CN111503002B

CN111503002B - Variable water pump

Info

Publication number: CN111503002B
Application number: CN202010482912.2A
Authority: CN
Inventors: 韩国昊; 李红生; 邵倩倩
Original assignee: Jining Antai Mine Equipment Manufacturing Co ltd
Current assignee: JINING ANTAI MINE EQUIPMENT MANUFACTURING Co.,Ltd.
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-04-13
Anticipated expiration: 2040-06-01
Also published as: CN111503002A

Abstract

The invention discloses a variable displacement water pump, which comprises a pump body, a pump cavity is arranged in the pump body, a pump cover is installed on the right end of the pump cavity, a power shaft is rotatably connected in the pump cover, and a power shaft is inside the pump cavity. A left wheel disc and a right wheel disc are fixedly installed on the shaft; a water inlet pipe and a water outlet pipe are arranged on the side of the pump body; a plurality of first blades are hinged between the left wheel disc and the right wheel disc, and the left wheel disc is on the A left arc-shaped slot and a left straight slot are provided; the right wheel disc is provided with a right arc-shaped slot and a right straight slot; the first blade is pivoted with a second blade through the shaft, and the left side of the second blade There is a left convex column on the side and a right convex column on the right side; the two ends of the shaft rod are respectively located in the left arc groove and the right arc groove; the pump cover is provided with an adjustment component, and the adjustment component is used for Because the drive shaft slides in the left arc groove and the right arc groove; the variable water pump not only has a simple structure, but also the displacement can be adjusted.

Description

Variable water pump

Technical Field

The invention belongs to the technical field of water pumps, and particularly relates to a variable water pump.

Background

The water pump is a machine which applies work to fluid and is used for increasing the pressure of the liquid so as to enable the liquid to be conveyed and flowed. In industrial production and daily life, water pumps are used for conveying clean water and other liquids with physical and chemical properties similar to water, and are widely applied to the fields of tap water engineering, air-conditioning circulating water engineering, boiler water supply, pressurized water supply, fire sprinkler systems, irrigation, power stations, industrial water supply systems, ship industry, oil refining industry and the like.

Water pumps are classified into various types according to their operating principles, including centrifugal pumps. Before the centrifugal water pump starts, fill pump chamber and inlet tube with water earlier, after the operation, under the effect of the centrifugal force that the impeller high-speed rotation produced, the water in the impeller runner is got rid of to all around, the impeller entry forms the vacuum, external water is followed the inlet tube and is inhaled and has supplemented this space under atmospheric pressure, then the inspiratory water is thrown away and gets into the outlet pipe by the impeller again, consequently centrifugal water pump under the effect of the centrifugal force that the impeller high-speed rotation produced, can absorb water, pressurized-water in succession, accomplish the transport to water. The prior centrifugal water pump can only change the discharge capacity of the pump by adjusting the rotating speed, thereby not only influencing the efficiency of the pump and the lift of the pump, but also needing a speed regulating mechanism to control. Because speed adjusting mechanisms such as frequency converters are expensive, when different flow rates are needed, the control is widely adopted by changing pipeline characteristics through a throttle valve, and a large amount of energy is wasted.

Disclosure of Invention

The invention aims to provide a variable displacement water pump which is simple in structure and adjustable in displacement.

In order to achieve the purpose, the invention provides the following technical scheme:

a variable water pump comprises a pump body, wherein a pump cavity is arranged in the pump body, a pump cover is fixedly installed at the opening at the right end of the pump cavity, a power shaft is rotatably connected in the pump cover, and a left wheel disc and a right wheel disc are fixedly installed on the power shaft in the pump cavity; a water inlet pipeline is arranged on the side surface of the pump body along the axial direction of the power shaft, and a water outlet pipeline is arranged along the radial direction of the power shaft; a plurality of first blades are hinged between the left wheel disc and the right wheel disc at a position close to the power shaft, a left arc-shaped groove and a left straight groove are formed in the left side of each first blade on the left wheel disc, and the left straight groove is arranged along the radial direction of the left wheel disc; the right side of each first blade on the right wheel disc is provided with a right arc-shaped groove and a right straight groove, and the right straight groove is arranged along the radial direction of the right wheel disc; a second blade is pivoted at one end of the first blade far away from the power shaft through a shaft lever, a left convex column positioned in the left straight groove is arranged at the left side of the second blade, and a right convex column positioned in the right straight groove is arranged at the right side of the second blade; two ends of the shaft lever are respectively positioned in the left arc-shaped groove and the right arc-shaped groove; an adjusting assembly is arranged in the pump cover and used for driving the shaft lever to slide in the left arc-shaped groove and the right arc-shaped groove; when the axostylus axostyle slides to the one end of left arc wall and right arc wall, first blade and second blade expand, and the discharge capacity of variable water pump is the biggest, and when the axostylus axostyle slides to the other end of left arc wall and right arc wall, first blade and second blade are folding, and the discharge capacity of variable water pump is minimum.

Further, a blade cavity is formed between the left wheel disc and the right wheel disc, a water suction hole used for communicating the water inlet pipeline and the blade cavity is formed in the center of the left wheel disc, a shaft sleeve is arranged in the water suction hole through a supporting rod, and the shaft sleeve is fixedly installed on the power shaft.

Furthermore, the adjusting assembly comprises an adjusting motor and a rotating block, the rotating block is rotatably connected in the pump cover and fixedly connected with the power shaft, the right wheel disc extends rightwards to be provided with a convex sleeve sleeved on the power shaft, the convex sleeve is rotatably connected with a variable sleeve, the left end of the variable sleeve is radially provided with a plurality of shifting pieces in one-to-one correspondence with the first blades, shifting grooves are formed in the shifting pieces in the radial direction of the variable sleeve, and the right end of the shaft lever penetrates through the right arc-shaped groove and extends into the shifting grooves; the outer side of the variable sleeve is fixedly provided with an outer gear ring, the adjusting motor is fixedly arranged in the rotating block, and an output shaft of the adjusting motor is fixedly provided with a gear meshed with the outer gear ring.

Further, when the displacement of the variable water pump is maximum, the left convex column is positioned at the far end of the left straight groove, and the right convex column is positioned at the far end of the right straight groove; when the displacement of the variable water pump is minimum, the left convex column is positioned at the proximal end of the left straight groove, and the right convex column is positioned at the proximal end of the right straight groove.

Furthermore, the left side of the first blade close to the power shaft is provided with a left convex shaft, the right side of the first blade is provided with a right convex shaft, the left convex shaft is rotatably connected in the left wheel disc, and the right convex shaft is rotatably connected in the right wheel disc.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

according to the variable displacement vane, the included angle between the first vane and the second vane can be controlled by controlling the rotating angle of the variable sleeve, so that the effective working length of the vane formed by the first vane and the second vane is changed, and the displacement is changed; the invention has simple structure and compact volume, can change the displacement without using a frequency converter and has the advantage of energy saving.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIGS. 2-3 are three-dimensional schematic views of a partially assembled configuration of the present invention, with the present invention at a high displacement;

FIGS. 4-5 are three-dimensional illustrations of a partially assembled configuration of the present invention, with the present invention at a low displacement;

FIG. 6 is a schematic three-dimensional structure of a first blade and a second blade of the present invention;

FIG. 7 is a schematic three-dimensional structure of a left wheel disc according to the present invention;

FIG. 8 is a schematic three-dimensional view of a right wheel according to the present invention;

fig. 9 is a three-dimensional structure diagram of the variable sleeve of the present invention.

Detailed Description

Referring to fig. 1-9, a variable displacement water pump includes a pump body 1, a pump cavity 1a is provided in the pump body 1, a pump cover 2 is fixedly installed at an opening at a right end of the pump cavity 1a, a power shaft 3 is rotatably connected in the pump cover 2, and a left wheel disc 4 and a right wheel disc 5 are fixedly installed on the power shaft 3 in the pump cavity 1 a; a water inlet pipeline 1b is arranged on the side surface of the pump body 1 along the axial direction of the power shaft 3, and a water outlet pipeline 1c is arranged along the radial direction of the power shaft 3; between left side rim plate 4 and the right rim plate 5 there is a plurality of first blades 62 in the department of being close to power shaft 3 articulated, wherein, every first blade 62 is equipped with left protruding axle 621 in the left side that is close to power shaft 3, and the right side is equipped with right protruding axle 622, left side protruding axle 621 rotates to be connected in left rim plate 4, right protruding axle 622 rotates to be connected in right rim plate 5.

The left wheel disc 4 is provided with a left arc-shaped groove 41 and a left straight groove 42 on the left side of each first blade 62, and the left straight groove 42 is arranged along the radial direction of the left wheel disc 4; a right arc-shaped groove 51 and a right straight groove 52 are formed in the right side of each first blade 62 on the right wheel disc 5, and the right straight groove 52 is arranged along the radial direction of the right wheel disc 5; the first blade 62 is pivoted with a second blade 61 at one end far away from the power shaft 3 through a shaft rod 63, a left convex column 611 positioned in the left straight groove 42 is arranged at the left side of the second blade 61, and a right convex column 612 positioned in the right straight groove 52 is arranged at the right side; the two ends of the shaft rod 63 are respectively positioned in the left arc-shaped groove 41 and the right arc-shaped groove 51; an adjusting assembly is arranged in the pump cover 2 and used for driving the shaft rod 63 to slide in the left arc-shaped groove 41 and the right arc-shaped groove 51; when the shaft 63 slides to one end of the left arc-shaped groove 41 and the right arc-shaped groove 51, the first blade 62 and the second blade 61 are unfolded, the displacement of the variable water pump is maximum, at this time, the left convex column 611 is positioned at the far end of the left straight groove 42, and the right convex column 612 is positioned at the far end of the right straight groove 52; when the shaft 63 slides to the other end of the left arc-shaped groove 41 and the right arc-shaped groove 51, the first blade 62 and the second blade 61 are folded, the displacement of the variable water pump is minimum, at this time, the left convex column 611 is located at the proximal end of the left straight groove 42, and the right convex column 612 is located at the proximal end of the right straight groove 52.

A blade cavity is formed between the left wheel disc 4 and the right wheel disc 5, a water suction hole 4a used for communicating the water inlet pipeline 1b and the blade cavity is formed in the center of the left wheel disc 4, a shaft sleeve 4c is arranged in the water suction hole 4a through a supporting rod 4b, and the shaft sleeve 4c is fixedly installed on the power shaft 3.

The adjusting assembly comprises an adjusting motor 10 and a rotating block 9, the rotating block 9 is rotatably connected in the pump cover 2 and fixedly connected with the power shaft 3, the right wheel disc 5 extends rightwards to be provided with a convex sleeve 5a sleeved on the power shaft 3, the convex sleeve 5a is rotatably connected with a variable sleeve 11, the left end of the variable sleeve 11 is radially provided with a plurality of shifting pieces 111 corresponding to the first blades 62 one by one, a shifting groove 1111 is formed in the shifting pieces 111 along the radial direction of the variable sleeve 11, and the right end of the shaft rod 63 penetrates through the right arc-shaped groove 51 and extends into the shifting groove 1111; the outer side of the variable sleeve 11 is fixedly provided with an outer gear ring 8, the adjusting motor 10 is fixedly arranged in the rotating block 9, and the output shaft of the adjusting motor 10 is fixedly provided with a gear 7 meshed with the outer gear ring 8.

When the water-saving device works, the power shaft 3 drives the left wheel disc 4 and the right wheel disc 5 to rotate, so that water in the water inlet pipeline 1b enters the blade cavity through the water suction holes 4a and is discharged from the water outlet pipeline 1c through the first blades 62 and the second blades 61. The water pump is when needs adjust the discharge capacity, control accommodate motor 10 drives gear 7 and rotates, and then drive variable cover 11 through outer ring gear 8 and rotate, drive plectrum 111 and rotate when variable cover 11 rotates, the cooperation through group groove 1111 and axostylus axostyle 63 right-hand member drives the both ends of axostylus axostyle 63 respectively along left arc wall 41 and the motion of right arc wall 51 when plectrum 111 rotates, change the contained angle between first blade 62 and the second blade 61, thereby change the effective working length of the blade that first blade 62 and second blade 61 constitute, and then change the discharge capacity size. As shown in fig. 2, the angle between the first vane 62 and the second vane 61 is the largest, and the effective working length is the longest, at which the displacement is the largest. As shown in fig. 4, the angle between the first vane 62 and the second vane 61 is the smallest, and the effective working length is the shortest, when the displacement is the smallest.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A variable displacement water pump, comprising a pump body, a pump cavity is provided in the pump body, a pump cover is fixedly installed at the opening of the right end of the pump cavity, a power shaft is rotatably connected in the pump cover, and a power shaft is rotatably connected in the pump cavity. A left wheel disc and a right wheel disc are fixedly installed on the power shaft; the side of the pump body is provided with a water inlet pipe along the axial direction of the power shaft, and a water outlet pipe is provided along the radial direction of the power shaft; it is characterized in that the left wheel A plurality of first blades are hinged between the disk and the right wheel near the power shaft, and a left arc groove and a left straight groove are arranged on the left side of each first blade on the left wheel, and the left straight The grooves are arranged along the radial direction of the left wheel disk; the right wheel disk is provided with a right arc groove and a right straight groove on the right side of each first blade, and the right straight groove is arranged along the radial direction of the right wheel disk; A second blade is pivotally connected to the first blade at one end away from the power shaft through a shaft. The left side of the second blade is provided with a left convex column located in the left straight groove, and the right side is provided with a left straight groove located in the right straight groove. The two ends of the shaft rod are located in the left arc-shaped groove and the right arc-shaped groove respectively; the pump cover is provided with an adjustment assembly, which is used to drive the shaft rod in the left arc groove and the right arc groove. The right arc groove slides; when the shaft slides to one end of the left arc groove and the right arc groove, the first blade and the second blade expand, and the displacement of the variable water pump is the largest. When the other end of the right arc groove, the first blade and the second blade are folded, the displacement of the variable water pump is the smallest;

A blade cavity is formed between the left wheel disc and the right wheel disc, and a water suction hole for connecting the water inlet pipe and the blade cavity is provided at the center of the left wheel disc. The shaft sleeve is fixedly installed on the power shaft;

The adjustment assembly includes an adjustment motor and a rotating block, the rotating block is rotatably connected in the pump cover and is fixedly connected with the power shaft, the right wheel plate extends to the right and is provided with a convex sleeve sleeved on the power shaft, the A variable sleeve is rotatably connected to the convex sleeve. The left end of the variable sleeve is radially provided with a plurality of paddles corresponding to the first blades one-to-one. The right end of the shaft rod extends into the dial slot through the right arc-shaped groove; the outer side of the variable sleeve is fixedly installed with an external gear ring, the adjusting motor is fixedly installed in the rotating block, and the output shaft of the adjusting motor is fixed on the A gear that meshes with the outer ring gear is installed.

2. The variable water pump according to claim 1, wherein when the displacement of the variable water pump is the largest, the left convex column is located at the distal end of the left straight groove, and the right convex column is located at the far end of the right straight groove. The central end; when the displacement of the variable water pump is the smallest, the left convex column is located at the proximal end of the left straight groove, and the right convex column is located at the proximal end of the right straight groove.

3. The variable displacement water pump according to claim 1, wherein the first blade is provided with a left convex shaft on the left side close to the power shaft, and a right convex shaft is provided on the right side, and the left convex shaft is rotatably connected to the power shaft. In the left wheel disc, the right convex shaft is rotatably connected in the right wheel disc.