CN219529328U - DC pump with stable operation - Google Patents

Abstract

The utility model belongs to the technical field of pump bodies, and particularly relates to a direct current pump with stable operation, which comprises a pump shell, a front shell and a motor; the front end of the pump shell is provided with a first cavity, the motor is arranged in the first cavity, the rotating shaft of the motor extends out of the first cavity, and the rotating shaft of the motor is provided with an impeller; the front shell cover is arranged at the front end of the motor, a containing cavity is formed between the front shell and the motor, the impeller is positioned in the containing cavity, and the outer wall of the front shell cover is provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the containing cavity; a fixing component is arranged between the rear end of the motor and the inner wall of the first cavity, and the fixing component fixedly connects the rear end of the motor with the inner wall of the first cavity; when the motor drives the impeller to run at a high speed, the inner wall of the first cavity stably supports the rear end of the motor, so that the rear end of the motor deflects and vibrates to a small extent, the running stability of the direct current pump is high, the direct current pump is not easy to wear or damage, and the service life of the direct current pump is prolonged.

Description

DC pump with stable operation

Technical Field

The utility model belongs to the technical field of pump bodies, and particularly relates to a direct current pump with stable operation.

Background

Both the direct-current water pump and the direct-current oil pump are called direct-current pumps. The direct current pump mainly comprises a pump shell, a front shell, a rear shell and a motor assembly; the motor assembly is arranged in the pump shell and is positioned at the front end of the pump shell, the front shell is arranged at the front end of the pump shell, the front shell is provided with a liquid inlet and a liquid outlet, an impeller is arranged on a rotating shaft of the motor assembly, the impeller is positioned in the front shell, the rear shell is arranged at the rear end of the pump shell, and the impeller is driven to rotate at a high speed through the motor assembly, so that liquid is driven to flow in from the liquid inlet and flow out from the liquid outlet.

For example: the utility model has disclosed a kind of direct current submersible pump motor seal structure in China patent application number CN201920966212.3, including pump housing, motor back cover, motor front cover and direct current motor, said motor back cover and motor front cover are fixedly installed in pump housing, the inner wall of the said pump housing forms the pump cavity for liquid circulation with motor back cover and motor front cover outer wall, said motor front cover and motor back cover seal connection form the motor cavity, the said direct current motor is installed in motor cavity, the motor shaft of the direct current motor crosses the motor front cover, there are dynamic seals between motor shaft and motor front cover; a motor fixing plate is arranged between the direct current motor and the motor front cover, the motor fixing plate is fixedly connected with the motor and the motor front cover respectively, and the joints of the motor fixing plate and the motor front cover are all positioned in the motor cavity. According to the motor sealing structure of the direct current submersible pump, disclosed by the utility model, bolts exposing out of a motor shell and corresponding bolt holes are eliminated by utilizing the motor fixing plate, the sealing performance of a motor cavity is improved, and the reliability of the submersible pump is ensured.

From the above, a motor fixing plate is arranged between the direct current motor and the motor front cover, the motor fixing plate is fixedly connected with the motor and the motor front cover respectively, the connection parts of the motor fixing plate and the motor front cover are all positioned in the motor cavity, the front end of the direct current motor is fixedly connected with the motor front cover through the motor fixing plate, and the rear end of the direct current motor is suspended in the motor cavity. When the rotating shaft of the direct current motor drives the impeller to rotate at a high speed, liquid is input into the pump from the liquid inlet and is output from the liquid outlet by utilizing centrifugal force, and when the direct current motor drives the impeller to operate at a high speed, the front end of the direct current motor is stressed greatly, but the rear end of the direct current motor lacks support, the rear end of the direct current motor can deflect and vibrate to a greater extent, so that the operation of the direct current pump is not stable enough, and the direct current pump is easy to damage.

Disclosure of Invention

The utility model aims to provide a direct current pump with stable operation, and aims to solve the technical problems that when a direct current motor of the direct current pump drives an impeller to operate at a high speed in the prior art, the front end of the direct current motor is stressed greatly, but the rear end of the direct current motor lacks support, the rear end of the direct current motor can generate deflection and vibration to a greater extent, so that the operation of the direct current pump is not stable enough, and the direct current pump is easy to damage.

In order to achieve the above purpose, the embodiment of the utility model provides a direct current pump with stable operation, which comprises a pump shell, a front shell and a motor; the front end of the pump shell is provided with a first cavity, the motor is arranged in the first cavity, a rotating shaft of the motor extends out of the first cavity, and an impeller is arranged on the rotating shaft of the motor; the front shell is covered at the front end of the motor, a cavity is formed between the front shell and the motor, the impeller is positioned in the cavity, and a liquid inlet pipe and a liquid outlet pipe which are communicated with the cavity are arranged on the outer wall of the front shell; a fixing component is arranged between the rear end of the motor and the inner wall of the first cavity, and the rear end of the motor is fixedly connected with the inner wall of the first cavity by the fixing component.

Optionally, the fixing component comprises a clamping column and a clamping groove; the clamping column is adaptively clamped in the clamping groove, so that the rear end of the motor is fixedly connected with the inner wall of the first cavity.

Optionally, the clamping post and the clamping groove are respectively arranged at the rear end of the motor and on the inner wall of the first cavity.

Optionally, an annular mounting portion extends outwards from the front end edge of the housing of the motor, and the annular mounting portion is fixedly connected with the front end edge of the pump housing.

Optionally, a plurality of first connecting holes are annularly and uniformly distributed on the edge of the front shell, a plurality of second connecting holes are annularly and uniformly distributed on the annular mounting part, a plurality of first screw holes are annularly and uniformly distributed on the edge of the front end of the pump shell, and each first screw sequentially penetrates through one first connecting hole and one second connecting hole to be in threaded connection with one first screw hole, so that the front shell, the motor and the pump shell are sequentially connected.

Optionally, a first sealing ring is provided between the front shell and the annular mounting portion.

Optionally, the annular mounting portion is provided with a first sealing groove, and the first sealing ring is accommodated in the first sealing groove.

Optionally, a second sealing ring is provided between the annular mounting portion and the front end of the pump housing.

Optionally, a mounting seat is arranged at the bottom of the pump housing.

Optionally, the mounting seat is provided with a plurality of mounting holes in a penetrating manner.

Compared with the prior art, the one or more technical schemes in the direct current pump with stable operation provided by the embodiment of the utility model have at least one of the following technical effects:

the fixed subassembly is with the rear end of motor and the inner wall fixed connection of first cavity, and when motor drive impeller high-speed operation, the inner wall steady support motor's of first cavity rear end makes the rear end beat and the vibration degree of motor very little to make direct current pump operating stability high, be difficult to wearing and tearing or damage, improved direct current pump's life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic sectional view of a split-type dc pump according to the present utility model.

Fig. 2 is a schematic sectional view of a split-type dc pump according to the present utility model.

Fig. 3 is a schematic structural view of the pump housing and rear housing of the present utility model.

Fig. 4 is an exploded view of the pump housing and rear housing of the present utility model.

Fig. 5 is a schematic structural view of the seal ring of the present utility model.

Wherein, each reference sign in the figure:

100. a pump housing; 110. a first cavity; 120. a second cavity; 130. a partition plate; 131. a threading hole; 132. a seal ring; 133. a cable; 140. a first screw hole; 150. a second seal ring; 160. a mounting base; 161. fastening a screw; 162. a mounting hole; 170. a second screw hole;

200. a front shell; 210. a cavity; 220. a liquid inlet pipe; 230. a liquid outlet pipe; 240. a first connection hole; 250. a first screw;

300. a motor; 310. an impeller; 320. an annular mounting portion; 321. a second connection hole; 330. a first seal ring; 331. a first seal groove;

400. a fixing assembly; 410. a clamping column; 420. a clamping groove;

500. a rear case; 510. a third connection hole; 520. a second screw; 530. a third seal ring; 540. an electrical connector.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In one embodiment of the present utility model, referring to fig. 1-5, a stable operation dc pump is provided, including a pump housing 100, a front housing 200, and a motor 300.

The front end of the pump housing 100 is provided with a first cavity 110, the motor 300 is disposed in the first cavity 110, a rotating shaft of the motor 300 extends out of the first cavity 110, and an impeller 310 is disposed on the rotating shaft of the motor 300.

The front casing 200 is covered at the front end of the motor 300, a cavity 210 is formed between the front casing 200 and the motor 300, the impeller 310 is located in the cavity 210, and a liquid inlet pipe 220 and a liquid outlet pipe 230 which are communicated with the cavity 210 are disposed on the outer wall of the front casing 200.

Wherein, a fixing component 400 is disposed between the rear end of the motor 300 and the inner wall of the first cavity 110, and the fixing component 400 fixedly connects the rear end of the motor 300 with the inner wall of the first cavity 110.

Compared with the prior art, the one or more technical schemes in the direct current pump with stable operation provided by the embodiment of the utility model have at least one of the following technical effects:

referring to fig. 1 to 4, the fixing assembly 400 fixedly connects the rear end of the motor 300 with the inner wall of the first cavity 110, and when the motor 300 drives the impeller 310 to operate at a high speed, the inner wall of the first cavity 110 stably supports the rear end of the motor 300, so that the rear end of the motor 300 is deflected and vibrated to a small extent, thereby enabling the operation stability of the direct current pump to be high, being not easy to be worn or damaged, and improving the service life of the direct current pump.

In another embodiment of the present utility model, referring to fig. 1 and 2, the fixing assembly 400 includes a clamping post 410 and a clamping groove 420, wherein the clamping post 410 is adapted to be clamped in the clamping groove 420, so that the rear end of the motor 300 is fixedly connected with the inner wall of the first cavity 110, and the structure is simple and the installation is convenient.

In a specific embodiment, referring to fig. 1 and 2, the locking post 410 and the locking groove 420 are respectively provided on the rear end of the motor 300 and the inner wall of the first cavity 110.

In other embodiments, the locking post 410 and the locking groove 420 are respectively provided on the inner wall of the first cavity 110 and the rear end of the motor 300.

In another embodiment of the present utility model, the fixing assembly 400 includes a fixing screw (not shown). The inner wall of the first cavity 110 is provided with a through hole, through which a fixing screw passes to be in threaded connection with the rear end of the motor 300, so that the rear end of the motor 300 is fixedly connected with the inner wall of the first cavity 110, and the structure is simple.

In another embodiment of the present utility model, referring to fig. 1 to 4, an annular mounting portion 320 is extended outwardly from a front end edge of the housing of the motor 300, and the annular mounting portion 320 is fixedly coupled with the front end edge of the pump housing 100, thereby fixedly mounting the motor 300 in the first cavity 110.

Further, referring to fig. 1 to 4, a plurality of first connection holes 240 are uniformly distributed on the edge of the front case 200 in an annular shape, a plurality of second connection holes 321 are uniformly distributed on the annular mounting portion 320 in an annular shape, a plurality of first screw holes 140 are uniformly distributed on the front edge of the pump case 100 in an annular shape, and each first screw 250 sequentially passes through one of the first connection holes 240 and one of the second connection holes 321 to be in threaded connection with one of the first screw holes 140, so that the front case 200, the motor 300 and the pump case 100 are sequentially fixedly connected. The three components of the front case 200, the motor 300 and the pump housing 100 can be fixedly connected at one time, and the assembly is convenient.

Further, referring to fig. 1 to 4, a first sealing ring 330 is disposed between the front case 200 and the annular mounting portion 320, and by providing the first sealing ring 330, the tightness between the front case 200 and the annular mounting portion 320 is increased, and the sealing effect is good.

Further, referring to fig. 1-4, the annular mounting portion 320 is provided with a first sealing groove 331, the first sealing ring 330 is accommodated in the first sealing groove 331, the first sealing ring 330 is positioned and mounted, and the first sealing ring 330 at least partially extends out of the first sealing groove 331 and is in sealing contact with the front shell 200.

Further, referring to fig. 1 to 4, a second sealing ring 150 is provided between the annular mounting portion 320 and the front end of the pump housing 100, and by providing the second sealing ring 150, the tightness between the annular mounting portion 320 and the pump housing 100 is increased, and the sealing effect is good.

In another embodiment of the present utility model, referring to fig. 1-4, a mounting base 160 is provided at the bottom of the pump housing 100, and the dc pump with stable operation can be mounted at a designated position through the mounting base 160. Wherein, the mounting base 160 is fixedly connected to the bottom of the pump housing 100 by a plurality of fastening screws 161.

Further, referring to fig. 1 to 4, the mounting base 160 is provided with a plurality of mounting holes 162 therethrough, and the mounting holes 162 are combined with fastening screws 161 to fixedly mount the dc pump with stable operation at a designated position, thereby facilitating the mounting.

In another embodiment of the present utility model, referring to fig. 1-4, the pump housing 100 is provided with an inner cavity therethrough, wherein a partition 130 is disposed at a middle portion of the inner cavity, and the partition 130 divides the inner cavity into the first cavity 110 and the second cavity 120. The upper part of the partition 130 is provided with a threading hole 131 for communicating the first cavity 110 and the second cavity 120, the second cavity 120 is used for installing a control device (not shown), and a cable 133 passes through the threading hole 131 to electrically connect the motor 300 and the control device.

The control device can be a control structure such as a PCB, a controller or a combination of the PCB and the controller, and is a mature prior art.

Specifically, when the direct current pump is worn or loosened due to long-time use, a gap is formed at the joint of the pump housing 100 and the motor 300, liquid firstly enters the first space from the gap and is completely blocked by the partition 130 between the first space and the second space, the liquid is prevented from entering the second space to damage the control device, the function of protecting the control device is achieved, potential safety hazards of electric leakage cannot occur, and safety is high.

Further, referring to fig. 3-5, the threading hole 131 is provided with a sealing ring 132 in a sealing manner, and the cable 133 is provided in the annular hole of the sealing ring 132 in a penetrating manner and is in sealing abutment therewith. The sealing ring 132 can seal the threading hole 131, does not influence the passing of the cable 133, further isolates the communication between the first space and the second space, and has better protection effect.

In another embodiment of the present utility model, referring to fig. 1-4, the opening cover of the second cavity 120 is provided with a rear housing 500, a plurality of third connecting holes 510 are annularly and uniformly distributed on the edge of the rear housing 500, a plurality of second screw holes 170 are annularly and uniformly distributed on the edge of the rear end of the pump housing 100, and each second screw 520 passes through one of the third connecting holes 510 to be in threaded connection with one of the second screw holes 170, so that the rear housing 500 is fixedly connected to the rear end of the pump housing 100, and the installation is convenient.

Further, referring to fig. 1 to 4, a third sealing ring 530 is disposed between the rear housing 500 and the pump housing 100, and by providing the third sealing ring 530, the tightness between the rear housing 500 and the pump housing 100 is increased, and the sealing effect is good, so that the control device in the second cavity 120 can be well protected.

Further, referring to fig. 1 to 4, the rear case 500 is embedded with an electrical connector 540, one end of the electrical connector 540 is electrically connected to the control device, and the other end of the electrical connector 540 is used for connecting an electrical wire.

The rest of the present embodiment is the same as the first embodiment, and the unexplained features in the present embodiment are all explained by the first embodiment, and are not described here again.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. For those skilled in the art, the architecture of the utility model can be flexible and changeable without departing from the concept of the utility model, and serial products can be derived. But a few simple derivatives or substitutions should be construed as falling within the scope of the utility model as defined by the appended claims.

Claims (10)

1. A DC pump with stable operation comprises a pump shell, a front shell and a motor; the front end of the pump shell is provided with a first cavity, the motor is arranged in the first cavity, a rotating shaft of the motor extends out of the first cavity, and an impeller is arranged on the rotating shaft of the motor; the front shell is covered at the front end of the motor, a cavity is formed between the front shell and the motor, the impeller is positioned in the cavity, and a liquid inlet pipe and a liquid outlet pipe which are communicated with the cavity are arranged on the outer wall of the front shell; the motor is characterized in that a fixing component is arranged between the rear end of the motor and the inner wall of the first cavity, and the fixing component is used for fixedly connecting the rear end of the motor with the inner wall of the first cavity.

2. The steady operation dc pump of claim 1 wherein: the fixing component comprises a clamping column and a clamping groove; the clamping column is adaptively clamped in the clamping groove, so that the rear end of the motor is fixedly connected with the inner wall of the first cavity.

3. The steady operation dc pump of claim 2 wherein: the clamping column and the clamping groove are respectively arranged at the rear end of the motor and on the inner wall of the first cavity.

4. The steady operation dc pump of claim 1 wherein: the front end edge of the shell of the motor extends outwards to form an annular mounting part, and the annular mounting part is fixedly connected with the front end edge of the pump shell.

5. The steady operation dc pump of claim 4 wherein: the edge annular equipartition of preceding shell has a plurality of first connecting holes, annular installation department annular equipartition has a plurality of second connecting holes, the front end edge annular equipartition of pump housing has a plurality of first screw holes, every first screw pass one in proper order first connecting hole and one second connecting hole with one first screw hole threaded connection, so that preceding shell the motor with the pump housing is fixed in proper order and is linked to each other.

6. The steady operation dc pump of claim 4 wherein: a first sealing ring is arranged between the front shell and the annular mounting part.

7. The steady operation dc pump of claim 6 wherein: the annular installation portion is provided with a first sealing groove, and the first sealing ring is accommodated in the first sealing groove.

8. The steady operation dc pump of claim 4 wherein: a second sealing ring is arranged between the annular mounting part and the front end of the pump shell.

9. The steady operation dc pump of claim 1 wherein: the bottom of the pump shell is provided with a mounting seat.

10. The steady operation dc pump of claim 9 wherein: the mounting seat is provided with a plurality of mounting holes in a penetrating mode.