A test method for simulating the wear of rubber by ore slurries
By simulating the abrasion of rubber by slurry, and adjusting factors such as slurry concentration, pH value, temperature and pressure, the problem of non-representative rubber abrasion test results in the existing technology is solved, and a more accurate assessment of rubber abrasion resistance is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-15
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, simple rubber wear detection methods cannot effectively simulate the impact of various factors on rubber wear in actual mining conditions, resulting in unrepresentative test results.
A test method for simulating the wear of rubber by slurry was designed. By adjusting factors such as the concentration, pH value, temperature and pressure of the slurry, and combining the power unit, reaction unit, regulation unit and control unit, the actual working conditions of the mine were simulated, and the wear condition of the rubber block was observed.
The experimental environment is closer to the actual working conditions in the mine, and the test results are more representative, enabling accurate assessment of the wear resistance of rubber in the mining environment.
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Figure CN115963029B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of rubber wear test methods, in particular to a test method for simulating the wear of rubber caused by ore pulp. BACKGROUND
[0002] Rubber refers to a high-elastic polymer material with reversible deformation, which is elastic at room temperature and can quickly and powerfully restore its deformation. Rubber products are widely used in various aspects of industry or life. Due to the high wear resistance, low density and low energy consumption of rubber materials, the application range is gradually expanding, but the wear and aging of rubber products during work directly affect the normal operation of equipment.
[0003] Rubber product wear is a common damage phenomenon, which is a micro-exfoliation phenomenon on the surface of rubber caused by friction. The performance of rubber products can be detected by the test method for wearing rubber. Some test methods for wearing rubber are disclosed in the prior art. The rubber products are placed in the test equipment for detection, and the performance of the rubber products can be judged.
[0004] The test methods for wearing rubber in the prior art usually use DIN abrasion and Akron abrasion test methods to detect rubber products, but these tests are only simple tests of the wear performance of rubber products. However, there are many factors affecting rubber wear in actual working conditions, especially for rubber used in mine actual working conditions. The working conditions of the mine are complex, for example, the concentration, PH value, temperature and pressure of the ore pulp are all factors affecting the detection of rubber wear. The detection results of the simple detection of the wear performance of the rubber products are often not representative. SUMMARY
[0005] The present application aims to provide a test method for simulating the wear of rubber caused by ore pulp, which can detect the influence of the concentration, PH value, temperature and internal pressure of the ore pulp on the wear condition of the rubber.
[0006] To achieve the above purpose, the present application proposes the following technical scheme: a test method for simulating the wear of rubber caused by ore pulp, which is carried out according to the following steps:
[0007] 1) Install the rubber block to be tested on the sample disc in the test equipment;
[0008] 2) Adjust the concentration, PH value, pressure and temperature of the ore pulp in the equipment in sequence;
[0009] 3) Start the test equipment to test;
[0010] 4) Observe the wear condition of the rubber block in the ore pulp with different concentration, PH value, pressure and temperature, and obtain the test results;
[0011] The device in step 1) comprises a main plate, a power part, a reaction part, an adjusting part and a control part; the power part is fixedly connected to the main plate; the reaction part is drivingly connected to the power part; the adjusting part is arranged outside the reaction part and is controllably connected to the control part;
[0012] The power part comprises a main motor; the main motor is fixedly connected to the main plate;
[0013] The face of the main plate on which the main motor is mounted is defined as an upper end face, and the end face is a horizontal plane;
[0014] The reaction part comprises a plurality of reaction kettles, and the reaction kettles are all fixedly connected to the lower end face of the main plate; different concentrations and PH values of ore pulp are loaded into the plurality of reaction kettles, and ball valve switches are arranged at the lower ends of the plurality of reaction kettles; a stirring shaft is rotatably connected to the inside of any reaction kettle in a vertical direction through a bearing, the stirring shaft extends upward into the inside of the main plate and is rotatably connected to the main plate through a bearing; any stirring shaft located in the inside of the main plate is drivingly connected to the output shaft of the main motor through a transmission member, and a rubber block is detachably connected to the lower end of the stirring shaft and located in the inside of the reaction kettle;
[0015] The adjusting part comprises a temperature control assembly and a pressure control assembly, and the temperature control assembly and the pressure control assembly are arranged outside the plurality of reaction kettles and used for adjusting the temperature and pressure in the plurality of reaction kettles;
[0016] The control part controls the rotating speed of the adjusting part and the output shaft of the main motor and detects the wear condition of the plurality of rubber blocks in different ore pulp environments.
[0017] Further, the adjusting part further comprises a lifting assembly, the lifting assembly comprises a hydraulic support column, a hydraulic oil pipe, a booster pump and a hydraulic oil tank; the upper end of the hydraulic support column is fixedly connected to the lower end face of the main plate, and the lower end of the hydraulic support column is fixedly connected with a base; the hydraulic oil tank is arranged outside the reaction kettle, the gas outlet of the booster pump is communicated with the hydraulic oil tank, and one end of the hydraulic oil pipe is communicated with the bottom end of the hydraulic oil tank and the other end is communicated with the bottom end of the hydraulic support column;
[0018] The reaction kettle comprises a kettle cover and a kettle body, and the kettle cover and the kettle body are detachably connected; any kettle cover is fixedly connected to the lower end face of the main plate, the stirring shaft is rotatably connected to the kettle cover through a sealing bearing, and the plurality of kettle bodies are all fixedly connected to the upper end face of the base;
[0019] When the plurality of kettle covers and kettle bodies are separated, the hydraulic support column drives the plurality of kettle covers to ascend or descend, and the reaction kettle is opened or closed.
[0020] Further, the upper end of any of the reaction kettles is provided with an air inlet, a pressure relief valve, a pressure gauge and an observation port; the pressure control assembly comprises an air pipe and a pressure regulating valve; one end of the air pipe is in communication with an external air source, the other end is provided with a plurality of branch pipes in communication, and the air pipe is provided with a pressure regulating valve; the plurality of branch pipes are fixedly and communicatively connected with the plurality of air inlets, and each of the branch pipes is provided with a switch valve.
[0021] Further, the temperature control assembly comprises a water pump, a water pipe and temperature measuring needles; the water pump is placed on the upper end surface of the base; one end of the water pipe is in communication with the water outlet of the water pump, and the other end is provided with a plurality of branch pipes in communication; the plurality of branch pipes of the water pipe are fixedly and communicatively connected with the bottoms of the plurality of reaction kettles, and each of the branch pipes is provided with a switch valve; each of the cooling boxes is provided with a drain pipe on the upper end; the number of the temperature measuring needles corresponds to the number of the plurality of reaction kettles; each of the temperature measuring needles is fixedly connected with the plurality of reaction kettles; the temperature measuring needles penetrate through the cooling boxes and are fixedly connected with the outer walls of the kettle bodies.
[0022] Further, the plurality of sample plates are fixedly connected to the lower end of the stirring shaft; the sample plates are provided with a plurality of clamping grooves, and the rubber blocks are detachably connected to the clamping grooves.
[0023] Further, the clamping grooves provided on at least one of the sample plates are arranged in a ring-shaped interval array on the disc surface, and the included angle formed by the two adjacent clamping grooves and the center of the sample plate is 90°; the clamping grooves provided on at least one of the sample plates are arranged in a ring-shaped interval array on the disc surface, and the included angles formed by the two adjacent clamping grooves and the center of the sample plate are different.
[0024] Further, the pressure regulating valve comprises a pressure regulating valve one and a pressure regulating valve two, and the pressure regulating valve one and the pressure regulating valve two are connected in series.
[0025] Further, a limiting rod is fixedly connected to the lower end surface of the main plate, a limiting block is fixedly connected to the outer surface of the hydraulic support column, and the limiting rod penetrates through the limiting block and is slidably connected with the limiting block.
[0026] Two positioning blocks are fixedly connected to the outer surface of the limiting rod, and the two positioning blocks are located on the upper and lower sides of the limiting block; the limiting rod, the positioning block and the limiting block are used to limit the distance of upward or downward movement of the hydraulic support column, the main plate and the plurality of kettle covers.
[0027] Further, the hydraulic oil pipe is arranged in the interior of the base.
[0028] Further, a sealing ring is arranged at the position where the lower end of the kettle cover contacts the kettle body.
[0029] Beneficial effects:
[0030] From the above technical solutions, the application provides a test method for simulating rubber wear in ore pulp. When the influence of pressure on the wear of rubber blocks in ore pulp needs to be detected, one of the reaction kettles is pressurized, and when the pressure adjustment in the reaction kettle is completed, the switch valve on the branch pipe connected with the reaction kettle is closed. Turn on the main motor switch. Under the same conditions, observe the wear condition of the rubber block before and after the pressure adjustment of the reaction kettle. When the influence of temperature on the wear of rubber blocks in ore pulp needs to be detected, the temperature of one of the reaction kettles is adjusted, and the power switch of the main motor is turned on. Under the same conditions, observe the wear condition of the rubber block before and after the temperature adjustment of the reaction kettle. When the influence of the concentration and PH value of the ore pulp on the experimental results needs to be detected, different concentrations and PH values of ore pulp are loaded into two reaction kettles, and other conditions in the two reaction kettles are controlled to be the same during the experiment. Then, the experiment is carried out and the wear condition of the rubber block in the ore pulp with different concentrations and PH values is observed.
[0031] The experimental method can detect the rubber used in the actual working condition of the mine, and can adjust the concentration, PH value, temperature and pressure of the ore pulp according to the actual working condition. The experimental environment is more suitable for the actual environment of the mine, and the detection result is more representative.
[0032] It should be understood that all combinations of the aforementioned concepts and additional concepts described in greater detail below can be seen as part of the subject matter of the present disclosure as long as such concepts are not mutually inconsistent.
[0033] The foregoing and other aspects, embodiments and features of the present teachings can be better understood from the following detailed description taken in conjunction with the accompanying drawings. Other aspects, embodiments and features of the present teachings will be apparent from the detailed description and the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0034] The drawings are not drawn to true scale. In the drawings, like reference numerals can be used to denote like parts throughout the various views. For the sake of clarity, not every component can be labeled in every drawing. There will now be described, by way of example only, embodiments of various aspects of the application with reference to the drawings in which:
[0035] Figure 1 is a structural schematic view of an embodiment of the application;
[0036] Figure 2 is a sectional view of a main board of an embodiment of the application;
[0037] Figure 3A structure schematic diagram of a rubber block of an embodiment of the present application;
[0038] Figure 4 A structure schematic diagram of a sample plate of an embodiment of the present application;
[0039] Figure 5 A structure schematic diagram of a sample plate of an embodiment of the present application; Figure 4 A sectional view of A-A in the structure schematic diagram of the sample plate of the embodiment of the present application;
[0040] Figure 6 A structure schematic diagram of another sample plate of an embodiment of the present application;
[0041] Figure 7 A structure schematic diagram of a sample plate pressing plate of an embodiment of the present application.
[0042] 1, main board; 2, main motor; 3, belt; 4, stirring shaft; 5, kettle cover; 6, sample plate; 61, clamping groove; 7, rubber block; 8, sample plate cover plate; 9, kettle body; 10, ball valve switch; 11, hydraulic support column; 12, hydraulic oil pipe; 13, booster pump; 14, hydraulic oil tank; 15, limiting block; 16, limiting rod; 17, positioning block; 18, water pump; 19, water pipe; 191, cooling box; 192, drain pipe; 20, temperature measuring needle; 21, pressure regulating valve one; 22, pressure regulating valve two; 23, air inlet; 24, pressure gauge; 25, pressure relief valve; 26, control cabinet; 27, control panel; 28, observation port. DETAILED DESCRIPTION
[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meanings understood by those of ordinary skill in the art to which the present application belongs.
[0044] The terms "first", "second", and similar terms used in the specification and claims of the present patent application do not denote any order, quantity, or importance, but are used to distinguish different components. Similarly, the singular forms "a", "an", and "the" do not denote a quantity limitation, but indicate the presence of at least one, unless the context clearly indicates otherwise. The terms "comprise", "comprising", and similar terms mean that the elements or objects preceding the word "comprise" or "comprising" encompass the features, integers, steps, operations, elements, and / or components listed after the word "comprise" or "comprising", and do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, which may change accordingly when the absolute positions of the described objects change.
[0045] Based on the existing simulation wear rubber test method, it is often only to detect the wear performance of rubber products, but in the actual working condition, the influencing factors of rubber wear are various, especially the rubber used in the actual working condition of the mine, only the detection of the wear of the rubber cannot meet the actual demand; The test method for simulating the wear of rubber in the mine pulp in the embodiment of the present application can adjust the concentration, PH value, temperature, pressure and other factors of the mine pulp according to the actual working condition, the experimental environment is more suitable for the environment of the actual working condition of the mine, and the detection result is more representative.
[0046] The test method for simulating the wear of rubber in the mine pulp disclosed in the present application will be further specifically introduced in combination with the embodiments shown in the drawings.
[0047] In combination with Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown, a test method for simulating the wear of rubber in the mine pulp is carried out according to the following steps.
[0048] 1) The rubber block 7 to be tested is installed on the test sample disc 6 in the test equipment;
[0049] 2) The concentration, PH value, pressure, and temperature of the mine pulp in the equipment are adjusted in sequence;
[0050] 3) Start the equipment for testing;
[0051] 4) Observe the wear condition of the rubber block 7 in the mine pulp with different concentrations, PH values, pressures, and temperatures, and obtain the experimental results;
[0052] The device in step 1) includes a main board 1, a power unit, a reaction unit, an adjustment unit, and a control unit; the power unit is fixedly connected to the main board 1; the reaction unit is driven and connected to the power unit; the adjustment unit is located outside the reaction unit and is controlled and connected to the control unit; for example... Figure 1 As shown, the control unit has a control cabinet 26, on which a control panel 27 is installed; the power unit includes a main motor 2; the main motor 2 is fixedly connected to the main board 1.
[0053] Define the surface on which the main motor 2 is mounted on the motherboard 1 as the upper surface, and this surface is horizontal; the reaction section includes several reaction vessels, all of which are fixedly connected to the lower surface of the motherboard 1; the several reaction vessels are filled with slurries of different concentrations and pH values, and each of the reaction vessels is equipped with a ball valve switch 10 at its lower end, through which the slurry inside the reaction vessels can be discharged; according to actual needs, such as Figure 1 As shown, there are two reactors. When it is necessary to detect the effect of slurry concentration and pH value on the experimental results, under the condition that other conditions are the same inside the two reactors, slurries of different concentrations and pH values are loaded into the two reactors respectively, and then the experiment is carried out and the experimental results are observed. A stirring shaft 4 is rotatably connected to the interior of either reactor through a bearing in the vertical direction. The stirring shaft 4 extends upward into the interior of the main board 1 and is rotatably connected to the main board 1 through a bearing.
[0054] Each stirring shaft 4 located inside the main board 1 is connected to the output shaft of the main motor 2 via a transmission component. The specific structure of the transmission component is as follows: Figure 2 As shown, specifically, a belt 3 is installed, a cavity is provided inside the main board 1, the stirring shaft 4 passes through the cavity, the belt 3 is located inside the cavity of the main board 1, and the output shaft of the main motor 2 is connected to any stirring shaft 4 via the belt 3; a rubber block 7 is detachably connected to the lower end of the stirring shaft 4 and located inside the reactor; specifically, a sample tray 6 is horizontally fixedly connected to the lower end of several stirring shafts 4; several slots 61 are provided on the sample tray 6, and the rubber block 7 is detachably connected to the slots 61; the connection method between the rubber block 7 and the slots 61 is as follows. Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the rubber block 7 is designed with a T-shaped structure. Each slot 61 has a groove at its upper end that matches the upper end of the rubber block 7. After inserting several rubber blocks 7 into the corresponding slots 61, the upper end of the rubber block 7 will be locked in the groove at the upper end of the slot 61, thus initially achieving the engagement between the rubber block 7 and the sample tray 6. Then, the sample tray cover plate 8 is fixedly connected to the upper surface of the sample tray 6 with bolts. The sample tray cover plate 8 can further fix the rubber block 7, preventing the rubber block 7 from falling out of the slots 61 of the sample tray 6 during the experiment, thus affecting the progress of the experiment.
[0055] At least one of the sample disc 6 is provided with a card slot 61 in the disc surface of the annular interval array distribution, and the included angle of adjacent two card slots 61 and the center of the sample disc 6 is 90°; at least one of the sample disc 6 is provided with a card slot 61 in the disc surface of the annular interval array distribution, and the included angle of adjacent two card slots 61 and the center of the sample disc 6 is different; the specific design of the angle of the card slot 61 is shown in Figure 4 and Figure 6 By setting different angles of the card slot 61, the wear of the rubber block 7 under different angles of the ore pulp can be tested.
[0056] The adjusting part includes a temperature control assembly and a pressure control assembly, both of which are arranged outside the plurality of reaction kettles for adjusting the temperature and pressure inside the plurality of reaction kettles.
[0057] The control part controls the adjusting part and the rotation speed of the output shaft of the main motor 2, and detects the wear condition of the plurality of rubber blocks 7 in different ore pulp environments.
[0058] As shown in Figure 1 and Figure 2 The adjusting part further includes a lifting assembly, which includes a hydraulic support column 11, a hydraulic oil pipe 12, a booster pump 13, and a hydraulic oil tank 14. The upper end of the hydraulic support column 11 is fixedly connected to the lower end surface of the main plate 1, and the lower end of the hydraulic support column 11 is fixedly connected to a base. The hydraulic oil tank 14 is arranged outside the reaction kettle, and the gas outlet of the booster pump 13 is communicated with the hydraulic oil tank 14. One end of the hydraulic oil pipe 12 is communicated with the bottom end of the hydraulic oil tank 14, and the other end is communicated with the bottom end of the hydraulic support column 11. The hydraulic oil pipe 12 is arranged inside the base. The lower end surface of the main plate 1 is fixedly connected to a limiting rod 16, and the outer surface of the hydraulic support column 11 is fixedly connected to a limiting block 15. The limiting rod 16 passes through the limiting block 15 and is slidingly connected with the limiting block 15. Two positioning blocks 17 are fixedly connected to the outer surface of the limiting rod 16 at intervals, and the two positioning blocks 17 are located on the upper and lower sides of the limiting block 15. The limiting rod 16, the positioning blocks 17, and the limiting block 15 are used to limit the distance that the hydraulic support column 11 drives the main plate 1 and the plurality of kettle covers 5 to move upward or downward.
[0059] The reactor includes a lid 5 and a body 9, which are detachably connected. A sealing ring is provided at the contact position between the lower end of the lid 5 and the body 9. Any lid 5 is fixedly connected to the lower end face of the main board 1, and the stirring shaft 4 is rotatably connected to the lid 5 through a sealed bearing. Several bodies 9 are fixedly connected to the upper end face of the base. When several lids 5 are separated from the bodies 9, the hydraulic support column 11 drives several lids 5 to rise or fall, opening or closing the reactor, thereby realizing the placement and removal of the rubber block 7. In the initial state, the lid 5 and the body 9 are in a snap-fit sealed state. When it is necessary to fill the reactor with slurry or other materials, the lid 5 is opened and closed. When installing or removing the rubber block 7, open the buckle and then turn on the power switch of the booster pump 13 to increase the pressure inside the hydraulic oil tank 14. Under pressure, the hydraulic oil inside the hydraulic oil tank 14 flows into the hydraulic support column 11 through the hydraulic oil pipe 12. The hydraulic support column 11 begins to extend upward, simultaneously driving the main board 1 and the two vessel covers 5 to move upward, separating the vessel covers 5 from the vessel body 9. When the hydraulic support column 11 rises to an appropriate distance, control the booster pump 13 to stop the hydraulic support column 11 from extending upward, and then you can load slurry into the reactor or install or remove the rubber block 7.
[0060] like Figure 1 As shown, each reactor is equipped with an air inlet 23, a pressure relief valve 25, a pressure gauge 24, and an observation port 28 at its upper end; the pressure control assembly includes a vent pipe 211 and a pressure regulating valve; one end of the vent pipe 211 is connected to an external air source, and the other end is connected to several branch pipes, and a pressure regulating valve is installed on the vent pipe 211; the pressure regulating valve includes a pressure regulating valve one 21 and a pressure regulating valve two 22, which are connected in series; several branch pipes are fixed and connected to several air inlets 23, and each branch pipe is equipped with a switch valve; when it is necessary to detect the pressure of the rubber block 7 in the slurry... When wear affects the reactor, pressurize one of the reactors. Specifically, open the switch valve on the branch pipe connected to the reactor, and then input gas into the vent pipe 211 through an external gas source. The design of two pressure regulating valves connected in series on the vent pipe 211 can improve the safety and stability of the gas supply process. Observe the pressure gauge on the reactor to understand the internal pressure of the reactor. After the internal pressure of the reactor is regulated, close the switch valve on the branch pipe connected to the reactor and turn on the main motor 2 switch. Under the same conditions, observe the wear condition of the rubber block 7 of the reactor before and after pressure regulation.
[0061] like Figure 1As shown, the temperature control assembly includes a water pump 18, a water pipe 19 and temperature measuring needles 20; the water pump 18 is placed on the upper end face of the base; one end of the water pipe 19 is communicated with the water outlet of the water pump 18, and the other end is communicated with a plurality of branch pipes, the plurality of branch pipes of the water pipe 19 are fixed and communicated with the bottoms of the plurality of reaction kettles one by one, and the branch pipes are all provided with on-off valves; the outer side of any kettle body 9 is provided with a cooling tank 191, and the upper end of any cooling tank 191 is provided with a drain pipe 192; the temperature measuring needles 20 correspond to the number of the plurality of reaction kettles, the plurality of temperature measuring needles 20 are fixedly connected with the plurality of reaction kettles one by one, and the temperature measuring needles 20 penetrate through the cooling tank 191 and are fixedly connected with the outer wall of the kettle body 9; when it is needed to detect the influence of temperature on the wear of the rubber block 7 in the ore pulp, the temperature of one of the reaction kettles is adjusted; the specific operation is to open the on-off valve on the branch pipe at the bottom of the reaction kettle, and then turn on the power switch of the water pump 18, the water pump 18 sucks water from outside and delivers the water into the water pipe 19, the water enters the branch pipe from the water pipe 19 under the action of pressure and then enters the cooling tank 191 outside the reaction kettle; the water gradually rises in the cooling tank 191 and finally flows out from the drain pipe 192 at the upper end of the cooling tank 191; when the water flows in the cooling tank 191, the heat in the reaction kettle is taken away, and the temperature in the reaction kettle is understood through the degree shown by the temperature measuring needle 20 at the bottom of the reaction kettle; after the temperatures of the two reaction kettles are adjusted, the power switch of the main motor 2 is turned on, and under the condition that other conditions are the same, the wear condition of the rubber block 7 before and after the temperature adjustment of the reaction kettle is observed.
[0062] The test method for simulating the wear of rubber by ore pulp disclosed by the embodiments of the present application can control the concentration, PH value, temperature, pressure, rotating speed and installation angle of the rubber block of the ore pulp according to actual working conditions, and can complete the wear resistance evaluation of the rubber block in the actual working conditions of the mine in the laboratory, and has strong practicability.
[0063] Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application. Those skilled in the art without departing from the spirit and scope of the present application can make various modifications and decorations. Therefore, the protection scope of the present application is defined by the claims.
Claims
1. A test method for simulating the abrasion of rubber by mineral slurry, characterized in that, Follow these steps; 1) Install the rubber block (7) to be tested on the sample tray (6) inside the test equipment; 2) Adjust the concentration, pH value, pressure, and temperature of the slurry in the equipment in sequence; 3) Start the experimental equipment and conduct the test; 4) Observe the wear condition of the rubber block (7) inside the slurry with different concentrations, pH values, pressures and temperatures, and obtain the experimental results; The device in step 1) includes a main board (1), a power unit, a reaction unit, an adjustment unit, and a control unit; the power unit is fixedly connected to the main board (1); the reaction unit is drivenly connected to the power unit; the adjustment unit is located outside the reaction unit and is controlled by the control unit. The power unit includes a main motor (2); the main motor (2) is fixedly connected to the main board (1); The surface on which the main motor (2) is mounted on the motherboard (1) is defined as the upper surface, and this surface is a horizontal surface; The reaction section includes several reaction vessels, each fixedly connected to the lower end face of the main board (1); the reaction vessels are filled with mineral slurries of different concentrations and pH values, and each reaction vessel is equipped with a ball valve switch (10) at its lower end; a stirring shaft (4) is rotatably connected to the interior of any reaction vessel via a bearing, the stirring shaft (4) extends upward into the interior of the main board (1) and is rotatably connected to the main board (1) via a bearing; any stirring shaft (4) located inside the main board (1) is connected to the output shaft of the main motor (2) via a transmission component, and the rubber block (7) is detachably connected to the lower end of the stirring shaft (4) and located inside the reaction vessel; The regulating unit includes a temperature control component and a pressure control component, both of which are disposed on the outside of the plurality of reaction vessels and are used to regulate the temperature and pressure inside the plurality of reaction vessels. The control unit controls the rotational speed of the adjustment unit and the output shaft of the main motor (2), and detects the wear condition of several rubber blocks (7) under different slurry environments; Several sample trays (6) are horizontally fixedly connected to the lower end of the stirring shaft (4); several slots (61) are provided on the sample trays (6), and the rubber block (7) is detachably connected to the slots (61). At least one of the slots (61) provided on the sample tray (6) is arranged in a ring-shaped interval array on its tray surface, and the angle formed by two adjacent slots (61) and the center of the sample tray (6) is 90°; at least one of the slots (61) provided on the sample tray (6) is arranged in a ring-shaped interval array on its tray surface, and the angle formed by two adjacent slots (61) and the center of the sample tray (6) is different for each of them.
2. The test method for simulating slurry abrasion of rubber according to claim 1, characterized in that, The adjustment unit also includes a lifting assembly, which includes a hydraulic support column (11), a hydraulic oil pipe (12), a booster pump (13), and a hydraulic oil tank (14). The upper end of the hydraulic support column (11) is fixedly connected to the lower end face of the main board (1), and the lower end of the hydraulic support column (11) is fixedly connected to a base. The hydraulic oil tank (14) is located outside the reactor, and the air outlet of the booster pump (13) is connected to the hydraulic oil tank (14). One end of the hydraulic oil pipe (12) is connected to the bottom end of the hydraulic oil tank (14), and the other end is connected to the bottom end of the hydraulic support column (11). The reactor includes a lid (5) and a body (9), which are detachably connected; any one of the lids (5) is fixedly connected to the lower end face of the main board (1), and the stirring shaft (4) is rotatably connected to the lid (5) through a sealed bearing; several bodies (9) are fixedly connected to the upper end face of the base. When several of the vessel covers (5) are separated from the vessel body (9), the hydraulic support column (11) drives several of the vessel covers (5) to rise or fall, and the reactor opens or closes.
3. The test method for simulating slurry abrasion of rubber according to claim 1, characterized in that, Each of the aforementioned reactors is provided with an air inlet (23), a pressure relief valve (25), a pressure gauge (24), and an observation port (28) at its upper end; the pressure control assembly includes a vent pipe (211) and a pressure regulating valve; one end of the vent pipe (211) is connected to an external air source, and the other end is connected to several branch pipes, and a pressure regulating valve is provided on the vent pipe (211); the several branch pipes are fixed and connected to several of the aforementioned air inlets (23), and each of the several branch pipes is provided with a switch valve.
4. The test method for simulating the abrasion of rubber by slurry according to claim 2, characterized in that, The temperature control assembly includes a water pump (18), a water pipe (19), and a temperature measuring needle (20); the water pump (18) is placed on the upper surface of the base; one end of the water pipe (19) is connected to the outlet of the water pump (18), and the other end is connected to a number of branch pipes. The branch pipes of the water pipe (19) are fixed and connected to the bottom of the reactors, and each branch pipe is equipped with a switch valve; a cooling box (191) is provided on the outside of any reactor body (9), and a drain pipe (192) is provided on the upper end of any cooling box (191); the number of temperature measuring needles (20) corresponds to the number of reactors, and the number of temperature measuring needles (20) is fixedly connected to the reactors. The temperature measuring needle (20) passes through the cooling box (191) and is fixedly connected to the outer wall of the reactor body (9).
5. The test method for simulating slurry abrasion of rubber according to claim 3, characterized in that, The pressure regulating valve includes a pressure regulating valve one (21) and a pressure regulating valve two (22), which are connected in series.
6. The test method for simulating slurry abrasion of rubber according to claim 2, characterized in that, The lower end face of the main board (1) is fixedly connected to a limiting rod (16), and the outer surface of the hydraulic support column (11) is fixedly connected to a limiting block (15). The limiting rod (16) passes through the limiting block (15) and is slidably connected to the limiting block (15). The outer surface of the limiting rod (16) is fixedly connected with two positioning blocks (17) at intervals. The two positioning blocks (17) are located on the upper and lower sides of the limiting block (15). The limiting rod (16), positioning blocks (17) and limiting blocks (15) are used to limit the distance that the hydraulic support column (11) drives the main board (1) and several of the kettle lids (5) to move up or down.
7. The test method for simulating slurry abrasion of rubber according to claim 2, characterized in that, The hydraulic oil pipe (12) is located inside the base.
8. The test method for simulating slurry abrasion of rubber according to claim 2, characterized in that, A sealing ring is provided at the contact position between the lower end of the lid (5) and the body (9).
Citation Information
Patent Citations
Rubber abrasion test equipment
CN109060572A