CN113566540B

CN113566540B - Tumbler type glass test tube drying device

Info

Publication number: CN113566540B
Application number: CN202111137615.5A
Authority: CN
Inventors: 龚风琴
Original assignee: Haimencity Kahotest Citotest Labware Manufacturing Co ltd
Current assignee: Haimencity Kahotest Citotest Labware Manufacturing Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2021-11-30
Anticipated expiration: 2041-09-27
Also published as: CN113566540A

Abstract

The invention discloses a tumbler type glass test tube drying device, belonging to the field of glass test tube drying devices, by placing the test tube into the balance net cover, the balance net cover provides a certain free movement space for the test tube while surrounding the protection test tube, in the drying process, the balance mesh enclosure for bearing the test tube is in a state of continuously inclining, shaking and not falling through hot wind power, on one hand, the test tube is driven to synchronously incline and shake, the outflow and falling of water in the test tube are promoted, the drying speed of the inner wall of the test tube is accelerated, on the other hand, the test tube moves to a certain degree in the balance mesh enclosure due to the inertia effect, the contact point of the test tube and the balance mesh enclosure is changed, meanwhile, hot air enters the balance net cover to be in full-face and flowing contact with the test tube in a shaking state, and the omnibearing blind-spot-free efficient drying process of the test tube is achieved.

Description

Tumbler type glass test tube drying device

Technical Field

The invention relates to the field of glass test tube drying devices, in particular to an tumbler type glass test tube drying device.

Background

Test tubes are instruments commonly used in chemical laboratories, medical experiments, and are used as reaction vessels for small amounts of reagents.

The test tube is generally the glass test tube, is a fragile object, among the prior art, for avoiding it to produce the collision when dry, causes the breakage, generally fixes the test tube, and rethread hot-blast is to its drying.

In current drying process, generally adopt static drying to the test tube, the test tube is in fixed quiescent condition promptly, and on the one hand so, because the test tube is inside slow because of the air current flows, lead to drying efficiency lower, and on the other hand, by the unable comprehensive and hot-blast contact of fixed quiescent test tube, its surface produces dry blind spot by fixed position easily, influences test tube drying efficiency equally.

Disclosure of Invention

1. Technical problem to be solved

The present invention provides an apparatus for drying a test tube, which comprises a balance screen, a tube holder, a tube-holding frame, and a tube-holding frame The blind spot-free high-efficiency drying process.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The tumbler type glass test tube drying device comprises a drying box and a box door, wherein the box door is rotatably connected to the outer end of the drying box, a plurality of flat plates which are uniformly distributed are fixedly connected to the inner wall of the drying box from top to bottom in sequence, a plurality of air supply net rings are fixedly connected to the inner wall of the drying box, the air supply net rings correspond to the flat plates one to one, the air supply net rings are located on the upper sides of the flat plates, a plurality of branch pipes which correspond to the air supply net rings one to one are fixedly connected to the side ends of the drying box, and the branch pipes penetrate through the outer end of the drying box and are communicated with the interior of the air supply net rings;

a plurality of balance screen panels have been placed to dull and stereotyped upper end, balance screen panel includes the gravity hemisphere, the hard net section of thick bamboo of upper end fixedly connected with of gravity hemisphere, the upper end of hard net section of thick bamboo is connected with half main shell and the vice half shell of mutual symmetry, the inner wall fixedly connected with flexible net of a hard net section of thick bamboo protects the cotton with down, flexible net is located protects cotton upside down, protect the cotton on the equal fixedly connected with of upper inner wall of half main shell and vice half shell.

Furthermore, the lower end of the main half shell is fixedly connected with the upper end of the hard net barrel, and the upper end of the auxiliary half shell is rotatably connected with the upper end of the hard net barrel.

Further, the equal fixedly connected with foraminiferous dish in the upper end of main half shell and vice half shell, it is a pair of threaded connection has bolt assembly between the foraminiferous dish, bolt assembly includes screw rod and nut.

Further, the gravity hemisphere is made of heavy materials, and the hard net barrel, the main half shell and the auxiliary half shell are made of light materials.

Further, the lowermost end of the flexible net is not lower than the lowermost end of the lower protection cotton, the distance from the lowermost end of the flexible net to the lower end of the upper protection cotton is less than the length of the test tube, and the distance from the lowermost end of the flexible net to the inner top end of the upper protection cotton is greater than the length of the test tube.

Furthermore, dull and stereotyped upper surface coating is equipped with a plurality of evenly distributed's various lines of location, a plurality of evenly distributed's wind hole has been seted up on the flat board, the wind hole is located dull and stereotyped marginal zone, and is the U type distribution, the various line of location is located dull and stereotyped middle zone.

Furthermore, the upper end of the flat plate is fixedly connected with soft cloth, the soft cloth is positioned on one side of the flat plate close to the box door, and the vertical length of the soft cloth is 0.5-0.8 times of that of the balance net cover.

Further, a pair of hooks is fixedly connected to one end, far away from the flat plate, of the soft cloth, a plurality of hanging rings are fixedly connected to a pair of inner walls of the drying box, and the hooks are connected with the hanging rings in an articulated mode.

Further, the outside of drying cabinet is equipped with the main tuber pipe, branch pipe and main tuber pipe fixed connection and intercommunication each other, the one end fixedly connected with air-supply line of branch pipe is kept away from to the main tuber pipe, the side fixedly connected with exhaust pipe of main tuber pipe is kept away from to the drying cabinet, the exhaust pipe is located the upside of air supply net ring.

The use method of the tumbler type glass test tube drying device comprises the following steps:

s1, placing the cleaned test tubes into each balance net cover one by one, and closing the balance net covers;

s2, uniformly placing the balance net cover provided with the test tubes on the upper end of the flat plate;

s3, straightening the soft cloth upwards, and respectively hanging the pair of hooks on the pair of hanging rings, wherein the soft cloth is surrounded and blocked outside the balance mesh enclosure;

s4, introducing hot air into the branch pipe, and blowing the hot air to the balance net cover through the air supply net ring to cause the balance net cover to shake back and forth to quickly dry the test tube inside the balance net cover.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through putting into the balanced screen panel with the test tube, balanced screen panel is in when surrounding the protection test tube, provide certain free activity space for the test tube, in drying process, through hot-blast wind-force, the balanced screen panel that bears the weight of the test tube is in and lasts the slope, rock and not fall the state, it rocks to have driven the test tube to carry out slope in step on the one hand, promote the outflow of the inside moisture of test tube, drop, the drying rate of test tube inner wall with higher speed, on the other hand, the test tube is inside because of the removal of inertia effect emergence certain degree at balanced screen panel, change the contact point of test tube and balanced screen panel, meanwhile, it is inside that hot-blast entering through balanced screen panel is inside, with the test tube that rocks the state carries out the wholeness, the mobile contact, the realization is all-round to the test tube, the high-efficient drying process of no blind spot formula.

(2) The principle of tumbler among the prior art is adopted to the balance screen panel, makes the focus of balance screen panel be located the inside center of gravity hemisphere to, after placing the test tube, the gravity of test tube influences the focus of balance screen panel and can be ignored, and the balance screen panel that is equipped with the test tube is in stable vertical state when not receiving external force, takes place the slope when receiving external force and rocks, and can reply balanced state by oneself.

(3) When the intra-annular exhaust hot-blast of air supply net blows to balanced screen panel, on the one hand, wind-force passes through a hard net section of thick bamboo, it is inside that main half shell and vice half shell get into, with the test tube, the outer wall contact, realize the drying, on the other hand, wind-force still can cause balanced screen panel constantly to make a round trip to rock, and be in the state that does not fall, rocking of balanced screen panel can drive the test tube and carry out the slope in step, and take place certain removal in balanced screen panel inside under inertia, not only can promote the outflow of the inside moisture of test tube, drop, the drying rate of test tube inner wall with higher speed, and simultaneously, move in balanced screen panel inside by oneself through the test tube, can change the test tube and protect cotton and the contact point of air supply net ring on the test tube, the all-round drying to the test tube is realized, drying rate has not only been improved, and the dry blind spot is difficult for appearing on making the test tube.

(4) Before placing the balance screen panel, with couple and link separation, soft cloth is the natural state of drooping, conveniently places the balance screen panel on, places the balance screen panel and finishes the back, lifts up soft cloth, hangs the couple on the link, plays the effect of enclosure to the balance screen panel through soft cloth, makes the balance screen panel be difficult for following the flat board when the slope is rocked and drops.

Drawings

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a second perspective view of the present invention;

FIG. 3 is a first perspective view of the balance net cover of the present invention;

FIG. 4 is a second perspective view of the balance net cover of the present invention;

fig. 5 is a third perspective view of the balance net cover of the present invention;

FIG. 6 is a schematic front view of the present invention in use;

FIG. 7 is a schematic front view of the balance net according to the present invention;

FIG. 8 is a schematic front view of the balance net according to the present invention when swaying;

FIG. 9 is a perspective view at the flat panel of the present invention;

fig. 10 is a perspective view three of the present invention.

The reference numbers in the figures illustrate:

1 drying cabinet, 2 chamber doors, 3 flat plates, 301 air holes, 4 balance screen covers, 41 gravity hemispheres, 42 hard screen cylinders, 43 main half shells, 44 auxiliary half shells, 45 flexible screens, 46 upper cotton protection, 47 lower cotton protection, 48 perforated discs, 5 air supply screen rings, 6 exhaust pipes, 7 branch pipes, 8 main air pipes, 9 air inlet pipes, 10 positioning color lines, 11 soft fabrics, 12 hooks and 13 hanging rings.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1 and 2, a tumbler glass test tube drying device includes a drying oven 1 and an oven door 2, the oven door 2 is rotatably connected to an outer end of the drying oven 1, a plurality of uniformly distributed flat plates 3 are fixedly connected to an inner wall of the drying oven 1 from top to bottom, a plurality of air supply net rings 5 are fixedly connected to an inner wall of the drying oven 1, the air supply net rings 5 are in one-to-one correspondence with the flat plates 3, the air supply net rings 5 are located on an upper side of the flat plates 3, a plurality of balance net covers 4 are placed on an upper end of the flat plates 3, and the air supply net rings 5 are U-shaped, as shown in fig. 6, the air supply net rings 5 are used for discharging hot air, so that the hot air is blown to the balance net covers 4 along a direction from the periphery to the middle, and is continuously shaken.

Referring to fig. 3 and 4, the balance net cover 4 includes a gravity hemisphere 41, a hard net cylinder 42 is fixedly connected to an upper end of the gravity hemisphere 41, and a main half shell 43 and an auxiliary half shell 44 which are symmetrical to each other are connected to an upper end of the hard net cylinder 42, referring to fig. 7, a flexible net 45 and a lower cotton guard 47 are fixedly connected to an inner wall of the hard net cylinder 42, the flexible net 45 is located on an upper side of the lower cotton guard 47, and upper cotton guards 46 are fixedly connected to upper inner walls of the main half shell 43 and the auxiliary half shell 44.

Referring to fig. 3 and 4, the lower end of the main half-shell 43 is fixedly connected to the upper end of the hard mesh cylinder 42, the upper end of the auxiliary half-shell 44 is rotatably connected to the upper end of the hard mesh cylinder 42, the upper ends of the main half-shell 43 and the auxiliary half-shell 44 are both fixedly connected to the perforated disks 48, a bolt assembly is in threaded connection between the pair of perforated disks 48, the bolt assembly comprises a screw rod and a nut, one end of the screw rod is inserted into the pair of perforated disks 48 and then fixed by the nut, referring to fig. 5, when the test tube is used, the auxiliary half-shell 44 is rotated outwards to open the balance mesh enclosure 4, then the test tube is placed between the main half-shell 43 and the auxiliary half-shell 44, the opening of the test tube faces downwards until the test tube abuts against the upper end of the flexible mesh 45, and the upper end of the test tube is completely located inside the main half-shell 43, and then the auxiliary half-shell 44 is rotated to close the main half-shell 43 and fixed by the bolt assembly.

Gravity hemisphere 41 adopts heavy material to make, like metal iron material, hard net section of thick bamboo 42, main half shell 43 and vice half shell 44 adopt light material to make, like light plastics, adopt the principle of tumbler among the prior art, make the focus of balance screen panel 4 be located the inside center of gravity hemisphere 41, and, after placing the test tube, the gravity of test tube influences ignorable to the focus of balance screen panel 4, the balance screen panel 4 that is equipped with the test tube is when not receiving external force, is in stable vertical state, take place the slope when receiving external force and rock, and can return to balanced state by oneself.

Referring to fig. 7, the lowest end of the flexible net 45 is not lower than the lowest end of the lower protective cotton 47, that is: when the test tube inclines in the balance screen 4, the lower end of the test tube moves on the flexible net 45, the lower end of the test tube can be protected by the lower protective cotton 47 and is not easy to contact and collide with the hard net cylinder 42, the distance from the lowest end of the flexible net 45 to the lower end of the upper protective cotton 46 is smaller than the length of the test tube, the distance from the lowest end of the flexible net 45 to the inner top end of the upper protective cotton 46 is larger than the length of the test tube, when the test tube is placed in the balance screen 4, the upper end of the test tube contacts with the upper protective cotton 46 and is protected by the upper protective cotton 46, please refer to fig. 8.

Therefore, when the hot wind exhausted from the air supply net ring 5 blows to the balance net cover 4, on the one hand, the wind power passes through the hard net cylinder 42, the main half shell 43 and the auxiliary half shell 44 enter the interior of the main half shell 43 and the auxiliary half shell 44, and contact with the inner wall and the outer wall of the test tube to realize drying, on the other hand, the wind power can also cause the balance net cover 4 to continuously shake back and forth, and the balance net cover 4 is in an unbent state, the shaking of the balance net cover 4 can drive the test tube to synchronously incline, and certain movement occurs inside the balance net cover 4 under inertia, so that the outflow and dropping of the water inside the test tube can be promoted, the drying rate of the inner wall of the test tube can be accelerated, meanwhile, the test tube automatically moves inside the balance net cover 4, the contact point between the test tube and the upper protection cotton 46 and the air supply net ring 5 can be changed, the omnibearing drying rate is realized, and the drying blind spot is not easy to appear on the test tube.

Referring to fig. 9, a plurality of positioning color wires 10 are uniformly distributed on the upper surface of the flat plate 3, a plurality of air holes 301 are uniformly distributed on the flat plate 3, the air holes 301 are located at the edge region of the flat plate 3 and are distributed in a U shape, the positioning color wires 10 are located at the middle region of the flat plate 3, and the positioning color wires 10 facilitate rapid and accurate placement of the balance net cover 4, so that the balance net cover 4 is uniformly distributed on the flat plate 3, and the balance net cover 4 is convenient to tilt and rock.

Referring to fig. 9, the upper end of the flat plate 3 is fixedly connected with a soft cloth 11, the soft cloth 11 is located on one side of the flat plate 3 close to the box door 2, the vertical length of the soft cloth 11 is 0.5-0.8 times of the vertical length of the balance net cover 4, one end of the soft cloth 11 far away from the flat plate 3 is fixedly connected with a pair of hooks 12, referring to fig. 2, a pair of inner walls of the drying box 1 are fixedly connected with a plurality of hanging rings 13, the hooks 12 are hung on the hanging rings 13, the hooks 12 are separated from the hanging rings 13 before the balance net cover 4 is placed, the soft cloth 11 is in a natural drooping state, the balance net cover 4 is conveniently placed on the flat plate 3, after the balance net cover 4 is placed, the soft cloth 11 is lifted upwards, the hooks 12 are hung on the hanging rings 13, and the balance net cover 4 is surrounded by the soft cloth 11, so that the balance net cover 4 is not easy to fall off from the flat plate 3 when the balance net cover is tilted.

Referring to fig. 6 and 10, a plurality of branch pipes 7 corresponding to the air supply net rings 5 one by one are fixedly connected to a side end of the drying box 1, the branch pipes 7 penetrate through an outer end of the drying box 1 and are communicated with an inside of the air supply net rings 5, a main air pipe 8 is arranged on an outer side of the drying box 1, the branch pipes 7 are fixedly connected with the main air pipe 8 and are communicated with each other, an air inlet pipe 9 is fixedly connected to one end of the main air pipe 8, which is far away from the branch pipes 7, hot air is conveniently introduced into the plurality of air supply net rings 5 through the main air pipe 8 and the air inlet pipe 9, an exhaust pipe 6 is fixedly connected to a side end of the drying box 1, which is far away from the main air pipe 8, the exhaust pipe 6 is located on an upper side of the air supply net rings 5, and the exhaust pipe 6 is used for discharging and collecting the hot air with moisture.

s1, placing the cleaned test tubes into the balance net covers 4 one by one, and closing the balance net covers 4;

s2, uniformly placing the balance net cover 4 with the test tubes on the upper end of the flat plate 3;

s3, straightening the soft cloth 11 upwards, and respectively hanging the pair of hooks 12 on the pair of hanging rings 13, wherein the soft cloth 11 is enclosed outside the balance mesh enclosure 4;

s4, introducing hot air into the branch pipe 7, and blowing the hot air to the balance net cover 4 through the air supply net ring 5 to cause the balance net cover 4 to shake back and forth to quickly dry the test tube inside.

According to the invention, the test tube is placed in the balance mesh enclosure 4, the balance mesh enclosure 4 provides a certain free movement space for the test tube while surrounding the protection test tube, in the drying process, the balance mesh enclosure 4 bearing the test tube is in a state of continuously inclining, shaking and not falling through hot wind power, on one hand, the test tube is driven to synchronously incline and shake to promote the water in the test tube to flow out and drop, and the drying speed of the inner wall of the test tube is accelerated, on the other hand, the test tube moves to a certain degree in the balance mesh enclosure 4 due to the inertia effect to change the contact point of the test tube and the balance mesh enclosure 4, meanwhile, hot wind enters the balance mesh enclosure 4 to be in full-surface and flowing contact with the test tube in the shaking state, and the omnibearing blind-point-free efficient drying process of the test tube is realized.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a not formula glass test tube drying device that falls, includes drying cabinet (1) and chamber door (2), chamber door (2) rotate to be connected in the outer end of drying cabinet (1), its characterized in that: the inner wall of the drying box (1) is fixedly connected with a plurality of uniformly distributed flat plates (3) from top to bottom in sequence, the inner wall of the drying box (1) is also fixedly connected with a plurality of air supply net rings (5), the air supply net rings (5) correspond to the flat plates (3) one by one, the air supply net rings (5) are positioned on the upper sides of the flat plates (3), the side end of the drying box (1) is fixedly connected with a plurality of branch pipes (7) which correspond to the air supply net rings (5) one by one, and the branch pipes (7) penetrate through the outer end of the drying box (1) and are communicated with the interior of the air supply net rings (5);

a plurality of balance screen covers (4) have been placed to the upper end of flat board (3), balance screen cover (4) are including gravity hemisphere (41), the hard net section of thick bamboo (42) of upper end fixedly connected with of gravity hemisphere (41), the upper end of hard net section of thick bamboo (42) is connected with main half shell (43) and vice half shell (44) of mutual symmetry, the inner wall fixedly connected with flexible net (45) of hard net section of thick bamboo (42) protects cotton (47) with down, flexible net (45) are located and protect cotton (47) upside down, protect cotton (46) on the equal fixedly connected with of last inner wall of main half shell (43) and vice half shell (44), the focus of balance screen cover (4) is located gravity hemisphere (41) inside center.

2. The apparatus for drying tumbler glass test tubes as set forth in claim 1, wherein: the lower end of the main half shell (43) is fixedly connected with the upper end of the hard net barrel (42), and the upper end of the auxiliary half shell (44) is rotatably connected with the upper end of the hard net barrel (42).

3. The apparatus for drying tumbler glass test tubes as set forth in claim 1, wherein: the upper end of main half shell (43) and vice half shell (44) is equal fixedly connected with foraminiferous dish (48), and is a pair of threaded connection has bolt assembly between foraminiferous dish (48), bolt assembly includes screw rod and nut.

4. The apparatus for drying tumbler glass test tubes as set forth in claim 1, wherein: the gravity hemisphere (41) is made of heavy materials, and the hard net barrel (42), the main half shell (43) and the auxiliary half shell (44) are made of light materials.

5. The apparatus for drying tumbler glass test tubes as set forth in claim 1, wherein: the lowermost end of the flexible net (45) is not lower than the lowermost end of the lower cotton protection (47), the distance from the lowermost end of the flexible net (45) to the lower end of the upper cotton protection (46) is less than the length of the test tube, and the distance from the lowermost end of the flexible net (45) to the inner top end of the upper cotton protection (46) is greater than the length of the test tube.

6. The apparatus for drying tumbler glass test tubes as set forth in claim 1, wherein: the utility model discloses a dull and stereotyped (3) of location, including dull and stereotyped (3), the upper surface coating of dull and stereotyped (3) is equipped with a plurality of evenly distributed's various line of location (10), a plurality of evenly distributed's wind hole (301) have been seted up on dull and stereotyped (3), wind hole (301) are located the marginal zone of dull and stereotyped (3), and are the distribution of U type, location various line (10) are located the middle zone of dull and stereotyped (3).

7. The apparatus for drying tumbler glass test tubes as set forth in claim 1, wherein: the upper end of the flat plate (3) is fixedly connected with soft cloth (11), the soft cloth (11) is positioned on one side, close to the box door (2), of the flat plate (3), and the vertical length of the soft cloth (11) is 0.5-0.8 times that of the balance mesh enclosure (4).

8. The apparatus for drying tumbler glass test tubes as claimed in claim 7, wherein: one end fixedly connected with a pair of hooks (12) of flat board (3) is kept away from in soft cloth (11), a plurality of links (13) of the equal fixedly connected with of a pair of inner walls of drying cabinet (1), hook (12) articulate with link (13).

9. The apparatus for drying tumbler glass test tubes as set forth in claim 1, wherein: the outside of drying cabinet (1) is equipped with main air pipe (8), branch pipe (7) and main air pipe (8) fixed connection and intercommunication each other, the one end fixedly connected with air-supply line (9) of branch pipe (7) are kept away from in main air pipe (8), side fixedly connected with exhaust pipe (6) of main air pipe (8) are kept away from in drying cabinet (1), exhaust pipe (6) are located the upside of air supply net ring (5).

10. The apparatus for drying tumbler glass test tubes as claimed in claim 8, wherein: the using method comprises the following steps:

s1, placing the cleaned test tubes into the balance net covers (4) one by one, wherein the openings of the test tubes face downwards until the test tubes abut against the upper end of the flexible net (45), and the upper ends of the test tubes are completely positioned on the inner sides of the main half shells (43) and close the balance net covers (4);

s2, uniformly placing the balance net cover (4) provided with the test tubes on the upper end of the flat plate (3);

s3, straightening the soft cloth (11) upwards, and respectively hanging the pair of hooks (12) on the pair of hanging rings (13), wherein the soft cloth (11) is enclosed and blocked outside the balance mesh enclosure (4);

s4, introducing hot air into the branch pipe (7), and blowing the hot air to the balance net cover (4) through the air supply net ring (5) to cause the balance net cover (4) to shake back and forth to quickly dry the test tube inside the balance net cover.