CN112145438A

CN112145438A - Water pump

Info

Publication number: CN112145438A
Application number: CN202011063306.3A
Authority: CN
Inventors: 徐国华
Original assignee: Individual
Current assignee: Hebei Jitou Machinery Equipment Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2020-12-29
Anticipated expiration: 2040-09-30
Also published as: CN112145438B

Abstract

The invention discloses a water pump, which comprises a pump body, a pump cover, an impeller, a pump shaft and a motor, wherein the pump cover is arranged on an opening on the right side of the pump body, the pump shaft is rotatably arranged on the pump cover in a penetrating way, the left end of the pump shaft is connected with the impeller in a transmission way, and the right end of the pump shaft is connected with the motor in a transmission way, and the water pump is characterized in that: the pump cover is internally provided with a rotating sleeve and a control sleeve, the rotating sleeve can be sleeved on the pump shaft in a linkage manner, the control sleeve is sleeved on the rotating sleeve, the control sleeve is fixedly connected with the pump cover, an axial driving structure is arranged between the control sleeve and the rotating sleeve, the rotating sleeve can axially reciprocate and is arranged between the pump shaft and the control sleeve, the rotating sleeve is provided with a reset assembly, the left end of the rotating sleeve is respectively sealed and attached to the pump shaft and the control sleeve, when the rotating sleeve moves rightwards, the left side of the rotating sleeve forms an air suction cavity, a one-way air inlet valve and a one-way exhaust valve are arranged on the left side face of the corresponding pump cover in a matched manner, the one-way. The invention does not need to pump, and is convenient to use.

Description

Water pump

Technical Field

The invention relates to an improved pump, in particular to an improved 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 plants, national defense construction, pharmacy, water conservancy and the like, and works by utilizing the rotation of the impeller to enable water or oil to generate centrifugal motion. Before the water pump or the oil pump is started, the inner cavity of the pump body and the water suction pipe are filled with water or oil, then the motor is started, the pump shaft drives the impeller and the water or the oil to do high-speed rotation motion, the water or the oil generates centrifugal motion and is thrown to the outer edge of the impeller, and the water or the oil flows into a water pressing pipeline or an oil pressing pipeline of the water pump or the oil through a flow channel in the pump body, and the water pump or the oil pump has the following defects that: because most centrifugal pump pumps are before starting, the pump body inner chamber does not fill with water or oil, if starting motor drives the impeller rotation this moment, can't make the pump body inner chamber produce the vacuum, can't make the water or oil that absorbs in the water pipe or absorb the oil pipe absorbed the pump body inner chamber promptly, thus discharge via the runner in the pump body, consequently need before starting motor, the manual work fills the pump body inner chamber with water or oil, commonly known as "pump priming", have use loaded down with trivial details, with high costs, influence efficiency, influence the technical defect of safety.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a water pump which is convenient and practical and does not need to be pumped.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme: this kind of water pump, including the pump body, pump cover, impeller, pump shaft and motor, be equipped with the outlet chamber of pump chamber and left inlet chamber of intercommunication pump chamber and intercommunication pump chamber upside in the pump body, the impeller is joined in marriage in the pump chamber, the pump cover is located on the opening of pump body right side, the pump shaft is rotatable to be worn to locate on the pump cover, and pump shaft left end links to each other with the impeller transmission, and the pump shaft right-hand member links to each other its characterized in that with motor drive: the pump cover is internally provided with a rotating sleeve and a control sleeve, the rotating sleeve can be sleeved on the pump shaft in a linkage manner, the control sleeve is sleeved on the rotating sleeve, the control sleeve is fixedly connected with the pump cover, an axial driving structure is arranged between the control sleeve and the rotating sleeve, the rotating sleeve can axially reciprocate between the pump shaft and the control sleeve, the rotating sleeve is provided with a resetting component, the left end of the rotating sleeve is respectively and hermetically attached to the pump shaft and the control sleeve, when the rotating sleeve moves rightwards, the left side of the rotating sleeve forms an air suction cavity, the corresponding left side surface of the pump cover is provided with a one-way air inlet valve and a one-way exhaust valve, the one-way air inlet valve is communicated with the; the axial driving structure comprises a spiral groove arranged on the inner circle of the control sleeve and a positioning rod radially penetrating the rotating sleeve, the positioning rod can be radially movably arranged and is provided with a first return spring, when the outer end of the positioning rod extends out of the rotating sleeve, the positioning rod is in transmission fit with the spiral groove, the left end of the spiral groove is provided with the flat groove, the flat groove is selectively connected with the spiral groove through the guide cushion block which is arranged in a rotating way, the guide cushion block is provided with a switching mechanism, the right end of the spiral groove is provided with an arc inclined plane which drives the positioning rod to retract into the rotating sleeve, when the outer end of the positioning rod retracts into the rotating sleeve, the inner end of the positioning rod extends into the rotary sleeve and is arranged in a limit opening arranged on the excircle of the pump shaft, the upper end of the corresponding positioning rod is provided with a clamping part, the clamping part is in limit fit with the inner circle of the rotary sleeve, and the clamping limiting matching of the clamping component and the left side wall of the limiting opening is removed, and the left side wall of the limiting opening corresponds to the flat groove.

The switching mechanism comprises a liquid inlet cavity, a push plate, a transverse push rod and an adjusting box, wherein the liquid inlet cavity is positioned on the right side of the outlet cavity, the liquid inlet cavity is communicated with the outlet cavity, the push plate can be arranged in the liquid inlet cavity in a left-and-right mode, the push plate is provided with a second reset spring in a matched mode, the left end of the transverse push rod extends into the liquid inlet cavity to be connected with the push plate, the right end of the transverse push rod extends into the adjusting box, the adjusting box is internally and rotatably provided with a vertical push rod, a switching column and a rotating rod, the lower end of the vertical push rod is fixedly connected with the upper end of the switching column, gear and rack transmission is formed between the transverse push rod and the vertical push rod, helical gear transmission is formed between the lower end of the switching column and the horizontally arranged rotating rod, one end of the rotating rod extends into the pump cover to be connected with a guide cushion block, a clamping rod, the right end of the round sleeve is connected with a push rod, and the lower end of the push rod extends into the pump cover to be in transmission fit with the right end of the rotary sleeve.

The clamping part comprises a clamping tooth and a fourth reset spring, the clamping tooth can move left and right and is arranged in a groove in the left side face of the outer end of the positioning rod, and the fourth reset spring is connected between the clamping tooth and the groove.

The reset assembly comprises a horizontal push spring and a plane bearing, the plane bearing is connected to the right end of the rotating sleeve, and the horizontal push spring is connected between the plane bearing and the pump cover.

The improved water pump has the advantages that the improved 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 motor does not need to be arranged independently during air exhaust, and the air exhaust device has the advantages of improving efficiency and saving cost.

Drawings

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

FIG. 1 is a diagram of the pump of the present invention in a shut-down state.

FIG. 2 is a cross-sectional view taken along line D-D of FIG. 1 in accordance with the present invention.

Fig. 3 is a gas pumping state diagram of the present invention.

Fig. 4 is a structure diagram of the control sleeve when the air pump of the invention pumps air.

Fig. 5 is a structural view of a pump suction stop control sleeve according to the present invention.

FIG. 6 is an enlarged view of portion A of FIG. 1 according to the present invention.

FIG. 7 is a schematic cross-sectional view taken along line-E-E of FIG. 4 in accordance with the present invention.

Fig. 8 is a cross-sectional view taken along line C-C of fig. 2 in accordance with 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 water pump includes a pump body 1, a pump cover 20, an impeller 4, a pump shaft 37 and a motor 26, wherein the pump body 1 is provided with a pump cavity, an inlet cavity 2 communicating the left side of the pump cavity and an outlet cavity 7 communicating the upper side of the pump cavity, the inlet cavity 2 is communicated with a water suction pipe, the impeller 4 is arranged in the pump cavity, a seal ring 3 is arranged between the impeller 4 and the inlet cavity 2, a nest cavity 40 is formed in the area where the impeller 4 is located, the pump cover 20 is covered on the right side opening of the pump body 1, the pump cover 20 includes the pump body 1, a gland 6 connected to the left end of the pump body 1 and a middle support 24 connected to the right end of the pump body 1, the pump shaft 37 is rotatably arranged on the pump cover 20, the left end of the pump shaft 37 is in transmission connection with the impeller 4, the right end of the pump shaft 37 is in transmission connection with the motor 26, a rotary sleeve, the rotary sleeve 36 is provided with a key slot 31, the length of the key slot is greater than that of the key, the control sleeve 21 is sleeved on the rotary sleeve 36, the control sleeve 21 is fixedly connected with the pump cover 20, an anti-rotation pin 29 penetrates between the corresponding control sleeve 21 and the pump cover 20, an axial driving structure is arranged between the control sleeve 21 and the rotary sleeve 36, the rotary sleeve 36 can axially reciprocate between the pump shaft 37 and the control sleeve 21, the rotary sleeve 36 is provided with a reset component, the left end of the rotary sleeve 36 is respectively in sealing fit with the pump shaft 37 and the control sleeve 21, when the rotary sleeve 36 moves rightwards, the left side of the rotary sleeve 36 forms a suction cavity 25, the left side surface of the corresponding pump cover 20 is provided with a one-way air inlet valve 5 and a one-way exhaust valve 38, the one-way air inlet valve 5 is communicated with the suction cavity 25 and the pump cavity, the one-way exhaust valve 38 is communicated with; the axial driving structure comprises a spiral groove 19 arranged on the inner circle of a control sleeve 21 and a positioning rod 34 radially penetrating through a rotating sleeve 36, the positioning rod 34 can be radially movably arranged, the positioning rod 34 is provided with a first return spring 33, when the outer end of the positioning rod 34 extends out of the rotating sleeve 36, the positioning rod 34 is in transmission fit with the spiral groove 19, the left end of the spiral groove 19 is provided with a flat groove 45, the flat groove 45 is selectively connected with the spiral groove 19 through a guide cushion block 44 which is rotatably arranged, the guide cushion block 44 is provided with a switching mechanism, the right end of the spiral groove 19 is provided with an arc inclined plane 15 which drives the positioning rod 34 to retract into the rotating sleeve 36, when the outer end of the positioning rod 34 retracts into the rotating sleeve 36, the inner end of the positioning rod 34 extends into the rotating sleeve 36 and is placed in a limiting port 32 arranged on the outer circle of a pump shaft 37, the corresponding clamping component is arranged at the upper end of the positioning rod 34, the left side wall of the limiting opening 32 corresponds to the flat groove 45.

As a further improved specific embodiment, the switching mechanism includes a liquid inlet cavity 9, a push plate 10, a transverse push rod 12 and an adjusting box 13, the liquid inlet cavity 9 is located on the right side of the outlet cavity 7, the liquid inlet cavity 9 is communicated with the outlet cavity 7 through a liquid inlet hole 8, the push plate 10 is disposed in the liquid inlet cavity 9 in a left-right movement manner, the push plate 10 is provided with a second return spring 11, the left end of the transverse push rod 12 extends into the liquid inlet cavity 9 to be connected with the push plate 10, the right end of the transverse push rod 12 extends into the adjusting box 13, the adjusting box 13 is rotatably provided with a vertical push rod 14, a switching column 16 and a rotating rod 43, the lower end of the vertical push rod 14 is fixedly connected with the upper end of the switching column 16, a rack and pinion transmission is formed between the transverse push rod 12 and the vertical push rod 14, a helical gear transmission is formed between the lower end of the switching column 16 and the rotating rod 43 which is horizontally arranged, one end of the rotating rod 43 extends, the corresponding outer circle of the switching column 16 is provided with an anti-rotation surface 48, the anti-rotation surface 48 is matched with a clamping rod 17 in a locking mode, the clamping rod 17 is fixed at the left end of a round sleeve 18, the round sleeve 18 can move left and right and is sleeved on the pump cover 20, the round sleeve 18 is provided with a third return spring 28 in a matched mode, the right end of the round sleeve 18 is connected with a push rod 27, and the lower end of the push rod 27 extends into the pump cover 20 to be matched with the right end of a rotating.

As a specific embodiment of further improvement, the latch member includes a latch 35 and a fourth return spring 46, the latch 35 is disposed in a groove on the left side surface of the outer end of the positioning rod 34 in a manner of moving left and right, the fourth return spring 46 is connected between the latch 35 and the groove, the latch 35 moves left to extend out of the groove, and the latch 35 moves right to retract into the groove.

In a further improved embodiment, the restoring assembly includes a horizontal pushing spring 23 and a plane bearing 22, the plane bearing 22 is connected to the right end of the rotating sleeve 36, and the horizontal pushing spring 23 is connected between the plane bearing 22 and the pump cover 20.

The starting process of the invention is as follows: the motor 26 is started to drive the pump shaft 37 to rotate, the pump shaft 37 drives the impeller 4 and the rotary sleeve 36 to rotate, due to the guiding action of the guide cushion block 44, the positioning rod 34 enters the spiral groove 19 from the flat groove 45 along the inclined guide surface 47 of the guide cushion block 44 to move, the rotary sleeve 36 rotates and moves rightwards, the transverse pushing spring 23 compresses, the left side of the rotary sleeve 36 forms a suction cavity 25, air in the water suction pipe, the inlet cavity 2, the worm cavity and the outlet cavity 7 enters the suction cavity 25 through the one-way air inlet valve 5, when the positioning rod 34 reaches the rightmost end of the spiral groove 19 and is separated from the spiral groove 19 along the arc inclined surface 15, the latch 35 moves leftwards under the action of the fourth return spring 46, the latch 35 is clamped on the inner circle of the rotary sleeve 36, meanwhile, the rotary sleeve 36 moves leftwards under the action of the transverse pushing spring 23, the suction cavity 25 is reduced, the air in the suction cavity 25 is discharged to the outside through the one-way exhaust valve 38, the latch 35 moves rightwards under the action of the left side wall of the limiting opening 32, limiting is removed, and the positioning rod 34 extends into the flat groove 45; because the rotary sleeve 36 rotates along with the pump shaft 37, the next circulation movement is carried out, when the air in the suction pipe, the inlet cavity 2, the volute cavity and the outlet cavity 7 is sucked out and is filled with liquid medium, the liquid medium in the outlet cavity 7 enters the liquid inlet cavity 9 through the liquid inlet hole 8 and pushes the push plate 10 to move rightwards, the liquid medium in the pump is discharged outwards, at the moment, the transverse push rod 12 moves rightwards and drives the vertical push rod 14 to rotate, the switching column 16 to rotate, simultaneously drives the rotary rod 43 to rotate and then drives the guide cushion block 44 to rotate anticlockwise, gear and rack transmission is formed between the transverse push rod 12 and the vertical push rod 14, helical gear transmission is formed between the lower end of the switching column 16 and the rotary rod 43, when the rotary sleeve 36 moves rightwards, the push rod, the round sleeve 18 and the clamping rod 17 are driven to move rightwards, when the rotary sleeve 36 moves leftwards, the push rod 27, the round sleeve 18 and the clamping rod 17 move leftwards under the action, when the liquid inlet cavity 9 is filled with liquid and the rotating sleeve 36 has not pushed the clamping rod 17 to be completely separated from the anti-rotation surface 48 of the switching column 16, the horizontal push rod 12 cannot drive the vertical push rod 14 to rotate, and further cannot drive the guide cushion block 44 to rotate, only when the rotating sleeve 36 moves rightwards to a certain position, and the clamping rod 17 is pushed to be completely separated from the anti-rotation surface 48 of the switching column 16, the medium in the liquid inlet cavity 9 can push the push plate 10 and the horizontal push rod 12 to move rightwards, and further drive the guide cushion block 44 to rotate anticlockwise, that is, when the guide cushion block 44 rotates, the rotating sleeve 36 is on the right side, and the positioning rod 34 cannot collide with the guide cushion block 44 when rotating along with the rotating sleeve 36. ) When the guide cushion block 44 rotates anticlockwise until the guide surface of the guide cushion block contacts the side surface of the spiral groove 19, the guide cushion block 44 stops rotating, the rotary sleeve 36 moves leftwards to the leftmost side under the action of the transverse pushing spring 23, the positioning rod 34 always moves along the flat groove 45 when rotating along with the rotary sleeve 36, the positioning rod 34 cannot enter the spiral groove 19, the rotary sleeve 36 cannot be driven to move rightwards, the left side of the rotary sleeve 36 cannot form the air suction cavity 25, meanwhile, under the action of the leakage-proof ring 41, the liquid medium in the pump cannot flow outwards through the one-way exhaust valve 38, and at the moment, under the action of the third return spring 27, the left end part of the clamping rod 17 abuts against the outer circle of the switching column 16.

The shutdown process of the invention: the motor 26 is turned off, the pump shaft 37 and the rotating sleeve 36 stop rotating, liquid in the liquid inlet cavity 9 is discharged to the outlet cavity 7 through the liquid inlet hole 8, the push plate 10 moves leftwards under the action of the second reset spring 11 and drives the vertical push rod 14 to rotate and the switching column 16 to rotate, meanwhile, the rotating rod 43 is driven to rotate and then drives the guide cushion block 44 to rotate clockwise, the left end face of the guide cushion block 44 tightly props against the left side face of the flat groove 45, the inclined guide face 47 at the right end of the guide cushion block 44 can guide the positioning rod 34 to enter the spiral groove 19, at the moment, the rotating sleeve 36 is located at the leftmost end, and the outer end of the positioning rod 34 is located.

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 a water pump, including the pump body, pump cover, impeller, pump shaft and motor, be equipped with the outlet chamber of pump chamber and the left import chamber of intercommunication pump chamber and intercommunication pump chamber upside in the pump body, the impeller is joined in marriage in the pump chamber, the pump cover is located on the opening of pump body right side, the pump shaft is rotatable to be worn to locate on the pump cover, and pump shaft left end links to each other with the impeller transmission, and the pump shaft right-hand member links to each other its characterized in that with motor drive: the pump cover is internally provided with a rotating sleeve and a control sleeve, the rotating sleeve can be sleeved on the pump shaft in a linkage manner, the control sleeve is sleeved on the rotating sleeve, the control sleeve is fixedly connected with the pump cover, an axial driving structure is arranged between the control sleeve and the rotating sleeve, the rotating sleeve can axially reciprocate between the pump shaft and the control sleeve, the rotating sleeve is provided with a resetting component, the left end of the rotating sleeve is respectively and hermetically attached to the pump shaft and the control sleeve, when the rotating sleeve moves rightwards, the left side of the rotating sleeve forms an air suction cavity, the corresponding left side surface of the pump cover is provided with a one-way air inlet valve and a one-way exhaust valve, the one-way air inlet valve is communicated with the; the axial driving structure comprises a spiral groove arranged on the inner circle of the control sleeve and a positioning rod radially penetrating the rotating sleeve, the positioning rod can be radially movably arranged and is provided with a first return spring, when the outer end of the positioning rod extends out of the rotating sleeve, the positioning rod is in transmission fit with the spiral groove, the left end of the spiral groove is provided with the flat groove, the flat groove is selectively connected with the spiral groove through the guide cushion block which is arranged in a rotating way, the guide cushion block is provided with a switching mechanism, the right end of the spiral groove is provided with an arc inclined plane which drives the positioning rod to retract into the rotating sleeve, when the outer end of the positioning rod retracts into the rotating sleeve, the inner end of the positioning rod extends into the rotary sleeve and is arranged in a limit opening arranged on the excircle of the pump shaft, the upper end of the corresponding positioning rod is provided with a clamping part, the clamping part is in limit fit with the inner circle of the rotary sleeve, and the clamping limiting matching of the clamping component and the left side wall of the limiting opening is removed, and the left side wall of the limiting opening corresponds to the flat groove.

2. The water pump of claim 1, wherein: the switching mechanism comprises a liquid inlet cavity, a push plate, a transverse push rod and an adjusting box, wherein the liquid inlet cavity is positioned on the right side of the outlet cavity, the liquid inlet cavity is communicated with the outlet cavity, the push plate can be arranged in the liquid inlet cavity in a left-and-right mode, the push plate is provided with a second reset spring in a matched mode, the left end of the transverse push rod extends into the liquid inlet cavity to be connected with the push plate, the right end of the transverse push rod extends into the adjusting box, the adjusting box is internally and rotatably provided with a vertical push rod, a switching column and a rotating rod, the lower end of the vertical push rod is fixedly connected with the upper end of the switching column, gear and rack transmission is formed between the transverse push rod and the vertical push rod, helical gear transmission is formed between the lower end of the switching column and the horizontally arranged rotating rod, one end of the rotating rod extends into the pump cover to be connected with a guide cushion block, a clamping rod, the right end of the round sleeve is connected with a push rod, and the lower end of the push rod extends into the pump cover to be in transmission fit with the right end of the rotary sleeve.

3. The water pump of claim 1, wherein: the clamping part comprises a clamping tooth and a fourth reset spring, the clamping tooth can move left and right and is arranged in a groove in the left side face of the outer end of the positioning rod, and the fourth reset spring is connected between the clamping tooth and the groove.

4. The water pump of claim 1, wherein: the reset assembly comprises a horizontal push spring and a plane bearing, the plane bearing is connected to the right end of the rotating sleeve, and the horizontal push spring is connected between the plane bearing and the pump cover.