Energy-saving and environment-friendly epoxy resin potting compound stirring kettle

Abstract

The present invention discloses an energy-saving and environment-friendly epoxy resin potting compound stirring kettle, specifically relating to the technical field of stirring kettles, including a base, on which a mixing component is arranged. The mixing component includes a backing plate arranged on the top of the base, and a first mesh cylinder is rotatably connected to the backing plate. A stirring cone block is fixedly arranged in the middle of the first mesh cylinder. In the present invention, raw materials penetrate the first mesh cylinder from the inside and flow into the space between the first mesh cylinder and the second mesh cylinder. After being mixed by the first mesh cylinder, the raw materials are filtered, and the function of eliminating the bubbles generated during mixing is realized first. The raw materials are shunted by a shunt bar, penetrate the second mesh cylinder and flow to the space between the second mesh cylinder and the inner lining cylinder. The way of shunting by the shunt bar avoids the raw materials from gathering together. The raw materials on the second mesh cylinder are scraped by the rotation of the inner lining cylinder and the second stirring scraper, which is easy to collect the raw materials and can effectively avoid bubbles or defects in the finished product after mixing the raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of stirring kettles, and more specifically, to an energy-saving and environment-friendly stirring kettle for epoxy resin potting materials. Background Art

[0002] In liquid material production operations, it is often necessary to stir and mix liquid raw materials. A stirring kettle is the most common stirring and mixing device, which is mainly used for mixing fluid materials such as liquids and colloids, breaking, dispersing, mixing, and stirring some originally immiscible materials. Epoxy resin has significant advantages in terms of energy conservation and environmental protection. First of all, the epoxy resin material itself has characteristics such as non-toxic, low-smoke, and halogen-free, which make it perform well in terms of environmental protection. The performance of the epoxy resin material in terms of energy conservation is mainly reflected in its high efficiency and long life. The epoxy resin composite material has the characteristics of high strength and light weight, can withstand large mechanical stresses, and at the same time reduce weight and improve the overall performance of the product.

[0003] Among them, the patent with the publication number CN210545087U discloses a reaction kettle for the production of epoxy resin potting materials, including an outer tank and an inner tank. The inner tank is arranged inside the outer tank and extends to the lower end of the outer tank. Two U-shaped scrapers for scraping off the remaining materials are attached to the inner wall of the inner tank, and the U-shaped scrapers can move along the inner wall of the inner tank. The two U-shaped scrapers are symmetrically and fixedly connected to the left and right ends of a rotating shaft. At least two stirring rods for stirring work are fixedly connected to both the left and right ends of the rotating shaft. The upper end of the rotating shaft is fixedly connected to a motor that provides driving force. The motor is fixedly connected to the middle position at the upper end of the outer tank. The upper end of the rotating shaft penetrates through the inner tank and the outer tank and is connected to the motor. A fan blade for heat dissipation is fixedly connected to the outer side of the rotating shaft ring, and the fan blade is located between the upper end of the inner tank and the inner top of the outer tank. When this structure is in use, the rotating shaft is rotated by using the motor, and then the stirring rods are driven to rotate, realizing the function of stirring the inner tank. The rotation of the rotating shaft will drive the U-shaped scrapers to rotate along the inner wall of the inner tank, thereby scraping off the remaining materials on the inner wall of the inner tank and avoiding waste of resources. However, during the stirring and mixing process of epoxy resin, violent stirring is likely to introduce air, and the air is involved in the liquid to form bubbles (similar to the foam generated when beating eggs). Slow stirring leads to low efficiency, slow results, and the resin viscosity is relatively low in the initial stage of mixing, and the bubbles are likely to stay. It is not easy to discharge the bubbles during the stirring process of a single stirring rod, resulting in bubbles or defects in the finished product. ... Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an energy-saving and environment-friendly stirring kettle for epoxy resin potting materials, aiming to solve the problems raised in the above background art.

[0005] The present invention provides the following technical solutions: an energy-saving and environment-friendly stirring kettle for epoxy resin potting materials, including a base, and a mixing component is arranged on the base;

[0006] The mixing component includes a backing plate disposed on the top of the base. A first mesh cylinder is rotatably connected to the backing plate. A stirring cone block is fixedly arranged in the middle of the first mesh cylinder. A plurality of first stirring scrapers are fixedly arranged on the stirring cone block. A plurality of first through holes are arranged on one side of each of the plurality of first stirring scrapers;

[0007] A second mesh cylinder is arranged on one side of the surface of the first mesh cylinder. A plurality of flow dividing strips are fixedly arranged on the outer side of the second mesh cylinder. A lining cylinder is rotatably connected to the bottom of the second mesh cylinder. An extension cylinder is fixedly arranged at the top end of the lining cylinder. The extension cylinder extends to the middle of the second mesh cylinder and is rotatably connected to the second mesh cylinder. A plurality of second stirring scrapers are fixedly arranged on both the lining cylinder and the extension cylinder. A plurality of second through holes are arranged on one side of the second stirring scraper. A converging cover is arranged outside the stirring cone block. A kettle body is arranged outside both the converging cover and the second mesh cylinder. The first through holes penetrate through the stirring cone block, and the second through holes penetrate through the lining cylinder and the extension cylinder;

[0008] It can be seen that in the above technical solution, after the raw materials are mixed between the converging cover and the stirring cone block, they flow into the stirring cone block through the first through holes. The first stirring scraper is used to scrape the raw materials on the inner wall of the converging cover, reducing raw material waste. After the raw materials are mixed by the first mesh cylinder, they are filtered, so that the raw materials penetrate the first mesh cylinder from the inside and flow between the first mesh cylinder and the second mesh cylinder. The raw materials are divided by the flow dividing strips, and the raw materials penetrate the second mesh cylinder and flow between the second mesh cylinder and the lining cylinder. The lining cylinder and the second stirring scraper rotate to scrape the raw materials on the second mesh cylinder;

[0009] A first connecting column is installed at the bottom of the stirring cone block by bolts. A second connecting column is installed at the bottom of the central cylinder by bolts. The bottom ends of the first connecting column and the second connecting column are both installed with connecting rings by bolts. And a driven gear is fixedly arranged at the bottom of each connecting ring. A driving gear is arranged between the two driven gears. The driving gear meshes with the driven gears. And a motor for driving the driving gear to rotate is installed on the base by bolts. The bottom of each of the two driven gears is rotatably connected to a column. The connecting ring and the driven gear are both located at the bottom of the backing plate, and the column is fixed in the base;

[0010] It can be seen that in the above technical solution, the driving gear is driven to rotate by the motor. The driving gear drives the connecting ring and the driven gears to rotate, and then the first connecting column and the second connecting column rotate. The stirring cone block is driven to rotate by the first connecting column, and then the stirring cone block, the first stirring scraper, the first mesh cylinder and the first through holes rotate, which is convenient for the first stirring scraper to rotate to scrape the raw materials adhering to the converging cover. The second connecting column drives the central cylinder, the guide vanes, the second stirring scraper and the lining cylinder to rotate, which is convenient for scraping the raw materials adhering to the second mesh cylinder.

[0011] A feed hopper is fixedly arranged at the top of the converging hood. A diversion cone block is fixedly arranged at the bottom of the inner wall of the feed hopper. A plurality of diversion openings are penetrated through the diversion cone block. The shape of the diversion cone block is conical. Both the converging hood and the second mesh cylinder are detachably connected to the kettle body through bolts, and a discharge pipe for discharging materials is arranged on one side of the bottom of the kettle body;

[0012] It can be seen that in the above technical solution, the raw materials can be diverged through the kettle body when converging in the feed hopper, avoiding the accumulation of the raw materials between the converging hood and the stirring cone block. Moreover, the kettle body can position the converging hood and the second mesh cylinder, avoiding the rotation of the converging hood and the second mesh cylinder. At the same time, the discharge pipe facilitates the discharge of the raw materials after the subsequent mixing is completed.

[0013] The technical effects and advantages of the present invention:

[0014] In the present invention, the materials are mixed between the converging hood and the stirring cone block. The stirring cone block and the first stirring scraper rotate to scrape the raw materials on the inner wall of the converging hood, reducing raw material waste. The raw materials penetrate the first mesh cylinder from the inside of the first mesh cylinder and flow between the first mesh cylinder and the second mesh cylinder. After being mixed by the first mesh cylinder, the function of eliminating the bubbles generated during the mixing is firstly realized;

[0015] In the present invention, the raw materials are diverged by the diversion strips. The raw materials penetrate the second mesh cylinder and flow between the second mesh cylinder and the inner lining cylinder. The way of diverging by the diversion strips avoids the aggregation of the raw materials. The inner lining cylinder and the second stirring scraper rotate to scrape the raw materials on the second mesh cylinder, which is easy to collect the raw materials;

[0016] In the present invention, the stirring cone block, the first stirring scraper, the first mesh cylinder and the first through hole rotate, which facilitates the rotation of the first stirring scraper to scrape the raw materials adhering to the converging hood. The second connecting column drives the central cylinder, the guide vanes, the second stirring scraper and the inner lining cylinder to rotate, which facilitates the scraping of the raw materials adhering to the second mesh cylinder. At the same time, the first stirring scraper and the second stirring scraper can respectively perform secondary stirring and mixing on the raw materials between the stirring cone block and the converging hood and between the second mesh cylinder and the inner lining cylinder, improving the stirring and mixing efficiency;

[0017] In the present invention, the raw materials can be diverged through the kettle body when converging in the feed hopper, avoiding the accumulation of the raw materials between the converging hood and the stirring cone block. Moreover, the kettle body can position the converging hood and the second mesh cylinder, avoiding the rotation of the converging hood and the second mesh cylinder. At the same time, the discharge pipe facilitates the discharge of the raw materials after the subsequent mixing is completed;

[0018] In summary, through the corresponding cooperation of each structure, the stirring cone block and the first stirring scraper rotate to scrape the raw materials on the inner wall of the gathering hood, reducing raw material waste. The raw materials penetrate the first mesh cylinder from the inside and flow into the space between the first mesh cylinder and the second mesh cylinder. After being mixed by the first mesh cylinder, the raw materials are filtered, and the function of eliminating the bubbles generated during mixing is realized first. The raw materials are divided by the flow dividing strip, penetrate the second mesh cylinder and flow to the space between the second mesh cylinder and the inner lining cylinder. The method of dividing the raw materials by the flow dividing strip avoids the raw materials gathering together. The inner lining cylinder and the second stirring scraper rotate to scrape the raw materials on the second mesh cylinder, which is easy to collect the raw materials. At the same time, the raw materials gathering in the feeding hopper can be divided by the kettle body, avoiding the raw materials piling up between the injection port and the stirring cone block. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present disclosure, the drawings required for use in some embodiments will be briefly introduced below. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limitations on the actual sizes of the products, the actual processes of the methods, the actual timings of the signals, etc. involved in the embodiments of the present disclosure.

[0020] Figure 1 It is the front view of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the mixing component of the present invention.

[0022] Figure 3 It is a schematic diagram of the base, connecting ring and motor of the present invention installed together.

[0023] Figure 4 For the present invention Figure 3 exploded view.

[0024] Figure 5 It is a schematic diagram of the second mesh cylinder, flow dividing strip, gathering hood, feeding hopper and flow dividing cone block of the present invention.

[0025] Figure 6 For the present invention Figure 5 cross-sectional view.

[0026] Figure 7 It is a schematic diagram of the first mesh cylinder, stirring cone block, inner lining cylinder, first stirring scraper and second stirring scraper of the present invention.

[0027] Figure 8 It is a schematic diagram of the inner lining cylinder, central cylinder, guide vane and second stirring scraper of the present invention.

[0028] The reference numerals are: 1, base; 2, backing plate; 3, first mesh cylinder; 4, stirring cone block; 5, first stirring scraper; 6, first through hole; 7, second mesh cylinder; 8, shunt strip; 9, inner lining cylinder; 10, second stirring scraper; 11, second through hole; 12, central cylinder; 13, guide vane; 14, extension cylinder; 15, first connecting column; 16, second connecting column; 17, connecting ring; 18, driven gear; 19, driving gear; 20, motor; 21, column; 22, converging hood; 23, feed hopper; 24, shunt cone block; 25, shunt port; 26, kettle body; 27, discharge pipe. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figures 1-8 shown in the energy-saving and environment-friendly epoxy resin potting compound stirring kettle, through the mixing component arranged on the base 1, the stirring cone block 4 and the first stirring scraper 5 rotate to scrape the raw materials on the inner wall of the converging hood 22, reducing raw material waste. The raw materials penetrate the inside of the first mesh cylinder 3 and flow into the space between the first mesh cylinder 3 and the second mesh cylinder 7. After being mixed by the first mesh cylinder 3, the raw materials are filtered, and the function of eliminating the bubbles generated during mixing is realized first. The raw materials are shunted by the distance between two adjacent shunt strips 8 to prevent the raw materials from piling up. The raw materials penetrate the second mesh cylinder 7 and flow to the space between the second mesh cylinder 7 and the inner lining cylinder 9. The shunt strip 8 is used to prevent the raw materials from gathering together. The inner lining cylinder 9 and the second stirring scraper 10 rotate to scrape the raw materials on the second mesh cylinder 7, which is easy to collect the raw materials. At the same time, the raw materials gathered in the feed hopper 23 can be shunted through the kettle body 26 to prevent the raw materials from being injected and piling up between the converging hood 22 and the stirring cone block 4. And the specific structure of the component is as follows;

[0031] The mixing component includes a backing plate 2 arranged on the top of the base 1. The first mesh cylinder 3 is rotatably connected to the backing plate 2. A stirring cone block 4 is fixedly arranged in the middle of the first mesh cylinder 3. A plurality of first stirring scrapers 5 are fixedly arranged on the stirring cone block 4. A plurality of first through holes 6 are arranged on one side of the plurality of first stirring scrapers 5;

[0032] On one side of the surface of the first mesh cylinder 3, a second mesh cylinder 7 is provided. A number of flow dividing strips 8 are fixedly arranged on the outer side of the second mesh cylinder 7. The bottom of the second mesh cylinder 7 is rotatably connected to a lining cylinder 9. The top end of the lining cylinder 9 is fixedly provided with an extension cylinder 14. The extension cylinder 14 extends to the middle of the second mesh cylinder 7 and is rotatably connected to the second mesh cylinder 7. A number of second stirring scraping plates 10 are fixedly arranged on both the lining cylinder 9 and the extension cylinder 14. A number of second through holes 11 are arranged on one side of the second stirring scraping plate 10. A gathering cover 22 is sleeved outside the stirring cone block 4. The kettle body 26 is sleeved outside both the gathering cover 22 and the second mesh cylinder 7. The first through hole 6 penetrates through the stirring cone block 4. The second through hole 11 penetrates through the lining cylinder 9 and the extension cylinder 14;

[0033] When in use according to the above structure, the raw materials are mixed between the gathering cover 22 and the stirring cone block 4 and then flow into the stirring cone block 4 through the first through hole 6. The first stirring scraping plate 5 is used to scrape the raw materials on the inner wall of the gathering cover 22 to reduce raw material waste. The raw materials are filtered after being mixed by the first mesh cylinder 3, so that the raw materials penetrate the first mesh cylinder 3 from the inside of the first mesh cylinder 3 and flow between the first mesh cylinder 3 and the second mesh cylinder 7. The raw materials are divided by the flow dividing strips 8 and then penetrate the second mesh cylinder 7 and flow between the second mesh cylinder 7 and the lining cylinder 9. The lining cylinder 9 and the second stirring scraping plate 10 rotate to scrape the raw materials on the second mesh cylinder 7;

[0034] As Figure 3 、 4 As shown in 6, a central cylinder 12 is fixedly arranged at the bottom of the lining cylinder 9. A number of guide vanes 13 are fixedly arranged on the outer side of the central cylinder 12, and each guide vane 13 is respectively located at the bottom of the corresponding second stirring scraping plate 10. The bottom of the stirring cone block 4 is installed with a first connecting column 15 through bolts. The bottom of the central cylinder 12 is installed with a second connecting column 16 through bolts. The bottom ends of the first connecting column 15 and the second connecting column 16 are both installed with connecting rings 17 through bolts. The bottom of each connecting ring 17 is fixedly provided with a driven gear 18. A driving gear 19 is arranged between the two driven gears 18. The driving gear 19 meshes with the driven gear 18. And a motor 20 for driving the driving gear 19 to rotate is installed on the base 1 through bolts. The bottom of each of the two driven gears 18 is rotatably connected to a column 21. The connecting ring 17 and the driven gear 18 are both located at the bottom of the backing plate 2, and the column 21 is fixed in the base 1;

[0035] When used according to the above structure, the driving motor 20 drives the driving gear 19 to rotate. The driving gear 19 drives the connecting ring 17 and the driven gear 18 to rotate, and then drives the first connecting column 15 and the second connecting column 16 to rotate. The first connecting column 15 drives the stirring cone block 4 to rotate, and then the stirring cone block 4, the first stirring scraper 5, the first mesh cylinder 3 and the first through hole 6 rotate. This facilitates the rotation of the first stirring scraper 5 to scrape off the raw materials adhering to the gathering cover 22. The second connecting column 16 drives the central cylinder 12, the guide vane 13, the second stirring scraper 10 and the inner lining cylinder 9 to rotate, which facilitates scraping off the raw materials adhering to the second mesh cylinder 7.

[0036] As Figure 1 , 2 , 5, and 6 show that a feed hopper 23 is fixedly arranged at the top of the gathering cover 22. A flow splitting cone block 24 is fixedly arranged at the bottom of the inner wall of the feed hopper 23. A plurality of flow splitting ports 25 are penetrated through the flow splitting cone block 24. The shape of the flow splitting cone block 24 is set as a cone. Both the gathering cover 22 and the second mesh cylinder 7 are detachably connected to the kettle body 26 by bolts, and a discharge pipe 27 for discharging materials is arranged on one side of the bottom of the kettle body 26.

[0037] When used according to the above structure, the raw materials can be split by the kettle body 26 when gathering in the feed hopper 23, avoiding the accumulation of raw materials between the gathering cover 22 and the stirring cone block 4. Moreover, the kettle body 26 can position the gathering cover 22 and the second mesh cylinder 7 to prevent the gathering cover 22 and the second mesh cylinder 7 from rotating. At the same time, the discharge pipe 27 facilitates the discharge of the raw materials after mixing.

[0038] The specific working principle is as follows. During stirring, the raw materials are added to the feed hopper 23 and split through the flow splitting ports 25. The raw materials are transported through the flow splitting ports 25 between the gathering cover 22 and the stirring cone block 4. The motor 20 is started to drive the driving gear 19 to rotate. The driving gear 19 meshes with the driven gear 18, and then drives each connecting ring 17, the first connecting column 15 and the second connecting column 16 to rotate.

[0039] When the first connecting column 15 rotates, it drives the stirring cone block 4 to rotate. The stirring cone block 4 drives the first stirring scraper 5 to rotate, realizing the stirring and mixing of the materials between the stirring cone block 4 and the gathering cover 22. The rotation of the first stirring scraper 5 is used to scrape off the raw materials that have been mixed between the stirring cone block 4 and the gathering cover 22. The raw materials are discharged after being filtered through the first mesh cylinder 3, facilitating the raw materials to flow into the middle of the inner lining cylinder 9 through the second mesh cylinder 7 and the extension cylinder 14 after being filtered.

[0040] During the process of the raw materials passing through the first mesh cylinder 3, larger air bubbles (air bubbles with a diameter larger than the pores) are intercepted by the microporous structure of the first mesh cylinder 3, making it impossible for them to pass through, and thus being isolated upstream. Moreover, during the interception process, the flow rate can also be reduced, giving the air bubbles more time to float upward. After being filtered by the first mesh cylinder 3, the raw materials pass through the second mesh cylinder 7 for filtration. By affecting the wettability of the material and changing the stability of the air bubbles, the air bubbles are prompted to burst and be discharged, effectively avoiding the appearance of air bubbles or defects in the finished product;

[0041] The raw materials on the second mesh cylinder 7 are scraped off by the second stirring scraper 10 and flow into the inner lining cylinder 9 through the second through hole 11. The central cylinder 12 and the guide vanes 13 rotate in the inner lining cylinder 9 to discharge the material through the discharge pipe 27.

[0042] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An epoxy resin potting compound stirring kettle with energy conservation and environmental protection, comprising a base (1), characterized in that: A mixing component is provided on the base (1). The mixing component includes a backing plate (2) provided on the top of the base (1). A first mesh cylinder (3) is rotatably connected to the backing plate (2). A stirring cone block (4) is fixedly provided in the middle of the first mesh cylinder (3). A number of first stirring scrapers (5) are fixedly provided on the stirring cone block (4). A number of first through holes (6) are provided on one side of the plurality of first stirring scrapers (5). On one side of the surface of the first mesh cylinder (3), a second mesh cylinder (7) is provided. A number of flow dividing strips (8) are fixedly provided on the outer side of the second mesh cylinder (7). A lining cylinder (9) is rotatably connected to the bottom of the second mesh cylinder (7). The top of the lining cylinder (9) is fixedly provided with an extension cylinder (14). The extension cylinder (14) extends to the middle of the second mesh cylinder (7) and is rotatably connected to the second mesh cylinder (7). A number of second stirring scrapers (10) are fixedly provided on both the lining cylinder (9) and the extension cylinder (14). A number of second through holes (11) are provided on one side of the second stirring scrapers (10). A converging cover (22) is sleeved outside the stirring cone block (4). A kettle body (26) is sleeved outside both the converging cover (22) and the second mesh cylinder (7). A feed hopper (23) is fixedly provided on the top of the converging cover (22). A flow dividing cone block (24) is fixedly provided on the bottom inner wall of the feed hopper (23). A number of flow dividing openings (25) are penetrated through the flow dividing cone block (24). The shape of the flow dividing cone block (24) is conical. The first through holes (6) penetrate through the stirring cone block (4), and the second through holes (11) penetrate through the lining cylinder (9) and the extension cylinder (14).

2. The energy-saving and environment-friendly epoxy resin potting compound stirring kettle according to claim 1, characterized in that: A central cylinder (12) is fixedly provided at the bottom of the lining cylinder (9). A number of guide vanes (13) are fixedly provided on the outer side of the central cylinder (12), and each of the guide vanes (13) is respectively located at the bottom of the corresponding second stirring scraper (10).

3. The energy-saving and environment-friendly epoxy resin potting compound stirring kettle according to claim 2, wherein: The bottom of the stirring cone block (4) is installed with a first connecting column (15) by bolts. The bottom of the central cylinder (12) is installed with a second connecting column (16) by bolts.

4. The energy-saving and environment-friendly epoxy resin potting compound stirring kettle according to claim 3, wherein: The bottom ends of the first connecting column (15) and the second connecting column (16) are both installed with connecting rings (17) by bolts, and a driven gear (18) is fixedly provided at the bottom of each of the connecting rings (17).

5. The energy-saving and environment-friendly epoxy resin potting compound stirring kettle according to claim 4, wherein: A driving gear (19) is provided between the two driven gears (18). The driving gear (19) meshes with the driven gears (18), and a motor (20) for driving the driving gear (19) to rotate is installed on the base (1) by bolts.

6. The energy-saving and environment-friendly epoxy resin potting compound stirring kettle according to claim 4, wherein: The bottom of each of the two driven gears (18) is rotatably connected to a column (21). The connecting rings (17) and the driven gears (18) are both located at the bottom of the backing plate (2), and the column (21) is fixed in the base (1).

7. The energy-saving and environment-friendly epoxy resin potting compound stirring kettle according to claim 1, characterized in that: Both the converging cover (22) and the second mesh cylinder (7) are detachably connected to the kettle body (26) by bolts, and a discharge pipe (27) for discharging materials is provided on one side of the bottom of the kettle body (26).

Images