CN210474903U - Integrative equipment of laboratory test tube cleaning stoving - Google Patents
Integrative equipment of laboratory test tube cleaning stoving Download PDFInfo
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- CN210474903U CN210474903U CN201920908498.XU CN201920908498U CN210474903U CN 210474903 U CN210474903 U CN 210474903U CN 201920908498 U CN201920908498 U CN 201920908498U CN 210474903 U CN210474903 U CN 210474903U
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- test tube
- sliding
- placing rack
- tube placing
- cleaning
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Abstract
The utility model discloses an integrative equipment of laboratory test tube cleaning stoving belongs to laboratory instrument equipment field. The cleaning and drying integrated equipment comprises a test tube placing frame, a drying mechanism, a cleaning mechanism and a sliding mechanism, wherein the sliding mechanism can realize that test tubes on the test tube placing frame move back and forth between the drying mechanism and the cleaning mechanism; the drying mechanism and the cleaning mechanism are arranged in the box body, the sliding mechanism comprises a sliding block capable of sliding left and right and an electric push rod capable of adjusting the height of the test tube placing rack, the test tube placing rack is used for fixing test tubes, and the test tube placing rack is connected with the sliding block through the electric push rod. The utility model discloses establish stoving mechanism and wiper mechanism as an organic whole, through the adjustment mechanism who has slider, screw rod and electric putter, can drive the removal about the test tube on the test tube rack and reciprocate to can carry out efficient washing and drying process to the test tube.
Description
Technical Field
The utility model relates to an experimental apparatus equipment field specifically is a laboratory test tube cleaning integrative equipment of drying.
Background
Test tubes are one of the most common glass instruments in laboratories, and most experiments require test tubes. In the using process of the test tube, the test tube is often cleaned and dried, so that the influence of dirt, moisture or other solvents on the test tube on the experimental result is avoided.
However, the conventional tube cleaning device does not have a drying function, so that the tube cleaning device needs to be taken out of the device and placed in a drying device for drying treatment after cleaning, and the whole operation process is troublesome and inconvenient. Although there is also the test tube cleaning drying equipment of integral type among the prior art, chinese patent CN207563376U for example discloses a test tube cleaning drying device, through increasing the stoving function, can realize the streamlined operation of washing stoving, but the device need take out the test tube after wasing at every turn, then puts into the drying zone and dries, need take and place the test tube many times promptly, still inconvenient, the efficiency of washing stoving is not good enough. Therefore, further improvement of the cleaning and drying apparatus for test tubes is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an integrative equipment of laboratory test tube cleaning stoving to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a laboratory test tube cleaning and drying integrated device comprises a box body, a test tube placing rack, a drying mechanism, a cleaning mechanism and a sliding mechanism, wherein the sliding mechanism can realize that a test tube on the test tube placing rack moves back and forth between the drying mechanism and the cleaning mechanism; the drying mechanism and the cleaning mechanism are arranged in the box body, the sliding mechanism comprises a sliding block capable of sliding left and right and an electric push rod capable of adjusting the height of the test tube placing rack, the test tube placing rack is used for fixing test tubes, and the test tube placing rack is connected with the sliding block through the electric push rod.
As a further proposal of the utility model, the sliding mechanism further comprises a screw rod, a sliding rod and a first motor, the screw rod is arranged between the two groups of mounting plates and is rotationally connected with the mounting plates, and the mounting plates are symmetrically arranged on the upper inner wall of the box body; the screw rod is in threaded connection with the sliding block and is connected with the first motor; the sliding rods are symmetrically arranged on two sides of the screw rod, are in sliding connection with the sliding block and are fixedly connected with the mounting plate.
As the utility model discloses scheme further again, slider bottom be connected through connecting block and electric putter, electric putter be connected with test tube rack, test tube rack on be equipped with the clamping mechanism that a plurality of groups are used for the fixed test tube of centre gripping.
As the utility model discloses further scheme again, the slide bar on the symmetry be equipped with two sets of first stoppers, box side inner wall on the symmetry be equipped with two sets of second stoppers.
As the utility model discloses scheme further still, wiper mechanism include driver's room, second motor and a plurality of group and fix the corresponding nylon brush of test tube on the test tube rack, the driver's room setting in the bottom of box, the top of driver's room is passed to the bottom of nylon brush to link to each other with driven bevel gear, driven bevel gear mesh with drive bevel gear mutually, drive bevel gear be connected with the pivot, the pivot is connected with the second motor.
As a further proposal of the utility model, the top of the driving chamber is arranged obliquely, a water outlet is arranged beside the driving chamber, and the water outlet is arranged at the bottom of the box body; the nylon brush is of a hollow structure and is provided with a plurality of groups of first through holes, and the bottom end of the nylon brush is provided with a water inlet.
As a further proposal of the utility model, the drying mechanism comprises an air heater and a plurality of groups of air outlet pipes corresponding to the test tubes fixed on the test tube placing rack, and the air outlet pipes are arranged on the communicating pipes and communicated with the air heater through the communicating pipes; the air outlet pipe is of a hollow structure, each surface of the air outlet pipe is provided with a second through hole, and the communicating pipe is arranged at the bottom of the box body.
As a further scheme of the utility model, the clamping mechanism comprises a rubber groove and two sets of symmetrically arranged mounting posts and arc-shaped clamping blocks, the mounting posts and the rubber groove are both arranged at the bottom of the test tube placing rack, and the arc-shaped clamping blocks are connected with the mounting posts through springs; the arc-shaped clamping block is also connected with a movable rod, and the movable rod penetrates through the mounting column and is in sliding connection with the mounting column.
As a further proposal of the utility model, the movable rod is of a T-shaped structure, the arc-shaped clamping block is provided with an arc-shaped rubber pad
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model integrates the drying mechanism and the cleaning mechanism, and can drive the test tube on the test tube placing rack to move left and right and move up and down through the adjusting mechanism with the slide block, the screw rod and the electric push rod, thereby realizing that the test tube can move back and forth in the drying mechanism and the cleaning mechanism; in addition, through set up first stopper 1 and second stopper at the slide bar and on the box inner wall, can play spacing, the effect of location to can guarantee that nylon brush or air-out pipe can stretch into the test tube smoothly and wash or dry the operation, and can avoid nylon brush or air-out pipe to pierce through the bottom of test tube.
(2) The utility model discloses still through set up the clamping mechanism who has movable rod and spring on test tube rack, can improve the test tube and remove the stability when perhaps reciprocating about following test tube rack, and the dismouting of the test tube of still being convenient for.
Drawings
Fig. 1 is a schematic structural diagram of a laboratory test tube cleaning and drying integrated device.
Fig. 2 is a schematic structural view of a nylon brush.
Fig. 3 is a schematic structural view of the air outlet pipe.
Fig. 4 is a partially enlarged view of the clamping mechanism a.
In the figure: the test tube rack comprises a box body 1, a test tube placing frame 2, an electric push rod 3, a connecting block 4, a sliding block 5, a screw rod 6, a sliding rod 7, a first motor 8, a mounting plate 9, a first limiting block 10, a second limiting block 11, a driving chamber 12, a nylon brush 13, a second motor 14, a rotating shaft 15, a driving bevel gear 16, a driven bevel gear 17, a water outlet 18, a partition plate 19, an air outlet pipe 20, a communicating pipe 21, a hot air blower 22, a first through hole 23, a second through hole 24, a mounting column 25, a rubber groove 26, an arc-shaped clamping block 27, an arc-shaped rubber pad 28, a movable rod 29 and a spring 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "fixed," "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed, and the specific connection may be by welding, riveting, bolting, and the like. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate. In addition, the terms of orientation of the embodiments such as "upper", "lower", "left", "right", "bottom", "top", "side", etc. are all directions with reference to the drawings.
Example 1
Referring to the attached figures 1-3, the laboratory test tube cleaning and drying integrated equipment comprises a box body 1, a test tube placing frame 2, a drying mechanism, a cleaning mechanism and a sliding mechanism; the drying mechanism and the cleaning mechanism are both arranged in the box body 1, and the sliding mechanism is used for realizing the back-and-forth movement of the test tubes on the test tube placing rack 2 between the drying mechanism and the cleaning mechanism;
specifically, the sliding mechanism comprises a screw rod 6, a sliding rod 7, a first motor 8, a sliding block 5 capable of sliding left and right, and an electric push rod 3 capable of adjusting the height of the test tube placing rack 2, wherein the test tube placing rack 2 is used for fixing a test tube; the screw rods 6 are arranged between the two groups of mounting plates 9 and are rotationally connected with the mounting plates 9, and the mounting plates 9 are symmetrically arranged on the upper inner wall of the box body 1; the screw rod 6 is in threaded connection with the sliding block 5 and is connected with the output end of the first motor 8; the sliding rods 7 are symmetrically arranged on two sides of the screw rod 6, are in sliding connection with the sliding block 5 and are fixedly connected with the mounting plate 9, and can convert the rotating motion of the sliding block 5 into sliding motion. Wherein, first motor 8 is just reversing motor, through driving first motor 8 just reversing, can drive screw rod 6 rotatory, under the cooperation of slide bar 7, can drive slider 5 and remove about along the direction of screw rod 6 to can realize test tube on test tube rack 2 round trip movement between stoving mechanism and wiper mechanism.
In addition, foretell 5 bottoms of slider are connected with electric putter 3 through connecting block 4, and foretell electric putter 3 is connected with test tube rack 2, is equipped with the clamping mechanism that a plurality of groups are used for the fixed test tube of centre gripping on foretell test tube rack 2. Stretch out and draw back through drive electric putter 3, can drive test tube rack 2 and reciprocate to can drive test tube on the test tube rack 2 and get into wiper mechanism and wash or get into stoving mechanism and dry.
Specifically, the cleaning mechanism comprises a driving chamber 12, a second motor 14 and a plurality of groups of nylon brushes 13 corresponding to test tubes fixed on the test tube placing frame 2, the driving chamber 12 is arranged at the bottom of the box body 1, the bottom ends of the nylon brushes 13 penetrate through the top of the driving chamber 12, are rotatably connected with the driving chamber 12 and are connected with driven bevel gears 17, the driven bevel gears 17 are meshed with driving bevel gears 16, the driving bevel gears 16 are connected with rotating shafts 15, and the rotating shafts 15 are connected with output ends of the second motor 14.
In addition, the nylon brush 13 is hollow and provided with a plurality of groups of first through holes 23, and the bottom end of the nylon brush is provided with a water inlet and communicated with a water pipe through a rotary joint, and the water pipe can be communicated with a water source through a water pump (not shown in the figure); the top of the driving chamber 12 is arranged obliquely, a water outlet 18 is arranged beside the driving chamber, and the water outlet 18 is arranged at the bottom of the box body 1, so that dirty water generated during cleaning can be discharged in time. Through drive second motor 14, can drive nylon brush 13 and rotate to and can pass through the water pump and spout water toward the test tube in the first through-hole 23 on the nylon brush 13, thereby can carry out high-efficient cleaning operation to the test tube inner wall.
In addition, the drying mechanism comprises a hot air blower 22 and a plurality of groups of air outlet pipes 20 corresponding to the test tubes fixed on the test tube placing rack 2, wherein the air outlet pipes 20 are arranged on a communicating pipe 21 and are communicated with the hot air blower 22 through the communicating pipe 21 and the hot air pipes; the air outlet pipe 20 is of a hollow structure, and each surface of the air outlet pipe is provided with a second through hole 24; the communication pipe 21 is mounted on the bottom of the tank 1 by a support. Can go out the interior drum of tuber pipe 20 through starting hot-blast air heater 22 through communicating pipe 21 and advance hot-blastly, hot-blastly alright follow the second through-hole 24 drum on the tuber pipe 20 and advance in the test tube to can carry out high-efficient stoving operation to the test tube.
In addition, in order to guarantee that the test tube can aim at nylon brush 13 on the wiper mechanism and the play tuber pipe 20 on the stoving mechanism to and ensure that nylon brush 13 can not puncture the test tube bottom with play tuber pipe 20, the symmetry is equipped with two sets of first stoppers 10 on foretell slide bar 7, can remove about to test tube rack 2 spacing, the symmetry is equipped with two sets of second stoppers 11 on the 1 side inner wall of foretell box, can carry out the spacing that reciprocates to test tube rack 2.
Specifically, when the sliding block 5 slides to the first limiting block 10 on the left or right of the sliding rod 7, the center line of the test tube on the test tube placing rack 2 is just coincided with the corresponding nylon brush 13 or air outlet pipe 20, so that the nylon brush 13 or the air outlet pipe 20 can be ensured to extend into the test tube for cleaning or drying; in addition, move down to the second stopper 11 department on the left side or the right when test tube rack 2, nylon brush 13 or play tuber pipe 20 can stretch into the inside of test tube, and just contact with the bottom of test tube mutually to can avoid the test tube to be damaged by nylon brush 13 or play tuber pipe 20.
In addition, the box body 1 is provided with a door, so that the test tube can be conveniently taken or placed. In addition, the first motor 8, the second motor 14, the electric push rod 3 and the hot air blower 22 are electrical devices commonly found in the prior art, and the specific model and the specific structure thereof are not described herein again.
Example 2
Referring to fig. 4, in order to ensure the stability of the test tube when moving left and right or up and down with the test tube placement rack 2, the embodiment is improved on the basis of embodiment 1, specifically, the clamping mechanism on the test tube placement rack 2 includes a rubber groove 26, and two sets of symmetrically arranged mounting columns 25 and arc-shaped clamping blocks 27, the mounting columns 25 and the rubber groove 26 are both mounted at the bottom of the test tube placement rack 2, the arc-shaped clamping blocks 27 are connected with the mounting columns 25 through springs 30, and the springs 30 are sleeved on movable rods 29; the arc-shaped clamping block 27 is also fixedly connected with a movable rod 29, and the movable rod 29 penetrates through the mounting column 25 and is in sliding connection with the mounting column 25; the movable rod 29 is of a T-shaped structure and can play a limiting role, and the arc-shaped clamping block 27 is further provided with an arc-shaped rubber pad 28, so that the test tube can be prevented from being damaged by clamping.
Specifically, when a test tube needs to be mounted on the test tube placing frame 2, the movable rod 29 is pulled outwards, the bottom of the test tube is inserted into the rubber groove 26, then the movable rod 29 is slightly released, and under the action of the resilience force of the spring 30, the arc-shaped rubber pads 28 on the two symmetrical arc-shaped clamping blocks 27 can clamp the test tube; when the test tube needs to be detached from the test tube placing rack 2, the movable rod 29 is pulled outwards, so that the test tube can be easily pulled out from the rubber groove 26.
The utility model provides a washing and drying integrated equipment's application method: firstly, a test tube is arranged at the bottom of a test tube placing frame 2 through a clamping mechanism, then a first motor 8 is driven to drive a sliding block 5 to slide to a first limiting block 10 on the left side, then an electric push rod 3 is driven to drive the test tube placing frame 2 to move downwards to a second limiting block 11 on the left side, a nylon brush 13 can extend into the test tube, then a second motor 14 is driven to drive the nylon brush 13 to rotate, and water is sent into the nylon brush 13 through a water pump, so that the inner wall of the test tube can be efficiently cleaned; after the washing, drive electric putter 3 can drive test tube rack 2 and rise, break away from nylon brush 13 and exceed baffle 19's top completely until the test tube, then drive first motor 8 and drive slider 5 and move to the right behind first stopper 10 on the right, drive electric putter 3 again drives test tube rack 2 and moves down to the second stopper 11 department on the right, go out in the tuber pipe 20 alright stretch into the test tube, at this moment, can be toward the intraductal drum of test tube hot-blast through starting hot-blast fan 22, thereby can carry out high-efficient drying process to the test tube.
To sum up, the utility model integrates the drying mechanism and the cleaning mechanism, and can drive the test tube on the test tube placing rack 2 to move left and right and move up and down through the adjusting mechanism with the slide block 5, the screw rod 6 and the electric push rod 3, thereby realizing that the test tube can move back and forth in the drying mechanism and the cleaning mechanism; in addition, through set up first stopper 10 and second stopper 11 at slide bar 7 and on 1 inner wall of box, can play spacing, the effect of location to can guarantee that nylon brush 13 or play tuber pipe 20 can stretch into smoothly and wash or dry the operation in the test tube, and can avoid nylon brush 13 or play tuber pipe 20 to pierce through the bottom of test tube. The utility model discloses still through set up the clamping mechanism who has movable rod 29 and spring 30 on test tube rack 2, can improve the test tube and remove the stability when perhaps reciprocating about following test tube rack 2, and the dismouting test tube of still being convenient for.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (1)
1. A laboratory test tube cleaning and drying integrated device comprises a box body (1), a test tube placing rack (2), a drying mechanism and a cleaning mechanism, wherein the drying mechanism and the cleaning mechanism are both arranged in the box body (1), and the laboratory test tube cleaning and drying integrated device is characterized by further comprising a sliding mechanism which can realize that a test tube on the test tube placing rack (2) moves back and forth between the drying mechanism and the cleaning mechanism; the sliding mechanism comprises a sliding block (5) capable of sliding left and right and an electric push rod (3) capable of adjusting the height of the test tube placing rack (2), the test tube placing rack (2) is used for fixing a test tube and is connected with the sliding block (5) through the electric push rod (3); the sliding mechanism further comprises a screw (6), a sliding rod (7) and a first motor (8), the screw (6) is arranged between the two groups of mounting plates (9) and is rotatably connected with the mounting plates (9), and the mounting plates (9) are symmetrically mounted on the upper inner wall of the box body (1); the screw rod (6) is in threaded connection with the sliding block (5) and is connected with the first motor (8); the sliding rods (7) are symmetrically arranged on two sides of the screw rod (6), are in sliding connection with the sliding block (5) and are fixedly connected with the mounting plate (9); the bottom of the sliding block (5) is connected with an electric push rod (3) through a connecting block (4), the electric push rod (3) is connected with a test tube placing rack (2), and a plurality of groups of clamping mechanisms for clamping and fixing test tubes are arranged on the test tube placing rack (2); two groups of first limiting blocks (10) are symmetrically arranged on the sliding rod (7), and two groups of second limiting blocks (11) are symmetrically arranged on the inner wall of the box body (1); the cleaning mechanism comprises a driving chamber (12), a second motor (14) and a plurality of groups of nylon brushes (13) corresponding to test tubes fixed on the test tube placing rack (2), the driving chamber (12) is arranged at the bottom of the box body (1), the bottom ends of the nylon brushes (13) penetrate through the top of the driving chamber (12) and are connected with driven bevel gears (17), the driven bevel gears (17) are meshed with driving bevel gears (16), the driving bevel gears (16) are connected with rotating shafts (15), and the rotating shafts (15) are connected with the second motor (14); the top of the driving chamber (12) is obliquely arranged, a water outlet (18) is arranged beside the driving chamber, and the water outlet (18) is arranged at the bottom of the box body (1); the nylon brush (13) is of a hollow structure and is provided with a plurality of groups of first through holes (23), and the bottom end of the nylon brush is provided with a water inlet; the drying mechanism comprises a hot air blower (22) and a plurality of groups of air outlet pipes (20) corresponding to test tubes fixed on the test tube placing rack (2), wherein the air outlet pipes (20) are arranged on a communicating pipe (21) and are communicated with the hot air blower (22) through the communicating pipe (21); the air outlet pipe (20) is of a hollow structure, each surface of the air outlet pipe is provided with a second through hole (24), and the communicating pipe (21) is arranged at the bottom of the box body (1); the clamping mechanism comprises a rubber groove (26), two groups of mounting columns (25) and arc-shaped clamping blocks (27) which are symmetrically arranged, the mounting columns (25) and the rubber groove (26) are both mounted at the bottom of the test tube placing rack (2), and the arc-shaped clamping blocks (27) are connected with the mounting columns (25) through springs (30); the arc-shaped clamping block (27) is also connected with a movable rod (29), and the movable rod (29) penetrates through the mounting column (25) and is in sliding connection with the mounting column (25); the movable rod (29) is of a T-shaped structure, and an arc-shaped rubber pad (28) is further arranged on the arc-shaped clamping block (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920908498.XU CN210474903U (en) | 2019-06-17 | 2019-06-17 | Integrative equipment of laboratory test tube cleaning stoving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920908498.XU CN210474903U (en) | 2019-06-17 | 2019-06-17 | Integrative equipment of laboratory test tube cleaning stoving |
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| Publication Number | Publication Date |
|---|---|
| CN210474903U true CN210474903U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920908498.XU Expired - Fee Related CN210474903U (en) | 2019-06-17 | 2019-06-17 | Integrative equipment of laboratory test tube cleaning stoving |
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| CN (1) | CN210474903U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112452987A (en) * | 2020-10-27 | 2021-03-09 | 中山市人民医院 | Test tube cleaning machine |
| CN112657976A (en) * | 2020-12-01 | 2021-04-16 | 河北化工医药职业技术学院 | Automatic scrubbing equipment of test tube of high-efficient environmental protection that chemical engineering used |
| CN112756355A (en) * | 2020-12-17 | 2021-05-07 | 江门市崖门新财富环保工业有限公司 | Test tube cleaning method |
| CN112934891A (en) * | 2021-01-27 | 2021-06-11 | 王卫国 | Belt cleaning device of detect reagent box |
| CN113857181A (en) * | 2021-09-10 | 2021-12-31 | 武玉彦 | Test tube cleaning instrument for it is biological experiments |
| CN114378045A (en) * | 2022-01-18 | 2022-04-22 | 无锡京运通科技有限公司 | Cleaning equipment for monocrystalline silicon wafers |
-
2019
- 2019-06-17 CN CN201920908498.XU patent/CN210474903U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112452987A (en) * | 2020-10-27 | 2021-03-09 | 中山市人民医院 | Test tube cleaning machine |
| CN112657976A (en) * | 2020-12-01 | 2021-04-16 | 河北化工医药职业技术学院 | Automatic scrubbing equipment of test tube of high-efficient environmental protection that chemical engineering used |
| CN112756355A (en) * | 2020-12-17 | 2021-05-07 | 江门市崖门新财富环保工业有限公司 | Test tube cleaning method |
| CN112756355B (en) * | 2020-12-17 | 2024-06-07 | 江门市崖门新财富环保工业有限公司 | Test tube cleaning method |
| CN112934891A (en) * | 2021-01-27 | 2021-06-11 | 王卫国 | Belt cleaning device of detect reagent box |
| CN113857181A (en) * | 2021-09-10 | 2021-12-31 | 武玉彦 | Test tube cleaning instrument for it is biological experiments |
| CN114378045A (en) * | 2022-01-18 | 2022-04-22 | 无锡京运通科技有限公司 | Cleaning equipment for monocrystalline silicon wafers |
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