Electronic water pump locked-rotor testing device

Abstract

The utility model relates to the technical field of electronic water pumps, in particular to an electronic water pump locked-rotor testing device which comprises a clamping assembly and a blocking assembly, the clamping assembly is used for clamping an electronic water pump, the blocking assembly comprises an installation sleeve, a blocking rod and a blocking piece, at least part of the installation sleeve is located in a water pump inlet, and the blocking piece is located in the installation sleeve. The stop lever is located in the mounting sleeve and can stretch out of the mounting sleeve in the direction close to the impeller, and a stop piece is connected to the end, facing the electronic water pump, of the stop lever and can penetrate through the protective support to be matched with the outer edges of the blades. The electronic water pump is clamped through the clamping assembly, at least part of the mounting sleeve of the blocking assembly is located in the inlet of the water pump, a blocking piece is driven to penetrate through a protection support and be matched with the outer edge of a blade through movement of a blocking rod, and therefore an impeller of the electronic water pump is physically blocked, and locked-rotor of the electronic water pump is achieved on the premise that disassembly is not conducted, and a power source is not needed; and the locked-rotor of the electronic water pump can be realized only by manpower, so that the limitation on a use scene is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic water pumps, in particular to an electronic water pump stall testing device. Background Art

[0002] With the expansion of the application field of electronic water pumps, the structure of electronic water pumps is also developing in the direction of miniaturization and integration. Due to the limitation of their structure, the existing electronic water pumps cannot be disassembled during the stall test, so the existing test methods cannot be used for the stall test. In addition, considering the actual application scenarios of the electronic water pump stall test, not all test sites can provide power sources such as compressed air, hydraulic pumps or electric motors.

[0003] Therefore, there is an urgent need for a device that does not rely on a power source and can perform an electronic water pump stall test without disassembly. Utility Model Content

[0004] The utility model aims to provide an electronic water pump stall test device, so as to realize the stall test of the electronic water pump without relying on a power source and without disassembling.

[0005] The utility model provides an electronic water pump stall test device, which is used for performing a stall test on the electronic water pump. The electronic water pump is provided with an impeller and a water pump inlet, a protective bracket is installed at the water pump inlet, the water pump inlet and the impeller are coaxially arranged, the impeller includes a plurality of blades, the electronic water pump stall test device comprises a clamping assembly and a blocking assembly, the clamping assembly comprises a first baffle and a second baffle, the first baffle and the second baffle are connected by an adjusting rod, the adjusting rod is used to make the first baffle and the second baffle close to each other to clamp the electronic water pump, the blocking assembly comprises a mounting sleeve, a blocking rod and a blocking piece, the mounting sleeve passes through the first baffle or the second baffle and is fixedly connected to the first baffle or the second baffle, at least a part of the mounting sleeve is located in the water pump inlet, the blocking rod is located in the mounting sleeve and can extend out of the mounting sleeve in a direction close to the impeller, one end of the blocking rod facing the electronic water pump is connected with a blocking piece, the blocking piece can pass through the protective bracket and cooperate with the outer edge of the blade.

[0006] As a preferred technical solution for the electronic water pump jam testing device, the clamping assembly also includes an adjusting baffle cylinder and an adjusting nut. The second baffle is arranged at one end of the water pump inlet of the electronic water pump. The mounting sleeve is fixedly connected to the second baffle. One end of the adjusting rod is fixedly connected to the second baffle. The other end of the adjusting rod passes through the first baffle. The first baffle can slide along the adjusting rod. An external thread is arranged on the end of the adjusting rod away from the second baffle. The adjusting nut is threadedly connected to the adjusting rod. The adjusting baffle cylinder is slidably sleeved on the adjusting rod and is located between the adjusting nut and the first baffle.

[0007] As a preferred technical solution for the electronic water pump stall test device, the adjusting rod, the adjusting retaining cylinder and the adjusting nut are each provided in two, the two adjusting rods are arranged at intervals, and the two adjusting retaining cylinders and the two adjusting nuts are respectively provided on the two adjusting rods.

[0008] As the preferred technical solution for the electronic water pump stall test device, the stop rod is a screw rod, a threaded block is fixedly arranged in the mounting sleeve, the screw rod is threadedly connected to the threaded block, and the mounting sleeve is also connected to a locking piece, which is used to limit the rotation of the screw rod.

[0009] As a preferred technical solution for the electronic water pump stall test device, two threaded blocks are provided, and the two threaded blocks are spaced apart along the length direction of the mounting sleeve.

[0010] As a preferred technical solution for the electronic water pump stall test device, an end of the blocking rod away from the electronic water pump is fixedly connected to an operating member, and the operating member is a long strip or disc-shaped structure.

[0011] As a preferred technical solution for the electronic water pump stall test device, the locking piece is fixedly connected to the mounting sleeve, a plurality of locking holes are circumferentially provided on the locking piece, a locking pin is connected to the operating piece, and the locking pin can pass through the locking hole to lock the operating piece on the locking piece.

[0012] As a preferred technical solution for the electronic water pump stall test device, the baffle has a retracted state and an expanded state. When the end of the baffle rod facing the electronic water pump is located in the mounting sleeve, the baffle is in the retracted state; when the end of the baffle rod facing the electronic water pump extends out of the mounting sleeve, the baffle is in the expanded state and is perpendicular to the baffle rod.

[0013] As a preferred technical solution for the electronic water pump stall test device, the baffle includes a first end and a second end, the large end of the first end is connected to the small end of the second end, the edges of the first end and the second end are used to cooperate with the blades, and when the baffle is in a retracted state, at least part of the first end and the second end overlap; when the baffle is in an expanded state, the first end and the second end are flush.

[0014] As a preferred technical solution of the electronic water pump stall test device, the first end and the second end are connected by a torsion spring, and the torsion spring is used to keep the first end and the second end flush.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides an electronic water pump stall test device, which clamps the electronic water pump through a clamping assembly, and at least a portion of a mounting sleeve of the blocking assembly is located in the water pump inlet, and the movement of a blocking rod drives a blocking sheet to pass through a protective bracket and cooperate with an outer edge of a blade, thereby physically blocking the impeller of the electronic water pump, and stalling the electronic water pump without disassembling it. At the same time, no power source is required, and the stalling of the electronic water pump can be achieved only by manpower, and the restriction on the use scene is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a plan view of the electronic water pump stall test device in the embodiment of the utility model;

[0018] Figure 2 for Figure 1 A partial enlarged view of part A;

[0019] Figure 3 This is a schematic diagram of the positional relationship between the baffle and the blade in the embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the cooperation between the baffle and the blade in the embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of the cooperation between the screw rod and the threaded block in the embodiment of the utility model.

[0022] In the figure:

[0023] 100, electronic water pump; 110, water pump inlet; 120, water pump outlet; 130, blades; 140, protective bracket;

[0024] 11. First baffle plate; 12. Second baffle plate; 13. Adjustment rod; 14. Adjustment baffle cylinder; 15. Adjustment nut; 2. Mounting sleeve; 21. Threaded block; 22. Locking member; 3. Baffle rod; 4. Operating member; 5. Baffle plate; 51. First end; 52. Second end. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] like Figure 1-Figure 5As shown, the utility model provides an electronic water pump stall test device, which is used to perform a stall test on an electronic water pump 100. The electronic water pump 100 is provided with an impeller, a water pump inlet 110 and a water pump outlet 120. The impeller includes a plurality of blades 130. The axes of the impeller and the water pump inlet 110 coincide. A protective bracket 140 is installed at the water pump inlet 110 to prevent impurities from entering from the water pump inlet 110 during the operation of the electronic water pump 100 and causing damage to the impeller. The protective bracket 140 is provided with a plurality of spokes distributed radially along the water pump inlet 110. The plurality of spokes are spaced and evenly distributed circumferentially along the water pump inlet 110. The electronic water pump stall test device includes a clamping assembly and a blocking assembly. The clamping assembly is used to clamp the electronic water pump 100. The blocking assembly is used to contact the blades 130 of the electronic water pump 100 and block the impeller from rotating, so as to achieve stall of the electronic water pump 100 from a physical level, thereby completing the stall test of the electronic water pump 100.

[0030] Specifically, the clamping assembly includes a first baffle 11 and a second baffle 12, which are connected by an adjusting rod 13, and the adjusting rod 13 is used to make the first baffle 11 and the second baffle 12 close to each other to clamp the electronic water pump 100. The blocking assembly includes a mounting sleeve 2, a blocking rod 3 and a blade 130, and the mounting sleeve 2 passes through the first baffle 11 or the second baffle 12 and is fixedly connected to the first baffle 11 or the second baffle 12. Specifically, the mounting sleeve 2 vertically passes through one of the first baffle 11 and the second baffle 12 located on the side of the water pump inlet 110 and is fixedly connected thereto. At least part of the mounting sleeve 2 can be located in the water pump inlet 110. The blocking rod 3 is located in the mounting sleeve 2 and can extend out of the mounting sleeve 2 in a direction close to the impeller. A blocking piece 5 is connected to one end of the blocking rod 3 facing the electronic water pump 100, and the blocking piece 5 can pass through the protective bracket 140 and cooperate with the outer edge of the blade 130. By the cooperation between the baffle 5 and the outer edge of the blade 130, when the electronic water pump 100 is subjected to a stall test, the blade 130 exerts a torque on the baffle 5, and the torque exerted on the baffle 5 acts on the baffle rod 3. At this time, the baffle rod 3 is kept relatively fixed in the mounting sleeve 2 to achieve the blocking of the blade 130, thereby preventing the impeller from rotating, thereby achieving the stall of the electronic water pump 100. The electronic water pump 100 is clamped by the clamping assembly, and at least part of the mounting sleeve 2 of the blocking assembly is located in the water pump inlet 110. The movement of the baffle rod 3 drives the baffle 5 to pass through the protective bracket 140 and cooperate with the outer edge of the blade 130, thereby implementing physical blocking on the impeller of the electronic water pump 100, achieving the stall of the electronic water pump 100 without disassembly, and at the same time, no power source is required, and the stall of the electronic water pump 100 can be achieved only by manpower, which has lower restrictions on the use scenario.

[0031] Furthermore, if Figure 1As shown, the clamping assembly also includes an adjustment retaining cylinder 14 and an adjustment nut 15. In this embodiment, the second baffle 12 is arranged at one end of the water pump inlet 110 of the electronic water pump 100, and the mounting sleeve 2 passes through the second baffle 12 and is fixedly connected to the second baffle 12. The first baffle 11 is arranged at the end opposite to the water pump inlet 110, that is, the first baffle 11 is arranged at one end of the base of the electronic water pump 100. One end of the adjustment rod 13 is fixedly connected to the second baffle 12, and the other end of the adjustment rod 13 passes through the first baffle 11 and the first baffle 11 can slide along the adjustment rod 13. The end of the adjustment rod 13 away from the second baffle 12 is provided with an external thread, and the adjustment nut 15 is threadedly connected to the end of the adjustment rod 13 where the external thread is provided. The adjustment retaining cylinder 14 is slidably sleeved on the adjustment rod 13 and is located between the adjustment nut 15 and the first baffle 11. In order to ensure the stability of the clamping assembly for the electronic water pump 100, two adjusting rods 13, adjusting retaining cylinders 14 and adjusting nuts 15 are provided, and the two adjusting rods 13 are arranged at intervals, and the space between the two adjusting rods 13 is sufficient to accommodate the electronic water pump 100, so as to avoid interference in the process of clamping the electronic water pump 100. The two adjusting retaining cylinders 14 and the two adjusting nuts 15 are respectively provided on the two adjusting rods 13.

[0032] When using the clamping assembly to clamp the electronic water pump 100, the electronic water pump 100 is matched with the second baffle 12 and the water pump inlet 110 is inserted into the installation sleeve 2 that passes through the second baffle 12, and then the first baffle 11 is passed through the end of the adjusting rod 13 with an external thread, and the position of the first baffle 11 is adjusted to make it close to the base of the electronic water pump 100, and then the adjusting retaining cylinder 14 is sleeved on the end of the adjusting rod 13 with an external thread, and finally the adjusting nut 15 is screwed in. As the adjusting nut 15 is screwed in, the adjusting retaining cylinder 14 is pressed to push the first baffle 11 close to the second baffle 12, so that the clamping assembly clamps the electronic water pump 100.

[0033] Keeping the blocking rod 3 relatively fixed in the installation sleeve 2 can be achieved in the following ways. The first way is to set the blocking rod 3 and the installation sleeve 2 to be threaded, and set a locking member 22 to lock the blocking rod 3. The blocking rod 3 rotates in the installation sleeve 2 and its end close to the impeller extends out of the installation sleeve 2 until the blocking piece 5 cooperates with the blade 130. The locking member 22 is operated to lock the blocking rod 3 in the installation sleeve 2. At this time, the electronic water pump 100 is powered on for testing. Since the blocking rod 3 is locked in the installation sleeve 2 and cannot rotate, the blade 130 cannot drive the blocking piece 5 to rotate, and the impeller cannot rotate, thereby achieving a stall. The second implementation is to set the blocking rod 3 and the installation sleeve 2 to be in sliding fit, and the sliding fit profile is a rectangular, square, triangular, cross, star or elliptical profile, that is, the cross-sectional shape of the blocking rod 3 along the axis perpendicular to it is one of the above shapes, and the installation sleeve 2 is provided with a hole of a corresponding shape, so that the blocking rod 3 can only slide along the installation sleeve 2, and cannot rotate in the installation sleeve 2 due to structural limitations, which can also prevent the impeller from driving the blocking piece 5 to rotate, thereby achieving a stall. In this embodiment, the first implementation is preferred, that is, the blocking rod 3 and the installation sleeve 2 are set to be threaded and a locking member 22 is provided to lock the blocking rod 3.

[0034] Specifically, the stop rod 3 is set as a screw rod, and a threaded block 21 is fixedly set in the installation sleeve 2. The threaded block 21 is provided with a threaded hole. The screw rod is threadedly connected with the threaded hole of the threaded block 21. The matching relationship between the screw rod and the threaded hole is shown in FIG. Figure 5 As shown. Two thread blocks 21 are provided, and the two thread blocks 21 are arranged at intervals along the length direction of the mounting sleeve 2. One of the thread blocks 21 is provided at one end of the mounting sleeve 2 away from the second baffle 12, and the other thread block 21 is provided at one end of the mounting sleeve 2 close to the second baffle 12. In order to allow the end of the baffle rod 3 close to the impeller and the baffle 5 to have sufficient movement space, the two thread blocks 21 are both located on the side of the second baffle 12 away from the electronic water pump 100. The mounting sleeve 2 is provided with two sections, the first section is a section located on the side of the second baffle 12 away from the electronic water pump 100, and the thread blocks 21 are fixedly connected at both ends, and the second section is a section located on the side of the second baffle 12 facing the electronic water pump 100, and is welded to the first section. The connection mode of the first section and the second baffle 12 is preferably welding connection. The mounting sleeve 2 is also connected with a locking member 22, which is used to limit the rotation of the screw rod to prevent the screw rod from rotating during the blocking process.

[0035] Furthermore, in order to facilitate the operation of the blocking rod 3 to rotate, an operating member 4 is fixedly connected to one end of the blocking rod 3 away from the electronic water pump 100, and the operating member 4 is a long strip or disc-shaped structure. The operating member 4 facilitates the rotation of the blocking rod 3, and the operating member 4 can be abutted against certain specific positions such as the ground, wall or workbench plane, and can also achieve unidirectional prevention of the blocking rod 3 from rotating, and can also achieve the purpose of the stall test.

[0036] Furthermore, the locking member 22 is fixedly connected to the mounting sleeve 2, and the locking member 22 is preferably a disc-shaped structure. The locking member 22 is provided with a plurality of lock holes along its circumference, and a lock pin (not shown in the figure) is connected to the operating member 4, and the lock pin can pass through the lock hole to lock the operating member 4 on the locking member 22. After the baffle 3 is adjusted to the right position, the lock pin is inserted into the corresponding lock hole nearby, so that the baffle 3 cannot rotate, so as to achieve the blocking. In the process of inserting the lock pin into the corresponding lock hole nearby, the baffle 3 will be driven to rotate at a small angle. Since the electronic water pump 100 is not powered on at this time, and the baffle 5 at the end of the baffle 3 cooperates with the blade 130 of the electronic water pump 100, the baffle 5 can drive the impeller of the electronic water pump 100 to rotate at the same angle, and will not cause damage to the blade 130.

[0037] In other embodiments, the locking member 22 can also be set as a locking screw, which is threadedly connected to the mounting sleeve 2 and can abut against the blocking rod 3. After the blocking rod 3 is adjusted into place, the locking screw is operated to lock the blocking rod 3, which can also prevent the blocking rod 3 from rotating, thereby meeting the requirements of the stall test.

[0038] Furthermore, if Figure 1-Figure 4 As shown, the baffle 5 has a retracted state and an expanded state. When the end of the baffle rod 3 facing the electronic water pump 100 is located in the mounting sleeve 2, the baffle 5 is in the retracted state. When the baffle rod 3 extends out of the mounting sleeve 2 toward the end of the electronic water pump 100, the baffle 5 is in the expanded state, and the baffle 5 in the expanded state is perpendicular to the baffle rod 3 and can cooperate with the outer edge of the blade 130 of the electronic water pump 100. The baffle 5 includes a first end 51 and a second end 52, and the large end of the first end 51 and the small end of the second end 52 are connected, and the two can rotate around the connection position, and the baffle rod 3 is fixedly connected to the first end 51 or the second end 52. The first end 51 and the second end 52 are both used to cooperate with the blade 130. When the baffle 5 is in the retracted state, please refer to Figure 2 As shown, at least a portion of the first end 51 and the second end 52 overlap. When the baffle 5 is in the unfolded state, please refer to Figure 4 As shown, the first end 51 and the second end 52 are flush. The baffle 5 is set to have a retracted state and an expanded state, so that when the end of the baffle rod 3 close to the electronic water pump 100 moves in the installation sleeve 2, that is, when the baffle 5 is located in the installation sleeve 2, the first end 51 and the second end 52 overlap, thereby reducing the radial dimension requirements of the installation sleeve 2, so that the radial dimension of the installation sleeve 2 can be reduced, and the electronic water pump 100 with a smaller specification water pump inlet 110 can be applied to the stall test.

[0039] Specifically, the first end 51 and the second end 52 are connected by a torsion spring, the axis of the torsion spring is the axis of relative rotation of the first end 51 and the second end 52, and the two ends of the torsion spring are respectively fixedly connected to the first end 51 and the second end 52. When the baffle 5 is in the expanded state, the torsion spring is in a free state and is used to keep the first end 51 and the second end 52 flush. When the baffle 5 is in the contracted state, the torsion spring is in a compressed state and has elastic potential energy to restore the first end 51 and the second end 52 to the expanded state, so that when the baffle 5 is extended from the mounting sleeve 2, the first end 51 and the second end 52 are expanded under the action of the torsion spring so as to fit with the outer edge of the blade 130.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An electronic water pump stall test device, used for performing a stall test on an electronic water pump (100), wherein the electronic water pump (100) is provided with an impeller and a water pump inlet (110), a protective bracket (140) is installed at the water pump inlet (110), the water pump inlet (110) and the impeller are coaxially arranged, the impeller includes a plurality of blades (130), and is characterized in that: The electronic water pump stall test device comprises: A clamping assembly, the clamping assembly comprising a first baffle (11) and a second baffle (12), the first baffle (11) and the second baffle (12) being connected via an adjusting rod (13), the adjusting rod (13) being used to bring the first baffle (11) and the second baffle (12) closer to each other so as to clamp the electronic water pump (100); A blocking assembly, the blocking assembly comprising a mounting sleeve (2), a blocking rod (3) and a blocking sheet (5); the mounting sleeve (2) passes through the first baffle (11) or the second baffle (12) and is fixedly connected to the first baffle (11) or the second baffle (12); at least a portion of the mounting sleeve (2) is located in the water pump inlet (110); the blocking rod (3) is located in the mounting sleeve (2) and can extend out of the mounting sleeve (2) in a direction close to the impeller; the blocking sheet (5) is connected to one end of the blocking rod (3) facing the electronic water pump (100); the blocking sheet (5) can pass through the protective bracket (140) and cooperate with the outer edge of the blade (130).

2. The electronic water pump stall test device according to claim 1, characterized in that: The clamping assembly also includes an adjusting retaining cylinder (14) and an adjusting nut (15); the second baffle (12) is arranged at one end of the water pump inlet (110) of the electronic water pump (100); the mounting sleeve (2) is fixedly connected to the second baffle (12); one end of the adjusting rod (13) is fixedly connected to the second baffle (12); the other end of the adjusting rod (13) passes through the first baffle (11); the first baffle (11) can slide along the adjusting rod (13); an end of the adjusting rod (13) away from the second baffle (12) is provided with an external thread; the adjusting nut (15) is threadedly connected to the adjusting rod (13); the adjusting retaining cylinder (14) is slidably sleeved on the adjusting rod (13) and is located between the adjusting nut (15) and the first baffle (11).

3. The electronic water pump stall test device according to claim 2, characterized in that: The adjusting rod (13), the adjusting retaining cylinder (14) and the adjusting nut (15) are each provided in pairs, the two adjusting rods (13) are arranged at intervals, and the two adjusting retaining cylinders (14) and the two adjusting nuts (15) are respectively arranged on the two adjusting rods (13).

4. The electronic water pump stall test device according to claim 3, characterized in that: The blocking rod (3) is a screw rod, a threaded block (21) is fixedly arranged inside the installation sleeve (2), the screw rod is threadedly connected to the threaded block (21), and the installation sleeve (2) is also connected to a locking member (22), and the locking member (22) is used to limit the rotation of the screw rod.

5. The electronic water pump stall test device according to claim 4, characterized in that: The number of the threaded blocks (21) is two, and the two threaded blocks (21) are spaced apart along the length direction of the mounting sleeve (2).

6. The electronic water pump stall test device according to claim 5, characterized in that: An end of the blocking rod (3) away from the electronic water pump (100) is fixedly connected to an operating member (4), and the operating member (4) is a long strip or disc-shaped structure.

7. The electronic water pump stall test device according to claim 6, characterized in that: The locking member (22) is fixedly connected to the mounting sleeve (2), and the locking member (22) is provided with a plurality of locking holes along the circumferential direction. The operating member (4) is connected with a locking pin, and the locking pin can pass through the locking hole to lock the operating member (4) on the locking member (22).

8. The electronic water pump stall test device according to any one of claims 1 to 7, characterized in that: The baffle (5) has a retracted state and an expanded state. When one end of the baffle rod (3) facing the electronic water pump (100) is located in the installation sleeve (2), the baffle (5) is in the retracted state; when one end of the baffle rod (3) facing the electronic water pump (100) extends out of the installation sleeve (2), the baffle (5) is in the expanded state, and the baffle (5) is perpendicular to the baffle rod (3).

9. The electronic water pump stall test device according to claim 8, characterized in that: The baffle (5) comprises a first end (51) and a second end (52), wherein the large end of the first end (51) and the small end of the second end (52) are connected, and the edges of the first end (51) and the second end (52) are used to cooperate with the blade (130), and when the baffle (5) is in a retracted state, at least part of the first end (51) and the second end (52) overlap; when the baffle (5) is in an expanded state, the first end (51) and the second end (52) are flush.

10. The electronic water pump stall test device according to claim 9, characterized in that: The first end (51) and the second end (52) are connected by a torsion spring, and the torsion spring is used to keep the first end (51) and the second end (52) flush.

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