irrigation and can be divided into channel irrigation systems and pipe irrigation systems. The pipe irrigation system is a general term for various levels of pipes, coupling fittings, gate valves, etc. which take water from a water source and deliver and distribute the water to fields or water supply points step by step. Wherein, including the check valve again in the gate valve, the liquid refluence of carrying in the pipeline can be prevented to the check valve, and is very important. The existing check valve for water conservancy irrigation is provided with a rotary opening type check valve and a vertical lifting type check valve, wherein a valve core used in the vertical lifting type check valve is generally in rigid contact with a pipeline, after infusion in the pipeline is completed, the valve core can be in rigid collision with the pipeline, and the check valve is easy to wear and tear and has a lower service life under long-term use, so that the effect of flow interception is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a check valve for irrigation to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a check valve for water conservancy irrigation comprises a cutoff chamber and a damping mechanism, wherein a fixed block is fixedly connected to the top of the inner side wall of the cutoff chamber, a first spring is sleeved on the outer side wall of the fixed block, the top end of the first spring is welded to the top of the inner side wall of the cutoff chamber, a valve core is sleeved on the outer ring of the first spring, which is far away from the fixed block, the outer side wall of the valve core is slidably connected to the inside of the cutoff chamber, a connecting mechanism is installed at the bottom of the valve core, the damping mechanism comprises a connecting rod, a piston, a second spring, grooves, a clamping seat, a cavity, a first rubber plate and a second rubber plate, the top of the clamping seat is provided with three grooves which are uniformly distributed, the grooves are slidably connected to the inside of the grooves, the piston is welded to the top of the second spring, the connecting rod is welded to the, the bottom of the connecting mechanism and the top of the clamping seat are provided with cavities, and the top end of the connecting rod penetrates through the clamping seat and extends to the inside of the cavity.

As further preferable in the present technical solution: the connecting mechanism comprises a base, a cross-shaped through hole and a rod body, the bottom of the base is welded at the top of the connecting rod, the top of the base is fixedly connected with the rod body, the outer side wall of the rod body is arranged on the inner ring sleeve of the first spring, the bottom end of the first spring is welded at the top of the base, and the cross-shaped through hole is formed in the outer side wall of the rod body.

As further preferable in the present technical solution: the bottom end of the intercepting chamber is communicated with a bent pipe, one side of the intercepting chamber is communicated with a transverse pipe, and filter screens are mounted at the ends, far away from the intercepting chamber, of the bent pipe and the transverse pipe.

As further preferable in the present technical solution: and one ends of the bent pipe and the transverse pipe, which are far away from the flow interception chamber, are welded with flange connection discs.

As further preferable in the present technical solution: and a second rubber plate is bonded at one end of the elbow close to the flow interception chamber.

As further preferable in the present technical solution: the outer side wall of the clamping seat is bonded with a first rubber plate, and the outer side wall of the valve core is provided with a through hole.

Compared with the prior art, the beneficial effects of the utility model are that: after the pipeline infusion was accomplished, liquid pressure reduces, makes the case descend perpendicularly, makes first rubber slab and second rubber slab contact, slows down the vibrations power, and simultaneously, the extrusion force passes through the base, connecting rod and piston and applys pressure to the second spring, makes the second spring produce deformation, and the second spring of deformation can turn into elastic potential energy with the extrusion vibrations, and then slows down the vibrations power, slows down the rigid collision between case and the pipeline, protects case and pipeline, and then prolongs the life of check valve.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the connection mechanism of the present invention;

fig. 3 is a schematic structural diagram of the damping mechanism of the present invention.

In the figure: 1. bending the pipe; 2. filtering with a screen; 3. a flange connecting plate; 4. a shut-off chamber; 5. a fixed block; 6. a first spring; 7. a valve core; 8. a through hole; 9. a transverse tube; 10. a connecting mechanism; 11. a base; 12. a cross-shaped through hole; 13. a rod body; 20. a damping mechanism; 21. a connecting rod; 22. a piston; 23. a second spring; 24. a groove; 25. a card holder; 26. a cavity; 27. a first rubber sheet; 28. a second rubber sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: a check valve for irrigation comprises a cutoff chamber 4 and a damping mechanism 20, wherein the top of the inner side wall of the cutoff chamber 4 is fixedly connected with a fixed block 5, the outer side wall of the fixed block 5 is sleeved with a first spring 6, the top end of the first spring 6 is welded to the top of the inner side wall of the cutoff chamber 4, the outer ring of the first spring 6, which is far away from the fixed block 5, is sleeved with a valve core 7, the outer side wall of the valve core 7 is connected to the inside of the cutoff chamber 4 in a sliding manner, a connecting mechanism 10 is installed at the bottom of the valve core 7, the damping mechanism 20 comprises a connecting rod 21, a piston 22, a second spring 23, a groove 24, a clamping seat 25, a cavity 26, a first rubber plate 27 and a second rubber plate 28, the top of the clamping seat 25 is provided with three grooves 24 which are uniformly distributed, the inside of the groove 24 is connected with the second spring 23 in a sliding manner, the piston 22 is welded at, the bottom of the connecting mechanism 10 and the top of the clamping seat 25 are opened with a cavity 26, and the top end of the connecting rod 21 extends to the inside of the cavity 26 through the clamping seat 25.

In this embodiment, specifically: coupling mechanism 10 includes base 11, cross through-hole 12 and the body of rod 13, the bottom of base 11 welds in the top of connecting rod 21, the top fixedly connected with body of rod 13 of base 11, the lateral wall of the body of rod 13 is located to the inner circle cover of first spring 6, the bottom of first spring 6 welds in the top of base 11, cross through-hole 12 has been seted up to the lateral wall of the body of rod 13, when liquid backward flow in the check valve, liquid makes case 7 move down through cross through-hole 12 applys pressure to case 7.

In this embodiment, specifically: the bottom intercommunication of intercepting room 4 has return bend 1, and one side intercommunication of intercepting room 4 has violently the pipe 9, and filter screen 2 is all installed to return bend 1 and the one end of violently managing 9 and keeping away from intercepting room 4, and filter screen 2's setting can prevent that debris granule from getting into the check valve, prevents to block up.

In this embodiment, specifically: the bent pipe 1 and the end, far away from the cutoff chamber 4, of the transverse pipe 9 are welded with a flange connection plate 3, and the flange connection plate 3 is used for being connected with a water pipe.

In this embodiment, specifically: the second rubber plate 28 is bonded to one end of the elbow 1 close to the shut-off chamber 4, and the first rubber plate 27 and the second rubber plate 28 work to reduce the vibration force applied to the pipeline by the valve core 7, the base 11 and the clamping seat 25.

In this embodiment, specifically: the outer side wall of the clamping seat 25 is bonded with a first rubber plate 27, the outer side wall of the valve core 7 is provided with a through hole 8, and liquid flowing into the through hole 8 can assist the valve core 7 and the clamping seat 25 to extrude downwards.

Working principle or structure principle, when in use, when liquid in the check valve flows rightwards, the liquid applies pressure to the clamping seat 25, the clamping seat 25 drives the base 11 and the valve core 7 to move upwards to extrude the first spring 6, so that the liquid flows into the transverse pipe 9 through the intercepting chamber 4, when the liquid stops conveying, the liquid flows back, the backflow liquid flows into the upper part of the intercepting chamber 4 through the through hole 8 and the cross-shaped through hole 12, and further extrudes the valve core 7 and the base 11 downwards, the base 11 drives the connecting rod 21 and the piston 22 to move downwards to extrude the second spring 23, the extruded vibration energy is converted into elastic potential energy by the deformed second spring 23 to slow down the extrusion force, the downwards moving clamping seat 25 drives the first rubber plate 27 to impact the second rubber plate 28, the first rubber plate 27 and the second rubber plate 28 can slow down the impact force, and simultaneously the clamping seat 25, the first rubber plate 27 and the second rubber plate 28 block the top end of the elbow pipe 1, preventing liquid from flowing back through the check valve.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A check valve for irrigation, includes shut-off chamber (4) and damper (20), its characterized in that: the damping device is characterized in that a fixed block (5) is fixedly connected to the top of the inner side wall of the intercepting chamber (4), a first spring (6) is sleeved on the outer side wall of the fixed block (5), the top end of the first spring (6) is welded to the top of the inner side wall of the intercepting chamber (4), a valve core (7) is sleeved on the outer ring of the first spring (6) far away from the fixed block (5), the outer side wall of the valve core (7) is connected to the inside of the intercepting chamber (4) in a sliding mode, a connecting mechanism (10) is installed at the bottom of the valve core (7), the damping mechanism (20) comprises a connecting rod (21), a piston (22), a second spring (23), grooves (24), clamping seats (25), cavities (26), a first rubber plate (27) and a second rubber plate (28), the three grooves (24) which are uniformly distributed are formed in number are formed in the top of the clamping seats (25), and the second, the top welding of second spring (23) has piston (22), the top welding of piston (22) has connecting rod (21), install in the bottom of coupling mechanism (10) the top of connecting rod (21), cavity (26) have been seted up to the bottom of coupling mechanism (10) and the top of cassette (25), the top of connecting rod (21) runs through the inside that cassette (25) extended to cavity (26).

2. The check valve for water conservancy irrigation according to claim 1, wherein: coupling mechanism (10) include base (11), cross through-hole (12) and the body of rod (13), the bottom of base (11) welds in the top of connecting rod (21), the top fixedly connected with body of rod (13) of base (11), the lateral wall of the body of rod (13) is located to the inner circle cover of first spring (6), the bottom welding of first spring (6) is in the top of base (11), cross through-hole (12) have been seted up to the lateral wall of the body of rod (13).

3. The check valve for water conservancy irrigation according to claim 1, wherein: the bottom of flow intercepting room (4) communicates there is return bend (1), one side intercommunication of flow intercepting room (4) has violently pipe (9), filter screen (2) are all installed to return bend (1) and violently pipe (9) one end of keeping away from flow intercepting room (4).

4. A check valve for irrigation as claimed in claim 3, wherein: and one ends of the bent pipe (1) and the transverse pipe (9) far away from the cutoff chamber (4) are welded with flange connection discs (3).

5. A check valve for irrigation as claimed in claim 3, wherein: and a second rubber plate (28) is bonded at one end of the elbow (1) close to the cutoff chamber (4).

6. The check valve for water conservancy irrigation according to claim 1, wherein: a first rubber plate (27) is bonded on the outer side wall of the clamping seat (25), and a through hole (8) is formed in the outer side wall of the valve core (7).