Improved shield pump

Abstract

The utility model relates to the technical field of shield pumps, and discloses an improved shield pump which comprises a main body pump, the main body pump comprises a driving motor and a pump shell which are symmetrically arranged, the driving motor is connected with the pump shell through a main shaft, one end of the main shaft is provided with a motor rotor in the driving motor, and the other end of the main shaft is provided with an impeller in the pump shell. The driving motor shell, the driving motor inner shielding sleeve and the pump shell are all made of copper alloy materials, and a water cooling circulation mechanism is arranged on the outer side of the driving motor. According to the utility model, the shaft balancing and stabilizing mechanism is arranged, the shaft balancing and stabilizing mechanism comprises the double ball bearings fixedly sleeved on the outer side of the main shaft, and the supporting structures are arranged on the outer sides of the bearings, so that the whole shaft balancing and stabilizing mechanism plays a role in balancing the main shaft, small-amplitude shaking of the main shaft can be reduced, and the service life of the motor is further prolonged.

Description

Technical Field

[0001] This utility model relates to the field of shielded pump technology, specifically an improved shielded pump. Background Technology

[0002] A canned motor pump is a leak-free pump, also known as a packingless pump. Its working principle is similar to that of a conventional centrifugal pump; both use impeller rotation to generate centrifugal force, which energizes the liquid and allows it to be transported. The difference is that in a canned motor pump, the impeller and motor rotor are mounted on the same shaft, forming a single rotating assembly.

[0003] Existing canned motor pumps still have the following problems in use: Because the motor of the canned motor pump is enclosed by the shielding sleeve, the heat generated by the motor during operation cannot be directly dissipated to the surrounding environment. It can only be dissipated indirectly through the shielding sleeve and pump casing, etc., resulting in a long heat dissipation path and high thermal resistance. Under high load and long-term operation conditions, the heat generated by the motor will increase significantly. If the cooling system cannot dissipate the heat in a timely and effective manner, it can easily lead to excessive motor temperature. In addition, since the impeller and motor rotor of the canned motor pump are mounted on the same shaft, forming an integral rotating component, when this rotating component rotates, the impeller will be impacted by the water, causing the main shaft to wobble slightly, which will affect the service life of the motor. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an improved canned pump that solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an improved canned motor pump, comprising a main pump, the main pump comprising a drive motor and a pump housing arranged symmetrically, the drive motor and the pump housing being connected by a main shaft, a motor rotor inside the drive motor being mounted on one end of the main shaft, and an impeller inside the pump housing being mounted on the other end of the main shaft, the drive motor housing, the inner shielding sleeve of the drive motor and the pump housing being made of copper alloy, a water-cooling circulation mechanism being provided on the outside of the drive motor, two connecting seats being fixedly connected symmetrically at one end of the water-cooling circulation mechanism, and the same radiator being fixedly connected at one end of the two connecting seats, the water-cooling circulation mechanism further comprising two water-cooling jackets fixedly sleeved symmetrically on the outside of the drive motor, the two water-cooling jackets being connected by a first connecting pipe, and the two water-cooling jackets being respectively connected to the radiator by a second connecting pipe.

[0008] As a further improvement of this utility model: a temperature monitoring mechanism is provided between the two water-cooled cooling jackets. The temperature monitoring mechanism includes a temperature sensor fixedly connected to the top of the outer side of the drive motor. The temperature sensor is connected to the radiator controller via a connecting cable.

[0009] As a further embodiment of this utility model: a shaft balancing and stabilizing mechanism is fixedly connected between the drive motor and the pump housing and located outside the main shaft. The shaft balancing and stabilizing mechanism includes a connecting sleeve fixedly connected between the drive motor and the pump housing. The connecting sleeve is a U-shaped sleeve and is coaxial with the main shaft. A through groove is opened on the other side of the connecting sleeve for the main shaft to pass through. A fixing sleeve is provided inside the connecting sleeve. A bearing is fixedly installed inside the fixing sleeve. The inner rotating end of the bearing is fixedly sleeved to the outside of the main shaft. Support columns are fixedly connected to the upper and lower ends and the front and rear sides of the fixing sleeve. The end of the support column away from the fixing sleeve is fixedly connected to the inner wall of the connecting sleeve.

[0010] As a further improvement of this utility model: a first fixing seat is fixedly connected to the middle of the bottom end of the drive motor, and a second fixing seat is fixedly connected to each of the front and rear sides of the bottom end of the pump casing.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, by adopting an optimized pump body structure design, the motor housing, pump housing, and shielding sleeve are made of materials with good thermal conductivity, namely copper alloy, to improve heat conduction efficiency. At the same time, the cooling structure is strengthened, and an integrated water-cooling circulation mechanism is set. A water-cooling jacket is set on the housing, so that the cooling liquid circulates in the jacket, carrying away the heat around the housing and shielding sleeve for cooling. A temperature sensor is also set to monitor the external temperature of the motor in real time.

[0013] 2. In this utility model, by setting up a shaft balancing and stabilizing mechanism, which includes a double ball bearing fixedly sleeved on the outside of the main shaft, and a support structure set on the outside of the bearing, the overall shaft balancing and stabilizing mechanism plays a balancing role for the main shaft, which can reduce its small-amplitude wobbling and thus extend the service life of the motor. Attached Figure Description

[0014] Figure 1 This is a perspective view of the entire utility model;

[0015] Figure 2 This is a three-dimensional view of the main pump of this utility model;

[0016] Figure 3 This is a perspective view of the shaft balancing and stabilizing mechanism of this utility model;

[0017] Figure 4 This is a perspective view of the water-cooled cooling circulation mechanism of this utility model.

[0018] In the diagram: 1. Main pump; 2. Shaft balancing and stabilizing mechanism; 3. Water-cooled circulation mechanism; 11. Drive motor; 12. Pump casing; 13. Main shaft; 14. First fixed seat; 15. Second fixed seat; 21. Connecting sleeve; 22. Through groove; 23. Fixed sleeve; 24. Support column; 25. Bearing; 31. Water-cooled jacket; 32. First connecting pipe; 33. Connecting seat; 34. Cooling radiator; 35. Second connecting pipe; 36. Temperature sensor; 37. Connecting cable. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figures 1-4In this embodiment of the present invention, an improved canned motor pump includes a main pump 1. The main pump 1 includes a drive motor 11 and a pump housing 12 arranged symmetrically. The drive motor 11 and the pump housing 12 are connected by a main shaft 13. One end of the main shaft 13 is equipped with a motor rotor inside the drive motor 11, and the other end of the main shaft 13 is equipped with an impeller inside the pump housing 12. The drive motor 11 housing, the inner shielding sleeve of the drive motor 11, and the pump housing 12 are all made of copper alloy. A water-cooling circulation mechanism 3 is provided on the outside of the drive motor 11. One end of the water-cooling circulation mechanism 3 is fixedly connected to two connecting seats 33 in a symmetrical arrangement. One end of the two connecting seats 33 is fixedly connected to the same radiator 34. The water-cooling circulation mechanism 3 also includes... Two water-cooled cooling jackets 31 are fixedly fitted onto the outside of the drive motor 11 in a symmetrical front-to-back arrangement. The two water-cooled cooling jackets 31 are connected by a first connecting pipe 32, and the two water-cooled cooling jackets 31 are respectively connected to the radiator 34 through a second connecting pipe 35. The whole adopts an optimized pump body structure design. The motor housing, pump housing 12 and shielding sleeve are made of materials with good thermal conductivity, namely copper alloy, to improve heat conduction efficiency. At the same time, the cooling structure is strengthened and an integrated water-cooled cooling circulation mechanism 3 is set. The water-cooled cooling jackets 31 are set on the housing, so that the cooling liquid circulates in the jacket, carrying away the heat around the housing and shielding sleeve for cooling. A temperature sensor 36 is also set to monitor the external temperature of the motor in real time.

[0023] A temperature monitoring mechanism is provided between the two water-cooled cooling jackets 31. The temperature monitoring mechanism includes a temperature sensor 36 fixedly connected to the top of the drive motor 11. The temperature sensor 36 is connected to the radiator 34 controller via a connecting cable 37. The temperature sensor 36 monitors the external temperature of the motor and transmits the temperature data to the radiator 34 controller. The radiator 34 can automatically control the on / off of its internal water pump based on its temperature data. That is, when the temperature is higher than the set value, the water pump works to perform water circulation and heat dissipation. When the temperature is lower than the set value, the water pump stops working and does not perform water circulation and heat dissipation, thus achieving energy saving.

[0024] A shaft balancing and stabilizing mechanism 2 is fixedly connected between the drive motor 11 and the pump housing 12 and located outside the main shaft 13. The shaft balancing and stabilizing mechanism 2 includes a connecting sleeve 21 fixedly connected between the drive motor 11 and the pump housing 12. The connecting sleeve 21 is a U-shaped sleeve and is coaxial with the main shaft 13. A through groove 22 is provided on the other side of the connecting sleeve 21 for the main shaft 13 to pass through. A fixing sleeve 23 is provided inside the connecting sleeve 21. A bearing 25, which is a double ball bearing, is fixedly installed inside the fixing sleeve 23. The inner rotating end of the bearing 25 is fixedly sleeved on the outside of the main shaft 13. Support columns 24 are fixedly connected to the upper and lower ends and the front and rear sides of the fixing sleeve 23. The end of the support column 24 away from the fixing sleeve 23 is fixedly connected to the inner wall of the connecting sleeve 21. The shaft balancing and stabilizing mechanism 2 is set as a whole, which includes a double ball bearing fixedly sleeved on the outside of the main shaft 13. A support structure is provided on the outside of the bearing 25. The shaft balancing and stabilizing mechanism 2 plays a balancing role for the main shaft 13, which can reduce its small-amplitude shaking and thus extend the service life of the motor.

[0025] A first fixed seat 14 is fixedly connected to the middle of the bottom end of the drive motor 11, and a second fixed seat 15 is fixedly connected to the front and rear sides of the bottom end of the pump casing 12. The entire pump body can be fixedly installed at the corresponding installation position by using the two fixed seats in conjunction with the installation components.

[0026] The working principle of this utility model is as follows: When the drive motor 11 is energized, it can output power through the main shaft 13 to drive the impeller inside the pump casing 12 to rotate. When the impeller rotates at high speed, the liquid in the impeller is thrown from the center of the impeller to the outer edge of the impeller under the action of centrifugal force, thus gaining a higher speed and pressure. At the same time as the liquid is thrown to the outer edge of the impeller, a low-pressure zone is formed at the center of the impeller. The pressure in this low-pressure zone is lower than the pressure of the suction liquid surface. Under the action of the pressure difference, the liquid is drawn into the center of the impeller. After the liquid thrown out from the outer edge of the impeller enters the pump casing 12, the flow channel inside the pump casing 12 gradually expands, the flow velocity of the liquid gradually decreases, and part of the kinetic energy is converted into pressure energy, which further increases the pressure of the liquid. Then it is discharged from the pump outlet and transported to the place where it is needed. As long as the impeller continues to rotate, the liquid will be continuously drawn in and discharged, thereby achieving the purpose of continuous liquid transportation.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An improved shielding pump, comprising a main body pump (1), the main body pump (1) comprising a driving motor (11) and a pump shell (12) arranged symmetrically; characterized in that The driving motor (11) and the pump shell (12) are connected by a main shaft (13), and a shaft balance stabilizing mechanism (2) is fixedly connected between the driving motor (11) and the pump shell (12) outside the main shaft (13). The main shaft (13) has a motor rotor in the driving motor (11) at one end, and an impeller in the pump shell (12) at the other end. The driving motor (11) housing, the driving motor (11) inner shield and the pump shell (12) are all made of copper alloy material; The driving motor (11) is provided with a water-cooled cooling circulation mechanism (3) outside, one end of the water-cooled cooling circulation mechanism (3) is fixedly connected with two connecting seats (33) in front and back symmetry, one end of the two connecting seats (33) is fixedly connected with the same cooling plate (34), the water-cooled cooling circulation mechanism (3) further comprises two water-cooled cooling jackets (31) fixedly sleeved outside the driving motor (11) in front and back symmetry; The two water-cooled cooling jackets (31) are connected by a first connecting pipe (32), and the two water-cooled cooling jackets (31) are connected to the cooling plate (34) by a second connecting pipe (35), and a temperature monitoring mechanism is arranged between the two water-cooled cooling jackets (31).

2. The improved canned pump of claim 1, wherein: The temperature monitoring mechanism comprises a temperature sensor (36) fixedly connected to the top end of the driving motor (11), and the temperature sensor (36) is connected to the cooling plate (34) controller through a connecting wire (37).

3. The improved canned pump as claimed in claim 1, wherein: The shaft balance stabilizing mechanism (2) comprises a connecting sleeve (21) fixedly connected between the driving motor (11) and the pump shell (12).

4. The improved canned pump of claim 3, wherein: The connecting sleeve (21) is a U-shaped sleeve and is coaxially arranged with the main shaft (13), and the other side of the connecting sleeve (21) is provided with a through groove (22) for the main shaft (13) to pass through.

5. The improved canned pump of claim 3 wherein: The connecting sleeve (21) is provided with a fixing sleeve (23) inside, the fixing sleeve (23) is fixedly installed with a bearing (25) inside, and the inner side of the bearing (25) is rotatably sleeved with the outer side of the main shaft (13).

6. The improved canned pump of claim 5 wherein: The fixing sleeve (23) is fixedly connected with a support (24) on the upper and lower ends and the front and back sides, and the support (24) is fixedly connected with the inner wall of the connecting sleeve (21) away from the fixing sleeve (23).

7. The improved canned pump of claim 1, wherein: The driving motor (11) is fixedly connected with a first fixing seat (14) at the bottom, and the pump shell (12) is fixedly connected with a second fixing seat (15) at the bottom.

Images