CN219432542U - Pressure-adjustable air safety valve for irrigation - Google Patents

Abstract

The utility model discloses an air safety valve for pressure-adjustable irrigation, which comprises a first shell, a second shell and a compression spring, wherein the first shell is provided with an air inlet and an air outlet; the second shell is connected with the first shell, a diaphragm seat and a disc seat are arranged on the inner wall of the second shell, a first diaphragm is placed on the diaphragm seat, a through hole is formed in the first diaphragm, and the first diaphragm is in sealing contact with the inner wall of the second shell; a disc is placed on the disc seat, and a gap is formed between the disc and the inner wall of the second shell; a pre-tightening spring is arranged on the disc, a second diaphragm is arranged on the upper part of the pre-tightening spring, and the second diaphragm is tightly contacted with the first diaphragm under the action of the pre-tightening spring so as to seal the through hole; one end of the compression spring is fixed on the top wall of the first shell, the other end of the compression spring is fixed on the first diaphragm, and the first diaphragm is tightly attached to the diaphragm seat under the action of the compression spring. The utility model can automatically adjust the pressure according to the actual situation, and does not need to select air safety valves with different pressures according to different pipeline pressure requirements, thereby saving time and manufacturing cost.

Description

Pressure-adjustable air safety valve for irrigation

Technical Field

The utility model relates to the technical field of agricultural irrigation, in particular to an air safety valve for pressure-adjustable irrigation.

Background

The related technology indicates that the water consumption for agricultural planting is more than half of the total water consumption in China, and in the aspect of agricultural irrigation, the current irrigation engineering is developed from the traditional canal irrigation flood irrigation to full-automatic integrated irrigation, and the irrigation equipment or engineering needs to be paved and installed with pipelines without exception. When the pipelines are installed, almost all the pipelines need to be installed with air safety valves, and the valves are mainly used for adjusting the air pressure inside and outside the pipelines and play a role in protecting the pipelines. The pressure of the traditional air safety valve is constant, and a user needs to select the protection valve with the corresponding pressure according to the requirement, so that the cost waste and the trouble of selection are easily caused.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the pressure-adjustable air safety valve for irrigation, which can automatically adjust the pressure according to actual conditions, does not need to select air safety valves with different pressures according to different pressure requirements, can save the trouble of selection, and saves the manufacturing cost.

The utility model relates to an air safety valve for pressure-adjustable irrigation, which comprises a first shell, a second shell and a compression spring, wherein the first shell is provided with an air inlet and an air outlet; the second shell is connected with the first shell, a diaphragm seat and a disc seat are sequentially arranged on the inner wall of the second shell from top to bottom, a first diaphragm is placed on the diaphragm seat, a plurality of through holes are formed in the first diaphragm, and the side wall of the first diaphragm is in sealing contact with the inner wall of the second shell; a disc is placed on the disc seat, and a set gap is formed between the disc and the inner wall of the second shell; the disc upper part is provided with a pre-tightening spring, the pre-tightening spring upper part is provided with a second diaphragm, and the second diaphragm is tightly contacted with the bottom wall of the first diaphragm under the thrust of the pre-tightening spring so as to seal the through hole of the second diaphragm; the compression spring is arranged in the first shell and the second shell, one end of the compression spring is fixed at the top of the first shell, the other end of the compression spring is fixed on the first diaphragm, and the first diaphragm is tightly attached to the diaphragm seat under the thrust of the compression spring.

The air safety valve is connected to the pipeline through the connecting port and is communicated with the interior of the pipeline, when the pressure in the pipeline is higher than the pressure outside the pipeline, redundant air in the pipeline enters the interior of the safety valve, and the first diaphragm is pushed upwards to be discharged out of the safety valve from the air inlet and outlet of the safety valve, so that the pressure inside and outside the pipeline is balanced; when the pressure inside the pipeline is smaller than the pressure outside the pipeline, gas enters the safety valve from the air inlet and outlet and pushes the second diaphragm downwards through the through hole on the first diaphragm to enter the pipeline, so that the pressure inside and outside the pipeline are balanced. According to the embodiment, the positions of the first diaphragm and the second diaphragm are controlled through the pressure inside and outside the pipeline and the two springs inside the safety valve, so that the pressure inside and outside the pipeline is adjusted, the pressure inside and outside the pipeline is balanced, and the pipeline is well protected. The embodiment has simple and quick adjustment mode, is suitable for all irrigation pipelines, does not need to select air safety valves with different pressures according to different pressure requirements, saves the trouble of selection, and saves the purchasing period and the manufacturing cost.

In some embodiments, the first housing of the present utility model has a longitudinal section that increases in diameter from top to bottom; the second casing comprises connecting piece, inclined plane section and connector, connecting piece one end with first casing bottom links to each other, the other end with inclined plane section upper portion links to each other, the longitudinal section of inclined plane section reduces from top to bottom its diameter gradually, the inclined plane section bottom links to each other with the connector, the diaphragm seat is installed the inclined plane section inner wall, the disk seat is installed the connector inner wall.

In some embodiments, the first housing, the second housing, the first diaphragm, the second diaphragm, the compression spring, and the preload spring of the present utility model are coaxially disposed. In this embodiment, the components are coaxially disposed, and only one compression spring and one pre-tightening spring are required, and if the compression spring and the pre-tightening spring are not coaxially disposed, in order to ensure that the first diaphragm and the second diaphragm remain horizontal in the translation process, it is recommended that the compression spring and the pre-tightening spring are both disposed two, and the round point is used as a symmetry point.

In some embodiments, the top wall inside the first shell and the upper surface of the first diaphragm are both provided with circular rings, two ends of the compression spring are both provided with hooks, and the compression spring is arranged between the top wall of the first shell and the upper surface of the first diaphragm through the cooperation of the hooks and the circular rings. The compression spring of the embodiment is arranged in the safety valve in a mode of a hook and a circular ring, so that the compression spring is convenient to replace and install.

In some embodiments, the membrane of the present utility model is an annular structure, and the disc seat is a hollow annular structure; the membrane seat and the disc seat can also at least comprise three supporting seats which are arranged at intervals and uniformly distributed on the inner wall of the second shell.

Drawings

FIG. 1 is a schematic diagram of the structure of one embodiment of the present utility model;

FIG. 2 is a cross-sectional view taken along the direction A-A of FIG. 1;

fig. 3 is an enlarged partial schematic view of fig. 2.

In the figure: 1. a first housing; 2. a second housing; 3. disc seat 4, membrane seat 5, compression spring 5-1, hook 6, first membrane; 6-1, through holes; 7. a second membrane; 8. a pre-tightening spring; 9. a disc; 10. an air inlet and an air outlet; 11. a connection port; 12 connectors; 13. a bevel section.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

Referring to fig. 1 to 3, the pressure-adjustable air safety valve for irrigation of the present embodiment includes a first housing 1, a second housing 2, and a compression spring 5, wherein the first housing 1 is provided with an air inlet and outlet 10; the second shell 2 is in threaded connection with the first shell 1, a diaphragm seat 4 and a disc seat 3 are sequentially arranged on the inner wall of the second shell 2 from top to bottom, a first diaphragm 6 is arranged on the diaphragm seat 4, a plurality of through holes 6-1 are formed in the first diaphragm 6, the side wall of the first diaphragm 6 is in sealed contact with the inner wall of the second shell 2, a disc 9 is arranged on the disc seat 3, a gap of 10mm-15mm is reserved between the disc 9 and the inner wall of the second shell 2 so that gas flows, a pre-tightening spring 8 is arranged at the upper part of the disc 9, a second diaphragm 7 is arranged at the upper part of the pre-tightening spring 8, and the second diaphragm 7 is tightly contacted with the bottom wall of the first diaphragm 6 under the thrust of the pre-tightening spring 8 so as to seal the through holes 6-1 of the second diaphragm 7; the compression spring 5 is installed in the first casing 1 and the second casing 2, one end of the compression spring is fixed on the top wall of the first casing 1, the other end of the compression spring is fixed on the upper surface of the first diaphragm 6, and the first diaphragm 6 is tightly attached to the diaphragm seat 4 under the thrust of the compression spring 5.

In some embodiments, the longitudinal section of the first housing 1 of the present utility model increases gradually from top to bottom in diameter; the second shell 2 comprises a connecting piece 12, an inclined surface section 13 and a connecting port 11, one end of the connecting piece 12 is connected with the bottom of the first shell 1, the other end of the connecting piece is connected with the upper part of the inclined surface section 13, the longitudinal section of the inclined surface section 13 gradually reduces from top to bottom, the bottom of the inclined surface section 13 is connected with the connecting port 11, the diaphragm seat 4 is arranged on the inner wall of the inclined surface section 13, and the disk seat 3 is arranged on the inner wall of the connecting port 11. The connecting piece 12 of this embodiment is cylindrical, its upper end and first casing 1 bottom opening looks adaptation, and the lower extreme and inclined plane section 13 upper portion opening looks adaptation, and the connector 11 of this embodiment can be the threaded connection mouth, direct and pipeline threaded connection for irrigation, is convenient for dismantle and overhaul the air relief valve.

In some embodiments, the first housing 1, the second housing 2, the first diaphragm 6, the second diaphragm 7, the compression spring 5 and the pre-tension spring 8 of the present utility model are coaxially arranged. In the embodiment, the components are coaxially arranged, and only one compression spring 5 and one pre-tightening spring 8 are needed, so that the manufacturing cost and the time are saved. It is of course also possible to provide a plurality of compression springs 5 and preload springs 8, but when a plurality of compression springs 5 or preload springs 8 are provided, it is advisable to provide a dot as a symmetrical point to prevent displacement in the horizontal direction of the first diaphragm 6 and the second diaphragm 7 when they move up and down.

In some embodiments, the top wall inside the first shell 1 and the upper surface of the first membrane 6 are both provided with circular rings, both ends of the compression spring 5 are provided with hooks 5-1, and the compression spring 5 is arranged between the top wall of the first shell 1 and the upper surface of the first membrane 6 through the cooperation of the hooks 5-1 and the circular rings. The compression spring 5 of the embodiment is arranged in the safety valve in a mode of a hook 5-1 and a circular ring (shown in the figure), so that the compression spring 5 is convenient to replace and install.

In some embodiments, the diaphragm seat 4 may have an annular structure, the disc seat 3 may have a hollow annular structure, and of course, the diaphragm seat 4 and the disc seat 3 may also have three or more supporting seats disposed at intervals, and the supporting seats are uniformly distributed on the inner wall of the second housing 2.

Based on the above embodiment, the working process of the utility model is as follows:

first, the air relief valve is mounted on the irrigation pipe via connection port 11.

In the initial state, the air safety valve is in a closed state, namely, the air flow inside and outside the pipeline is not communicated.

When the water is injected into the pipeline and irrigation is started, the air safety valve starts to work, redundant air in the pipeline enters the second shell 2 from the connecting port 11 and then enters the lower part of the first diaphragm 6 from the gap between the disc 9 and the inner wall of the second shell 2, when the pressure of the air in the pipeline is higher than the thrust of the compression spring 5, the air upwards pushes the first diaphragm 6, gaps are formed between the side wall of the first diaphragm 6 and the inner wall of the second shell 2, the air enters the first shell 1 from the gaps, and then the air is discharged from the air inlet and outlet 10 to the first shell 1 so as to balance the pressure inside and outside the pipeline, protect the pipeline safety and effectively prevent the pipeline from being broken due to overlarge pressure inside the pipeline.

When the pipeline stops irrigating, the air pressure in the pipeline is smaller than the air pressure in the atmosphere, at this time, the air enters the first shell 1 from the air inlet and outlet port 10, when the air pressure entering the first shell 1 is larger than the thrust of the pre-tightening spring 8, the air pushes the second diaphragm 7 to move downwards through the through hole 6-1 on the first diaphragm 6, the through hole 6-1 is released, the air enters the lower part of the second diaphragm 7 from the through hole 6-1, then enters the connecting port 11 through the gap at the edge of the disc 9, and finally enters the pipeline through the connecting port 11, so that the pressure inside and outside the pipeline is balanced, and the safety of the pipeline is protected.

It should be noted that: the requirements of pipelines for different irrigation on valve pressure are different, at the moment, other parts of the air safety valve are kept unchanged, the valve pressure can be changed only by replacing compression springs 5 with different elasticity according to the requirements, and the pressure adjustment is realized, so that the air safety valve is convenient and quick.

The utility model has the advantages of convenient installation and pressure adjustment, easy maintenance, strong overall structure and wide application range.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (6)

1. An air safety valve for pressure-adjustable irrigation, which is characterized in that,

the first shell is provided with an air inlet and an air outlet;

the second shell is connected with the first shell, a diaphragm seat and a disc seat are sequentially arranged on the inner wall of the second shell from top to bottom, a first diaphragm is placed on the diaphragm seat, a plurality of through holes are formed in the first diaphragm, and the side wall of the first diaphragm is in sealing contact with the inner wall of the second shell; a disc is placed on the disc seat, and a set gap is formed between the disc and the inner wall of the second shell; the disc upper part is provided with a pre-tightening spring, the pre-tightening spring upper part is provided with a second diaphragm, and the second diaphragm is tightly contacted with the bottom wall of the first diaphragm under the thrust of the pre-tightening spring so as to seal the through hole of the second diaphragm;

the compression spring is arranged in the first shell and the second shell, one end of the compression spring is fixed at the top of the first shell, the other end of the compression spring is fixed on the first diaphragm, and the first diaphragm is tightly attached to the diaphragm seat under the thrust of the compression spring.

2. An air safety valve for pressure-adjustable irrigation as recited in claim 1, wherein,

the diameter of the longitudinal section of the first shell is gradually increased from top to bottom;

the second shell comprises an inclined plane section and a connecting port, the diameter of the longitudinal section of the inclined plane section gradually decreases from top to bottom, the upper part of the inclined plane section is connected with the bottom of the first shell, the lower part of the inclined plane section is connected with the connecting port, the membrane seat is mounted on the inner wall of the inclined plane section, and the disc seat is mounted on the inner wall of the connecting port.

3. A pressure-adjustable irrigation air safety valve according to claim 1 or 2, wherein the first housing, the second housing, the first diaphragm, the second diaphragm, the compression spring and the pre-tension spring are coaxially arranged.

4. The air safety valve for pressure-adjustable irrigation according to claim 3, wherein the top wall inside the first housing and the upper surface of the first diaphragm are provided with circular rings, hooks are arranged at two ends of the compression spring, and the compression spring is installed between the top wall of the first housing and the upper surface of the first diaphragm through the cooperation of the hooks and the circular rings.

5. The pressure-adjustable irrigation air safety valve according to claim 4, wherein the diaphragm is of annular configuration and the disc seat is of hollow annular configuration.

6. The pressure-adjustable air safety valve for irrigation as recited in claim 4, wherein the membrane seat and the disc seat comprise at least three supporting seats arranged at intervals, and the supporting seats are uniformly distributed on the inner wall of the second housing.