CN2407577Y - Pressure regulator for water saving irrigation - Google Patents

Abstract

The utility model provides a pressure regulator for the water saving irrigation, which is composed of a housing, an inlet stopper, a sealing ring, a pressure regulating element, a spring, a rubber film, a press cap and an outlet stopper, wherein, the inlet stopper and the sealing ring are positioned at the upriver part of the housing, and other elements are positioned at the downriver part of the housing. The utility model has the advantages that the downriver pressure basically keeps unchanged when the upriver pressure has great changes, and the uniformity degree of water irrigation can be enhanced. The inlet point of a branch pipe or a capillary pipe for a micro-irrigation or a spray-irrigation system can also be directly arranged on the upriver part of a spray head, and can also be used for the water supply systems of high-rise buildings or mountain cities.

Description

Pressure regulator for water-saving irrigation

The utility model relates to a pressure regulating device, in particular to a pressure regulator for irrigation.

In the irrigation system, when the pressure at the upstream end changes, the pressure at the downstream end will also change accordingly, causing the downstream water supply to be interrupted or uneven. Similar foreign products are composed of 13 components, the number of components is large, and the shell is designed in the form of an oblique three-way pipe, which increases the difficulty of production and increases the cost.

The purpose of the utility model is to fill up the domestic blank and provide a pressure regulator for water-saving irrigation. This device can be used at the inlet of branch pipes or capillary pipes in various water-saving irrigation systems, and can also be installed directly upstream of the nozzle. When the upstream pressure changes, the inlet pressure of branch pipes, capillary pipes or nozzles will not be affected by it and will remain constant. Improve the uniformity of irrigation, improve the utilization rate of irrigation water, and achieve the purpose of water saving.

The technical scheme of the utility model is as follows:

A pressure regulator for water-saving irrigation, comprising: a casing, an inlet plug, a sealing ring, a pressure regulating element, a spring, a rubber membrane, a gland, and an outlet plug; the upper and lower ends of the casing are thin-walled tubular structure, there is a partition wall in the middle, and a through hole for the upstream end of the pressure regulating element to pass through and move therein, and an inlet and exhaust hole on the outer wall of the downstream end; the pressure regulating element is T-shaped Structure, the cross-sectional area of the upstream end and the downstream end differ by a certain ratio, and a through hole is provided in the middle; the spring is arranged on the upstream end of the pressure regulating element, between the downstream end of the shell and the partition wall; the inlet plug is There is a hole through which the upstream end of the pressure regulating element can pass, and a water inlet hole is provided around the inlet plug; the sealing ring is arranged between the inlet plug and the partition wall; the rubber membrane is arranged on the pressure regulating element between the downstream end of the gland and the outlet plug; the outlet plug is fastened to the downstream end of the shell; the gland is fastened to the downstream end of the pressure regulating element.

The working principle of this device is: when the water pressure at the upstream end of the pressure regulating element increases, the downstream pressure will also increase accordingly, but because the area of the downstream end of the pressure regulating element is much larger than the area of the upstream end, the total pressure increase value of the downstream end is greater than that of the upstream end. The total pressure increase value at the end, the total pressure difference makes the pressure regulating element move to the upstream side, and at the same time compresses the spring, so that the gap between the pressure regulating element and the inlet plug decreases, and the head loss increases. vice versa. Therefore, it is ensured that when the upstream pressure of the pressure regulator changes greatly, the downstream pressure remains basically unchanged.

Compared with the existing products, the pressure regulator for water-saving irrigation of the utility model has the following outstanding advantages:

1. When the upstream pressure of the device changes greatly, the downstream pressure remains basically unchanged, which plays a role in pressure regulation, thereby improving the uniformity of irrigation, improving the utilization rate of water, and saving water resources.

2. Wide range of uses, it can be used at the inlet of branch pipe or capillary pipe of micro-irrigation or sprinkler irrigation system, and can also be installed directly upstream of the nozzle, so that the inlet pressure of the branch pipe, capillary pipe or nozzle of the system will not be affected by the change of upstream pressure. The device can also be used in the water supply system of high-rise buildings or mountain cities, so that the water supply of the upper layer is not affected by the water used in the lower layer.

3. The sealing ring is a wearing part, and it can be replaced after removing the inlet plug, which is convenient to use.

4. The structural design is simple and reasonable, the production is easy, and the cost is reduced.

Below in conjunction with accompanying drawing and embodiment, further describe the utility model in detail.

Fig. 1 is a sectional view of a pressure regulator for water-saving irrigation;

Fig. 2 is the left side view of a kind of inlet plug in Fig. 1;

Fig. 3 is the left side view of another kind of inlet plug in Fig. 1;

Figure 4 is a schematic diagram of a foreign pressure regulator.

Referring to Figure 4, similar foreign products have a large number of components, consisting of 13 components, which are oblique T-shaped tube 1', nut 2', washer 3', upper pressure regulating element 4', lower pressure regulating element 5', Rubber membrane 6', washer 7', washer 8', nut 9', spring 10', spring support 1 1', outer cover 12' and plug 13', because the inclined T-shaped pipe 1' is not easy to manufacture, so the manufacturing cost High and difficult.

Fig. 1 shows the structure of the pressure regulator for water-saving irrigation of the present invention. Referring to Fig. 1, the pressure regulator is composed of 8 components, which are shell 1, inlet plug 2, sealing ring 3, pressure regulating element 4, spring 5, gland 6, rubber membrane 7 and outlet plug 8. The upper and lower ends 11, 12 of the casing 1 are thin-walled tubular structures, and a partition wall 13 is provided in the middle, and a through hole 14 is provided on the partition wall 13, and the upstream end 41 of the pressure regulating element 4 passes through the through hole 14 and can be Moving, the outer wall of the downstream end 12 is provided with an intake and exhaust hole 15; the pressure regulating element 4 is a T-shaped structure, the cross-sectional area size of the upstream end 41 and the downstream end 42 differ by a certain ratio, and a through hole 43 is provided in the middle; the spring 5 is set On the upstream end 41 of the pressure regulating element 4, between the downstream end 12 of the casing and the partition wall 13; the inlet plug 2 is provided with a hole 21, the upstream end 41 of the pressure regulating element 4 passes through this hole 21, and the inlet plug There is a water inlet 22 around the head; the sealing ring 9 is set between the inlet plug 2 and the partition wall 13; the rubber membrane 7 is provided with a protrusion 71, which is set on the downstream end 42 of the pressure regulating element 4 and the gland 6 and Between the outlet plugs 8 ; the outlet plug 8 is fastened to the inner wall of the downstream end 12 of the casing 1 , and the gland 6 is fastened to the downstream end 42 of the pressure regulating element 4 .

The water inlet holes 22 on the inlet plug 2 can be evenly distributed, and can be distributed in an X shape, as shown in FIG. 2 , or in a Y shape, as shown in FIG. 3 .

The end face of the gland 6 and the downstream end 42 of the pressure regulating element 4 can be connected by riveting, welding or threading, and the large end side wall 81 of the outlet plug 8 and the port inner wall of the downstream end 12 of the casing 1 can also be connected by riveting, welding or threading. Connected so that the rubber membrane 7 is fixed therein.

The downstream end 12 of the housing 1 is in the shape of a wide-mouthed cup.

Shell 1, inlet plug 2, pressure regulating element 4, gland 6 and outlet plug 8 can be made of polyoxymethylene, nylon or metal.

When using for a period of time or water quality problems, the sealing ring 6 is worn out, and the inlet plug 2 can be removed to replace it, which is very convenient to use.

Claims (5)

1, a kind of water-saving irrigation pressure regulator is characterized in that it comprises: shell, import plug, sealing ring, voltage regulation component, spring, rubber membrane, gland and outlet plug; The two ends, upstream and downstream of described shell are the thin-walled tubular structure, and the middle part is provided with a partition wall, which is provided with a through hole that can pass and can therefrom move for the upstream extremity of voltage regulation component, and its downstream outer wall is provided with a port; Described voltage regulation component is a T type structure, and the sectional area size of upstream extremity and downstream differs certain proportion, and the centre is provided with through hole; Described spring is arranged on the upstream extremity of voltage regulation component, between the downstream and partition wall of shell; Described import plug is provided with the hole that can pass for the upstream extremity of voltage regulation component, and the periphery of import plug is provided with the inlet opening; Described sealing ring is arranged between import plug and the partition wall; Described rubber membrane is arranged between the downstream and gland and outlet plug of voltage regulation component; The downstream of described outlet plug and shell is fastening; Described gland and voltage regulation component downstream are fastening.

2, water-saving irrigation pressure regulator according to claim 1 is characterized in that the inlet opening on the described import plug evenly distributes.

3, water-saving irrigation pressure regulator according to claim 2 is characterized in that the inlet opening on the described import plug is the distribution of X type or is the distribution of Y type.

4, water-saving irrigation pressure regulator according to claim 1 is characterized in that described gland welds, rivets or is threaded with the voltage regulation component downstream end face, and described outlet plug welds, rivets or is threaded with the downstream port inwall of shell.

5, water-saving irrigation pressure regulator according to claim 1 is characterized in that the downstream of described shell is the wide mouth cup shape.

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