KR102651121B1 - Automatic weighing device for fine dust - Google Patents

Abstract

An automatic fine dust weighing device is provided that can more clearly measure the concentration of fine dust in the air. The automatic fine dust weighing device according to the present invention includes a main body formed with a weighing space blocked from the outside, a filter carrier on which a filter for measuring fine dust is seated, a magazine unit into which a plurality of filter carriers are removably inserted, and a main body. It is formed in a filter silo in which a plurality of magazine units are inserted to expose the filter carrier to the weighing space, a weighing unit installed inside the weighing space to measure the weight of the filter, and a magazine unit and a weighing unit installed inside the weighing space. It includes a transfer unit that transfers the filter carrier, an identification unit installed in the transfer unit to identify the filter carrier, and a temperature and humidity control unit that maintains constant temperature and humidity inside the weighing space.

Description

Automatic weighing device for fine dust}

The present invention relates to an automatic fine dust weighing device, and more specifically, to an automatic fine dust weighing device that can more clearly measure the concentration of fine dust in the atmosphere.

Fine dust refers to dust whose particles are so small that they cannot be seen. Because the particles of fine dust are small, it is difficult to determine the concentration with the naked eye, and because it is harmful to the human body, many people check the concentration of fine dust before engaging in outdoor activities and decide whether or not to engage in outdoor activities. Recently, with the advancement of technology, the concentration of fine dust has been increasing, and the daily concentration of fine dust has become one of people's main concerns.

Representative methods of measuring the concentration of fine dust include shining light on air containing fine dust and measuring the concentration through the degree of refraction of the light, and measuring the concentration by weighing the weight of the fine dust with a scale. There is a way to do it. Among them, in the fine dust weighing method, since the weight of fine dust itself is very light, the weight value easily changes depending on temperature, humidity, or degree of sealing, so it is very important to keep the temperature and humidity of the measurement space constant. Accordingly, in the past, there was a fine dust weighing device with a structure that always kept the temperature and humidity of the fine dust weight measurement space constant.

However, the conventional fine dust weight measuring device has a structure of simply opening the door and inserting the filter that collects fine dust into the measurement space, which has the problem of allowing a large amount of external air to flow into the measurement space in the process. Accordingly, there was a problem in that the temperature and humidity values of the measurement space temporarily fluctuated significantly, resulting in a large error in the fine dust weight measurement value.

Republic of Korea Patent Publication No. 10-2017-0105990 (2017. 09. 20)

The technical problem to be achieved by the present invention is to provide an automatic fine dust weighing device that can more clearly measure the concentration of fine dust in the atmosphere.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

The automatic fine dust weighing device according to the present invention includes a main body formed with a weighing space blocked from the outside, a filter carrier on which a filter for measuring fine dust is seated, a magazine unit into which a plurality of the filter carriers are detachably inserted, and the main body. Formed, a filter silo in which a plurality of the magazine units are inserted to expose the filter carrier to the weighing space, a weighing unit installed inside the weighing space to measure the weight of the filter, and a weighing unit installed inside the weighing space and the magazine It includes a unit and a transfer unit that transfers the filter carrier to the weighing unit, an identification unit installed in the transfer unit to identify the filter carrier, and a temperature and humidity control unit that keeps the temperature and humidity inside the weighing space constant.

The filter silo may include a frame installed on the main body, and a partition dividing the inside of the frame to form a slot into which the magazine unit is inserted.

The automatic fine dust weighing device may further include a silo door part installed in the main body to cover the filter silo and seal the interior.

The automatic fine dust weighing device may further include an internal door unit installed for each slot unit inside the filter silo located inside the weighing space to open and close the slot unit.

The inner door part includes a door hinged to the frame and an opening protrusion protruding from the door into the slot part, and when the magazine unit is inserted into the slot part, the magazine unit pushes the opening protrusion to open the door. can be opened.

The magazine unit may further include a protruding pressing portion whose surface in contact with the opening protrusion protrudes into a curved surface.

The open protrusion may further include a contact roller on a surface in contact with the protruding pressing portion.

It may further include an elastic member that elastically couples between the frame and the inner door portion to close the inner door portion, and a recognition portion installed on the frame to recognize an open state of the inner door portion.

The filter carrier includes a filter seating portion on which the filter is seated on an upper surface, a through hole through which the measuring plate of the weighing unit passes in the center, and a cut portion formed on a side of the through hole. And it may include an identification display unit on the side of the filter seating unit where information identifying the filter is displayed and recognized by the identification unit.

The transfer unit includes a fork inserted into the lower portion of the filter carrier to hold the filter carrier; And it may further include a grounding protrusion that protrudes from the fork and contacts the filter to remove static electricity from the filter.

According to the present invention, it is possible to weigh the concentration of fine dust very precisely. In particular, a unique number is automatically assigned to each filter, allowing information on the process from constant weight to weighing to be stored and checked, making filter management very convenient.

In addition, the present invention can completely block the inflow of external air during the process of inserting the filter into the measurement space by double sealing the space between the fine dust measurement space and the outside, so that the temperature and humidity of the measurement space can always be kept constant.

Figure 1 is a perspective view of an automatic fine dust weighing device according to an embodiment of the present invention.
Figure 2 is a partially cut-away perspective view showing the internal structure of the automatic fine dust weighing device of Figure 1.
Figure 3 is an enlarged perspective view showing the filter silo and magazine unit of the automatic fine dust weighing device of Figure 1 separately from the front.
Figure 4 is an enlarged perspective view showing the filter silo and magazine unit of the automatic fine dust weighing device of Figure 1 separately from the rear.
Figure 5 is a perspective view showing the operating structure of the inner door part of Figure 4.
Figure 6 is a perspective view showing the transfer unit of the automatic fine dust weighing device of Figure 1.
Figure 7 is a perspective view showing the gripping unit and filter carrier of the automatic fine dust weighing device of Figure 1.
Figure 8 is a perspective view showing the weighing unit of the automatic fine dust weighing device of Figure 1.
Figure 9 is a flowchart explaining a method of measuring the weight of fine dust in the automatic fine dust weighing device of Figure 1.
Figures 10 to 16 are diagrams schematically showing the operation of the automatic fine dust weighing device of Figure 1.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, with reference to FIGS. 1 to 16, an automatic fine dust weighing device according to an embodiment of the present invention will be described in detail.

Figure 1 is a perspective view of an automatic fine dust weighing device according to an embodiment of the present invention, and Figure 2 is a partially cut-away perspective view showing the internal structure of the automatic fine dust weighing device of Figure 1.

Referring to Figures 1 and 2, the fine dust automatic weighing device (1) according to the present invention assigns a unique number or code to each filter for collecting fine dust and automatically performs all processes from the constant weight of the filter to weighing. You can easily manage information by converting it into data. In addition, the weighing space 11 inside the main body 10 is double sealed by the silo door part 12 and the inner door part (see 150 in FIG. 4), so that the temperature and humidity can always be kept constant. Accordingly, even if the silo door part 12 is opened to insert the filter into the weighing space 11, it is formed as a double sealed structure in which the inner door part (see 150 in FIG. 4) is closed inside, so the user can enter the weighing space. The silo door part (12) can be opened and closed freely regardless of the temperature and humidity maintained in (11). In addition, the inner door part (see 150 in FIG. 4) of the present invention is formed in a structure that opens automatically only when the filter is inserted into the weighing space 11, making it easy to use.

The automatic fine dust weighing device 1 according to the present invention includes a main body 10 with a weighing space 11 blocked from the outside, a filter carrier 300 on which a filter for measuring fine dust is mounted, and a plurality of filters. A magazine unit 200 into which the carrier 300 is removably inserted, and a filter silo 100 formed in the main body into which a plurality of magazine units 200 are inserted to expose the filter carrier 300 to the weighing space 11. ) and a weighing unit 600 installed inside the weighing space 11 to measure the weight of the filter, and a filter carrier 300 installed inside the weighing space 11 with the magazine unit 200 and the weighing unit 600. ), a transfer unit 400 that transfers the filter, a gripping unit 500 installed on the transfer unit 400 to identify the filter carrier 300, and temperature and humidity control that keeps the temperature and humidity within the weighing space 11 constant. Includes unit 700.

The automatic fine dust weighing device (1) according to the present invention is largely comprised of a filter silo (100) that accommodates a filter in a weighing space (11) where constant temperature and humidity conditions are maintained by a temperature and humidity control unit (700), and a filter silo. It consists of a transfer unit 400 that transfers the filter accommodated in 100 to the weighing unit 600, and a weighing unit 600 that measures the weight of the transferred filter. At this time, the filter is transported while accommodated in a filter carrier (see 300 in FIG. 7).

The main body 10 is a structure that forms a space for weighing the filter, and forms a sealed weighing space 11 therein. The main body 10 can be made transparent to visually inspect the weighing process performed in the weighing space 11, and the section where there is no movement or change in the weighing process can be formed as an opaque window. For example, in Figure 2, the lower portion where the temperature and humidity control unit 700 is accommodated may be formed as an opaque window, and the upper portion where the transfer unit 400 and the weighing unit 600 may be accommodated may be formed as a transparent window. The main body 10 can be formed in various forms as long as it has a structure capable of forming a weighing space 11, which is a sealed empty space inside. Therefore, there is no need to limit understanding of the main body 10 to the shape shown. The main body 10 can be formed in various different forms depending on the implementation method or overall structure of the device.

The filter silo 100 is formed inside the main body 10 and accommodates a filter inserted into the main body 10. It functions to expose the accommodated filter to the weighing space (11). At this time, the filter is accommodated in the filter silo 100 while being seated on the filter carrier (see 300 in FIG. 7) as described above. The main body 10 has a silo door 12 formed at a position overlapping with the filter silo 100, so that a filter can be inserted by temporarily opening the outer surface of the filter silo 100 through the silo door 12. You can. In addition, the filter silo 100 has an internal door 150 formed on the side in the direction of the weighing space 11, so that the inner surface of the filter silo 100 can be opened and closed. In other words, the filter silo 100 has a double door structure in which an inner door 150 and a silo door 12 are formed on the inner and outer sides, respectively, and can be opened and closed independently of each other. The opening and closing structure of the filter silo 100 will be described in more detail later.

Meanwhile, the transfer unit 400 functions to transfer the filter carrier (see 300 in FIG. 7) accommodated in the filter silo 100. The transfer unit 400 is located on the side of the weighing space 11 of the filter silo 100 and can extract and transfer the filter carrier 300 from the rear of the filter silo 100. Referring to FIG. 6 for a moment, the transfer unit 400 includes a fixed shaft 410 installed in the main body 10, a first moving shaft 420 that moves left and right based on the fixed shaft 410, and a first It includes a second moving axis 430 that moves back and forth based on the moving axis 420, and a gripping unit 500 that grips the filter carrier 300. At this time, the gripping unit 500 can move up and down based on the second moving axis 430. Accordingly, the transfer unit 400 can freely move the gripping unit 500 in three axes. The transfer unit 400 transfers the filter carrier 300 inserted into the filter silo 100 to the weighing unit 600, or transfers the filter carrier 300 that has been weighed in the weighing unit 600 back to the filter silo 100. It can be transported and recovered. Accordingly, the transfer unit 400 can move within a range that can reach the filter silo 100 and the weighing unit 600.

The weighing unit 600 is installed inside the main body 10 and measures the weight of the filter accommodated in the filter carrier 300. The weighing unit 600 is located on the same plane as the filter silo 100 in the weighing space 11 to minimize the movement radius of the transfer unit 400 that transfers the filter carrier 300 from the filter silo 100. You can. That is, the weighing unit 600 may be located on the same plane as the filter silo 100, and the transfer unit 400 may be located on a plane spaced apart at a certain interval.

Meanwhile, the temperature and humidity control unit 700 is located at the bottom of the main body 10 and serves to keep the temperature and humidity of the weighing space 11 inside the main body 10 constant. The temperature and humidity control unit 700 is located at the lower end of the weighing unit 600 and maintains the temperature and humidity of the weighing space 11. The temperature and humidity control unit 700 can adjust the temperature and humidity to the desired level according to the temperature and humidity values input by the user.

FIG. 3 is an enlarged perspective view showing the filter silo and magazine unit of the automatic fine dust weighing device of FIG. 1 separately from the front, and FIG. 4 is an enlarged perspective view showing the filter silo and magazine unit of the automatic fine dust weighing device of FIG. 1 separately from the rear. am.

Referring to Figures 3 and 4, the filter silo 100 includes a frame 120 fixed to the main body 10, a partition wall 130 dividing the empty space inside the frame 120, and the frame 120. and a slot portion 140 formed between the partition wall 130. The frame 120 has a rectangular box shape with open front and rear sides, forming an empty space penetrated inside, and the partition wall 130 divides the inside of the frame 120 into spaces of a certain size to form a plurality of slot portions 140. forms. The filter silo 100, in particular, includes a plurality of slot parts 140, and a magazine unit 200 containing a filter is inserted into each slot part 140. With this structure, the filter silo 100 can accommodate a plurality of magazine units 200 in each independent slot portion 140.

The magazine unit 200 is inserted into the open front of the filter silo 100, and the inner door 150 is located at the rear to maintain the closed state. The magazine unit 200 includes a protruding pressing portion 210 whose area in contact with the inner door portion 150 protrudes into a curved surface. As shown in FIG. 4, when the magazine unit 200 is completely inserted into the slot portion 140, the magazine unit 200 automatically opens the rear of the filter silo 100 by pressing the inner door portion 150 through the protruding pressing portion 210. Accordingly, the internal space of the magazine unit 200 is exposed as the weighing space 11. That is, the inner door 150 has a structure that can be opened and closed depending on whether the magazine unit 200 is inserted or not. The filter silo (100) can always block the weighing space (11) side and the outside, preventing outside air from flowing into the weighing space (11) and making it easy to keep the temperature and humidity of the weighing space (11) constant. do.

Additionally, the filter silo 100 includes a recognition unit 170 that can recognize whether the slot unit 140 is open or closed. A plurality of recognition units 170 are arranged on the upper and lower surfaces of the frame 120 to correspond to each inner door unit 150. The recognition unit 170 may be physically recognized, such as a limit switch that is recognized by being pressed when the inner door unit 150 is closed. Alternatively, the recognition unit 170 may be formed as a proximity sensor that recognizes the position of the inner door unit 150 by emitting electromagnetic waves without physical contact. The recognition unit 170 is not limited to a switch or a proximity sensor, and can be modified in various ways as long as it can recognize whether the inner door unit 150 is opened or closed.

The magazine unit 200 is detachable from the filter silo 100 and is a storage box that accommodates a plurality of filter carriers 300, and functions to group the plurality of filter carriers 300 and insert them into the filter silo 100. The magazine unit 200 is formed in the shape of a square box with one side open, and the filter carrier 300 is inserted into the open side. A guide bar 220 is formed on the inner surface of the magazine unit 200 to guide the insertion direction of the filter carrier 300. A pair of guide bars 220 is formed on the same plane on the inner surfaces of both ends of the magazine unit 200, and a plurality of pairs are arranged in the vertical direction at a certain distance apart. The guide bar 220 may have a locking protrusion 221 at one open end that prevents the filter carrier 300 from leaving, forming a step and protruding. The locking protrusion 221 can function as a stopper by preventing the filter carrier 300 from falling out even when the magazine unit 200 is tilted.

In addition, one side of the magazine unit 200 is formed with a transparent window 230, so that it is possible to easily check with the naked eye whether or not the filter carrier 300 is inserted into the magazine unit 200. A handle may also be formed on the transparent window 230 to allow the user to move the magazine unit 200 by hand. The transparent window 230 is formed with an area larger than the cross-sectional area of the slot portion 140. That is, when the magazine unit 200 is inserted into the slot portion 140, the transparent window does not penetrate the slot portion 140, but the outer edge overlaps the frame 120 and the partition wall 130 to form a transparent window of the slot portion 140. It can cover the front. Accordingly, the transparent window 230 can cover and block the gap between the magazine unit 200 and the filter silo 100. In addition, the magazine unit 200 may include a protruding pressing portion 210 whose upper and lower end surfaces of the side inserted into the filter silo 100 are inclined and protrude. When the protruding pressing part 210 is completely inserted into the filter silo 100, it can pressurize and open the inner door part 150 that was closed on the back of the filter silo 100. The operation process of these will be described in more detail later. Explain.

Meanwhile, a pair of indicator lights 111 and 112 are located at the top or bottom of each slot portion 140, and the indicator lights 111 and 112 indicate the constant weight indicator 111 and the weighing process. It includes a weighing indicator light 112 that indicates. When the magazine unit 200 is inserted into the slot portion 140, it undergoes a constant weight process under constant temperature and humidity conditions for 24 hours. At this time, the constant weight indicator light 111 can display the progress of the constant weight process with colored light to intuitively provide the progress to the user. In addition, the weighing indicator light 112 displays the progress of the weighing process of the filter that has undergone the constant weight process with a colored light different from the constant weight indicator light 111, so that the user can intuitively understand the progress. At this time, the constant weight indicator light 111 and the weighing indicator light 112 display the progress of the magazine unit 200 and display information about a plurality of filters inserted into one magazine unit 200 at once.

Furthermore, within the magazine unit 200, a plurality of filter carriers 300 are accommodated at regular intervals in the vertical direction. The filter carrier 300 has a unique identification display portion 320 located on the side, and when inserted into the magazine unit 200, the identification display portion 320 may be exposed to one open side. That is, as the magazine unit 200 is inserted into the filter silo 100 and the inner door part 150 is opened, the identification display part 320 of the filter carrier 300 is exposed to the weighing space 11. At this time, the holding unit 500 can recognize the identification display unit 320 to distinguish the filters accommodated in each filter carrier 300 and convert them into data. These recognition structures will be described in more detail later.

Figure 5 is a perspective view showing the operating structure of the inner door part of Figure 4.

Referring to Figures 5 and 4, a plurality of inner door parts 150 are coupled to the rear of the filter silo 100 and function to open and close the rear of each slot part 140. The inner door part 150 includes a door 151 that is hinged to the frame 120 and opens and closes the rear of the slot part 140, and an opening protrusion 152 that protrudes from the door 151 into the slot part 140. Includes. The opening protrusion 152 protrudes vertically from the flat door 151 in the direction in which it is inserted into the slot portion 140 when the door 151 is closed. These open protrusions 152 protrude to form a horizontal surface, and a contact roller 153 is coupled to the bottom of the horizontal surface. The contact roller 153 may be formed in a cylindrical shape, but the shape is not limited to this, and can be modified into various shapes as long as the pressing force of the protruding pressing part 210 can be transmitted to the inner door part 150. The contact roller 153 may be axially coupled to the bottom of a horizontal surface or may be formed as one piece. The contact roller 153 is a member in direct contact with the protruding pressing portion 210, and may be formed of a material with appropriate elastic force, or may be formed by coating the surface with a material such as silicon or rubber. The contact roller 153 is pressed by the protruding pressing portion 210 and rotates about the rotation axis 161 to open the door 151. At this time, an elastic member is formed on the rotation axis 161 to apply an elastic force to automatically close the door 151. The elastic member elastically couples the frame 120 and the inner door 150 and functions to automatically close the inner door 150.

As described above, the inner door portion 150 may be opened by being pressed by the protruding pressing portion 210 of the magazine unit 200 inserted into the slot portion 140. At this time, the protruding pressing part 210 is positioned to overlap the contact roller 153 of the inner door part 150 and pushes the contact roller 153 to open the door 151. The protruding pressing portion 210 has a curved surface that contacts the contact roller 153. The protruding pressing portion 210 pushes the contact roller 153 along a curved surface, and the contact roller 153 moves along this curved surface to smoothly open and close the door 151. That is, the contact roller 153 and the protruding pressing part 210 of the present invention enable the inner door part 150 to be opened and closed automatically and smoothly.

Figure 6 is a perspective view showing the transfer unit of the automatic fine dust weighing device of Figure 1, and Figure 7 is a perspective view showing the gripping unit and filter carrier of the automatic fine dust weighing device of Figure 1.

Referring to FIG. 6, the transfer unit 400 includes the gripping unit 500 as described above, and the gripping unit 500 can be freely moved along three axes. At this time, the three axes include a fixed axis 410, a first moving axis 430, and a second moving axis 430. As described above, the fixed shaft 410 is fixedly installed on the main body 10, the first moving shaft 420 moves along the longitudinal direction of the fixed shaft 410, and the second moving shaft 430 is 1 It moves along the longitudinal direction of the moving axis 420, and the gripping unit 500 can move along the longitudinal direction of the second moving axis 430.

Referring to FIG. 7, the gripping unit 500 functions to grip and transport the filter carrier 300. The gripping unit 500 includes a housing 530 coupled to be movable in the vertical direction along the longitudinal direction of the second moving axis 430, a fork 510 extending in a pincer shape from one side of the housing 530, and It includes a ground protrusion 520 protruding from the upper surface of the fork 510. Furthermore, the gripping unit 500 includes an access sensor 540 and an identification unit 550 accommodated in the housing 530.

The housing 530 accommodates the access sensor 540 on one side adjacent to the fork 510. The access sensor 540 functions to recognize whether the filter carrier 300 is held by the fork 510. In addition, the identification unit 550 is accommodated inside the housing 530 like the access sensor 540, and is located at the top of the access sensor 540 and has an identification display unit 320 engraved on one side of the filter carrier 300. It has a recognition function. The identification display unit 320 is located on one side of the plurality of filter carriers 300 and includes unique information. For example, the identification display unit 320 may be in the form of a code that can easily store and recognize information, such as a barcode or QR code. In this case, the identification unit 550 may be formed as a scanner capable of scanning codes. Furthermore, when the identification display unit 320 is formed as an image of a number or a picture, the identification unit 550 may be formed as a camera capable of image recognition. However, it is not limited to this, and the identification display unit 320 and the identification unit 550 can be transformed into various forms as long as they can recognize each other's unique information.

The fork 510 extends from one side of the housing 530 and functions to physically grasp the filter carrier 300. The fork 510 is formed in the shape of pincers with a flat upper surface, so that the filter carrier is seated on the upper surface. The fork 510 has ground protrusions 520 that protrude from the upper surfaces of a pair of tongs, respectively. The ground protrusion 520 comes into contact with the filter (a) accommodated in the filter carrier 300 and removes static electricity. The grounding protrusion 520 can be transformed into any shape as long as it can be grounded with the filter (a), such as a cylindrical shape with a certain height, a prismatic shape, or a thin wire. The ground protrusion 520 can reduce the weight error rate that may occur due to static electricity during the weighing process by removing static electricity from the filter (a) before weighing the filter (a).

Meanwhile, the filter carrier 300 functions to accommodate the filter (a) and includes a filter seating portion 310 on which the filter (a) is seated and an identification display portion 320 with unique information engraved on it. In other words, the filter carrier 300 accommodates the filter (a) and at the same time assigns a unique identification number to the filter (a), allowing a plurality of filters (a) to be easily converted into data and managed. The filter carrier 300 moves from the upper part of the measuring plate 610 of the weighing unit 600 to the lower part during the weighing process, and has a through hole 311 in the center to seat the filter (a) on the measuring plate 610. is formed The through hole 311 is formed with a diameter smaller than that of the filter (a) and larger than that of the measuring plate (610). A step is formed along the circumference of the through hole 311, so that the filter (a) can be seated in the portion where the step is formed. In addition, the through hole 311 has a cut portion 312 formed on the side where a portion of the filter carrier 300 is cut. The cut portion 312 is located overlapping with the open side of the fork 510. This structure can allow the fork 510 and the filter carrier 300 to pass through the pillar at the bottom of the measuring plate 610 in the process between FIGS. 14 and 15.

Figure 8 is a perspective view showing the weighing unit of the automatic fine dust weighing device of Figure 1.

Referring to FIG. 8, the weighing unit 600 is a weight measuring device for weighing the weight of a filter. The filter is placed on the measuring plate 610 and the weight of the filter is measured using a microbalance 620. At this time, the measuring plate 610 is located inside the transparent cylinder 630 and measures the weight of the filter while disconnecting the space for measuring the weight of the filter and the weighing space 11. The transparent cylinder 630 includes an opening 631 with one side open, and a filter can be inserted through the opening 631. In particular, the transparent cylinder 630 is formed to be rotatable, so that when the filter is seated on the measuring plate 610, it can rotate to close the opening 631.

Figure 9 is a flowchart explaining a method of measuring the weight of fine dust in the automatic fine dust weighing device of Figure 1.

Referring to Figure 9, the method of measuring the weight of fine dust using the automatic fine dust weighing device 1 according to the present invention is as follows. First, before collecting fine dust using a filter, the weight of the filter alone is measured, then the weight of the filter containing fine dust is measured, and the weight of the filter before and after collecting fine dust is measured to determine the weight of the filter. Measure the weight. In other words, the method of measuring the weight of fine dust can be roughly divided into two steps, and the process of measuring the weight of the filter alone and the process of measuring the weight of the filter that collects the fine dust are arranged sequentially.

First, the method of measuring the weight of the filter alone is as follows. The magazine unit 200 equipped with the filter carrier 300 is mounted on the filter silo 100. Thereafter, the identification display unit 320 of the filter carrier 300 is scanned through the identification unit 550 of the grip unit 500 to convert each filter into data. Afterwards, the filter goes through a constant weight process in which it is exposed to constant temperature and humidity conditions for 24 hours. After completing the constant weight process, the filter is transferred to the weighing unit (600), its weight is measured, and it is returned to the magazine unit (200). Through this process, users can precisely measure the weight of pure filters alone. Afterwards, the user removes the magazine unit 200 from the filter silo 100 to collect fine dust in the space where the fine dust concentration is to be measured, and inserts the magazine unit 200 containing the filter containing the fine dust back between the filters. .

The method of measuring the weight of a filter containing fine dust is the same as the previous method of measuring the weight of only the filter. First, after going through a constant weighing process for 24 hours, the fine weight is weighed through the weighing unit 600. As a result, the weight of fine dust can be determined through the difference between the filter weight after collecting fine dust and the weight of the filter before collection.

Figures 10 to 16 are diagrams schematically showing the operation of the automatic fine dust weighing device of Figure 1.

Referring to FIG. 10, when the magazine unit 200 accommodating a plurality of filter carriers 300 on which filters are seated is mounted on the filter silo 100, the inner door 150 is automatically opened. At this time, the filter accommodated inside the magazine unit 200 is exposed to the weighing space 11, is exposed to constant temperature and humidity conditions of the weighing space 11, and undergoes a constant weight process for 24 hours.

Referring to FIG. 11, in order to recognize information on the inserted filter, the gripping unit 500 moves to a position corresponding to the corresponding filter carrier 300 and identifies the exposed identification display portion 320 using the identification unit 550. Information on each filter carrier 300 is recognized through . That is, the information on the filter carrier 300 is read and stored through the identification unit 550 to manage the insertion time and status of the corresponding filter carrier 300. The gripping unit 500 can calculate the insertion time of the filter carrier 300 and the exposure time of the weighing space 11. Accordingly, when 24 hours have elapsed after the magazine unit 200 is inserted into the filter silo 100, the constant mass indicator lamp 111 indicates that the constant mass process has been completed. Alternatively, you can check the progress of each filter carrier 300 as well as the progress of the magazine unit 200 as a whole through a separate display. The display can be formed as a touch display, and can display the constant weight conditions, time or weighing process, results, etc. of each filter carrier in an easily viewable arrangement.

Referring to FIG. 12, the gripping unit 500 pulls out the filter carrier 300 that has completed the constant weight process from the magazine unit 200. At this time, the holding unit 500 enters the bottom of the filter carrier 300, rises, and lifts the filter carrier 300 from bottom to top to take it out. In particular, while the holding unit 500 lifts the filter carrier 300, the ground protrusion 520 of the holding unit 500 comes into contact with the filter (a) and removes static electricity from the filter (a).

Referring to FIG. 13, the filter (a) and filter carrier 300 from which static electricity has been removed are transferred to the weighing unit 600. The holding unit 500 transfers the filter (a) and the filter carrier 300 to a height corresponding to the top of the measuring plate 610 of the weighing unit 600.

Referring to FIG. 14, the gripping unit 500 is inserted through the opening 631 into the transparent cylinder 630 at a position overlapping the top of the measuring plate 610. At this time, the measuring plate 610 and the through hole 311 of the filter carrier 300 completely overlap each other.

Referring to Figure 15, the gripping unit 500 descends from the top to the bottom of the measuring plate 610, and at this time, the filter carrier 300 and the fork 510 penetrate the measuring plate 610, and the filter ( Only a) is seated on the upper surface of the measuring plate 610.

Referring to FIG. 16, the gripping unit 500 can come out through the opening 631 with the filter (a) seated on the measuring plate 610, and at this time, the cutout portion of the filter carrier 300 ( 312) and one open side of the fork 510 passes through a pillar supporting the measuring plate 610. After the gripping unit 500 exits the transparent cylinder 630, the transparent cylinder 630 rotates to close the opening 631. In this state, the microscale 620 measures the weight of the filter mounted on the measuring plate 610.

Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. You will be able to understand it. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

1: Fine dust automatic weighing device
10: Main body 11: Weighing space
12: Silo door 100: Filter silo
111: constant weight indicator light 112: weighing indicator light
120: frame 130: bulkhead
140: slot part 150: inner door part
151: Door 152: Opening protrusion
153: Contact roller 160: Elastic member
161: rotation axis 170: recognition unit
200: magazine unit 210: protruding pressurizing part
220: Guide bar 221: Locking jaw
230: transparent window 300: filter carrier
310: Filter seating portion 311: Through hole
312: incision 320: identification display part
400: transfer unit 410: fixed axis
420: first moving axis 430: second moving axis
500: gripping unit 510: fork
520: Ground protrusion 530: Housing
540: Access sensor 550: Identification unit
600: Weighing unit 610: Measuring plate
620: Microbalance 630: Transparent cylinder
631: Opening 700: Temperature and humidity control unit
a: filter

Claims (10)

A main body formed with a weighing space blocked from the outside;
A filter carrier on which a filter for measuring fine dust is placed;
a magazine unit into which a plurality of the filter carriers are removably inserted;
a filter silo formed in the main body, into which the plurality of magazine units are inserted to expose the filter carrier to the weighing space;
A weighing unit installed inside the weighing space to measure the weight of the filter;
A transfer unit installed inside the weighing space to transfer the filter carrier to the magazine unit and the weighing unit;
a gripping unit installed on the transfer unit to identify the filter carrier; and
It includes a temperature and humidity control unit that maintains constant temperature and humidity inside the weighing space,
The filter silo is:
It includes a frame installed in the main body, and a partition dividing the inside of the frame to form a slot into which the magazine unit is inserted,
It further includes an internal door part installed for each slot part inside the filter silo located inside the weighing space to open and close the slot part,
The inner door portion includes a door hinged to the frame and an opening protrusion protruding from the door into the slot portion,
An automatic fine dust weighing device in which the door is opened by pushing the opening protrusion when the magazine unit is inserted into the slot. delete According to clause 1,
An automatic fine dust weighing device further comprising a silo door portion installed on the main body to cover the filter silo and seal the interior. delete delete According to clause 1,
The magazine unit is,
An automatic fine dust weighing device further comprising a protruding pressing portion whose surface in contact with the open protrusion protrudes into a curved surface. According to clause 6,
The open protrusion is,
An automatic fine dust weighing device further comprising a contact roller on a surface in contact with the protruding pressing portion. According to clause 1,
An automatic fine dust weighing device further comprising an elastic member that elastically couples between the frame and the inner door portion to close the inner door portion, and a recognition portion installed on the frame to recognize an open state of the inner door portion. According to clause 1,
The filter carrier is,
A filter seating portion on which the filter is seated on the upper surface, a through hole in the center through which the measuring plate of the weighing unit passes, and a cutout portion formed on a side of the through hole; and
An automatic fine dust weighing device comprising an identification display unit on a side of the filter seating unit where information identifying the filter is displayed and recognized by the gripping unit. According to clause 9,
The transfer unit is,
a fork inserted into the lower portion of the filter carrier to grip the filter carrier; and
An automatic fine dust weighing device further comprising a grounding protrusion that protrudes from the fork and is in contact with the filter to remove static electricity from the filter.

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