CN213235346U

CN213235346U - Water pump

Info

Publication number: CN213235346U
Application number: CN202021955466.4U
Authority: CN
Inventors: 何垣昌
Original assignee: Zhongshan Jinshun Household Wares Co ltd
Current assignee: Zhongshan Jinshun Household Wares Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-18
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a water pump, including supporting shell, piston pump, drive arrangement and drive mechanism, piston pump and drive arrangement install on the supporting shell, drive arrangement includes motor and motor drive's gear change mechanism, gear change mechanism's output shaft passes through drive mechanism drive piston pump, its characterized in that is equipped with a arresting gear who restricts the motor reversal in the drive arrangement. The beneficial effects of the utility model reside in that: the braking device can brake the reverse rotation of the motor, so that the motor can only rotate in the forward direction, the frequency of the forward rotation and the reverse rotation is increased when the motor meets pressure, the phenomenon that the water pumping quantity is unstable is avoided, and the water pumping quantity of the water pump keeps stable.

Description

Water pump

Technical Field

The utility model relates to a water pump.

Background

With the development of water pump technology, the application of water pumps is more and more extensive. In the prior art, the water pump can be applied to pumping water in daily life; can be applied to a steam cleaner to realize the transportation of water and the like. At present, a water pump of an alternating current synchronous motor on the market automatically rotates reversely after being stressed or locked due to the characteristics of the alternating current synchronous motor, and the forward and reverse rotation frequency of a motor is increased when the motor meets pressure, so that the water pumping quantity is unstable, and the stability of the water pumping quantity of the water pump is influenced.

Disclosure of Invention

The utility model aims at providing a water pump, this water pump can brake the motor when the motor reversal, has improved the unstable condition of the volume of drinking water that the motor meets reverse rotation and brings when pressure is too big.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a water pump, its characterized in that, is including supporting shell, piston pump, drive arrangement and drive mechanism, piston pump and drive arrangement install on supporting the shell, drive arrangement includes motor and motor drive's gear change mechanism, gear change mechanism's output shaft passes through drive mechanism drive piston pump, its characterized in that is equipped with a arresting gear who restricts the motor reversal in the drive arrangement.

The brake device comprises a brake auxiliary part, a stop rod and a stop part, wherein the brake auxiliary part is fixed on a motor shaft and can rotate along with the motor shaft, the stop rod is provided with a free end 1) and a fixed end, the fixed end is provided with an elastic clamping device, the elastic clamping device is elastically clamped on one gear shaft of a gear speed change mechanism, the stop part is arranged on a motor shell or a gear speed change mechanism bracket, the brake auxiliary part and the stop part are arranged on a swing path of the free end of the stop rod and are used for limiting the swing amplitude of the stop rod, when the motor is positively transmitted, the free end of the stop rod rotates along with the gear and abuts against the stop part, when the motor is reversely rotated, the free end of the stop rod rotates along with the gear and abuts against the brake auxiliary part, the outer peripheral wall of the brake auxiliary part is provided with an accommodating part capable of accommodating the free end of the stop rod, the accommodating part can accommodate the free end of the stop rod, and when the free end of the stop rod enters the accommodating part, the motor can be prevented from rotating reversely.

The water pump is characterized in that the transmission mechanism comprises an eccentric wheel and a transmission groove, a piston head is arranged at one end of a piston rod of the piston pump, the other end of the piston rod of the piston pump is fixedly connected with the transmission groove, the eccentric wheel is connected with an output shaft of the gear speed change mechanism, the eccentric wheel is arranged in the transmission groove, the eccentric wheel can contact with the groove wall of the transmission groove in the rotation range of the eccentric wheel, and the peripheral wall of the eccentric wheel abuts against the groove wall of the transmission groove to drive the piston head to move axially.

A water pump of the above kind, characterized in that the tee comprises a first end for communication with the inlet pipe, a second end for communication with the outlet pipe and a third end cooperating with the piston head, the piston head being sealingly and slidably arranged within the third end.

The beneficial effects of the utility model reside in that: the braking device can brake the reverse rotation of the motor, so that the motor can only rotate in the forward direction, the frequency of the forward rotation and the reverse rotation is increased when the motor meets pressure, the phenomenon that the water pumping quantity is unstable is avoided, and the water pumping quantity of the water pump keeps stable.

Drawings

Fig. 1 is a schematic structural view of a water pump of the present invention;

FIG. 2 is a schematic exploded view of the state of FIG. 1, wherein the upper support housing is in a separated state;

fig. 3 is a schematic exploded view of the other state of fig. 1, in which the components of the present invention are in a separated state;

fig. 4 is an assembly schematic diagram of the eccentric wheel and the piston rod of the water pump of the present invention;

fig. 5 is a schematic plan view of the water pump of the present invention;

FIG. 6 is a cross-sectional view A-A of FIG. 5, illustrating the water pump in a water-absorbing state;

fig. 7 is a cross-sectional view of the water pump of the present invention, which shows the water pump in a pumping state;

fig. 8 is an exploded perspective view of the driving device of the present invention;

fig. 9 is a schematic view of the gear assembly of the stopper rod and the gear change mechanism of the present invention;

fig. 10 is a perspective view of the stopper rod of the present invention;

fig. 11 is a view showing the engagement of the stopping rod with the braking assistant according to the present invention, showing the driving device in a braking state;

fig. 12 is a state diagram of the brake lever and the brake auxiliary member according to the present invention, showing the driving unit in a brake release state.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

the following is the detailed description of the water pump of the present invention:

referring to fig. 1 to 7, a water pump includes a supporting housing 10, a piston pump, a driving device 3 and a transmission mechanism, the piston pump and the driving device 3 are mounted on the supporting housing, the driving device 3 includes a motor 32 and a gear shifting mechanism 36 driven by the motor, an output shaft 31 of the gear shifting mechanism drives the piston pump through the transmission mechanism, and the water pump is characterized in that a braking device for limiting reverse rotation of the motor is arranged in the driving device 3.

The braking device comprises a braking auxiliary part 33, a stop rod 34 and a stop part 35, the braking auxiliary part is fixed on the motor shaft and can rotate along with the motor shaft, the stop rod is provided with a free end 341 and a fixed end, the fixed end is provided with an elastic clamping device 342, the elastic clamping device is elastically clamped on one gear shaft 361 of the gear speed change mechanism, the stop part is arranged on the motor shell or the gear speed change mechanism bracket, the stop part of the implementation is selectively arranged on the gear speed change mechanism bracket, the braking auxiliary part 33 and the stop part 35 are arranged on the swinging path of the free end of the stop rod and are used for limiting the swinging amplitude of the stop rod 34, when the motor is in forward transmission, the free end of the stop rod 34 rotates along with the gear and abuts against the stop part, and at the moment, the gear shaft 361 continuously rotates by overcoming the clamping force of the elastic clamping device 342, the motor can continue to transmit positively, and the gear speed change mechanism and the whole water pump continue to work; when the motor rotates reversely, the free end of the stop rod 34 rotates along with the gear and abuts against the braking auxiliary piece, the accommodating part 331 capable of accommodating the free end of the stop rod 34 is arranged on the outer peripheral wall of the braking auxiliary piece and can accommodate the free end 341 of the stop rod, when the free end of the stop rod enters the accommodating part, the reverse rotation of the motor can be braked, the reverse rotation of the motor is prevented, the increase of the forward and reverse rotation frequency when the motor meets pressure is avoided, the phenomenon that the water pumping amount is unstable is avoided, and the water pumping amount of the water pump is kept stable.

The transmission mechanism comprises an eccentric wheel 2 and a transmission groove 15, a piston head 11 is arranged at one end of a piston rod of the piston pump, the other end of the piston rod is fixedly connected with the transmission groove 15, a first baffle part 12 and a second baffle part 13 which are used as the groove walls of the transmission groove are sequentially arranged in the transmission groove along the length direction of the piston rod 1, the eccentric wheel 2 is connected with an output shaft of the gear speed change mechanism, the eccentric wheel 2 is arranged in the transmission groove, the groove walls of the transmission groove can be touched by the eccentric wheel in the rotation range of the eccentric wheel (namely the first baffle part 12 and the second baffle part 13), and the peripheral wall of the eccentric wheel is abutted against the groove walls of the transmission groove to drive the piston head.

The water pump described above further comprises a tee 5, said tee 5 comprising a first end 51 communicating with the inlet pipe 6, a second end 52 communicating with the outlet pipe 7 and a third end 53 cooperating with said piston head 11, said piston head 11 being sealingly and slidably arranged within said third end 53. The water pump can suck and pump water by the reciprocating sliding of the piston head 11.

Through the structure arrangement, when the assembling is carried out, the eccentric wheel 2 is placed into the transmission groove 15, and the eccentric wheel 2 is contacted and jointed with the first baffle part 12 and the second baffle part 13, so that the assembling can be finished, and the assembling is very convenient; an output shaft 31 of the motor 32 is connected with the eccentric wheel 2 to drive the eccentric wheel to eccentrically rotate. When the water pump is used, the motor 32 drives the eccentric wheel 2 to eccentrically rotate, and the eccentric wheel 2 can drive the piston rod 1 to reciprocate, so that the normal operation of the water pump is realized, and the structure is simple and reliable. Moreover, because the eccentric wheel 2 is of a circular structure, the eccentric wheel 2 can be always in contact with the first baffle part 12 and the second baffle part 13, and the piston rod 1 can be ensured to continuously and smoothly reciprocate, namely, the water pump can continuously and smoothly work.

In this embodiment, the motor 32 is an ac synchronous motor, and can be directly connected to the utility power for use, which is very convenient and has strong versatility.

In this embodiment, the first end 51 is provided with a first check valve 8 for communicating the first end 51 to the third end 53, that is, the water flow of the first end 51 can only flow to the third end 53; the second end portion 52 is provided with a second check valve 9 for communicating the third end portion 53 with the second end portion 52, that is, the water flow of the third end portion 53 can only flow to the second end portion 52. Through the setting of first check valve 8 and second check valve 9, avoided absorbing water effectively and pumped the water in-process, the back pressure that rivers produced ensures that the water pump can normally, smoothly carry out work.

The utility model discloses a water pump is still including supporting shell 10, piston rod 1, eccentric wheel 2 and three-way pipe 4 all set up in supporting shell 10, motor shaft 31 of motor 32 pierces into supporting shell 10 with the eccentric wheel is connected.

Further, the supporting shell 10 includes a first supporting shell 101 and a second supporting shell 102, and the first supporting shell 101 and the second supporting shell 102 are spliced to form the supporting shell 10, which is favorable for mounting of each component in the supporting shell 10.

Referring to fig. 5 to 7, when the water pump of the present invention is in use, the gear change mechanism 36 driven by the motor 32, the output shaft 31 of the gear change mechanism drives the eccentric wheel 2 to rotate eccentrically, in this process, because the eccentric wheel 2 contacts and fits with the first baffle portion 12 as the wall of the transmission groove, the eccentric wheel 2 drives the piston rod 1 to move upwards through the first baffle portion 12, the water pump is in a water-absorbing state, and water flows into the third end 53 of the three-way pipe 5 through the water inlet pipe 6 and the first check valve 8; similarly, because the eccentric wheel 2 is still attached to the second baffle 13 serving as the wall of the transmission groove in a contacting manner, the eccentric wheel 2 drives the piston rod 1 to move downwards through the second baffle 13, the water pump is in a water pumping state, and at this time, water at the third end 53 flows through the second one-way valve 9 and the water outlet pipe 7 to flow out.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. The utility model provides a water pump, includes support shell (10), piston pump, drive arrangement (3) and drive mechanism, piston pump and drive arrangement (3) install on the support shell, drive arrangement (3) include motor (32) and receive motor drive's gear change mechanism (36), gear change mechanism's output shaft (31) is through drive mechanism drive piston pump, its characterized in that is equipped with a arresting gear who restricts the motor and reverses in drive arrangement (3).

2. A pump according to claim 1, wherein the braking means comprises a braking aid (33) fixed to the shaft of the motor so as to rotate with the shaft of the motor, a stop rod (34) having a free end (341) and a fixed end provided with an elastic clamping means (342) for elastically clamping one of the gear shafts (361) of the gear change mechanism, and a stop (35) mounted to the motor housing or to the gear change mechanism support, the braking aid (33) and the stop (35) being arranged in the path of oscillation of the free end of the stop rod for limiting the amplitude of oscillation of the stop rod (34), the free end of the stop rod (34) running with the gear on which it is located and abutting against the stop when the motor is running, and when the motor is running in reverse, the free end of the stop rod (34) runs along with the gear and abuts against and blocks the brake auxiliary piece, the outer peripheral wall of the brake auxiliary piece is provided with a containing part (331) capable of containing the free end of the stop rod (34), the containing part can contain the free end (341) of the stop rod, and when the free end of the stop rod enters the containing part, the motor can be prevented from reversely rotating.

3. A water pump according to claim 1 or 2, characterized in that the transmission mechanism comprises an eccentric wheel (2) and a transmission groove (15), one end of a piston rod of the piston pump is provided with a piston head (11), the other end of the piston rod is fixedly connected with the transmission groove (15), the eccentric wheel (2) is connected with an output shaft of the gear change mechanism, the eccentric wheel (2) is arranged in the transmission groove, the wall of the transmission groove can be touched by the eccentric wheel in the rotation range of the eccentric wheel, and the circumferential wall of the eccentric wheel is abutted against the wall of the transmission groove to drive the piston head (11) to move axially.

4. A water pump according to claim 3, further comprising a tee (5), the tee (5) comprising a first end (51) for communication with the inlet pipe (6), a second end (52) for communication with the outlet pipe (7) and a third end (53) cooperating with the piston head, the piston head being sealingly and slidably arranged within the third end.

5. A water pump according to claim 1 or 2, wherein the motor is an ac synchronous motor.

6. A water pump according to claim 3, wherein said motor is an ac synchronous motor.

7. The water pump according to claim 4, wherein the motor is an ac synchronous motor.