CN212564528U

CN212564528U - Flow control device for irrigation

Info

Publication number: CN212564528U
Application number: CN202021225650.3U
Authority: CN
Inventors: 孙益松; 周松松; 王向荣; 吴洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-02-19
Anticipated expiration: 2030-06-29

Abstract

The utility model relates to a irrigation flow control technical field specifically is a flow control device for irrigation, including the valve body, the inside sliding connection of valve body has the restriction valve, restriction valve step-down hole and restriction valve step-down hole run through the restriction valve have been seted up to restriction valve inside, restriction valve top joint is inside the backward flow chamber, the top fixedly connected with pressure-reducing spring of restriction valve, pressure-reducing spring's top swing joint has the valve gap, the inside backward flow pipe that is equipped with of valve gap, backward flow pipe bottom and backward flow chamber link up, the top of backward flow chamber link up and is connected with the pressure boost chamber, the pressure boost chamber top has seted up the backward flow mouth, the inside sliding joint of pressure boost chamber has the pressure boost valve; the beneficial effects are that: through the setting of valve body, restriction valve, water inlet and delivery port, prevented to lead to influencing the problem that output water flow changes because of the change of water pressure, reached the effect of automatic stable current-limiting.

Description

Flow control device for irrigation

Technical Field

The utility model relates to a relevant technical field of irrigation flow control specifically is a flow control device for irrigation.

Background

China is a big agricultural country, crop yield is high every year and is in the forefront of the world, so long-term progress is made on agricultural modernized roads, but many problems still exist in the aspect of irrigation, at present, furrow irrigation, flood irrigation and flood irrigation are still adopted in most places, the traditional irrigation modes not only waste time and labor, but also cause great waste on water resource, the irrigation effect is not satisfactory, and modernized micro-spray and drip irrigation modes are used in a few areas, but because the regional condition difference in China is large, the water supply conditions are different, so the existing irrigation mode cannot achieve the ideal effect of automatically controlling flow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flow control device 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 flow control device for water conservancy irrigation comprises a valve body, wherein a flow limiting valve is slidably connected inside the valve body, a flow limiting valve pressure reducing hole is formed inside the flow limiting valve and penetrates through the flow limiting valve, the top end of the flow limiting valve is clamped inside a backflow cavity, a pressure reducing spring is fixedly connected to the top of the flow limiting valve, the top end of the pressure reducing spring is integrally connected with a valve cover, a backflow guide pipe is arranged inside the valve cover, the bottom of the backflow guide pipe is communicated with the backflow cavity, the top of the backflow cavity is communicated with a pressure increasing cavity, a backflow port is formed in the top of the pressure increasing cavity, a pressure increasing valve is slidably clamped inside the pressure increasing cavity, an active pressure increasing spring is fixedly connected to the left side of the pressure increasing valve, a rotary propelling rod is fixedly connected to the left side of the active pressure increasing spring, a fixed block is connected to, one end of the rotary pushing rod is inserted into the pressurizing cavity through the fixing block, and the other end of the rotary pushing rod is fixedly welded with a manual control rotating wheel.

Preferably, the valve body is of a cylindrical structure, the outer surface of the cylinder is respectively provided with a water inlet and a water outlet, the horizontal position of the water inlet is higher than that of the water outlet, and the water inlet and the water outlet are respectively positioned on two sides of the valve body.

Preferably, the bottom in the valve body is provided with a pressure reducing guide pipe, and one end of the pressure reducing guide pipe is communicated with the water outlet guide pipe.

Preferably, the flow limiting valve is composed of three round tables with the same size and a cylinder, the cylinder sequentially penetrates through the centers of the three round tables, and the three round tables and the cylinder are welded into a whole.

Preferably, a flow guide hole connected with the water outlet conduit is formed in the cavity in the valve body, and the flow guide hole is a round hole with the diameter smaller than that of the upper round table of the flow limiting valve.

Preferably, the booster valve is in the shape of a combination of a left-side cylinder and a right-side cone.

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

1. the flow rate of the water outlet is controlled by the flow limiting valve, so that the water outlet rate is not influenced when the pressure of the water inlet is changed, and the flow control effect is achieved;

2. through the arrangement of the booster valve, the rotary push rod and the manual control rotating wheel, the whole automatic flow control device can be subjected to manual forced intervention, so that the operability of the device is improved, and the effect of improving the application range of the device is achieved;

3. due to the arrangement of the aperture of the flow guide hole, when the pressure of the water inlet is overlarge, the second circular ring on the flow limiting valve is infinitely close to the flow guide hole, so that the pressure of the water outlet is reduced, the accurate control of the flow is ensured, and the self-protection effect of the flow limiting device is achieved;

4. through the setting of backward flow mouth for because the rivers of too big and backward flow of water pressure can return water storage device through the backward flow mouth, reached the effect of water economy resource.

Drawings

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

FIG. 2 is a top view of a constrictor valve;

fig. 3 is a perspective view of a flow restriction valve.

In the figure: the water inlet and outlet valve comprises a valve body 1, a flow limiting valve 2, a water outlet 3, a pressure reducing guide pipe 4, a water inlet 5, a pressure reducing spring 6, a manual control rotating wheel 7, a rotary pushing rod 8, a fixed block 9, an active pressurizing spring 10, a pressurizing valve 11, a reflux opening 12, a reflux guide pipe 13, a valve cover 14, a pressure reducing hole 15 of the flow limiting valve, a reflux cavity 16, a pressurizing cavity 17, a water outlet guide pipe 18 and a flow guide hole 19.

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.

Referring to fig. 1 to 3, the present invention provides a technical solution: a flow control device for irrigation comprises a valve body 1, wherein a flow limiting valve 2 is slidably connected inside the valve body 1, a flow limiting valve pressure reducing hole 15 is formed inside the flow limiting valve 2, the flow limiting valve pressure reducing hole 15 penetrates through the flow limiting valve 2, the top end of the flow limiting valve 2 is clamped inside a backflow cavity 16, a pressure reducing spring 6 is fixedly connected to the top of the flow limiting valve 2, a valve cover 14 is integrally connected to the top end of the pressure reducing spring 6, a backflow guide pipe 13 is arranged inside the valve cover 14, the bottom of the backflow guide pipe 13 is communicated with the backflow cavity 16, a pressure increasing cavity 17 is communicated with the top of the backflow cavity 16, a backflow port 12 is formed in the top of the pressure increasing cavity 17, a pressure increasing valve 11 is slidably clamped inside the pressure increasing cavity 17, an active pressure increasing spring 10 is fixedly connected to the left side of the pressure increasing valve 11, and a rotary, the outer surface of the rotary push rod 8 is in threaded connection with a fixing block 9, the fixing block 9 is fixed on a valve cover 14 in a welded mode, one end of the rotary push rod 8 is connected into the pressurizing cavity 17 in an inserted mode through the fixing block 9, and the other end of the rotary push rod 8 is fixed with a manual control rotating wheel 7 in a welded mode.

Furthermore, the valve body 1 is of a cylindrical structure, the outer surface of the cylinder is respectively provided with a water inlet 5 and a water outlet 3, the horizontal position of the water inlet 5 is higher than that of the water outlet 3, and the water inlet 5 and the water outlet 3 are respectively positioned at two sides of the valve body 1.

Furthermore, the bottom of the valve body 1 is provided with a pressure reducing draft tube 4, and one end of the pressure reducing draft tube 4 is communicated with the water outlet duct 18.

Furthermore, the flow limiting valve 2 is composed of three round tables with the same size and a cylinder, the cylinder sequentially penetrates through the centers of the three round tables, and the three round tables and the cylinder are welded into a whole.

Furthermore, a flow guide hole 19 connected with the water outlet conduit 18 is formed in the inner cavity of the valve body 1, and the flow guide hole 19 is a round hole with the diameter smaller than that of the upper round table of the flow limiting valve 2.

Further, the pressure increasing valve 11 is in the shape of a combination of a left-side cylinder and a right-side cone.

The working principle is as follows: when crops are irrigated, water enters the valve body 1 through the water inlet 5, flows through the flow guide holes 19, enters the water outlet conduit 18, and then enters the external irrigation device through the water outlet 3. Wherein, when the output pressure of water inlet 5 increases, the velocity of flow of water increases, corresponding rivers pressure transmits the bottom to the restriction valve 2 through step-down honeycomb duct 4, when water pressure is greater than the elasticity of step-down spring 6, promote restriction valve 2 and rise, the distance between the round platform at restriction valve 2 middle part and water conservancy diversion hole 19 dwindles this moment, water flow through water conservancy diversion hole 19 reduces, thereby make the water flow that reaches delivery port 3 reduce, water pressure increases promptly and leads to the velocity of flow to become fast, reduce the flow when the velocity of flow becomes fast, thereby reach automatic control's effect. When the irrigation device needs to be pressurized, the rotating wheel 7 can be controlled manually through rotation, the rotary pushing rod 8 is pushed to move towards the inside of the pressurizing cavity 17, then the rotary pushing rod 8 pushes the pressurizing valve 11 to move rightwards through the acting force of the pressurizing spring 10, so that the communication between the pressurizing cavity 17 and the backflow guide pipe 13 is blocked, and the effect of forced pressurization through manual intervention is achieved.

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. The utility model provides a flow control device for irrigation, includes valve body (1), its characterized in that: the internal sliding connection of the valve body (1) is provided with a flow limiting valve (2), the flow limiting valve (2) is internally provided with a flow limiting valve pressure reducing hole (15), the flow limiting valve pressure reducing hole (15) penetrates through the flow limiting valve (2), the top end of the flow limiting valve (2) is clamped inside a backflow cavity (16), the top of the flow limiting valve (2) is fixedly connected with a pressure reducing spring (6), the top end of the pressure reducing spring (6) is integrally connected with a valve cover (14), a backflow guide pipe (13) is arranged inside the valve cover (14), the bottom of the backflow guide pipe (13) is communicated with the backflow cavity (16), the top of the backflow cavity (16) is communicated with a pressure increasing cavity (17), the top of the pressure increasing cavity (17) is provided with a backflow port (12), the pressure increasing valve (11) is clamped inside the pressure increasing cavity (17) in a sliding manner, and the left side of the pressure, the left side fixedly connected with rotatory pushing ram (8) of initiative pressure boost spring (10), rotatory pushing ram (8) surface threaded connection has fixed block (9), and fixed block (9) welded fastening is on valve gap (14), the one end of rotatory pushing ram (8) is passed through fixed block (9) and is pegged graft in pressure boost chamber (17), the other end welded fastening of rotatory pushing ram (8) has manual control runner (7).

2. A flow control device for irrigation as claimed in claim 1, wherein: the valve body (1) is of a cylindrical structure, a water inlet (5) and a water outlet (3) are formed in the outer surface of the cylinder respectively, the horizontal position of the water inlet (5) is higher than the water outlet (3), and the water inlet and the water outlet are located on two sides of the valve body (1) respectively.

3. A flow control device for irrigation as claimed in claim 1, wherein: the bottom in the valve body (1) is provided with a pressure reducing guide pipe (4), and one end of the pressure reducing guide pipe (4) is communicated with a water outlet guide pipe (18).

4. A flow control device for irrigation as claimed in claim 1, wherein: the flow limiting valve (2) is composed of three round tables with the same size and a cylinder, the cylinder penetrates through the centers of the three round tables in sequence, and the three round tables and the cylinder are welded into a whole.

5. A flow control device for irrigation as claimed in claim 1, wherein: the inner cavity of the valve body (1) is provided with a flow guide hole (19) connected with the water outlet conduit (18), and the flow guide hole (19) is a round hole with the diameter smaller than that of a round table on the flow limiting valve (2).

6. A flow control device for irrigation as claimed in claim 5, wherein: the booster valve (11) is in the shape of a combination of a left cylinder and a right cone.