A drainage pump life test bench

Abstract

This utility model provides a drainage pump life test bench, comprising: a support frame with bolted wheels around its bottom perimeter; a pipeline box around the top perimeter of the support frame; a control cabinet on one side of the support frame; a water tank at the bottom center; and test cabinets welded to the front and rear sides of the pipeline box; test pipeline modules arranged at equal intervals on one side of the test cabinet. The outlet of the drainage pump under test is connected to the return pipe in the test pipeline module, and the power supply interface of the drainage pump under test is connected to an AC power socket. The test bench is powered on, and the water tank is filled with test liquid through the water inlet. The copper ball valve is opened, the switch on the power socket is turned on, and the control cabinet is activated to start the test. The drainage pump under test starts for seconds and stops for seconds, repeating this cycle for 1000 hours of continuous load start-stop operation. During startup, the liquid level sensor detects whether the liquid level in the pipeline is too low or not detected, verifying the long-term operational reliability of the designed drainage pump.

Description

Technical Field

[0001] This utility model relates to the field of testing, and in particular to the field of drainage pump life testing technology, specifically a drainage pump life test bench. Background Technology

[0002] Durability testing is required for the drain pumps in front-loading washing machines, top-loading washing machines, and dryers. This testing examines the fatigue and wear resistance of the bearings, seals, motors, impellers, and other components in the drain pump under 1000 hours of continuous load. It assesses whether performance has degraded and to what extent, providing a basis for estimating product lifespan. During continuous testing, potential problems can be identified and eliminated in advance (such as leaks caused by seal failure or shutdowns caused by bearing seizure), avoiding product quality issues caused by sudden malfunctions in actual use. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a drainage pump life test bench to solve the difficulties of the prior art.

[0004] To achieve the above and other related objectives, this utility model provides a drainage pump life test bench, comprising:

[0005] Support frame 1, wherein the bottom perimeter of the support frame 1 is provided with casters 11 by bolts;

[0006] Pipe box 2, the pipe box 2 is arranged around the top of the support frame 1, and the pipe box 2 is a hollow cavity 21 formed by the four side walls;

[0007] Control cabinet 3, which is placed on one side of the support frame 1;

[0008] Water tank 4, the water tank 4 is placed in the center of the bottom, the water tank 4 has a water inlet on one side of the top, and the water tank (4) has a drain pipe on one side of the bottom;

[0009] Inspection cabinet 5, there are 4 inspection cabinets 5, which are arranged in 2 rows and are welded to be installed at intervals on the front and back sides of the pipeline box 2;

[0010] The detection pipeline module 6 is arranged at equal intervals on one side in the detection cabinet 5. There are ten sets of detection pipeline modules 6 arranged at intervals inside the detection cabinet 5. The other side of the detection pipeline module 6 is connected to the water tank 4.

[0011] According to the preferred embodiment, heightening columns 22 are provided around the bottom of the pipe box 2 and between it and the support frame 1.

[0012] According to the preferred embodiment, the detection pipeline module 6 includes:

[0013] The heightening waterproof board 61 is placed on the bottom of the testing cabinet 5 on the side away from the water tank 4;

[0014] A water pumping pipe 63 is located on one side directly above the heightening waterproof plate 61, and the other side of the water pumping pipe 63 passes through the front and rear sides of the water tank 4. A copper ball valve 64 is sleeved on the outer side of the water pumping pipe 63 near the heightening waterproof plate 61.

[0015] The return water pipe 65 is L-shaped. The bottom of the return water pipe 65 is arranged side by side with the pumping pipe 63 on one side. The top of the return water pipe 65 is fitted with a tee fitting 66 through a threaded connection. The top of the tee fitting 66 is covered with a liquid level sensor 67 through a threaded connection. A tee return water pipe 68 is threadedly fastened to one side of the tee fitting 66. The bottom of the tee return water pipe 68 is inserted through the center of the top of the water tank 4.

[0016] According to the preferred embodiment, the heightening waterproof plate 61 is in the shape of an inverted U, and a water leakage hole 62 is provided at the center of the top of the heightening waterproof plate 61.

[0017] According to the preferred embodiment, an AC power socket 7 is installed on the side wall of the pipeline box 2 directly above the side of the pumping pipe 63 and the return pipe 65 of each group of detection pipeline modules 6, which is close to the side of the heightening waterproof plate 61.

[0018] According to the preferred embodiment, the AC power socket 7 is connected to the control cabinet 3 via a power supply line on the side near the water tank 4.

[0019] This utility model employs a support frame, a pipe box, a control cabinet, a water tank, a testing cabinet, and a testing pipe module. The outlet of the drainage pump under test is connected to the return pipe in the testing pipe module. The power supply interface of the drainage pump under test is connected to an AC power socket. The control cabinet starts the test bench and supplies power. The water tank is filled with test liquid through the water inlet. The copper ball valve is opened, and the switch on the power socket is turned on. The control cabinet starts the test. The drainage pump under test starts for seconds and stops for seconds, repeating this cycle for 1000 hours under continuous load. During startup, the liquid level sensor detects whether the liquid level in the pipeline is too low or not detected, verifying the long-term operational reliability of the designed drainage pump. By disassembling and testing damaged and intact drainage pumps, the service life and performance degradation are predicted, potential defects are identified, and optimization and improvement can be carried out.

[0020] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0021] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0022] Figure 2 The diagram shown is a structural schematic of the internal structure of the testing cabinet in this utility model.

[0023] Figure 3 The diagram shown is an enlarged three-dimensional structural diagram of the water pumping pipe and the water return pipe in this utility model.

[0024] Label Explanation

[0025] 1. Support frame; 11. Casters;

[0026] 2. Piping box; 21. Cavity; 22. Elevation column;

[0027] 3. Control cabinet;

[0028] 4. Water tank;

[0029] 5. Testing cabinet;

[0030] 6. Pipeline detection module; 61. Heightening waterproof membrane; 62. Leakage hole; 63. Pumping pipe; 64. Copper ball valve; 65. Return water pipe; 66. T-fitting; 67. Liquid level sensor; 68. T-fitting return water pipe;

[0031] 7. AC power socket; Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0034] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0035] This utility model proposes a drainage pump life test bench for use in testing processes. This utility model does not limit the specifications of the drainage pump life to be tested, but the structure of the support frame 1, pipe box 2, control cabinet 3, water tank 4, test cabinet 5 and test pipe module 6 is particularly suitable for drainage pump life testing.

[0036] In general, the drainage pump life test bench proposed in this utility model mainly includes: a support frame 1, a pipeline box 2, a control cabinet 3, a water tank 4, a test cabinet 5, and a test pipeline module 6. (See also...) Figure 1 It shows the arrangement of the support frame 1, pipe box 2, control cabinet 3, water tank 4, detection cabinet 5 and detection pipe module 6.

[0037] The drainage pump life test bench proposed in this utility model is used by sequentially installing the drainage pump under test on the test pipeline module 6, connecting the inlet of the drainage pump under test to the pumping pipe 63 in the test pipeline module 6, connecting the outlet of the drainage pump under test to the return pipe 65 in the test pipeline module 6, and connecting the power supply interface of the drainage pump under test to the AC power socket 7. The control cabinet 3 starts the test bench and fills the water tank 4 with test liquid through the water inlet. The copper ball valve 64 is opened, the switch on the AC power socket 7 is turned on, and the control cabinet 3 starts the test. The drainage pump under test starts for 10 seconds and stops for 10 seconds, repeating this cycle for 1000 hours of continuous load start-stop. During startup, the liquid level sensor 67 detects whether the liquid level in the pipeline is too low or not detected, verifying the long-term operational reliability of the designed drainage pump. After disassembly and testing, the service life and performance degradation of damaged and intact drainage pumps are predicted, potential defects are identified, and optimization and improvement can be carried out.

[0038] The support frame 1 is bolted around its bottom and is equipped with casters 11, so the test equipment can be moved without the need for a forklift. Pipe boxes 2 are installed around the top of the support frame 1. Pipe boxes 2 are hollow cavities 21 formed by the four side walls. Elevating columns 22 are installed between the bottom of pipe boxes 2 and the support frame 1 to reduce the capacity of water tank 4 and reduce the water consumption during testing. Water tank 4 is placed in the center of the bottom and has a water inlet on one side of the top of water tank 4. There are 4 test cabinets 5, which are arranged in 2 rows and welded to the front and back sides of pipe boxes 2.

[0039] The aforementioned testing pipeline modules 6 are arranged at equal intervals on one side in the testing cabinet 5. Ten sets of testing pipeline modules 6 are arranged at intervals within the testing cabinet 5. The other side of the testing pipeline modules 6 is connected to the water tank 4. Each testing pipeline module 6 includes: a heightening waterproof plate 61, a suction pipe 63, a copper ball valve 64, a return pipe 65, and a liquid level sensor 67. The heightening waterproof plate 61 is placed at the bottom of the testing cabinet 5, away from the water tank 4. The heightening waterproof plate 61 is inverted U-shape, with drainage holes 62 spaced apart at the top center. When testing a drainage pump, it is placed on the heightening waterproof plate 61. If any drainage pump under test leaks, the heightening waterproof plate 61 prevents the pump from being submerged in water during periodic observations, thus avoiding affecting the testing results. During periodic inspections, if a leaking pump is found, the technician will close the corresponding copper ball valve 64 and turn off the AC power socket 7. The pumping pipe 63 is located directly above the raised waterproof plate 61 on one side, and the other side of the pumping pipe 63 passes through the front and rear sides of the water tank 4. A copper ball valve 64 is fitted on the outer side of the pumping pipe 63 near the raised waterproof plate 61. The return pipe 65 is L-shaped, with its bottom side-by-side on one side of the pumping pipe 63. A tee fitting 66 is threaded onto the top of the return pipe 65, and a liquid level sensor 67 is threaded onto the top of the tee fitting 66. A tee return pipe 68 is threaded onto one side of the tee fitting 66, and the bottom of the tee return pipe 68 passes through the center of the top of the water tank 4. It should also be noted that an AC power socket 7 is installed on the side wall of the pipe box 2 directly above the pumping pipe 63 and the return pipe 65 near the raised waterproof plate 61 in each group of detection pipe modules 6. The AC power socket 7 is connected to the control cabinet 3 via a power supply line on the side of the water tank 4.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A drainage pump life test bench, characterized in that, include: A support frame (1) is provided with casters (11) at the bottom of the support frame (1) by bolts; Pipe box (2), the pipe box (2) is set around the top of the support frame (1), the pipe box (2) is a hollow cavity (21) formed by the four side walls; Control cabinet (3), said control cabinet (3) is placed on one side of the support frame (1); Water tank (4), the water tank (4) is placed in the center of the bottom, the water tank (4) has a water inlet on one side of the top and a drain pipe on one side of the bottom; Inspection cabinet (5), there are 4 inspection cabinets (5), the 4 inspection cabinets (5) are arranged in 2 rows and are welded to be installed at intervals on the front and back sides of the pipeline box (2); The detection pipeline module (6) is arranged at equal intervals on one side in the detection cabinet (5). The detection pipeline module (6) is arranged in ten groups at intervals in the detection cabinet (5). The other side of the detection pipeline module (6) is connected to the water tank (4).

2. The drainage pump life test bench according to claim 1, characterized in that, The bottom of the pipe box (2) is provided with heightening columns (22) between the support frame (1) and the four sides.

3. The drainage pump life test bench according to claim 2, characterized in that, The detection pipeline module (6) includes: A heightening waterproof board (61) is placed on the bottom of the testing cabinet (5) away from the water tank (4); A water pump (63) is located on one side directly above the heightening waterproof plate (61), and the other side of the water pump (63) passes through the front and rear sides of the water tank (4). A copper ball valve (64) is sleeved on the outer side of the water pump (63) near the heightening waterproof plate (61). The return water pipe (65) is L-shaped. The bottom of the return water pipe (65) is arranged side by side on one side of the pumping pipe (63). The top of the return water pipe (65) is fitted with a three-way fitting (66) through a threaded fit. The top of the three-way fitting (66) is covered with a liquid level sensor (67) through a threaded fit. A three-way return water pipe (68) is threadedly fastened on one side of the three-way fitting (66). The bottom of the three-way return water pipe (68) is inserted through the center of the top of the water tank (4).

4. The drainage pump life test bench according to claim 3, characterized in that, The heightening waterproof board (61) is in the shape of an inverted U, and a water leakage hole (62) is provided at the center of the top of the heightening waterproof board (61).

5. The drainage pump life test bench according to claim 4, characterized in that, An AC power socket (7) is installed on the side wall of the pipeline box (2) directly above the side of the riser waterproof plate (61) of each of the detection pipeline modules (6). The pumping pipe (63) and the return pipe (65) are connected to the side wall of the pipeline box (2).

6. The drainage pump life test bench according to claim 5, characterized in that, The AC power socket (7) is connected to the control cabinet (3) via a power supply line on the side near the water tank (4).

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