Pump assembling equipment, working method of pump assembling equipment and pump assembling method

Abstract

The invention provides a pump assembling device, a working method of the pump assembling device and a pump assembling method, a pump to be assembled comprises a pump cover, a pump shell assembly and a stator, the pump assembling device is characterized by comprising a heating mechanism, a stator press-fitting mechanism, a pump shell assembly positioning device and a pump cover press-fitting mechanism, the heating mechanism comprises a heating device, and the stator press-fitting mechanism comprises a stator press-fitting mechanism, a pump shell assembly positioning device and a pump cover press-fitting mechanism. The stator press-fitting mechanism comprises a stator positioning seat; the pump cover press-fitting mechanism comprises a pump cover positioning device; the pump assembling equipment comprises a press-fitting station, when the pump assembling equipment is in the press-fitting station, the stator positioning seat is located below the pump shell assembly positioning device, the pump cover positioning device is located above the pump shell assembly positioning device, and at least part of the pump shell assembly can be located on the inner side of the heating device. The stator positioning seat and the pump cover positioning device can get close to the pump shell assembly positioning device from the upper direction and the lower direction. The pump assembly steps are simplified, the pump assembly efficiency is improved, and the pump assembly cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pump assembly, and in particular to a pump assembly device, a working method of the pump assembly device, and a pump assembly method. Background Art

[0002] The pump generally includes a pump cover and a pump casing assembly assembled together, and a stator assembled in the pump casing assembly. At present, during assembly, the pump cover and the pump casing assembly are generally assembled together by bolts, and then the pump cover and pump casing assembly is placed in an oven for heating, the heated pump cover and pump casing assembly is placed on a press-fitting tool, and the stator is pressed into the pump casing assembly and then cooled. It can be seen that the assembly steps are cumbersome, resulting in low pump assembly efficiency, and the transportation of the high-temperature pump cover and pump casing assembly has high requirements for transportation equipment and installation measures. Summary of the invention

[0003] The present application provides a pump assembly device, wherein the pump to be assembled comprises a pump cover, a pump housing assembly and a stator, and is characterized in that the pump assembly device comprises a heating mechanism, a stator pressing mechanism, a pump housing assembly positioning device and a pump cover pressing mechanism, wherein the heating mechanism comprises a heating device, the stator pressing mechanism comprises a stator positioning seat, and the pump cover pressing mechanism comprises a pump cover positioning device;

[0004] The pump assembly equipment includes a pressing station. When in the pressing station, the stator positioning seat is located below the pump casing assembly positioning device, and the pump cover positioning device is located above the pump casing assembly positioning device. At least part of the pump casing assembly can be located on the inner side of the heating device, and the stator positioning seat and the pump cover positioning device can approach the pump casing assembly positioning device from both the upper and lower directions.

[0005] The pump assembly equipment can heat the pump housing assembly and press the pump cover and the stator into the heated pump housing assembly. The pump assembly equipment is used to assemble the pump, so that the assembly steps are simplified and the pump assembly efficiency is improved. In addition, since the high-temperature pump cover and pump housing assembly assembly does not need to be transported, the requirements for installation measures can also be reduced, thereby reducing the pump assembly cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A schematic structural diagram of an embodiment of a pump assembly device provided in the present application;

[0007] Figure 2 for Figure 1 Schematic diagram of some structures in ;

[0008] Figure 3 for Figure 1 A structural diagram of the station switching mechanism in FIG.

[0009] Figure 4 for Figure 1Schematic diagram of some structures in ;

[0010] Figure 5 for Figure 1 A schematic diagram of the structure of the pump casing assembly positioning device;

[0011] Figure 6 for Figure 1 The pump casing assembly positioning device in the pump casing assembly positions the structural diagram of the pump casing assembly in the state;

[0012] Figure 7 for Figure 1 A schematic diagram of the structure of the stator positioning seat in FIG.

[0013] Figure 8 for Figure 1 A schematic diagram of the structure of the pump cover positioning device;

[0014] Fig. 9 for Figure 1 Schematic diagram of some structures in .

[0015] The following are the descriptions of the reference numerals:

[0016] 01 pump cover, 02 pump housing assembly, 03 stator;

[0017] A Pressing station, B Loading station

[0018] 10 heating mechanism, 101 driving device, 102 heating device;

[0019] 20 stator press-fitting mechanism, 201 stator positioning seat, 2011 stator positioning hole, 2012 fixing hole, 2013 avoidance hole, 202 stator ejection device, 2021 sliding rod, 2022 first sliding part, 2023 second sliding part, 2024 first elastic member, 2025 second elastic member, 2026 ejector rod, 2027 fixing part, 2028 cover shell;

[0020] 30 pump casing assembly positioning device, 301 pump casing assembly seat, 301a positioning through hole, 302 pump casing assembly positioning column, 303 pump casing assembly seat fixing portion;

[0021] 40 pump cover pressing mechanism, 401 pump cover positioning device, 4011 pump cover positioning seat, 4011a pump cover positioning hole, 4011b through hole, 4012 pump cover clamping part, 4012a clamping jaw mounting seat, 4012b clamping jaw, 4013 pump cover positioning column, 402 second power mechanism;

[0022] 50 Cooling mechanism.

[0023] 60 station switching mechanism, 601 turntable, 602 driving device, 603 first turntable support, 6031 first roller, 6032 first bracket, 604 second turntable support, 6041 second roller, 6042 second bracket;

[0024] 70 Pump cover feeding device;

[0025] 80 pump cover transfer mechanism, 801 driving portion, 802 clamping portion;

[0026] 90 thermal insulation device;

[0027] 100 upper bracket;

[0028] 110 substrate;

[0029] 120 first power mechanism. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The present application provides a pump assembly device, a working method of the pump assembly device and a pump assembly method. The pump to be assembled includes a pump cover 01 , a pump housing assembly 02 and a stator 03 .

[0032] like Figure 1 As shown, the pump assembly equipment at least includes a heating mechanism 10, a stator pressing mechanism 20, a pump housing assembly positioning device 30, a pump cover pressing mechanism 40 and a pressing station A.

[0033] The heating mechanism 10 includes a heating device 102 .

[0034] The stator press-fitting mechanism 20 includes a stator positioning seat 201 .

[0035] The pump cover pressing mechanism 40 includes a pump cover positioning device 401 .

[0036] At the press-fitting station A, if Figure 2 As shown, the stator positioning seat 201 is located below the pump housing assembly positioning device 30, and the pump cover positioning device 401 is located above the pump housing assembly positioning device 30. At least part of the pump housing assembly 02 can be located inside the heating device 102. The stator positioning seat 201 can be close to the pump housing assembly positioning device 30, that is, the stator positioning seat 201 can move upward from the bottom of the pump housing assembly positioning device 30. The pump cover positioning device 401 can be close to the pump housing assembly positioning device 30, that is, the pump cover positioning device 401 can move downward from the top of the pump housing assembly positioning device 30.

[0037] The working method of the pump assembly device includes: the heating device 102 is close to the pump housing assembly positioning device 30 and is sleeved on the outside of the pump housing assembly positioning device 30, so that at least part of the pump housing assembly 02 is located in the heating device 102. The heating device 102 is powered on to generate heat. The stator positioning seat 201 approaches the pump housing assembly positioning device 30 from the bottom of the pump housing assembly positioning device 30, so that the stator 03 enters the pump housing assembly 02. The pump cover positioning device 401 approaches the pump housing assembly positioning device 30 from the top of the pump housing assembly positioning device 30, so that at least part of the pump cover 01 enters the pump housing assembly 02.

[0038] The pump assembly method comprises the following steps: heating the pump housing assembly 02, pressing the stator 03 and / or the pump cover 01 into the heated pump housing assembly 02, stopping heating the pump housing assembly 02, and cooling the pump housing assembly 02 assembled with the stator 03 and / or the pump cover 01.

[0039] The pump assembly device and the pump assembly method described above are capable of heating the pump housing assembly 02 and pressing the pump cover 01 and the stator 03 into the heated pump housing assembly 02 .

[0040] Using the above-mentioned pump assembly equipment and pump assembly method to assemble a pump simplifies the assembly steps and improves the pump assembly efficiency. In addition, since there is no need to transport the high-temperature pump cover and pump casing assembly, the requirements for installation measures can also be reduced, thereby reducing the pump assembly cost.

[0041] In addition, the above-mentioned pump assembly equipment causes the pump casing assembly 02 to be heated at the pressing station A, so it can continue to be pressed at the original position after heating, thereby ensuring that the time interval between the two processes of heating and pressing is short. This is beneficial to improving the assembly efficiency and avoiding the problem that the pump casing assembly 02 has shrunk before pressing, causing damage to the pump casing assembly during the pressing process.

[0042] In addition, when the above-mentioned pump assembly equipment presses the stator 03, the stator positioning seat 201 moves upward. At this time, the pump cover positioning device 401 can move downward synchronously to press the pump cover 01. Therefore, the stator 03 and the pump cover 01 can be pressed synchronously, which is conducive to improving the assembly efficiency.

[0043] In a specific embodiment, Figure 1 and Figure 2 As shown, the heating device 10 includes a driving device 101, and the driving device 101 drives the heating device 102 to approach the pump housing assembly positioning device 30, so that at least part of the pump housing assembly 02 is located inside the heating device 102. In order to facilitate the pump housing assembly 02 to enter the inside of the heating device 102, the heating device 102 can be set in a sleeve shape, and specifically can be formed by spirally winding a heating coil.

[0044] In a specific embodiment, Figure 1 and Figure 2As shown, the stator press-fitting mechanism 20 includes a transmission device 202. Figure 2 As shown, the pump assembly device includes a first power mechanism 120. At the press-fitting station A, the first power mechanism 120 is located below the stator press-fitting mechanism 20, and the transmission device 202 is located between the first power mechanism 120 and the stator positioning seat 201. When the stator is press-fitted, the output end of the first power mechanism 120 can push the transmission device 202 upward, and the transmission device 202 pushes the stator positioning seat 201 upward and pushes the stator out of the stator positioning seat 201, so that the stator at least partially enters the pump housing assembly.

[0045] In a specific embodiment, Figure 1 and Figure 2 As shown, the pump cover pressing mechanism 40 includes a second power mechanism 402, and the pump cover positioning device 401 is connected to the output end of the second power mechanism 402. Figure 8 When the pump cover is press-fitted, the output end of the second power mechanism 402 drives the pump cover positioning device 401 and the pump cover to move downward together, so that the pump cover at least partially enters the pump housing assembly.

[0046] In a specific embodiment, Figure 1 and Figure 2 As shown, the pump assembly equipment includes a cooling mechanism 50, and the air outlet of the cooling mechanism 50 is arranged near the heating mechanism 10. At the press-fitting station A, the cooling mechanism 50 can blow air to the pump housing assembly positioning device 30 to cool the pump housing assembly 02 assembled with the stator 03 and / or the pump cover 01. The pump housing assembly 02 assembled with the stator 03 and / or the pump cover 01 can shrink after cooling, so as to form a tight fit with the stator 03 and / or the pump cover 01. Specifically, the cooling mechanism 50 can be arranged on the side of the pump housing assembly positioning device 30, so as to avoid the cooling mechanism 50 interfering with the press-fitting action.

[0047] In a specific embodiment, Figure 1As shown, the pump assembly equipment includes a loading station B and a station switching mechanism 60. The station switching mechanism 60 includes a turntable 601 and a driving device 602. The driving device 602 can drive the turntable 601 to rotate around the vertical axis. In addition, the pump assembly equipment includes a plurality of (two or more, two in the figure) stator pressing mechanisms 20 and a plurality of (two or more, two in the figure) pump casing assembly positioning devices 30. The stator pressing mechanism 20 and the pump casing assembly positioning device 30 are fixed to the turntable 601, and the stator pressing mechanism 20 and the pump casing assembly positioning device 30 are switched between the pressing station A and the loading station B through the station switching mechanism 60. With such a design, by rotating the turntable 601, the stator positioning seat 201 and the pump casing positioning device 30 located at the loading station B can be switched to the pressing station A and / or the stator positioning seat 201 and the pump casing positioning device 30 located at the pressing station A can be switched to the loading station B, so that pressing and loading can be carried out simultaneously, thereby further improving the pump assembly efficiency. Moreover, when loading materials, the loaders are at a certain distance from the pressing station A, so they are not easily scalded by the heating device 102 located at the pressing station A, thereby improving the operation safety.

[0048] Specifically, when only one pressing station A and one loading station B are provided, the pressing station A and the loading station B are preferably arranged at 180° with respect to the rotation axis of the turntable 601, so that when loading materials, the loading personnel are far away from the pressing station A, and the operation safety is higher. Of course, the number of pressing stations A and loading stations B is not limited to one.

[0049] In a specific embodiment, the stator pressing mechanism 20 is arranged at intervals along the circumference of the turntable 601, and the pump casing assembly positioning device 30 is arranged at intervals along the circumference of the turntable 601. The stator pressing mechanism 20 and the pump casing assembly positioning device 30 are arranged in a one-to-one correspondence. In the vertical direction, the stator pressing mechanism 20 is located below the pump casing assembly positioning device 30.

[0050] In a specific embodiment, Figure 1 As shown, the station switching mechanism 60 includes a first turntable support portion 603 and a second turntable support portion 604. The first turntable support portion 603 and the second turntable support portion 604 jointly support the turntable 601 (combined with Figure 3 understand).

[0051] In a specific embodiment, Figure 1As shown, the pump assembly equipment includes a pump cover feeding device 70 and a pump cover transfer mechanism 80. The pump cover 01 can be pre-loaded onto the pump cover feeding device 70 before press-fitting, and then, during press-fitting, the pump cover transfer mechanism 80 transfers the pump cover from the pump cover feeding device 70 located at the press-fitting station A to the pump cover positioning device 401. Specifically, multiple (two or more, two in the figure) pump cover feeding devices 70 can be provided. When the above-mentioned station switching mechanism 60 is provided, the pump cover feeding device 70 can be fixed to the turntable 601. In this design, by rotating the turntable 601, the pump cover feeding device 70 located at the feeding station B can be switched to the press-fitting station A and / or the pump cover feeding device 70 located at the press-fitting station A can be switched to the feeding station B.

[0052] In a specific embodiment, Figure 1 As shown, the pump cover transfer mechanism 80 includes a driving part 801 and a clamping part 802. The driving part 801 drives the clamping part 802 to move, so that the clamping part 802 can automatically clamp the pump cover, automatically release the pump cover, and automatically transfer the pump cover from the pump cover feeding device 70 located at the feeding station B to the pump cover positioning device 30 (combined with the pump cover feeding device 70 located at the feeding station B). Fig. 9 understand).

[0053] In a specific embodiment, Figure 1 As shown, the pump assembly equipment includes a heat insulating device 90, and the heat insulating device 90 is surrounded by the feeding station B. The heat insulating device 90 can prevent the heat of the press-fitting station A from being transferred to the feeding station B, thereby further improving the safety of the operation.

[0054] In a specific embodiment, Figure 1 As shown, the heat insulation device 90 adopts a vertical plate structure that is substantially perpendicular to the turntable 601. In this way, the heat insulation device 90 is light in weight, small in size, and occupies less space on the turntable 601. Of course, in actual implementation, the structure of the heat insulation device 90 can be flexibly designed as needed, and is not limited to the vertical plate structure. For example, it can also be an arched cover structure.

[0055] In a specific embodiment, Figure 1 As shown, the pump assembly device includes a base plate 110, a second power mechanism 402 is installed above the base plate 110 through an upper bracket 100, and a first power mechanism 120 (see Figure 2 ) is installed below the base plate 110, the turntable 601 is fixed above the base plate 100 through the first turntable support part 603 and the second turntable support part 604, and the other structures of the pump assembly equipment are also assembled on the base plate 110, making the pump assembly equipment a whole.

[0056] In a specific embodiment, Figure 3As shown, the first turntable support part 603 includes a first bracket 6032 and a first roller 6031, and the second turntable support part 604 includes a second bracket 6042 and a second roller 6041. The first roller 6031 abuts against the top surface of the turntable 601, and the second roller 6041 abuts against the bottom surface of the turntable 601. This design can not only reliably support the turntable 601, but also ensure that the turntable 601 rotates smoothly.

[0057] In a specific embodiment, Figure 4 As shown, the transmission device 202 includes a push rod 2026, a second sliding part 2023 and a first elastic member 2024. In the vertical direction, the first elastic member 2024 is located between the second sliding part 2023 and the stator positioning seat 201. The second sliding part 2023 and the push rod 2026 are fixedly connected. The upper end of the push rod 2026 can extend into the stator positioning seat 201. The output end of the first power mechanism 120 can push the push rod 2026 or the second sliding part 2023 to move toward the stator positioning seat 201.

[0058] In a specific embodiment, Figure 4 As shown, the transmission device 202 further includes a slide bar 2021 and a first slide part 2022; the first slide part 2022 and the second slide part 2023 can slide up and down along the slide bar 2021, the stator positioning seat 201 is fixed to the first slide part 2022, and the position of the first slide part 2022 facing the upper end of the push rod 2026 is provided with a through portion for the push rod 2026 to pass through. The position of the stator positioning seat 201 facing the upper end of the push rod 2026 is also provided with a through portion for the push rod 2026 to pass through ( Figure 7 The pump assembly device including the transmission device brings the stator positioning seat 201 close to the pump housing assembly positioning device 30 by the following steps:

[0059] S1, the first power mechanism 120 pushes the push rod 2026 upward, and the first sliding part 2022 and the second sliding part 2023 slide upward along the sliding rod 2021 until the stator positioning seat 201 abuts against the pump housing assembly positioning device 30;

[0060] S2, the first power mechanism 120 continues to push the push rod 2026 upward, the second sliding part 2023 continues to slide upward along the sliding rod 2021, and the first sliding part 2022 cannot continue to slide upward because the stator positioning seat 20 and the pump housing assembly positioning device 30 collide, thereby causing the distance between the first sliding part 2022 and the second sliding part 2023 to shorten, the first elastic member 2024 is compressed, and the upper end of the push rod 2026 passes through the first sliding part 2022 and the stator positioning seat 201 upward, thereby ejecting the stator from the stator positioning seat 201 into the pump housing assembly;

[0061] S3, the first power mechanism 120 moves in the reverse direction. At this time, the push rod 2026 loses its upward thrust, and the first elastic member 2024 pushes the second sliding portion 2023 to return downward.

[0062] In a specific embodiment, Figure 4 As shown, the transmission device further includes a second elastic member 2025 and a fixing portion 2027. The fixing portion 2027 is fixed below the turntable 601 through the slide bar 2021. The fixing portion 2027 is located below the second sliding portion 2026. The second elastic member 2025 is connected between the first sliding portion 2022 and the fixing portion 2027 (the connection method is not limited, for example, it can be hooked with a hook). In this case, in the above step S2, the second elastic member 2025 is stretched, and in the above step S3, the second elastic member 2025 pulls the first sliding portion 2022 to reset downward.

[0063] In a specific embodiment, the transmission device further includes a cover 2028 (see Figure 2 ), the above-mentioned components of the transmission device are located in the cover 2028.

[0064] In a specific embodiment, Figure 5 and Figure 6 As shown, the pump housing assembly positioning device 30 includes a pump housing assembly seat 301 and a pump housing assembly seat fixing portion 303. The pump housing assembly seat fixing portion 303 is fixedly connected below the pump housing assembly seat 301. The pump housing assembly seat fixing portion 303 is provided with an avoidance structure ( Figure 6 The pump housing assembly seat 301 is provided with a positioning through hole 301a, and the pump housing assembly 02 is inserted into the positioning through hole 301a. The pump housing assembly seat fixing portion 303 can be fixed above the turntable 601. When so arranged, the position of the turntable 601 facing the positioning through hole 301a is also provided with an avoidance structure ( Figure 4 The stator 03 is pushed upward by the push rod 2026 of the transmission device through the pump housing assembly seat fixing portion 303, the turntable 601, and the bottom end opening of the positioning through hole 301a to be pressed into the pump housing assembly 02. In addition, the outer periphery of the pump housing assembly seat fixing portion 303 can be provided with a connection hole (303a in the figure) for connecting to the heat insulation device 90d to improve the installation reliability of the heat insulation device 90.

[0065] In a specific embodiment, Figure 5 and Figure 6 As shown, the pump housing assembly positioning device 30 may further include a pump housing assembly positioning column 302. The pump housing assembly positioning column 302 is extended in the vertical direction. The lower end of the pump housing assembly positioning column 302 is fixedly connected to the pump housing assembly positioning seat 301. The pump housing assembly positioning column 302 is inserted into the flange hole of the pump housing assembly 02.

[0066] In actual implementation, the specific structure of the pump casing assembly positioning device 30 can be flexibly designed according to the structure of the pump casing assembly to be assembled, as long as it can ensure that the pump casing assembly can be reliably positioned.

[0067] In a specific embodiment, Figure 7 As shown, the stator positioning seat 201 is provided with a stator positioning hole 2011 , and in the positioning state, the stator 03 is inserted into the stator positioning hole 2011 . Figure 7 In the embodiment, the stator positioning seat 201 is further provided with a fixing hole 2012 , through which the stator positioning seat 201 is fixedly connected to the first sliding portion 2022 of the transmission device.

[0068] In actual implementation, the specific structure of the stator positioning seat 201 can be flexibly designed according to the structure of the stator to be assembled, as long as it can ensure that the stator can be reliably positioned.

[0069] In a specific embodiment, Figure 8 As shown, the pump cover positioning device 401 includes a pump cover positioning seat 4011 and a pump cover clamping portion 4012. The pump cover positioning seat 4011 includes a pump cover positioning chamber 4011a for inserting the pump cover. A through hole 4011b is provided on the side wall of the pump cover positioning chamber 4011a. The pump cover clamping portion 4012 is assembled on the pump cover positioning seat 4011 and at least a part of the pump cover clamping portion 4012 can extend into the pump cover positioning chamber 4011a through the through hole 4011b.

[0070] In a specific embodiment, Figure 8 As shown, the pump cover clamping part 4012 includes a clamping claw mounting part 4012a and a clamping claw 4021b. The clamping claw mounting part 4012a is slidably assembled on the pump cover positioning seat 4011, and the clamping claw 4021b is fixedly connected to the clamping claw mounting part 4012a. The clamping claw 4021b extends into the pump cover positioning hole 4011a through the through hole 4011b. When the clamping claw mounting part 4012a slides relative to the pump cover positioning seat 4011, the clamping claw 4021b can move in the through hole 4011b to clamp or release the pump cover.

[0071] In a specific embodiment, Figure 8 As shown, in order to improve the reliability of pump cover positioning, the pump cover positioning device 401 further includes a pump cover positioning column 4013, and the pump cover positioning column 4013 is extended in the vertical direction and matched with the positioning hole on the pump cover.

[0072] The above specific examples are used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A pump assembly device, wherein the pump to be assembled comprises a pump cover, a pump housing assembly and a stator, It is characterized in that The pump assembly device comprises a heating mechanism (10), a stator press-fitting mechanism (20), a pump housing assembly positioning device (30) and a pump cover press-fitting mechanism (40), wherein the heating mechanism (10) comprises a heating device (102), the stator press-fitting mechanism (20) comprises a stator positioning seat (201), and the pump cover press-fitting mechanism (40) comprises a pump cover positioning device (401); The pump assembly equipment comprises a press-fitting station (A). When in the press-fitting station (A), the stator positioning seat (201) is located below the pump casing assembly positioning device (30), and the pump cover positioning device (401) is located above the pump casing assembly positioning device (30). At least part of the pump casing assembly can be located on the inner side of the heating device (102), and the stator positioning seat (201) and the pump cover positioning device (401) can approach the pump casing assembly positioning device (30) from both upper and lower directions.

2. The pump assembly device according to claim 1, It is characterized in that The stator press-fitting mechanism (20) comprises a transmission device (202), the transmission device (202) comprises a push rod (2026), a second sliding portion (2023) and a first elastic member (2024), the first elastic member (2024) being located between the second sliding portion (2023) and the stator positioning seat (201) in a vertical direction, the second sliding portion (2023) and the push rod (2026) being fixedly connected, and the upper end of the push rod (2026) being able to extend into the stator positioning seat (201); The pump assembly equipment comprises a first power mechanism (120). At the press-fitting station (A), the first power mechanism (120) is located below the stator press-fitting mechanism (20). The output end of the first power mechanism (120) can push the push rod (2026) or the second sliding part (2023) to move toward the stator positioning seat (201).

3. The pump assembly device according to claim 2, It is characterized in that The transmission device (202) comprises a sliding rod (2021) and a first sliding part (2022); The first sliding part (2022) and the second sliding part (2023) can both slide up and down along the sliding rod (2021); the stator positioning seat (201) is fixed to the first sliding part (2022); and the first sliding part (2022) and the stator positioning seat (201) are both provided with a passing portion for the push rod (2026) to pass through at positions opposite to the upper end of the push rod (2026).

4. The pump assembly device according to claim 1, It is characterized in that The pump casing assembly positioning device (30) comprises a pump casing assembly seat (301) and a pump casing assembly seat fixing portion (303). The pump casing assembly seat (301) is provided with a positioning through hole (301a) for inserting the pump casing assembly, and the pump casing assembly seat fixing portion (303) is fixedly connected below the pump casing assembly seat (301). The pump casing assembly seat fixing portion (303) is provided with an avoidance structure for the stator to pass through at a position directly opposite to the positioning through hole (301a).

5. The pump assembly apparatus according to claim 1, It is characterized in that The pump cover positioning device (401) comprises a pump cover positioning seat (4011) and a pump cover clamping portion (4012); the pump cover positioning seat (4011) comprises a pump cover positioning chamber (4011a) for inserting the pump cover; the side walls around the pump cover positioning chamber (4011a) are provided with through holes (4011b); at least part of the pump cover clamping portion (4012) can extend into the pump cover positioning chamber (4011a) through the through holes (4011b); the pump cover pressing mechanism (40) comprises a second power mechanism (402), and the pump cover positioning device (401) is connected to the output end of the second power mechanism (402).

6. The pump assembly apparatus according to claim 1, It is characterized in that The pump assembly equipment includes a pump cover loading device (70) and a pump cover transfer mechanism (80), the pump cover can be pre-loaded onto the pump cover loading device (70), and the pump cover transfer mechanism (80) can transfer the pump cover from the pump cover loading device (70) located at the pressing station (A) to the pump cover positioning device (401).

7. The pump assembly device according to any one of claims 1 to 6, It is characterized in that The pump assembly equipment includes a loading station (B), the pump assembly equipment includes a station switching mechanism (60), the station switching mechanism (60) includes a turntable (601) and a driving device (602), the driving device (602) can drive the turntable (601) to rotate around a vertical axis, the pump assembly equipment includes a plurality of stator pressing mechanisms (20) and a plurality of pump casing assembly positioning devices (30), the stator pressing mechanisms (20) and the pump casing assembly positioning devices (30) are fixed to the turntable (601), and the stator pressing mechanisms (20) and the pump casing assembly positioning devices (30) are switched between the pressing station (A) and the loading station (B) through the station switching mechanism (60).

8. The pump assembly apparatus according to claim 7, It is characterized in that The stator pressing mechanism (20) is arranged in sequence at intervals along the circumference of the turntable (601), and the pump casing assembly positioning device (30) is arranged in sequence at intervals along the circumference of the turntable (601). The stator pressing mechanism (20) and the pump casing assembly positioning device (30) are arranged in a one-to-one correspondence, and along the vertical direction, the stator pressing mechanism (20) is located below the pump casing assembly positioning device (30).

9. The pump assembly device according to any one of claims 1 to 6, It is characterized in that The pump assembly equipment comprises a cooling mechanism (50), the air outlet of the cooling mechanism (50) is arranged close to the heating mechanism (10), and at the pressing station (A), the cooling mechanism (50) can blow air toward the pump housing assembly positioning device (30).

10. A method for operating a pump assembly device, wherein the pump to be assembled comprises a pump housing assembly, a pump cover and a stator, It is characterized in that The pump assembly device comprises a heating mechanism (10), a stator press-fitting mechanism (20), a pump housing assembly positioning device (30) and a pump cover press-fitting mechanism (40), wherein the heating mechanism (10) comprises a heating device (102), the stator press-fitting mechanism (20) comprises a stator positioning seat (201), and the pump cover press-fitting mechanism (40) comprises a pump cover positioning device (401); The working method comprises: The heating device (102) is close to the pump casing assembly positioning device (30) and is sleeved on the outside of the pump casing assembly positioning device (30); The heating device (102) generates heat when powered on; The stator positioning seat (201) approaches the pump casing assembly positioning device (30) from above the pump casing assembly positioning device (30), and the pump cover positioning device (401) approaches the pump casing assembly positioning device (30) from below the pump casing assembly positioning device (30); The heating device (102) stops heating and moves away from the pump housing assembly positioning device (30).

11. The method of operating the pump assembly device according to claim 10, It is characterized in that The stator pressing mechanism (20) comprises a transmission device (202), the transmission device (202) comprises a push rod (2026), a second sliding part (2023) and a first elastic member (2024), a slide rod (2021) and a first sliding part (2022), in the vertical direction, the first elastic member (2024) is located between the second sliding part (2023) and the stator positioning seat (201), the second sliding part (2023) and the push rod (2026) are fixedly connected, the upper end of the push rod (2026) can extend into the stator positioning seat (201), and the first sliding part (2022) and the second sliding part (2023) can both move along the vertical direction. The sliding rod (2021) slides up and down, the stator positioning seat (201) is fixed to the first sliding part (2022), and the first sliding part (2022) and the stator positioning seat (201) are both provided with a passing part for the push rod (2026) to pass through at the position of the upper end of the push rod (2026), and the pump assembly equipment includes a first power mechanism (120), and when in the press-fitting station (A), the first power mechanism (120) is located below the stator press-fitting mechanism (20), and the output end of the first power mechanism (120) can push the push rod (2026) or the second sliding part (2023) to move toward the stator positioning seat (201); The working method enables the stator positioning seat (201) to be close to the pump casing assembly positioning device (30) by the following steps: S1, the first power mechanism (120) pushes the push rod (2026) upward, and the first sliding part (2022) and the second sliding part (2023) both slide upward along the sliding rod (2021) until the stator positioning seat (201) abuts against the pump housing assembly positioning device (30); S2, the first power mechanism (120) continues to push the push rod (2026) upwards, the second sliding part (2023) slides upwards along the sliding rod (2021), the distance between the first sliding part (2022) and the second sliding part (2023) is shortened, the first elastic member (2024) is compressed, and the upper end of the push rod (2026) passes through the first sliding part (2022) and the stator positioning seat (201) upwards; S3: The first power mechanism (120) moves in the reverse direction, and the first elastic member (2024) pushes the second sliding portion (2023) to return to its original position downward.

12. A pump assembly method, wherein the pump to be assembled comprises a pump cover, a pump housing assembly and a stator, It is characterized in that The pump assembly method comprises the following steps: heating the pump housing assembly; Pressing the stator and / or the pump cover into the heated pump housing assembly; The heating of the pump housing assembly is stopped, and the pump housing assembly assembled with the stator and / or the pump cover is cooled.

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