CN112302952A

CN112302952A - Vacuum-pumping water pump

Info

Publication number: CN112302952A
Application number: CN202011263342.4A
Authority: CN
Inventors: 蓝晶晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-02-02

Abstract

The invention discloses a vacuum-pumping water pump, which comprises a pump body and an impeller, and is characterized in that: the impeller blades can radially extend and retract to penetrate through the radial groove of the pump shaft, a reset spring is arranged between the blades and the radial groove, a guide plate is arranged at the upper end of the impeller, the guide plate is fixedly sleeved on the pump shaft, a lower exhaust hole is arranged at the right part of the guide plate, a switching plate capable of moving left and right is arranged at the lower end of the impeller, the switching plate drives the blades to radially contract, a suction hole and a switching cover are arranged on the switching plate, an eccentric A is arranged between the switching cover and the pump shaft, the impeller and the guide plate are matched and arranged in the switching cover, the switching cover can be sleeved on the pump shaft in an up-and-down mode, an upper spring is arranged between the switching cover and the pump inner cover, an upper exhaust hole is arranged on the switching, and a lower spring is arranged between the floating cover and the switching cover, the floating cover at the highest position is in sealing fit with the upper exhaust hole, and the switching cover can drive the switching plate to move. The invention does not need to pump, and has simple structure.

Description

Vacuum-pumping water pump

Technical Field

The invention relates to an improved water pump, in particular to an improved vacuum water pump.

Background

The water pump is widely applied to the industries of production of chemical and petroleum departments, agricultural production, mining and metallurgical industries, electric power departments, nuclear power stations, national defense construction, pharmacy, water conservancy and the like,

the water pump operates by causing water to centrifugally move as the impeller rotates. The water pump must make pump body inner chamber and absorb water and be filled with water before starting, then the starter motor makes the pump shaft drive impeller and water and be high-speed rotary motion, and water or oil take place centrifugal motion, are got rid of to the impeller outer fringe, the pipeline of pressing water that flows into the water pump through pump body internal flow way, and its shortcoming lies in: because most water pumps are before starting, the pump body inner chamber does not fill with water, if starting motor drive impeller rotatory this moment, can't make the pump body inner chamber produce the vacuum, can't make the water that absorbs in the water pipe promptly be inhaled the pump body inner chamber to discharge via the runner in the pump body, consequently need before starting motor, the manual work fills the pump body inner chamber with water, commonly known as "pump priming", have use loaded down with trivial details, with high costs, influence efficiency, influence safe technical defect.

In addition, in the prior art, an air extracting device is additionally arranged in the water pump to pre-evacuate air in the inner cavity of the pump body to generate vacuum, but the air extracting device and the impeller are separately arranged, so that the water pump has the defects of complex structure and high cost.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the vacuum water pump which does not need to be pumped and has a simple structure.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme: this kind of evacuation water pump, including the pump body and impeller, be equipped with pump chamber, imbibition chamber and play sap cavity in the pump body, port under imbibition chamber intercommunication pump chamber, go out sap cavity intercommunication pump chamber left side, impeller work in the pump chamber, pump body upper end is equipped with the pump inner cup, and the pump shaft is worn to be equipped with in the pump inner cup is rotatable, and the pump shaft upper end links to each other with power device, and the pump shaft lower extreme stretches into pump chamber connection impeller, its characterized in that: the impeller blades can radially extend and retract to penetrate through a radial groove of the pump shaft, a reset spring is arranged between the blades and the radial groove, a guide plate is arranged at the upper end of the impeller, the guide plate is fixedly sleeved on the pump shaft, a lower exhaust hole is arranged at the right part of the guide plate, a switching plate is arranged at the lower end of the impeller, the switching plate can move left and right and is arranged on the positioning ring, the positioning ring is fixed at the lower port of the pump cavity, a convex ring for driving the blades to radially contract is arranged on the switching plate, a suction hole with the diameter larger than the outer diameter of the pump shaft is arranged on the switching plate, the pump shaft eccentrically extends into the suction hole, a switching cover is also arranged on the switching plate in a sealing manner, an eccentricity A is arranged between the switching cover and the pump shaft, the impeller and the guide plate are matched and arranged in the switching cover, the outer circle of, an upper exhaust hole is formed in the switching cover, a floating cover is arranged between the switching plate and the switching cover, the floating cover can be sleeved on the pump shaft in a vertically moving mode, a lower spring is arranged between the floating cover and the switching cover, and the floating cover at the highest position is in sealing fit with the upper exhaust hole; switch and be equipped with oblique kicking block on the outer wall of lid right side, switch the board right-hand member and be equipped with oblique kicking block down, oblique kicking block is moved to the left side by last kicking block drive down, and the left side of kicking block sets limit structure to the lower side, and the kicking block can be moved about to the lower side and is restricted between limit structure and pump chamber right wall, still is equipped with the pre-compaction spring between limit structure and the oblique kicking block down.

Preferably, the upper inclined ejecting block is installed on the outer wall of the right side of the switching cover through a transverse plate, the upper position and the lower position of the upper inclined ejecting block are arranged on the transverse plate in an adjustable mode, and the upper inclined ejecting block is provided with an upper fine adjustment rod.

Preferably, the upper inclined ejecting block is made of rubber.

Preferably, the limiting structure is a limiting block, the limiting block is connected with the inner wall of the pump cavity, a lower fine adjustment rod is arranged on the limiting block, and the lower fine adjustment rod is in limiting fit with the lower inclined ejector block.

Preferably, a sealing ring is arranged between the upper part of the pump inner cover and the pump shaft, and the sealing ring is pressed by a gland which is fixed on the pump inner cover.

Preferably, the power device is a motor, the motor is mounted on a suspension body, the suspension body is mounted on the pump body through a support, and an output shaft of the motor is in transmission connection with the pump shaft.

The improved vacuum-pumping water pump has the advantages that the improved vacuum-pumping water pump does not need to be filled with a pump, can automatically suck and remove gas in the inner cavity of the pump body and the inner cavity of the water suction pipe, can stop the operation of air suction when the pump normally discharges liquid, and has strong safety and high reliability; the air exhaust device has the advantages of improving efficiency, saving cost, having no need of independently arranging an air exhaust device and having simple structure.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the structure of the present invention in the pumping state.

FIG. 2 is a schematic diagram of the liquid discharge state of the present invention.

Fig. 3 is a structural view of the power unit of the present invention.

FIG. 4 is a cross-sectional view of the D-D blade of FIG. 1 of the present invention.

FIG. 5 is a cross-sectional view of the E-E blade of FIG. 2 of the present invention.

Detailed Description

The drawings show the structure of the invention, and the details thereof are further described below with reference to the drawings. In this embodiment, the vacuum water pump includes a pump body 1 and an impeller 30, a pump cavity, a liquid suction cavity 21 and a liquid outlet cavity 2 are arranged in the pump body 1, the liquid suction cavity 21 is communicated with a lower port of the pump cavity, the liquid suction cavity 21 is externally connected with a water suction pipe, the liquid outlet cavity 2 is communicated with a left side of the pump cavity, the impeller 30 works in the pump cavity, an inner pump cover 8 is arranged at an upper end of the pump body 1, a pump shaft 10 is rotatably arranged on the inner pump cover 8, an upper end of the pump shaft 10 is connected with a power device 13, a lower end of the pump shaft 10 extends into the pump cavity and is connected with the impeller 30, blades of the impeller 30 are radially arranged in a radial groove of the pump shaft 10 in a telescopic manner, a return spring 28 is arranged between the blades and the radial groove, a guide plate 4 is arranged at an upper end of the impeller 30, the guide plate 4 approaches the impeller 30, the guide plate 4 is fixedly sleeved on the, the switching plate 25 can move left and right and is arranged on the positioning ring 26, the positioning ring 26 is fixed at the lower port of the pump cavity, the switching plate 25 is provided with a convex ring 5 for driving the blades to contract radially, the convex ring 5 is in transmission fit with the outer ends of the blades, the switching plate 25 is provided with a suction hole 29 with the aperture larger than the outer diameter of the pump shaft 10, the pump shaft 10 eccentrically extends into the suction hole 29, the switching plate 25 is also provided with a switching cover 3 in a sealing way, an eccentric A is arranged between the switching cover 3 and the pump shaft 10, an impeller 30 and a guide plate 4 are arranged in the switching cover 3 in a matching way, the outer circle of the guide plate 4 is in sealing fit with the inner side wall of the switching cover 3, the switching cover 3 can move up and down and is sleeved on the pump shaft 10, an upper spring 7 is arranged between the switching cover 3 and the pump inner cover 8, the switching cover 3 is provided with an upper exhaust hole 16, a floating cover 17 is arranged between the, the floating cover 17 at the highest position is in sealing fit with the upper exhaust hole 16; the outer wall of the right side of the switching cover 3 is provided with an upper oblique jacking block 20, the right end of the switching plate 25 is provided with a lower oblique jacking block 22, the lower oblique jacking block 22 is driven by the upper oblique jacking block 20 to move left, the left side of the lower oblique jacking block 22 is provided with a limiting structure, the lower oblique jacking block 22 can move left and right and is limited between the limiting structure and the right wall of the pump cavity, and a pre-pressing spring 23 is further arranged between the limiting structure and the lower oblique jacking block 22.

As a further improved embodiment, the upper inclined top block 20 is mounted on the outer wall of the right side of the switching cover 3 through a horizontal plate 19, the upper inclined top block 20 is vertically adjustably provided on the horizontal plate 19, the upper fine adjustment rod 18 is disposed on the upper inclined top block 20, and preferably, the upper inclined top block 20 is made of rubber. Wherein the upper fine adjustment rod 18 has the following functions: the upper inclined ejecting block 20 can be adjusted to move up and down, and when the lower end surface of the switching cover 3 contacts with the upper end surface of the lower switching plate 25 to form a sealing surface, the upper inclined ejecting block 20 is deformed as little as possible.

As a further improved specific implementation mode, the limiting structure is a limiting block, the limiting block is connected with the inner wall of the pump cavity, a lower fine adjustment rod 24 is arranged on the limiting block, and the lower fine adjustment rod 24 is in limiting fit with the lower inclined ejector block 22. Wherein the lower vernier bar 24 functions as: the distance of leftward movement of the switch plate 25 can be adjusted, so that the vertical axis of the switch plate 25 is consistent with the vertical axis of the switch cover 3, and when the switch cover 3 moves downwards, the switch plate is not blocked by the upper end face of the blade, thereby eliminating the problem that the switch plate cannot move downwards.

As a further improved embodiment, a sealing ring 15 is arranged between the upper part of the pump inner cover 8 and the pump shaft 10, the sealing ring 15 is pressed by a gland 14, and the gland 14 is fixed on the pump inner cover 8 to ensure the sealing performance between the pump inner cover 8 and the pump shaft 10.

As a further improved specific embodiment, the power device 13 is a motor, the motor is mounted on a suspension body 12, the suspension body 12 is mounted on the pump body 1 through a bracket 9, and an output shaft of the motor is in transmission connection with the pump shaft 10.

As a further improved embodiment, the right side of the suction hole 29 is provided with an arc-shaped notch 31, the arc-shaped notch 31 can be matched with and accommodate the right part of the pump shaft 10, and when the right part of the pump shaft 10 is positioned in the arc-shaped notch 31 of the suction hole 29, the suction hole 29 has more space to match with the impeller 30 for air suction.

The starting process of the invention is as follows: starting a motor to drive a pump shaft 10 to rotate, wherein the pump shaft 10 drives blades to rotate, an eccentric A is arranged between a switching cover 3 and the pump shaft 10, the length of the blades of an impeller 30 extending out of a radial groove of the pump shaft 10 is different, the space volume between the two blades can be sequentially circulated from big to small and then big when the blades rotate, a suction hole 29 is positioned at the lower part of a larger volume, and a lower exhaust hole 27 is positioned at the upper part of a smaller volume, so that when the blades rotate along with the pump shaft 10, gas in a liquid suction cavity 21 is sucked from the suction hole 29 and then discharged from the lower exhaust hole 27 to the upper exhaust hole 16, when a gas medium in the liquid suction cavity 21 is sucked out, the liquid in the liquid suction cavity 21 is filled with liquid, meanwhile, the liquid enters the lower exhaust hole 27 below a floating cover 17 through the suction hole 29 and the lower exhaust hole 27 and pushes the floating cover 17 to float upwards, when the upper end face of the floating cover 17 tightly presses the upper exhaust, and the switching cover 3 is pushed to move upwards, when the switching cover 3 moves upwards, the transverse plate 19, the upper fine adjustment rod 18 and the upper inclined ejector block 20 are driven to move upwards, the lower inclined ejector block 22 moves rightwards under the pushing of the pre-pressing spring 23, the switching plate 25 is driven to move rightwards, finally, when the lower inclined ejector block 22 contacts the right wall of the pump cavity, the right movement is stopped, at the moment, the length of the blades extending out of the radial groove of the pump shaft 10 is the same, and the blades rotate to lift and drain liquid.

The shutdown process of the invention: when the motor is turned off, the pump shaft 10 and the blades stop rotating, the floating cover 17 moves downward under the action of the lower spring 6, meanwhile, the switching cover 3 also moves downward under the action of the upper spring 7, and drives the upper fine adjustment rod, the transverse plate 19 and the upper inclined ejector block 20 to move downward, the upper inclined ejector block 20 compresses the lower inclined ejector block 22 and pushes the lower inclined ejector block 22 to move leftward, when the left end surface of the lower inclined ejector block 22 tightly pushes the lower fine adjustment rod 24, the lower inclined ejector block 22 stops moving leftward, and the lower end surface of the switching cover 3 just compresses the upper end surface of the lower switching plate 25 (if the lower end surface of the switching cover 3 does not contact the upper end surface of the lower switching plate 25 at the moment, the upper inclined ejector block 20 is made of rubber and has certain elasticity, so that the switching cover 3 can continue moving downward until the lower end surface of the switching cover 3 tightly compresses the upper end surface of the switching plate 25 and forms a seal).

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an evacuation water pump, is equipped with pump chamber, imbibition chamber and play sap cavity in the pump body, port under imbibition chamber intercommunication pump chamber, goes out sap cavity intercommunication pump chamber left side, and the impeller work is in the pump chamber, pump body upper end is equipped with the pump inner cup, and the pump shaft is worn to be equipped with in the pump inner cup is rotatable, and the pump shaft upper end links to each other with power device, and the pump shaft lower extreme stretches into pump chamber connection impeller, its characterized in that: the impeller blades can radially extend and retract to penetrate through a radial groove of the pump shaft, a reset spring is arranged between the blades and the radial groove, a guide plate is arranged at the upper end of the impeller, the guide plate is fixedly sleeved on the pump shaft, a lower exhaust hole is arranged at the right part of the guide plate, a switching plate is arranged at the lower end of the impeller, the switching plate can move left and right and is arranged on the positioning ring, the positioning ring is fixed at the lower port of the pump cavity, a convex ring for driving the blades to radially contract is arranged on the switching plate, a suction hole with the diameter larger than the outer diameter of the pump shaft is arranged on the switching plate, the pump shaft eccentrically extends into the suction hole, a switching cover is also arranged on the switching plate in a sealing manner, an eccentricity A is arranged between the switching cover and the pump shaft, the impeller and the guide plate are matched and arranged in the switching cover, the outer circle of, an upper exhaust hole is formed in the switching cover, a floating cover is arranged between the switching plate and the switching cover, the floating cover can be sleeved on the pump shaft in a vertically moving mode, a lower spring is arranged between the floating cover and the switching cover, and the floating cover at the highest position is in sealing fit with the upper exhaust hole; switch and be equipped with oblique kicking block on the outer wall of lid right side, switch the board right-hand member and be equipped with oblique kicking block down, oblique kicking block is moved to the left side by last kicking block drive down, and the left side of kicking block sets limit structure to the lower side, and the kicking block can be moved about to the lower side and is restricted between limit structure and pump chamber right wall, still is equipped with the pre-compaction spring between limit structure and the oblique kicking block down.

2. The vacuum water pump as claimed in claim 1, wherein: go up oblique kicking block and install on switching lid right side outer wall through the diaphragm, and go up oblique kicking block and go up adjustable the setting in position from top to bottom on the diaphragm, go up oblique kicking block and set up the fine-tuning pole.

3. The vacuum water pump according to claim 1 or 2, wherein: the upper inclined ejector block is made of rubber.

4. The vacuum water pump as claimed in claim 1, wherein: the limiting structure is a limiting block, the limiting block is connected with the inner wall of the pump cavity, a lower fine adjustment rod is arranged on the limiting block, and the lower fine adjustment rod is in limiting fit with the lower inclined jacking block.

5. The vacuum water pump as claimed in claim 1, wherein: and a sealing ring is arranged between the upper part of the pump inner cover and the pump shaft, and is pressed by a gland which is fixed on the pump inner cover.

6. The vacuum water pump as claimed in claim 1, wherein: the power device is a motor, the motor is arranged on a suspension body, the suspension body is arranged on the pump body through a support, and an output shaft of the motor is in transmission connection with the pump shaft.

7. The vacuum water pump as claimed in claim 1, wherein: and an arc-shaped notch is formed in the wall of the right hole of the suction hole and can be matched with and accommodate the right part of the pump shaft.