CN111120339A - Horizontal water pump - Google Patents

Abstract

The invention provides a horizontal water pump, comprising: a base; the power motor is fixedly connected to the upper surface of the base, and a water pump shell is arranged at one end of the power motor, which is provided with an output shaft; the water pump shell is of a cavity shell structure and is hermetically connected with the end part of the power motor, and a water inlet and a water outlet are formed on the water pump shell; the impeller is arranged in the water pump shell and is coaxially and rotatably connected with an output shaft arranged in the water pump shell. The rotary output shaft is arranged in the inner cavity of the water pump shell in a built-in mode, so that liquid can be conveyed, the rotary output shaft can be protected, operation accidents can be effectively prevented, the damage to the output shaft can be avoided, and the service life of the rotary output shaft is prolonged.

Description

Horizontal water pump

Technical Field

The invention relates to the technical field of water pumps, in particular to a horizontal water pump.

Background

Water pumps are machines that deliver or pressurize a liquid. The mechanical energy or other external energy of the prime motor is transmitted to the liquid, so that the energy of the liquid is increased, the liquid is mainly used for conveying the liquid, and the water pump is widely applied to the living fields of agriculture, production and the like. Need use powerful water pump under occasion a bit, work, just so need use the more powerful motor drive pump body, usually speaking, powerful motor is mostly horizontal, easy to assemble, and the during operation is stable. And the chassis of the horizontal water pump is directly contacted with the ground, so that the stability is extremely high.

The structure of the common horizontal water pump at present is that an output shaft of a motor is in transmission connection with an impeller of a pump body so as to achieve the purpose of conveying water flow. Because the rotation output shaft of motor is in the external environment and does not have effective safeguard measure, suffer damage and cause the incident very easily in the in-service use.

Disclosure of Invention

The invention aims to provide a horizontal water pump to solve the technical problem.

In order to achieve the purpose, the invention provides the following technical scheme: a horizontal water pump comprising:

a base;

the power motor is fixedly connected to the upper surface of the base, and a water pump shell is arranged at one end of the power motor, which is provided with an output shaft;

the water pump shell is of a cavity shell structure and is hermetically connected with the end part of the power motor, and a water inlet and a water outlet are formed on the water pump shell;

the impeller is arranged in the water pump shell and is coaxially and rotatably connected with an output shaft arranged in the water pump shell.

As an improvement of the invention, the water pump shell is divided into two parts of a water inlet pipe and a water outlet pipe,

one end of the water inlet pipe is opened to form a water inlet, and the other end of the water inlet pipe is provided with a water inlet hole and is hermetically connected with the water outlet pipe;

and the water outlet pipe is connected with one end of the water inlet pipe in a sealing manner and the end part of the power motor, and a water outlet is formed in the side wall of the water outlet pipe.

As an improvement of the invention, the inner cavity of the water outlet pipe is divided into two communicated vortex cavities and drainage cavities by an integrally formed flange plate;

the impeller is arranged in the vortex cavity;

and the water outlet is formed on the side wall of the drainage cavity.

As an improvement of the invention, the water inlet pipe and the water outlet pipe are in sealed connection, a sleeve female cavity is arranged at the connecting end part of the water inlet pipe, a sleeve male head is arranged at the connecting end part of the water outlet pipe, and a sealing rubber ring is arranged at the veneering part of the sleeve female cavity and the sleeve male head.

As an improvement of the invention, the water outlet pipe is connected with the power motor in a sealing way through a flange plate.

As an improvement of the present invention, an impeller guard system is further provided, the impeller guard system comprising:

the water inlet pipe is coaxially and fixedly provided with a water guide pipe inside, the outer diameter of the water guide pipe is equal to the diameter of the water inlet hole, and a space defined by the outer wall of the water guide pipe and the inner wall of the water inlet pipe is set as an accommodating cavity;

the water inlet end surface of the water inlet pipe is provided with a first spring baffle groove, and the first spring baffle groove horizontally faces to the inside of the water inlet pipe;

the sliding ring is arranged in the accommodating cavity and is connected to the inner wall of the water inlet pipe in a sliding manner, a second spring retaining groove is formed in the end face, facing the first spring retaining groove, of the sliding ring, and a return spring is arranged between the first spring retaining groove and the second spring retaining groove;

the return spring is sleeved on the outer peripheral surface of the water guide pipe, one end of the return spring is attached to the inner wall of the first spring retaining groove, and the other end of the return spring is attached to the inner wall of the second spring retaining groove;

the driving ring is arranged on one side of the slip ring, which is far away from the return spring, and is in contact fit with the slip ring, the end surface of the driving ring, which is in contact with the slip ring, is in a wave structure, and the driving ring and the slip ring are switched between the states of the farthest distance and the nearest distance under the action of the wave end surface;

the outer peripheral surface of the water guide pipe is also provided with an inner tooth rotating ring in a rotating mode through a bearing, a one-way coaxial device is arranged between the outer peripheral surface of the inner tooth rotating ring and the driving ring, the inner wall of the inner tooth rotating ring is provided with an inner tooth surface, and the inner tooth surface is meshed with the transmission gear on the output shaft;

the oil injection device is characterized in that an annular oil injection cavity is further arranged in the pipe wall of the water guide pipe, an elastic diaphragm is fixedly connected to the end face, which is in contact with the annular oil injection cavity, of the driving ring, the elastic diaphragm covers the cross section of the annular oil injection cavity, the annular oil injection cavity is further communicated with a first one-way valve and a second one-way valve, the first one-way valve is communicated with an external oil tank and only allows lubricating oil to flow in the direction of entering the annular oil injection cavity, and the second one-way valve is communicated with the oil injection pipeline and only allows the lubricating oil to flow in the direction of flowing out of the annular oil injection cavity;

and the end part of the oil injection pipeline injects lubricating oil into a connecting groove between the impeller and the output shaft through an oil brush.

As an improvement of the present invention, the unidirectional coaxial apparatus comprises:

the part of the outer peripheral surface of the inner tooth rotating ring, which is contacted with the driving ring, is provided with a plurality of uniformly distributed wedge-shaped notches;

the inner wall of the driving ring is hinged with a plurality of synchronizing blocks at the contact part of the inner tooth rotating ring, the synchronizing blocks are matched with the wedge-shaped notches, and the end parts of the synchronizing blocks are abutted against the inner walls of the wedge-shaped notches.

The improved power supply device is characterized by further comprising a storage battery for supplying power to the power motor, wherein the storage battery comprises a detection circuit and a rectification circuit respectively;

the detection circuit comprises a detection circuit and a first comparator U1, wherein the detection circuit comprises a terminal C and a terminal D, the terminal C is connected with an external storage battery anode output end, the terminal D is connected with an external storage battery cathode output end, the terminal C comprises a first inductor L1, a first resistor R1 and a terminal A which are sequentially connected in series, the terminal D is connected with an analog ground, a first node and a second node between the first inductor L1 and the first resistor R1 are respectively connected with a second capacitor C2 and a third capacitor C3 in series to be grounded, the detection circuit further comprises the first comparator U1, a forward input end of the first comparator U1 is connected with a node between the first resistor R1 and a first inductor L1, a reverse input end of the first comparator U1 is connected with a node between the first resistor R1 and the terminal A, an output end of the first comparator U1 is connected with a third resistor R3 in series to be grounded, and an output end of the first comparator U1 and a third resistor R3 are connected with a second triode 1 in series, an emitting electrode of the first triode Q1 is grounded, a collector electrode of the first triode Q1 is connected with the processor, and a connecting node of the collector electrode and the processor is connected with the fourth capacitor in series and grounded;

the processor is connected with an alarm device, and when the first driving triode is conducted, the processor receives an electric signal to control the alarm device to remind;

the rectifying circuit is positioned between the detection circuit and the storage battery and is used for filtering the current output by the storage battery, wherein the rectifying circuit comprises an end point E and an end point F, the end point E and the end point F are respectively connected with the positive pole and the negative pole of the storage battery, the end point E and the end point F are connected through a first rectifying capacitor C1, the end point E is connected with a first rectifying triode Q11 and a first rectifying resistor R11 in series and grounded, the end point E is connected with the emitting electrode of a second rectifying triode Q12, the base stage of the second rectifying triode Q12 is connected with the base stage of a first rectifying triode Q11, the connecting node of a first rectifying triode Q11 and a second rectifying triode Q12 is connected with a third rectifying triode Q11 and a third rectifying resistor R13 respectively, the base stage of the third rectifying triode Q11 is connected with the collector electrode of the first rectifying triode Q11, the collector electrode of the second rectifying triode Q12 and the node of a first rectifying inductor L1 are connected with a second rectifying resistor R12 and a second capacitor C12 in series, a node of the first rectifying inductor L1 connected to the second rectifying transistor Q12 is connected to the first rectifying diode D11, the first rectifying inductor L1 is grounded to the ground through the third rectifying capacitor C13, the first rectifying inductor L1 is connected to the ground through the fourth rectifying resistor R14 and the second rectifying diode D12, a node of the fourth rectifying resistor R14 and the second rectifying diode D12 is connected to an emitter of the fourth rectifying transistor Q14, a collector of the fourth rectifying transistor Q14 is connected to the third rectifying resistor R13, a base of the fourth rectifying transistor Q14 is connected to the sixth rectifying resistor R16 having a variable resistance function, the sixth rectifying resistor R16 is connected to the fifth rectifying resistor R15 and the seventh rectifying resistor R17, the seventh rectifying resistor R17 is connected to the output terminal H, the fifth rectifying resistor R15 is connected to the output terminal G, the output terminal H is connected to the input terminal C, and the output terminal G is connected to the input terminal D.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of a water pump housing according to the present invention;

FIG. 4 is a schematic structural view of the impeller containment system of the present invention;

FIG. 5 is an enlarged schematic view of FIG. 4 at A;

FIG. 6 is a cross-sectional view of FIG. 4 at B-B;

FIG. 7 is a cross-sectional view of FIG. 4 at C-C;

FIG. 8 is a wave end view of the slip ring and drive ring of the present invention;

FIG. 9 is a schematic structural view of a one-way coaxial coupling of the present invention;

FIG. 10 is a control circuit diagram of the present invention;

fig. 11 is another control circuit diagram of the present invention.

The components in the figure are:

10-a base, wherein the base is provided with a plurality of grooves,

20-a power motor, 21-an output shaft,

30-water pump shell, 31-water inlet, 32-water outlet, 33-water inlet pipe, 33.1-sleeved female cavity, 34-water outlet pipe, 34.1-sleeved male head, 35-water inlet hole, 36-edge plate, 37-vortex cavity, 38-water discharge cavity,

40-an impeller, wherein the impeller is arranged on the impeller,

50-a sealing rubber ring is arranged on the upper surface of the rubber ring,

60-a flange plate, wherein the flange plate is provided with a flange plate,

70-impeller guard system, 71-water conduit, 72-accommodation cavity, 73-first spring catch groove, 74-slip ring, 75-second spring catch groove, 76-return spring, 77-drive ring, 78-internal gear swivel, 79-drive gear,

80-one-way coaxial, 81-wedge notch, 82-synchronization block,

90-oiling device, 91-annular oiling chamber, 92-elastic diaphragm, 93-first one-way valve, 94-second one-way valve, 95-oiling pipeline and 96-oil brush.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1, a horizontal water pump includes:

a base 10;

the power motor 20 is fixedly connected to the upper surface of the base 10, and a water pump shell 30 is arranged at one end of the power motor, which is provided with an output shaft 21;

the water pump shell 30 is of a hollow shell structure and is hermetically connected with the end part of the power motor 20, and a water inlet 31 and a water outlet 32 are formed in the water pump shell 30;

the impeller 40 is further arranged inside the water pump shell 30, and the impeller 40 is coaxially and rotatably connected with the output shaft 21 arranged in the water pump shell 30.

The working principle of the technical scheme is as follows: the water pump is used for transporting other liquid of water cargos to a designated place, and the transportation power of the common water pump is provided by the motor which drives the rotary impeller to rotate. The rotating output shaft of the motor poses certain risks during the powering process and is also easily damaged. In order to avoid the phenomenon, one end of the output shaft of the power motor 20 is hermetically connected with the water pump shell 30, and the output shaft 21 extends into the inner cavity of the water pump shell 30 to participate in the conveying of water or other liquid materials, so that the danger caused by the fact that the output shaft 21 is exposed outside is prevented, and the damage to the output shaft in the rotating process is effectively avoided.

The beneficial effects of the above technical scheme are that: the rotary output shaft is arranged in the inner cavity of the water pump shell in a built-in mode, so that liquid can be conveyed, the rotary output shaft can be protected, operation accidents can be effectively prevented, the damage to the output shaft can be avoided, and the service life of the rotary output shaft is prolonged.

Referring to fig. 2 and 3, in one embodiment of the present invention, the water pump housing 30 is divided into two parts of a water inlet pipe 33 and a water outlet pipe 34,

one end of the water inlet pipe 33 is opened to form a water inlet 31, and the other end of the water inlet pipe is provided with a water inlet hole 35 and is hermetically connected with the water outlet pipe 34;

and one end of the water outlet pipe 34, which is far away from the water inlet pipe 33, is hermetically connected with the end part of the power motor 20, and a water outlet 32 is formed in the side wall of the water outlet pipe 34.

The inner cavity of the water outlet pipe 34 is divided into two communicated vortex cavities 37 and a drainage cavity 38 by an integrally formed flange plate 36;

a scroll chamber 37, the impeller 40 being disposed inside the scroll chamber 37;

a drain chamber 38, the water outlet 32 being formed at a side wall of the drain chamber 38.

The working principle and the beneficial effects of the technical scheme are as follows: when the horizontal water pump conveys liquid, the rotation of the impeller 40 can cause vortex rotational flow near the water inlet 31, and a small part of air is sometimes introduced into the inner cavity of the water pump shell 30 under the action of the rotational flow, so that the small part of air and the liquid are mutually agitated, and the internal components of the horizontal water pump are easily damaged. Consequently divide water pump housing 30 into inlet tube 33 and outlet pipe 34, liquid at first gets into in the inlet tube 33 behind water inlet 31, play certain cushioning effect in the tube length of inlet tube 33, then get into vortex chamber 37 through the inlet hole 35 in, the fringed plate 36 can be isolated with the vortex liquid stream that vortex chamber 37 formed at this in-process, make the unable whirl that forms of liquid stream of inlet tube 33, thereby the inner chamber of air admission water pump housing 30 has been avoided, ensure that the water pump can not be because of the mixed damage that surges of air liquid stream and suffer.

Referring to fig. 2 and 3, in an embodiment of the present invention, the water inlet pipe 33 and the water outlet pipe 34 are in sealed connection, a sleeve female cavity 33.1 is disposed at a connection end portion of the water inlet pipe 33, a sleeve male head 34.1 is disposed at a connection end portion of the water outlet pipe 34, and a sealing rubber ring 50 is disposed at a facing portion between the sleeve female cavity 33.1 and the sleeve male head 34.1.

The water outlet pipe 33 is hermetically connected with the power motor 20 through a flange plate 60.

The working principle and the beneficial effects of the technical scheme are as follows: the connection mode between the water inlet pipe 33 and the water outlet pipe 34 and the connection mode between the water outlet pipe 33 and the power motor 20 are both used for ensuring the sealing performance of the water pump and avoiding leakage in the process of conveying liquid.

Referring to fig. 4-8, in one embodiment of the present invention, an impeller guard system 70 is also provided, the impeller guard system 70 comprising:

the water guide pipe 71 is coaxially and fixedly arranged inside the water inlet pipe 33, the outer diameter of the water guide pipe 71 is equal to the diameter of the water inlet hole 35, and a space defined by the outer wall of the water guide pipe 71 and the inner wall of the water inlet pipe 33 is set as an accommodating cavity 72;

the water inlet end surface of the water inlet pipe 33 is provided with a first spring baffle groove 73, and the first spring baffle groove 73 horizontally faces to the inside of the water inlet pipe 33;

a slide ring 74 disposed in the receiving cavity 72 and slidably connected to the inner wall of the water inlet pipe 33, wherein a second spring stop groove 75 is formed on an end surface of the slide ring 74 facing the first spring stop groove 73, and a return spring 76 is disposed between the first spring stop groove 73 and the second spring stop groove 75;

a return spring 76 sleeved on the outer circumferential surface of the water conduit 71, wherein one end of the return spring 76 is attached to the inner wall of the first spring retaining groove 73, and the other end is attached to the inner wall of the second spring retaining groove 75;

a driving ring 77 is further rotatably arranged on the outer peripheral surface of the water conduit 71, the driving ring 77 is arranged on one side of the slip ring 74 far away from the return spring 76, the driving ring 77 is in contact fit with the slip ring 74, the end surface of the driving ring 77 in contact with the slip ring 74 is in a wave structure, and the driving ring 77 and the slip ring 74 are switched between the states of the farthest distance and the closest distance under the action of the wave end surfaces;

the outer peripheral surface of the water guide pipe 71 is further provided with an inner-tooth rotating ring 78 in a rotating mode through a bearing, a one-way coaxial device 80 is arranged between the outer peripheral surface of the inner-tooth rotating ring 78 and the driving ring 77, the inner wall of the inner-tooth rotating ring 78 is provided with an inner tooth surface, and the inner tooth surface is meshed with the transmission gear 79 on the output shaft 21; here, in order to avoid the meshing structure of the transmission gear 79 and the internal gear swivel 78 from being placed in the liquid, a certain section of the water conduit 71 is provided with a notch, that is, the section of the water conduit 71 at a certain section of the transmission gear 79 is in a circular arc shape (as shown in fig. 6);

the oil injection device 90 is characterized in that an annular oil injection cavity 91 is further formed in the pipe wall of the water guide pipe 71, an elastic membrane 92 is fixedly connected to the end face, in contact with the annular oil injection cavity 91, of the driving ring 77, the elastic membrane 92 covers the cross section of the annular oil injection cavity 91, the annular oil injection cavity 91 is further communicated with a first one-way valve 93 and a second one-way valve 94, the first one-way valve 93 is communicated with an external oil tank and only allows lubricating oil to flow in the direction of entering the annular oil injection cavity 91, and the second one-way valve 94 is communicated with the oil injection pipeline 95 and only allows the lubricating oil to flow in the direction of flowing out of the annular oil injection cavity 91;

and an oil injection pipeline 95 is formed on the pipe walls of the water inlet pipe 33 and the water outlet pipe 34 and communicated with each other, and lubricating oil is injected into a connecting groove between the impeller 40 and the output shaft 21 through an oil brush 96 at the end part of the oil injection pipeline 95.

The one-way coaxial connector 80 includes:

a plurality of uniformly distributed wedge-shaped notches 81 are formed in the outer peripheral surface of the inner tooth rotating ring 78 at the contact part with the driving ring 77;

and the inner wall of the driving ring 77 is hinged with a plurality of synchronizing blocks 82 at the contact part with the inner tooth rotating ring 78, the synchronizing blocks 82 are matched with the wedge-shaped notches 81, and the end parts of the synchronizing blocks 82 abut against the inner wall of the wedge-shaped notches 81.

The working principle of the technical scheme is as follows: because the water pump works in a humid environment for a long time, particularly the structure that the output shaft is arranged inside the water pump shell 30 provided by the invention makes the friction between the transmission components more easily increased due to corrosion, the transmission efficiency between the transmission components is reduced, and even the service life of the whole water pump is shortened. Therefore, the lubricating effect between the transmission components can be continuously maintained to avoid the phenomenon, but because the output shaft of the water pump provided by the invention is arranged in the water pump shell 30, the whole shell needs to be disassembled when lubricating oil needs to be injected, the lubricating oil needs to be frequently injected to continuously maintain the lubricating effect between the transmission components, and a baby needs to frequently disassemble the whole shell. The maintenance mode is not only complicated in operation, but also greatly increases the probability of machine damage. Therefore, a set of impeller protection system 70 is designed on the basis of the structure, the impeller protection system 70 can inject lubricating oil between the transmission components on the premise that the normal operation of the water pump is not influenced by the water pump, the injection action does not need to disassemble the shell of the water pump, and the purpose of injecting the lubricating oil between the transmission components can be completed only by stopping the conveying work of the water pump and executing a reverse rotation instruction. Namely, the whole water pump has two working states: the working state of pumping water and the overall maintenance state.

The working state of pumping water: when the water pump is in a water pumping working state, the power motor 20 drives the output shaft 21 to rotate clockwise, and at the moment, the output shaft 21 drives the impeller 40 to rotate, so that the liquid introduced through the water guide pipe 71 is led out from the water outlet 32. At this time, the transmission gear 79 at the left end of the impeller 40 (here, the left end is the left end shown in fig. 4) is engaged to rotate the internally toothed rotating ring 78, and the driving ring 77 does not rotate along with it due to the special structure of the one-way coaxial coupling 80. In this state, the water pump operates only the working parts that pump water.

Overall maintenance state: after the water pump works for a period of time, the whole fatigue operation can occur, on one hand, mechanical inertia can be formed on each part and the matching part between the parts after long-time operation, and the abrasion of a mechanical structure can be accelerated when the water pump works for a long time under the operation mode of the mechanical inertia. On the other hand, in the long-time water pumping process, a layer of rust film is inevitably formed on the inner wall of the pump body, and at the corner of the pump body and at the gap where the structure is matched and connected with the structure, micro particles carried by water in the water pumping process often exist and are retained in the pump body, if the micro particles cannot be removed, the abrasion of a transmission structure is often aggravated, and the micro particles can generate certain vibration to increase the noise of the pump body during working. Furthermore, after the water pump is operated for a period of time, lubricating grease at the transmission part of the power motor 20 driving output shaft 21 is inevitably reduced, and the transmission efficiency of the power motor 20 is affected. In order to address the above, the present embodiment provides an overall maintenance device.

The lubrication effect at the transmission site is reduced: the power motor 20 drives the output shaft 21 to rotate counterclockwise, the impeller 40 also rotates in the opposite direction, the impeller 40 in this rotating state can not suck liquid from the water inlet 31, so the inside of the water pump is in a cavity state, because the output shaft 21 rotates in the opposite direction, it drives the transmission gear 79 to also drive the internal tooth rotating ring 78 to rotate in the opposite direction, at this time, the driving ring 77 also rotates under the action of the one-way coaxial device 80, during the rotation of the driving ring 77, the slip ring 74 which is matched with the wavy end surface of the driving ring 77 slides transversely (i.e. the driving ring is switched between two states of being far away from and being close to the driving ring 77), when the slip ring 74 is far away from the driving ring 77, the slip ring 74 slides leftwards (left end in fig. 4), at this time, the slip ring 74 also drives the. When the elastic diaphragm 92 slides leftward, the volume of the annular oil filling cavity becomes larger and the hydraulic pressure becomes smaller, so that the lubricating oil is sucked from the external oil tank through the first check valve. When slide ring 74 approaches drive ring 77, slide ring 74 slides rightward (to the right in fig. 4) by the resilient force of return spring 76, and slide ring 74 slides rightward with elastic diaphragm 92. When the elastic diaphragm 92 slides to the right, the volume of the annular oil filling chamber becomes smaller and the hydraulic pressure becomes larger, so that the lubricating oil is filled into the oil filling pipe 95 through the second check valve, and the lubricating oil is filled into the connecting groove of the transmission member under the action of the oil brush 96.

For mechanical inertia and wear of small particles: in the process of turning over the power motor 20, the impeller 40 forms a reverse airflow in the inner cavity of the pump body, which enters from the water outlet and flows out from the water inlet, at this time, a set of air heating device can be additionally arranged at the water outlet, in addition, regular vibration waves can be generated when the slip ring 74 rapidly slides to the driving ring 77 from the position farthest away from the driving ring 77, the intensity of the vibration waves is determined by the rotating speed of the driving motor, the vibration waves form a resonance phenomenon with the components of the pump body in the cavity, under the resonance effect, the tiny particles can gradually vibrate out from the connecting gap between the components and flow out along with the reverse airflow, and the rust film on the inner wall of the pump body can also fall off under the effect of the vibration waves. For mechanical inertia, under the oscillation action formed by the sliding ring 74 and the driving ring 77, the contact position between parts can be changed so as to break the mechanical inertia formed by long-time fixed mode work, for example, the sliding at the axial connection position and the transfer at the radial connection position can both break the formed mechanical inertia, so that the pump body can be uniformly worn, and the service life of the pump body can be prolonged to a great extent. Wherein, the theory of operation of one-way coaxial ware is: as shown in fig. 7, when the rotation direction of the internal-tooth rotating ring 78 is clockwise in fig. 7, the synchronizing block 82 abuts on the side wall of the wedge-shaped notch 81, and the internal-tooth rotating ring 78 at the inner ring drives the driving ring at the outer ring to rotate; when the rotation direction of the internal-tooth rotating ring 78 is counterclockwise in fig. 7, under the action of the inclined wall of the wedge-shaped notch 81, the synchronizing block 82 rotates to the driving ring 77 of the outer ring, and at this time, the internal-tooth rotating ring 78 of the inner ring cannot drive the driving ring 77 of the outer ring to rotate, so that the one-way coaxial effect of the one-way coaxial device is realized.

Referring to fig. 9 and 10, as an improvement of the present invention, the present invention further includes a storage battery for supplying power to the power motor, where the storage battery includes a detection circuit and a rectification circuit respectively;

the detection circuit comprises a detection circuit and a first comparator U1, wherein the detection circuit comprises a terminal C and a terminal D, the terminal C is connected with an external storage battery anode output end, the terminal D is connected with an external storage battery cathode output end, the terminal C comprises a first inductor L1, a first resistor R1 and a terminal A which are sequentially connected in series, the terminal D is connected with an analog ground, a first node and a second node between the first inductor L1 and the first resistor R1 are respectively connected with a second capacitor C2 and a third capacitor C3 in series to be grounded, the detection circuit further comprises the first comparator U1, a forward input end of the first comparator U1 is connected with a node between the first resistor R1 and a first inductor L1, a reverse input end of the first comparator U1 is connected with a node between the first resistor R1 and the terminal A, an output end of the first comparator U1 is connected with a third resistor R3 in series to be grounded, and an output end of the first comparator U1 and a third resistor R3 are connected with a second triode 1 in series, an emitting electrode of the first triode Q1 is grounded, a collector electrode of the first triode Q1 is connected with the processor, and a connecting node of the collector electrode and the processor is connected with the fourth capacitor in series and grounded;

the processor is connected with an alarm device, and when the first driving triode is conducted, the processor receives an electric signal to control the alarm device to remind;

the rectifying circuit is positioned between the detection circuit and the storage battery and is used for filtering the current output by the storage battery, wherein the rectifying circuit comprises an end point E and an end point F, the end point E and the end point F are respectively connected with the positive pole and the negative pole of the storage battery, the end point E and the end point F are connected through a first rectifying capacitor C1, the end point E is connected with a first rectifying triode Q11 and a first rectifying resistor R11 in series and grounded, the end point E is connected with the emitting electrode of a second rectifying triode Q12, the base stage of the second rectifying triode Q12 is connected with the base stage of a first rectifying triode Q11, the connecting node of a first rectifying triode Q11 and a second rectifying triode Q12 is connected with a third rectifying triode Q11 and a third rectifying resistor R13 respectively, the base stage of the third rectifying triode Q11 is connected with the collector electrode of the first rectifying triode Q11, the collector electrode of the second rectifying triode Q12 and the node of a first rectifying inductor L1 are connected with a second rectifying resistor R12 and a second capacitor C12 in series, a node of the first rectifying inductor L1 connected to the second rectifying transistor Q12 is connected to the first rectifying diode D11, the first rectifying inductor L1 is grounded to the ground through the third rectifying capacitor C13, the first rectifying inductor L1 is connected to the ground through the fourth rectifying resistor R14 and the second rectifying diode D12, a node of the fourth rectifying resistor R14 and the second rectifying diode D12 is connected to an emitter of the fourth rectifying transistor Q14, a collector of the fourth rectifying transistor Q14 is connected to the third rectifying resistor R13, a base of the fourth rectifying transistor Q14 is connected to the sixth rectifying resistor R16 having a variable resistance function, the sixth rectifying resistor R16 is connected to the fifth rectifying resistor R15 and the seventh rectifying resistor R17, the seventh rectifying resistor R17 is connected to the output terminal H, the fifth rectifying resistor R15 is connected to the output terminal G, the output terminal H is connected to the input terminal C, and the output terminal G is connected to the input terminal D.

The effect and principle of the technical scheme are as follows:

the current of the battery is led in through a terminal C, the current of the battery is shunted to the first resistor R1 and the positive input end of the first voltage comparator U1 through the inductor, and the circuit which flows through the first resistor R1 is shunted to the inverting input end of the first voltage comparator U1 and the other branch. And according to the change of the current, the first voltage comparator U1 outputs correspondingly, for example, the current flowing into the battery is too large, because the value of the first resistor R1 is fixed, the voltage difference between two endpoints of the first resistor becomes large, the larger the current flowing into the battery is, the first voltage comparator U1 outputs a high level signal, because the positive input end of the first voltage comparator U1 is larger than the inverted input end of the first voltage comparator U1, then the first voltage comparator outputs the high level signal to the base level of the first triode Q1, the first triode Q1 is turned on, and the processor receives an electric signal to control the alarm device to alarm. The detection circuit provided by the invention has a simple structure, saves the area of a robot integrated with a PCB, has low power consumption, extremely small heat productivity and high sensitivity, improves the safety performance of the detection circuit, and can respond to the current change well.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (8)

1. A horizontal water pump, comprising:

a base (10);

the power motor (20) is fixedly connected to the upper surface of the base (10), and a water pump shell (30) is arranged at one end of the power motor, which is provided with an output shaft (21);

the water pump shell (30) is of a hollow cavity shell structure and is in sealed connection with the end part of the power motor (20), and a water inlet (31) and a water outlet (32) are formed in the water pump shell (30);

the impeller (40) is further arranged inside the water pump shell (30), and the impeller (40) is coaxially and rotatably connected with an output shaft (21) arranged in the water pump shell (30) in a built-in mode.

2. The horizontal water pump according to claim 1, wherein: the water pump shell (30) is divided into a water inlet pipe (33) and a water outlet pipe (34),

one end of the water inlet pipe (33) is opened to form a water inlet (31), and the other end of the water inlet pipe is provided with a water inlet hole (35) and is hermetically connected with the water outlet pipe (34);

the water outlet pipe (34) is far away from one end of the water inlet pipe (33) and is connected with the end part of the power motor (20) in a sealing mode, and a water outlet (32) is formed in the side wall of the water outlet pipe (34).

3. The horizontal water pump according to claim 2, wherein: the inner cavity of the water outlet pipe (34) is divided into two communicated vortex cavities (37) and a drainage cavity (38) by an integrally formed flange plate (36);

a scroll chamber (37), the impeller (40) being disposed inside the scroll chamber (37);

a drain chamber (38), the water outlet (32) being formed in a side wall of the drain chamber (38).

4. The horizontal water pump according to claim 2, wherein: be sealing connection between inlet tube (33) and outlet pipe (34), the coupling end portion of inlet tube (33) is equipped with cup joints female chamber (33.1), the coupling end portion of outlet pipe (34) is equipped with cup joints public head (34.1), the wainscot department of cup jointing female chamber (33.1) and cup jointing public head (34.1) is provided with sealed rubber ring (50).

5. The horizontal water pump according to claim 2, wherein: the water outlet pipe (33) is connected with the power motor (20) in a sealing mode through a flange plate (60).

6. The horizontal water pump according to claim 3, wherein: an impeller guard system (70) is also provided, the impeller guard system (70) comprising:

the water inlet pipe (33) is coaxially and fixedly provided with a water guide pipe (71), the outer diameter of the water guide pipe (71) is equal to the diameter of the water inlet hole (35), and a space enclosed by the outer wall of the water guide pipe (71) and the inner wall of the water inlet pipe (33) is set to be an accommodating cavity (72);

the water inlet end surface of the water inlet pipe (33) is provided with a first spring baffle groove (73), and the first spring baffle groove (73) horizontally faces to the inside of the water inlet pipe (33);

the sliding ring (74) is arranged in the accommodating cavity (72) and is connected to the inner wall of the water inlet pipe (33) in a sliding mode, a second spring retaining groove (75) is formed in the end face, facing the first spring retaining groove (73), of the sliding ring (74), and a return spring (76) is arranged between the first spring retaining groove (73) and the second spring retaining groove (75);

the return spring (76) is sleeved on the outer peripheral surface of the water guide pipe (71), one end of the return spring (76) is attached to the inner wall of the first spring blocking groove (73), and the other end of the return spring (76) is attached to the inner wall of the second spring blocking groove (75);

the outer circumferential surface of the water guide pipe (71) is further provided with a driving ring (77) in a rotating mode, the driving ring (77) is arranged on one side, away from the return spring (76), of the sliding ring (74), the driving ring (77) is in contact fit with the sliding ring (74), the end face, in contact with the sliding ring (74), of the driving ring (77) is in a wave structure, and the driving ring (77) and the sliding ring (74) are switched between the state that the distance between the driving ring (77) and the sliding ring is farthest and the state that the distance between the driving ring (77) and the sliding ring is closest;

the outer circumferential surface of the water guide pipe (71) is further provided with an inner-tooth rotating ring (78) in a rotating mode through a bearing, a one-way coaxial device (80) is arranged between the outer circumferential surface of the inner-tooth rotating ring (78) and the driving ring (77), the inner wall of the inner-tooth rotating ring (78) is provided with an inner tooth surface, and the inner tooth surface is meshed with a transmission gear (79) on the output shaft (21);

the oil injection device (90), an annular oil injection cavity (91) is further arranged in the pipe wall of the water guide pipe (71), an elastic membrane (92) is fixedly connected to the end face, which is in contact with the annular oil injection cavity (91), of the driving ring (77), the elastic membrane (92) covers the cross section of the annular oil injection cavity (91), the annular oil injection cavity (91) is further communicated with a first one-way valve (93) and a second one-way valve (94), the first one-way valve (93) is communicated with an external oil tank and only allows lubricating oil to flow in the direction of entering the annular oil injection cavity (91), and the second one-way valve (94) is communicated with an oil injection pipeline (95) and only allows the lubricating oil to flow in the direction of flowing out of the annular oil injection cavity (91);

and the oil injection pipeline (95) is communicated with the pipe walls of the water inlet pipe (33) and the water outlet pipe (34), and lubricating oil is injected into the connecting groove between the impeller (40) and the output shaft (21) through an oil brush (96) at the end part of the oil injection pipeline (95).

7. The horizontal water pump according to claim 6, wherein: the unidirectional coaxiality device (80) comprises:

the outer circumferential surface of the inner tooth rotating ring (78) is provided with a plurality of uniformly distributed wedge-shaped notches (81) at the contact part with the driving ring (77);

the inner wall of the driving ring (77) is hinged to a plurality of synchronizing blocks (82) at the contact part of the inner tooth rotating ring (78), the synchronizing blocks (82) are matched with the wedge-shaped notches (81), and the end parts of the synchronizing blocks (82) abut against the inner wall of the wedge-shaped notches (81).

8. The horizontal water pump according to claim 7, wherein: the device also comprises a storage battery for supplying power to the power motor (20), wherein the storage battery respectively comprises a detection circuit and a rectification circuit;

the detection circuit comprises a detection circuit and a first comparator U1, wherein the detection circuit comprises a terminal C and a terminal D, the terminal C is connected with an external storage battery anode output end, the terminal D is connected with an external storage battery cathode output end, the terminal C comprises a first inductor L1, a first resistor R1 and a terminal A which are sequentially connected in series, the terminal D is connected with an analog ground, a first node and a second node between the first inductor L1 and the first resistor R1 are respectively connected with a second capacitor C2 and a third capacitor C3 in series to be grounded, the detection circuit further comprises the first comparator U1, a forward input end of the first comparator U1 is connected with a node between the first resistor R1 and a first inductor L1, a reverse input end of the first comparator U1 is connected with a node between the first resistor R1 and the terminal A, an output end of the first comparator U1 is connected with a third resistor R3 in series to be grounded, and an output end of the first comparator U1 and a third resistor R3 are connected with a second triode 1 in series, an emitting electrode of the first triode Q1 is grounded, a collector electrode of the first triode Q1 is connected with the processor, and a connecting node of the collector electrode and the processor is connected with the fourth capacitor in series and grounded;

the processor is connected with an alarm device, and when the first driving triode is conducted, the processor receives an electric signal to control the alarm device to remind;

the rectifying circuit is positioned between the detection circuit and the storage battery and is used for filtering the current output by the storage battery, wherein the rectifying circuit comprises an end point E and an end point F, the end point E and the end point F are respectively connected with the positive pole and the negative pole of the storage battery, the end point E and the end point F are connected through a first rectifying capacitor C1, the end point E is connected with a first rectifying triode Q11 and a first rectifying resistor R11 in series and grounded, the end point E is connected with the emitting electrode of a second rectifying triode Q12, the base stage of the second rectifying triode Q12 is connected with the base stage of a first rectifying triode Q11, the connecting node of a first rectifying triode Q11 and a second rectifying triode Q12 is connected with a third rectifying triode Q11 and a third rectifying resistor R13 respectively, the base stage of the third rectifying triode Q11 is connected with the collector electrode of the first rectifying triode Q11, the collector electrode of the second rectifying triode Q12 and the node of a first rectifying inductor L1 are connected with a second rectifying resistor R12 and a second capacitor C12 in series, a node of the first rectifying inductor L1 connected to the second rectifying transistor Q12 is connected to the first rectifying diode D11, the first rectifying inductor L1 is grounded to the ground through the third rectifying capacitor C13, the first rectifying inductor L1 is connected to the ground through the fourth rectifying resistor R14 and the second rectifying diode D12, a node of the fourth rectifying resistor R14 and the second rectifying diode D12 is connected to an emitter of the fourth rectifying transistor Q14, a collector of the fourth rectifying transistor Q14 is connected to the third rectifying resistor R13, a base of the fourth rectifying transistor Q14 is connected to the sixth rectifying resistor R16 having a variable resistance function, the sixth rectifying resistor R16 is connected to the fifth rectifying resistor R15 and the seventh rectifying resistor R17, the seventh rectifying resistor R17 is connected to the output terminal H, the fifth rectifying resistor R15 is connected to the output terminal G, the output terminal H is connected to the input terminal C, and the output terminal G is connected to the input terminal D.

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