Shield pump with pressurizing and self-sucking functions

Abstract

The utility model relates to the technical field of shield pumps, and discloses a shield pump with pressurizing and self-sucking functions, which comprises a shield pump body, liquid inlet pipes are communicated with both sides of the shield pump body, and a first mounting pipe and a second mounting pipe are fixedly connected to the inner wall of the shield pump body respectively. A first motor and a second motor are fixedly embedded in the first mounting pipe and the second mounting pipe respectively, an output shaft of the first motor penetrates through the first mounting pipe and is fixedly sleeved with a connecting rod, and an output shaft of the second motor penetrates through the second mounting pipe. The shield pump is easy to use, air in a pipeline can be pumped out through the liquid inlet pipes on the two sides for self-suction by starting the first motor and the second motor, the two sets of sealing plugs are arranged in the shield pump body, automatic sealing is achieved through the tension of the tension spring, the backflow phenomenon can be effectively prevented, the rotating connecting rods on the two sides can increase pressure for liquid, and the sealing effect is good. And finally, the liquid can be quickly discharged into a container for storage through a small-pipe-diameter liquid outlet pipe.

Description

A shielded pump with booster and self-priming function Technical Field

[0001] This utility model relates to the field of shielded pump technology, specifically a shielded pump with booster and self-priming function. Background Technology

[0002] A conventional centrifugal pump is driven by a coupling that connects the pump's impeller shaft to the motor shaft, causing the impeller and motor to rotate together. A canned motor pump, however, is a seal-less pump. Both the pump and the drive motor are sealed within a pressure vessel filled with the pumped medium. This pressure vessel has only a static seal, and a wiring harness provides the rotating magnetic field to drive the rotor. This structure eliminates the rotating shaft seal found in traditional centrifugal pumps, thus achieving complete leak-free operation.

[0003] Existing canned pumps with self-priming function cannot prevent liquid backflow, which causes the sucked liquid to backflow due to pressure drop. At that time, some liquid will backflow and remain in the pipeline, causing backflow problems. Therefore, those skilled in the art provide a canned pump with booster self-priming function to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a shielded pump with booster and self-priming function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shielded pump with booster self-priming function, comprising a shielded pump body, with inlet pipes connected to both sides of the shielded pump body, a first mounting pipe and a second mounting pipe fixedly connected to the inner wall of the shielded pump body respectively, and a first motor and a second motor fixedly embedded in the first mounting pipe and the second mounting pipe respectively, the output shaft of the first motor passing through the first mounting pipe and fixedly fitted with a connecting rod, the output shaft of the second motor passing through the second mounting pipe, and multiple impellers arranged in a circular array on the outer wall of the second motor and the outer wall of the connecting rod, two connecting rings symmetrically fixedly connected to the inner wall of the shielded pump body, and sealing plugs passing through and sealingly connected to the two connecting rings, a connecting disc fixedly connected to the opposite side of the two sealing plugs, and multiple tension springs arranged in a circular array on the opposite side of the two connecting discs, the opposite end of the multiple tension springs being fixedly connected to the opposite side of the two connecting rings respectively.

[0006] As a further improvement of this utility model: the shielded pump body is equipped with two filter discs, and the two filter discs are located on both sides of multiple impellers.

[0007] As a further improvement of this utility model: the top of the shielded pump body is connected to a liquid outlet pipe, and the inlet of the liquid outlet pipe is located above the two connecting rings.

[0008] As a further embodiment of this utility model: the two connecting rings are located between the second mounting tube and the first mounting tube, and there are two sets of multiple impellers provided on the outer wall of the connecting rod.

[0009] As a further improvement of this utility model: the first motor and the second motor are arranged in opposite directions, and the multiple impellers are of the same size.

[0010] As a further improvement of this utility model: the bottom of the shielded pump body is fixedly connected to a base, and the bottom of the base has two straight slots that are symmetrically opened through it.

[0011] As a further improvement of this utility model: multiple connecting plates are arranged in a ring array on the outer walls of both the first mounting tube and the second mounting tube, and the multiple connecting plates are fixedly connected to the inner wall of the shielded pump body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] Starting the first and second motors can drive the connecting rod and the output shaft of the second motor to rotate respectively. The rotation of the connecting rod and the output shaft of the second motor can drive multiple impellers on both sides to rotate. The multiple impellers generate suction force through rotation, which draws the liquid into the body of the canned pump through the inlet pipe. When the liquid passes through the inlet pipe, it can be filtered by the filter plate and then enters the body of the canned pump. Then the pressure of the liquid will push open the sealing plug and disengage it from the plug seal with the connecting ring. At this time, liquid can flow in the connecting ring.

[0014] This invention is simple to use. Starting the first and second motors allows the air in the pipeline to be drawn out through the inlet pipes on both sides for self-priming. Two sets of sealing plugs are installed in the body of the shielded pump and automatically sealed by the tension of the spring, which can effectively prevent backflow. The rotating connecting rods on both sides can increase the pressure of the liquid. Finally, the liquid can be discharged into the container for storage through the small-diameter outlet pipe. Attached Figure Description

[0015] Figure 1 is a three-dimensional schematic diagram of the present invention.

[0016] Figure 2 is a three-dimensional exploded view of this utility model;

[0017] Figure 3 is a three-dimensional diagram showing the disassembled first mounting tube and second mounting tube in this utility model;

[0018] Figure 4 is a cross-sectional schematic diagram of this utility model.

[0019] In the diagram: 1. Base; 2. Straight groove hole; 3. Inlet pipe; 4. Shielded pump body; 5. Outlet pipe; 6. Filter plate; 7. Impeller; 8. Connecting rod; 9. First motor; 10. First mounting pipe; 11. Second motor; 12. Connecting ring; 13. Second mounting pipe; 14. Tension spring; 15. Connecting plate; 16. Sealing plug. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4. In this embodiment of the present invention, a shielded pump with a booster self-priming function includes a shielded pump body 4. Both sides of the shielded pump body 4 are connected to inlet pipes 3. A first mounting pipe 10 and a second mounting pipe 13 are fixedly connected to the inner wall of the shielded pump body 4, and a first motor 9 and a second motor 11 are fixedly embedded in the first mounting pipe 10 and the second mounting pipe 13, respectively. The output shaft of the first motor 9 passes through the first mounting pipe 10 and is fixedly fitted with a connecting rod 8. The output shaft of the second motor 11 passes through the second mounting pipe 13. Multiple impellers 7 are arranged in a ring array on the outer wall of the second motor 11 and the outer wall of the connecting rod 8. Two connecting rings 12 are symmetrically fixedly connected to the inner wall of the shielded pump body 4, and sealing plugs 16 are passed through and sealed in the two connecting rings 12. A connecting plate 15 is fixedly connected to the opposite side of the two sealing plugs 16, and multiple tension springs 14 are arranged in a ring array on the side of the two connecting plates 15 that are far apart from each other. The ends of the multiple tension springs 14 that are far apart from each other are fixedly connected to the opposite side of the two connecting rings 12.

[0022] In this embodiment, the shielded pump body 4 is fitted with two filter discs 6, and the two filter discs 6 are located on both sides of the multiple impellers 7.

[0023] In this embodiment, the top of the shielded pump body 4 is connected to an outlet pipe 5, and the inlet of the outlet pipe 5 is located above the two connecting rings 12.

[0024] In this embodiment, the two connecting rings 12 are located between the second mounting tube 13 and the first mounting tube 10, and there are two sets of multiple impellers 7 provided on the outer wall of the connecting rod 8.

[0025] In this embodiment, the first motor 9 and the second motor 11 are arranged in opposite directions, and the multiple impellers 7 are of the same size.

[0026] In this embodiment, a base 1 is fixedly connected to the bottom of the shielded pump body 4, and two straight slot holes 2 are symmetrically opened through the bottom of the base 1.

[0027] In this embodiment, multiple connecting plates are arranged in a ring array on the outer walls of both the first mounting pipe 10 and the second mounting pipe 13, and the multiple connecting plates are fixedly connected to the inner wall of the shielded pump body 4.

[0028] The working principle of this utility model is as follows: Starting the first motor 9 and the second motor 11 can drive the connecting rod 8 and the output shaft of the second motor 11 to rotate respectively. The rotation of the connecting rod 8 and the output shaft of the second motor 11 can drive the multiple impellers 7 on both sides to rotate. The multiple impellers 7 generate suction force through rotation, which draws the liquid into the shielded pump body 4 through the inlet pipe 3. When the liquid passes through the inlet pipe 3, it can be filtered by the filter plate 6 and enter the shielded pump body 4. Then, the pressure of the liquid will push open the sealing plug 16 and disengage it from the insertion seal with the connecting ring 12. At this time, liquid can flow in the connecting ring 12. A container can be installed on the top of the outlet pipe 5 for connection. Finally, the liquid can be transported into the container for storage through the outlet pipe 5. When the sealing plug 16 is not under force, multiple tension springs 14 will pull the connecting plate 15 to always move closer to the connecting ring 12. At that time, the sealing plug 16 can also always be inserted into the connecting ring 12 for sealing, thereby preventing backflow.

[0029] 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. A canned pump with booster self-priming function, comprising a canned pump body (4), characterized in that: Both sides of the shielded pump body (4) are connected to inlet pipes (3). The inner wall of the shielded pump body (4) is fixedly connected to a first mounting pipe (10) and a second mounting pipe (13). The first mounting pipe (10) and the second mounting pipe (13) are respectively fixedly embedded with a first motor (9) and a second motor (11). The output shaft of the first motor (9) passes through the first mounting pipe (10) and is fixedly fitted with a connecting rod (8). The output shaft of the second motor (11) passes through the second mounting pipe (13), and the outer wall of the second motor (11) is fixedly fitted with a connecting rod (8). Multiple impellers (7) are arranged in a ring array on the outer wall of the connecting rod (8). Two connecting rings (12) are symmetrically fixedly connected to the inner wall of the shielded pump body (4). A sealing plug (16) is passed through and sealed in the two connecting rings (12). A connecting plate (15) is fixedly connected to the opposite side of the two sealing plugs (16). Multiple tension springs (14) are arranged in a ring array on the side of the two connecting plates (15) that are far apart from each other. The ends of the multiple tension springs (14) that are far apart from each other are fixedly connected to the opposite side of the two connecting rings (12).

2. A canned pump with booster self-priming function according to claim 1, characterized in that: The shielded pump body (4) is fitted with two filter discs (6), and the two filter discs (6) are located on both sides of multiple impellers (7).

3. A canned pump with booster self-priming function according to claim 1, characterized in that: The top of the shielded pump body (4) is connected to an outlet pipe (5), and the inlet of the outlet pipe (5) is located above the two connecting rings (12).

4. A canned pump with booster and self-priming function according to claim 1, characterized in that: The two connecting rings (12) are located between the second mounting tube (13) and the first mounting tube (10), and there are two sets of multiple impellers (7) provided on the outer wall of the connecting rod (8).

5. A canned pump with booster self-priming function according to claim 1, characterized in that: The first motor (9) and the second motor (11) are arranged in opposite directions, and the multiple impellers (7) are of the same size.

6. A canned pump with booster self-priming function according to claim 1, characterized in that: The bottom of the shielded pump body (4) is fixedly connected to a base (1), and the bottom of the base (1) has two straight slot holes (2) symmetrically through.

7. A canned pump with booster self-priming function according to claim 1, characterized in that: Multiple connecting plates are arranged in a ring array on the outer wall of the first mounting pipe (10) and the second mounting pipe (13), and the multiple connecting plates are fixedly connected to the inner wall of the shielded pump body (4).

Images