CN220892706U - Refrigerating equipment for film transfer storage device - Google Patents

Refrigerating equipment for film transfer storage device Download PDF

Info

Publication number
CN220892706U
CN220892706U CN202322591262.7U CN202322591262U CN220892706U CN 220892706 U CN220892706 U CN 220892706U CN 202322591262 U CN202322591262 U CN 202322591262U CN 220892706 U CN220892706 U CN 220892706U
Authority
CN
China
Prior art keywords
box body
refrigeration box
refrigeration
groove
test tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202322591262.7U
Other languages
Chinese (zh)
Inventor
孙华辉
杨丽敏
卢海洋
李明辉
吴亚东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Dinghan Biotechnology Co ltd
Original Assignee
Henan Dinghan Biotechnology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Dinghan Biotechnology Co ltd filed Critical Henan Dinghan Biotechnology Co ltd
Priority to CN202322591262.7U priority Critical patent/CN220892706U/en
Application granted granted Critical
Publication of CN220892706U publication Critical patent/CN220892706U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The utility model relates to the technical field of refrigeration boxes applying ice, such as ice, and discloses a film transferring object placing device refrigeration device.

Description

Refrigerating equipment for film transfer storage device
Technical Field
The utility model relates to the technical field of refrigeration boxes applying ice, such as ice, in particular to a refrigeration device of a film transfer object holder.
Background
The Western blotting method is an important technical means for detecting biological proteins, is also called an immunoblotting test, is proposed by 1979 where Michelson-Friedel-crafts biological research is carried out in Switzerland, is a commonly used experimental method in molecular biology, biochemistry and immunogenetics, is widely applied to various aspects of gene expression research, antibody activity detection, early disease diagnosis and the like at protein level, and is a key step affecting whether the Western blotting method is successfully implemented or not.
At present, two modes of cooling are generally adopted during film transfer: the first is to put the transfer tube into a refrigerator, which is cumbersome to handle. The second is to put the transfer film test tube in the container, put the ice-cube into the container to cool down, this cooling mode is simple, but if the temperature is lowered by the ice-cube, because there is a gap between the ice-cube and the ice-cube, so the transfer film test tube will be contacted with the ice-cube in some places and will not be contacted with the ice-cube in some places, the temperature of the contact position of the ice-cube and the transfer film test tube will decrease faster, and the temperature of the contact position of the transfer film test tube and the ice-cube will decrease slower, which will cause the uneven cooling of the transfer film test tube.
Disclosure of utility model
(One) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a film transfer object holder refrigeration device which has the function of cooling a film transfer test tube by combining ice cubes and cold water, and the ice water formed by combining the ice cubes and the cold water can be contacted with the outer surface of the film transfer test tube in an omnibearing manner, so that all parts of the film transfer test tube can be cooled at the same speed, and the cooling uniformity of the film transfer test tube is ensured.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the refrigerating equipment of the film transfer object placing device comprises a refrigerating box body, wherein an ice adding port is formed in the upper side of the refrigerating box body, a water inlet is formed in the upper side of the refrigerating box body, and the water inlet is arranged at the rear side of the ice adding port;
the left side of the refrigeration box body is provided with a water outlet, the ice adding port, the water inlet and the water outlet are all communicated with the inside of the refrigeration box body, the upper side of the refrigeration box body is provided with a first placing groove, the bottom wall of the first placing groove is provided with a second placing groove, and the second placing groove is communicated with the inside of the refrigeration box body;
The inner part of the first placing groove is provided with a film transferring test tube, the outer surface of the film transferring test tube is fixedly sleeved with a fixing ring, and the front side of the refrigeration box body is fixedly connected with a thermometer;
Wherein, the inside of refrigeration box is provided with jack-up mechanism.
Preferably, a water inlet pipe is arranged in the water inlet, and a blocking block is arranged in the water outlet;
The upper side of the refrigeration box body is fixedly connected with a motor, the output end of the motor is fixedly connected with a transmission shaft, and the lower end of the transmission shaft rotates to penetrate through the interior of the refrigeration box body;
Wherein, the transmission shaft is located the inside surface fixedly connected with stirring vane of one side of refrigeration box.
Preferably, the jacking mechanism comprises two top plate grooves, and the two top plate grooves are formed in the bottom wall of the first placing groove;
Wherein, two roof grooves are left and right sides and set up on the diapire of first standing groove, and the inside of binary cold box is extended to the front side of two roof grooves.
Preferably, the front sides of the two top plate grooves are provided with connecting grooves which are respectively communicated with the two top plate grooves;
Wherein, the front side of the refrigeration box body is provided with a control switch groove, and the rear wall of the control switch groove extends into the connecting groove;
Wherein, the inside in two roof grooves all activity is provided with the roof, and the inside of connecting groove is all extended into to the front side of two roof.
Preferably, a rotating shaft is rotatably connected in the connecting groove, and the left end and the right end of the rotating shaft are respectively rotatably connected on the left wall and the right wall of the connecting groove;
wherein, the front sides of two roof all fixed connection is on the surface of pivot.
Preferably, a control switch is fixedly connected to the outer surface of the rotating shaft, and the front side of the control switch extends into the control switch groove;
wherein the front side of the control switch passes through the control switch groove and extends out of the front side of the refrigeration box.
(III) beneficial effects
Compared with the prior art, the utility model provides the refrigerating equipment of the transfer film storage device, which has the following beneficial effects:
(1) According to the refrigerating equipment of the film transfer object placing device, the water inlet pipe is communicated with the water pipe, cold water is placed into the refrigerating box body from the water inlet, meanwhile ice cubes are added into the refrigerating box body from the ice adding port, water after the cold water and the ice cubes are mixed can be further cooled, the ice water can contact the outer surface of the film transfer test tube, at the moment, the temperature inside the film transfer test tube can start to drop, the ice water can contact all parts of the outer surface of the film transfer test tube, gaps during ice cube cooling can not occur, the motor is started, the motor starts to transmit power from the output end, the transmission shaft is driven to rotate, the transmission shaft drives the stirring blade to rotate, the stirring blade rotates to stir and mix the water inside the refrigerating box body, the situation that the water temperature at the position of the film transfer test tube is higher than the water temperature at the ice adding port is avoided, meanwhile, the thermometer can monitor the temperature of the ice water inside the refrigerating box body in real time, when the temperature is too high, ice is added into the refrigerating box body through the ice adding port again, if the water in the refrigerating box body is too much and can not be added with ice, the blocking block is opened, the water in the refrigerating box body flows out from the water outlet, and the blocking block is used again to block the water outlet after discharging a part of water, ice cubes can be continuously added, after cooling is finished, the fixing ring is jacked up through the jacking mechanism, the fixing ring can drive the film transfer test tube to be synchronously jacked up, then the jacked film transfer test tube can be taken out, the function of cooling the film transfer test tube can be realized through combining the ice cubes with cold water, the ice water formed by combining the ice cubes with the cold water can be contacted with the outer surface of the film transfer test tube in an omnibearing manner, all parts of the film transfer test tube can be cooled at the same speed, the uniformity of cooling of the film transferring test tube is ensured.
(2) This commentaries on classics membrane put thing refrigeration plant, through when the cooling of commentaries on classics membrane test tube is accomplished and is taken out, the staff pushes down control switch downwards, control switch drives the pivot and begins to rotate, the pivot drives two roof and begins to rotate in step, the rear side of two roof begins the upside and removes, two roof can drive the solid fixed ring in the first standing groove and begin the upside and remove, gu fixed ring drives commentaries on classics membrane test tube and reciprocates, when waiting until gu fixed ring to remove the upside of first standing groove, the staff just can press from both sides tight solid fixed ring and reciprocate, it reciprocates to drive commentaries on classics membrane test tube, just so just can take out commentaries on classics membrane test tube, when cooling, with commentaries on classics membrane test tube can move down to the inside of refrigeration box, gu fixed ring can move to the first standing groove in, gu fixed ring can be fixed with the contact formation of the diapire of first standing groove, the roof can be pressed to the inside of roof groove at this moment, can make the taking out through jack-up mechanism and make commentaries on classics membrane test tube more convenient.
Drawings
FIG. 1 is a schematic diagram of a refrigeration apparatus for a film transfer container according to the present utility model;
FIG. 2 is a schematic diagram of the internal connection structure of the refrigeration case of the present utility model;
FIG. 3 is a schematic diagram of a cross-sectional connecting structure of a refrigeration case according to the present utility model;
FIG. 4 is an enlarged schematic view of FIG. 3 at A;
FIG. 5 is a schematic diagram of the connection structure of the transfer film test tube of the present utility model.
In the figure: 1. a refrigeration box body; 11. an ice adding port; 12. a water inlet; 13. a water outlet; 14. a first placement groove; 15. a second placement groove; 16. a roof trough; 17. a connecting groove; 18. a control switch groove; 2. a water inlet pipe; 21. blocking; 3. a motor; 31. a transmission shaft; 32. stirring blades; 4. a top plate; 41. a rotating shaft; 42. a control switch; 5. a thermometer; 6. transferring a film test tube; 61. and a fixing ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 5, the present utility model provides a new technical solution: a refrigerating device of a film-turning object placing device comprises a refrigerating box body 1, wherein an ice adding port 11 is formed in the upper side of the refrigerating box body 1, a water inlet 12 is formed in the upper side of the refrigerating box body 1, the water inlet 12 is arranged at the rear side of the ice adding port 11, a water outlet 13 is formed in the left side of the refrigerating box body 1, the ice adding port 11, the water inlet 12 and the water outlet 13 are communicated with the inside of the refrigerating box body 1, a water inlet pipe 2 is arranged in the water inlet 12, a blocking block 21 is arranged in the water outlet 13, a motor 3 is fixedly connected to the upper side of the refrigerating box body 1, a transmission shaft 31 is fixedly connected to the output end of the motor 3, the lower end of the transmission shaft 31 rotates to penetrate through the inside of the refrigerating box body 1, a stirring blade 32 is fixedly connected to the outer surface of one side of the inside of the refrigerating box body 1, a first placing groove 14 is formed in the upper side of the refrigerating box body 1, a second placing groove 15 is formed in the bottom wall of the first placing groove 14, the second placing groove 15 is communicated with the interior of the refrigeration box body 1, the film transferring test tube 6 is arranged in the first placing groove 14, the fixing ring 61 is sleeved on the outer surface of the film transferring test tube 6, the thermometer 5 is fixedly connected to the front side of the refrigeration box body 1, the thermometer 5 can detect the temperature of water in the refrigeration box body 1 and display the temperature on the front side panel of the thermometer 5, the jacking mechanism is arranged in the refrigeration box body 1, when the refrigerator begins to work, the film transferring test tube 6 is firstly placed in the refrigeration box body 1 through the second placing groove 15, at the moment, the fixing ring 61 is contacted with the bottom wall of the first placing groove 14, the film transferring test tube 6 is placed, then the water inlet pipe 2 is communicated with the water pipe, cold water is placed in the refrigeration box body 1 from the water inlet 12, ice cubes are simultaneously added into the refrigeration box body 1 from the ice adding port 11, the cold water can be further cool with the water after the ice-cube mixes, the frozen water can contact the surface of commentaries on classics membrane test tube 6, the inside temperature of commentaries on classics membrane test tube 6 can begin to descend this moment, the frozen water can contact each part of commentaries on classics membrane test tube 6 surface, the clearance when can not appear the ice-cube cooling, and then start motor 3, motor 3 starts transmission power from the output, drive transmission shaft 31 and rotate, transmission shaft 31 drives stirring vane 32 and rotates, stirring vane 32 rotates and can stir the inside water of refrigeration box 1, the condition that has avoided commentaries on classics membrane test tube 6 position temperature to be higher than to add ice mouth 11 position temperature appears, simultaneously thermometer 5 can monitor the inside frozen water's of control cold box 1 temperature in real time, add ice to the inside of refrigeration box 1 through adding ice mouth 11 when the temperature is too high, if the inside water of refrigeration box 1 is too much can not add the ice in time, open the shutoff piece 21, the inside water of refrigeration box 1 can flow from delivery port 13, use shutoff piece 21 again to hold delivery port 13 after the partial water of etc., afterwards just can continue to add the water, can be added, the condition of the inside water temperature-cube 61 is higher than the ice-cube cooling, the condition is higher than the condition of adding the inside water, the condition of adding the ice-cube can be carried out through the change membrane 61, can all the test tube through the change the mode, can be combined with the test tube to the test tube, the test tube has been cooled by the same temperature, can be combined with the test tube, the test tube has the same temperature, and can be cooled by the test tube has the same with the test tube, and can be cooled by the test tube and can be cooled by the same.
The jacking mechanism comprises two top plate grooves 16, the two top plate grooves 16 are all arranged on the bottom wall of the first placing groove 14, the two top plate grooves 16 are arranged left and right on the bottom wall of the first placing groove 14, the front sides of the two top plate grooves 16 are extended into the interior of the cold box body 1, the front sides of the two top plate grooves 16 are provided with connecting grooves 17, the connecting grooves 17 are respectively communicated with the two top plate grooves 16, the front sides of the cold box body 1 are provided with control switch grooves 18, the rear walls of the control switch grooves 18 are extended into the interior of the connecting grooves 17, the interiors of the two top plate grooves 16 are movably provided with top plates 4, the front sides of the two top plates 4 are all extended into the interior of the connecting grooves 17, the interior of the connecting grooves 17 is rotationally connected with a rotating shaft 41, the left end and the right end of the rotating shaft 41 are respectively rotationally connected onto the left wall and the right wall of the connecting grooves 17, the front sides of the two top plates 4 are fixedly connected onto the outer surfaces of the rotating shaft 41, the outer surface of the rotating shaft 41 is fixedly connected with a control switch 42, the front side of the control switch 42 extends into the control switch groove 18, the front side of the control switch 42 passes through the control switch groove 18 and extends out of the front side of the refrigeration box body 1, when the film rotating test tube 6 needs to be taken out after cooling is completed, a worker presses the control switch 42 downwards, the control switch 42 drives the rotating shaft 41 to start rotating, the rotating shaft 41 drives the two top plates 4 to synchronously start rotating, the rear sides of the two top plates 4 start to move upwards, the two top plates 4 drive a fixed ring 61 in the first placing groove 14 to start moving upwards, the fixed ring 61 drives the film rotating test tube 6 to move upwards, when the fixed ring 61 moves to the upper side of the first placing groove 14, the worker can clamp the fixed ring 61 to move upwards to drive the film rotating test tube 6 to move upwards, so just can take out the commentaries on classics membrane test tube 6, when cooling, will change membrane test tube 6 aim at second standing groove 15 and can move down, change membrane test tube 6 and can move the inside of refrigeration box 1, in fixed ring 61 can move first standing groove 14, fixed ring 61 can contact with the diapire of first standing groove 14 and form fixedly, roof 4 can be pressed to the inside of roof groove 16 this moment, through this kind of mode, can make when taking out the commentaries on classics membrane test tube 6, make the convenience of taking out of commentaries on classics membrane test tube 6 through jack-up mechanism.
Working principle: when the refrigerator starts to work, firstly, the film-transferring test tube 6 is placed into the refrigeration box body 1 through the second placing groove 15, at the moment, the fixing ring 61 is contacted with the bottom wall of the first placing groove 14, so that the film-transferring test tube 6 can be placed completely, then the water inlet pipe 2 is communicated with the water pipe, cold water is placed into the refrigeration box body 1 from the water inlet 12, meanwhile, ice cubes are added into the refrigeration box body 1 from the ice adding port 11, the water after the cold water and the ice cubes are mixed is further cooled, the ice cubes can contact the outer surface of the film-transferring test tube 6, at the moment, the temperature of the inner part of the film-transferring test tube 6 is reduced, the ice cubes can contact all parts of the outer surface of the film-transferring test tube 6, gaps during cooling of the ice cubes can not appear, the motor 3 is started, the motor 3 starts to transmit power from the output end to drive the transmission shaft 31 to rotate, the transmission shaft 31 drives the stirring blades 32 to rotate, stirring vane 32 rotates and stirs the inside water of refrigeration box 1 and mix, avoided commentaries on classics membrane test tube 6 position temperature to be higher than the condition that adds ice port 11 position temperature and appear, simultaneously thermometer 5 can monitor the temperature of the inside frozen water of control box 1 in real time, add ice to the inside of refrigeration box 1 through adding ice port 11 again when the temperature is too high, if the inside water of refrigeration box 1 is too much can not add ice, open the shutoff piece 21, the inside water of refrigeration box 1 can follow delivery port 13, wait to discharge a part of water and use the shutoff piece 21 again to block up delivery port 13, just can continue to add the ice-cube afterwards, after accomplishing the cooling, jack-up solid fixed ring 61 can drive commentaries on classics membrane test tube 6 and be jacked in step through jack-up, afterwards just can take out the commentaries on classics membrane test tube 6 of jack-up.
When starting to work, when the film transferring test tube 6 needs to be taken out after cooling is completed, a worker presses the control switch 42 downwards, the control switch 42 drives the rotating shaft 41 to start rotating, the rotating shaft 41 drives the two top plates 4 to synchronously start rotating, the rear sides of the two top plates 4 start moving upwards, the two top plates 4 can drive the fixing ring 61 in the first placing groove 14 to start moving upwards, the fixing ring 61 drives the film transferring test tube 6 to move upwards, when the fixing ring 61 moves to the upper side of the first placing groove 14, the worker can clamp the fixing ring 61 to move upwards, the film transferring test tube 6 is driven to move upwards, so that the film transferring test tube 6 can be taken out, when cooling is performed, the film transferring test tube 6 is aligned to the second placing groove 15 to move downwards, the film transferring test tube 6 can move to the inside of the refrigerating box 1, the fixing ring 61 can move into the first placing groove 14, the fixing ring 61 can be contacted with the bottom wall of the first placing groove 14 to form fixing, and at the moment, the top plate 4 can be pressed into the inside of the top plate groove 16.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a commentaries on classics membrane storage refrigeration plant, includes refrigeration box (1), its characterized in that: an ice adding port (11) is formed in the upper side of the refrigeration box body (1), a water inlet (12) is formed in the upper side of the refrigeration box body (1), and the water inlet (12) is formed in the rear side of the ice adding port (11);
The left side of the refrigeration box body (1) is provided with a water outlet (13), the ice adding port (11), the water inlet (12) and the water outlet (13) are all communicated with the inside of the refrigeration box body (1), the upper side of the refrigeration box body (1) is provided with a first placing groove (14), the bottom wall of the first placing groove (14) is provided with a second placing groove (15), and the second placing groove (15) is communicated with the inside of the refrigeration box body (1);
The inner part of the first placing groove (14) is provided with a film-transferring test tube (6), the outer surface of the film-transferring test tube (6) is fixedly sleeved with a fixing ring (61), and the front side of the refrigeration box body (1) is fixedly connected with a thermometer (5);
Wherein, the inside of refrigeration box (1) is provided with jack-up mechanism.
2. A transfer container refrigeration apparatus as set forth in claim 1 wherein: a water inlet pipe (2) is arranged in the water inlet (12), and a blocking block (21) is arranged in the water outlet (13);
The upper side of the refrigeration box body (1) is fixedly connected with a motor (3), the output end of the motor (3) is fixedly connected with a transmission shaft (31), and the lower end of the transmission shaft (31) rotates to penetrate through the interior of the refrigeration box body (1);
Wherein, the outer surface of the transmission shaft (31) at one side of the inner part of the refrigeration box body (1) is fixedly connected with a stirring blade (32).
3. A transfer container refrigeration apparatus as set forth in claim 1 wherein: the jacking mechanism comprises two top plate grooves (16), and the two top plate grooves (16) are formed in the bottom wall of the first placing groove (14);
Wherein, two roof grooves (16) are arranged on the bottom wall of the first placing groove (14) left and right, and the front sides of the two roof grooves (16) extend into the cold box body (1).
4. A film transfer container refrigeration apparatus as recited in claim 3 wherein: the front sides of the two roof grooves (16) are provided with connecting grooves (17), and the connecting grooves (17) are respectively communicated with the two roof grooves (16);
Wherein, the front side of the refrigeration box body (1) is provided with a control switch groove (18), and the rear wall of the control switch groove (18) extends into the connecting groove (17);
Wherein, the inside of two roof grooves (16) all is provided with roof (4) movably, and the front side of two roof (4) all extends into the inside of spread groove (17).
5. The film transfer container refrigeration apparatus of claim 4, wherein: the inside of the connecting groove (17) is rotationally connected with a rotating shaft (41), and the left end and the right end of the rotating shaft (41) are respectively rotationally connected to the left wall and the right wall of the connecting groove (17);
wherein, the front sides of the two top plates (4) are fixedly connected on the outer surface of the rotating shaft (41).
6. The film transfer container refrigeration apparatus of claim 5, wherein: a control switch (42) is fixedly connected to the outer surface of the rotating shaft (41), and the front side of the control switch (42) extends into the control switch groove (18);
Wherein the front side of the control switch (42) passes through the control switch groove (18) and extends out of the front side of the refrigeration box (1).
CN202322591262.7U 2023-09-22 2023-09-22 Refrigerating equipment for film transfer storage device Active CN220892706U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322591262.7U CN220892706U (en) 2023-09-22 2023-09-22 Refrigerating equipment for film transfer storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322591262.7U CN220892706U (en) 2023-09-22 2023-09-22 Refrigerating equipment for film transfer storage device

Publications (1)

Publication Number Publication Date
CN220892706U true CN220892706U (en) 2024-05-03

Family

ID=90842135

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322591262.7U Active CN220892706U (en) 2023-09-22 2023-09-22 Refrigerating equipment for film transfer storage device

Country Status (1)

Country Link
CN (1) CN220892706U (en)

Similar Documents

Publication Publication Date Title
CN220892706U (en) Refrigerating equipment for film transfer storage device
CN214841827U (en) High-precision temperature control water chiller device
CN218609071U (en) Anti-icing fluid agitating unit is used in processing production
CN216821559U (en) Quick thawing apparatus of meat products
CN220380034U (en) Full-automatic snowflake ice making device
CN220421098U (en) Cooling device of solid laser
CN215250756U (en) Liquid preparation device for cancer cell gene detection
CN210964011U (en) Chemical solution cools off crystallization device rapidly
CN210782752U (en) Meat product processing thawing apparatus
CN220771525U (en) Chemical cooling device
CN217180672U (en) Cooling liquid detection device
CN207136129U (en) Ice cream rolls up manufacturing machine
CN219781740U (en) Full-automatic boot surface rotary freezing setting machine
CN216155474U (en) Cooling device of oiling machine
CN218358563U (en) Novel double-shaft horizontal mixer
CN217258176U (en) Cooling water system for injection mold
CN219920146U (en) Quick-freezing structure for aquatic product processing
CN214746690U (en) Cooling circulating water system of refrigerating machine
CN221204007U (en) Congealer
CN219556162U (en) Conveying device convenient to cool rapidly for raw cattle slaughter house
CN220852729U (en) Novel double-helix instant freezer
CN218609017U (en) Low-temperature wax paste making machine
CN217844378U (en) Workbench type ice maker device
CN218936747U (en) Particle ice maker
CN216321998U (en) Constant temperature and humidity test box

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant