Farmland rain and sewage diversion device

Abstract

The utility model discloses a farmland rain and sewage diversion device which comprises an upper water diversion port and a lower water diversion port structure, the upper water diversion port and the lower water diversion port are separated through a middle partition plate 1, a double-four-bar mechanism is fixed below the middle partition plate 1 and above the rear portion of a baffle plate 4, and the double-four-bar mechanism closes the lower water diversion port under the action of large water flow impact force. Water flow enters the upper water distribution opening and flows into a follow-up pipeline through the upper water distribution opening. The rainwater and sewage diversion device has the advantages that the diversion device can be flexibly arranged at the end of a drainage ditch, the requirement for electric or hydraulic drive is omitted, and rainwater and sewage can be automatically diverted according to the concentration of pollutants in farmland drainage. By means of the design, flow division of low-pollutant-concentration drainage and high-pollutant-concentration drainage of a farmland is effectively achieved, and excessive treatment burden caused by the fact that the high-pollutant-concentration drainage enters a treatment facility is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to agricultural water conservancy facilities, in particular to a device for separating rainwater and sewage in farmland. BACKGROUND

[0002] Nutrients such as nitrogen and phosphorus in farmland soil are easily affected by surface runoff caused by rainfall, resulting in significant loss. The loss of nitrogen and phosphorus in farmland is significantly correlated with rainfall. Under the condition of light rain or early stage of heavy rain, the contact time between soil and water is longer, resulting in higher concentration of nitrogen and phosphorus in surface runoff, which needs to be treated by purification measures; while under the condition of late stage of heavy rain, the concentration of nitrogen and phosphorus in surface runoff is lower, and no reduction treatment is needed. The traditional drainage ditch usually adopts the design of rainwater and sewage combined flow, and the rainwater and sewage are mixed and discharged, which increases the difficulty and cost of subsequent treatment. At the same time, due to the lack of rainwater and sewage separation equipment, the separation treatment cannot be carried out according to the difference in water quality, resulting in the mixing of low and high concentration of pollutants in the drainage, which reduces the treatment efficiency. Overall, the traditional drainage ditch has two problems in practical application: 1) unable to adjust the separation strategy according to the concentration change of pollutants in the drainage; 2) the high concentration of pollutants in the drainage entering the sewage treatment facility causes excessive treatment burden. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present application is to provide a device for separating rainwater and sewage in farmland in view of the deficiencies of the prior art.

[0004] The technical scheme of the present application is as follows:

[0005] A device for separating rainwater and sewage in farmland, comprising an upper water distribution port and a lower water distribution port structure, the upper water distribution port and the lower water distribution port are separated by an intermediate partition plate 1, a double four-bar linkage mechanism is fixed below the intermediate partition plate 1 and above the rear of the baffle plate 4, the double four-bar linkage mechanism closes the lower water distribution port under the action of a larger water flow impact force, the water flow enters the upper water distribution port and flows into the subsequent pipeline through the upper water distribution port.

[0006] The device for separating rainwater and sewage in farmland, the double four-bar linkage mechanism comprises six rod members: a first crank rod 2, a power spring 3, a second crank rod 5, an input rod 6, a first auxiliary connecting rod 7, a second auxiliary connecting rod 8 and a fixed rod 9, each rod member is connected by a hinge shaft.

[0007] The device for separating rainwater and sewage in farmland, the first crank rod 2, the second crank rod 5, the second auxiliary connecting rod 8 and the fixed rod 9 form a first four-bar linkage mechanism; the first crank rod 2, the second crank rod 5, the input rod 6 and the first auxiliary connecting rod 7 form a second four-bar linkage mechanism.

[0008] The device for separating rainwater and sewage in farmland, the double four-bar linkage mechanism further comprises a power spring rod 3, the power spring rod 3 is connected between the first four-bar linkage mechanism and the second four-bar linkage mechanism, and plays a role of storing and releasing elastic force.

[0009] The first crank rod 2 and the second crank rod 5 are crank structures, and the first crank rod 2 and the second crank rod 5 are shared by two sets of four-bar linkages.

[0010] The first crank rod 2 is a crank rod composed of two straight rods with an angle of 120°-135°, and the first crank rod 2 is provided with a first hinge hole 21 and a second hinge hole 22 at one end of the two straight rods, and a third hinge hole 23 is arranged at an upper position of the connection point of the two straight rods, and the three hinge holes are not collinear, and the straight line where the first hinge hole 21 and the second hinge hole 22 are located and the straight line where the second hinge hole 22 and the third hinge hole 23 are located form an angle of 120°-135°.

[0011] The second crank rod 5 is provided with two hinge holes on each of the two straight rods, and a total of four hinge holes are provided: a fourth hinge hole 51, a fifth hinge hole 52, a sixth hinge hole 53, and a seventh hinge hole 54, and the fourth hinge hole 51 and the fifth hinge hole 52 are not collinear with the other two hinge holes (the sixth hinge hole 53 and the seventh hinge hole 54), and the straight line where the fourth hinge hole 51 and the fifth hinge hole 52 are located and the straight line where the sixth hinge hole 53 and the seventh hinge hole 54 are located form an angle of 20°-30°.

[0012] The input rod 6, the first auxiliary connecting rod 7, the second auxiliary connecting rod 8, and the fixed rod 9 are all straight rods, and two hinge holes are arranged on each of them, the input rod 6 is fixed on the baffle, and the fixed rod 9 is fixed below the middle partition plate between the upper water distribution outlet and the lower water distribution outlet.

[0013] The two hinge holes at the two ends of the fixed rod 9 are respectively hinged with the first hinge hole 21 and one hinge hole of the second auxiliary connecting rod 8, the fourth hinge hole 51 is hinged with one hinge hole of the input rod 6, the fifth hinge hole 52 is hinged with the other hinge hole of the second auxiliary connecting rod 8, the sixth hinge hole 53 is hinged with the second hinge hole 22, the seventh hinge hole 54 is hinged with one end of the power spring rod 3, one hinge hole of the first auxiliary connecting rod 7 is hinged with the other hinge hole of the input rod 6, and the other hinge hole of the first auxiliary connecting rod 7 is hinged with the other end of the power spring rod 3 and the third hinge hole 23.

[0014] The fixed rod 9 serves as the frame of the double four-bar linkage mechanism, the frame and the input rod 6 can rotate in opposite directions at the same angular velocity, and the rotation angle is limited within 100 degrees.

[0015] The rain and sewage shunting device has the advantages that the shunting device can be arranged at the end of the drainage ditch flexibly, the requirement of power or hydraulic drive is eliminated, and the rain and sewage can be automatically shunted according to the pollutant concentration in the farmland drainage.

[0016] The rain and sewage shunting device is convenient, fast, simple, maintenance-free, easy to arrange, suitable for rain and sewage shunting of farmland drainage, and used for purifying high-pollution drainage of farmland. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a rain and sewage shunting device design and waterway upper and lower water distribution structure schematic diagram;

[0018] Figure 2 It is a double four-bar linkage mechanism schematic diagram of the baffle water control self-closing function (the position of the baffle working state);

[0019] Figure 3 It is a double four-bar linkage mechanism schematic diagram of the baffle water control self-closing function (the position of the baffle full closing state);

[0020] Figure 4 It is a double four-bar linkage mechanism schematic diagram of the baffle water control self-closing function (the position of the baffle full opening state);

[0021] Figure 5 It is a double four-bar linkage mechanism detailed schematic diagram of the baffle water control self-closing function;

[0022] Figure 6 It is an assembly schematic diagram of the double four-bar linkage mechanism of the baffle water control self-closing function; (the dashed line shows the corresponding assembly hole of each connecting rod, and the hinge shaft is penetrated in the hole);

[0023] Figure 7 It is a first crank rod structure schematic diagram;

[0024] Figure 8 It is a second crank rod structure schematic diagram;

[0025] 1 intermediate partition, 2 first crank rod, 3 booster spring rod, 4 baffle, 5 second crank rod, 6 input rod, 7 first auxiliary connecting rod, 8 second auxiliary connecting rod, 9 fixed rod; 21 first hinge hole, 22 second hinge hole, 23 third hinge hole; 51 fourth hinge hole, 52 fifth hinge hole, 53 sixth hinge hole, 54 seventh hinge hole; DETAILED DESCRIPTION

[0026] The utility model will be described in detail in combination with specific embodiments.

[0027] REFERENCE Figures 1-2The farmland rainwater and sewage separation device is installed at the outlet of the cross slope interception ditch and the boundary drainage ditch. The farmland rainwater and sewage separation device includes an upper water outlet and a lower water outlet structure, which can be made of stainless steel and set at the end of the drainage ditch. Its cross-sectional shape and size can be flexibly set according to the needs of the site. The upper water outlet and the lower water outlet are separated by a middle partition 1. The double four-bar linkage mechanism is fixed below the middle partition 1 and above the rear of the baffle 4. The double four-bar linkage mechanism can close the lower water outlet under the action of water flow impact force. At this time, the water flows into the upper water outlet and flows into the subsequent pipe through the upper water outlet.

[0028] like Figure 5 The double four-bar linkage shown comprises six links: a first crank 2, a booster spring 3, a second crank 5, an input rod 6, a first auxiliary link 7, a second auxiliary link 8, and a fixed link 9. All links are connected by hinge pins (see reference). Figure 6 The first crank lever 2, the second crank lever 5, the second auxiliary connecting rod 8, and the fixed rod 9 form the first four-bar linkage; the first crank lever 2, the second crank lever 5, the input rod 6, and the first auxiliary connecting rod 7 form the second four-bar linkage; the double four-bar linkage also includes a booster spring rod 3, which connects the first and second four-bar linkages and serves to store and release spring force. The first crank lever 2 and the second crank lever 5 are crank structures, shared by two sets of four-bar linkages. The fixed rod 9 is fixed below the intermediate partition between the upper and lower water inlets. The input rod 6 moves under the action of external force and water force, driving the movement of other rods through its movement.

[0029] refer to Figure 6 The first crank lever 2 is a crank lever composed of two straight rods at an angle of 120°-135°. A first hinge hole 21 and a second hinge hole 22 are provided at one end of each straight rod. A third hinge hole 23 is provided near the connection point of the two straight rods. The three hinge holes are not collinear, and the straight line containing the first hinge hole 21 and the second hinge hole 22 forms an angle of 120°-135° with the straight line containing the second hinge hole 22 and the third hinge hole 23. The second crank lever 5... Two hinge holes are provided on each of the two straight rods, for a total of four hinge holes: fourth hinge hole 51, fifth hinge hole 52, sixth hinge hole 53, and seventh hinge hole 54. The fourth hinge hole 51 and the fifth hinge hole 52 are not collinear with the other two hinge holes (sixth hinge hole 53 and seventh hinge hole 54). The straight line containing the fourth hinge hole 51 and the fifth hinge hole 52 forms an angle of 20°-30° with the straight line containing the sixth hinge hole 53 and the seventh hinge hole 54.

[0030] The input rod 6, the first auxiliary connecting rod 7, the second auxiliary connecting rod 8, and the fixed rod 9 are all straight rods, each with two hinge holes. The input rod 6 is fixed to the baffle, and the fixed rod 9 is fixed to the underside of the intermediate partition between the upper and lower water outlets.

[0031] refer to Figures 6-8 The two hinge holes at both ends of the fixed rod 9 are respectively hinged to the first hinge hole 21 and one hinge hole of the second auxiliary link 8. The fourth hinge hole 51 is hinged to one hinge hole of the input rod 6. The fifth hinge hole 52 is hinged to the other hinge hole of the second auxiliary link 8. The sixth hinge hole 53 is hinged to the second hinge hole 22. The seventh hinge hole 54 is hinged to one end of the assist spring rod 3. One hinge hole of the first auxiliary link 7 is hinged to the other hinge hole of the input rod 6. The other hinge hole of the first auxiliary link 7 is hinged to the other end of the assist spring rod 3 and the third hinge hole 23.

[0032] In this double four-bar linkage, the fixed link 9 serves as the frame of the double four-bar linkage. The frame and the input link 6 can rotate in opposite directions at the same angular velocity, and the rotation angle is limited to within 100 degrees. When the baffle 4 is in the working position ( Figure 2 As shown), the spring of the assist spring rod 3 is in a compressed state, i.e., an unstable, unexcited state. When the water flow impacts the baffle 4, since the frame is fixed, the input rod 6 is excited, the spring of the assist spring rod 3 releases energy, the input rod 6 rotates downward, and the baffle 4 closes the lower water outlet; while when the baffle is fully open ( Figure 4 The position and the baffle are fully closed. Figure 3 When the spring is in the released and stable state, the baffle needs to be manually pushed back to the working position.

[0033] The farmland rainwater and sewage separation device of this utility model is set at the end of the water channel. When the nitrogen and phosphorus concentration in the drainage is low, the water flow is large, the input rod 6 is activated, the spring of the assist spring rod 3 releases energy, the input rod 6 rotates downward, and the baffle 4 closes the lower water outlet. Figure 3 When the water flow is small, the input rod 6 will not be activated, and the water will flow into the lower water outlet, flowing into the next stage of rainwater and sewage treatment device, such as a vegetation retention pond.

[0034] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A device for separating rain and pollutants in a farmland, characterized in that, The application relates to a water distribution device, which comprises an upper water distribution structure and a lower water distribution structure, the upper water distribution structure and the lower water distribution structure are separated by a middle partition plate (1), a double four-bar linkage mechanism is fixed below the middle partition plate (1) and above the back of a baffle (4), the double four-bar linkage mechanism is closed under the action of a larger water flow impact force, water flows into the upper water distribution structure and then flows into a subsequent pipeline.

2. The device for separating rain and pollutants in a farmland according to claim 1, characterized in that, The double four-bar linkage mechanism comprises six rods, i.e. a first crank rod (2), a power spring rod (3), a second crank rod (5), an input rod (6), a first auxiliary connecting rod (7), a second auxiliary connecting rod (8) and a fixed rod (9), and each rod is connected through a hinge shaft.

3. The device for separating rain and pollutants in a farmland according to claim 2, characterized in that, The first crank rod (2), the second crank rod (5), the second auxiliary connecting rod (8) and the fixed rod (9) form a first four-bar linkage mechanism; the first crank rod (2), the second crank rod (5), the input rod (6) and the first auxiliary connecting rod (7) form a second four-bar linkage mechanism.

4. The device for separating rain and pollutants in a farmland according to claim 3, characterized in that, The double four-bar linkage mechanism further comprises the power spring rod (3), the power spring rod (3) is connected between the first four-bar linkage mechanism and the second four-bar linkage mechanism, and functions as force storage and release.

5. The device for separating rain and pollutants in a farmland according to claim 3, characterized in that, The first crank rod (2) and the second crank rod (5) are crank structures, and the first crank rod (2) and the second crank rod (5) are shared by the two sets of four-bar linkage mechanisms.

6. The device for separating rain and pollutants in a farmland according to claim 3, characterized in that, The first crank rod (2) is a crank rod composed of two straight rods with an angle of 120-135 DEG, first hinge holes (21) and second hinge holes (22) are arranged at one end of the two straight rods, a third hinge hole (23) is arranged at an upper position of a connecting point of the two straight rods, the three hinge holes are not collinear, and the straight line where the first hinge hole (21) and the second hinge hole (22) are located forms an angle of 120-135 DEG with the straight line where the second hinge hole (22) and the third hinge hole (23) are located.

7. The device for separating rain and pollutants in a farmland according to claim 3, characterized in that, The second crank rod (5) is provided with two hinge holes on each of the two straight rods, and a total of four hinge holes are arranged, i.e. a fourth hinge hole (51), a fifth hinge hole (52), a sixth hinge hole (53) and a seventh hinge hole (54), the fourth hinge hole (51) and the fifth hinge hole (52) are not collinear with the sixth hinge hole (53) and the seventh hinge hole (54), and the straight line where the fourth hinge hole (51) and the fifth hinge hole (52) are located forms an angle of 20-30 DEG with the straight line where the sixth hinge hole (53) and the seventh hinge hole (54) are located.

8. The device for separating rain and pollutants in a farmland according to claim 3, characterized in that, The input rod (6), the first auxiliary connecting rod (7), the second auxiliary connecting rod (8) and the fixed rod (9) are straight rods, each of which is provided with two hinge holes, the input rod (6) is fixed on the baffle, and the fixed rod (9) is fixed below the middle partition plate between the upper water distribution structure and the lower water distribution structure.

9. The device for separating rain and pollutants in a farmland according to claim 3, characterized in that, The two hinge holes at the ends of the fixed rod (9) are respectively hinged with the first hinge hole (21) and one of the hinge holes of the second auxiliary connecting rod (8), the fourth hinge hole (51) is hinged with one of the hinge holes of the input rod (6), the fifth hinge hole (52) is hinged with the other hinge hole of the second auxiliary connecting rod (8), the sixth hinge hole (53) is hinged with the second hinge hole (22), the seventh hinge hole (54) is hinged with one end of the power spring rod (3), one of the hinge holes of the first auxiliary connecting rod (7) is hinged with the other hinge hole of the input rod (6), and the other hinge hole of the first auxiliary connecting rod (7) is hinged with the other end of the power spring rod (3) and the third hinge hole (23).

10. The device for separating rain and pollutants in a farmland according to claim 3, characterized in that, The fixed rod (9) serves as the frame of the double four-connecting rod mechanism, the frame and the input rod (6) can rotate reversely at the same angular velocity, and the rotation angle is limited within 100°.

Images