Pump connector beneficial to motor test and installation

Abstract

The utility model relates to the field of pipeline pumps, and discloses a pump connector beneficial to motor test and installation, which comprises a pump shell, a motor, a connector body and a pump part are sequentially arranged in the pump shell, the pump shell is provided with an exhaust port at the position of the motor, the periphery of the connector body is connected with a support ring of the connector body through spokes, and the support ring is provided with a U-shaped opening. The exhaust port sinks inwards along the pump shell to form a tubular protrusion protruding out of the inner wall of the pump shell, the shape of the U-shaped opening is slightly larger than that of the protrusion of the exhaust port, and the peripheral face of the supporting ring is connected to the inner wall of the pump shell in an abutting mode. According to the pipeline pump, due to the fact that the U-shaped opening is formed, the connecting body can pass through the protrusion of the exhaust port in the pump shell, the motor and the connecting body can be assembled and debugged outside in advance, then the motor and the connecting body are installed in the pump shell, the installation and debugging steps are simplified, the debugging time is shortened, and the assembly and production efficiency of the pipeline pump is improved.

Description

Technical Field

[0001] The utility model relates to the field of pipeline pumps, in particular to a pump connection which is beneficial to motor testing and installation. Background Art

[0002] A pipeline pump is a type of single-suction single-stage or multi-stage centrifugal pump. Because its inlet and outlet are in the same straight line and have the same inlet and outlet diameters, it resembles a section of a pipeline and can be installed at any position of the pipeline, so it is named a pipeline pump (also known as a booster pump). In the prior art, a pump motor and a pump unit are arranged inside the pump casing of the pipeline pump, and the pump motor is connected to the pump unit through a connection.

[0003] Prior art includes a utility model patent with announcement number CN215109638U announced by the State Intellectual Property Office on December 10, 2021. The patent discloses a mounting seat, a motor mounting structure and a pipeline pump, including a front circular groove in the middle of the front end face of the base body, a rear circular groove in the middle of the rear end face of the base body, an assembly through hole penetrating the rear circular groove at the bottom of the front circular groove, the front circular groove, the rear circular groove and the assembly through hole are coaxial, and a drainage through hole penetrating the outer peripheral surface of the base body is formed on the side wall of the front circular groove; a plurality of flow holes are formed on the base body from front to back, and the flow holes are respectively not connected to the drainage through hole, the front circular groove, the assembly through hole and the rear circular groove.

[0004] Although this patented technical solution can firmly connect the motor and the pump casing together, in actual use, the casing of the pipeline pump will have an inwardly recessed exhaust hole at the motor position to discharge the air inside the impeller compartment to ensure the stability of the water flow and water pressure when pumping water. From this patented technical solution, it can be seen that the connection is usually set to a complete circle, which fits the inner diameter of the casing to ensure the stability of the connection. Therefore, when assembling the pipeline pump, the motor needs to be inserted from one end of the casing and the connection from the other end, so that the connection will not be blocked by the inwardly recessed exhaust hole during installation, and the two are aligned to complete the assembly of the pipeline pump. During the assembly process, it is necessary to adjust the position of the connection and the motor inside the shell. The internal space of the shell is relatively small, and the connection and the inner wall of the shell are closely matched, which is very difficult to adjust. Once there is a deviation in the fixed position between the connection and the motor, it will cause vibration when the output shaft rotates, generate noise and affect the service life of the pipeline pump. At this time, the connection and the motor need to be removed from the inside of the pipeline pump and reinstalled and debugged, which makes the installation and debugging process of the pipeline pump very complicated and the debugging time is long, affecting the assembly and production efficiency of the pipeline pump. For this reason, a pump connection that is conducive to motor testing and installation is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a pump connection that is conducive to motor testing and installation, aiming to improve the problems of troublesome installation and debugging between the connection and the motor during the pipeline pump assembly process in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pump connection that is conducive to motor testing and installation, which includes a pump casing, in which a motor, a connecting body, and a pump part are arranged in sequence, the pump casing is provided with an exhaust port at the position of the motor, and the outer periphery of the connecting body is provided with a support ring connected to the connecting body through spokes, the support ring has a U-shaped opening, and the outer peripheral surface of the support ring is abutted and connected to the inner wall of the pump casing.

[0007] As a further description of the above technical solution:

[0008] A central axis hole is provided at the center of the connecting body, and a drainage port penetrating the connecting body is provided on the inner wall of the central axis hole, wherein the position of the drainage port is opposite to the position of the U-shaped port.

[0009] As a further description of the above technical solution:

[0010] The exhaust port is recessed inwardly along the pump housing to form a tubular protrusion protruding from the inner wall of the pump housing, and the U-shaped opening is slightly larger than the protrusion of the exhaust port.

[0011] As a further description of the above technical solution:

[0012] The pump housing is detachably connected to a water outlet node inside, the outer peripheral surface of the water outlet node is detachably connected to a motor housing, the motor housing is detachably connected to a connecting fixing plate at one end away from the water outlet node, and the outer side of the connecting fixing plate is detachably connected to the inner end surface of the connecting body.

[0013] As a further description of the above technical solution:

[0014] An exhaust cavity is formed between the pump housing and the motor housing, and the interior of the exhaust cavity is communicated with the inner side of the exhaust port.

[0015] As a further description of the above technical solution:

[0016] The output shaft is rotatably connected inside the central shaft hole, and the right end surface of the connecting body is detachably connected to the impeller chamber, and the outer periphery of the impeller chamber is fixedly connected to the inside of the pump casing.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the utility model, by setting a U-shaped opening, the connecting body can be conveniently passed through the protrusion of the exhaust port inside the pump casing, so that the connecting body and the motor can enter from one end of the pump casing, so that the motor and the connecting body can be assembled and debugged in advance in a convenient place, and then installed into the pump casing after passing the test, which is very convenient and quick, and can greatly reduce the difficulty of installing and debugging the motor, improve the labor productivity of the operators, and reduce the manufacturing cost.

[0019] 2. In the utility model, when the pipeline pump is arranged in a horizontal position, the U-shaped mouth can be rotated to the upper position to serve as an exhaust channel, so that when the pipeline pump is working, the air inside the impeller chamber can quickly enter the exhaust cavity through the U-shaped mouth at the top and be discharged through the exhaust port, thereby reducing the occurrence of air leakage, ensuring the stability of water flow and water pressure during pumping, and ensuring the stable operation of the pump.

[0020] 3. In the utility model, by setting a drain port, when the seal connected to the outside of the main body fails, the water in the water pump can be discharged out of the pump through the drain port, thereby preventing water from entering the motor and causing damage to the motor. At the same time, water discharged from the drain port can also remind the staff that there is a problem with the seal and timely maintenance is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional schematic diagram of a pump connection proposed by the utility model that is beneficial to motor testing and installation;

[0022] Figure 2 The utility model provides a schematic cross-sectional view of a pipeline pump connected to a pump that is convenient for motor testing and installation.

[0023] Legend:

[0024] 1. Connecting body; 2. Support ring; 3. U-shaped mouth; 4. Center shaft hole; 5. Drainage outlet; 6. Pump casing; 7. Exhaust port; 8. Water outlet section; 9. Motor casing; 10. Connecting fixing plate; 11. Exhaust chamber; 12. Output shaft; 13. Impeller compartment. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1-Figure 2The utility model provides an embodiment: a pump connection that is conducive to motor testing and installation, including a connecting body 1, a pump casing 6 and an exhaust port 7 opened in the pump casing 6. The outer periphery of the connecting body 1 is connected to the connecting body 1 through a support ring 2 via spokes. The support ring 2 is provided with a U-shaped opening 3. When the submersible pump is used horizontally, it is necessary to ensure that the U-shaped opening 3 is always at the top of the support ring 2 to ensure the passage of gas. The outer peripheral surface of the support ring 2 is abutted and connected to the inner wall of the pump casing 6. The connecting body 1 is fixedly supported inside the pump casing 6 by the support ring 2. The exhaust port 7 on the pump casing 6 is recessed inwardly along the pump casing 6 to form a tubular protrusion protruding from the inner wall of the pump casing 6. The U-shaped opening 3 is slightly larger than the protrusion of the exhaust port 7, so that the U-shaped opening 3 can pass through the exhaust port 7.

[0027] Reference Figure 2 A water outlet node 8 is detachably connected to the inside of the pump casing 6, and a motor casing 9 for protecting the inside of the motor from water ingress is detachably connected to the outer peripheral surface of the water outlet node 8. An exhaust chamber 11 for convenient gas passage is formed between the pump casing 6 and the motor casing 9. The inside of the exhaust chamber 11 is connected to the inner side of the exhaust port 7. The exhaust port 7 can discharge the air inside the exhaust chamber 11. A connecting fixing plate 10 for fixing is detachably connected to the end of the motor casing 9 away from the water outlet node 8. The outer side of the connecting fixing plate 10 is detachably connected to the inner end face of the connecting body 1 to fix the connecting body 1 to the motor.

[0028] Reference Figure 1-Figure 2 A central axis hole 4 is provided at the center of the connecting body 1, and an output shaft 12 is rotatably connected inside the central axis hole 4. An impeller bin 13 is detachably connected to the right end face of the connecting body 1. The outer periphery of the impeller bin 13 is fixedly connected to the inside of the pump casing 6. The output shaft 12 is located inside the impeller bin 13 and is connected to the impeller, driving the impeller to rotate and generate suction. A drain port 5 is provided on the inner wall of the central axis hole 4 and passes through the connecting body 1. When water passes through the central axis hole 4, it will be discharged by the drain port 5. The position of the drain port 5 is opposite to that of the U-shaped port 3, so that the drain port 5 is at the lowest end when the pipeline pump is used horizontally.

[0029] Working principle: When you want to assemble the pipeline pump, first fix the connection body 1 with the connection fixing plate 10, and then fix the connection fixing plate 10 to the motor housing 9. At this time, turn on the motor, and the motor drives the output shaft 12 to rotate. Observe the rotation of the output shaft 12. If the output shaft 12 rotates very smoothly without noise and vibration, align the U-shaped mouth 3 with the exhaust port 7, and then put the motor and the connection body 1 into the pump housing 6. The support ring 2 will not be blocked by the exhaust port 7, and then install the subsequent parts, thereby simplifying the steps of installation and debugging. There is no need to adjust the position inside the pump housing 6, which is more convenient to use. When the pump starts working, the pump will generate suction to suck water into the pump, and the water will enter the impeller chamber 13. At this time, the air in the impeller chamber 13 will enter the exhaust chamber 11 through the U-shaped mouth 3 at the top, and then be discharged through the exhaust port 7, so that the air inside the impeller chamber 13 is quickly discharged, and the normal operation of the packaging pipeline pump. When the pump is used for a long time, gaps may appear in the seal. At this time, some water will penetrate into the gap between the output shaft 12 and the center shaft hole 4. At this time, the water can pass through the drain port 5 and be discharged from the drain port 5 to the outside of the pump, thereby preventing water from entering the motor and causing short circuit damage to the motor. At the same time, when water is found to flow out of the drain port 5, it means that there is a problem with the internal seal of the pump, which is convenient for maintenance.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pump connection that is convenient for testing and installing a motor, comprising a pump housing (6), wherein a motor, a connection body (1), and a pump portion are sequentially arranged in the pump housing (6), and an exhaust port (7) is arranged at the position of the motor, characterized in that: The outer periphery of the connecting body (1) is provided with a support ring (2) connected to the connecting body (1) via spokes, the support ring (2) has a U-shaped opening (3), and the outer peripheral surface of the support ring (2) is abutted against the inner wall of the pump casing (6).

2. A pump connection that is convenient for motor testing and installation according to claim 1, characterized in that: The connection body (1) is provided with a central axis hole (4) at the center of the circle, and the inner wall of the central axis hole (4) is provided with a drainage opening (5) penetrating the connection body (1), and the position of the drainage opening (5) is opposite to that of the U-shaped opening (3).

3. A pump connection that is convenient for motor testing and installation according to claim 1, characterized in that: The exhaust port (7) is recessed inwardly along the pump housing (6) to form a tubular protrusion protruding from the inner wall of the pump housing (6), and the U-shaped opening (3) is larger than the protrusion of the exhaust port (7).

4. A pump connection that is convenient for motor testing and installation according to claim 1, characterized in that: The pump housing (6) is internally detachably connected to a water outlet node (8), the outer peripheral surface of the water outlet node (8) is detachably connected to a motor housing (9), the end of the motor housing (9) away from the water outlet node (8) is detachably connected to a connecting fixing plate (10), and the outer side of the connecting fixing plate (10) is detachably connected to the inner end surface of the connecting body (1).

5. A pump connection that is convenient for motor testing and installation according to claim 1, characterized in that: An exhaust chamber (11) is formed between the pump housing (6) and the motor housing (9), and the interior of the exhaust chamber (11) is connected to the inside of the exhaust port (7).

6. A pump connection that is convenient for motor testing and installation according to claim 2, characterized in that: An output shaft (12) is rotatably connected inside the central shaft hole (4), and an impeller chamber (13) is detachably connected to the right end surface of the connecting body (1), and the outer periphery of the impeller chamber (13) is fixedly connected to the inside of the pump casing (6).

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