CN116557599A

CN116557599A - Flow regulating valve

Info

Publication number: CN116557599A
Application number: CN202310461896.2A
Authority: CN
Inventors: 崔春亮; 张江辉; 巴银蒙克; 盛祥民; 陈志卿; 闫屹成; 雷建花; 赛衣旦; 杨洪江; 蒲升阳; 王卓; 原常聪
Original assignee: Xinjiang Institute of Water Resources and Hydropower Research
Current assignee: Xinjiang Institute of Water Resources and Hydropower Research
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-08-08

Abstract

The invention relates to the technical field of agricultural irrigation water treatment, in particular to a flow regulating valve, which comprises a valve seat, a valve shell, a valve core and an elastic diaphragm, wherein a left-right through overflow hole is formed in the valve seat, a cylindrical valve core is connected to the left side of the valve seat corresponding to the overflow hole in a sealing manner, a plurality of openings are formed in the valve core wall at intervals along the circumferential direction, the elastic diaphragm is wrapped on the outer side of the valve core corresponding to the plurality of opening positions in a sealing manner, a water passing inner cavity which is communicated left-right and is communicated with the overflow hole in a sealing manner is enclosed between the elastic diaphragm and the valve core, the valve shell is sleeved on the outer side of the valve core, the left end of the valve shell is connected with the valve seat in a sealing manner, and an adjusting outer cavity with a left end closed and a right end opened is enclosed between the valve shell, the valve seat and the elastic diaphragm. The invention has reasonable structure, the water cross-section area of the water passing cavity can be adjusted along with the change of the water head, thereby ensuring the relative stability of the overcurrent flow, and the whole device is controlled by hydraulic self-driving, has no labor cost or electric energy consumption during operation and has low operation cost.

Description

Flow regulating valve

Technical Field

The invention relates to the technical field of agricultural irrigation water treatment, in particular to a flow regulating valve.

Background

The drip irrigation is one of advanced technologies of relatively high-efficiency water consumption and accurate irrigation in agricultural water-saving engineering, the system structure mainly comprises a main pipe, a branch pipe, a drip irrigation belt, various valves and the like, and in the irrigation process, in order to ensure that the drip irrigation belt has relatively stable flow in a certain range, the flow change caused by water head fluctuation in a pipeline is eliminated through a flow regulating valve, and the flow regulating valve is basically controlled manually or electrically at present, so that the operation cost is high.

The Chinese patent publication No. CN104864143B discloses a multifunctional large-flow pressure reducing valve for irrigation, which comprises a valve body, a supporting plate, a valve rod, a valve core, a valve cover, a base and an on-off valve; the valve body is straight-through cylinder type structure, and wherein one end is the water inlet end, and the other end is the water outlet end, valve body middle part upper and lower side respectively is equipped with an opening, below opening part pipe wall outwards extends a section distance, forms a bottom even ring shape opening, be provided with the screw thread on the ring shape open-ended inner wall, above opening part pipe wall outwards extends a section distance, forms a top even ring shape opening, above open-ended extension internal diameter has two increases, forms first step and second step, and the top opening contains the three sections that the internal diameter is different along the axial, above open-ended extension's tip forms a square board along outer wall radial direction extension, square board four corners are close to edge department and are equipped with a drilling respectively. The pressure reducing valve needs to be controlled manually, so that the labor cost is high during operation.

Disclosure of Invention

The invention provides a flow regulating valve, which overcomes the defects of the prior art and can effectively solve the problem of high operation cost of the flow regulating valve in the prior irrigation system.

The technical scheme of the invention is realized by the following measures: the utility model provides a flow control valve, includes disk seat, valve casing, case and elastic diaphragm, is equipped with on the disk seat and passes the discharge orifice that link up about, and the disk seat left side sealing connection that corresponds the discharge orifice position has the cylinder case, is equipped with a plurality of opening along circumference interval on the case wall, corresponds the case outside sealing package of a plurality of opening position has the elastic diaphragm, encloses into between elastic diaphragm and the case and link up about and with the water inner chamber that crosses the discharge orifice sealing connection, valve casing suit is in the case outside and valve casing left end and disk seat sealing connection, encloses into between valve casing, valve seat, case and the elastic diaphragm that the left end is sealed, right-hand member open-ended adjusts the outer chamber.

The following are further optimizations and/or improvements to the above described inventive arrangements:

the right side of the valve seat corresponding to the overflow hole is communicated with a first water passing pipeline in a sealing way, a bypass pipeline with one end communicated with the adjusting outer cavity is arranged on the valve housing, the other end of the bypass pipeline is fixedly communicated with the first water passing pipeline, and a control valve is arranged on the bypass pipeline.

The control valve may be a manual ball valve.

The inner side wall of the valve core corresponding to the position between every two adjacent openings can be fixedly connected with a radial partition plate, the middle part of the valve core is penetrated with a mandrel, the inner end of the radial partition plate is fixedly connected with the mandrel, and the radial partition plate and the mandrel divide the water passing inner cavity into a plurality of mutually independent water passing channels.

The outer side wall of the valve core can be provided with an outer ring groove, the elastic diaphragm is positioned in the outer ring groove, and the thickness of the elastic diaphragm is equal to or smaller than the depth of the outer ring groove.

The valve seat can be of a flange structure, the overflow hole is a central hole of the flange, and the left end of the valve core is fixedly arranged in the central hole of the flange.

The valve housing may include a connection flange and a second water passing pipe, the connection flange being in sealing connection with the valve seat, the second water passing pipe being in sealing connection with the connection flange.

The invention has reasonable structure and ingenious design, the water cross-section area of the water passing cavity can be adjusted along with the change of the water head, so that the relative stability of the overcurrent flow is ensured, the whole device is controlled by hydraulic self-driving, no labor cost or electric energy consumption is generated during operation, and the operation cost is low.

Drawings

Fig. 1 is a schematic diagram of a front view structure according to a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1.

Fig. 3 is a perspective view of a first embodiment of the present invention.

Fig. 4 is a perspective view of a valve seat, valve element and elastic diaphragm in accordance with a first embodiment of the present invention.

Fig. 5 is a perspective view of a valve element and an elastic diaphragm in accordance with a first embodiment of the present invention.

Fig. 6 is a perspective view of a valve core according to a first embodiment of the present invention.

Fig. 7 is a schematic right-view structure of a valve core according to a first embodiment of the present invention.

Fig. 8 is a schematic cross-sectional view of an embodiment of the present invention when the elastic diaphragm is deformed by being pressed inward.

Fig. 9 is a schematic view of a partial cross-sectional structure of a second embodiment of the present invention.

Fig. 10 is a graph of the flow rate of the excess flow in response to the change in the head of the second embodiment of the present invention.

The codes in the drawings are respectively: 1 is a valve seat, 2 is a valve core, 3 is an elastic diaphragm, 4 is an overflow hole, 5 is an opening, 6 is a water passing inner cavity, 7 is an adjusting outer cavity, 8 is a radial partition plate, 9 is a mandrel, 10 is an outer ring groove, 11 is a first water passing pipeline, 12 is a bypass pipeline, 13 is a control valve, 14 is a connecting flange, and 15 is a second water passing pipeline.

Detailed Description

The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.

In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention is further described below with reference to examples and figures:

embodiment one: as shown in fig. 1-8, the flow regulating valve comprises a valve seat 1, a valve shell, a valve core 2 and an elastic diaphragm 3, wherein a left-right through flow hole 4 is formed in the valve seat 1, a cylindrical valve core 2 is connected to the left side of the valve seat 1 corresponding to the position of the flow hole 4 in a sealing manner, a plurality of openings 5 are formed in the wall of the valve core 2 at intervals along the circumferential direction, the elastic diaphragm 3 is wrapped on the outer side of the valve core 2 corresponding to the positions of the plurality of openings 5 in a sealing manner, a water passing inner cavity 6 which is communicated with the flow hole 4 in a sealing manner is formed between the elastic diaphragm 3 and the valve core 2 in a surrounding manner, the valve shell is sleeved on the outer side of the valve core 2, the left end of the valve shell is connected with the valve seat 1 in a sealing manner, and an adjusting outer cavity 7 with the left end being closed and the right end being opened 5 is formed between the valve shell, the valve seat 1, the valve core 2 and the elastic diaphragm 3.

According to the requirement, 4 openings 5 are uniformly formed in the wall of the valve core 2 along the circumferential interval, when the valve core is used, the flow regulating valve is installed in a pipeline of an irrigation system, fluid flows through the flow regulating valve from right to left through the water passing inner cavity 6, when the fluid flow in the pipeline is lower than a certain value, the elastic diaphragm 3 cannot deform, namely the water passing cross-section area of the water passing inner cavity 6 is unchanged, when the flow in the pipeline is large, the water volume V1 in the outer cavity 7 is regulated to increase, the water pressure in the outer cavity 7 is regulated to increase, the water in the outer cavity 7 generates an acting force F1 on the elastic diaphragm 3 to the valve core 2, the elastic diaphragm 3 corresponding to the opening 5 is extruded inwards to deform, the water passing cross-section area A2 of the water passing inner cavity 6 is reduced, and particularly when the flow regulating valve is in a certain working water head range, the acting force F1 of the water passing inner cavity 3 to the elastic diaphragm 3 is generated to the valve core 2 is increased by the water passing cross-section area A2 of the water passing inner cavity 6 is reduced by the water passing inner cavity 3 when the flow is increased; when the flow is reduced, the water body in the outer cavity 7 is regulated to generate acting force F1 to the valve core 2, the deformation of the elastic diaphragm 3 is reduced, so that the water passing cross-section area A2 of the water passing inner cavity 6 is increased, namely, the elastic diaphragm 3 continuously and automatically regulates the water passing cross-section area A2 of the water passing inner cavity 6 along with the change of the acting force F1, so that the device is relatively stable (small in fluctuation) in the flow passing value Q within a certain water head range, the relatively stable flow of the water outlet of the drip irrigation belt within a certain range is ensured, the waste of water resources is avoided, and compared with the existing manual control or electrically driven flow regulating valve, the self-driven flow regulating valve has no labor cost or electric energy consumption during operation and is low in operation cost.

The first embodiment can be further optimized and/or improved according to practical needs:

as shown in fig. 4-7, a radial partition plate 8 is fixedly connected to the inner side wall of the valve core 2 corresponding to the position between every two adjacent openings 5, a mandrel 9 is arranged in the middle of the valve core 2 in a penetrating manner, the inner end of the radial partition plate 8 is fixedly connected with the mandrel 9, and the radial partition plate 8 and the mandrel 9 divide the water passing inner cavity 6 into a plurality of mutually independent water passing channels. Each radial partition plate 8 is arranged along the radial direction of the valve core 2, in this embodiment, the number of openings 5 is 4, the number of radial partition plates 8 is 4, the whole water passing inner cavity 6 is divided into 4 water passing channels independent of each other by the 4 radial partition plates 8 and the mandrel 9, and specifically, the valve core 2, the radial partition plates 8 and the mandrel 9 are integrally arranged.

As shown in fig. 6, an outer ring groove 10 is arranged on the outer side wall of the valve core 2, the elastic diaphragm 3 is positioned in the outer ring groove 10, and the thickness of the elastic diaphragm 3 is equal to or smaller than the depth of the outer ring groove 10. The elastic diaphragm 3 is all positioned in the outer ring groove 10, and the two ends of the elastic diaphragm 3 cannot be loosened or offset due to the impact of water.

As shown in fig. 1-4, the valve seat 1 is in a flange structure, the overflow hole 4 is a central hole of the flange, and the left end of the valve core 2 is fixedly arranged in the central hole of the flange. Specifically, the outer side of the left part of the valve core 2 is in threaded connection with the inner wall of a central hole of the flange, and the valve seat 1 is of a flange structure, so that the valve seat is convenient to connect with structures such as a valve shell, a water outlet pipeline and the like.

As shown in fig. 1-3, the valve housing comprises a connecting flange 14 and a second water passing pipe 15, the connecting flange 14 is in sealing connection with the valve seat 1, and the second water passing pipe 15 is in sealing connection with the connecting flange 14. The connection flange 14 is conveniently connected with the valve seat 1, and specifically, the inner wall of the central hole of the connection flange 14 and the outer side of the left part of the second water passing pipeline 15 are connected together through threads.

Embodiment two: the point of difference between the present embodiment and the first embodiment is that: as shown in fig. 9, the right side of the valve seat 1 corresponding to the position of the overflow hole 4 is hermetically communicated with a first water passing pipeline 11, a bypass pipeline 12 with one end communicated with the adjusting outer cavity 7 is arranged on the valve housing, the other end of the bypass pipeline 12 is fixedly communicated with the first water passing pipeline 11, and a control valve 13 is arranged on the bypass pipeline 12. In comparison with the first embodiment, since the bypass pipe 12 is provided in the present embodiment, the water body in the outer cavity 7 is adjusted to flow into the first water passing pipe 11 through the bypass pipe 12, so that when the control valve 13 is at different opening and closing degrees under the condition of unchanged working water head, the flow value Q of the water passing inner cavity 6 is also different, as shown in fig. 10, when the control valve represented by the curve No. 1 in the figure is completely closed, the relation curve between the flow value Q and the working water head is obtained; in the graph, when the control valve is in a half-open state, represented by a curve No. 2, the relation curve between the overcurrent flow value Q and the working water head is shown; in the full-open state of the control valve represented by a curve 3 in the graph, the relation curve of the overcurrent flow value Q and the working water head; namely, through the arrangement of the bypass pipeline 12 and the control valve 13, the embodiment can still ensure that the overcurrent flow value Q is relatively stable when the water head fluctuates in a larger range, conversely, when the working water head is unchanged, the embodiment can adjust the overcurrent flow value Q by adjusting the opening and closing degree of the control valve 13, thereby meeting the use requirements under different conditions, and the embodiment has good use flexibility and strong applicability. Specifically, the control valve 13 is a manual ball valve in this embodiment.

The technical characteristics form the optimal embodiment of the invention, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.

Claims

1. The utility model provides a flow control valve, its characterized in that includes disk seat, valve casing, case and elastic diaphragm, is equipped with the flow hole that link up about on the disk seat, and the disk seat left side sealing connection that corresponds the flow hole position has the cylinder case, is equipped with a plurality of opening along circumference interval on the case wall, and the case outside sealing package that corresponds a plurality of opening positions has the elastic diaphragm, encloses into between elastic diaphragm and the case and link up about and with the flow hole sealing connection's water inner chamber, valve casing suit is in the case outside and valve casing left end and disk seat sealing connection, encloses into between valve casing, disk seat, case and the elastic diaphragm that the left end is sealed, right-hand member open-ended adjusts the outer chamber.

2. The flow regulating valve as claimed in claim 1, wherein the valve seat right side corresponding to the position of the overflow hole is hermetically connected with a first water passing pipe, a bypass pipe with one end communicated with the regulating outer cavity is arranged on the valve housing, the other end of the bypass pipe is fixedly connected with the first water passing pipe, and a control valve is arranged on the bypass pipe.

3. The flow regulating valve of claim 2, wherein the control valve is a manual ball valve.

4. The flow regulating valve as claimed in claim 1, 2 or 3, wherein a radial partition plate is fixedly connected to the inner side wall of the valve core corresponding to the position between every two adjacent openings, a mandrel is arranged in the middle of the valve core in a penetrating manner, the inner ends of the radial partition plates are fixedly connected with the mandrel, and the radial partition plates and the mandrel divide the water passing inner cavity into a plurality of mutually independent water passing channels.

5. The flow regulating valve as claimed in claim 1, 2 or 3, wherein the valve core has an outer circumferential groove formed in an outer sidewall thereof, and an elastic diaphragm is disposed in the outer circumferential groove, and the thickness of the elastic diaphragm is equal to or less than the depth of the outer circumferential groove.

6. The flow regulating valve as claimed in claim 4, wherein the valve core has an outer circumferential groove formed in an outer sidewall thereof, the elastic diaphragm is disposed in the outer circumferential groove, and the thickness of the elastic diaphragm is equal to or less than the depth of the outer circumferential groove.

7. The flow regulating valve as claimed in claim 1, 2, 3 or 6, wherein the valve seat is a flange structure, the overflow hole is a central hole of the flange, and the left end of the valve core is fixedly installed in the central hole of the flange.

8. The flow regulating valve of claim 7, wherein the valve housing includes a connecting flange and a second water conduit, the connecting flange being sealingly connected to the valve seat, the second water conduit being sealingly connected to the connecting flange.