WO2015172371A1

WO2015172371A1 - Single-screw pump and wind water-pumping system using single-screw pump

Info

Publication number: WO2015172371A1
Application number: PCT/CN2014/077636
Authority: WO
Inventors: 何嘉庆; 李成波
Original assignee: 广州华力新能源发展有限公司
Priority date: 2014-05-16
Filing date: 2014-05-16
Publication date: 2015-11-19
Also published as: CN105408631A; CN105408631B

Abstract

A screw pump and a wind water-pumping system using a wind motor to drive the screw pump to pump water, and aim to provide a single-screw pump with good sealing performance, high conveying efficiency, large water outlet pressure, small inner leakage and safety in use and a wind water-pumping system with high wind energy utilization ratio, simple structure, small size and low running cost. A single-screw pump and a wind water-pumping system. The single-screw pump comprises a screw and an inner lower sealing cylinder matching the screw. Round platform shafts and the inner lower sealing cylinder are sealed by using sintered graphitic oil seals; the outer ring material of each sintered graphitic oil seal is nitrile rubber; the inner ring material of each sintered graphite oil seal is sintered graphite; lower sealing lips are in rotatable sealing contact with the side surfaces of the round platform shafts; inner sides of the inner rings of the sintered graphitic oil seals are in rotatable sealing contact with the circumference surface of a main shaft.

Description

Single mast pump and wind pumping system using the single mast pump

3⁄4 field

The present invention relates to a variable displacement pump, and more particularly to a screw pump and a wind pumping system for pumping water from a wind turbine driven screw pump.

The screw pump is a kind of rotor pump and has the following advantages compared with the reciprocating pump:

(1) It has the smoothness of the operation of the centrifugal pump, no noise (only the sound of the motor is heard), the water outlet pressure is low without oil leakage, and no auxiliary equipment such as sewage recovery device and water cooling is needed;

(2) It has the characteristics of high efficiency of the displacement pump, and the displacement is constant when the pressure changes (fixed speed);

(3) Less leakage points, low maintenance, low maintenance costs, and short maintenance time.

However, the screw pump can only be used to transport high-viscosity oil due to its backward sealing technology. The efficiency of transporting thin oil or water is relatively low, the liquid easily leaks out of the sealing ring, and the outlet pressure of the water outlet cannot be too high. Otherwise, Increased internal leakage affects the safe use of the pump.

As a new type of wind pumping system that is inexpensive, reliable, and emits no greenhouse gases, the installed capacity of wind pumping systems is growing at a rate of more than 30% per year. Wind pumping is increasingly used worldwide and has formed a global industry with an annual output value of more than $5 billion. However, small wind pumping systems for independent water use in remote areas also need to overcome many technical difficulties in order to be widely used.

The wind pumping system converts wind energy into mechanical energy and drives a single screw pump to pump water. Broadly speaking, it is a single-screw pump that uses the sun as a heat source and uses the atmosphere as a working medium for thermal energy. Wind pumping uses natural energy, which is much better than diesel pumping and electric pumping.

Existing wind turbines are not directly used for pumping, and the cross-sections of the left and right flaps of existing wind turbines are concave and convex. After long-term practice, the left and right wing panels of this shape have lower utilization of wind energy.

Summary of the invention

The object of the present invention is to overcome the above disadvantages and to provide a single screw pump which has good sealing performance, high conveying efficiency, large outlet pressure, less internal leakage, and safe use. Another object of the present invention is to provide a wind pumping system that has high wind energy utilization, simple structure, small size, and low operating cost. A single screw pump of the present invention comprises a screw and an inner lower sealing cylinder, and the screw is fitted in the inner lower sealing cylinder. The inner lower sealing cylinder is provided with a water inlet and a water outlet. The upper end of the screw is provided with a circular table shaft and a main shaft integrally formed with the screw shaft, the rotary table shaft and the main shaft constitute a screw shaft, the outer diameter of the screw is greater than or equal to the diameter of the lower end of the circular table shaft, the diameter of the lower end of the circular table shaft is larger than the diameter of the upper end, and the diameter of the upper end of the circular table shaft is larger than Equal to the diameter of the main shaft, the upper end of the inner lower sealing cylinder is provided with an inner upper sealing cylinder which is fixedly fitted with the groove and the boss, the groove and the boss are circumferentially distributed, and the round table shaft and the inner lower sealing cylinder are sealed by a sintered graphite oil seal. The sintered graphite oil seal is composed of an outer ring and an inner ring embedded in the outer ring, the outer ring material is nitrile rubber, the inner ring material is sintered graphite, the inner side of the lower outer ring is a lower sealing lip, and the lower sealing lip and the round table shaft side are rotatable. The sealing contact, the upper sealing lip of the inner ring is in rotatably sealing contact with the circumferential surface of the main shaft, and there is a gap between the inner side of the upper sealing lip of the inner ring and the lower sealing lip of the outer ring, between the inner upper sealing cylinder and the sintered graphite oil seal A preload spring is fixed. The preload spring is placed on the main shaft.

The invention relates to a single screw pump, wherein a bottom cover of the inner lower sealing cylinder is sealed and fixed with a lower cover. The bottom of the screw is provided with a screw shaft protrusion, and a lower bearing is installed between the screw shaft protrusion and the lower cover.

A single screw pump of the present invention further includes a wind turbine, a transmission portion and a support portion. The wind turbine includes a lower plate, a left wing, a middle wing, a right wing, and an upper plate. The two ends of the upper plate and the lower plate are respectively fixedly connected with the left wing plate and the right wing plate, and the middle wing plate is fixed in the middle of the upper and lower plates, and the left wing plate and the right wing plate have the same shape structure, and the left wing plate and the right wing plate are in the middle wing. The axes of rotation of the plates are arranged symmetrically about the center. The cross-section of the left and right flaps is in the shape of a flat-convex airfoil, and the inner surfaces of the left and right flaps are planar. The angle between the vertical imaginary plane and the inner surface of the left wing plate through the two vertices of the cross section of the middle wing plate is 39° - 59°, and the middle wing plate includes the middle front plate and the middle rear plate, the middle front The cross section of the plate is arcuate, the cross section of the middle and rear plates is arcuate, and the structural shapes of the middle front plate and the middle rear plate are identical. The middle front plate and the middle rear plate are connected into a hollow frame with a cross section of a rugby ball. The inner wall of the plate is the inner hole wall. The inner hole wall is connected to the screw shaft through the transmission portion, and the rotation axis of the middle wing plate and the rotation axis of the input shaft are both vertical directions, and the water inlet of the single screw pump is connected with the water inlet pipe, and the water outlet of the single screw pump is connected. There is an outlet pipe, and the single screw pump and the wind turbine are fixed to the ground through the support portion.

A wind pumping system according to the present invention, wherein the outlet pipe of the single screw pump is also connected to the top of an overhead tank. The elevated water tank is fixed to the ground by an elevated frame, and the elevated water tank is located on the upper side of the single screw pump.

The invention relates to a wind pumping system, wherein the bottom of the elevated water tank is connected with a water spray device through a water pipe. The water spray device comprises a spray head holder and a spray head, and the spray head is fixed to the ground surface through the spray head holder. The water pipe is connected to the spray head, and the water spray device is plural. A wind pumping system according to the present invention, wherein the support portion comprises an outer seal cylinder and a single screw pump frame. The top of the outer sealing cylinder is fixed by the flange and the top of the inner upper sealing cylinder, the bearing is installed between the outer sealing cylinder and the inner hole wall, and the bottom flange is fixed at the bottom of the outer sealing cylinder. The bottom flange axis coincides with the outer seal cylinder axis, and the outer seal cylinder is fixedly connected with the top of the single screw pump frame through the bottom flange, the single screw pump frame is fixed to the ground surface, and the outer circumferential surface and the bottom flange of the outer seal cylinder are With ribs. The reinforcing ribs are evenly distributed around the axis of the outer sealing cylinder by eight. The transmission portion includes an upper cover, a middle cover, and an acceleration case. The acceleration box The input shaft is fixedly connected to the inner hole wall through the upper cover. The input shaft of the acceleration tank is fixedly coupled to the first gear in the acceleration tank. The first gear meshes with a second gear within the acceleration tank. The second gear and the third gear in the acceleration tank are fixed in the acceleration case housing by a transmission shaft. The third gear meshes with a fourth gear in the acceleration tank. The fourth gear axis coincides with the screw shaft axis, and the fourth gear is coaxially fixedly connected with the output shaft of the acceleration box, and the output shaft of the acceleration box is connected with the main shaft drive. The input/output ratio of the acceleration box is 1:25, and the acceleration box passes The accelerator tank support cylinder is fixed to the upper portion of the inner upper seal cylinder. The upper cover and the middle cover are fixed into a hollow box by a sleeve. The acceleration box is located in the hollow box body, the middle cover is located on the upper side of the top flange of the inner upper sealing tube, and the middle part of the middle cover is provided with a through hole, and the through hole is used for the acceleration box support tube to pass through the middle cover, the middle cover and the inner hole The wall is fixedly connected, and the middle cover is mounted on the accelerating box support cylinder through a bearing.

A wind pumping system according to the present invention, wherein the angle Za between the vertical imaginary plane passing through the two vertex connections of the cross section of the middle wing and the inner surface of the left wing is 49°.

A wind pumping system according to the present invention, wherein the length L1 between the two apexes of the cross section of the middle flap is 1/3 of the distance L2 between the front end of the left flap and the front end of the right flap.

A wind pumping system according to the present invention, wherein the long curved side of the cross section of the left wing is an arc. The center of the arc is located at the axis of rotation of the inner bore wall.

The single screw pump of the present invention is different from the prior art in that a single screw pump of the present invention is sealed by a sintered graphite oil seal, and the outer ring of the sintered graphite oil seal is a nitrile rubber, and the nitrile rubber has excellent wear resistance and sealing. To achieve the first re-seal of the sintered graphite oil seal and the screw shaft. The inner ring of the sintered graphite oil seal is a sintered graphite material, and the sintered graphite material can have a low surface roughness and a good hardness. Therefore, the inner ring of the sintered graphite oil seal is in contact with the rotatable seal of the screw shaft, and functions as a second re-seal and as a guide. The pre-tightening spring and the sintered graphite oil seal are clamped together by the inner upper sealing cylinder and the inner lower sealing cylinder, and the pre-tightening spring can press the sintered graphite oil seal from top to bottom to increase the pre-tightening force of the sintered graphite oil seal, thereby increasing the single screw pump The pressure at the outlet reaches the effect of increasing the lift of the single screw pump. And the portion where the inner lower sealing cylinder and the inner upper sealing cylinder are in contact with each other adopts a trapezoidal groove and a ring protrusion which are matched with the concave-convex shape, and is fixed by bolts. This increases the degree of sealing of the inner and lower inner seal cylinders and achieves a third re-seal of the single screw pump. Sintered graphite oil There is a gap between the sealing lip and the lower sealing lip to ensure that the lower sealing lip has sufficient elastic deformation space to make the sintered graphite oil seal more sealing.

The utility model relates to a single screw pump, wherein the bottom of the screw shaft is fixed by the lower bearing and the lower cover, that is, the bottom of the screw is fixed by the lower bearing and the lower cover, and the lower cover is fixed to the bottom of the inner lower sealing cylinder, which can assist the output shaft of the acceleration box to the screw. The shaft is fixed to form the top and bottom of the screw shaft and fixed at the same time, which increases the stability of the screw shaft when rotating.

The wind pumping system of the present invention is different from the prior art in that the wind pumping system of the present invention can make the left wing panel by changing the shape of the cross section of the left and right flaps to a flat convex airfoil and matching the angle of the arrangement. When the air turbulence generated by the inner surface flows from the inner surface near the large end to the inner end near the small end, the turbulent flow quickly detaches from the inner surface, causing air turbulence A low pressure zone is formed between the inner surface and the inner surface, wherein the inner surface is at the lowest pressure near the large end portion. As the air turbulence diverges, airflow near the small end of the left and right wing plates will flow from the inner surface near the small end to the lower air pressure inner surface near the large end, creating additional aerodynamic forces to propel the left and right wing panels. The wind pumping system of the present invention is capable of pumping water using wind energy and making more efficient use of wind energy. And wind energy drives a single screw pump for pumping, which can greatly save operating costs.

The invention relates to a wind pumping system, wherein the water pumped out by the single screw pump is stored by an overhead water tank, which is convenient to use when needed.

The present invention relates to a wind pumping system in which an elevated water tank and a water spray device are connected by a water pipe to irrigate farmland when needed.

The invention relates to a single screw pump, wherein the support portion fixes the single screw pump and the wind turbine on the ground surface, and the reinforcing rib can better fix the outer sealing cylinder and the single screw pump frame, thereby increasing the strength and the strength of a single screw pump of the utility model. rigidity. The single-screw pump is connected to the spindle shaft of the screw shaft through the output shaft of the accelerating box, which can accelerate the rotation speed of the screw shaft and increase the pumping speed of the single-screw pump. Moreover, the input and output shafts of the accelerating box are coaxial, which can reduce the space occupied by the single screw pump.

The invention relates to a wind pumping system, wherein an angle between a vertical imaginary plane made by connecting two vertices of a cross section of a middle wing plate and an inner surface of a left wing panel is 49°, which can maximize the wind pumping system of the invention. The circumferential force, and minimizes the wind resistance of a wind pumping system of the present invention, which is the best angle for many years of practical verification.

The invention relates to a wind pumping system, wherein the length L1 between the two apexes of the cross section of the middle wing plate is 1/3 of the distance L2 between the front end of the left wing panel and the front end of the right flap, which ensures the size of the above-mentioned large windward opening and small windward opening. The gap makes the circumferential force of the wind turbine larger, and minimizes the problem that the middle wing of the middle wing is too large when rotating.

The invention relates to a wind pumping system, wherein a long curved edge of a cross section of a left wing plate is an arc, a center of a long curved edge is located at a center of a middle wing plate, and a left wing plate and a right wing plate have the same structure, so that a left wing plate and a right wing plate The wind resistance is greatly reduced during the rotation.

The single screw pump of the present invention and the wind pumping system using the single screw pump will be further described below with reference to the accompanying drawings.

DRAWINGS

Figure 1 is a front elevational view of a wind pumping system of the present invention using a single screw pump;

Figure 2 is a front elevational view of the single screw pump of Figure 1;

Figure 3 is a partial enlarged view of A in Figure 2;

Figure 4 is a partial enlarged view of B in Figure 2;

Figure 5 is a partial enlarged view of a portion C in Figure 2;

Figure 6 is a plan view of the wind turbine of Figure 1; Figure 7 is a front elevational view of the wind turbine of Figure 1;

Figure 8 is an isometric view of the wind turbine of Figure 1;

Figure 9 is a diagram showing the length of the line segment in Figure 6;

Figure 10 is a schematic view of the water spray device of Figure 1. detailed description

As shown in FIG. 1 to FIG. 10, referring to FIG. 1, the wind pumping system of the present invention using a single screw pump includes a single screw pump 2, a transmission portion (see FIG. 3), a support portion (see FIG. 2), a wind turbine 3, The elevated water tank 4 and the water spray device 5. The wind turbine 3 drives the transmission portion with wind energy, and the transmission unit drives the single screw pump 2 to rotate after increasing the output speed. The single screw pump 2 draws the groundwater 01 into the overhead water tank 4, and the overhead water tank 4 and the water spray device 5 are connected by a water pipe. The wind pumping system is fixed to the surface 1 by means of a support.

As shown in Figs. 2 and 4, the single screw pump 2 includes a screw shaft 20, an inner seal cylinder composed of an inner upper seal cylinder 221 and an inner lower seal cylinder 222, and a sintered graphite oil seal 202.

As shown in FIG. 4, the lower end surface of the inner upper sealing cylinder 221 is provided with an annular trapezoidal groove 2211, and the upper end surface of the inner lower sealing cylinder 222 is provided with a circular ring projection 2221 having a trapezoidal axial section. The trapezoidal recess 2211 is fitted with the concavo-convex shape of the annular projection 2221, and is reinforced together by circumferentially evenly distributed bolts, and the screw shaft 20 is fitted in the inner sealing cylinder.

As shown in FIG. 2 and FIG. 4, the screw shaft 20 is integrally formed by the main shaft 207, the circular table shaft 208, and the screw 209 from top to bottom. The diameter of the main shaft 207 is equal to or smaller than the diameter of the upper end of the circular table shaft 208, and the diameter of the upper end of the circular table shaft 208. The diameter of the lower end of the truncated shaft 208 is less than or equal to the outer diameter of the screw 209. The screw 209 is disposed in the inner lower sealing cylinder 222. The bottom inner sealing cylinder 222 is sealed and fixed with a lower cover 223, and the inner lower sealing cylinder 222 is disposed. There are a water inlet 291 and a water outlet 292.

As shown in Fig. 2, the water inlet pipe 91 passing through the support portion is connected to the water inlet 291 of the single screw pump 2, the water outlet 292 of the single screw pump 2 is connected to the water outlet pipe 92, and the water inlet 291 of the single screw pump 2 is passed through the water inlet pipe. 91 The groundwater 01 is sucked, and a switch device is provided between the water inlet 291 and the water inlet pipe 91, and the switch device is used to open and close the wind pumping system. The water outlet 292 of the single screw pump 2 discharges the inhaled groundwater 01 through the outlet pipe 92.

As shown in Fig. 5, a screw shaft projection 200 is provided at the bottom of the screw 209. A lower bearing 204 is mounted between the screw shaft projection 200 and the lower cover 223.

As shown in FIG. 4, the upper portion of the inner lower seal cylinder 222 and the turntable shaft 208 are sealed by a sintered graphite oil seal 202. The sintered graphite oil seal 202 is composed of an outer ring and an inner ring embedded in the outer ring. The outer ring material is nitrile rubber, and the inner ring material is sintered graphite. The inner side of the lower portion of the outer ring is the lower sealing lip 2021. The lower sealing lip 2021 is in rotatably sealing contact with the side of the truncated cone shaft 208, and the inner side of the inner ring is an upper sealing lip 2022. The upper sealing lip 2022 is in rotatably sealing contact with the circumferential surface of the main shaft 207, and is sealed on the upper surface. There is a gap between the inner end of the lip 2022 and the lower sealing lip 2021 of the outer ring.

As shown in Fig. 4, a preload spring 201 made of stainless steel is fitted over the main shaft 207 of the screw shaft 20, and a preload spring 201 is fixed between the inner upper seal cylinder 221 and the sintered graphite oil seal 202.

As shown in Figs. 6 to 8, the wind turbine 3 includes a lower plate 34, a left wing plate 32, a middle wing plate 31, a right wing plate 33, and an upper plate 35. Both ends of the upper plate 35 and the lower plate 34 are fixedly coupled to the left and right flaps 32, 33, respectively, and the middle flap 31 is fixed to the middle of the upper and lower plates 35, 34.

As shown in FIG. 6, the middle wing panel 31 includes a middle front panel 311 and a middle rear panel 312. The middle front panel 311 has an arcuate cross section, and the middle rear panel 312 has an arcuate cross section, and the middle front panel 311 and the middle rear panel 312. The structural shapes are identical, and the middle front plate 311 and the middle rear plate 312 are connected into a hollow shell having a rugby-shaped cross section, and the inner wall of the middle flap 31 is an inner hole wall 310. A through hole is provided in the middle of the lower plate 34. The through hole has the same inner diameter as the inner hole wall 310, and the left and right flaps 32 and 33 are identical in shape, and the left and right flaps 32 and 33 are symmetrically arranged centering on the rotation axis of the middle flap 31. The cross-section of the left and right flaps 32, 33 is shaped as a flat-convex airfoil, and the inner surfaces of the left and right flaps 32, 33 are planar.

As shown in Fig. 6, the angle Za between the vertical imaginary plane passing through the two vertex connections of the cross section of the middle wing plate 31 and the inner surface of the left wing 32 is 39° to 59°, preferably 49°.

In order to follow the reasonable control variable method, the wind turbine of the background wind turbine with the middle wing plate height of 2.3 meters and the left and right wing plates with the closest distance of 3.4 meters is made of aluminum alloy material, and the wind of the 39 ° new technical scheme is adopted. A turbine, a wind turbine with a new technical solution of 59 °, and a wind turbine with a new technical solution of 49° are placed on the single screw pump of the present invention. The volume of the screw of the single screw pump is 56 ml/turn, and the number of turns of the screw is 10 turns. . The pumping efficiency test with a head of 20 m was carried out under the same wind speed, temperature, humidity and air pressure. The obtained power generation power data is an average value after ten measurements.

As shown in FIG. 9, the length L1 between the two apexes of the cross section of the middle wing plate 31 is 1/3 of the distance L2 between the front end of the left wing plate 32 and the front end of the right wing plate 33. As shown in FIG. 6, the long curved side 321 of the cross section of the left wing 32 is an arc. The center of the arc is located at the axis of the inner bore wall 310.

As shown in Figs. 2 and 3, the transmission portion includes an upper cover 231, a middle cover 232, and an acceleration case 21. The upper cover 231 is fixedly connected to the middle of the inner hole wall 310, and the upper cover 231 and the input shaft 210 of the acceleration case 21 are fixed by the first flange 212, and the input shaft 210 of the acceleration case 21 is fixedly connected with the first gear 213 in the acceleration case 21. . The first gear 213 meshes with the second gear 214 in the acceleration tank 21, and the second gear 214 and the third gear 215 in the acceleration tank 21 are both fixed in the acceleration case 211 by the transmission shaft 218. The third gear 215 meshes with the fourth gear 216 in the acceleration tank 21. The axis of the fourth gear 216 coincides with the axis of the screw shaft 20, and the fourth gear 216 is coaxially fixedly coupled to the output shaft 217 of the accelerator case 21. The output shaft 217 of the accelerating box 21 is fixedly coupled to the screw shaft 20, and the input/output ratio of the accelerating box 21 is 1:25.

As shown in Fig. 3, the lower end of the accelerating case casing 211 is fixedly coupled to the upper end of the accelerating case supporting cylinder 233, and the lower portion of the accelerating case supporting cylinder 233 and the upper portion of the inner upper sealing cylinder 221 are fixedly connected by bolts. The accelerating box support cylinder 233 is fitted over the main shaft 207 and is locked by a plurality of bolts evenly distributed along the top end of the inner upper sealing cylinder 221. The top end of the inner upper sealing cylinder 221 is fixedly connected to the support portion by a flange.

As shown in Fig. 3, the upper cover 231 and the middle cover 232 are fixed into a hollow case by a sleeve 230, the acceleration case 21 is located in the hollow case, and the middle cover 232 is located on the upper side of the top flange of the inner upper seal cylinder 221. The middle cover 232 is provided with a through hole in the middle thereof, the through hole is used to pass the accelerator case support cylinder 233 through the middle cover 232, the middle cover 232 is fixedly connected to the inner hole wall 310, and the middle cover 232 is mounted on the accelerator case support cylinder 233 through the bearing.

As shown in Fig. 2, the support portion includes an outer seal cylinder 24 and a single screw pump frame 11, and the outer seal cylinder 24 is fixed to the surface 1 by a single screw pump frame 11, and a bearing is mounted between the outer seal cylinder 24 and the inner bore wall 310.

As shown in Fig. 2, a bottom flange 241 is fixed to the bottom of the outer seal cylinder 24. The axis of the bottom flange 241 coincides with the axis of the outer seal cylinder 24, and the outer seal cylinder 24 is fixedly connected to the top of the single screw pump frame 11 through the bottom flange 241, and the outer circumferential surface of the outer seal cylinder 24 and the bottom flange 241 are reinforced. Rib 25. The ribs 25 are evenly distributed around the axis of the outer sealing cylinder 24 by eight.

As shown in Fig. 1, the water outlet 292 of the single screw pump 2 is connected to the top of the elevated water tank 4 through an outlet pipe 92. The elevated water tank 4 is fixed to the surface 1 by the overhead frame 12, and the overhead water tank 4 is located on the upper side of the single screw pump 2.

As shown in FIGS. 1 and 10, the bottom of the elevated water tank 4 is connected to the water spray device 5 through a water pipe. The water spray device 5 includes a head holder 52 and a head 51, and the head 51 is fixed to the surface 1 by the head holder 52. The water pipe is connected to the head 51, and a plurality of water spray devices 5 are provided. When the single screw pump 2 is installed, as shown in FIG. 1, first, the inner lower sealing cylinder 222 is fitted on the screw shaft 20, and the lower bearing 204 on the lower cover 223 is fitted on the screw shaft projection 200 to adjust the screw shaft. After the coaxiality with the inner lower sealing cylinder 222, the lower cover 223 is fixedly connected to the bottom of the inner lower sealing cylinder 222. Next, the sintered graphite oil seal 202 and the preload force spring 201 are sequentially fitted on the circumferential surface of the screw shaft 20. Finally, the inner upper seal cylinder 221 is fixed to the inner lower seal cylinder 222, and the inner upper seal cylinder 221 and the inner lower seal cylinder 222 are pressed to press the preload spring 201 and the sintered graphite oil seal 202. During the rotation of the wind turbine 3, as shown in FIG. 6, the cross-sections of the left and right flaps 32, 33 are in the shape of a flat-convex airfoil and match the angle of the arrangement, so that the air generated by the inner surface of the left flap 32 can be turbulent. When the inner surface is near the large end and flows toward the inner end near the small end, the turbulent flow quickly deviates from the inner surface, forming a low pressure region between the air turbulence and the inner surface, wherein the inner surface is at the lowest pressure near the large end portion. As the air turbulence diverges, the airflow near the small ends of the left and right wing plates 32, 33 will flow from the inner surface near the small end to the lower air pressure inner surface near the large end, forming additional aerodynamic forces to propel the left and right wings. The wind pumping system of the present invention makes full use of wind energy.

In use, the wind turbine 3 rotates the middle wing plate 31 by using the wind energy, the middle wing plate 31 drives the screw shaft 20 to rotate through the upper cover 231 and the acceleration box 21, and the single screw pump 2 pumps the groundwater 01 into the overhead water tank 4, and the elevated water tank 4 It is possible to store excess groundwater 01 withdrawn by the single screw pump 2 during peak wind hours, and to be used by people or in conjunction with the water spray device 5 for irrigation when needed.

The embodiments described above are only intended to describe the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and those skilled in the art can make the technical solutions of the present invention without departing from the precise design of the present invention. Variations and modifications are intended to fall within the scope of the invention as defined by the appended claims. Industrial applicability

The single screw pump of the present invention and the wind pumping system using the single screw pump have a significant impact on the field of pumping, particularly in the field of wind pumping. The single screw pump of the present invention and the wind pumping system using the single screw pump enable the wind pumping system to have a high utilization rate of wind energy and a good sealing performance of the single screw pump. Through specific experimental tests, the pumping efficiency of the single-screw pump of the present invention and the wind pumping system using the single-screw pump is significantly improved compared with the background art, and water can be supplied to more users. The single screw pump of the present invention and the wind pumping system using the single screw pump have strong industrial applicability and operability, and are of great significance for making full use of the natural wind energy and water resources.

Claims

1. A single screw pump comprising a screw (209) and an inner lower sealing cylinder (222), the screw (209) is fitted in an inner lower sealing cylinder (222), and the inner lower sealing cylinder (222) is provided with The nozzle (291) and the water outlet (292) are characterized in that: the screw (209) is provided with a round table shaft (208) and a main shaft (207), a screw (209) and a circular table shaft (208). The main shaft (207) constitutes the screw shaft (20), the outer diameter of the screw (209) is greater than or equal to the diameter of the lower end of the circular table shaft (208), the diameter of the lower end of the circular table shaft (208) is larger than the diameter of the upper end, and the diameter of the upper end of the circular table shaft (208) is greater than or equal to the main axis. (207) Diameter, the inner lower seal cylinder (222) is provided with an inner upper seal cylinder (221) which is fixedly fitted to the groove and the boss by a groove, a groove and a boss circumferentially uniform screw, and a round table shaft (208) and The inner lower sealing cylinder (222) is sealed by a sintered graphite oil seal (202).

The sintered graphite oil seal (202) is composed of an outer ring and an inner ring embedded in the outer ring, the outer ring material is nitrile rubber, the inner ring material is sintered graphite, the inner side of the lower ring is a lower sealing lip (2021), and the lower sealing lip (2021) In rotatably sealing contact with the side of the bowl shaft (208), the upper sealing lip (2022) of the inner ring is in rotatably sealing contact with the circumferential surface of the main shaft (207), and the inner side of the upper sealing lip (2022) of the inner ring is There is a gap between the lower sealing lip (2021) of the outer ring,

A preload spring (201) is fixed between the inner upper sealing cylinder (221) and the sintered graphite oil seal (202), and the preload spring (201) is fitted on the main shaft (207).

2. A single screw pump according to claim 1, wherein: the bottom end of the inner lower sealing cylinder (222) is sealed and fixed with a lower cover (223), and the bottom of the screw (209) is provided with a screw. A lower bearing (204) is mounted between the shaft projection (200) and the screw shaft projection (200) and the lower cover (223).

3. A wind pumping system using a single screw pump according to any one of claims 1 or 2, further comprising: a wind turbine (3), a transmission portion and a support portion, the wind turbine (3) comprising a lower plate (34), a left wing plate (32), a middle wing plate (31), a right wing plate (33), and an upper plate (35), and the two ends of the upper plate (35) and the lower plate (34) are respectively associated with the left wing plate ( 32) Fixed connection with the right wing plate (33), the middle wing plate (31) is fixed in the middle of the upper and lower plates (35, 34), and the left wing plate (32) and the right wing plate (33) are identical in shape and the left wing plate ( 32) and the right wing plate (33) are symmetrically arranged centering on the rotation axis of the middle wing plate (31), and the left wing plate (32) and the right wing plate (33) have a cross-sectional shape of a flat convex airfoil type, a left wing plate

(32) and the inner surface of the right wing plate (33) is a plane, and the angle between the vertical imaginary plane made by the two vertices of the cross section of the middle wing plate (31) and the inner surface of the left wing plate (32) is 39° — 59° , middle wing (31) including mid-front plate

(311) and the middle rear plate (312), the middle front plate (311) has an arcuate cross section, the middle rear plate (312) has an arcuate cross section, and the middle front plate (311) and the middle rear plate (312) have a structure. The shape is exactly the same, the middle front plate (311) and the middle rear plate (312) are connected into a hollow shell having a rugby-shaped cross section, and the inner wall of the middle wing plate (31) is an inner hole wall (310), and the inner hole wall (310) is drivingly connected to the screw shaft (20) through the transmission portion, the rotation axis of the middle wing plate (31) and the rotation axis of the input shaft (210) are both In the vertical direction, the water inlet (291) of the single screw pump (2) is connected to the inlet pipe (91), and the water outlet (292) of the single screw pump (2) is connected to the outlet pipe (92), single screw pump (2) The wind turbine (3) is fixed to the surface (1) by the support.

4. A wind pumping system according to claim 3, characterized in that: the outlet pipe (92) of the single screw pump (2) is also connected to the top of an overhead tank (4), the elevated tank ( 4) Fixed by the overhead (12) and the surface (1), the overhead tank (4) is located on the upper side of the single screw pump (2).

5. A wind pumping system according to claim 4, characterized in that: the bottom of the elevated water tank (4) is connected to a water spray device (5) via a water pipe, and the water spray device (5) comprises a spray head holder ( 52) and the nozzle (51), the nozzle (51) is fixed to the surface (1) through the nozzle holder (52), the water pipe is connected with the nozzle (51), and the water spraying device (5) is plural.

6. A wind pumping system according to claim 5, wherein said support portion comprises an outer sealing cylinder (24) and a single screw pump frame (11), said outer sealing cylinder (24) top passing method The top of the blue and inner upper sealing cylinder (221) is fixed, the outer sealing cylinder (24) and the inner hole wall (310) are mounted with bearings, and the outer sealing cylinder (24) is fixed with a bottom flange (241) at the bottom, the bottom The flange (241) axis coincides with the axis of the outer seal cylinder (24), and the outer seal cylinder (24) is fixedly connected to the top of the single screw pump frame (11) through the bottom flange (241), the single screw pump frame (11) and the surface (1) Fixed, a reinforcing rib (25) is disposed between the outer circumferential surface of the outer sealing cylinder (24) and the bottom flange (241), and the reinforcing rib (25) is evenly distributed around the axis of the outer sealing cylinder (24) 8,

The transmission portion includes an upper cover (231), a middle cover (232) and an acceleration case (21), and an input shaft (210) of the acceleration case (21) is fixed by an upper cover (231) and an inner hole wall (310) Connected, the input shaft (210) of the acceleration tank (21) is fixedly connected with the first gear (213) in the acceleration tank (21), the first gear (213) and the second in the acceleration tank (21) The gear (214) is engaged, and the second gear (214) and the third gear (215) in the acceleration tank (21) are fixed in the acceleration case (211) by a transmission shaft (218), the third gear (215) meshing with a fourth gear (216) in the acceleration tank (21), the axis of the fourth gear (216) coincides with the axis of the screw shaft (20), and the fourth gear (216) and the acceleration box (21) The output shaft (217) is coaxially fixedly connected. The output shaft (217) of the accelerating box (21) is connected to the main shaft (207). The input/output ratio of the accelerating box (21) is 1:25, and the accelerating box (21) is accelerated. The box support cylinder (233) is fixed to the upper portion of the inner upper seal cylinder (221), and the upper cover (231) and the middle cover (232) are fixed by the sleeve (230). The core box body, the acceleration box (21) is located in the hollow box body, the middle cover (232) is located on the upper side of the top flange of the inner upper seal cylinder (221), and the middle cover (232) is provided with a through hole in the middle, the through hole is used The acceleration box support cylinder (233) is passed through the middle cover (232), the middle cover (232) is fixedly connected to the inner hole wall (310), and the middle cover (232) is mounted on the acceleration case support cylinder (233) through the bearing.

7. A wind pumping system according to claim 6, characterized in that: between the vertical imaginary plane made by the two vertices of the cross section of the middle wing (31) and the inner surface of the left wing (32) The angle is 49°.

8. A wind pumping system according to claim 7, characterized in that: the length (L1) between the two apexes of the cross section of the middle wing (31) is the left wing (32) front end to the right wing (33) 1/3 of the distance between the front ends (L2).

9. The wind pumping system according to claim 8, wherein: the long curved edge (321) of the cross section of the left wing plate (32) is an arc, and the center of the arc is located at the inner hole wall. (310) at the axis of rotation.