Detection device for methylene blue test of machine-made sand

Abstract

The utility model discloses a detection device for machine-made sand methylene blue test, which comprises a test bed, the top surface of the test bed is provided with a container positioning groove, a filter paper groove and a waste liquid groove, the container positioning groove is used for positioning a sample container, the filter paper groove is used for positioning a filter paper sheet, the bottom surface of the filter paper groove is provided with a downward concave hole groove, and the waste liquid groove is provided with a liquid outlet. A filter material funnel is detachably arranged at the position of the waste liquid tank, a first lifting mechanism is arranged at the top of the test bed and connected with a stirrer, a stirring head of the stirrer is located above the container positioning tank, a lifting translation module is arranged at the top of the test bed and connected with a mounting part, and the mounting part is connected with the lifting translation module. The mounting part is connected with a micro-injector and a lifting mechanism II, a needle tube piece is arranged at the bottom end of the micro-injector, and the lifting mechanism II is connected with a piston piece of the micro-injector; the device has the advantages of simplicity in operation, reliable result and convenience in cleaning.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete testing, and specifically relates to a detection device for a methylene blue test of machine-made sand. Background Art

[0002] The purpose of the methylene blue test is to determine whether there are expansive clay minerals in fine aggregate, fine powder, and mineral powder, and to determine the overall index of their content. The principle of the test is to continuously add methylene blue solution to the suspension made by mixing aggregate and water. After adding a certain amount of methylene blue solution, stir the solution for several minutes to allow the methylene blue to be adsorbed by the powder in the fine aggregate. Use a glass rod to dip a small amount of the suspension and drop it on the filter paper to observe whether there is a light blue halo radiated by free methylene blue, so as to judge the adsorption of the dye solution by the aggregate. Through the halo test, the end point of adding methylene blue dye is determined until the dye stops adsorbing on the surface. When free methylene blue appears (with a light blue halo width of about 1 mm as the standard), the methylene blue value MBV is calculated, and the calculation result is expressed as the number of grams of methylene blue absorbed per 1000g of sample.

[0003] The problem with the prior art is that during the experiment, a glass rod needs to be used to dip the sample methylene blue solution and drop it onto filter paper to observe the color halo. Since the amount of solution dipped during the manual operation cannot be guaranteed, the reliability of the test results is affected, and it is easy to drip on the operation site, affecting the cleanliness. A variety of instruments need to be used during the process, the stirring time is long, and manual operation is inconvenient. It is inconvenient to clean up the solution at the end of the test. Summary of the invention

[0004] The utility model aims to solve the problems existing in the prior art and provide a detection device for machine-made sand methylene blue test, which has the advantages of simple operation, reliable results and convenient cleaning.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a detection device for machine-made sand methylene blue test, comprising a test bench, the top surface of the test bench is provided with a container positioning groove, a filter paper groove and a waste liquid groove, the container positioning groove is used to position the sample container, the filter paper groove is used to position the filter paper, the bottom surface of the filter paper groove is provided with a lower concave hole groove, and a filter funnel is detachably provided at the waste liquid groove, a lifting mechanism 1 is provided on the top of the test bench, the lifting mechanism 1 is connected to a stirrer, and the stirring head of the stirrer is located above the container positioning groove, a lifting and translation module is provided on the top of the test bench, the lifting and translation module is connected to a mounting part, the mounting part is connected to a micro-injection syringe and a lifting mechanism 2, the bottom end of the micro-injection syringe is provided with a needle tube part, and the lifting mechanism 2 is connected to the piston part of the micro-injection syringe.

[0006] In the above scheme, the test bench is used to position the various components on the top, the container positioning groove is used to engage with the bottom surface of the sample container for positioning, and the filter paper groove is used to position the filter paper, which is convenient for cooperation with the agitator and the micro-injector. During the experiment, the concave hole groove is used to prevent the solution residue on the filter paper from being dripped by the micro-injector and affecting the subsequent filter paper. A detachable filter funnel is set at the waste liquid tank to separate and collect the waste liquid and machine-made sand after the test, which is convenient for subsequent discharge and treatment; the lifting mechanism is used to drive the agitator to rise and fall, which is convenient for the installation and removal of the sample container. An opening is opened on the top of the sample container, and the stirring head can be used to stir the machine-made sand and the methylene blue solution in the sample container. The lifting and translation module is used to realize the horizontal linear movement and lifting movement of the micro-injection syringe and the mounting part. The lifting mechanism 2 on the mounting part is used to control the movement of the piston part to perform micro-absorption and discharge of the sample. When working, the lifting and translation module is actuated, horizontally moved and descended, and the needle tube part of the micro-injection syringe is inserted into the sample in the sample container. The lifting mechanism 2 drives the piston part to rise and absorb the sample. The lifting and translation module performs the rising, horizontal movement and descending actions in sequence to move the needle tube part to the top of the filter paper. The lifting mechanism 2 drives the piston part to descend and discharge the sample, thereby realizing quantitative and micro-sampling from the sample container and moving the sample to the filter paper for discharge, which is convenient for observing the color halo.

[0007] Furthermore, a protruding groove is provided on the side of the positioning sample container, and the protruding groove is used to cooperate with the needle tube.

[0008] The protruding groove body is provided to facilitate sampling of needle tubes, and does not affect the stirring of the sample by the rotation of the stirring head, thereby avoiding interference between the micro-injection syringe and the stirrer, and ensuring uniformity during solution sampling.

[0009] Furthermore, a water supply assembly is provided at the waste liquid tank, and a drainage pipe is connected to the lower recessed hole tank and the waste liquid tank.

[0010] A water supply assembly is arranged at the waste liquid tank to facilitate the cleaning of the sample container, and the lower recessed hole tank, the waste liquid tank and the drain pipe are connected to facilitate the centralized discharge of the waste liquid.

[0011] Furthermore, a magnetic ring 1 is provided on the outer ring of the bottom surface of the filter paper slot, and a magnetic ring 2 for fixing the filter paper is detachably provided on the top surface of the magnetic ring 1.

[0012] By arranging a magnetic ring member 1 at the filter paper groove to adsorb a magnetic ring member 2, it is convenient to position the outer ring of the filter paper and avoid the filter paper from shifting.

[0013] Furthermore, the lifting mechanism includes a guide rod, a top plate is provided on the top of the guide rod, a motor is provided on the top plate, the motor is connected to a screw rod, a connecting plate is slidably provided on the guide rod, the connecting plate is connected to the agitator, and the screw rod is screwed to the connecting plate.

[0014] A connecting plate 1 is slidably connected through a guide rod 1, and the agitator is driven to move up and down through the connecting plate 1. A motor 1 is fixed to the top plate on the guide rod 1. A screw rod 1 is rotatably arranged between the top plate and the test bench. The screw rod 1 is driven to rotate through the motor 1, thereby driving the connecting plate 1 and the agitator to move up and down.

[0015] Furthermore, the lifting and translation module includes a horizontal track, a slider is arranged on the horizontal track, the slider is connected to the lifting module, a screw rod 2 is rotatably arranged on the horizontal track, the screw rod 2 is connected to a motor 2, and the slider is screwed to the screw rod 2.

[0016] A second motor and a second screw rod are arranged on the horizontal track, and the second motor drives the second screw rod to rotate, thereby driving the slider and the lifting module to move horizontally.

[0017] Furthermore, the lifting module includes a mold base 1, the mold base 1 is slidably connected to a mold base 2, a motor 3 is arranged on the mold base 1, the motor 3 is connected to a gear, and a rack for meshing with the gear is arranged on the mold base 2.

[0018] A slide rail and a slide groove structure are arranged between the mold base 1 and the mold base 2 for sliding connection. The motor 3 drives the gear to rotate and then drives the rack and the mold base 2 to move up and down.

[0019] Furthermore, the lifting mechanism 2 includes a guide rod 2, a piston connecting plate is slidably provided on the guide rod 2, the piston connecting plate is connected to the piston member, an end plate is provided at the end of the guide rod 2, a screw rod 3 is rotatably provided between the end plate and the mounting part, and the screw rod 3 is connected to a motor 4.

[0020] The end plates at the two ends of the guide rod are rotatably connected to the mounting portion through the screw rod three, which is driven to rotate by the motor four, thereby driving the piston connecting plate and the piston member to rise and fall, thereby realizing the suction and discharge actions of the test.

[0021] Furthermore, the test bench is provided with two water tanks, the two water tanks are respectively connected to water pumps, the two water pumps are connected to Y-shaped water pipes, and the outlet ends of the Y-shaped water pipes correspond to the positions of the sample containers.

[0022] The two water tanks are used to contain water and methylene blue solution, and corresponding volumes of water and methylene blue solution are delivered to the sample container through a water pump and a Y-type water pipe.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1. By integrating the lifting mechanism 1, lifting and translation module, lifting mechanism 2, stirrer and micro-injector on the test bench, the sample in the sample container can be quantitatively transferred to the filter paper. After the test is completed, the waste liquid can be directly separated and discharged through the filtrate funnel in the waste liquid tank. The operation is simple and the cleaning is convenient;

[0025] 2. The lifting mechanism 2 is combined with a micro-syringe to replace the traditional manual dip stick sampling, ensuring the structural consistency and reliability of each test, reducing the uncertainty of the manual process, and avoiding leakage of the test solution, which affects the on-site cleaning;

[0026] 3. By setting a protruding groove on the side of the test liquid container, the interference between the needle tube and the stirring head is avoided, so that the micro-injector can also stir the test liquid during sampling to ensure the uniformity of the sampled test liquid;

[0027] 4. By setting the first and second magnetic rings, the positioning of the filter paper is ensured to avoid displacement and sliding of the filter paper, which will affect the observation of the test results, making the operation convenient and the results reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The structure of the detection device for the methylene blue test of machine-made sand in Example 1 of the utility model is shown in FIG. Figure 1 ;

[0029] Figure 2 The structure of the detection device for the methylene blue test of machine-made sand in Example 1 of the utility model is shown in FIG. Figure 2 ;

[0030] Figure 3 This is a schematic diagram of the structure of the filter paper tank in Example 1 of the present utility model;

[0031] In the figure: 1. test bench; 2. container positioning slot; 3. filter paper slot; 4. waste liquid slot; 5. sample container; 6. filter paper; 7. concave hole slot; 8. filter funnel; 9. guide rod 1; 10. top plate; 11. motor 1; 12. screw rod 1; 13. connecting plate 1; 14. stirrer; 15. stirring head; 16. motor 2; 17. horizontal track; 18. slider; 19. screw rod 2; 20. mold base 1; 21. mold base 2 ; 22. Motor three; 23. Rack; 24. Guide rod two; 25. Piston connecting plate; 26. Motor four; 27. Mounting part; 28. End plate; 29. ​​Screw rod three; 30. Needle tube; 31. Piston; 32. Cylinder; 33. Protruding groove; 34. Water supply assembly; 35. Drain pipe; 36. Magnetic ring one; 37. Magnetic ring two; 38. Water tank; 39. Water pump; 40. Y-type water pipe; 41. Outlet section. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative labor are within the scope of protection of the utility model. In the description of the utility model, it should be noted that the terms front, back, left, right, etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the utility model product is usually placed when used. They are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] Example 1

[0034] like Figure 1-3 As shown, a detection device for machine-made sand methylene blue test comprises a test bench 1, the top surface of the test bench 1 is provided with a container positioning groove 2, a filter paper groove 3 and a waste liquid groove 4, the container positioning groove 2 is used to position a sample container 5, the filter paper groove 3 is used to position a filter paper sheet 6, the bottom surface of the filter paper groove 3 is provided with a lower concave hole groove 7, and a filter funnel 8 is detachably provided at the waste liquid groove 4, a lifting mechanism 1 is provided on the top of the test bench 1, the lifting mechanism 1 is connected to a stirrer 14, and a stirring head 15 of the stirrer 14 is located above the container positioning groove 2, a lifting and translation module is provided on the top of the test bench 1, the lifting and translation module is connected to a mounting portion 27, the mounting portion 27 is connected to a micro-injection syringe and a lifting mechanism 2, a needle tube component 30 is provided at the bottom end of the micro-injection syringe, and the lifting mechanism 2 is connected to a piston component 31 of the micro-injection syringe.

[0035] In the above scheme, the test bench 1 is used to position the components on the top, the container positioning groove 2 is used to engage with the bottom surface of the sample container 5 for positioning, the filter paper groove 3 is used to position the filter paper sheet 6, and is convenient for cooperating with the agitator 14 and the micro-injector. During the experiment, the solution dripped on the filter paper sheet 6 by the micro-injector is discharged from the concave hole groove 7 on the bottom surface of the filter paper groove 3 through the filter paper, and a detachable filter funnel 8 is set at the waste liquid groove 4 to separate and collect the waste liquid and machine-made sand after the test, which is convenient for subsequent discharge and treatment; the lifting mechanism 1 is used to drive the agitator 14 to rise and fall, which is convenient for the installation and removal of the sample container 5. The top of the sample container 5 is provided with an opening, and the machine-made sand and the methylene blue solution in the sample container 5 can be separated by the stirring head 15. Stirring, the lifting and translational module is used to realize the horizontal linear movement and lifting and lowering movement of the micro-injection syringe and the mounting part 27. The lifting mechanism 2 on the mounting part 27 is used to control the movement of the piston member 31 to perform micro-absorption and discharge of the sample. When working, the lifting and translational module is actuated, horizontally moved and descended, and the needle tube member 30 of the micro-injection syringe is inserted into the sample in the sample container 5. The lifting mechanism 2 drives the piston member 31 to rise and absorb the sample. The lifting and translational module performs the rising, horizontal movement and descending actions in sequence, and moves the needle tube member 30 to the top of the filter paper 6. The lifting mechanism 2 drives the piston member 31 to descend and discharge the sample, thereby realizing quantitative and trace sampling from the sample container 5 and moving the sample to the filter paper 6 for discharge, which is convenient for observing the color halo.

[0036] The micro-injector comprises a barrel 32, and the needle tube 30 can be connected to the barrel 32 by a thread, which is convenient for cleaning and maintenance of the needle tube 30. A controller is provided on the test bench 1, and the controller is electrically connected to the lifting mechanism 1, the lifting mechanism 2, and the lifting and translation module for programming control.

[0037] Furthermore, a protruding groove 33 is provided on the side of the positioning sample container 5 , and the protruding groove 33 is used to cooperate with the needle tube 30 .

[0038] The protruding groove 33 is provided to facilitate sampling by the needle tube 30 , and does not affect the stirring head 15 to rotate and stir the sample, thereby avoiding interference between the micro-injector and the stirrer 14 and ensuring uniformity of solution sampling.

[0039] The sample container 5 comprises a circular main body inner cavity and a rectangular inner cavity formed by a protruding groove body 33 .

[0040] Furthermore, a water supply assembly 34 is provided at the waste liquid tank 4 , and a drainage pipe 35 is connected to the lower recessed hole tank 7 and the waste liquid tank 4 .

[0041] A water supply assembly 34 is provided at the waste liquid tank 4 to facilitate cleaning of the sample container 5 , and the lower recessed hole tank 7 , the waste liquid tank 4 and the drain pipe 35 are connected to facilitate centralized discharge of waste liquid.

[0042] The water supply component 34 includes a water pipe and a faucet.

[0043] Furthermore, a magnetic ring 36 is disposed on the outer ring of the bottom surface of the filter paper slot 3 , and a magnetic ring 37 37 for fixing the filter paper sheet 6 is detachably disposed on the top surface of the magnetic ring 36 .

[0044] By arranging a magnetic ring 1 36 at the filter paper groove 3 to adsorb the magnetic ring 2 37 , it is convenient to position the outer ring of the filter paper 6 to avoid the filter paper from shifting.

[0045] The filter paper slot 3 and the filter paper piece 6 are both circular.

[0046] Furthermore, the lifting mechanism includes a guide rod 9, a top plate 10 is provided on the top of the guide rod 9, a motor 11 is provided on the top plate 10, the motor 11 is connected to a screw rod 12, a connecting plate 13 is slidably provided on the guide rod 9, the connecting plate 13 is connected to the agitator 14, and the screw rod 12 is screwed to the connecting plate 13.

[0047] The connecting plate 13 is slidably connected through the guide rod 9, and the agitator 14 is driven to move up and down through the connecting plate 13. The top plate 10 on the guide rod 9 fixes the motor 11. A screw rod 12 is rotatably arranged between the top plate 10 and the test bench 1. The screw rod 12 is driven to rotate by the motor 11, thereby driving the connecting plate 13 and the agitator 14 to move up and down.

[0048] A bearing seat can be provided on the top of the test bench 1 and the top plate 10 to connect the screw rod 12.

[0049] Furthermore, the lifting and translation module includes a horizontal track 17, on which a slider 18 is provided, the slider 18 is connected to the lifting module, a screw rod 19 is rotatably provided on the horizontal track 17, the screw rod 19 is connected to a motor 16, and the slider 18 is screwed to the screw rod 19.

[0050] A second motor 16 and a second screw rod 19 are arranged on the horizontal track 17. The second motor 16 drives the second screw rod 19 to rotate, thereby driving the slider 18 and the lifting module to move horizontally.

[0051] The direction of the horizontal track 17 is parallel to the connecting direction of the filter paper slot 3 and the sample container 5 slot.

[0052] Furthermore, the lifting module includes a mold base 20, the mold base 20 is slidably connected to a mold base 21, a motor 3 22 is provided on the mold base 20, the motor 3 22 is connected to a gear, and the mold base 21 is provided with a rack 23 for meshing with the gear.

[0053] A slide rail and slide groove structure is provided between the mold base 1 20 and the mold base 2 21 for sliding connection, and the motor 3 22 drives the gear to rotate and then drives the rack 23 and the mold base 2 21 to move up and down.

[0054] Furthermore, the lifting mechanism 2 includes a guide rod 24, on which a piston connecting plate 25 is slidably provided, and the piston connecting plate 25 is connected to the piston member 31. An end plate 28 is provided at the end of the guide rod 24, and a screw rod 3 29 is rotatably provided between the end plate 28 and the mounting portion 27, and the screw rod 3 29 is connected to a motor 4 26.

[0055] The end plate 28 at the end of the guide rod 24 is rotatably connected to the mounting portion 27, and the screw rod 3 29 is driven to rotate by the motor 4 26, thereby driving the piston connecting plate 25 and the piston member 31 to rise and fall, thereby realizing the suction and discharge action of the test.

[0056] The end plate 28 can be fixed on the mold base 21 to ensure structural stability.

[0057] Furthermore, two water tanks 38 are provided on the test bench, and the two water tanks 38 are respectively connected to water pumps 39, and the two water pumps 39 are connected to Y-shaped water pipes 40, and the outlet ends of the Y-shaped water pipes 40 correspond to the positions of the sample containers.

[0058] The two water tanks 38 are used to contain water and methylene blue solution, and the corresponding volumes of water and methylene blue solution are delivered to the sample container through the water pump 39 and the Y-shaped water pipe 40.

[0059] The outlet section 41 of the Y-shaped water pipe 40 is fixed to the side of the main body of the agitator.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection device for the machine-made sand methylene blue test, characterized in that: The invention comprises a test bench, wherein the top surface of the test bench is provided with a container positioning groove, a filter paper groove and a waste liquid groove, wherein the container positioning groove is used to position the sample container, the filter paper groove is used to position the filter paper sheet, the bottom surface of the filter paper groove is provided with a lower concave hole groove, and a filter funnel is detachably provided at the waste liquid groove, a lifting mechanism 1 is provided on the top of the test bench, the lifting mechanism 1 is connected with a stirrer, and the stirring head of the stirrer is located above the container positioning groove, a lifting and translation module is provided on the top of the test bench, the lifting and translation module is connected with a mounting part, the mounting part is connected with a micro-syringe and a lifting mechanism 2, a needle tube part is provided at the bottom end of the micro-syringe, and the lifting mechanism 2 is connected with the piston part of the micro-syringe.

2. The detection device for the machine-made sand methylene blue test according to claim 1, characterized in that: A protruding groove body is arranged on the side of the positioning sample container, and the protruding groove body is used to cooperate with the needle tube part.

3. The detection device for the machine-made sand methylene blue test according to claim 1, characterized in that: The waste liquid tank is provided with a water supply component, and the lower concave hole tank and the waste liquid tank are connected with a drainage pipe.

4. The detection device for the machine-made sand methylene blue test according to claim 1, characterized in that: The outer ring of the bottom surface of the filter paper slot is provided with a magnetic ring component 1, and the top surface of the magnetic ring component 1 is detachably provided with a magnetic ring component 2 for fixing the filter paper.

5. The detection device for the machine-made sand methylene blue test according to claim 1, characterized in that: The lifting mechanism 1 includes a guide rod 1, a top plate is arranged on the top of the guide rod 1, a motor 1 is arranged on the top plate, the motor 1 is connected to a screw rod 1, a connecting plate 1 is slidably arranged on the guide rod 1, the connecting plate 1 is connected to the agitator, and the screw rod 1 is screwed to the connecting plate 1.

6. The detection device for the machine-made sand methylene blue test according to claim 1, characterized in that: The lifting and translation module comprises a horizontal track, a slider is arranged on the horizontal track, the slider is connected to the lifting module, a second screw rod is rotatably arranged on the horizontal track, the second screw rod is connected to a second motor, and the slider is screwed to the second screw rod.

7. The detection device for the machine-made sand methylene blue test according to claim 6, characterized in that: The lifting module comprises a mold base 1, the mold base 1 is slidably connected to a mold base 2, a motor 3 is arranged on the mold base 1, the motor 3 is connected to a gear, and a rack for meshing with the gear is arranged on the mold base 2.

8. The detection device for the machine-made sand methylene blue test according to claim 6, characterized in that: The lifting mechanism 2 includes a guide rod 2, a piston connecting plate is slidably arranged on the guide rod 2, the piston connecting plate is connected to the piston member, an end plate is arranged at the end of the guide rod 2, a screw rod 3 is rotatably arranged between the end plate and the mounting part, and the screw rod 3 is connected to a motor 4.

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