A centrifugal pump pressure-resistant intelligent detection device

Abstract

The application discloses a centrifugal pump pressure-resistant intelligent detection device and belongs to the field of centrifugal pumps. The centrifugal pump pressure-resistant intelligent detection device comprises a workbench, a lifting mechanism, a sliding mechanism, a pushing mechanism and a marking mechanism. The application can clean dust adhered to the outer surface of a centrifugal pump shell, prevent dust from adhering to the outer surface of the centrifugal pump shell, prevent the centrifugal pump shell from heating due to the existence of pressure during pressure test, prevent dust from blocking heat transmission, prevent a centrifugal pump shell without defects from being damaged under pressure, affect the accuracy of the centrifugal pump shell pressure test, save resources, realize accurate detection and positioning of the bulge and crack positions of the centrifugal pump shell, improve the detection accuracy, facilitate personnel to directly judge the weak position of the centrifugal pump shell through a large number of tests, reduce the burden of personnel and improve the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal pumps, and in particular to an intelligent pressure resistance detection device for centrifugal pumps. Background Art

[0002] The basic structure of a centrifugal pump consists of six parts: the impeller, pump body, pump shaft, bearings, sealing rings, and stuffing box. The impeller is the core of the centrifugal pump, producing high speed and high output. The impeller's blades play a major role in the pump's performance. The impeller must pass a static balancing test before assembly. The inner and outer surfaces of the impeller must be smooth to reduce frictional losses in the water flow. The pump body, also known as the pump casing, is the main body of the pump. It provides support and fixation and is connected to the bracket that mounts the bearings. The pump shaft connects to the motor through a coupling, transmitting the motor's torque to the impeller, making it the primary component for transmitting mechanical energy. Sliding bearings are lubricated with transparent oil, which should be filled to the oil level. The sealing ring is also known as the leakage ring. The stuffing box primarily consists of packing, a water seal ring, a stuffing box, a stuffing gland, and a water seal tube. The stuffing box's primary function is to seal the gap between the pump casing and the pump shaft, preventing water from escaping and air from entering the pump.

[0003] At present, the pump casing of a centrifugal pump may break at the site of use. When the pump casing breaks, the internal pressure of the pump chamber is maintained. The motor and bearing seat components are pushed back several meters by the impact force generated by the break, causing damage to some equipment including the motor and coupling. This poses a great safety hazard at the construction site. Therefore, during the production process of the centrifugal pump casing, it is necessary to sample and conduct pressure resistance testing. In the existing technology, the centrifugal pump casing is generally placed on a table and a hydraulic mechanism is used to press the centrifugal pump casing from the top to test the pressure resistance of the centrifugal pump by observing whether the centrifugal pump is deformed or distorted under a certain pressure. However, in the actual testing process, it is often observed with the naked eye, and it is impossible to mark the deformation of the casing, resulting in an inability to quickly and accurately understand the weak points of the centrifugal pump casing. In addition, the pump casing does not necessarily deform during the pressure test, but may crack. When the hydraulic mechanism notifies the pump body to press, these cracks will automatically close, resulting in low detection accuracy during the pressure test of the centrifugal pump, which affects the service life of the centrifugal pump. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the existing technology cannot mark the problematic parts of the centrifugal pump casing and cannot accurately understand the weak parts of the centrifugal pump casing, and to propose an intelligent pressure resistance detection device for centrifugal pumps.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An intelligent detection device for the compressive resistance of a centrifugal pump comprises a workbench, a mounting base is fixedly connected to the middle position of the top of the workbench, and a fluorescent lamp is installed at the middle position of the top of the mounting base;

[0007] Also includes:

[0008] A lifting mechanism, which is installed on the top of the workbench and is used to perform pressure resistance testing on the centrifugal pump housing and shield external light sources during the testing process;

[0009] a sliding mechanism, the sliding mechanism being installed inside the lifting mechanism and being used for sliding along the outer surface of the centrifugal pump casing;

[0010] A pushing mechanism, wherein the pushing mechanism is installed on the sliding mechanism;

[0011] The marking mechanism is installed on the pushing mechanism and is always in contact with the workbench under the action of the pushing mechanism. The marking mechanism is used to mark the parts of the centrifugal pump where deformation and cracks occur.

[0012] In order to facilitate the pressure resistance test of the centrifugal pump casing, preferably, the lifting mechanism includes an electric screw, a light-shielding sleeve, a sealing plate, a hydraulic press and a photoelectric switch; the outer wall of the electric screw is connected to the light-shielding sleeve by a thread, the top of the light-shielding sleeve is fitted with the bottom of the sealing plate, and is connected to the sealing plate through a torsion shaft, the hydraulic press is installed in the middle position of the light-shielding sleeve, and the hydraulic part and the telescopic part are located inside the light-shielding sleeve, and the photoelectric switch is installed on the inner wall of the light-shielding sleeve.

[0013] In order to facilitate the centrifugal pump housing to drive the marking mechanism to slide along the outer surface of the centrifugal pump housing when cracks occur, preferably, the sliding mechanism includes an electric slide rod, an electric slider, a liquid storage ring and a liquid injection tube; the outer side wall of the electric slide rod is slidingly connected to the inner side wall of the electric slider, the electric slider is fixedly connected to the outer ring bottom of the liquid storage ring, and the top of the liquid storage ring is fixedly connected to the bottom of the liquid injection tube.

[0014] In order to ensure that the marking mechanism can always fit in with the outer surface of the centrifugal pump housing, the pushing mechanism further includes a fixed plate, a slide groove, a push spring and a slide plate; the slide groove is opened on the fixed plate and passes through the fixed plate, one end of the push spring is fixedly connected to the inner wall of the slide groove, the inner wall of the slide groove is slidably connected to the outer wall of the slide plate, and the outer wall of the slide plate is fixedly connected to the end of the push spring away from the slide groove.

[0015] In order to mark the bulges and cracks on the centrifugal pump casing, the marking mechanism further includes a rolling sleeve, a marking turntable, a liquid guide column and a liquid guide block; the adjacent sides of the rolling sleeve are fixedly connected to the planar portion of the marking turntable, the liquid guide column is attracted and rotationally connected to the rolling sleeve, and the liquid guide column is fixedly connected to the liquid guide block.

[0016] Furthermore, the electric screw is installed on the top of the workbench, the bottom of the light-shielding cover is in contact with the top of the workbench, and the bottom position of the inner wall of the light-shielding cover is in contact with the outer wall of the mounting seat.

[0017] Furthermore, the electric slide rod is mounted on the top of the inner side wall of the light shielding sleeve, and the initial position of the liquid storage ring is in contact with the top of the mounting seat.

[0018] Furthermore, the ends of the fixing plates are fixedly connected to the inner ring of the liquid storage ring, and the fixing plates are arranged in a ring array along the central axis of the liquid storage ring.

[0019] Furthermore, the end of the rolling sleeve is rotatably connected to the adjacent side of the slide, the liquid guide block penetrates the side wall of the liquid storage ring and extends to the interior of the liquid storage ring, and the liquid guide block is arranged in a ring array along the central axis of the liquid storage ring.

[0020] Furthermore, the photoelectric switch is electrically connected to the electric slide rod, and the photoelectric switch is electrically connected to the electric slider.

[0021] Compared with the prior art, the present invention provides an intelligent detection device for centrifugal pump pressure resistance, which has the following beneficial effects:

[0022] 1. The intelligent pressure resistance detection device for centrifugal pumps uses a pushing mechanism and a marking mechanism in coordination. During the pressure resistance test of the centrifugal pump casing, when the shading sleeve is put on the outer surface of the centrifugal pump casing, the marking mechanism is always in contact with the outer surface of the centrifugal pump casing under the action of the pushing mechanism. Dust adhering to the outer surface of the centrifugal pump casing can be cleaned to prevent dust from adhering to the outer surface of the centrifugal pump casing. As a result, during the pressure test, the centrifugal pump casing is heated due to the presence of pressure, and the dust will block the transfer of heat, so that a centrifugal pump casing without defects will be damaged under the action of pressure, affecting the accuracy of the pressure test of the centrifugal pump casing, saving resources, and improving the accuracy of the pressure test.

[0023] 2. The intelligent detection device for the pressure resistance of a centrifugal pump uses a marking mechanism and a pushing mechanism in coordination. When a bulge occurs on the centrifugal pump casing under the action of pressure, when the marker rotates and moves to the bulge position, the marking turntable will contact the liquid guide block under the action of the bulge, so that the marking liquid adheres to the marking turntable, and the marking liquid is applied to the bulge position, thereby realizing accurate detection and positioning of the bulge position of the centrifugal pump casing, improving the accuracy of detection, and facilitating personnel to directly determine the weak parts of the centrifugal pump casing through a large number of tests, reducing the burden on personnel and improving the accuracy of detection.

[0024] 3. The intelligent pressure resistance detection device for centrifugal pumps uses a fluorescent lamp, a sliding mechanism and a marking mechanism in conjunction with each other. When a crack occurs in the centrifugal pump casing during pressure resistance testing, the light from the fluorescent lamp will shine through the crack onto the photoelectric switch, causing the sliding mechanism to drive the marking mechanism to slide along the outer surface of the centrifugal pump casing. When the marking mechanism slides to the crack, the marking mechanism loses the extrusion of the centrifugal pump casing and slides toward the location of the centrifugal pump casing, causing the rolling sleeve to fit the crack of the centrifugal pump casing, marking the crack of the centrifugal pump casing. Moreover, since the marking liquid contains silver halide, it can change color under the irradiation of the fluorescent lamp. Even if the crack automatically closes when the casing loses pressure, the location of the crack can still be observed, thereby reducing the burden on personnel and improving the accuracy of pressure resistance testing.

[0025] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can clean the dust adhered to the outer surface of the centrifugal pump casing to prevent the dust from adhering to the outer surface of the centrifugal pump casing, resulting in the centrifugal pump casing heating up due to the existence of pressure during the pressure test, and the dust will block the transmission of heat, so that the centrifugal pump casing without defects will also be damaged under the action of pressure, affecting the accuracy of the pressure test of the centrifugal pump casing, saving resources, and realizing accurate detection and positioning of bulges and cracks in the centrifugal pump casing, improving the accuracy of detection, and facilitating personnel to directly judge the weak parts of the centrifugal pump casing through a large number of tests, reducing the burden on personnel and improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional structural diagram of an intelligent detection device for compressive resistance of a centrifugal pump proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the middle section structure of a centrifugal pump pressure resistance intelligent detection device proposed by the present invention;

[0028] Figure 3 This is a three-dimensional partially cutaway structural diagram of a centrifugal pump pressure resistance intelligent detection device proposed by the present invention;

[0029] Figure 4 This is a three-dimensional structural diagram of the sliding mechanism of the intelligent pressure resistance detection device for centrifugal pumps proposed by the present invention;

[0030] Figure 5 This is a schematic diagram of the top cross-section structure of the sliding mechanism of the intelligent pressure resistance detection device for centrifugal pumps proposed by the present invention;

[0031] Figure 6 This invention proposes an intelligent detection device for centrifugal pump pressure resistance Figure 5 A in the middle is an enlarged structural diagram;

[0032] Figure 7 This is a three-dimensional structural diagram of the marking mechanism and pushing mechanism of the intelligent pressure resistance detection device for centrifugal pumps proposed by the present invention;

[0033] Figure 8 This is a schematic diagram showing the working state of the shell crack marking mechanism of the intelligent pressure resistance detection device for centrifugal pumps proposed by the present invention;

[0034] Figure 9 This is a structural schematic diagram showing the working status of the shell bulge marking mechanism of the centrifugal pump pressure resistance intelligent detection device proposed by the present invention.

[0035] In the figure: 1. Workbench; 2. Lifting mechanism; 21. Electric screw; 22. Shading sleeve; 23. Sealing plate; 24. Hydraulic press; 25. Photoelectric switch; 3. Sliding mechanism; 31. Electric slide; 32. Electric slider; 33. Liquid storage ring; 34. Liquid injection pipe; 4. Pushing mechanism; 41. Fixed plate; 42. Slide; 43. Pushing spring; 44. Slide plate; 5. Marking mechanism; 51. Rolling sleeve; 52. Marking turntable; 53. Liquid guide column; 54. Liquid guide block; 6. Fluorescent lamp; 7. Mounting seat. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0038] Reference Figure 1-Figure 2, an intelligent detection device for the compressive resistance of a centrifugal pump, comprising a workbench 1, a mounting base 7 being fixedly connected to the middle portion of the top of the workbench 1, and a fluorescent lamp 6 being installed at the middle portion of the top of the mounting base 7;

[0039] Reference Figure 1-Figure 3 , lifting mechanism 2, the lifting mechanism 2 is installed on the top of the workbench 1, and is used to perform pressure resistance testing on the centrifugal pump casing and shield external light sources during the testing process. The lifting mechanism 2 includes an electric screw 21, a light-shielding sleeve 22, a sealing plate 23, a hydraulic press 24 and a photoelectric switch 25; the outer wall of the electric screw 21 is connected to the light-shielding sleeve 22 by a thread, the top of the light-shielding sleeve 22 is fitted with the bottom of the sealing plate 23, and is connected to the sealing plate 23 through a torsion shaft, the hydraulic press 24 is installed in the middle position of the light-shielding sleeve 22, and the hydraulic part and the telescopic part are located inside the light-shielding sleeve 22, the photoelectric switch 25 is installed on the inner wall of the light-shielding sleeve 22, the electric screw 21 is installed on the top of the workbench 1, the bottom of the light-shielding sleeve 22 is fitted with the top of the workbench 1, and the bottom position of the inner wall of the light-shielding sleeve 22 is fitted with the outer wall of the mounting seat 7;

[0040] It should be noted that the light shielding sleeve 22 can shield external light, and with the cooperation of the sealing plate 23, the centrifugal pump casing is always in a dark state when the centrifugal pump casing is subjected to pressure resistance testing, so that light will not be scattered when cracks occur in the centrifugal pump during the pressure resistance testing process, thereby ensuring that the light can change the color of the marking liquid at the cracked part of the centrifugal pump casing, thereby facilitating the identification and confirmation of bulges and cracks by personnel;

[0041] Reference Figure 3-Figure 5 , the sliding mechanism 3 is installed inside the lifting mechanism 2 and is used to slide along the outer surface of the centrifugal pump casing. The sliding mechanism 3 includes an electric slide rod 31, an electric slider 32, a liquid storage ring 33 and a liquid injection tube 34; the outer wall of the electric slide rod 31 is slidably connected to the inner wall of the electric slider 32, the electric slider 32 is fixedly connected to the outer ring bottom of the liquid storage ring 33, the top of the liquid storage ring 33 is fixedly connected to the bottom of the liquid injection tube 34, the electric slide rod 31 is installed on the top of the inner wall of the light-shielding sleeve 22, the initial position of the liquid storage ring 33 is in contact with the top of the mounting seat 7, the photoelectric switch 25 is electrically connected to the electric slide rod 31, and the photoelectric switch 25 is electrically connected to the electric slider 32;

[0042] It should be noted that the liquid ring 33 is filled with a light red marking liquid, which is mixed with silver halide. When the silver halide is irradiated by the fluorescent lamp 6, it is purple when it first comes into contact with the light of the fluorescent lamp 6, and gradually changes to black as the irradiation time increases, thereby being able to distinguish between bulges and cracks.

[0043] Reference Figure 6-Figure 7, pushing mechanism 4, the pushing mechanism 4 is installed on the sliding mechanism 3, the pushing mechanism 4 includes a fixed plate 41, a slide groove 42, a pushing spring 43 and a slide plate 44; the slide groove 42 is opened on the fixed plate 41 and passes through the fixed plate 41, one end of the pushing spring 43 is fixedly connected to the inner side wall of the slide groove 42, the inner side wall of the slide groove 42 is slidably connected to the outer side wall of the slide plate 44, the outer side wall of the slide plate 44 is fixedly connected to the end of the pushing spring 43 away from the slide groove 42, the end of the fixed plate 41 is fixedly connected to the inner ring of the liquid storage ring 33, and the fixed plate 41 is arranged in a ring array along the central axis of the liquid storage ring 33;

[0044] It should be noted that when the centrifugal pump housing is subjected to a compression test, the push spring 43 is in a compressed state, so that when a crack occurs, the marking mechanism 5 can be pushed into the crack location to mark the crack.

[0045] Reference Figure 6-Figure 9 , marking mechanism 5, the marking mechanism 5 is installed on the pushing mechanism 4, and is always in contact with the workbench 1 under the action of the pushing mechanism 4, and the marking mechanism 5 is used to mark the parts where the centrifugal pump is deformed and cracked, and the marking mechanism 5 includes a rolling sleeve 51, a marking turntable 52, a liquid guiding column 53 and a liquid guiding block 54; the adjacent side of the rolling sleeve 51 is fixedly connected to the plane part of the marking turntable 52, the liquid guiding column 53 is attracted and rotatably connected to the rolling sleeve 51, the liquid guiding column 53 is fixedly connected to the liquid guiding block 54, and the end of the rolling sleeve 51 is rotatably connected to the adjacent side of the slide 44, the liquid guiding block 54 passes through the side wall of the liquid storage ring 33 and extends to the interior of the liquid storage ring 33, and the liquid guiding block 54 is arranged in a ring array along the central axis of the liquid storage ring 33.

[0046] It should be noted that when the centrifugal pump housing is slightly bulged, the marking turntable 52 and the liquid guide block 54 can be fitted together. When the centrifugal pump housing is bulged due to pressure, the marking turntable 52 marks the bulge. When the housing is cracked, the rolling sleeve 51 marks the crack. The attraction portion of the liquid guide column 53 and the rolling sleeve 51 is a magnetic ring attraction, while the remaining portions are made of a material similar to the wick, which can conduct the marking liquid. The liquid guide block 54 is also made of a material similar to the wick, which can conduct the marking liquid, thereby ensuring that when there is a defect in the housing, the defective portion can be effectively marked.

[0047] It should also be noted that the marking mechanism 5 is provided with two rows, the upper and lower rows are equal in number, and are staggered, so as to be able to wrap all parts of the centrifugal pump casing.

[0048] In the present invention, when in use, the electric slide rod 31 and the electric slider 32 are first activated, so that the liquid injection tube 34 extends out of the top of the light shielding sleeve 22, pushing open the sealing plate 23, and then the main amount of marking liquid containing silver halide is added into the liquid storage ring 33 through the liquid injection tube 34. At this time, the liquid storage ring 33 is slid back to the bottom of the electric slide rod 31;

[0049] Then, the centrifugal pump housing is sleeved on the mounting seat 7. At this time, the electric screw 21 is started to make the light shielding cover 22 fit with the top of the workbench 1. During this process, the marking turntable 52 slides inward under the squeezing action of the centrifugal pump housing until it is about to fit with the liquid guide block 54. In the process of the light shielding cover 22 gradually fitting with the workbench 1, the marking turntable 52 will clean the outer surface of the centrifugal pump housing to prevent the housing from heating up under the action of pressure during the pressure test of the centrifugal pump housing. Due to the presence of dust, the heat cannot be dissipated, resulting in bulging and deformation, which affects the accuracy of the test.

[0050] Then the hydraulic press 24 can be started to perform a pressure test on the centrifugal pump housing;

[0051] When the centrifugal pump casing cracks under pressure, refer to Figure 8 (In the figure, a is the centrifugal pump housing; b is the crack location and the moving direction of the marking turntable 52), the light generated by the fluorescent lamp 6 will illuminate the photoelectric switch 25, so that the photoelectric switch 25 controls the electric slide bar 31 and the electric slider 32 to work and drive the liquid storage ring 33 to slide upward. When the marking turntable 52 moves to the crack location, the marking turntable 52 loses the squeezing effect of the centrifugal pump housing, so that the slide plate 44 slides toward the centrifugal pump housing under the action of the push spring 43, and then the marking turntable 52 enters the crack, so that the rolling sleeve 51 fits the edge of the crack and marks the edge of the crack. The marking liquid will be transferred to the rolling sleeve 51 through the liquid guide block 54 and the liquid guide column 53. The marked marking liquid will eventually turn black under the illumination of the fluorescent lamp 6 due to the silver halide it contains. Therefore, when the detection is completed, even if the crack is closed, the inspector can directly observe the location where the crack is generated, thereby improving the accuracy of the detection.

[0052] When the centrifugal pump casing bulges and deforms under pressure, refer to Figure 9(In the figure, c is the centrifugal pump housing with a bulge deformation; d is the moving direction of the marking turntable 52). When the test is completed and the light-shielding cover 22 is moved upward, when the marking turntable 52 moves to the initial deformation position of the bulge, the marking turntable 52 will contact the liquid guide block 54 under the action of the bulge, so that the liquid guide block 54 transfers the marking liquid to the outer surface of the marking turntable 52. At this time, as the light-shielding cover 22 moves upward, the marking turntable 52 will mark the position of the bulge, so that the inspection personnel can directly observe the bulge position, which improves the convenience of inspection, reduces the burden on personnel, and improves the accuracy of inspection.

[0053] When the centrifugal pump casing bulges and deforms under the action of pressure, and cracks appear at the bulge deformed part or other parts, the light generated by the fluorescent lamp 6 will shine on the photoelectric switch 25, so that the photoelectric switch 25 controls the electric slide bar 31 and the electric slider 32 to drive the liquid storage ring 33 to slide upward. When the marking turntable 52 moves to the cracked part, the marking turntable 52 loses the squeezing effect of the centrifugal pump casing, so that the slide plate 44 slides toward the centrifugal pump casing under the action of the push spring 43, and then the marking turntable 52 enters the crack, so that the rolling sleeve 51 fits with the edge of the crack, marking the edge of the crack. The marking liquid will be transferred to the rolling sleeve 51 through the liquid guide block 54 and the liquid guide column 53. The marked marking liquid will eventually turn black under the illumination of the fluorescent lamp 6 due to the silver halide contained therein. When the marking turntable 52 moves to the initial deformation position of the bulge, the marking turntable 52 will contact the liquid guide block 54 under the action of the bulge, so that the liquid guide block 54 transfers the marking liquid to the outer surface of the marking turntable 52. At this time, as the light-shielding sleeve 22 moves upward, the marking turntable 52 will mark the position of the bulge. If a crack occurs at the position of the bulge, the marking turntable 52 will mark the bulge part while the rolling sleeve 51 will mark the crack part.

[0054] After the inspection is completed, take out the centrifugal pump casing for observation.

[0055] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An intelligent detection device for centrifugal pump pressure resistance, comprising a workbench (1), characterized in that: A mounting seat (7) is fixedly connected to the middle position of the top of the workbench (1), and a fluorescent lamp (6) is installed at the middle position of the top of the mounting seat (7); Also includes: A lifting mechanism (2), the lifting mechanism (2) being installed on the top of the workbench (1) and used for performing a pressure test on the centrifugal pump housing and shielding an external light source during the test; A sliding mechanism (3), the sliding mechanism (3) being installed inside the lifting mechanism (2) and being used for sliding along the outer surface of the centrifugal pump casing; A pushing mechanism (4), wherein the pushing mechanism (4) is mounted on the sliding mechanism (3); a marking mechanism (5), the marking mechanism (5) being mounted on the pushing mechanism (4) and always in contact with the workbench (1) under the action of the pushing mechanism (4), and the marking mechanism (5) being used to mark portions of the centrifugal pump where deformation and cracks occur; The fluorescent lamp (6) is used to change the color of the marking liquid marked at the crack; The sliding mechanism (3) includes an electric slide rod (31), an electric slider (32), a liquid storage ring (33) and a liquid injection tube (34); the outer wall of the electric slide rod (31) is slidably connected to the inner wall of the electric slider (32), the electric slider (32) is fixedly connected to the outer bottom of the liquid storage ring (33), and the top of the liquid storage ring (33) is fixedly connected to the bottom of the liquid injection tube (34); The pushing mechanism (4) includes a fixed plate (41), a slide groove (42), a pushing spring (43) and a slide plate (44); the slide groove (42) is provided on the fixed plate (41) and passes through the fixed plate (41); one end of the pushing spring (43) is fixedly connected to the inner side wall of the slide groove (42); the inner side wall of the slide groove (42) is slidably connected to the outer side wall of the slide plate (44); the outer side wall of the slide plate (44) is fixedly connected to the end of the pushing spring (43) away from the slide groove (42); The end of the fixed plate (41) is fixedly connected to the inner ring of the liquid storage ring (33); The marking mechanism (5) comprises a rolling sleeve (51), a marking turntable (52), a liquid guiding column (53) and a liquid guiding block (54); the adjacent sides of the rolling sleeve (51) are fixedly connected to the plane portion of the marking turntable (52); the liquid guiding column (53) and the rolling sleeve (51) are attracted and rotationally connected; and the liquid guiding column (53) and the liquid guiding block (54) are fixedly connected; The end of the rolling sleeve (51) is rotatably connected to the adjacent side of the slide plate (44), and the liquid guide block (54) penetrates the side wall of the liquid storage ring (33) and extends to the interior of the liquid storage ring (33).

2. The intelligent detection device for centrifugal pump pressure resistance according to claim 1, characterized in that: The lifting mechanism (2) comprises an electric screw (21), a light shielding sleeve (22), a sealing plate (23), a hydraulic press (24) and a photoelectric switch (25); the outer wall of the electric screw (21) is connected to the light shielding sleeve (22) through a thread, the top of the light shielding sleeve (22) is in contact with the bottom of the sealing plate (23), and is connected to the sealing plate (23) through a torsion shaft, the hydraulic press (24) is installed in the middle of the light shielding sleeve (22), and the hydraulic part and the telescopic part are located inside the light shielding sleeve (22), and the photoelectric switch (25) is installed on the inner wall of the light shielding sleeve (22).

3. The intelligent detection device for centrifugal pump pressure resistance according to claim 2, characterized in that: The electric screw (21) is mounted on the top of the workbench (1), the bottom of the light-shielding sleeve (22) is in contact with the top of the workbench (1), and the bottom of the inner wall of the light-shielding sleeve (22) is in contact with the outer wall of the mounting seat (7).

4. The intelligent detection device for centrifugal pump pressure resistance according to claim 2, characterized in that: The electric slide rod (31) is mounted on the top of the inner wall of the light shielding sleeve (22), and the initial position of the liquid storage ring (33) is in contact with the top of the mounting seat (7).

5. The intelligent pressure resistance detection device for centrifugal pumps according to claim 1, characterized in that: The fixed plates (41) are arranged in a ring array along the central axis of the liquid storage ring (33).

6. The intelligent pressure resistance detection device for centrifugal pumps according to claim 1, characterized in that: The liquid guiding blocks (54) are arranged in a ring array along the central axis of the liquid storage ring (33).

7. The intelligent detection device for centrifugal pump pressure resistance according to claim 2, characterized in that: The photoelectric switch (25) is electrically connected to the electric slide bar (31), and the photoelectric switch (25) is electrically connected to the electric slide block (32).

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