CN220657212U

CN220657212U - Silicone adhesive color mixing and cooling device

Info

Publication number: CN220657212U
Application number: CN202322286928.8U
Authority: CN
Inventors: 朱亚军; 曹木江; 张海波
Original assignee: Dudi Zhejiang New Materials Co ltd
Current assignee: Dudi Zhejiang New Materials Co ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-03-26
Anticipated expiration: 2033-08-24

Abstract

The utility model discloses a silicone adhesive color mixing cooling device, which relates to the technical field of silicone adhesive cooling, and comprises a supporting table, wherein an auxiliary cooling mechanism for alternating the temperature between color mixing silicone adhesive and cold water is arranged on one side of the supporting table.

Description

Silicone adhesive color mixing and cooling device

Technical Field

The utility model relates to the technical field of silicone adhesive cooling, in particular to a silicone adhesive color mixing cooling device.

Background

The silicone adhesive is similar to ointment, is a common adhesive for families, and mainly comprises sodium silicate, acetic acid and organic silicone, and is solidified into a tough rubber solid material once the silicone adhesive contacts with air, and is mainly divided into a dealcoholization type, a deamination type and a depropanization type, and the silicone adhesive is commonly used for bonding and sealing in glass, so commonly called glass adhesive, and in the silicone adhesive processing production, the silicone adhesive is mixed with pigment for color mixing under a heating state, and then is packaged after cooling.

In the prior art, when the silicone adhesive after color matching is cooled, the stored silicone adhesive is generally soaked by cold water, so that heat is transmitted to the cold water, for example, after the cold water is heated due to excessive absorption of the heat of the silicone adhesive, the heated cold water is discharged and then injected, and the method can cool the silicone adhesive, but has long time and low cooling efficiency, so that the silicone adhesive color matching and cooling device is provided.

Disclosure of Invention

The utility model aims at: in order to solve the problems in the prior art, the utility model provides a silicone adhesive color mixing and cooling device.

The utility model adopts the following technical scheme for realizing the purposes:

the utility model provides a silicone adhesive cooling device that adjusts colors, includes the brace table, one side of brace table is provided with the supplementary cooling mechanism that is used for alternating the temperature between the silicone adhesive of adjusting colors and the cold water, one side of supplementary cooling mechanism is provided with the storage mechanism that is used for storing the silicone adhesive of adjusting colors, one side of storage mechanism is provided with the cooling mechanism that is used for stirring the heat transfer to the silicone adhesive of adjusting colors, is provided with the wind-force subassembly that is used for exchanging the heat gas and the outside air that produce the silicone adhesive of adjusting colors in the cooling mechanism, and cooling mechanism is provided with the drying module that is used for absorbing moisture and dust that contains in the outside air.

Further, the auxiliary cooling mechanism comprises a water storage cylinder, the water storage cylinder is arranged on the top side of the supporting table, a water inlet is formed in the outer wall of the water storage cylinder, and a water outlet is formed in the outer wall of the water storage cylinder.

Further, the storage mechanism comprises a group of four connecting columns, the connecting columns are arranged on the bottom side of the inner wall of the water storage barrel, the top side of each connecting column is provided with a storage barrel, and the storage barrels are arranged at the opening of the water storage barrel.

Further, the pipe hole has been seted up to the topside of stock section of thick bamboo, install the inlet pipe on the inner wall of pipe hole, movable mounting has the piece of sealing on the inner wall of inlet pipe, the inner wall downside of stock section of thick bamboo runs through to the bottom side of brace table has the round hole, install the unloading pipe on the inner wall of round hole, the unloading pipe is installed in the water storage section of thick bamboo, install the control valve on the outer wall of unloading pipe.

Further, the heat dissipation mechanism comprises a rotating column, a round groove is formed in the bottom side of the storage cylinder, the rotating column is rotatably mounted on the inner wall of the round groove, and three stirring frames are mounted on the outer wall of the rotating column.

Further, scraping rods are arranged on one sides, far away from the rotating columns, of the three stirring frames, and the scraping rods are in contact with the inner wall of the storage barrel.

Further, the air intake has been seted up to the topside of stock barrel, the flabellum is installed to the topside of spliced pole, the fixed column is installed to the topside of flabellum, hollow post is installed to the topside of stock barrel, and hollow post is corresponding with the air intake, and the flabellum is installed in hollow post, install dry board one on the inner wall of hollow post, the rotation hole has been seted up to the topside of dry board one, and the fixed column rotation is installed on the inner wall of rotation hole, belt pulley one is installed to the topside of fixed column, the motor is installed to the topside of stock barrel, belt pulley two is installed to the topside of motor, rotate on the outer wall of belt pulley two and install driving belt, driving belt rotates and installs on the outer wall of belt pulley one.

Further, two air outlets are symmetrically formed in the top side of the storage barrel, two cylindrical rings are symmetrically arranged in the top side of the storage barrel, the air outlets correspond to the cylindrical rings, and drying plates II are arranged on the inner walls of the two cylindrical rings.

The beneficial effects of the utility model are as follows:

the utility model is characterized in that the water storage cylinder, the stirring frame, the fan blades and the like are arranged, the water inlet and the water outlet are respectively connected through the water pipe, cold water is injected into the water storage cylinder, so that the cold water is contacted with the material storage cylinder, the belt pulley II is driven to rotate by the starting motor, the driving belt is a transmission center of the belt pulley I and the belt pulley II, the belt pulley I is driven to rotate, the fixed column connected with the belt pulley I rotates, the fan blades rotate along with the belt pulley I, wind is blown into the material storage cylinder, the rotating column also rotates along with the belt pulley I, the stirring frame is driven to stir the color-mixed silicone adhesive in the material storage cylinder, the position of the color-mixed silicone adhesive is continuously changed and is alternated with the temperature of the cold water, the pigment and the silicone adhesive are fully mixed, the color mixing quality is improved, the fan and the stirring frame are matched, and the heat is rapidly dispersed while stirring, the air outlet is arranged on the air inlet, the air inlet is arranged on the air outlet, the outside air is drawn by the fan blades, the outside air is filtered by the air, the air inlet is arranged on the air outlet, the outside air is prevented from entering the air inlet, the outside air is prevented from carrying dust and moisture, after a period of temperature reduction, for example, cold water in the water storage cylinder is heated alternately due to the heat of the color-mixed silicone adhesive, hot water in the water storage cylinder is discharged through the water outlet, and then the cold water is refilled, so that the mixed silicone adhesive is discharged by the heat of the alternate temperature of the cold water and the blowing and radiating of wind under the stirring basis, and meanwhile, the cooling is carried out, the cooling efficiency of the color-mixed silicone adhesive is improved, the practicability is improved, and the color-mixed silicone adhesive and pigment are fully mixed, and the color mixing quality is improved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic structural view of the sealing block of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

fig. 4 is a schematic view of a partial structure of a heat dissipating mechanism of the present utility model.

Reference numerals: 1-a supporting table; 2-an auxiliary cooling mechanism; 201-a water storage cylinder; 202-a water inlet; 203-a water outlet; 3-a storage mechanism; 301-connecting columns; 302-a stock barrel; 303-feeding pipe; 304, a sealing block; 305-blanking pipe; 306-a control valve; 307-round holes; 4-a heat dissipation mechanism; 401-hollow column; 402-drying plate one; 403-cylindrical ring; 404-drying the second plate; 405-rotating the column; 406-stirring rack; 407-scraping rod; 408-fan blades; 409-fixing columns; 410-pulley one; 411-drive belt; 412-an electric motor; 413-pulley two.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

In describing embodiments of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", "upper", etc. are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in place when the inventive product is used, are merely for convenience of description and simplification of description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Referring to fig. 1-3, the silicone adhesive color mixing cooling device comprises a supporting table 1, an auxiliary cooling mechanism 2 for alternating the temperature between the color mixing silicone adhesive and cold water is arranged on one side of the supporting table 1, a storage mechanism 3 for storing the color mixing silicone adhesive is arranged on one side of the auxiliary cooling mechanism 2, a heat dissipation mechanism 4 for stirring and exchanging heat for the color mixing silicone adhesive is arranged on one side of the storage mechanism 3, a wind power component for exchanging heat gas generated by the color mixing silicone adhesive with external air is arranged in the heat dissipation mechanism 4, a drying component for absorbing moisture and dust contained in the external air is arranged in the heat dissipation mechanism 4, when the device is in use, the color mixing silicone adhesive is placed in the storage mechanism 3, because the color mixing silicone adhesive has heat and is connected with the auxiliary cooling mechanism 2 through a water pipe, cold water is injected into the auxiliary cooling mechanism 2, the color-mixed silicone adhesive is cooled by water, then the driving component on the heat dissipation mechanism 4 is started to drive the stirring component of the heat dissipation mechanism 4 to stir the color-mixed silicone adhesive, so that the color-mixed silicone adhesive in the storage mechanism 3 is uniformly alternated with the water cooling temperature, meanwhile, the pigment and the silicone adhesive are fully mixed, the wind power component is driven to blow external wind into the storage mechanism 3, the drying component absorbs moisture and dust of the external air, the external wind is lower than the heat of the color-mixed silicone adhesive, the wind power is used for cooling the color-mixed silicone adhesive, part of the heat of the color-mixed silicone adhesive in the storage mechanism 3 is discharged by the wind power component, the color-mixed silicone adhesive is alternately discharged with the cold water temperature and the wind power blowing heat under the stirring, the cooling is carried out, the cooling efficiency of the color-mixed silicone adhesive is improved, the practicality is improved, and then the silicone adhesive and the pigment are fully mixed, and the color mixing quality is improved.

Referring to fig. 1-3, in the utility model, an auxiliary cooling mechanism 2 comprises a water storage barrel 201, the water storage barrel 201 is arranged on the top side of a supporting table 1, a water inlet 202 is arranged on the outer wall of the water storage barrel 201, a water outlet 203 is arranged on the outer wall of the water storage barrel 201, the water inlet 202 and the water outlet 203 are respectively connected through water pipes, cold water is injected into the water storage barrel 201 through the water inlet 202, for example, after the cold water in the water storage barrel 201 becomes hot, hot water in the water storage barrel 201 can be discharged through the water outlet 203, and then the cold water is refilled, so that the water cooling of the color-mixed silicone adhesive through water cooling is realized.

Referring to fig. 1-3, in the present utility model, the storage mechanism 3 includes a set of connecting columns 301, one set of four connecting columns 301 are installed at the bottom side of the inner wall of the storage barrel 201, the top side of one set of connecting columns 301 is installed with a storage barrel 302, the storage barrel 302 is installed at the opening of the storage barrel 201, and by setting the connecting columns 301 in the storage barrel 201, the storage barrel 302 is lifted, the water storage space in the storage barrel 201 is increased, so that cold water can wrap the outer wall and the bottom side of the storage barrel 302, and the temperature transfer area to the storage barrel 302 is increased.

Referring to fig. 1-3, in the utility model, a pipe hole is formed on the top side of a storage barrel 302, a feed pipe 303 is mounted on the inner wall of the pipe hole, a sealing block 304 is movably mounted on the inner wall of the feed pipe 303, a round hole 307 is formed on the bottom side of the inner wall of the storage barrel 302, a blanking pipe 305 is mounted on the inner wall of the round hole 307, the blanking pipe 305 is mounted in a water storage barrel 201, a control valve 306 is mounted on the outer wall of the blanking pipe 305, the color-mixed silicone adhesive is injected into the storage barrel 302 through the feed pipe 303, after the color-mixed silicone adhesive is cooled, the speed of discharging the color-mixed silicone adhesive from the blanking pipe 305 can be controlled through the control valve 306, when the color-mixed silicone adhesive is not used, the pipe mouth of the feed pipe 303 is sealed through the sealing block 304, dust is prevented from entering, the next use is influenced, and the quality is reduced.

Referring to fig. 1-4, in the present utility model, the heat dissipation mechanism 4 includes a rotating column 405, a circular groove is formed at the bottom side of the storage barrel 302, the rotating column 405 is rotatably mounted on the inner wall of the circular groove, three stirring frames 406 are mounted on the outer wall of the rotating column 405, the rotating column 405 rotates in the circular groove, the circular groove is arranged to prevent the rotating column 405 from rotating to generate offset, and the stirring frames 406 are driven to stir the color-mixed silicone adhesive in the storage barrel 302, so that the position of the color-mixed silicone adhesive is constantly changed to alternate with the temperature of cold water, and simultaneously, the pigment and the silicone adhesive are fully mixed, thereby improving the color mixing quality.

Referring to fig. 2-4, in the present utility model, a scraping rod 407 is installed at one side of three stirring frames 406 far from a rotating column 405, the scraping rod 407 is in contact with the inner wall of a storage barrel 302, and when the stirring frames 406 stir the color-mixed silicone adhesive, the scraping rod 407 is driven to scrape the inner wall of the storage barrel 302, so that the color-mixed silicone adhesive is prevented from adhering to the inner wall of the storage barrel 302, and the alternation between the color-mixed silicone adhesive and the temperature of cold water is improved.

Referring to fig. 2-4, in the present utility model, an air inlet is opened at the top side of a storage cylinder 302, a fan blade 408 is installed at the top side of a rotating column 405, a fixed column 409 is installed at the top side of the fan blade 408, a hollow column 401 is installed at the top side of the storage cylinder 302, the hollow column 401 corresponds to the air inlet, the fan blade 408 is installed in the hollow column 401, a first drying plate 402 is installed on the inner wall of the hollow column 401, a rotating hole is opened at the top side of the first drying plate 402, the fixed column 409 is rotatably installed on the inner wall of the rotating hole, a first belt pulley 410 is installed at the top side of the fixed column 409, a motor 412 is installed at the top side of the storage cylinder 302, a second belt pulley 413 is installed at the top side of the motor 412, the outer wall of the belt pulley II 413 is rotatably provided with a driving belt 411, the driving belt 411 is rotatably arranged on the outer wall of the belt pulley I410, when the motor 412 is started, the belt pulley II 413 is driven to rotate, the driving belt 411 is a transmission center of the belt pulley I410 and the belt pulley II 413, the belt pulley I410 is driven to rotate, a fixed column 409 connected with the belt pulley I rotates, a fan blade 408 rotates along with the belt, wind is blown into the storage cylinder 302, the rotating column 405 also rotates along with the fan blade, the hollow column 401 supports the drying plate I402, the drying plate I402 absorbs moisture in the outside air drawn by the fan blade 408, dust contained in the air is filtered, and therefore wind power cooling is provided for the color-mixed silicone adhesive.

Referring to fig. 2-3, in the present utility model, two air outlets are symmetrically provided on the top side of the storage cylinder 302, two cylindrical rings 403 are symmetrically installed on the top side of the storage cylinder 302, the air outlets correspond to the cylindrical rings 403, two drying plates 404 are installed on the inner walls of the two cylindrical rings 403, and the air is blown to the storage cylinder 302 by the fan blades 408 to contact with the color-mixed silicone adhesive, so that the heat of the color-mixed silicone adhesive is diffused, a part of the heat can be discharged by the air outlets, the cylindrical rings 403 support the two drying plates 404, and the arrangement of the two drying plates 404 absorbs moisture and dust carried by the outside air, thereby improving the heat dissipation efficiency.

In summary, when in use, the color-mixed silicone adhesive is placed in the storage mechanism 3, as the color-mixed silicone adhesive has heat, the color-mixed silicone adhesive is connected with the auxiliary cooling mechanism 2 through a water pipe, cold water is injected into the auxiliary cooling mechanism 2, the color-mixed silicone adhesive is cooled by water, then the driving component on the heat dissipation mechanism 4 is started to drive the stirring component of the heat dissipation mechanism 4 to stir the color-mixed silicone adhesive, so that the color-mixed silicone adhesive in the storage mechanism 3 is uniformly alternated with the water cooling temperature, the pigment and the silicone adhesive are fully mixed, the wind power component is driven to blow external wind into the storage mechanism 3, the drying component absorbs the moisture and dust of the external air, and as the temperature of the external wind is lower than the heat of the color-mixed silicone adhesive, the color-mixed silicone adhesive is cooled by wind power, and part of the heat of the color-mixed silicone adhesive in the storage mechanism 3 is discharged by the wind power component, thereby realizing that the mixed color silicone adhesive alternately discharges partial heat with the cold water temperature and the wind blowing heat under the stirring basis, simultaneously cooling and cooling, improving the cooling efficiency of the mixed color silicone adhesive, improving the practicability, further realizing that the silicone adhesive and pigment are fully mixed, improving the color mixing quality, respectively accessing a water inlet 202 and a water outlet 203 through a water pipe, injecting cold water into a water storage barrel 201 through the water inlet 202, for example, after the cold water in the water storage barrel 201 becomes hot, discharging hot water in the water storage barrel 201 through the water outlet 203 and then re-injecting the cold water, thereby realizing that the mixed color silicone adhesive is cooled by water, improving the water storage space in the water storage barrel 201 by arranging a connecting column 301 in the water storage barrel 201, enabling the cold water to wrap the outer wall and the bottom side of the water storage barrel 302, improving the temperature transmission area of the water storage barrel 302, the method has the advantages that the color-mixed silicone adhesive is injected into the storage barrel 302 through the feeding pipe 303, after the color-mixed silicone adhesive is cooled, the speed of discharging the color-mixed silicone adhesive from the discharging pipe 305 can be controlled through the control valve 306, when the color-mixed silicone adhesive is not used, the mouth of the feeding pipe 303 is sealed through the sealing block 304 to prevent dust from entering, the next use is affected, the quality is reduced, the rotating column 405 is rotated in the circular groove to prevent the rotating column 405 from rotating to generate offset, the stirring frame 406 is driven to stir the color-mixed silicone adhesive in the storage barrel 302, the position of the color-mixed silicone adhesive is continuously changed to alternate with the temperature of cold water, meanwhile, the pigment and the silicone adhesive are fully mixed, the color-mixed quality is improved, the scraping rod 407 is driven to scrape the inner wall of the storage barrel 302 when the color-mixed silicone adhesive is stirred by the stirring frame 406, the method comprises the steps of preventing the toned silicone adhesive from adhering to the inner wall of a storage cylinder 302, improving the alternation between the toned silicone adhesive and cold water temperature, driving a belt pulley II 413 to rotate when a motor 412 is started, driving a belt pulley I410 to rotate by a transmission center of the belt pulley II 413, driving a belt pulley I410 to rotate by a fixed column 409 connected with the belt pulley I410, rotating a fan blade 408 to blow air into the storage cylinder 302, rotating a rotating column 405 along with the rotating column, supporting a drying plate I402 by a hollow column 401, absorbing moisture in external air drawn by the fan blade 408 by the drying plate I402, filtering dust contained in the air, thereby realizing wind cooling of the toned silicone adhesive, contacting the toned silicone adhesive by the blowing of the fan blade 408 to the storage cylinder 302, diffusing heat of the toned silicone adhesive, discharging part of the heat from an exhaust outlet, supporting the drying plate II 404 by a cylindrical ring 403, and the second drying plate 404 absorbs moisture and dust carried by the outside air, thereby improving the heat dissipation efficiency.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Silicone adhesive color mixing cooling device, including supporting bench (1), its characterized in that: one side of brace table (1) is provided with auxiliary cooling mechanism (2) that are used for alternating to the temperature between the silicone adhesive of mixing of colors and the cold water, one side of auxiliary cooling mechanism (2) is provided with storage mechanism (3) that are used for storing the silicone adhesive of mixing of colors, one side of storage mechanism (3) is provided with heat dissipation mechanism (4) that are used for stirring heat transfer to the silicone adhesive of mixing of colors, is provided with the wind power subassembly that is used for exchanging with the outside air to the heat gas that the silicone adhesive of mixing of colors produced in heat dissipation mechanism (4), and heat dissipation mechanism (4) are provided with the drying module that is used for absorbing moisture and dust that contains in the outside air.

2. The silicone adhesive color mixing and cooling device according to claim 1, wherein the auxiliary cooling mechanism (2) comprises a water storage cylinder (201), the water storage cylinder (201) is installed on the top side of the supporting table (1), a water inlet (202) is formed in the outer wall of the water storage cylinder (201), and a water outlet (203) is formed in the outer wall of the water storage cylinder (201).

3. The silicone adhesive color mixing and cooling device according to claim 2, wherein the storage mechanism (3) comprises a group of four connecting columns (301), the connecting columns (301) are arranged at the bottom side of the inner wall of the water storage barrel (201), the top side of one group of connecting columns (301) is provided with a storage barrel (302), and the storage barrel (302) is arranged at the opening of the water storage barrel (201).

4. The silicone adhesive color mixing and cooling device according to claim 3, wherein a pipe hole is formed in the top side of the stock barrel (302), a feed pipe (303) is mounted on the inner wall of the pipe hole, a sealing block (304) is movably mounted on the inner wall of the feed pipe (303), a round hole (307) is formed in the bottom side of the inner wall of the stock barrel (302), a blanking pipe (305) is mounted on the inner wall of the round hole (307), and a control valve (306) is mounted on the outer wall of the blanking pipe (305).

5. The silicone adhesive color mixing and cooling device according to claim 4, wherein the heat dissipation mechanism (4) comprises a rotating column (405), a round groove is formed in the bottom side of the stock cylinder (302), the rotating column (405) is rotatably mounted on the inner wall of the round groove, and three stirring frames (406) are mounted on the outer wall of the rotating column (405).

6. The device according to claim 5, wherein the three stirring frames (406) are provided with scraping bars (407) on sides far away from the rotating column (405), and the scraping bars (407) are in contact with the inner wall of the stock cylinder (302).

7. The silicone adhesive color mixing and cooling device according to claim 6, wherein the top side of the stock cylinder (302) is provided with an air inlet, the top side of the rotating column (405) is provided with a fan blade (408), the top side of the fan blade (408) is provided with a fixed column (409), the top side of the stock cylinder (302) is provided with a hollow column (401), the hollow column (401) corresponds to the air inlet, the fan blade (408) is arranged in the hollow column (401), the inner wall of the hollow column (401) is provided with a first drying plate (402), the top side of the first drying plate (402) is provided with a rotating hole, the fixed column (409) is rotatably arranged on the inner wall of the rotating hole, the top side of the fixed column (409) is provided with a first belt pulley (410), the top side of the stock cylinder (302) is provided with a motor (412), the top side of the motor (412) is provided with a second belt pulley (413), the outer wall of the second belt pulley (413) is rotatably provided with a driving belt (411), and the driving belt (411) is rotatably arranged on the outer wall of the first belt pulley (410).

8. The silicone adhesive color mixing and cooling device according to claim 7, wherein two air outlets are symmetrically arranged on the top side of the storage barrel (302), two cylindrical rings (403) are symmetrically arranged on the top side of the storage barrel (302), the air outlets correspond to the cylindrical rings (403), and two drying plates (404) are arranged on the inner walls of the two cylindrical rings (403).