A device for the removal of sand from recirculated irrigation water

Abstract

The application discloses a circulating sand removing device for irrigation water, which comprises a cyclone sand remover, a water inlet pipe and a water outlet pipe arranged on the cyclone sand remover, and a side wall of the cyclone sand remover is arranged in two layers, an inner layer side wall surrounds a cyclone cavity of the cyclone sand remover, a sand sink cavity is formed between the inner layer side wall and an outer layer side wall, a plurality of through holes are formed in the inner layer side wall and communicated with the cyclone cavity and the sand sink cavity, an elastic baffle capable of covering the through holes is arranged on the outer side of the inner layer side wall, and the elastic baffle and the through holes are arranged in one-to-one correspondence; a water outlet is formed in the outer layer side wall of the cyclone sand remover and is connected to the water inlet pipe through a reflux pipe, so that the circulating sand removing is carried out on the sand-containing water flow entering the sand sink cavity, and the sand particles in the irrigation water are separated in circulation, thereby guaranteeing the normal use of the sprinkling irrigation device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of farmland irrigation, in particular to a circulating sand removing device for irrigation water. BACKGROUND

[0002] The spraying irrigation process has high requirements for the cleanliness of irrigation water, and the impurities in the water need to be removed. At present, the water used for spraying irrigation is often well water or river water, and a filter screen is generally provided on the water suction pipe when the irrigation water is pumped. Since the aperture of the filter screen is relatively large, only relatively large-volume leaves, weeds, sand and other impurities in the water can be filtered out during pumping, and some small-volume sand particles are not easy to be filtered out. If the aperture of the filter screen is reduced, the efficiency of pumping irrigation water will be reduced.

[0003] The unfiltered sand particles accumulate in the water pipe, which not only affects the flow of irrigation water in the water pipe, but also causes blockage or damage to the nozzle for spraying irrigation water. SUMMARY

[0004] The present application aims to provide a circulating sand removing device for irrigation water, so as to separate the sand particles in the irrigation water in a circulating manner, thereby ensuring the normal use of the spraying irrigation device.

[0005] In order to solve the above technical problems, the present application adopts the following specific scheme: a circulating sand removing device for irrigation water, comprising a cyclone sand remover, a water inlet pipe and a water outlet pipe arranged on the cyclone sand remover, the side wall of the cyclone sand remover is provided in two layers, the inner layer side wall surrounds a cyclone cavity of the cyclone sand remover, a sand settling cavity is formed between the inner layer side wall and the outer layer side wall, a plurality of through holes are formed in the inner layer side wall and communicate with the cyclone cavity and the sand settling cavity, an elastic baffle capable of covering the through holes is arranged on the outer side of the inner layer side wall, and the elastic baffle and the through holes are arranged one by one; a water outlet is formed in the outer layer side wall of the cyclone sand remover, and the water outlet is connected to the water inlet pipe through a reflux pipe to circulate and remove the sand in the sand-containing water flow entering the sand settling cavity.

[0006] As a further optimization of the above technical solution, a helical flow guide strip is arranged on the inner wall of the inner layer side wall, and the through holes are arranged between adjacent flow guide strips and are uniformly distributed along the direction of the flow guide strips.

[0007] As a further optimization of the above technical solution, the cyclone cavity of the cyclone sand remover comprises a cylindrical section and a conical section, and the flow guide strips and the through holes are arranged in the cylindrical section.

[0008] As a further optimization of the above technical solution, a stirring assembly is rotatably connected to the top of the cyclone sand remover, the stirring assembly comprises a stirring cylinder and a driving motor for driving the stirring cylinder to rotate, the driving motor is arranged at the top of the cyclone sand remover, the lower part of the stirring cylinder is inserted into the cyclone cavity of the cyclone sand remover, a plurality of stirring rods are circumferentially arranged on the cylinder wall of the stirring cylinder, the inside of the stirring cylinder is hollow to connect the water outlet pipe.

[0009] As a further optimization of the above technical solution, the top center of the cyclone desander is provided with a circular hole, the stirring cylinder is installed in the circular hole, a first rotating mechanism is installed between the outer wall of the stirring cylinder and the hole wall of the circular hole, the upper end of the stirring cylinder extends out of the circular hole, and the stirring cylinder is connected with the driving motor through a transmission assembly; the water outlet pipe is inserted into the stirring cylinder, and a second rotating mechanism is arranged between the water outlet pipe and the inner wall of the stirring cylinder.

[0010] As a further optimization of the above technical solution, the transmission assembly comprises a driving gear connected with the driving motor and a driven gear fixed on the outer wall of the stirring cylinder in a circumferential direction, and the driving gear and the driven gear are conical gears that mesh with each other.

[0011] As a further optimization of the above technical solution, the end of the stirring rod is provided with a stirring paddle, the stirring paddle is semicircular, and the arc edge of the paddle is inclined downward.

[0012] As a further optimization of the above technical solution, the elastic baffle is rectangular, and one of the vertical edges of the elastic baffle is fixed to one side of the corresponding through hole.

[0013] As a further optimization of the above technical solution, the bottom of the sand setting chamber and the cyclone chamber is provided with a sand discharge port.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. In the present application, the side wall of the cyclone desander is provided with two layers, a sand setting chamber is arranged between the two layers of side walls, a through hole is formed in the inner layer of side wall to communicate the sand setting chamber and the cyclone chamber, and an elastic baffle is arranged on the through hole to cover the through hole; in use, the sand-containing water flow enters the cyclone chamber of the cyclone desander from the water inlet under a certain pressure, due to the difference in density between sand and water, the same volume of sand has a larger mass than the same volume of water, so under the condition of the same volume and the same speed, the kinetic energy of sand is greater than that of water, the sand with greater kinetic energy in the sand-containing water flow pushes the elastic baffle to open the through hole and enter the sand setting chamber, so the water flow with a larger sand content enters the sand setting chamber and settles in the sand setting chamber; when the water flow and sand enter the sand setting chamber through the through hole, the water flow entering the sand setting chamber is slowed down by the blocking action of the elastic baffle, reducing the disturbance of the water flow to the sand particles, so that the sand particles are easily settled, the mud and sand not entering the sand setting chamber are separated in the cyclone chamber of the cyclone desander, the sand particles with large density fall along the inner layer of side wall under the action of their own gravity and are collected to the sand discharge port of the cyclone chamber, and are discharged through the sand discharge port; the water in the sand setting chamber is connected to the inlet pipe of the cyclone desander through the backflow pipe, and is again introduced into the cyclone desander through the water inlet pipe for recycling and sand removal, improving the sand removal effect.

[0016] 2. The stirring component inside the cyclone separator can increase the rotation speed of the irrigation water in the cyclone chamber, thus improving the sand removal effect. The spiral guide strip guides the irrigation water entering the cyclone chamber, causing the irrigation water to flow along the spiral direction of the spiral guide strip, which further increases the rotation speed of the irrigation water in the cyclone chamber. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the connection between the hydrocyclone desander and the agitator assembly in this invention;

[0019] Figure 3 This is a schematic diagram of the inner sidewall of the inner layer;

[0020] Figure 4 This is a schematic diagram of the outer side of the inner sidewall;

[0021] Reference numerals: 1. Inlet pipe, 2. Drive motor, 3. Outlet pipe, 4. Stirring drum, 5. Inner side wall, 6. Outer side wall, 7. Stirring rod, 8. Stirring blade, 9. Swirl chamber, 10. Sand settling chamber, 11. Sand discharge port, 12. Pressure pump, 13. Return pipe, 14. Elastic baffle, 15. Guide bar, 16. First rotating mechanism, 17. Second rotating mechanism, 18. Driven gear, 19. Driven gear, 20. Output shaft, 21. Vertical rod, 22. Fixing ring, 23. Through hole. Detailed Implementation

[0022] like Figure 1 As shown, the present invention is a circulating sand removal device for irrigation water, including a cyclone sand separator, an inlet pipe 1 and an outlet pipe 3 disposed on the cyclone sand separator. The sidewall of the cyclone sand separator is configured with two layers, the inner sidewall 5 forming the cyclone cavity 9 of the cyclone sand separator, and a sand settling cavity 10 is formed between the inner sidewall 5 and the outer sidewall 6.

[0023] The vortex chamber 9 includes a cylindrical section and a conical section. The conical section is located below the cylindrical section, and its large-diameter end is connected to the cylindrical section. The large-diameter end of the conical section has the same diameter as the cylindrical section. The small-diameter end of the conical section is provided with a sand discharge port 11 for discharging sand particles from the vortex chamber 9. A sand discharge port 11 for discharging sand particles from the sedimentation chamber 10 is also provided at the bottom of the sedimentation chamber 10. A water inlet for supplying water to the vortex desander is opened on the side wall of the cylindrical section of the vortex chamber 9. The water inlet is located in the upper part of the cylindrical section and is connected to the water inlet pipe 1. Sand-laden water, used for irrigation, enters the vortex chamber 9 tangentially through the water inlet to form a vortex.

[0024] like Figure 3 , Figure 4As shown, a plurality of through holes 23 are formed in the inner layer side wall 5, which communicate the rotational flow cavity 9 and the sand settling cavity 10. An elastic baffle 14 is arranged on the outer side of the inner layer side wall 5 and covers the through holes 23. The elastic baffle 14 and the through holes 23 are in one-to-one correspondence. The elastic baffle 14 and the through holes 23 are rectangular, and one vertical edge of the elastic baffle 14 is fixed to one side of the corresponding through hole 23. During use, the vertical edge of the elastic baffle 14 fixed to the inner layer side wall 5 is located upstream of the rotational flow. The elastic baffle 14 can be pushed away by the impact force of the sand-containing water flow to allow the sand-containing water flow to pass through, and the elastic baffle 14 restores to cover the through hole 23 when the impact force disappears or is smaller than the elastic force of the elastic baffle 14.

[0025] A spiral flow guide strip 15 is arranged on the inner side of the inner layer side wall 5. The flow guide strip 15 guides the sand-containing water entering the rotational flow cavity 9 to flow spirally along the flow guide strip 15, thereby enhancing the effect of rotational flow sand removal of the sand-containing water. The through holes 23 are arranged between adjacent flow guide strips 15 and uniformly distributed along the direction of the flow guide strip 15, thereby improving the efficiency of the spiral flow of the sand-containing water flow.

[0026] A water outlet is formed in the outer layer side wall 6 of the rotational flow sand remover and is connected to the water inlet pipe 1 through a reflux pipe 13 to circulate and remove sand from the water entering the sand settling cavity 10. The water outlet is arranged above 1 / 3 of the height of the outer layer side wall 6. In order to smoothly pass the water flow in the sand settling cavity 10 into the water inlet pipe 1, a booster pump 12 is arranged on the reflux pipe 13.

[0027] During use, the sand-containing water flow enters the rotational flow cavity 9 of the rotational flow sand remover from the water inlet at a certain pressure and in a tangential direction. Since the density of sand is different from that of water, the same volume of sand has a larger mass than the same volume of water. Therefore, under the condition of the same volume and the same speed, the kinetic energy of sand is greater than that of water. The sand with greater kinetic energy in the sand-containing water flow pushes the elastic baffle 14 to open the through hole 23 and enter the sand settling cavity 10, so that the water flow with a larger sand content enters the sand settling cavity 10 and settles in the sand settling cavity 10. When the water flow and sand enter the sand settling cavity 10 through the through hole 23, the water flow entering the sand settling cavity 10 is slowed down by the blocking action of the elastic baffle 14, which reduces the disturbance of the water flow to the sand particles, so that the sand particles are easily deposited. The mud and sand not entering the sand settling cavity 10 are separated in the rotational flow cavity 9 of the rotational flow sand remover. The sand particles with large density fall along the inner layer side wall 5 under the action of their own gravity and are collected to the sand discharge port 11 of the rotational flow cavity 9 and are discharged through the sand discharge port 11. The water in the sand settling cavity 10 is connected to the inlet pipe of the rotational flow sand remover through the reflux pipe 13 and is again passed into the rotational flow sand remover through the water inlet pipe 1 for circulation and sand removal, thereby improving the sand removal effect.

[0028] In order to further enhance the effect of the cyclone desanding, a stirring assembly is arranged on the top of the cyclone desander, which comprises a stirring cylinder 4 and a driving motor 2 for driving the stirring cylinder 4 to rotate. A circular hole is arranged at the center of the top of the cyclone desander, and the stirring cylinder 4 is arranged in the circular hole. The stirring cylinder 4 is a straight cylinder with an inner cavity, and the upper part of the stirring cylinder 4 extends out of the circular hole, and the lower part of the stirring cylinder 4 is inserted into the cyclone cavity 9 of the cyclone desander. As shown in Figure 2 the first rotating mechanism 16 is arranged between the outer wall of the stirring cylinder 4 and the hole wall of the circular hole, and the water outlet pipe 3 is inserted into the inner part of the stirring cylinder 4, and the second rotating mechanism 17 is arranged between the water outlet pipe 3 and the inner part of the stirring cylinder 4. The arrangement of the first rotating mechanism 16 and the second rotating mechanism 17 can avoid the interference of the stirring cylinder 4 with the water outlet pipe 3 and the wall of the cyclone desander when the stirring cylinder 4 rotates. The first rotating mechanism 16 and the second rotating mechanism 17 are both rotating bearings. In order to smoothly discharge the filtered water, the water outlet pipe 3 is provided with a water pump, and the water in the cyclone desander is pumped out by the water pump for irrigation.

[0029] As another embodiment of the first rotating mechanism 16 and the second rotating mechanism 17, the first rotating mechanism 16 and the second rotating mechanism 17 can also be arranged as rotating dynamic sealing structures. Because in the process of cyclone desanding, the water flow in the cyclone desander may overflow to the rotating bearing, which will affect the stirring work of the stirring cylinder 4 and the full use of water resources. The arrangement of the rotating dynamic sealing structure can avoid such influence. Due to the sealing effect of the rotating dynamic sealing structure, the separated water in the cyclone desander can also overflow through the water outlet pipe 3 for irrigation. The way of overflowing irrigation water through the water outlet pipe 3 can reduce the power of the water pump installed on the water outlet pipe 3 on the one hand, and avoid pumping out the unfiltered water from the cyclone desander by the water pump when pumping on the other hand.

[0030] The water outlet pipe 3 is fixed on the top of the cyclone desander through a support, and the part of the water outlet pipe 3 inserted into the stirring cylinder 4 and fixed on the cyclone desander is a hard pipe, which can facilitate the installation of the rotating dynamic sealing mechanism and the support. The support comprises a vertical rod 21 vertically fixed on the top of the cyclone desander, and a fixing ring 22 is arranged on the upper part of the vertical rod 21. The fixing ring 22 is sleeved on the water outlet pipe 3. The arrangement of the fixing ring 22 can avoid the shaking of the water outlet pipe 3 during water conveying, and also avoid the influence of the self-gravity of the water outlet pipe 3 on the working of the rotating dynamic sealing mechanism.

[0031] As shown in Figure 1 the stirring rod 7 and the stirring paddle 8 can further enhance the rate of cyclone and improve the desanding effect.

[0032] The driving motor 2 drives the stirring drum 4 to rotate through a transmission assembly, which comprises a driving gear 19 connected to the driving motor 2 and a driven gear 18 fixed to the outer wall of the stirring drum 4 in the circumferential direction. The driving gear 19 is fixed to the output shaft 20 of the driving motor 2, the inner diameter of the driven gear 18 is consistent with the outer diameter of the stirring drum 4, the driven gear 18 is sleeved outside the stirring drum 4 and fixed to the stirring drum 4, and the driving gear 19 and the driven gear 18 are conical gears that mesh with each other. In use, the driving motor 2 drives the driving gear 19 to rotate. Since the driving gear 19 and the driven gear 18 are both conical gears, the reversing during gear transmission can be realized. The stirring drum 4 is driven to rotate through the rotation of the driven gear 18, the sand-containing water in the cyclone chamber 9 is stirred, the cyclone rate is enhanced, the sand particles are filtered through the cyclone chamber 9 and the sand settling chamber 10, the water flow in the cyclone chamber 9 is reversed in the conical section, flows from the bottom to the top of the conical section into the stirring drum 4, and is discharged through the water outlet pipe 3. After a period of use, the sand is discharged from the sand discharge port 11 by opening the sand removal port at the lower part of the cyclone chamber 9 and the sand settling chamber 10.

Claims

1. A sand removal device for recycling irrigation water, comprising a cyclone sand removal device, a water inlet pipe (1) and a water outlet pipe (3) arranged on the cyclone sand removal device, characterized in that, The side wall of the cyclone sand remover is provided with two layers, the inner layer side wall (5) surrounds the cyclone cavity (9) of the cyclone sand remover, the inner layer side wall (5) and the outer layer side wall (6) form a sand setting cavity (10) therebetween, a plurality of through holes (23) are formed in the inner layer side wall (5) and communicate the cyclone cavity (9) and the sand setting cavity (10), the outer side of the inner layer side wall (5) is provided with elastic flaps (14) capable of covering the through holes (23), and the elastic flaps (14) and the through holes (23) are one-to-one arranged; the outer layer side wall (6) of the cyclone sand remover is provided with a water outlet, and the water outlet is connected to the water inlet pipe (1) through a backflow pipe (13) to circulate and remove sand from the sand-containing water flow entering the sand setting cavity (10); the inner wall of the inner layer side wall (5) is provided with spiral flow guide strips (15), and the through holes (23) are arranged between adjacent flow guide strips (15) and are uniformly distributed along the direction of the flow guide strips (15).

2. A sand removal device for recycling water for irrigation according to claim 1, characterized in that, The cyclone cavity (9) of the cyclone sand remover includes a cylindrical section and a conical section, and the flow guide strips (15) and the through holes (23) are arranged in the cylindrical section.

3. A sand removal device for recycling water for irrigation according to claim 1, characterized in that, The top of the cyclone sand remover is rotationally connected with a stirring assembly, the stirring assembly includes a stirring cylinder (4) and a driving motor (2) for driving the stirring cylinder (4) to rotate, the driving motor (2) is arranged at the top of the cyclone sand remover, the lower part of the stirring cylinder (4) is inserted into the cyclone cavity (9) of the cyclone sand remover, and a plurality of stirring rods (7) are circumferentially arranged on the cylinder wall of the stirring cylinder (4), and the inside of the stirring cylinder (4) is hollow to connect the water outlet pipe (3).

4. A sand removal device for recycling water for irrigation according to claim 3, characterized in that, A circular hole is arranged at the center of the top of the cyclone sand remover, the stirring cylinder (4) is installed in the circular hole, a first rotation mechanism (16) is arranged between the outer wall of the stirring cylinder (4) and the hole wall of the circular hole, the upper end of the stirring cylinder (4) extends out of the circular hole and is connected with the driving motor (2) through a transmission assembly; the water outlet pipe (3) is inserted into the stirring cylinder (4), and a second rotation mechanism (17) is arranged between the water outlet pipe (3) and the inner wall of the stirring cylinder (4).

5. A sand removal device for recycling water for irrigation according to claim 4, characterized in that, The transmission assembly includes a driving gear (19) connected to the driving motor (2) and a driven gear (18) fixed circumferentially on the outer wall of the stirring cylinder (4), and the driving gear (19) and the driven gear (18) are conical gears meshing with each other.

6. A sand removal device for recycling water for irrigation according to claim 3, characterized in that, The end of the stirring rod (7) is provided with a stirring paddle (8), and the stirring paddle (8) is semicircular and the arc edge of the blade is inclined downward.

7. A sand removal device for recycling water for irrigation according to claim 1, characterized in that, The elastic flap (14) is rectangular, and one of the vertical edges of the elastic flap (14) is fixed to one side of the corresponding through hole (23).

8. A sand removal device for recycling water for irrigation according to claim 1, characterized in that, The bottom of the sand setting cavity (10) and the cyclone cavity (9) are both provided with a sand discharge port (11).

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