Farmland concealed pipe drainage device

Abstract

The invention relates to a farmland concealed pipe drainage device which comprises a drainage concealed pipe, a drainage connector, a drainage sleeve and an adjusting sleeve, after the drainage concealed pipe, the drainage sleeve and the adjusting sleeve are buried in soil, the drainage concealed pipe, the drainage sleeve and the adjusting sleeve can be adjusted by utilizing the buoyancy of a first floating block and a second floating block in water and the action of the elastic force of a second spring and a third spring; when the water content in the soil is too high, water flow sequentially passes through a drainage cylinder, a first connecting pipe, an intercepting sleeve and a drainage connector, enters a drainage concealed pipe and then flows to a ditch, and farmland drainage is achieved; under the limiting effect of the annular partition plate, silt carried in the water is blocked in the drainage connector, and the situation that the silt carried by the water is discharged into the ditch to cause soil loss is avoided; along with the reduction of the moisture of the surface layer of the soil and under the transpiration, the moisture in the inner sleeve is reduced, the first floating block slides downwards under the elastic action of the second spring, the drainage work of the farmland is stopped, and the situation that the moisture content in the soil is too low due to excessive drainage is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy irrigation, and in particular relates to a farmland concealed pipe drainage device. Background Art

[0002] Farmland irrigation has been a very important part of people's production and life since ancient times, and is an indispensable condition for ensuring a good harvest of crops.

[0003] In today's agricultural production, with the active support of the country and the gradual improvement of infrastructure, most farmlands have a complete ditch system built around them. Water can be taken directly from the irrigation ditch during irrigation, or when floods occur, underground pipes can be buried in the farmland. When the water content in the soil of the farmland reaches saturation, the moisture in the soil penetrates into the underground pipes, and then the water is discharged into the irrigation ditch in time through the underground pipes, achieving the effect of drought and flood resistance. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a farmland concealed pipe drainage device to solve the above-mentioned problem.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a farmland concealed pipe drainage device, including a drainage concealed pipe, a drainage joint, a drainage sleeve and an adjusting sleeve, the drainage concealed pipe is buried under the soil layer, a drainage joint is arranged between adjacent drainage concealed pipes, four ports are arranged on the drainage joint, the left and right ports of the drainage joint are respectively connected with the ports of the corresponding end of the drainage concealed pipe, the drainage sleeve is arranged above the drainage joint, and the adjusting sleeve is arranged below the drainage joint, a first connecting pipe is arranged between the drainage sleeve and the drainage joint, the upper end of the first connecting pipe is connected to the lower end of the drainage sleeve, and the lower end of the first connecting pipe is connected to the upper end port of the drainage joint, a second connecting pipe is arranged between the adjusting sleeve and the drainage joint, the upper end of the second connecting pipe is connected to the lower port of the drainage joint, and the lower end of the second connecting pipe is connected to the upper end of the adjusting sleeve.

[0006] A shut-off sleeve is arranged between the body of the drain joint and the upper end port of the drain joint, the lower end port of the shut-off sleeve is connected to the drain joint, a plug is arranged in the shut-off sleeve, the port at the lower end of the shut-off sleeve is blocked by the plug, a sliding rod is slidably connected to the middle part of the plug, a first spring is sleeved on the sliding rod, the upper end of the first spring is fixedly connected to the upper end of the sliding rod, the lower end of the first spring is fixedly connected to the upper side of the plug, a limiting protrusion is arranged at the lower end of the sliding rod, the position of the plug is limited by the limiting protrusion, a connecting rod is threadedly fixedly connected to the lower end of the sliding rod, and the connecting rod is inserted into the adjusting sleeve.

[0007] The drainage sleeve is provided with a limited partition near the upper side, and the interior of the drainage sleeve is composed of an inner sleeve, an upper sleeve and a lower sleeve. The upper sleeve and the lower sleeve are both annular structures and are sleeved on the inner sleeve. An opening is provided at the upper end of the upper sleeve. The upper sleeve is located on the upper side of the limited partition, and the lower sleeve is located on the lower side of the limited partition. The upper sleeve is connected with the inner sleeve. The drainage sleeve located at the lower side of the limited partition is buried in the soil, and the upper side of the limited partition is located outside the soil layer. The lower end of the inner sleeve is connected with the drainage cylinder; the lower end of the drainage cylinder passes through the lower sleeve, and the drainage The lower end of the cylinder is connected with the first connecting pipe, and the side wall of the drainage cylinder is provided with a through hole to connect the drainage cylinder with the lower sleeve. The limiting sleeve is slidably connected in the drainage cylinder, and the side wall of the limiting sleeve is provided with a through hole. The upper end of the limiting sleeve is inserted into the inner sleeve, and a first floating block is fixed on the upper end of the limiting sleeve, and a second spring is provided in the inner sleeve, one end of the second spring is fixedly connected to the first floating block, and the other end of the second spring is fixedly connected to the upper side wall of the inner sleeve; the outer side walls of the upper sleeve and the lower sleeve are provided with openings, and the opening parts of the side walls of the upper sleeve and the lower sleeve are provided with filters.

[0008] The lower end of the adjusting sleeve is a conical structure, and a liquid inlet is arranged near the lower end of the adjusting sleeve, and a filter is arranged at the liquid inlet. A second floating block is slidingly connected in the adjusting sleeve, and a third spring is arranged in the adjusting sleeve. One end of the third spring is fixedly connected to the second floating block, and the other end of the third spring is fixedly connected to the upper end of the adjusting sleeve. The lower end of the connecting rod is threadedly fixedly connected to the second floating block.

[0009] Preferably, an annular partition is provided inside the drainage joint, the annular partition is a contraction-shaped structure, and the outer edge of the annular partition is close to the left and right port parts of the drainage joint.

[0010] The beneficial effects of the present invention are as follows: after the drainage concealed pipe, the drainage sleeve and the adjusting sleeve are buried in the soil, after the water gradually penetrates into the soil layer, the water on the soil surface enters the upper sleeve and the inner sleeve in turn, and as the water in the inner sleeve gradually increases, the buoyancy of the first floating block in the water and the elastic force of the second spring are utilized to drive the current limiting sleeve to move back and forth up and down to control the opening and closing of the drainage sleeve; when the water in the soil increases and penetrates downward, so that the water in the soil at the position where the adjusting sleeve is located reaches saturation, the water in the soil enters from the through hole near the lower end of the adjusting sleeve, and the buoyancy of the second floating block in the water and the elastic force of the third spring are utilized to drive the sliding rod to slide up and down, and before the limiting protrusion contacts the plug, the elastic force of the first spring causes the plug to always cut off the water. The port at the lower end of the flow sleeve is blocked, and when the limiting protrusion contacts the plug, the limiting protrusion pushes the plug to separate from the port at the lower end of the intercepting sleeve, and then the moisture in the soil penetrates into the lower sleeve, and then passes through the drainage tube, the first connecting pipe, the intercepting sleeve, and the drainage joint in sequence into the drainage pipe and then flows to the ditch to achieve farmland drainage; when the drainage pipe is used for drainage, the silt carried in the moisture is blocked in the drainage joint under the limiting effect of the annular partition to prevent the moisture from carrying silt into the ditch and causing soil loss; as the moisture on the soil surface decreases and due to transpiration, the moisture in the inner sleeve decreases, the first floating block slides downward under the elastic force of the second spring to stop the drainage of the farmland and prevent excessive drainage from causing too low water content in the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the main structure diagram of the concealed pipe drainage device;

[0012] Figure 2 This is the internal structure diagram of the drainage joint;

[0013] Figure 3 This is the internal structure diagram of the drainage sleeve;

[0014] Figure 4 This is a diagram of the internal structure of the adjusting sleeve.

[0015] Numbers in the figure: 1 drainage concealed pipe; 2 drainage joint; 201 circular partition; 3 drainage sleeve; 301 limiting partition; 302 inner sleeve; 303 upper sleeve; 304 lower sleeve; 305 drainage sleeve; 4 adjustment sleeve; 5 first connecting pipe; 6 second connecting pipe; 7 intercepting sleeve; 8 plug; 9 sliding rod; 901 limiting protrusion; 10 first spring; 11 connecting rod; 12 limiting sleeve; 13 first floating block; 14 second spring; 15 second floating block; 16 third spring. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0017] like Figure 1-4As shown, a farmland concealed pipe drainage device includes a concealed drainage pipe 1, a drainage joint 2, a drainage sleeve 3 and an adjusting sleeve 4. The concealed drainage pipe 1 is buried under the soil layer, and a drainage joint 2 is arranged between adjacent concealed drainage pipes 1. The drainage joint 2 is provided with four ports, upper, lower, left and right. The left and right ports of the drainage joint 2 are respectively connected with the ports of the corresponding end of the concealed drainage pipe 1. The drainage sleeve 3 is arranged above the drainage joint 2, and the adjusting sleeve 4 is arranged below the drainage joint 2. A first connecting pipe 5 is arranged between the drainage sleeve 3 and the drainage joint 2, and the upper end of the first connecting pipe 5 is connected to the lower end of the drainage sleeve 3, and the lower end of the first connecting pipe 5 is connected to the upper end port of the drainage joint 2. A second connecting pipe 6 is arranged between the adjusting sleeve 4 and the drainage joint 2, and the upper end of the second connecting pipe 6 is connected to the lower port of the drainage joint 2, and the lower end of the second connecting pipe 6 is connected to the upper end of the adjusting sleeve 4.

[0018] In this embodiment, a shut-off sleeve 7 is arranged between the body of the drain joint 2 and the upper end port of the drain joint 2, the lower end port of the shut-off sleeve 7 is connected to the drain joint 2, a plug 8 is arranged inside the shut-off sleeve 7, the plug 8 is used to block the port at the lower end of the shut-off sleeve 7, a slide rod 9 is slidably connected to the middle part of the plug 8, a first spring 10 is sleeved on the slide rod 9, the upper end of the first spring 10 is fixedly connected to the upper end of the slide rod 9, the lower end of the first spring 10 is fixedly connected to the upper side of the plug 8, a limiting protrusion 901 is arranged at the lower end of the slide rod 9, the position of the plug 8 is limited by the limiting protrusion 901, the lower end of the slide rod 9 is threadedly fixedly connected to a connecting rod 11, and the connecting rod 11 is inserted into the adjusting sleeve 4.

[0019] In this embodiment, a limiting baffle 301 is provided near the upper side of the drainage sleeve 3, and the interior of the drainage sleeve 3 is composed of an inner sleeve 302, an upper sleeve 303, and a lower sleeve 304. The upper sleeve 303 and the lower sleeve 304 are both annular structures and are sleeved on the inner sleeve 302. An opening is provided at the upper end of the upper sleeve 303. The upper sleeve 303 is located on the upper side of the limiting baffle 301, and the lower sleeve 304 is located on the lower side of the limiting baffle 301. The upper sleeve 303 is connected with the inner sleeve 302. The drainage sleeve 3 located at the lower side of the limiting baffle 301 is buried in the soil, and the upper side of the limiting baffle 301 is located outside the soil layer. The lower end of the inner sleeve 302 is connected with the drainage cylinder 305; the lower end of the drainage cylinder 305 passes through the lower sleeve Cylinder 304, and the lower end of the drainage cylinder 305 is connected with the first connecting pipe 5, the side wall of the drainage cylinder 305 is provided with a through hole, so that the drainage cylinder 305 is connected with the lower sleeve 304, the limiting sleeve 12 is slidably connected in the drainage cylinder 305, the side wall of the limiting sleeve 12 is provided with a through hole, the upper end of the limiting sleeve 12 is inserted into the inner sleeve 302, and the upper end of the limiting sleeve 12 is fixed with a first floating block 13, and the inner sleeve 302 is provided with a second spring 14, one end of the second spring 14 is fixedly connected with the first floating block 13, and the other end of the second spring 14 is fixedly connected with the upper side wall of the inner sleeve 302; the outer side walls of the upper sleeve 303 and the lower sleeve 304 are provided with openings, and the opening parts of the side walls of the upper sleeve 303 and the lower sleeve 304 are provided with filter screens.

[0020] In this embodiment, the lower end of the adjusting sleeve 4 is a conical structure, and a liquid inlet is provided near the lower end of the adjusting sleeve 4, and a filter is provided at the liquid inlet. A second floating block 15 is slidably connected in the adjusting sleeve 4, and a third spring 16 is provided in the adjusting sleeve 4. One end of the third spring 16 is fixedly connected to the second floating block 15, and the other end of the third spring 16 is fixedly connected to the upper end of the adjusting sleeve 4. The lower end of the connecting rod 11 is threadedly fixedly connected to the second floating block 15.

[0021] In this embodiment, an annular partition plate 201 is disposed inside the drainage joint 2 . The annular partition plate 201 is a contraction-shaped structure, and the outer edge of the annular partition plate 201 is close to the left and right port portions of the drainage joint 2 .

[0022] In this embodiment, after the drainage concealed pipe 1, the drainage sleeve 3, and the regulating sleeve 4 are buried in the soil, with rainfall or irrigation, moisture gradually penetrates into the soil layer, and the moisture on the soil surface enters the upper sleeve 303 and the inner sleeve 302 in turn. As the moisture in the inner sleeve 302 gradually increases, the first floating block 13 is submerged. Under the action of buoyancy, the first floating block 13 compresses the second spring 14, and the first floating block 13 drives the current limiting sleeve 12 to slide upward, so that the current limiting sleeve 12 is misaligned and connected with the through hole on the side wall of the drainage tube 305. At the same time, under the elastic force of the first spring 10, the plug 8 blocks the through hole at the lower end of the intercepting sleeve 7, preventing moisture in the soil from entering the drainage concealed pipe 1.

[0023] When the moisture in the soil increases and penetrates downward, so that the moisture in the soil at the position where the adjusting sleeve 4 is located reaches saturation, the moisture in the soil enters from the through hole near the lower end of the adjusting sleeve 4, and under the action of buoyancy, the second floating block 15 slides upward, and drives the sliding rod 9 to slide upward through the connecting rod 11. When the limiting protrusion 901 contacts the plug 8, it pushes the plug 8 to slide upward, so that the intercepting sleeve 7 is connected with the drainage joint 2. At this time, after the moisture in the soil penetrates into the lower sleeve 304, it passes through the drainage tube 305, the first connecting pipe 5, the intercepting sleeve 7, and the drainage joint 2 in turn into the drainage pipe 1 and then flows to the ditch, realizing farmland drainage; when the drainage pipe 1 is used for drainage, under the limiting action of the annular partition 201, the mud and sand carried in the water are blocked in the drainage joint 2, so as to prevent the water from carrying mud and sand into the ditch and causing soil loss.

[0024] As the moisture content in the soil surface decreases and due to transpiration, the moisture content in the inner sleeve 302 decreases, and the first floating block 13 slides downward under the elastic force of the second spring 14, so that the through holes between the current limiting sleeve 12 and the side wall of the drainage tube 305 are staggered, and the drainage work of the farmland is stopped. The buoyancy generated by the moisture in the soil at different depths is used to control the sliding of the first floating block 13 and the second floating block 15 respectively, so as to control the moisture in the soil to enter the drainage pipe 1 to achieve farmland drainage.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A farmland concealed pipe drainage device, comprising a concealed drainage pipe, a drainage joint, a drainage sleeve and an adjustment sleeve, characterized in that: The drainage concealed pipe is buried under the soil layer, and a drainage joint is arranged between adjacent drainage concealed pipes. The drainage joint is provided with four ports, upper, lower, left and right. The left and right ports of the drainage joint are respectively connected with the ports of the corresponding end of the drainage concealed pipe. The drainage sleeve is arranged above the drainage joint, and the adjustment sleeve is arranged below the drainage joint. A first connecting pipe is arranged between the drainage sleeve and the drainage joint, and the upper end of the first connecting pipe is connected to the lower end of the drainage sleeve, and the lower end of the first connecting pipe is connected to the upper end port of the drainage joint. A second connecting pipe is arranged between the adjusting sleeve and the drainage joint, and the upper end of the second connecting pipe is connected to the lower end port of the drainage joint, and the lower end of the second connecting pipe is connected to the upper end of the adjusting sleeve.

2. The farmland concealed pipe drainage device according to claim 1 is characterized in that: A cut-off sleeve is arranged between the body of the drain joint and the upper end port of the drain joint, the lower end port of the cut-off sleeve is connected with the drain joint, a plug is arranged in the cut-off sleeve, a sliding rod is slidably connected to the middle part of the plug, a first spring is sleeved on the sliding rod, the upper end of the first spring is fixedly connected to the upper end of the sliding rod, the lower end of the first spring is fixedly connected to the upper side of the plug, a limiting protrusion is arranged at the lower end of the sliding rod, a connecting rod is threadedly fixedly connected to the lower end of the sliding rod, and the connecting rod is inserted into the adjusting sleeve.

3. The farmland concealed pipe drainage device according to claim 1 is characterized in that: The drainage sleeve is provided with a limited partition near the upper side, and the interior of the drainage sleeve is composed of an inner sleeve, an upper sleeve and a lower sleeve. The upper sleeve and the lower sleeve are both annular structures and are sleeved on the inner sleeve. An opening is provided at the upper end of the upper sleeve. The upper sleeve is located on the upper side of the limited partition, and the lower sleeve is located on the lower side of the limited partition. The upper sleeve is connected with the inner sleeve. The drainage sleeve located at the lower side of the limited partition is buried in the soil, and the upper side of the limited partition is located outside the soil layer. The lower end of the inner sleeve is connected with the drainage cylinder; the lower end of the drainage cylinder passes through the lower sleeve, and the drainage The lower end of the cylinder is connected with the first connecting pipe, and the side wall of the drainage cylinder is provided with a through hole to connect the drainage cylinder with the lower sleeve. The limiting sleeve is slidably connected in the drainage cylinder, and the side wall of the limiting sleeve is provided with a through hole. The upper end of the limiting sleeve is inserted into the inner sleeve, and a first floating block is fixed on the upper end of the limiting sleeve, and a second spring is provided in the inner sleeve, one end of the second spring is fixedly connected to the first floating block, and the other end of the second spring is fixedly connected to the upper side wall of the inner sleeve; the outer side walls of the upper sleeve and the lower sleeve are provided with openings, and the opening parts of the side walls of the upper sleeve and the lower sleeve are provided with filters.

4. The farmland concealed pipe drainage device according to claim 2 is characterized in that: The lower end of the adjusting sleeve is a conical structure, and a liquid inlet is arranged near the lower end of the adjusting sleeve, and a filter is arranged at the liquid inlet. A second floating block is slidingly connected in the adjusting sleeve, and a third spring is arranged in the adjusting sleeve. One end of the third spring is fixedly connected to the second floating block, and the other end of the third spring is fixedly connected to the upper end of the adjusting sleeve. The lower end of the connecting rod is threadedly fixedly connected to the second floating block.

5. The farmland concealed pipe drainage device according to claim 1 is characterized in that: An annular partition is arranged inside the drainage joint. The annular partition is a contraction-shaped structure, and the outer edge of the annular partition is close to the left and right ports of the drainage joint.

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