CN213981347U - Lead structure of canned motor pump - Google Patents

Abstract

The utility model relates to a water pump technical field particularly, relates to a canned motor pump lead structure. The shielding pump lead structure comprises a pump body and a pressure sensor. The pump body comprises a liquid inlet and a liquid outlet which are oppositely arranged; the pump body comprises a pumping channel and an outflow channel, and the liquid inlet is connected with the liquid outlet sequentially through the pumping channel and the outflow channel; the pressure sensor is in communication with the pumping channel through the extension channel, and the pressure sensor is located in the pump body proximate the outflow channel. It can be convenient for install, and measuring effect is outstanding.

Description

Lead structure of canned motor pump

Technical Field

The utility model relates to a water pump technical field particularly, relates to a canned motor pump lead structure.

Background

The pressure sensor is an important element for detecting the working state of the water pump and has important application in a shield pump.

However, the existing pressure sensor is arranged at the outlet of the shield pump, so that the installation is difficult and the measuring effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a canned motor pump lead structure, it can be convenient for install, and the measuring effect is outstanding, for example.

The embodiment of the utility model discloses a can realize like this:

in a first aspect, the present invention provides a lead structure of a canned motor pump, including:

a pump body and a pressure sensor; the pump body comprises a liquid inlet and a liquid outlet which are oppositely arranged;

the pump body comprises a pumping channel and an outflow channel, and the liquid inlet is connected with the liquid outlet sequentially through the pumping channel and the outflow channel;

the pressure sensor is in communication with the pumping channel through an extension channel, and the pressure sensor is located in the pump body proximate the outflow channel.

The shielding pump lead structure of the scheme has the advantages that the pressure sensor is communicated with the pumping channel by arranging the extension channel, and the pumping channel is connected with the outflow channel and extends to the liquid outlet. So when making the fluid flow out partly can smoothly, evenly get into and extend the passageway, the mode of misplacing like this is convenient for pressure sensor can high-efficient, steadily inspect the pressure of the outflow of canned motor pump to the canned motor pump of being convenient for adjusts the velocity of flow isoparametric of pumping, and then ensures canned motor pump's stable work. Compare in prior art with the mode that pressure sensor directly set up outflow passageway in order to measure outflow pressure, such canned motor pump lead structure is because making pressure sensor be located the position that is close to outflow passageway to ensured pressure sensor can accurately measure outflow pressure, the installation of pressure sensor of can being convenient for again, and then improved among the prior art pressure sensor and installed inconvenient, the not good problem of measuring effect.

In an alternative embodiment, the pressure sensor is located below the outflow channel.

Therefore, the pressure sensor is more compact in arrangement with the outflow channel, and the overall space utilization rate of the canned motor pump is saved.

In an alternative embodiment, the pressure sensor and the outflow channel are parallel to each other. Therefore, the occupied space of the pressure sensor is further reduced, and the pressure parameters obtained by the pressure sensor can be more accurate.

In an alternative embodiment, the pump further comprises a seal, and the pressure sensor is hermetically connected with the pump body through the seal.

The sealing element can ensure the tight connection of the pressure sensor and the pump body and ensure that the fluid in the extension channel cannot leak.

In an alternative embodiment, a flow sensor is further included, the flow sensor being disposed in the outflow channel.

The flow sensor is used to measure the outflow of the pump body. The flow sensor cooperates with the pressure sensor to obtain the pressure and flow of the outflow fluid, so that the shield pump can adjust the flow and flow speed of the outflow fluid conveniently, and the shield pump can work stably, efficiently and safely.

In an alternative embodiment, the flow sensor is a hall sensor with a turbine structure.

In an alternative embodiment, the device further comprises a fixing piece;

the fixing piece comprises a first fixing part and a second fixing part which are connected with each other;

the first fixing portion is used for enabling the pressure sensor to be arranged on the pump body, and the second fixing portion is used for enabling the flow sensor to be arranged on the pump body.

Can ensure through the mounting that pressure sensor and flow sensor all are connected with the pump body steadily. And the arrangement of the first fixing part and the second fixing part can ensure that the pressure sensor and the flow sensor are respectively and independently installed, so that the stability and the reliability of the pressure sensor and the flow sensor in arrangement are ensured.

In an alternative embodiment, the first fixing portion includes a positioning hole and a first mounting hole;

the positioning hole is used for enabling the end part of the pressure sensor to penetrate through; the first mounting hole is used for being matched with the first matching hole in the pump body, so that the first fixing part and the pressure sensor are arranged on the pump body after the first connecting piece penetrates through the first mounting hole and the first matching hole.

In an alternative embodiment, the second fixing portion includes a second mounting hole;

the second mounting hole is matched with a second matching hole in the pump body, so that a second connecting piece penetrates through the second mounting hole and the second matching hole to fix the second fixing part and the flow sensor on the pump body.

In an optional embodiment, the first fixing portion and the second fixing portion have an included angle.

The first fixing part and the second fixing part are provided with included angles, so that the pressure sensor and the flow sensor can be installed in a staggered mode with the pump body respectively, the distance between the first fixing part and the second fixing part is further reduced, and the space utilization rate of the pump body is improved.

The utility model discloses beneficial effect includes, for example:

the shielding pump lead structure comprises a pump body and a pressure sensor. The pressure sensor is in communication with the pumping channel through the extension channel, and the pressure sensor is located in the pump body proximate the outflow channel. So when making the fluid flow out partly can smoothly, evenly get into and extend the passageway, the mode of misplacing like this is convenient for pressure sensor can high-efficient, detect the pressure of the play of canned motor pump steadily to the canned motor pump of being convenient for adjusts the velocity of flow isoparametric of pumping, and then ensures canned motor pump's stable work. On the other hand, the installation of the pressure sensor is facilitated, and the problems that the pressure sensor is inconvenient to install and poor in measurement effect in the prior art are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a lead structure of a canned motor pump according to an embodiment of the present invention;

fig. 2 is a partial schematic view of a lead structure of a canned motor pump according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a fixing member according to an embodiment of the present invention.

Icon: 10-canned pump lead configuration; 100-a pump body; 101-liquid inlet; 102-a liquid outlet; 103-pumping channel; 104-an outflow channel; 105-an extension channel; 110-a front support cover; 120-barrel; 130-rear support cover; 210-a stator assembly; 220-a rotor assembly; 230-a bearing; 300-a pressure sensor; 310-a seal; 400-a flow sensor; 500-a fixture; 510-a first fixed part; 511-locating holes; 512-first mounting hole; 520-a second fixation section; 521-a first extension plate; 522-a second extension panel; 523-second mounting hole; 600-a control component; 610-a cartridge; 620-lower shell; 630-a controller; 640-a metal plate; 650-a connecting plate; 660-power supply line.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The canned motor pump combines a pump and a motor together, a rotor of the motor and an impeller of the pump are fixed on the same rotating shaft, and the rotor of the motor is isolated from a stator by using a canned sleeve. The rotor operates in a pumped medium, the power of which is applied to the rotor by the magnetic field of the stator.

The pressure sensor is an important element for detecting the working state of the water pump and has important application in a shield pump. It can monitor the pressure of water flow for regulating water pressure and flow rate, etc.

However, the existing pressure sensors are arranged directly in the outflow channel of the canned motor pump. Furthermore, the pressure sensor is arranged on the inner wall of the outflow channel along the radial direction of the outflow channel, and the detection end of the pressure sensor is opposite to the center of the outflow channel.

Because the outflow channel is narrow and the other components are arranged to make the position space narrow, the installation of the pressure sensor is difficult, and the measuring effect of the pressure sensor is poor.

To improve the above technical problem, a shielded pump lead structure is provided in the following embodiments.

Referring to fig. 1, the present embodiment provides a shielded pump lead structure 10, which includes a pump body 100 and a pressure sensor 300.

The pump body 100 comprises a liquid inlet 101 and a liquid outlet 102 which are oppositely arranged;

the pump body 100 comprises a pumping channel 103 and an outflow channel 104, and the liquid inlet 101 is connected with the liquid outlet 102 sequentially through the pumping channel 103 and the outflow channel 104;

the pressure sensor 300 communicates with the pumping channel 103 through the extension channel 105, and the pressure sensor 300 is located in the pump body 100 near the outflow channel 104.

The lead structure 10 of the present embodiment of the canned motor pump is provided with the extending passage 105, so that the pressure sensor 300 is communicated with the pumping passage 103, and the pumping passage 103 is connected with the outflow passage 104 and extends to the liquid outlet 102. So when making fluid flow out partly can smoothly, evenly get into extension passageway 105, another part fluid is direct to flow to outflow passageway 104 from pumping channel 103, and the mode of misplacing arrangement is convenient for pressure sensor 300 can be high-efficient, steadily inspect the pressure of the outflow of canned motor pump like this to canned motor pump adjusts the velocity of flow isoparametric of pumping, and then ensures canned motor pump's stable work.

Compared with the mode that the pressure sensor 300 is directly arranged in the outflow channel 104 to measure the outflow pressure in the prior art, the lead structure 10 of the shielding pump ensures that the pressure sensor 300 can accurately measure the outflow pressure and is convenient for the installation of the pressure sensor 300 because the pressure sensor 300 is located at the position close to the outflow channel 104, thereby improving the problems of inconvenient installation and poor measurement effect of the pressure sensor 300 in the prior art.

Referring to fig. 1-3, more details of the canned motor pump lead structure 10 will be described.

As can be seen, the liquid inlet 101 and the liquid outlet 102 are located at two ends of the pump body 100 in the length direction, and are located on the same axis.

In the present embodiment, the pressure sensor 300 is located below the outflow channel 104. Thus, the pressure sensor 300 and the outflow channel 104 are more compact, and the overall space utilization rate of the canned motor pump is saved.

In the present embodiment, the pressure sensor 300 and the outflow channel 104 are parallel to each other. Therefore, the occupied space of the pressure sensor 300 is further reduced, and the pressure parameters obtained by the pressure sensor 300 can be more accurate.

As can be seen from the figure, the extension direction of the extension channel 105 and the extension direction of the outflow channel 104 are perpendicular to each other. And the length direction of the pressure sensor 300 is perpendicular to the extending direction of the extending channel 105, i.e. the length direction of the pressure sensor 300 and the extending direction of the outflow channel 104 are parallel to each other. And in the space of the pump body 100, the pressure sensor 300 is located below the outflow channel 104.

Further, the detection end of the pressure sensor 300 faces the end of the extension passage 105.

As can also be seen from the figure, in the present embodiment of the invention, a sealing member 310 is further included, and the pressure sensor 300 is hermetically connected to the pump body 100 through the sealing member 310.

The seal 310 can ensure a tight connection of the pressure sensor 300 to the pump body 100 and ensure that fluid in the extension channel 105 does not leak. Optionally, the seal 310 is an O-ring seal.

In this embodiment, the shielded pump lead structure 10 further includes a flow sensor 400, the flow sensor 400 being disposed in the outflow channel 104.

The flow sensor 400 is used to measure the outflow of the pump body 100. Flow sensor 400 cooperates with pressure sensor 300, can acquire the pressure and the flow of outflow fluid to be convenient for the canned motor pump to adjust its flow and velocity of flow, the guarantee canned motor pump can be stable, high-efficient and work safely.

In the present embodiment of the present invention, the flow sensor 400 is a hall sensor having a turbine structure. In this embodiment, only the turbine structure of the flow sensor 400 is disposed in the outflow channel 104, so that the turbine sensor can accurately and efficiently measure the flow of the outflow fluid, thereby avoiding interference of other structures, and avoiding the problems of inconvenience in installation and poor measurement effect caused by disposing both the pressure sensor 300 and the flow sensor 400 in the outflow channel 104 in the prior art.

On the other hand, the turbine structure is directly fitted on the inner wall of the outflow channel 104. With this arrangement, since the outflow passage 104 does not need to be provided with a slot required for installing the pressure sensor 300, the structure of the pump body 100 at a position near the liquid outlet 102 can be designed to be simpler, and the whole structure is also more convenient to assemble and replace for maintenance.

In the present embodiment of the present invention, the present invention further includes a fixing member 500; the fixing member 500 includes a first fixing portion 510 and a second fixing portion 520 connected to each other;

the first fixing portion 510 is used to mount the pressure sensor 300 on the pump body 100, and the second fixing portion 520 is used to mount the flow sensor 400 on the pump body 100.

The fixing member 500 can ensure that the pressure sensor 300 and the flow sensor 400 are stably connected to the pump body 100. And the arrangement of the first fixing part 510 and the second fixing part 520 can ensure that the pressure sensor 300 and the flow sensor 400 are independently installed, thereby ensuring the stability and reliability of the arrangement of the two.

Further, the arrangement of the fixing member 500 can ensure the stable installation of the pressure sensor 300 and the flow sensor 400; on the other hand, the fixing member 500 provides a support for the flow sensor 400 and the pressure sensor 300, so that the distance between the flow sensor and the pressure sensor 300 can be further reduced, thereby providing space utilization of the pump body 100.

In the present embodiment, the first fixing portion 510 includes a positioning hole 511 and a first mounting hole 512;

the positioning hole 511 is used for passing the end of the pressure sensor 300; the first mounting hole 512 is used for matching with a first mating hole on the pump body 100, so that the first fixing portion 510 and the pressure sensor 300 are disposed on the pump body 100 after the first connecting piece is inserted into the first mounting hole 512 and the first mating hole.

Further, the detecting end of the pressure sensor 300 extends into the extending channel 105 after passing through the positioning hole 511. The body of the pressure sensor 300 abuts against the periphery of the positioning hole 511. The first connecting member is connected to the first mating hole after passing through the first mounting hole 512. So that the first fixing portion 510 is fastened to the pump body 100 together with the pressure sensor 300.

Optionally, the first connector is a screw. There are two first mounting holes 512, and the two first mounting holes 512 are respectively disposed at two sides of the positioning hole 511.

The first fixing portion 510 is a substantially rhombic plate member. The positioning hole 511 is a circular through hole formed in the middle of the rhombic plate, and the two first mounting holes 512 are circular through holes respectively formed in the positions of the rhombic plate.

In the present embodiment of the present invention, the second fixing portion 520 includes a second mounting hole 523;

the second mounting hole 523 is matched with a second mating hole on the pump body 100, so that the second fixing portion 520 and the flow sensor 400 are fixed on the pump body 100 after the second connecting piece is arranged through the second mounting hole 523 and the second mating hole.

Further, the extending direction of the second mounting hole 523 and the extending direction of the second engagement hole are offset from the pressure sensor 300. Namely, the connection direction of the flow sensor 400 and the pressure sensor 300 forms an included angle with the extending direction of the second mounting hole 523; the connection direction of the flow sensor 400 and the pressure sensor 300 forms an angle with the extending direction of the second fitting hole.

The second mounting holes 523 extend in the same direction as the second mating holes, and both extend in the radial direction of the outflow channel 104.

The second fixing portion 520 is provided to secure stable connection between the flow sensor 400 and the outflow passage 104 of the pump body 100 and to secure a relative position between the flow sensor 400 and the pressure sensor 300.

Further, in the present embodiment of the invention, the first fixing portion 510 and the second fixing portion 520 have an included angle.

The first fixing portion 510 and the second fixing portion 520 have included angles, so that the pressure sensor 300 and the flow sensor 400 can be installed in a staggered manner with the pump body 100, the distance between the two is further reduced, and the space utilization rate of the pump body 100 is improved.

Optionally, the second fixing part 520 includes a first extension plate 521 and a second extension plate 522. The second fixing portion 520 is perpendicular to the first fixing portion 510.

The first extension plate 521 is located at the corner of the diamond-shaped plate of the first fixing portion 510. A connecting line of the two first mounting holes 512 of the first fixing portion 510 is parallel to the first extending plate 521. The longitudinal end of the second extension plate 522 is connected to the longitudinal end of the first extension plate 521. The first extension plate 521 and the second extension plate 522 form an included angle.

Optionally, an included angle between a surface of the second extension plate 522 close to the flow sensor 400 and a surface of the second extension plate 522 close to the flow sensor 400 is an obtuse angle. The second mounting hole 523 is a circular hole provided on the second extension plate 522.

Optionally, the second connector is a pin.

Further, in the present embodiment of the present invention, the canned motor pump lead structure 10 includes a stator assembly 210 and a rotor assembly 220. Wherein the stator assembly 210 includes stator windings and a stator ring can. The stator winding is arranged in the annular space of the closed stator ring cylinder.

The rotor assembly 220 includes a rotor, a rotation shaft, and a bushing. The rotor is fixedly arranged on the rotating shaft through a shaft sleeve. The rotor assembly 220 is rotatably disposed in an inner wall space of the stator assembly 210. The rotary shaft is rotatably provided in the pump body 100 through a bearing 230.

When the stator assembly 210 is energized, a changing magnetic field is generated to rotate the rotor assembly 220 and drive the impeller to rotate. So that a portion of the fluid flowing from the liquid inlet 101 through the pumping channel 103 flows directly from the outflow channel 104 to the liquid outlet 102; another portion of the fluid after passing through the pumping channel 103 flows to the extension channel 105 (for the pressure sensor 300 to measure the outflow pressure), and then flows from the outflow channel 104 to the liquid outlet 102.

It should be noted that the pumping flow path here includes a first path formed by the water outlet section of the guide shell, the outer wall of the stator ring cylinder and the inner wall of the cylinder body 120 of the pump body 100, and a second path formed by the water inlet section of the guide shell, the bearing 230, the rotor assembly 220 and the inner wall of the stator ring cylinder.

The pump body 100 of this embodiment further includes a front support cap 110, a barrel 120, and a rear support cap 130. The front and rear support covers 110 and 130 are respectively provided at both ends of the length direction of the drum 120 to form a closed structure.

Further, the canned pump lead configuration 10 further includes a control assembly 600. The control assembly 600 includes a case 610, a lower case 620, a controller 630, a metal plate 640, a connection plate 650, and a power supply line 660. The case 610 is disposed below the pump body 100, and the lower case 620 is disposed on a side of the case 610 away from the pump body 100. The outer wall of the pump body 100, the case 610 and the lower case 620 enclose a sealed electric appliance space.

The controller 630 is disposed on the connection plate 650 by epoxy bonding. The metal plate 640 is clamped on the box 610, the upper plate surface of the metal plate 640 abuts against and is connected with the outer wall of the cylinder 120 of the pump body 100, and the metal plate 640 is connected with the connecting plate 650. The communication ports of the pressure sensor 300 and the flow sensor 400 are located in the appliance space, and the communication ports of the pressure sensor 300 and the flow sensor 400 are connected with the controller 630 through a connection line.

Optionally, the metal plate 640 is an aluminum plate, which has a superior conductive effect and a good grounding effect.

The circuit arrangement mode can ensure the waterproof effect of the shielding pump lead structure 10 (the power line 660 and the like must be reliably connected and waterproof), so that the whole structure is more stable and reliable.

To sum up, the embodiment of the utility model provides a canned motor pump lead structure 10 has following advantage at least:

the pressure sensor 300 and the flow sensor 400 are arranged in different flow channels in a staggered manner, so that the structure is simple and the installation is convenient;

the staggered arrangement mode is more favorable for leading out and arranging the connecting wires;

the provision of the metal plate 640 and the like has an excellent grounding effect;

the metal plate 640 is attached to the outer surface of the pump body 100, so that heat can be directly taken away through water flow, and a heat dissipation effect is achieved;

the sealing ring, the box body 610 and the like are arranged, so that the integral structure has a good waterproof effect.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A canned pump lead structure, comprising:

a pump body (100) and a pressure sensor (300); the pump body (100) comprises a liquid inlet (101) and a liquid outlet (102) which are oppositely arranged;

the pump body (100) comprises a pumping channel (103) and an outflow channel (104), and the liquid inlet (101) is connected with the liquid outlet (102) sequentially through the pumping channel (103) and the outflow channel (104);

the pressure sensor (300) communicates with the pumping channel (103) through an extension channel (105), and the pressure sensor (300) is located in the pump body (100) near the outflow channel (104).

2. The canned pump lead structure of claim 1, wherein:

the pressure sensor (300) is located below the outflow channel (104).

3. The canned pump lead structure of claim 2, wherein:

the pressure sensor (300) and the outflow channel (104) are parallel to each other.

4. The canned pump lead structure of claim 3, wherein:

the pressure sensor (300) is hermetically connected with the pump body (100) through the sealing piece (310).

5. The canned pump lead structure of claim 1, wherein:

further comprising a flow sensor (400), the flow sensor (400) being arranged in the outflow channel (104).

6. The canned pump lead structure of claim 5, wherein:

the flow sensor (400) is a Hall sensor with a turbine structure.

7. The canned pump lead structure of claim 5, wherein:

also includes a fixing member (500);

the fixing member (500) includes a first fixing portion (510) and a second fixing portion (520) connected to each other;

the first fixing portion (510) is used for arranging a pressure sensor (300) on the pump body (100), and the second fixing portion (520) is used for arranging a flow sensor (400) on the pump body (100).

8. The canned pump lead structure of claim 7, wherein:

the first fixing part (510) comprises a positioning hole (511) and a first mounting hole (512);

the positioning hole (511) is used for enabling the end of the pressure sensor (300) to pass through; the first mounting hole (512) is used for being matched with a first matching hole in the pump body (100) so that a first fixing portion (510) and the pressure sensor (300) are arranged on the pump body (100) after a first connecting piece penetrates through the first mounting hole (512) and the first matching hole.

9. The canned pump lead structure of claim 8, wherein:

the second fixing portion (520) includes a second mounting hole (523);

the second mounting hole (523) is matched with a second matching hole in the pump body (100) so that a second connecting piece penetrates through the second mounting hole (523) and the second matching hole to fix the second fixing part (520) and the flow sensor (400) on the pump body (100).

10. The canned pump lead structure of claim 9, wherein:

the first fixing part (510) and the second fixing part (520) form an included angle.

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