A device and method for fully automatically measuring dust surface adhesion

Abstract

The present invention discloses a device and method for fully automatically measuring the surface adhesion of dust, the device comprises: a breaking unit, a gear unit, a crank mechanism, a base, a disc unit, and a sleeve unit; the breaking unit and the gear unit are fixed on the base; the breaking unit is arranged near the left side of the gear unit, and a crank mechanism is arranged above the gear unit; one side of the crank mechanism is fixed on the base, and the other side is fixed on the gear unit; the disc unit is arranged on the gear unit; the sleeve unit is fixed above the crank mechanism; the method comprises: performing a breaking operation by combining a low-speed motor with an elastic rope, and performing automatic sleeve assembly and automatic feeding operations by using a gear unit and a crank mechanism. The present invention can accurately capture the change of stress at the moment of dust peeling, avoid the experimental error caused by manual assembly, greatly improve the accuracy and repeatability, and the measurement process consumes less materials and can be recycled and reused.

Description

Technical Field

[0001] The present invention relates to the technical field of dust detection equipment, and in particular to a device and method for fully automatically determining the surface adhesion of dust. Background Art

[0002] The adhesion of dust has attracted much attention in many fields. For example, in actual engineering, the adhesion of dust will affect the design of the inclination angle of the dust-containing gas transmission pipeline and the difficulty of cleaning the filter dust collector. In the filter dust collector, the filter material will be difficult to clean due to the excessive adhesion of the dust surface, which will cause the dust cake to agglomerate and clog. Different dusts show different adhesion under different environmental conditions (such as temperature, humidity, gas composition, etc.), which will cause the dust filter element to be insufficiently peeled off during the spray cleaning, reducing the cleaning effect.

[0003] The current national standard measurement method for dust surface adhesion is the vertical break method in GB / T 16913-2008. This method uses a viscosity balance, places the dust sample on the left arm hook of the viscosity balance, and places a water cylinder on the right arm hanging plate. Water is injected into the cylinder through a water injector. When the water is injected, observe the balance pointer. When the pointer points to the middle position, stop injecting water. At this time, the dust sample has been vertically broken. The upper sleeve with half of the dust sample is removed, and the tube and dust are all placed in the weighing cup. After weighing, record and substitute the formula into the calculation to obtain the dust adhesion. However, this method requires manual operation, low degree of automation, and high technical operation. There are large errors in actual operation, and the measurement is expensive, the measurement time is long, and the measurement success rate is not high. National Patent No. 201821591815.1 discloses a device for measuring the surface adhesion of dust, which is an improvement on the national standard. However, the device has a low degree of automation during measurement, and manual operations such as adding dust can easily cause human errors in the experiment, and the experiment lacks repeatability. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a device and method for fully automatically measuring the surface adhesion of dust, so as to more scientifically solve the problem that the measurement success rate of the existing device for measuring the surface adhesion of dust is low.

[0005] The present invention provides a device for fully automatically determining the surface adhesion of dust, comprising: a breaking unit, a gear unit, a crank mechanism, a base, a disc unit, and a sleeve unit; the breaking unit comprises: a first bracket, a control and display, a low-speed motor, an elastic rope, a pulley, and a mechanical claw; the gear unit comprises: a first gear, a second bracket, a second gear, and a third bracket; the crank mechanism comprises: a slide bar, a slide plate, a slide groove, a bump, and a fourth bracket; the disc unit comprises: an upper disc, a lower disc, a stepping motor, a weighing sensor, and a vibration motor; the sleeve unit comprises: a sleeve group, a sleeve tube, and a feeding funnel; the breaking unit and the gear unit are fixed on the base; the breaking unit is arranged near the left side of the gear unit, and a crank mechanism is arranged above the gear unit; one side of the crank mechanism is fixed on the base, and the other side is fixed on the gear unit; the disc unit is arranged on the gear unit; the sleeve unit is fixed above the crank mechanism, and the sleeve and feeding actions are performed successively with the action of the crank mechanism.

[0006] Specifically, a first bracket is fixed in the vertical direction on one side of the base, and a control and display are fixed on the upper part of the first bracket; a low-speed motor is fixed on the first bracket above the control and display; the output end of the low-speed motor is connected to an elastic rope, and the elastic rope passes through a pulley fixed on the back of the control and display; a mechanical claw is fixed to the end of the elastic rope; a second bracket is fixed on the side of the base close to the first bracket; a first gear is arranged on the top of the second bracket; a third bracket is fixed on the side of the base away from the first bracket; a second gear is arranged on the top of the third bracket; the gear teeth of the first gear are arranged at the edge of the upper disc; The axis of the upper disk is connected to the output end of the stepper motor. Driven by the stepper motor, the upper disk rotates around its own axis, driving the first gear to rotate synchronously; the upper disk is symmetrically provided with a first sleeve hole and a second sleeve hole; the gear teeth of the second gear and the first gear are meshed with each other and are installed on the same horizontal plane; the second gear rotates around the center of the third bracket driven by the first gear; a lower disk is adjacent to the lower bottom surface of the upper disk; the axial through hole on the lower disk is fixed on the second bracket; a vibration circular hole, a recovery circular hole and a weighing circular hole are provided at the edge of the lower disk; the crank structure is arranged above the first gear and the second gear.

[0007] Specifically, the crank mechanism is connected to the cylindrical protrusion on the upper surface of the second gear through a sliding rod on one side close to the second gear, and is fixed to the base on the other side through a fourth bracket; the protrusion is fixed to the outer ring on the upper surface of the second gear; the sliding rod is provided with a ball bearing embedded in the protrusion on the side close to the second gear, and rotates with the second gear; the other end of the sliding rod is connected to the sliding plate through a hinge; the sliding plate moves in the sliding groove of the crank mechanism, and a sleeve tube and a feeding funnel are provided on the upper part of the sliding groove; a second through hole and a third through hole are opened on the sliding plate; the aperture diameter of the second through hole is the same as that of the third through hole; a first through hole is provided on the side of the sliding rod away from the second gear; an opening is provided below the feeding funnel, and the size of the opening is consistent with the aperture diameter of the third through hole.

[0008] Specifically, a vibration platform is provided in the vibration circular hole of the lower disc, the upper surface of the vibration platform and the upper surface of the lower disc are located on the same horizontal plane, the vibration platform is close to the lower disc but not in contact, and support legs are provided below the vibration platform to connect the base; a vibration motor is fixedly installed on the bottom surface of the vibration platform; a weighing sensor is placed in the weighing circular hole of the lower disc; the upper surface of the weighing sensor and the lower surface of the upper disc are arranged on the same horizontal plane; the centers of the vibration circular hole, the weighing circular hole and the recovery circular hole on the lower disc are all located with the center of the lower disc as the center. On the same circle; the line connecting the center of the vibrating circular hole and the center of the lower disc is perpendicular to the line connecting the center of the weighing circular hole and the center of the lower disc, with the line connecting the center of the vibrating circular hole and the center of the axial through hole as the 0° starting line, counterclockwise, the angle formed by the line connecting the center of the recycling circular hole and the center of the weighing circular hole is between 0° and 90°, the angle formed by the line connecting the center of the recycling circular hole and the center of the vibrating circular hole is between 90° and 180°, and the vibrating circular hole, the weighing circular hole and the recycling circular hole do not contact each other; the center of the weighing circular hole and the grasping center of the mechanical claw are located on the same vertical line;

[0009] Specifically, the control and display respectively control the stepper motor, the low-speed motor, the weighing sensor and the vibration motor through the circuit;

[0010] Specifically, 3 to 6 sleeve groups are stored in the sleeve tube, the sleeve tube is cylindrical and hollow inside, and has holes at the upper and lower ends; the outer diameter of the sleeve group is the same as the opening diameters of the second through hole and the third through hole on the slide; the sleeve group comprises an upper sleeve and a lower adhesive attachment; the upper sleeve is a hollow cylinder, and is open from the upper bottom surface to the lower bottom surface; the lower adhesive attachment is a hollow cylinder, and the upper bottom surface is open and the lower bottom surface is closed; the inner diameter of the upper sleeve is the same as the inner diameter of the lower adhesive attachment; the outer diameter of the upper sleeve is the same as the outer diameter of the lower adhesive attachment; the upper sleeve of the sleeve group is placed above the lower adhesive attachment; the top horizontal plane of the lower adhesive attachment is lower than the horizontal plane where the top of the upper disc is located after the sleeve group enters the second through hole; the highest horizontal plane of the sleeve group after entering the second through hole is higher than the horizontal plane where the top of the upper disc is located and lower than the horizontal plane where the bottom of the slide rod is located;

[0011] The present invention provides a method for fully automatically measuring the surface adhesion of dust, comprising the following steps:

[0012] S1: Preparation of the fully automatic device for measuring dust surface adhesion before conducting the dust surface adhesion test: Control the stepper motor through the control and display to set the through hole at the lower end of the sleeve tube and the second through hole in the middle of the slide to be on the same vertical line. At this time, the sleeve group falls from the sleeve tube into the first sleeve hole of the upper disc, and the upper sleeve and the lower adhesive attachment overlap;

[0013] S2: Before the start of the dust surface adhesion test, dust is loaded into the feeding funnel of the fully automatic dust surface adhesion test device: the upper disc rotates 90° counterclockwise under the drive of the stepper motor, driving the sleeve group to rotate to the bottom of the feeding funnel, and at the same time, the first gear at the edge of the upper disc drives the second gear to rotate 180° clockwise, and the protrusion rotates with the second gear, driving the slide bar to move closer to the feeding funnel, so that the lower end opening of the feeding funnel, the third through hole on the slide and the sleeve group under the slide are on the same vertical line, and the lower end opening of the feeding funnel is no longer blocked by the slide, and the dust falls into the sleeve group under the action of gravity and fills the upper surface of the upper sleeve;

[0014] S3: After the dust surface adhesion test begins, the fully automatic dust surface adhesion test device starts working: the upper disc rotates 90° counterclockwise driven by the stepper motor, and the sleeve filled with dust rotates to the vibration platform along with the upper disc. The vibration motor under the vibration platform is started through the control and display, and the dust in the sleeve is evenly compacted by controlling the vibration time, ensuring that the adhesion surface contact degree of each layer of dust in the sleeve is consistent;

[0015] S4: The key operation of the fully automatic device for measuring the surface adhesion of dust after the experiment begins: After the vibration operation is completed, the sleeve continues to rotate 90° counterclockwise with the upper disc to the weighing sensor, and the low-speed motor is controlled by the control and display to rotate at a low speed, driving the elastic rope to retract the mechanical claw, and the mechanical claw drives the upper sleeve on the weighing sensor to slowly rise and break; the control and display record the data of the weighing sensor; as the low-speed motor runs, the dust between the upper sleeve and the lower adhesive attachment breaks, and then the upper sleeve is lifted by the elastic rope, and the minimum value before the break is recorded as G1, unit: mg, and the stable value after the dust sample breaks is G2, unit: mg, and the measurement is completed; calculate the adhesion P of the dust, unit: g / cm2:

[0016] S5: After the dust surface adhesion test is completed, the fully automatic dust surface adhesion test device is restored and reset: the low-speed motor is controlled by the control and display to drive the mechanical claw to put the upper sleeve back on the lower adhesive attachment through the elastic rope. The sleeve rotates counterclockwise with the upper disc and falls into the dust collector at the bottom of the lower disc at the recovery hole; the stepper motor is turned on by the control and display, and the upper disc continues to rotate counterclockwise driven by the stepper motor. When the through hole at the lower end of the sleeve tube and the second through hole in the middle of the slide are on the same vertical line, the next round of experimental cycle begins.

[0017] Specifically, during the experimental process of step S1 to step S6, two sets of sleeves are simultaneously located in the sleeve holes of the upper disk, and the current set of sleeves is located in step S1. i During the step, the sleeve is located in the first sleeve hole or the second sleeve hole, and the latter set of sleeves is in S i-1 Step, the sleeve is located in the second sleeve hole or the first sleeve hole; when Si is S1 of the first cycle of operation, S i-1 is 0; when S i For non-first week of work, S i-1 is the last step of the previous cycle; i represents the number of steps in a method for fully automatic determination of dust surface adhesion.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention uses a low-speed motor in combination with an elastic rope to perform the breaking operation, thus avoiding the error caused by the evaporation of water and the instability of human operation in the vertical breaking method. At the same time, the elastic rope has a smaller change in the pulling force on the object than the non-elastic rope, making the breaking process slower, leaving enough time for accurately capturing the stress changes at the moment of dust peeling.

[0020] 2. The present invention uses a crank mechanism to control automatic sleeve assembly and automatic feeding, avoiding experimental errors caused by manual assembly, greatly improving accuracy and repeatability; at the same time, making the feeding process more convenient and faster, with a higher degree of automation. The design of the crank slide structure allows the upper disc to rotate 180° to achieve one-time sleeve assembly and feeding, and rotate 360° to achieve vibration and breaking. The new sleeve assembly and feeding are carried out simultaneously, and multiple processes are synchronized and seamlessly connected, saving operation time.

[0021] 3. The present invention has a wide measuring range and high precision. The data changes of the dust breaking process can be displayed and recorded through the control and display. The obtained data is convenient and reliable. The calculation method adopted is scientific and simple. The measurement process has few consumables and can be recycled and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an elevation view of the device for fully automatically measuring the surface adhesion of dust according to the present invention;

[0023] Figure 2 It is a left view of the device for fully automatically measuring the surface adhesion of dust according to the present invention;

[0024] Figure 3 It is a front view of the device for fully automatically measuring the surface adhesion of dust according to the present invention;

[0025] Figure 4 This is the structural view of the upper disk;

[0026] Figure 5 This is the structural view of the lower disk;

[0027] Figure 6 It is the overall device structure diagram of the crank mechanism;

[0028] Figure 7 It is the structural diagram of the slide bar in the crank structure;

[0029] Figure 8 It is the structural diagram of the sliding plate in the crank structure;

[0030] Fig. 9 It is a method for fully automatic determination of dust surface adhesion;

[0031] In the figure: 1, base, 2, breaking unit, 201, first bracket, 202, control and display, 203, low speed motor, 204, elastic rope, 205, pulley, 206 mechanical claw, 3, gear unit, 301, first gear, 302, second bracket, 303, second gear, 304, third bracket, 4, crank mechanism, 401, slide bar, 402, slide plate, 403, slide groove, 404, bump, 405, fourth bracket, 406, ball bearing, 407, first through hole, 408, second through hole, 409, The third through hole, 5, disc unit, 501, upper disc, 502, first sleeve hole, 503, second sleeve hole, 504, stepping motor, 505, lower disc, 506, vibration circular hole, 507, vibration platform, 508, vibration motor, 509, vibration platform support leg, 510, recovery circular hole, 511, weighing circular hole, 512, weighing sensor, 513, axial through hole, 6, sleeve unit, 601, sleeve tube, 602, feeding funnel, 603, sleeve group, 6031, upper sleeve, 6032, lower adhesive accessory. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] See also Figure 1 , a device for fully automatically measuring the surface adhesion of dust, comprising: a base 1, a breaking unit 2, a gear unit 3, a crank mechanism 4, a disc unit 5, and a sleeve unit 6;

[0034] The breaking unit 2 includes: a first bracket 201, a control and display 202, a low-speed motor 203, an elastic rope 204, a pulley 205, and a mechanical claw 206;

[0035] The gear unit 3 includes: a first gear 301, a second bracket 302, a second gear 303, and a third bracket 304; the crank mechanism 4 includes: a slide bar 401, a slide plate 402, a slide groove 403, a bump 404, and a fourth bracket 405; the disc unit 5 includes: an upper disc 501, a lower disc 505, a stepping motor 504, a weighing sensor 512, and a vibration motor 508; the sleeve unit 6 includes: a sleeve group 603, a sleeve tube 601, and a feeding funnel 602;

[0036] The breaking unit 2 and the gear unit 3 are fixed on the base 1; the breaking unit 2 is arranged near the left side of the gear unit 3, and a crank mechanism 4 is arranged above the gear unit 3; one side of the crank mechanism 4 is fixed on the base 1, and the other side is fixed on the gear unit 3, and the gear unit 3 drives the crank mechanism 4 to move; the disc unit 5 is arranged on the gear unit 3 and rotates with the gear unit 3; the sleeve unit 6 is fixed above the crank mechanism 4, and performs sleeve and material adding actions as the crank mechanism 4 moves.

[0037] See also Figure 2 , 3 4. Specifically, a first bracket 201 is fixed in the vertical direction on one side of the base 1, and a control and display 202 is fixed on the upper part of the first bracket 201; a low-speed motor 203 is fixed on the first bracket 201 above the control and display 202; the output end of the low-speed motor 203 is connected to an elastic rope 204, and the elastic rope 204 passes through a pulley 205 fixed on the back of the control and display 202; a mechanical claw 206 is fixed to the end of the elastic rope 204; a second bracket 302 is fixed on the side of the base 1 close to the first bracket 201; a first gear 301 is provided on the top of the second bracket 302; a third bracket 304 is fixed on the side of the base 1 away from the first bracket 201; a second gear 303 is provided on the top of the third bracket 304; the gear teeth of the first gear 301 are arranged at the edge of the upper disk 501 ; The axis of the upper disk 501 is connected to the output end of the stepper motor 504. Driven by the stepper motor 504, the upper disk 501 rotates around its own axis, driving the first gear 301 to rotate synchronously; the upper disk 501 is symmetrically provided with a first sleeve hole 502 and a second sleeve hole 503; the gear teeth of the second gear 303 and the first gear 301 are meshed with each other and installed on the same horizontal plane; the second gear 303 rotates around the center of the third bracket 304 driven by the first gear 301; a lower disk 505 is provided adjacent to the lower bottom surface of the upper disk 501; the axial through hole 513 on the lower disk 505 is fixed on the second bracket 302; a vibration circular hole 506, a recovery circular hole 510, and a weighing circular hole 511 are provided at the edge of the lower disk 505; the crank structure is arranged above the first gear 301 and the second gear 303.

[0038] See also Figure 6 , 78. Specifically, the crank mechanism 4 comprises: a slide bar 401, a slide plate 402, a slide groove 403, a protrusion 404, and a fourth bracket 405; the crank mechanism 4 is connected to the cylindrical protrusion 404 on the upper surface of the second gear 303 through the slide bar 401 on one side close to the second gear 303, and the other side is fixed to the base 1 through the fourth bracket 405; the protrusion 404 is fixed to the outer ring on the upper surface of the second gear 303; the slide bar 401 is provided with a ball bearing 406 embedded in the protrusion 404 on the side close to the second gear 303, and follows the second gear 303 Rotation; the other end of the slide rod 401 is connected to the slide plate 402 through a hinge; the slide plate 402 moves in the slide groove 403 of the crank mechanism 4; the slide plate 402 is provided with a second through hole 408 and a third through hole 409; the second through hole 408 has the same aperture as the third through hole 409; the slide rod 401 is provided with a first through hole 407 on the side away from the second gear 303; the upper part of the slide groove 403 is provided with a sleeve tube 601 and a feeding funnel 602; the feeding funnel 602 is provided with an opening at the bottom, and the size of the opening is consistent with the aperture of the third through hole 409.

[0039] See also Figure 5 Specifically, a vibration platform 507 is provided in the vibration circular hole 506 of the lower disc 505, and the upper surface of the vibration platform 507 is located on the same horizontal plane as the upper surface of the lower disc 505, and the vibration platform 507 is close to the lower disc 505 but does not touch it. A vibration platform support leg 509 is provided below the vibration platform 507 to connect to the base 1; a vibration motor 508 is fixedly installed on the bottom surface of the vibration platform 507; a weighing sensor 512 is placed in the weighing circular hole 511 of the lower disc 505; the upper surface of the weighing sensor 512 is arranged on the same horizontal plane as the lower surface of the upper disc 501; the centers of the vibration circular hole 506, the weighing circular hole 511 and the recovery circular hole 510 on the lower disc 505 are all located below The center of the disk 505 is on the same circle with the center of the circle as the center; the line connecting the center of the vibration circular hole 506 and the center of the lower disk 505 is perpendicular to the line connecting the center of the weighing circular hole 511 and the center of the lower disk 505, with the line connecting the center of the vibration circular hole 506 and the center of the axial through hole 513 as the 0° starting line, counterclockwise, the angle formed by the line connecting the center of the recycling circular hole 510 and the center of the weighing circular hole 511 is between 0° and 90°, the angle formed by the line connecting the center of the recycling circular hole 510 and the center of the vibration circular hole 506 is between 90° and 180°, the vibration circular hole 506, the weighing circular hole 511 and the recycling circular hole 510 do not contact each other; the center of the weighing circular hole 511 and the grasping center of the mechanical claw 206 are located on the same vertical line.

[0040] Specifically, the control and display 202 controls the stepper motor 504, the low-speed motor 203, the weighing sensor 512 and the vibration motor 508 respectively through the circuit; the control and display 202 in the present invention is the prior art and is not the main innovation of this case, so its working principle will not be described in detail.

[0041] See also Figure 3 Specifically, 3 to 6 sleeve groups 603 are stored in the sleeve tube 601. The sleeve tube 601 is cylindrical and hollow inside, with holes opened at the upper and lower ends. The outer diameter of the sleeve group 603 is the same as the opening diameter of the second through hole 408 and the third through hole 409 on the slide 402. The sleeve group 603 includes an upper sleeve 6031 and a lower adhesive attachment 6032. The upper sleeve 6031 is a hollow cylinder, and the upper bottom surface is open to the lower bottom surface. The lower adhesive attachment 6032 is a hollow cylinder, and the upper bottom surface is open and the lower bottom surface is closed. The inner diameter is the same as the inner diameter of the lower adhesive component 6032; the outer diameter of the upper sleeve 6031 is the same as the outer diameter of the lower adhesive component 6032; the upper sleeve 6031 of the sleeve group 603 is placed above the lower adhesive component 6032; the top horizontal plane of the lower adhesive component 6032 is lower than the horizontal plane where the top of the upper disc 501 is located after the sleeve group 603 enters the second through hole 408; the highest horizontal plane of the sleeve group 603 after entering the second through hole 408 is higher than the horizontal plane where the top of the upper disc 501 is located and lower than the horizontal plane where the bottom of the slide rod 401 is located.

[0042] See also Fig. 9 The present invention also provides a method for fully automatically determining the surface adhesion of dust, comprising the following steps:

[0043] S1: Preparation of the fully automatic device for measuring dust surface adhesion before conducting the dust surface adhesion test: Control the stepper motor through the control and display to set the through hole at the lower end of the sleeve tube and the second through hole in the middle of the slide to be on the same vertical line. At this time, the sleeve group falls from the sleeve tube into the first sleeve hole of the upper disc, and the upper sleeve and the lower adhesive attachment overlap;

[0044] S2: Before the start of the dust surface adhesion test, dust is loaded into the feeding funnel of the fully automatic dust surface adhesion test device: the upper disc rotates 90° counterclockwise under the drive of the stepper motor, driving the sleeve group to rotate to the bottom of the feeding funnel, and at the same time, the first gear at the edge of the upper disc drives the second gear to rotate 180° clockwise, and the protrusion rotates with the second gear, driving the slide bar to move closer to the feeding funnel, so that the lower end opening of the feeding funnel, the third through hole on the slide and the sleeve group under the slide are on the same vertical line, and the lower end opening of the feeding funnel is no longer blocked by the slide, and the dust falls into the sleeve group under the action of gravity and fills the upper surface of the upper sleeve;

[0045] S3: After the dust surface adhesion test begins, the fully automatic dust surface adhesion test device starts working: the upper disc rotates 90° counterclockwise driven by the stepper motor, and the sleeve filled with dust rotates to the vibration platform along with the upper disc. The vibration motor under the vibration platform is started through the control and display, and the dust in the sleeve is evenly compacted by controlling the vibration time, ensuring that the adhesion surface contact degree of each layer of dust in the sleeve is consistent;

[0046] S4: The key operation of the fully automatic device for measuring the surface adhesion of dust after the experiment begins: After the vibration operation is completed, the sleeve continues to rotate 90° counterclockwise with the upper disc to the weighing sensor, and the low-speed motor is controlled by the control and display to rotate at a low speed, driving the elastic rope to retract the mechanical claw, and the mechanical claw drives the upper sleeve on the weighing sensor to slowly rise and break; the control and display record the data of the weighing sensor; as the low-speed motor runs, the dust between the upper sleeve and the lower adhesive attachment breaks, and then the upper sleeve is lifted by the elastic rope, and the minimum value before the break is recorded as G1, unit: mg, and the stable value after the dust sample breaks is G2, unit: mg, and the measurement is completed; calculate the adhesion P of the dust, unit: g / cm2:

[0047] S5: After the dust surface adhesion test is completed, the fully automatic dust surface adhesion test device is restored and reset: the low-speed motor is controlled by the control and display to drive the mechanical claw to put the upper sleeve back on the lower adhesive attachment through the elastic rope. The sleeve rotates counterclockwise with the upper disc and falls into the dust collector at the bottom of the lower disc at the recovery hole; the stepper motor is turned on by the control and display, and the upper disc continues to rotate counterclockwise driven by the stepper motor. When the through hole at the lower end of the sleeve tube and the second through hole in the middle of the slide are on the same vertical line, the next round of experimental cycle begins.

[0048] Specifically, during the experimental process of step S1 to step S6, two sets of sleeves are simultaneously located in the sleeve holes of the upper disk, and the current set of sleeves is located in step S1. i During the step, the sleeve is located in the first sleeve hole (or the second sleeve hole), and the latter set of sleeves is in the S i-1 Step, the sleeve is located in the second sleeve hole (or the first sleeve hole); when Si is S1 of the first cycle of operation, S i-1 is 0; when S i For non-first week of work, S i-1 is the last step of the previous cycle; i represents the number of steps in a method for fully automatic determination of dust surface adhesion.

[0049] In the second embodiment, the present invention can not only measure the adhesion between dust and dust, but also measure the adhesion between dust and filter membrane if a filter membrane is fixed on the upper surface of the lower adhesive, and has a wider scope of application.

[0050] In summary, the present invention provides a device and method for fully automatically determining the surface adhesion of dust. By using a low-speed motor in combination with an elastic rope to perform a breaking operation, the error caused by the evaporation problem of water content and the instability of human operation in the vertical breaking method is avoided. At the same time, the elastic rope has a smaller variation in the pulling force on the object than the non-elastic rope, which makes the breaking process slower, leaving sufficient time for accurately capturing the stress changes at the moment of dust peeling. A mechanical device is used to perform experimental operations to reduce experimental errors and greatly improve accuracy and repeatability. At the same time, the feeding process is made more convenient and quick, with a higher degree of automation. The new sleeve assembly and feeding are carried out simultaneously, and multiple processes are synchronized and seamlessly connected, saving operation time. The device provided by the present invention can measure the surface adhesion of dust with a wide range and high accuracy. The data changes in the dust breaking process can be displayed and recorded through the control and display. The obtained data is convenient and reliable, and the calculation method used is scientific and simple. The measurement process consumes less materials and can be recycled and reused.

[0051] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings or directly or indirectly applied in related technical fields are also included in the patent protection scope of the present invention.

Claims

1. A device for fully automatically measuring the surface adhesion of dust, characterized in that: include: Base (1), breaking unit (2), gear unit (3), crank mechanism (4), disc unit (5), sleeve unit (6); The breaking unit (2) comprises: a first bracket (201), a control and display (202), a low-speed motor (203), an elastic rope (204), a pulley (205), and a mechanical claw (206); the gear unit (3) comprises: a first gear (301), a second bracket (302), a second gear (303), and a third bracket (304); the crank mechanism (4) comprises: a sliding rod (401), a sliding plate (402), a sliding groove (403), a bump (404), and a fourth bracket (405); the disc unit (5) comprises: an upper disc (501), a lower disc (505), a stepping motor (504), a weighing sensor (512), and a vibration motor (508); the sleeve unit (5) comprises: a first gear (301), a second bracket (302), a second gear (303), and a third bracket (304); the crank mechanism (4) comprises: a sliding rod (401), a sliding plate (402), a sliding groove (403), a bump (404), and a fourth bracket (405); the disc unit (5) comprises: an upper disc (501), a lower disc (505), a stepping motor (504), a weighing sensor (512), and a vibration motor (508); The element (6) comprises: a sleeve group (603), a sleeve tube (601) and a feeding funnel (602); the breaking unit (2) and the gear unit (3) are fixed on the base (1); the breaking unit (2) is arranged near the left side of the gear unit (3), and a crank mechanism (4) is arranged above the gear unit (3); one side of the crank mechanism (4) is fixed to the base (1), and the other side is fixed to the gear unit (3), and the gear unit (3) drives the crank mechanism (4) to move; the disc unit (5) is arranged on the gear unit (3) and rotates with the gear unit (3); the sleeve unit (6) is fixed above the crank mechanism (4), and performs sleeve adding and feeding actions successively with the action of the crank mechanism (4). A first bracket (201) is fixed in the vertical direction on one side of the base (1), and a control and display device (202) is fixed on the upper part of the first bracket (201); a low-speed motor (203) is fixed on the first bracket (201) above the control and display device (202); the output end of the low-speed motor (203) is connected to an elastic rope (204), and the elastic rope (204) passes through a pulley (205) fixed on the back of the control and display device (202); a mechanical claw (206) is fixed to the end of the elastic rope (204); a second bracket (302) is fixed on the side of the base (1) close to the first bracket (201); a first gear (301) is provided on the top of the second bracket (302) ; A third bracket (304) is fixed on the side of the base (1) away from the first bracket (201); a second gear (303) is provided on the top of the third bracket (304); the gear teeth of the first gear (301) are arranged at the edge of the upper disk (501); the axis of the upper disk (501) is connected to the output end of the stepping motor (504), and the upper disk (501) rotates around its own axis driven by the stepping motor (504), driving the first gear (301) to rotate synchronously; the upper disk (501) is symmetrically provided with a first sleeve hole (502) and a second sleeve hole (503); the gear teeth of the second gear (303) and the first gear (301) are meshed with each other and are installed on the same horizontal plane;The second gear (303) rotates around the center of the third bracket (304) driven by the first gear (301); a lower disc (505) is provided adjacent to the lower bottom surface of the upper disc (501); an axial through hole (513) on the lower disc (505) is fixed to the second bracket (302); a vibration circular hole (506), a recovery circular hole (510), and a weighing circular hole (511) are provided at the edge of the lower disc (505); the crank mechanism is arranged above the first gear (301) and the second gear (303); the crank mechanism (4) is connected to a cylindrical protrusion (404) on the upper surface of the second gear (303) through a sliding rod (401) on one side close to the second gear (303), and the other side is fixed to the base (1) through a fourth bracket (405); the protrusion (404) is fixed on the second gear (303) The outer ring of the surface; a ball bearing (406) is provided on the side of the slide bar (401) close to the second gear (303) and embedded in the protrusion (404), and rotates with the second gear (303); the other end of the slide bar (401) is connected to the slide plate (402) through a hinge; the slide plate (402) moves in the slide groove (403) of the crank mechanism (4); a second through hole (408) and a third through hole (409) are provided on the slide plate (402); the second through hole (408) and the third through hole (409) have the same aperture; a first through hole (407) is provided on the side of the slide bar (401) away from the second gear (303); a sleeve tube (601) and a feeding funnel (602) are provided on the upper part of the slide groove (403); an opening is provided below the feeding funnel (602), and the size of the opening is consistent with the aperture of the third through hole (409). ; 2. The device for fully automatically measuring the surface adhesion of dust according to claim 1, characterized in that: A vibration platform (507) is provided in the vibration circular hole (506) of the lower disc (505); the upper surface of the vibration platform (507) and the upper surface of the lower disc (505) are located on the same horizontal plane; the vibration platform (507) is close to the lower disc (505) but does not touch it; vibration platform support legs (509) are provided below the vibration platform (507) to connect to the base (1); a vibration motor (508) is fixedly installed on the bottom surface of the vibration platform (507); a weighing sensor (512) is placed in the weighing circular hole (511) of the lower disc (505); the upper surface of the weighing sensor (512) and the lower surface of the upper disc (501) are arranged on the same horizontal plane; the centers of the vibration circular hole (506), the weighing circular hole (511) and the recovery circular hole (510) on the lower disc (505) are all located The vibrating circular hole (506) is located on the same circle with the center of the lower circular disk (505) as the center; the line connecting the center of the vibrating circular hole (506) and the center of the lower circular disk (505) is perpendicular to the line connecting the center of the weighing circular hole (511) and the center of the lower circular disk (505); the line connecting the center of the vibrating circular hole (506) and the center of the axial through hole (513) is used as the 0° starting line, and in a counterclockwise direction, the center of the recycling circular hole (510) and the center of the weighing circular hole (511) are perpendicular to each other. The angle formed by the line connecting the centers of the recycling circular hole (510) and the vibration circular hole (506) is between 0 and 90 degrees, the angle formed by the line connecting the centers of the recycling circular hole (510) and the vibration circular hole (506) is between 90 and 180 degrees, and the vibration circular hole (506), the weighing circular hole (511) and the recycling circular hole (510) are not in contact with each other; the center of the weighing circular hole (511) and the grasping center of the mechanical claw (206) are located on the same vertical line.

3. The device for fully automatically measuring the surface adhesion of dust according to claim 1, characterized in that: The control and display (202) controls the stepping motor (504), the low-speed motor (203), the weighing sensor (512) and the vibration motor (508) respectively through circuits.

4. The device for fully automatically measuring the surface adhesion of dust according to claim 1, characterized in that: The sleeve tube (601) stores 3 to 6 sleeve groups (603); the sleeve tube (601) is cylindrical and hollow inside, with holes opened at the upper and lower ends; the outer diameter of the sleeve group (603) is the same as the opening diameter of the second through hole (408) and the third through hole (409) on the slide (402); the sleeve group (603) comprises an upper sleeve (6031) and a lower adhesive member (6032); the upper sleeve (6031) is hollow cylindrical, with an upper bottom surface open to a lower bottom surface; the lower adhesive member (6032) is hollow cylindrical, with an upper bottom surface open and a lower bottom surface closed; the inner diameter of the upper sleeve (6031) is The diameter of the upper sleeve (6031) is the same as the inner diameter of the lower adhesive attachment (6032); the outer diameter of the upper sleeve (6031) is the same as the outer diameter of the lower adhesive attachment (6032); the upper sleeve (6031) of the sleeve assembly (603) is placed above the lower adhesive attachment (6032); the top horizontal plane of the lower adhesive attachment (6032) is lower than the horizontal plane where the top of the upper disc (501) is located after the sleeve assembly (603) enters the second through hole (408); the highest horizontal plane of the sleeve assembly (603) after entering the second through hole (408) is higher than the horizontal plane where the top of the upper disc (501) is located and lower than the horizontal plane where the bottom of the slide rod is located.

5. A method based on the device for fully automatic determination of dust surface adhesion according to claim 1, characterized in that: The following steps are involved: S1: Preparation of the fully automatic device for measuring dust surface adhesion before conducting the dust surface adhesion test: Control the stepper motor through the control and display to set the through hole at the lower end of the sleeve tube and the second through hole in the middle of the slide to be on the same vertical line. At this time, the sleeve group falls from the sleeve tube into the first sleeve hole of the upper disc, and the upper sleeve and the lower adhesive attachment overlap; S2: Before the start of the dust surface adhesion test, dust is loaded into the feeding funnel of the fully automatic dust surface adhesion test device: the upper disc rotates 90° counterclockwise under the drive of the stepper motor, driving the sleeve group to rotate to the bottom of the feeding funnel, and at the same time, the first gear at the edge of the upper disc drives the second gear to rotate 180° clockwise, and the protrusion rotates with the second gear, driving the slide bar to move closer to the feeding funnel, so that the lower end opening of the feeding funnel, the third through hole on the slide and the sleeve group under the slide are on the same vertical line, and the lower end opening of the feeding funnel is no longer blocked by the slide, and the dust falls into the sleeve group under the action of gravity and fills the upper surface of the upper sleeve; S3: After the dust surface adhesion test begins, the fully automatic dust surface adhesion test device starts working: the upper disc rotates 90° counterclockwise driven by the stepper motor, and the sleeve filled with dust rotates to the vibration platform along with the upper disc. The vibration motor under the vibration platform is started through the control and display, and the dust in the sleeve is evenly compacted by controlling the vibration time, ensuring that the adhesion surface contact degree of each layer of dust in the sleeve is consistent; S4: The key operation of the fully automatic device for measuring the surface adhesion of dust after the experiment begins: After the vibration operation is completed, the sleeve continues to rotate 90° counterclockwise with the upper disc to the weighing sensor, and the low-speed motor is controlled by the control and display to drive the elastic rope to retract the mechanical claw, and the mechanical claw drives the upper sleeve on the weighing sensor to slowly rise and break; the control and display record the data of the weighing sensor; as the low-speed motor runs, the dust between the upper sleeve and the lower adhesive attachment breaks, and then the upper sleeve is lifted by the elastic rope, and the minimum value before the break is recorded as G1, unit: mg, and the stable value after the dust sample breaks is G2, unit: mg, and the measurement is completed; calculate the adhesion P of the dust, unit: g / cm 2 : S5: After the dust surface adhesion test is completed, the fully automatic dust surface adhesion test device is restored and reset: the low-speed motor is controlled by the control and display to drive the mechanical claw to put the upper sleeve back on the lower adhesive attachment through the elastic rope. The sleeve rotates counterclockwise with the upper disc and falls into the dust collector at the bottom of the lower disc at the recovery hole; the stepper motor is turned on by the control and display, and the upper disc continues to rotate counterclockwise driven by the stepper motor. When the through hole at the lower end of the sleeve tube and the second through hole in the middle of the slide are on the same vertical line, the next round of experimental cycle begins.

6. The method according to claim 5, characterized in that: During the experimental process of steps S1 to S5, two groups of sleeves are simultaneously located in the sleeve hole of the upper disk. When the previous group of sleeves is in the Si step, the sleeves are located in the first sleeve hole or the second sleeve hole, and when the latter group of sleeves is in the Si-1 step, the sleeves are located in the second sleeve hole or the first sleeve hole; when Si is S1 of the first working cycle, Si-1 is 0; when Si is not the first working cycle, Si-1 is the last step of the previous cycle; i represents the number of steps in a method for fully automatic determination of dust surface adhesion.

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