CN111855496A - Negative pressure rotary paint viscosity detection method - Google Patents
Negative pressure rotary paint viscosity detection method Download PDFInfo
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- CN111855496A CN111855496A CN202010791115.2A CN202010791115A CN111855496A CN 111855496 A CN111855496 A CN 111855496A CN 202010791115 A CN202010791115 A CN 202010791115A CN 111855496 A CN111855496 A CN 111855496A
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- permanent magnet
- detection container
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- 238000001514 detection method Methods 0.000 title claims abstract description 81
- 239000003973 paint Substances 0.000 title claims abstract description 36
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 230000005389 magnetism Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Coating Apparatus (AREA)
Abstract
The invention discloses a method for detecting the viscosity of a negative-pressure rotary coating, which mainly comprises the following steps: s1, lofting; s2, debugging; s3, detecting; s4, exhausting and preventing disturbance; the negative pressure rotary paint viscosity detection method further relates to negative pressure rotary paint viscosity detection equipment, which comprises a base plate and a rack which is arranged on the base plate and can rotate in a telescopic mode, wherein a detection container with an open upper end is movably arranged on the base plate through a limiting mechanism, a driving motor is arranged on the rack, an output shaft of the driving motor is connected with a cylindrical rotor through a connecting rod, a mounting groove is coaxially formed in the rotor, a magnetism isolating plate is vertically arranged in the mounting groove, and the mounting groove is divided into two control grooves with the same size through the magnetism isolating plate. According to the invention, through utilizing the magnetic force action between the first permanent magnet plate and the second permanent magnet plate, bubbles on the surface of the rotor can be sucked and discharged to the outside, and further, the influence of bubbles adhered to the surface of the rotor on the detection precision can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of chemical detection equipment, in particular to a negative-pressure rotary paint viscosity detection method.
Background
Liquid paints, especially paints containing dense pigments, are usually kept at a high viscosity value, which is the original viscosity of the paint, for long-term storage in containers, and are applied by setting the viscosity to a low value with a thinner to suit the application requirements, which is called the application viscosity.
In the actual use process of the coating, the viscosity of the coating often directly influences the processing precision of the coating, so that the coating needs to be detected annually before the coating is used, a rotary viscometer is generally used in the prior art, the method is to detect the rotating speed of the rotating part in the paint to be detected in real time and analyze the rotating speed to obtain the viscosity value of the paint, however, when the rotating part is placed in the paint to be detected by the existing viscosity detection equipment, certain bubbles are often attached to the surface of the coating, and the bubbles are difficult to float to the liquid level of the coating by themselves due to the fact that the coating is large in age, the existence of the bubbles greatly influences the precision of rotating speed detection, meanwhile, the rotation of the rotating part can drive the paint to move, the paint collides with the detection container, and therefore the detection container can shake, and the detection result is inaccurate.
Disclosure of Invention
The invention aims to solve the problem that the existing paint viscosity detection method has the defect that bubbles are easy to adhere to the surface of a rotating part to influence the viscosity detection result of the paint.
In order to achieve the purpose, the invention adopts the following technical scheme:
a negative pressure rotary paint viscosity detection method mainly comprises the following steps:
s1, lofting: placing the detection container in the placing groove, and enabling the plurality of arc-shaped plates to be abutted against the side wall of the detection container by utilizing the elastic force action of the plurality of limiting springs, so that the influence of vibration of the device on the detection container during detection can be reduced, and then pouring the coating to be detected into the detection container;
s2, debugging: the position of the rotor is adjusted through the rack, the rotor is placed in the detection container, the rotor is kept to be overlapped with the vertical axis of the detection container, and the rotor is completely submerged in the paint in the detection container;
s3, detection: starting a driving motor, driving a rotor to rotate at a given rotating speed by the driving motor through a connecting rod, measuring the torque of the paint in the detection container on the inner wall of the detection container when the rotor rotates through an external detection device, and obtaining the viscosity value of the paint according to a conversion formula;
s4, exhausting and preventing disturbance: when the rotor rotates, the first permanent magnet plate intermittently extrudes the corresponding driving area by utilizing the magnetic force between the first permanent magnet plate and the second permanent magnet plate, so that a negative pressure area is formed at the filter layer to suck and discharge bubbles on the surface of the rotor to the outside, and the influence of the bubbles adhered to the surface of the rotor on the detection precision can be effectively reduced;
the negative pressure rotary paint viscosity detection method also relates to a negative pressure rotary paint viscosity detection device, which comprises a substrate and a rack which is arranged on the substrate and can stretch and rotate, wherein a detection container with an open upper end is movably arranged on the substrate through a limiting mechanism, a driving motor is arranged on the rack, an output shaft of the driving motor is connected with a cylindrical rotor through a connecting rod, a mounting groove is coaxially formed in the rotor, a magnet partition plate is vertically arranged in the mounting groove and divides the mounting groove into two control grooves with the same size, and a first permanent magnet plate is hermetically and slidably connected in each control groove;
the first permanent magnet plate divides the corresponding control groove into a driving area and a buffer area, the buffer area is close to one side of the magnetism isolating plate, the side wall of the detection container is symmetrically provided with second permanent magnet plates matched with the first permanent magnet plates, the side wall of the rotor is symmetrically provided with temporary storage grooves, a filter layer is arranged at the notch of each temporary storage groove, and an air inlet pipe is communicated between each temporary storage groove and the corresponding driving area;
the connecting rod is provided with a circulation groove, a through hole is communicated between the groove wall at the upper end of the circulation groove and the outside, an exhaust pipe is communicated between the driving area and the circulation groove, and a communicating pipe is communicated between the buffer area and the circulation groove.
Preferably, the limiting mechanism comprises a circular placing groove formed in the upper end face of the base plate, a plurality of limiting springs are uniformly and fixedly connected to the inner wall of the placing groove along the radial direction, an arc-shaped plate is fixedly connected to one end, far away from the wall of the placing groove, of each limiting spring, and one ends, far away from the corresponding limiting springs, of the plurality of arc-shaped plates are abutted to the side wall of the detection container.
Preferably, a first check valve and a second check valve are respectively installed in the air inlet pipe and the air outlet pipe.
Compared with the prior art, the invention has the beneficial effects that: through setting up stop gear, utilize spacing spring to the injecing of detecting the container, both can avoid the testing process, detect the container and take place to rock, influence the accuracy of testing result, made things convenient for placing of detecting the container again, through utilizing the magnetic force effect between first permanent magnetism board and the second permanent magnetism board, can discharge the bubble suction on rotor surface to external, and then can effectively reduce rotor surface adhesion bubble and lead to the fact the influence to the detection precision.
Drawings
FIG. 1 is a schematic structural diagram of a negative pressure rotary paint viscosity detection apparatus according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic view of a partial internal structure of a rotor of the negative pressure rotary paint viscosity detecting apparatus according to the present invention;
fig. 4 is a schematic partial structural view of a limiting mechanism in the negative pressure rotary paint viscosity detection apparatus according to the present invention.
In the figure: the device comprises a base plate 1, a placing groove 2, a limiting spring 3, an arc-shaped plate 4, a rack 5, a driving motor 6, a connecting rod 7, a rotor 8, a mounting groove 9, a magnetic isolation plate 10, a first permanent magnetic plate 11, a temporary storage groove 12, a filter layer 13, an air inlet pipe 14, an air outlet pipe 15, a communicating pipe 16, a circulation groove 17, a detection container 18 and a second permanent magnetic plate 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a method for detecting the viscosity of a negative pressure rotary paint mainly comprises the following steps:
s1, lofting: placing the detection container 18 in the placing groove 2, and enabling the arc-shaped plates 4 to be abutted against the side wall of the detection container 18 by utilizing the elastic force action of the limiting springs 3, so that the influence of device vibration on the detection container 18 during detection can be reduced, and then pouring the coating to be detected into the detection container 18;
s2, debugging: the position of the rotor 8 is adjusted through the frame 5, the rotor 8 is placed in the detection container 18, the vertical axis of the rotor 8 and the vertical axis of the detection container 18 are kept coincident, and the rotor is completely submerged in the paint in the detection container 18;
s3, detection: starting a driving motor 6, driving the rotor 8 to rotate at a given rotating speed by the driving motor 6 through a connecting rod 7, measuring the torque of the paint in the detection container 18 on the inner wall of the detection container 18 when the rotor 8 rotates through an external detection device, and obtaining the viscosity value of the paint according to a conversion formula;
s4, exhausting and preventing disturbance: when the rotor 8 rotates, the first permanent magnet plate 11 intermittently extrudes the corresponding driving area by utilizing the magnetic force action between the first permanent magnet plate 11 and the second permanent magnet plate 19, so that a negative pressure area is formed at the filter layer 13 to suck and discharge bubbles on the surface of the rotor 8 to the outside, and further, the influence of bubbles adhered to the surface of the rotor 8 on the detection precision can be effectively reduced;
the negative pressure rotary paint viscosity detection method also relates to a negative pressure rotary paint viscosity detection device, which comprises a substrate 1 and a frame 5 which is arranged on the substrate 1 and can stretch and rotate, wherein the frame 5 can drive a rotor 8 to move in the horizontal and vertical directions (which is the prior art and is not described herein), so that the position of the rotor 8 can be conveniently adjusted, a detection container 18 with an open upper end is movably arranged on the substrate 1 through a limiting mechanism, a torque detection mechanism is arranged on the detection container 18, a driving motor 6 is arranged on the frame 5, an output shaft of the driving motor 6 is fixedly connected with a cylindrical rotor 8 through a connecting rod 7, a mounting groove 9 is coaxially arranged on the rotor 8, a magnetic baffle plate 10 is vertically and fixedly arranged in the mounting groove 9, the mounting groove 9 is divided into two control grooves with the same size by the magnetic baffle plate 10, and a first permanent magnet plate 11 is hermetically and slidably connected in each control groove, the magnetic isolation plate 10 can prevent the magnetic action between the two first permanent magnet plates 11 from influencing the movement of the two first permanent magnet plates 11;
the first permanent magnet plate divides the corresponding control groove into a driving area and a buffer area, the buffer area is close to one side of the magnetic isolation plate 10, the side wall of the detection container 18 is symmetrically provided with a second permanent magnet plate 19 matched with the first permanent magnet plate 11, the side wall of the rotor 8 is symmetrically provided with temporary storage grooves 12, a filter layer 13 is arranged at the notch of each temporary storage groove 12, the filter layer 13 is made of a waterproof breathable material made of polytetrafluoroethylene, can isolate external water molecules from entering the temporary storage grooves 12, but external gas can freely pass through the temporary storage grooves 12, the friction coefficient of the filter layer is extremely low, the influence on the viscosity detection of the coating is avoided, an air inlet pipe 14 is communicated between each temporary storage groove 12 and the corresponding driving area, a first one-way valve is arranged in the air inlet pipe 14, and only the gas or liquid in the temporary storage grooves 12 is allowed to enter the driving area through;
the circulation groove 17 has been seted up on connecting rod 7, and the intercommunication is equipped with the through-hole between circulation groove 17 upper end cell wall and the external world, all communicate between every drive zone and the circulation groove 17 and be equipped with blast pipe 15, install the second check valve in the blast pipe 15, the second check valve only allows the drive zone interior gas or liquid to pass through blast pipe 15 and get into circulation groove 17, all communicate between every buffer zone and the circulation groove 17 and be equipped with communicating pipe 16, thereby can make the buffer zone internal pressure the same with ambient pressure all the time, guarantee that first permanent magnetism board 11 can freely slide in the control tank.
According to the invention, the limiting mechanism comprises a circular placing groove 2 formed in the upper end face of a base plate 1, a plurality of limiting springs 3 are uniformly and fixedly connected to the inner wall of the placing groove 2 along the radial direction, an arc-shaped plate 4 is fixedly connected to one end, far away from the groove wall of the placing groove 2, of each limiting spring 3, a rubber pad is glued to one side face, far away from the corresponding limiting spring 3, of each arc-shaped plate 4, so that the friction force between the arc-shaped plate 4 and the side wall of a detection container 18 can be improved, and one ends, far away from the corresponding limiting springs 3, of the arc-shaped plates 4 are abutted to the side.
The invention can be illustrated by the following operating modes: when the driving motor 6 drives the rotor 8 to rotate in the coating through the connecting rod 7, the two first permanent magnet plates 11 also rotate along with the rotor, under the action of the magnetic force of the second permanent magnet plate 19, the first permanent magnet plate 11 slides back and forth in the horizontal direction in the corresponding control area, when the first permanent magnet plate 11 slides towards the direction of the extrusion buffer area, negative pressure is generated in the driving area to suck the gas in the corresponding temporary storage groove 12 into the driving area through the gas inlet pipe 14, so that negative pressure is generated at the filter layer 13 corresponding to the notch of the temporary storage groove 12, and then the free air bubbles on the surface of the rotor 8 and in the coating can be sucked into the driving area, when the first permanent magnet plate 11 moves towards the direction of extruding the driving area, the gas in the driving area is discharged to the outside through the exhaust pipe 15, the circulation groove 17 and the through hole in sequence, reciprocating in this way, the influence of bubbles adhered to the surface of the rotor 8 on the detection precision can be effectively reduced.
It is worth noting that by arranging the limiting mechanism, the vibration of the detection container 18 can be buffered by utilizing the buffering effect of the limiting spring 3, so that the stability of the detection container 18 is kept, and the detection container 18 is convenient to place.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. The method for detecting the viscosity of the negative-pressure rotary coating is characterized by mainly comprising the following steps of:
s1, lofting: the detection container (18) is placed in the placing groove (2), the plurality of arc-shaped plates (4) are abutted against the side wall of the detection container (18) under the elastic force action of the plurality of limiting springs (3), so that the influence of vibration of the device on the detection container (18) during detection can be reduced, and then the coating to be detected is poured into the detection container (18);
s2, debugging: the position of the rotor (8) is adjusted through the frame (5), the rotor (8) is placed in the detection container (18), the rotor (8) is kept to be overlapped with the vertical axis of the detection container (18), and the rotor is completely submerged in the paint in the detection container (18);
s3, detection: starting a driving motor (6), driving a rotor (8) to rotate at a given rotating speed by the driving motor (6) through a connecting rod (7), measuring the torque of the paint in a detection container (18) on the inner wall of the detection container (18) when the rotor (8) rotates through an external detection device, and obtaining the viscosity value of the paint according to a conversion formula;
s4, exhausting and preventing disturbance: when the rotor (8) rotates, the first permanent magnet plate (11) intermittently extrudes the corresponding driving area by utilizing the magnetic force action between the first permanent magnet plate (11) and the second permanent magnet plate (19), so that a negative pressure area is formed at the filter layer (13) to suck and discharge bubbles on the surface of the rotor (8) to the outside, and further, the influence of the bubbles adhered to the surface of the rotor (8) on the detection precision can be effectively reduced;
the negative pressure rotary paint viscosity detection method further relates to negative pressure rotary paint viscosity detection equipment, which comprises a substrate (1) and a rack (5) which is arranged on the substrate (1) and can stretch and rotate, wherein a detection container (18) with an open upper end is movably arranged on the substrate (1) through a limiting mechanism, a driving motor (6) is arranged on the rack (5), an output shaft of the driving motor (6) is connected with a cylindrical rotor (8) through a connecting rod (7), a mounting groove (9) is coaxially formed in the rotor (8), a magnetism isolating plate (10) is vertically arranged in the mounting groove (9), the mounting groove (9) is divided into two control grooves with the same size by the magnetism isolating plate (10), and a first permanent magnet plate (11) is hermetically and slidably connected in each control groove;
the first permanent magnet plate divides the corresponding control groove into a driving area and a buffer area, the buffer area is close to one side of the magnetism isolating plate (10), the side wall of the detection container (18) is symmetrically provided with a second permanent magnet plate (19) matched with the first permanent magnet plate (11), the side wall of the rotor (8) is symmetrically provided with temporary storage grooves (12), a filter layer (13) is arranged at the notch of each temporary storage groove (12), and an air inlet pipe (14) is communicated between each temporary storage groove (12) and the corresponding driving area;
the connecting rod (7) is provided with a circulation groove (17), a through hole is formed between the upper end groove wall of the circulation groove (17) and the outside in a communicating mode, an exhaust pipe (15) is arranged between each driving area and the circulation groove (17) in a communicating mode, and a communicating pipe (16) is arranged between each buffering area and the circulation groove (17) in a communicating mode.
2. The method for detecting the viscosity of the negative-pressure rotary coating according to claim 1, wherein the limiting mechanism comprises a circular placing groove (2) formed in the upper end surface of the base plate (1), a plurality of limiting springs (3) are uniformly and fixedly connected to the inner wall of the placing groove (2) along the radial direction, an arc-shaped plate (4) is fixedly connected to one end of each limiting spring (3) far away from the wall of the placing groove (2), and one ends of the arc-shaped plates (4) far away from the corresponding limiting springs (3) are abutted against the side wall of the detection container (18).
3. The method for detecting the viscosity of the negative-pressure rotary paint as claimed in claim 1, wherein a first one-way valve and a second one-way valve are respectively arranged in the air inlet pipe (14) and the air outlet pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010791115.2A CN111855496B (en) | 2020-08-07 | 2020-08-07 | Negative pressure rotary type paint viscosity detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010791115.2A CN111855496B (en) | 2020-08-07 | 2020-08-07 | Negative pressure rotary type paint viscosity detection method |
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| CN111855496A true CN111855496A (en) | 2020-10-30 |
| CN111855496B CN111855496B (en) | 2023-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459958A (en) * | 2022-02-11 | 2022-05-10 | 华北电力大学（保定） | Device and method for quickly measuring airflow characteristics |
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| CN114459958B (en) * | 2022-02-11 | 2023-07-21 | 华北电力大学（保定） | Device and method for rapidly measuring air flow characteristics |
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| CN111855496B (en) | 2023-11-10 |
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