CN211975420U - Shielding pump with water shortage protection - Google Patents
Shielding pump with water shortage protection Download PDFInfo
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- CN211975420U CN211975420U CN202020645431.4U CN202020645431U CN211975420U CN 211975420 U CN211975420 U CN 211975420U CN 202020645431 U CN202020645431 U CN 202020645431U CN 211975420 U CN211975420 U CN 211975420U
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- water shortage
- bearing seat
- water
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Abstract
The utility model discloses a canned motor pump with water shortage protection, which comprises a pump body, a motor and a water shortage protection mechanism; the pump body comprises a pump shell and an impeller arranged in the pump shell; the motor comprises a motor shell, a stator and a rotor which are arranged in the motor shell, and a rotating shaft fixedly connected with the rotor, wherein one end of the rotating shaft is fixedly connected with the impeller; the water shortage protection mechanism comprises a cooling pipe communicated with the water outlet, a top block with one end fixedly connected with a spring and a current sensor arranged at the lower end of the top block, and a first channel and a second channel which are perpendicular to each other are arranged on the upper bearing seat. The water shortage protection mechanism utilizes the impact force of a medium to control the distance between the top block and the current sensor, can greatly improve the detection of water shortage protection on the water flow rate, feed back the water shortage state in time, shorten the feedback time, can avoid the water pump to be used under the water shortage state, and has high safety and long service life.
Description
Technical Field
The utility model relates to a pumping equipment technical field especially relates to a take canned motor pump of lack of water protection.
Background
The motor and the pump of the canned motor pump are connected into a whole, the stator winding and the rotor winding of the canned motor pump are respectively arranged in the sealed metal cylinder body, and the whole rotor body is completely immersed in the medium, so that a totally-enclosed structure without rotary sealing with the outside is formed. The pump is a pump without a pump shaft dynamic sealing structure.
In the process of the shield pump working, when water in a pipeline is pumped out, a stator and a rotor convert electric power into mechanical energy and heat energy through a rotating shaft and an impeller, if no medium flows through for cooling, the converted heat energy cannot be taken away through water cooling, the generated heat can cause that a packing of the pump is burnt out due to overhigh temperature, a bearing is burnt out due to overhigh temperature, and the impeller of the pump can be deformed due to overhigh temperature.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take canned motor pump of lack of water protection to solve the problem that above-mentioned prior art exists, shorten lack of water feedback time, can avoid the water pump to use under the state of lacking water, improve canned motor pump's security and life.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a take canned motor pump of lack of water protection, including the pump body, motor and lack of water protection mechanism. The pump body includes the pump casing and sets up in the inside impeller of pump casing, be provided with water inlet and delivery port on the pump casing.
The motor comprises a motor shell, a stator and a rotor, wherein the stator and the rotor are arranged in the motor shell, the rotor is fixedly connected with a rotating shaft, and the rotating shaft is respectively and rotatably connected with an upper bearing seat and a lower bearing seat through bearings; one end of the rotating shaft is fixedly connected with the impeller.
The water shortage protection mechanism comprises a cooling pipe communicated with the water outlet, a top block with one end fixedly connected with a spring and a current sensor arranged at the lower end of the top block, the upper bearing seat is provided with a first channel and a second channel which are vertical to each other, and one ends of the first channel and the second channel, which are close to the outer surface of the upper bearing seat, are sealed; the other end of the spring is fixedly arranged on the upper bearing seat; the current sensor is fixedly arranged on the lower end face where the first channel and the second channel are intersected; the other end of the cooling pipe is communicated with the opening end of the first channel; the other end of the second channel is communicated with the cavity below the upper bearing seat.
The pump shell, the lower bearing seat, the motor shell and the upper bearing seat are fixedly connected with each other in a sealing mode.
Preferably, the bearing is a carbon-graphite bearing.
Preferably, a shielding sleeve is arranged between the stator and the rotor.
Preferably, the rotating shaft and the impeller are detachably and fixedly connected through a key.
Preferably, the outer side of the spring is wrapped with an insulating layer.
Preferably, the kicking block is cylindrical, current sensor includes ring shape steel sheet and sets up in the insulating piece of ring shape steel sheet below, the cross-sectional diameter of kicking block and current sensor's cross-sectional external diameter all are greater than the diameter of first passageway.
Preferably, an exhaust valve is arranged on the upper bearing seat.
Preferably, a first insulating sealing cylinder and a second insulating sealing cylinder are respectively arranged at one end of the first channel and one end of the second channel, which are close to the outer surface of the upper bearing seat; the other end of the spring is fixedly arranged on the lower end face of the first insulating sealing cylinder.
The utility model discloses a following technological effect: the utility model discloses a pump body, motor and water shortage protection mechanism to detect the operating condition of the pump body through water shortage protection mechanism, and cool down and lubricate upper and lower bearing, rotor respectively through medium from the top down. Because the sealing device of the rotating shaft of the traditional centrifugal pump is eliminated, the centrifugal pump can completely avoid leakage.
The water shortage protection mechanism utilizes the impact force of a medium to control the distance between the top block and the current sensor, can greatly improve the detection of water shortage protection on the water flow rate, feed back the water shortage state in time, shorten the feedback time, can avoid the water pump to be used under the water shortage state, and has high safety and long service life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partially enlarged view of a in fig. 1.
The pump comprises a pump body 1, a pump shell 11, an impeller 12, a water inlet 13, a water outlet 14, a motor 2, a motor shell 21, a stator 22, a rotor 23, a rotating shaft 24, an upper bearing seat 25, a lower bearing seat 26, a shielding sleeve 27, a water shortage protection mechanism 3, a cooling pipe 31, a top block 32, a current sensor 33, a first channel 34, a second channel 35, a first insulating sealing cylinder 36, a second insulating sealing cylinder 37 and a spring 38.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1-2, the utility model provides a canned motor pump of area lack of water protection, including the pump body 1, motor 2 and lack of water protection mechanism 3. The pump body 1 comprises a pump housing 11 and an impeller 12 arranged inside the pump housing 11, wherein a water inlet 13 and a water outlet 14 are arranged on the pump housing 11.
The motor 2 comprises a motor housing 21, a stator 22 and a rotor 23 which are arranged inside the motor housing 21, wherein the rotor 23 is fixedly connected with a rotating shaft 24, and a shielding sleeve 27 is arranged between the stator 22 and the rotor 23. The shield 27 separates the rotor 23 from the stator 22, and the rotor 23 operates in a transported medium, and the power thereof is transmitted to the rotor 23 through the magnetic field of the stator 22. The rotating shaft 24 is respectively and rotatably connected with an upper bearing seat 25 and a lower bearing seat 26 through bearings; the bearing is a carbon-graphite bearing, the carbon-graphite bearing has good self-lubricating property and chemical stability, and has very high temperature resistance, and the service temperature can reach 350 ℃. One end of the rotating shaft 24 is detachably and fixedly connected with the impeller 12 through a key.
The water shortage protection mechanism 3 comprises a cooling pipe 31 communicated with the water outlet 14, a top block 32 with one end fixedly connected with a spring 38 and a current sensor 33 arranged at the lower end of the top block 32; the upper bearing seat 25 is provided with a first channel 34 and a second channel 35 which are perpendicular to each other, and one ends of the first channel 34 and the second channel 35, which are close to the outer surface of the upper bearing seat 25, are respectively provided with a first insulating sealing cylinder 36 and a second insulating sealing cylinder 37; the other end of the spring 38 is fixedly disposed on the lower end face of the first insulating seal cylinder 36. The inner core of the spring 38 is made of steel, and the outer side of the inner core is wrapped with an insulating layer.
The current sensor 33 is fixedly arranged on the lower end surface of the intersection of the first channel 34 and the second channel 35; the top block 32 is cylindrical, the current sensor 33 comprises a circular steel sheet and an insulating sheet arranged below the circular steel sheet, and the diameter of the section of the top block 32 and the outer diameter of the section of the current sensor 33 are both larger than the diameter of the first channel (34); the other end of the cooling pipe 31 communicates with the open end of the first passage 34; the other end of the second passage 35 communicates with the cavity below the upper bearing housing 25.
The pump shell 11, the lower bearing seat 26, the motor shell 21 and the upper bearing seat 25 are in sealing fixed connection with each other. The upper bearing seat 25 is provided with an exhaust valve.
The working process is as follows:
the medium enters the impeller 12 from the water inlet 13, the stator 22 transmits energy to the rotor 23 through the magnetic field, so that the rotor 23 rotates to drive the rotating shaft 24 to rotate, the impeller 12 starts to work as the impeller 12 is fixedly connected with the rotating shaft 24, and the medium moves to the pump shell 11 under the action of the centrifugal force of the impeller 12 and reaches the water outlet 14; a part of the medium moves below the top block 32 through the cooling pipe 31 and the first channel 34, and due to the certain pressure of the medium, the top block 32 and the spring 38 are compressed upwards, so that the medium reaches the second channel 35 through the first channel 34 and then reaches the cavity formed by the pump housing 11, the lower bearing seat 26, the motor housing 21 and the upper bearing seat 25, and the medium flows out of the device through the bearing, the rotor 23 and the bearing from top to bottom in sequence.
The spring 38 is internally electrified with low-voltage current, the current in the spring 38 is transmitted to the top block 32, and when the top block is in contact with the current sensor 33, the current on the top block is transmitted to the current sensor 33, which indicates that no medium passes between the top block 32 and the current sensor 33, namely the medium is reduced to be unable to jack the top block 32, and the impeller is in an idle running state. The current sensor 33 transmits an electric signal to the PLC controller, the PLC controller controls the stator to be powered off, and the shielding pump stops working.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. The utility model provides a canned motor pump of area lack of water protection which characterized in that: comprises a pump body (1), a motor (2) and a water shortage protection mechanism (3); the pump body (1) comprises a pump shell (11) and an impeller (12) arranged inside the pump shell (11), wherein a water inlet (13) and a water outlet (14) are formed in the pump shell (11);
the motor (2) comprises a motor shell (21), a stator (22) and a rotor (23) which are arranged inside the motor shell (21), wherein the rotor (23) is fixedly connected with a rotating shaft (24), and the rotating shaft (24) is respectively and rotatably connected with an upper bearing seat (25) and a lower bearing seat (26) through bearings; one end of the rotating shaft (24) is fixedly connected with the impeller (12);
the water shortage protection mechanism (3) comprises a cooling pipe (31) communicated with the water outlet (14), a top block (32) with one end fixedly connected with a spring (38) and a current sensor (33) arranged at the lower end of the top block (32), the upper bearing seat (25) is provided with a first channel (34) and a second channel (35) which are perpendicular to each other, and one ends of the first channel (34) and the second channel (35) close to the outer surface of the upper bearing seat (25) are sealed; the other end of the spring (38) is fixedly arranged on the upper bearing seat (25); the current sensor (33) is fixedly arranged on the lower end face where the first channel (34) and the second channel (35) are intersected; the other end of the cooling pipe (31) is communicated with the opening end of the first channel (34); the other end of the second channel (35) is communicated with a cavity below the upper bearing seat (25);
the pump shell (11), the lower bearing seat (26), the motor shell (21) and the upper bearing seat (25) are in sealing fixed connection with each other.
2. The canned motor pump with water shortage protection as claimed in claim 1, wherein: the bearing is a carbon-graphite bearing.
3. The canned motor pump with water shortage protection as claimed in claim 1, wherein: a shielding sleeve (27) is arranged between the stator (22) and the rotor (23).
4. The canned motor pump with water shortage protection as claimed in claim 1, wherein: the rotating shaft (24) is detachably and fixedly connected with the impeller (12) through a key.
5. The canned motor pump with water shortage protection as claimed in claim 1, wherein: the outer side of the spring (38) is wrapped with an insulating layer.
6. The canned motor pump with water shortage protection as claimed in claim 1, wherein: the kicking block (32) are cylindrical, current sensor (33) include the ring shape steel sheet and set up the insulating piece in ring shape steel sheet below, the cross-sectional diameter of kicking block (32) and the cross-sectional external diameter of current sensor (33) all are greater than the diameter of first passageway (34).
7. The canned motor pump with water shortage protection as claimed in claim 1, wherein: an exhaust valve is arranged on the upper bearing seat (25).
8. The canned motor pump with water shortage protection as claimed in claim 1, wherein: one ends of the first channel (34) and the second channel (35) close to the outer surface of the upper bearing seat (25) are respectively provided with a first insulating sealing cylinder (36) and a second insulating sealing cylinder (37); the other end of the spring (38) is fixedly arranged on the lower end face of the first insulating sealing cylinder (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020645431.4U CN211975420U (en) | 2020-04-26 | 2020-04-26 | Shielding pump with water shortage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020645431.4U CN211975420U (en) | 2020-04-26 | 2020-04-26 | Shielding pump with water shortage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211975420U true CN211975420U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020645431.4U Active CN211975420U (en) | 2020-04-26 | 2020-04-26 | Shielding pump with water shortage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211975420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814925A (en) * | 2020-12-31 | 2021-05-18 | 蔡长权 | A kind of pump |
-
2020
- 2020-04-26 CN CN202020645431.4U patent/CN211975420U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814925A (en) * | 2020-12-31 | 2021-05-18 | 蔡长权 | A kind of pump |
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