CN221300119U - Water conservancy control valve resistant to water pressure fluctuation interference - Google Patents

Abstract

The utility model discloses a water conservancy control valve resistant to water pressure fluctuation interference, which comprises a pipe body, a main valve body, an upper cover, a motor valve, a valve core, an elastic rubber ring and a first spring, wherein the main valve body is provided with the upper cover; the water inlet of the motor valve is communicated with the water outlet joint of the water inlet cavity through a water inlet connecting pipe, and the water return port of the motor valve is communicated with the water outlet joint of the upper cover through a communicating pipe; the method is characterized in that: the water conservancy control cavity is communicated with the one-way air inlet valve. The utility model is arranged on a water supply pipeline for use, is not influenced by the fluctuation of the water pressure in the pipeline, is not easy to damage, and prolongs the service life.

Description

Water conservancy control valve resistant to water pressure fluctuation interference

Technical Field

The utility model relates to an improvement of a water conservancy control valve, in particular to a water conservancy control valve resistant to water pressure fluctuation interference, which is mainly applicable to water supply pipelines of farmland irrigation.

Background

The water conservancy control valve comprises a pipe body, a main valve body, a valve core, an elastic rubber ring, an upper cover, a spring and a motor valve, wherein the two ends of the pipe body are respectively fixedly provided with a water inlet joint and a water outlet joint; the motor valve is shown in fig. 8 and 9, and comprises a three-cavity valve body 71, a partition plate 70, a motor driving device 72, a water outlet 74, a water inlet 75, a water return port 76, an elastic sealing rubber pad 77, a first upper sealing pipe 78 and a second upper sealing pipe 79, wherein the motor driving device 72 is fixedly arranged at the upper end of the three-cavity valve body 71, the motor driving device 72 is connected with a power supply, a valve opening pressing block 721 and a valve closing pressing block 722 which are respectively telescopic are arranged at the bottom of the motor driving device 72, and the motor driving device 72 drives the valve opening pressing block 721 and the valve closing pressing block 722 to respectively perform telescopic actions; the inner cavity of the three-cavity valve body 71 is divided into a first water cavity 711, a second water cavity 712 and a third water cavity 713 through a partition plate 70, an elastic sealing rubber pad 77 is arranged at the upper end of the inner cavity of the three-cavity valve body 71, the periphery of the elastic sealing rubber pad 77 is fixed between the three-cavity valve body 71 and a motor driving device 72 along a sealing way, the first water cavity 711 is communicated with a water inlet 75, the second water cavity 712 is communicated with a water outlet 74, the third water cavity 713 is communicated with a water return port 76, and the third water cavity 713 is positioned between the first water cavity 711 and the second water cavity 712; the upper part of the first water cavity 711 is fixedly provided with a first upper sealing pipe 78, the upper part of the second water cavity 712 is fixedly provided with a second upper sealing pipe 79, the position of the valve opening pressing block 721 is matched with the first upper sealing pipe 78, and the position of the valve closing pressing block 722 is matched with the second upper sealing pipe 79; a gap is arranged between the upper end of the baffle 70 and the elastic sealing rubber pad 77; the water inlet 75 is communicated with the water outlet joint of the water inlet cavity through a water inlet connecting pipe, and the water return port 76 is communicated with the water outlet joint of the upper cover through a communicating pipe.

When the irrigation water pump is used, the irrigation water pump is started, pressurized water enters the water inlet joint end of the pipe body and enters the first water cavity 711 through the water inlet cavity water outlet joint, the water inlet connecting pipe and the water inlet; when the water conservancy control valve is opened, the valve opening pressing block 721 is driven by the motor driving device 72 to press down the outlet of the first upper sealing pipe 78, the valve closing pressing block 722 is in a jacking state under the self elastic action of the elastic sealing rubber cushion 77, the third water cavity 713 is communicated with the second water cavity 712 through a gap between the elastic sealing rubber cushion 77 and the upper end of the partition plate 70, water between the upper cover and the valve core enters the third water cavity 713 through the upper cover water outlet connector, the communicating pipe and the water return port, finally is discharged from the water outlet 74, the pressure in the upper cover cavity is reduced and balanced with external air pressure, pressurized water in the water inlet connector of the pipe body props against the valve core compression spring, the valve core moves upwards, so that a water inlet hole at the bottom of the main valve body is opened, the pressurized water enters the cavity of the main valve body below the elastic rubber ring from the water inlet hole, enters the water outlet connector cavity of the pipe body from the water outlet hole on the side wall of the main valve body, and then enters the rear pipeline. When the water conservancy control valve is closed, the motor driving device 72 drives the valve closing pressing block 722 to press down the elastic sealing rubber cushion 77 to seal the outlet of the second upper sealing pipe 79, the valve opening pressing block 721 is lifted under the self elastic action of the elastic sealing rubber cushion 77, at the moment, the first water cavity 711 is communicated with the third water cavity 713 through a gap between the upper end of the partition plate 70 and the elastic sealing rubber cushion 77, pressurized water in the water inlet joint end of the pipe body enters the first water cavity 711 through the water inlet cavity water outlet joint, the water inlet connecting pipe and the water inlet, and then the first upper sealing pipe 78, the third water cavity 713, the water return port 76, the communicating pipe and the upper cover water outlet joint enter the upper cover cavity, and the bottom of the valve core is pressed and sealed at the water inlet hole of the main valve body under the action of water pressure in the upper cover cavity, so that the water conservancy control valve is closed. The motor valve-driven water conservancy control valve has the following defects: in normal farmland irrigation, if the working mode of closing the water conservancy control valve firstly and then closing the water pump is adopted, the high water pressure between the water conservancy control valve and the water pump can cause harm to a water supply pipeline, and pipe explosion accidents are easy to occur. If the working mode of closing the water pump firstly is adopted, or power failure occurs, the water pump is stopped suddenly, the water pressure in the water supply pipeline is reduced suddenly, the cavity between the upper cover and the valve core is lost in the moment, the cavity of the upper cover is communicated with the third water cavity 713 through the communicating pipe, so negative pressure is formed in the third water cavity 713, moreover, the apertures of the second upper sealing pipe 79 and the first upper sealing pipe 78 are smaller, the negative pressure formed in the third water cavity 713 can enable the elastic sealing rubber cushion 77 to be pressed down quickly, the second upper sealing pipe 79 is blocked automatically, so that the cavity among the third water cavity 713, the upper cover, the valve core and the elastic rubber ring forms an independent negative pressure cavity, the water conservancy control valve cannot be opened again, the water conservancy control valve cannot work normally, the water conservancy control valve can be restored to the water supply operation again only after the replacement and maintenance of the water conservancy control valve is needed, the time and labor are wasted, and the cost of farm irrigation operation is increased.

Disclosure of Invention

The utility model aims to provide a water conservancy control valve which is arranged on a water supply pipeline and is not influenced by the fluctuation of the water pressure in the pipeline, not easy to damage and capable of prolonging the service life.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The water conservancy control valve resistant to water pressure fluctuation interference comprises a pipe body, a main valve body, an upper cover, a motor valve, a valve core, an elastic rubber ring and a first spring, wherein two ends of the pipe body are respectively fixedly provided with a water inlet joint and a water outlet joint; the water inlet of the motor valve is communicated with the water outlet joint of the water inlet cavity through a water inlet connecting pipe, and the water return port of the motor valve is communicated with the water outlet joint of the upper cover through a communicating pipe; the method is characterized in that: the water conservancy control cavity is communicated with the one-way air inlet valve.

The motor valve comprises a three-cavity valve body, a partition plate, a motor driving device, a water outlet, a water inlet, a water return port, an elastic sealing rubber pad, a first upper sealing pipe and a second upper sealing pipe, wherein the motor driving device is fixedly arranged at the upper end of the three-cavity valve body, the motor driving device is connected with a power supply, and a valve opening pressing block and a valve closing pressing block which are respectively telescopic are arranged at the bottom of the motor driving device; the inner cavity of the three-cavity valve body is divided into a first water cavity, a second water cavity and a third water cavity through a partition plate, an elastic sealing rubber cushion is arranged at the upper end of the inner cavity of the three-cavity valve body, the periphery of the elastic sealing rubber cushion is fixed between the three-cavity valve body and the motor driving device along a sealing way, the first water cavity is communicated with the water inlet, the second water cavity is communicated with the water outlet, the third water cavity is communicated with the water return port, and the third water cavity is positioned between the first water cavity and the second water cavity; the upper part of the first water cavity is fixedly provided with a first upper sealing pipe, the upper part of the second water cavity is fixedly provided with a second upper sealing pipe, the position of the valve opening pressing block is matched with the first upper sealing pipe, and the position of the valve closing pressing block is matched with the second upper sealing pipe; a gap is arranged between the upper end of the baffle plate and the elastic sealing rubber cushion.

The periphery of the water inlet hole at the bottom of the main valve body is fixedly provided with an inner convex edge, and the upper port part of the main valve body is provided with a valve body sealing ring groove; the elastic rubber ring consists of an arc ring body, a valve body sealing ring and an upper cover sealing ring, wherein a through hole is formed in the middle of the arc ring body, the valve body sealing ring is fixedly arranged at the lower part of the outer edge of the arc ring body, the upper cover sealing ring is fixedly arranged at the upper part of the outer edge of the arc ring body, and the valve body sealing ring is embedded into a valve body sealing ring groove at the upper end of the main valve body; an upper cover sealing ring groove is arranged at the lower port of the upper cover, and an upper cover sealing ring of the elastic rubber ring is embedded into the upper cover sealing ring groove; a filter pipe is arranged in the cavity of the water inlet joint of the pipe body, and one end of the filter pipe is communicated with the water outlet joint of the water inlet cavity;

The valve core consists of a valve core body and a rubber ring pressing block, wherein the central section shape of the rubber ring pressing block is Y-shaped, the rubber ring pressing block is fixedly arranged in a mounting cavity at the upper part of the valve core body through threaded connection at the lower end, a central groove is formed at the upper part of the rubber ring pressing block, and the lower end of a first spring is arranged in the central groove; the valve core is characterized in that an inner concave ring groove is formed in the side wall of the lower portion of the valve core body, lower centralizing blocks uniformly distributed along the circumference are fixedly arranged on the side wall of the valve core body below the inner concave ring groove, upper centralizing blocks uniformly distributed along the circumference are fixedly arranged on the side wall of the valve core body above the inner concave ring groove, the lower end of an arc-shaped ring body of the elastic rubber ring is fixedly arranged between the upper end of the valve core body and the everting edge of the rubber ring pressing block in a sealing mode, the bottom of the valve core body is fixedly provided with an arc-shaped surface bulge matched with a water inlet hole of the main valve body, and the periphery of the arc-shaped surface bulge is fixedly provided with a valve core sealing ring matched with the inner convex edge of the periphery of the water inlet hole.

The middle part of the top plate in the cavity of the upper cover is fixedly provided with a positioning ring, and the upper end of the first spring is sleeved on the positioning ring.

The top plate of the upper cover is fixedly provided with an upper cover water outlet, the upper cover water outlet connector is fixedly connected with the upper cover water outlet cavity in a threaded manner, and the inner cavity of the upper cover water outlet is communicated with the inner cavity of the upper cover through a first through hole in the top plate of the upper cover.

The one-way air inlet valve is fixedly arranged on the upper cover and is communicated with the water conservancy control cavity through a second through hole on the upper cover; the one-way air inlet valve comprises a vertical pipe, a second spring, a valve ball, an outer cover and a one-way valve sealing pad, wherein the lower end of the vertical pipe is fixedly arranged on a top plate of the upper cover, the outer wall of the vertical pipe is fixedly provided with the outer cover through threaded connection, the middle part of the outer cover is provided with a third through hole, the inner cover cavity is provided with a center hole matched with the third through hole, the inner cavity of the vertical pipe is communicated with the inner cavity of the upper cover through the second through hole on the top plate of the upper cover, the second spring is arranged in the inner cavity of the vertical pipe, the valve ball is arranged between the upper end of the second spring and the one-way valve sealing pad, and the valve ball is matched with the center hole of the one-way valve sealing pad.

The inner wall of the cavity of the vertical pipe is uniformly and fixedly provided with 3-4 limiting plates, an air flow passage is formed between two adjacent limiting plates, and the second spring and the valve ball are positioned in the space surrounded by all the limiting plates.

The central axes of the water inlet hole at the bottom of the main valve body, the valve core, the elastic rubber ring, the first spring and the positioning ring of the upper cover are overlapped.

The bottom of the pipe body is fixedly provided with a base, and the pipe body, the water inlet joint, the water outlet joint and the main valve body are formed into a whole through injection molding.

As an improvement of the one-way air inlet valve, the one-way air inlet valve is fixedly arranged on the communicating pipe through a three-way joint; the one-way air inlet valve comprises a vertical pipe, an outer cover, a one-way valve sealing gasket and an elastic rubber sealing nozzle, wherein the lower end of the vertical pipe is fixedly connected with the upper opening of the three-way joint, the other two interfaces of the three-way joint are respectively connected with the communicating pipe, the upper end of the vertical pipe is fixedly connected with the outer cover, the middle part of the outer cover is provided with a third through hole, the inner wall of the outer cover is fixedly provided with the elastic rubber sealing nozzle, the inner cavity of the elastic rubber sealing nozzle is communicated with the third through hole, and the one-way valve sealing gasket is arranged between the vertical pipe and the top plate of the outer cover.

As another improvement of a one-way air inlet valve, the one-way air inlet valve is composed of a vertical pipe, a second spring, a sliding cover, a supporting plate, a sliding seat and a sealing ring, wherein the lower end of the vertical pipe is in threaded connection with the upper opening of a three-way joint, an inclined plane is arranged at the edge of the inner opening of the lower end of the vertical pipe, the second spring, the sliding cover, the supporting plate and the sliding seat are arranged in the cavity of the vertical pipe, the sliding cover and the sliding seat are fixedly connected through 3-4 supporting plates which are uniformly distributed, the two ends of the second spring are positioned between an inner boss of the vertical pipe and the sliding cover, the second spring is sleeved on the upper parts of all the supporting plates, a third through hole is formed in the middle part of the sliding cover, an air inlet cavity communicated with the third through hole is formed in the middle part of the upper end of all the supporting plates, an air inlet channel communicated with the air inlet cavity is formed between two adjacent supporting plates, a fixing groove is formed in the periphery of the sliding seat, and the sealing ring matched with the inclined plane of the inner edge of the lower end of the vertical pipe in a sealing mode is embedded in the fixing groove.

The utility model has the beneficial effects that: the water-saving irrigation device is arranged on a water supply pipeline, is not influenced by the fluctuation of the water pressure in the pipeline, is not easy to damage, prolongs the service life, and is suitable for farmland water-saving irrigation.

Drawings

FIG. 1 is a schematic diagram of a front view of the structure of the present utility model;

FIG. 2 is a schematic view in partial cross-section of the structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of the tube and main valve body of the present utility model;

FIG. 4 is an enlarged schematic view of the valve core and elastomeric ring of the present utility model in front view;

FIG. 5 is an enlarged schematic view of the present utility model in cross-section taken along the direction A-A in FIG. 4;

FIG. 6 is an enlarged schematic view of the structure of the upper cover of the present utility model;

FIG. 7 is an enlarged schematic view of a cross-sectional structure of the upper cover of the present utility model;

FIG. 8 is an enlarged schematic view of the motor valve of the present utility model from the front;

FIG. 9 is an enlarged schematic view of the structure of the present utility model taken along the direction B-B in FIG. 8;

FIG. 10 is an enlarged schematic sectional view of a unidirectional intake valve of a second construction in accordance with the present utility model;

FIG. 11 is an enlarged schematic sectional view of a third construction of a one-way intake valve according to the present utility model;

FIG. 12 is an enlarged schematic front view of a third embodiment of a sliding cover, a support plate and a slider of a one-way intake valve according to the present utility model;

FIG. 13 is a schematic cross-sectional view of the structure of the present utility model taken along the direction C-C in FIG. 12.

In the figure: 1. a tube body; 2. a base; 3. a water inlet joint; 4. a water outlet joint; 5. a main valve body; 51. a valve body sealing ring groove; 52. a water inlet hole; 53. a water outlet hole; 54. an inner convex edge; 6. an upper cover; 61. a positioning ring; 62. a water outlet of the upper cover; 63. an upper cover sealing ring groove; 64. a first through hole; 65. a second through hole; 7. a motor valve; 70. a partition plate; 71. a three-chamber valve body; 711. a first water cavity; 712. a second water cavity; 713. a third water cavity; 72. a motor driving device; 721. opening a valve pressing block; 722. closing a valve pressing block; 73. a fixing plate; 74. a water outlet; 75. a water inlet; 76. a water return port; 77. elastic sealing rubber cushion; 78. a first upper sealing tube; 79. a second upper sealing tube; 8. a one-way air inlet valve; 81. a riser; 82. a limiting plate; 83. a second spring; 84. a valve ball; 85. an outer cover; 86. a check valve gasket; 87. a third through hole; 88. an elastic rubber sealing nozzle; 891. a sliding cover; 892. a support plate; 893. a slide; 894. a seal ring; 895. an air inlet cavity; 896. a fixing groove; 9. a valve core; 91. a valve core body; 92. an inner concave ring groove; 93. the arc surface is convex; 94. a centering block is arranged on the upper part; 95. a lower righting block; 96. a valve core sealing ring; 97. a central groove; 98. a rubber ring pressing block; 10. a water inlet cavity water outlet joint; 11. a water outlet joint is covered on the upper cover; 12. an elastic rubber ring; 121. an arc ring body; 122. a valve body seal ring; 123. an upper cover sealing ring; 13. a first spring; 14. a water inlet connecting pipe; 15. a communicating pipe; 16. a filter tube; 17. a three-way joint; 18. and a water conservancy control cavity.

Detailed Description

The present utility model is manufactured with reference to fig. 1, 2, 3, 4, 5, 6, 7, 8, and 9.

The water conservancy control valve resistant to water pressure fluctuation interference comprises a pipe body 1, a main valve body 5, an upper cover 6, a motor valve 7, a valve core 9, an elastic rubber ring 12 and a first spring 13, wherein two ends of the pipe body 1 are respectively fixedly provided with a water inlet joint 3 and a water outlet joint 4, the main valve body 5 is fixedly arranged in the middle of the pipe body 1, the bottom of the main valve body 5 is provided with a water inlet hole 52 communicated with the inner cavity of the water inlet joint 3, the side wall of the main valve body 5 is provided with a water outlet hole 53 communicated with the inner cavity of the water outlet joint 4, the upper end of the main valve body 5 is fixedly provided with an upper cover 6, the cavity of the main valve body 5 is internally provided with a valve core 9, the lower end of the valve core 9 is in sealing fit with the water inlet hole 52 at the bottom of the main valve body 5, the upper end of the valve core 9 is in sealing and fixed connection with the lower end of the elastic rubber ring 12, the upper end of the elastic rubber ring 12 is in sealing and fixed between the main valve body 5 and the upper cover 6, so that the inner cavity of the main valve body 5 is divided into an upper part and a lower part independent from each other by the elastic rubber ring 12, the upper side of the upper part is provided with a water inlet hole 53 communicated with the inner cavity 6, the upper cover 10 is arranged between the upper cover 6 and the upper cover 6 is fixedly connected with the upper cover 6, and the upper cover of the upper cover is provided with the upper cover 6; the water inlet 75 of the motor valve 7 is communicated with the water inlet cavity water outlet joint 10 through a water inlet connecting pipe 14, and the water return port 76 of the motor valve 7 is communicated with the upper cover water outlet joint 11 through a communicating pipe 15; the method is characterized in that: the water conservancy control chamber 18 is communicated with the one-way air inlet valve 8.

The motor valve 7 comprises a three-cavity valve body 71, a partition plate 70, a motor driving device 72, a water outlet 74, a water inlet 75, a water return port 76, an elastic sealing rubber pad 77, a first upper sealing pipe 78 and a second upper sealing pipe 79, wherein the motor driving device 72 is fixedly arranged at the upper end of the three-cavity valve body 71, the motor driving device 72 is connected with a power supply, a valve opening pressing block 721 and a valve closing pressing block 722 which are respectively telescopic are arranged at the bottom of the motor driving device 72, and the motor driving device 72 drives the valve opening pressing block 721 and the valve closing pressing block 722 to respectively perform telescopic actions; the inner cavity of the three-cavity valve body 71 is divided into a first water cavity 711, a second water cavity 712 and a third water cavity 713 through a partition plate 70, an elastic sealing rubber pad 77 is arranged at the upper end of the inner cavity of the three-cavity valve body 71, the periphery of the elastic sealing rubber pad 77 is fixed between the three-cavity valve body 71 and a motor driving device 72 along a sealing way, the first water cavity 711 is communicated with a water inlet 75, the second water cavity 712 is communicated with a water outlet 74, the third water cavity 713 is communicated with a water return port 76, and the third water cavity 713 is positioned between the first water cavity 711 and the second water cavity 712; the upper part of the first water cavity 711 is fixedly provided with a first upper sealing pipe 78, the upper part of the second water cavity 712 is fixedly provided with a second upper sealing pipe 79, the position of the valve opening pressing block 721 is matched with the first upper sealing pipe 78, and the position of the valve closing pressing block 722 is matched with the second upper sealing pipe 79; a gap is provided between the upper end of the partition plate 70 and the elastic sealing rubber pad 77.

An inner convex edge 54 is fixedly arranged on the periphery of a water inlet 52 at the bottom of the main valve body 5, and a valve body sealing ring groove 51 is arranged at the upper port part of the main valve body 5; the elastic rubber ring 12 is composed of an arc ring body 121, a valve body sealing ring 122 and an upper cover sealing ring 123, a through hole is formed in the middle of the arc ring body 121, the valve body sealing ring 122 is fixedly arranged at the lower part of the outer edge of the arc ring body 121, the upper cover sealing ring 123 is fixedly arranged at the upper part of the outer edge of the arc ring body 121, and the valve body sealing ring 122 is embedded into the valve body sealing ring groove 51 at the upper end of the main valve body 5 to play a role in sealing and fixedly connecting the upper end of the elastic rubber ring 12 and the upper end of the main valve body 5; an upper cover sealing ring groove 63 is arranged at the lower port of the upper cover 6, and an upper cover sealing ring 123 of the elastic rubber ring 12 is embedded into the upper cover sealing ring groove 63 to play a role in sealing and fixing connection between the upper end of the elastic rubber ring 12 and the lower port of the upper cover 6; a filter pipe 16 is arranged in the cavity of the water inlet joint 3 of the pipe body 1, one end of the filter pipe 16 is communicated with the water outlet joint 10 of the water inlet cavity, water in the cavity of the water inlet joint 3 firstly passes through the filter pipe 16 and then enters the water outlet joint 10 of the water inlet cavity, and impurities in the water are prevented from entering the cavity of the three-cavity valve body 71 of the motor valve 7;

The valve core 9 is composed of a valve core body 91 and a rubber ring pressing block 98, wherein the central section shape of the rubber ring pressing block 98 is Y-shaped, the rubber ring pressing block 98 is fixedly arranged in a mounting cavity at the upper part of the valve core body 91 through threaded connection at the lower end, a central groove 97 is arranged at the upper part of the rubber ring pressing block 98, and the lower end of the first spring 13 is arranged in the central groove 97; the valve core body 91 is characterized in that an inner concave ring groove 92 is formed in the side wall of the lower part of the valve core body 91 below the inner concave ring groove 92, lower centralizing blocks 95 which are uniformly distributed along the circumference are fixedly arranged on the side wall of the valve core body 91 above the inner concave ring groove 92, upper centralizing blocks 94 which are uniformly distributed along the circumference are fixedly arranged on the side wall of the valve core body 91, the valve core 9 is positioned at the central position in the cavity of the main valve body 5 in the vertical moving process through the upper centralizing blocks 94 and the lower centralizing blocks 95, the lower end of an arc-shaped ring body 121 of the elastic rubber ring 12 is fixedly arranged between the upper end of the valve core body 91 and the outward turning edge of the rubber ring pressing block 98, so that a sealed water conservancy control cavity 18 is formed between the upper side of the elastic rubber ring 12, the upper side of the valve core 9 and the inner side of the upper cover 6, a water passing cavity is formed between the lower side of the elastic rubber ring 12, the inner wall of the main valve body 5 and the outer wall of the valve core 9, the bottom of the valve core body 91 is fixedly provided with a water passing cavity matched with the water inlet hole 52, the circular arc surface bulge 93 matched with the inner convex surface 54 of the water inlet 52, and the circular arc surface bulge 93 is fixedly arranged at the periphery of the circular arc surface bulge 93, and the inner sealing ring 52 is matched with the inner sealing ring 52, and the inner sealing ring 52.

The middle part of the top plate in the cavity of the upper cover 6 is fixedly provided with a positioning ring 61, the upper end of the first spring 13 is sleeved on the positioning ring 61, and the first spring 13 is limited through the positioning ring 61.

The top plate of the upper cover 6 is fixedly provided with an upper cover water outlet 62, the upper cover water outlet connector 11 is fixedly arranged in the cavity of the upper cover water outlet 62 in a threaded connection manner, and the cavity of the upper cover water outlet 62 is communicated with the cavity of the upper cover 6 through a first through hole 64 in the top plate of the upper cover 6.

The one-way air inlet valve 8 is fixedly arranged on the upper cover 6 and is communicated with the water conservancy control cavity 18 through a second through hole 65 on the upper cover 6; as shown in fig. 7, it comprises a vertical pipe 81, a second spring 83, a valve ball 84, an outer cover 85 and a check valve sealing gasket 86, the lower end of the vertical pipe 81 is fixedly arranged on the top plate of the upper cover 6, the outer wall of the vertical pipe 81 is fixedly provided with the outer cover 85 through threaded connection, the middle part of the outer cover 85 is provided with a third through hole 87, the cavity of the outer cover 85 is internally provided with the check valve sealing gasket 86, the middle part of the check valve sealing gasket 86 is provided with a central hole matched with the third through hole 87, the inner cavity of the vertical pipe 81 is communicated with the inner cavity of the upper cover 6 through the second through hole 65 on the top plate of the upper cover 6, a valve ball 84 is arranged between the upper end of the second spring 83 and the check valve sealing gasket 86, the valve ball 84 is tightly sealed at the central hole of the check valve sealing gasket 86 through the second spring 83, when the hydraulic control cavity 18 forms negative pressure, the valve ball 84 moves down to open the central hole of the check valve sealing gasket 86, air instantaneously enters the cavity of the upper cover 6, and the negative pressure environment formed in the hydraulic control cavity 18 is destroyed.

The inner wall of the cavity of the vertical pipe 81 is uniformly and fixedly provided with 3-4 limiting plates 82, an air flow channel is formed between two adjacent limiting plates 82, and a second spring 83 and a valve ball 84 are positioned in the space surrounded by all the limiting plates 82 to prevent the valve ball 84 from shifting.

The central axes of the water inlet 52 at the bottom of the main valve body 5, the valve core 9, the elastic rubber ring 12, the first spring 13 and the positioning ring 61 of the upper cover 6 are overlapped.

The bottom of the pipe body 1 is fixedly provided with a base 2 so as to be placed on a built platform, and the pipe body 1, the water inlet connector 3, the water outlet connector 4 and the main valve body 5 are formed into a whole through injection molding.

When the utility model is used, the utility model is arranged on a water supply pipeline, the motor valve 7 is powered on, the irrigation water pump is started, pressurized water enters the cavity of the water inlet joint 3 of the pipe body 1, and then enters the first water cavity 711 through the filter pipe 16, the water inlet cavity water outlet joint 10, the water inlet connecting pipe 14 and the water inlet 75 of the motor valve 7; when the utility model is opened for irrigation, the motor driving device 72 drives the valve opening pressing block 721 to press down the outlet of the first upper sealing pipe 78, the valve closing pressing block 722 is in a separated state with the elastic sealing rubber pad 77, the third water cavity 713 is communicated with the second water cavity 712 through a gap between the elastic sealing rubber pad 77 and the upper end of the partition plate 70, so that water in the water conservancy control cavity 18 between the upper cover 6 and the valve core 9 enters the third water cavity 713 through the upper cover water outlet joint 11, the communicating pipe 15 and the water return port 76, finally is discharged from the water outlet 74 corresponding to the second water cavity 712, the pressure in the water conservancy control cavity 18 is balanced with the outside and is smaller than the water supply pressure of the water pump, pressurized water in the water inlet joint 3 of the pipe body 1 overcomes the self elasticity of the first spring 13 and the elastic rubber ring 12, and is upwards against the valve core 9, the water inlet 52 at the bottom of the main valve body 5 is opened, the pressurized water flows from the water inlet 52 into the cavity of the main valve body 5 below the elastic rubber ring 12, flows into the water outlet 53 on the side wall of the main valve body 5 through the concave 92 on the side wall of the valve core 9, is finally discharged from the water outlet 74 on the side wall of the main valve body 5, the pressure water outlet 53 reaches the water outlet groove 53 on the side of the main valve body 4, and enters the water outlet groove 4 of the water outlet joint for irrigation. If the utility model needs to be normally closed, the motor driving device 72 drives the valve closing pressing block 722 to press down the elastic sealing rubber cushion 77 to seal the outlet of the second upper sealing pipe 79, the valve opening pressing block 721 is lifted under the elastic action of the elastic sealing rubber cushion 77, at the moment, the first water cavity 711 is communicated with the third water cavity 713 through the gap between the upper end of the partition plate 70 and the elastic sealing rubber cushion 77, pressurized water in the water inlet joint 3 of the pipe body 1 enters the first water cavity 711 through the water inlet cavity water outlet joint 10, the water inlet connecting pipe 14 and the water inlet 75 of the motor valve 7, then enters the cavity of the upper cover 6 through the first upper sealing pipe 78, the third water cavity 713, the water return port 76, the communicating pipe 15 and the upper cover water outlet joint 11, the water pressure in the water conservancy control cavity 18 is larger than the water pressure in the water inlet joint 3 of the pipe body 1, and the valve core 9 is pushed to and sealed at the water inlet hole 52 of the main valve body 5, so that the water inlet hole 52 is closed. If sudden events such as sudden shutdown of the water pump are encountered, the water pressure in the water inlet joint 3 of the pipe body 1 suddenly drops, so that the water pressure in the water conservancy control cavity 18 suddenly drops, at the moment, the one-way air inlet valve 8 immediately opens air inlet, so that a negative pressure environment is not formed in the water conservancy control cavity 18, and the elastic sealing rubber cushion 77 is in a normal use state and cannot influence the next normal work.

As an improvement of the one-way intake valve 8, as shown in fig. 10; the one-way air inlet valve 8 is fixedly arranged on the communicating pipe 15 through the three-way joint 17, so that the one-way air inlet valve 8 is communicated with the water conservancy control cavity 18 through the three-way joint 17 and the communicating pipe 15; the one-way air inlet valve 8 consists of a vertical pipe 81, an outer cover 85, a one-way valve sealing gasket 86 and an elastic rubber sealing nozzle 88, wherein the lower end of the vertical pipe 81 is fixedly connected with the upper opening of the three-way joint 17, the other two interfaces of the three-way joint 17 are respectively connected with the communicating pipe 15, the upper end of the vertical pipe 81 is fixedly connected with the outer cover 85, a third through hole 87 is formed in the middle of the outer cover 85, the elastic rubber sealing nozzle 88 is fixedly arranged on the inner wall of the outer cover 85, the inner cavity of the elastic rubber sealing nozzle 88 is communicated with the third through hole 87, and the one-way valve sealing gasket 86 is arranged between the vertical pipe 81 and the top plate of the outer cover 85; when the hydraulic control cavity 18 is used, the elastic rubber sealing nozzle 88 can be opened quickly when negative pressure is formed in the hydraulic control cavity 18, air enters the cavity of the three-way joint 17 instantly, and therefore the air enters the hydraulic control cavity 18 through the communicating pipe 15, and the hydraulic control cavity 18 is not allowed to form a negative pressure environment.

As another improvement of the unidirectional air inlet valve 8, as shown in fig. 11, 12 and 13, the unidirectional air inlet valve 8 is composed of a vertical pipe 81, a second spring 83, a sliding cover 891, a supporting plate 892, a sliding seat 893 and a sealing ring 894, the lower end of the vertical pipe 81 is in threaded connection with the upper opening of the three-way joint 17, an inclined plane is arranged at the inner edge of the lower end of the vertical pipe 81, the second spring 83, the sliding cover 891, the supporting plate 892 and the sliding seat 893 are arranged in the vertical pipe 81 cavity, the sliding cover 891 and the sliding seat 893 are fixedly connected through 3-4 uniformly distributed supporting plates 892, two ends of the second spring 83 are positioned between an inner boss of the vertical pipe 81 and the sliding seat 891, the second spring 83 is sleeved on the upper parts of all the supporting plates 892, a third through hole 87 is arranged in the middle of the sliding cover 891, an air inlet cavity 895 communicated with the third through hole 87 is arranged in the middle of the upper end of all the supporting plates 892, a fixed groove 896 is arranged between two adjacent supporting plates 892, and is a sliding seat 893 is matched with the inclined plane of the lower edge of the vertical pipe 81; when the hydraulic control cavity 18 is used, when negative pressure is formed in the hydraulic control cavity 18, the sliding cover 891, the supporting plate 892 and the sliding seat 893 can quickly descend, so that the sealing ring 894 is separated from the inclined plane of the inner edge of the lower end of the vertical pipe 81, air instantaneously enters the air inlet cavity 895 from the third through hole 87 and then enters the cavity of the three-way joint 17 from the lower edge of the vertical pipe 81 through the air inlet flow passage between the adjacent supporting plates 892, and then enters the hydraulic control cavity 18 through the communicating pipe 15, and the hydraulic control cavity 18 is not allowed to form a negative pressure environment.

Claims (10)

1. The utility model provides a water conservancy control valve of water-resistant atmospheric pressure fluctuation interference, including body (1), main valve body (5), upper cover (6), motor valve (7), case (9), elastic rubber ring (12) and spring (13), the both ends of body (1) fixedly be equipped with water inlet joint (3) and play water joint (4) respectively, the middle part of body (1) is fixed and is equipped with main valve body (5), the bottom of main valve body (5) is equipped with water inlet (52) that are linked together with the inner chamber of water inlet joint (3), be equipped with on the lateral wall of main valve body (5) with go out water hole (53) that the inner chamber of water joint (4) is linked together, the upper end of main valve body (5) is fixed and is equipped with upper cover (6), the intracavity of main valve body (5) is equipped with case (9), the lower extreme and the lower extreme of case (9) of main valve body (5) looks sealed adaptation, the upper end of case (9) and the lower extreme sealing fixed connection of elastic rubber ring (12), the upper end of elastic rubber ring (12) is sealed and is fixed between main valve body (6) and upper cover (18) and upper side of the upper cover (18), a first spring (13) is arranged between the upper end of the valve core (9) and the upper cover (6), a water inlet cavity water outlet connector (10) communicated with the inner cavity of the water inlet connector (3) is fixedly arranged on the side wall of the pipe body (1), an upper cover water outlet connector (11) communicated with the inner cavity of the upper cover (6) is arranged at the top of the upper cover (6), and a motor valve (7) is fixedly arranged on the side wall of the upper cover (6); a water inlet (75) of the motor valve (7) is communicated with the water inlet cavity water outlet joint (10) through a water inlet connecting pipe (14), and a water return port (76) of the motor valve (7) is communicated with the upper cover water outlet joint (11) through a communicating pipe (15); the method is characterized in that: the water conservancy control cavity (18) is communicated with the one-way air inlet valve (8).

2. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 1, wherein: the motor valve (7) comprises a three-cavity valve body (71), a partition plate (70), a motor driving device (72), a water outlet (74), a water inlet (75), a water return port (76), an elastic sealing rubber pad (77), a first upper sealing pipe (78) and a second upper sealing pipe (79), wherein the motor driving device (72) is fixedly arranged at the upper end of the three-cavity valve body (71), the motor driving device (72) is connected with a power supply, and a valve opening pressing block (721) and a valve closing pressing block (722) which are respectively telescopic are arranged at the bottom of the motor driving device (72); the inner cavity of the three-cavity valve body (71) is divided into a first water cavity (711), a second water cavity (712) and a third water cavity (713) through a partition plate (70), an elastic sealing rubber pad (77) is arranged at the upper end of the inner cavity of the three-cavity valve body (71), the periphery of the elastic sealing rubber pad (77) is fixed between the three-cavity valve body (71) and a motor driving device (72) along a sealing way, the first water cavity (711) is communicated with a water inlet (75), the second water cavity (712) is communicated with a water outlet (74), the third water cavity (713) is communicated with a water return port (76), and the third water cavity (713) is positioned between the first water cavity (711) and the second water cavity (712); the upper part of the first water cavity (711) is fixedly provided with a first upper sealing pipe (78), the upper part of the second water cavity (712) is fixedly provided with a second upper sealing pipe (79), the position of the valve opening pressing block (721) is matched with the first upper sealing pipe (78), and the position of the valve closing pressing block (722) is matched with the second upper sealing pipe (79); a gap is arranged between the upper end of the baffle plate (70) and the elastic sealing rubber pad (77).

3. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 1, wherein:

An inner convex edge (54) is fixedly arranged at the periphery of a water inlet (52) at the bottom of the main valve body (5), and a valve body sealing ring groove (51) is arranged at the upper port part of the main valve body (5); the elastic rubber ring (12) consists of an arc ring body (121), a valve body sealing ring (122) and an upper cover sealing ring (123), a through hole is formed in the middle of the arc ring body (121), the valve body sealing ring (122) is fixedly arranged at the lower part of the outer edge of the arc ring body (121), the upper cover sealing ring (123) is fixedly arranged at the upper part of the outer edge of the arc ring body (121), and the valve body sealing ring (122) is embedded into a valve body sealing ring groove (51) at the upper end of the main valve body (5); an upper cover sealing ring groove (63) is arranged at the lower port of the upper cover (6), and an upper cover sealing ring (123) of the elastic rubber ring (12) is embedded into the upper cover sealing ring groove (63); a filter pipe (16) is arranged in the cavity of the water inlet joint (3) of the pipe body (1), and one end of the filter pipe (16) is communicated with the water outlet joint (10) of the water inlet cavity;

The valve core (9) is composed of a valve core body (91) and a rubber ring pressing block (98), the central section shape of the rubber ring pressing block (98) is Y-shaped, the rubber ring pressing block (98) is fixedly arranged in a mounting cavity at the upper part of the valve core body (91) through threaded connection at the lower end, a central groove (97) is formed at the upper part of the rubber ring pressing block (98), and the lower end of a first spring (13) is arranged in the central groove (97); the valve core is characterized in that an inner concave ring groove (92) is formed in the side wall of the lower portion of the valve core body (91) below the inner concave ring groove (92), lower centering blocks (95) which are uniformly distributed along the circumference are fixedly arranged on the side wall of the valve core body (91) above the inner concave ring groove (92), upper centering blocks (94) which are uniformly distributed along the circumference are fixedly arranged on the side wall of the valve core body (91), the lower end of an arc-shaped ring body (121) of the elastic rubber ring (12) is fixedly arranged between the upper end of the valve core body (91) and the everting edge of the rubber ring pressing block (98), arc-shaped surface protrusions (93) which are matched with water inlet holes (52) of the main valve body (5) are fixedly arranged at the bottom of the valve core body (91), and valve core sealing rings (96) which are matched with inner convex edges (54) around the water inlet holes (52) are fixedly arranged at the periphery of the arc-shaped protrusions (93).

4. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 1, wherein: the middle part of the top plate in the cavity of the upper cover (6) is fixedly provided with a positioning ring (61), and the upper end of the first spring (13) is sleeved on the positioning ring (61).

5. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 1, wherein: the top plate of the upper cover (6) is fixedly provided with an upper cover water outlet (62), the upper cover water outlet connector (11) is fixedly connected with threads and arranged in the cavity of the upper cover water outlet (62), and the cavity of the upper cover water outlet (62) is communicated with the cavity of the upper cover (6) through a first through hole (64) on the top plate of the upper cover (6).

6. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 1, wherein: the one-way air inlet valve (8) is fixedly arranged on the upper cover (6) and is communicated with the water conservancy control cavity (18) through a second through hole (65) on the upper cover (6); the one-way air inlet valve (8) constitute by riser (81), no. two spring (83), valve ball (84), enclosing cover (85) and check valve sealing pad (86), the lower extreme of riser (81) is fixed to be set up on the roof of upper cover (6), the outer wall of riser (81) is equipped with enclosing cover (85) through threaded connection is fixed, the middle part of enclosing cover (85) is equipped with No. three through-holes (87), enclosing cover (85) intracavity is equipped with check valve sealing pad (86), the middle part of check valve sealing pad (86) is equipped with the centre bore with No. three through-holes (87) looks adaptation, the inner chamber of riser (81) is linked together with the inner chamber of upper cover (6) through No. two through-holes (65) on the roof of upper cover (6), the intracavity of riser (81) is equipped with No. two spring (83), be equipped with valve ball (84) between the upper end of No. two spring (83) and check valve sealing pad (86), the centre bore of valve ball (84) and check valve sealing pad (86) looks adaptation.

7. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 6, wherein: 3-4 limiting plates (82) are uniformly distributed and fixed on the inner wall of the cavity of the vertical pipe (81), and a second spring (83) and a valve ball (84) are positioned in the space surrounded by all the limiting plates (82).

8. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 1, wherein: the bottom of the pipe body (1) is fixedly provided with a base (2).

9. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 1, wherein: the one-way air inlet valve (8) is fixedly arranged on the communicating pipe (15) through a three-way joint (17); the one-way air inlet valve (8) constitute by riser (81), enclosing cover (85), check valve sealing washer (86) and elastic rubber sealing mouth (88), the lower extreme of riser (81) is connected fixedly with the upper shed of three way connection (17), other two interfaces of three way connection (17) are connected with communicating pipe (15) respectively, the upper end of riser (81) is connected fixedly with enclosing cover (85), the middle part of enclosing cover (85) is equipped with No. three through-holes (87), fixedly on the inner wall of enclosing cover (85) is equipped with elastic rubber sealing mouth (88), the inner chamber of elastic rubber sealing mouth (88) is linked together with No. three through-holes (87), be equipped with check valve sealing washer (86) between the roof of riser (81) and enclosing cover (85).

10. The hydraulic control valve resistant to hydraulic pressure fluctuation interference of claim 1, wherein: the one-way air inlet valve (8) constitute by riser (81), no. two springs (83), sliding closure (891), backup pad (892), slide (893) and sealing washer (894), riser (81) lower extreme threaded connection is in the upper shed of three way connection (17), the interior mouth of riser (81) lower extreme is equipped with the inclined plane along the department, riser (81) intracavity is equipped with No. two springs (83), sliding closure (891), backup pad (892) and slide (893), connect fixedly through evenly distributed's 3-4 backup pad (892) between sliding closure (891) and slide (893), the both ends of No. two springs (83) are located between the interior boss of riser (81) and sliding closure (891), no. two spring (83) cover are established in the upper portion of all backup pads (892), the middle part of sliding closure (891) is equipped with No. three through-holes (87), the upper end middle part of all backup pads (892) is equipped with air inlet chamber (895) that are linked together with No. three through-holes (87), be equipped with the fixed slot (896) along the fixed periphery of air inlet (896) that is linked together with sliding closure (896.