Device and method for continuously producing florasulam

Abstract

The invention provides a device and method for continuously producing florasulam, and relates to the technical field of pesticide preparation. The upper sealing kettle body is fixedly mounted at the top of the lower synthesis kettle body through bolts, a feeding hole is formed in the top of the upper sealing kettle body, and a discharging hole is formed in the bottom of the lower synthesis kettle body; a motor is mounted at the top of the upper sealed kettle body; a vertical rotating rod is connected to a driving shaft of the motor. When the rotating frame rotates around the vertical rotating rod at a constant speed, the rotating frame drives the two discharging pipes to synchronously rotate, so that added materials discharged by the discharging pipes are annularly dispersed, the subsequently added materials can be more quickly dispersed into original materials in the lower synthesis kettle body, and the local aggregation condition is avoided. The problem that in the application process of an existing synthesis reaction kettle for preparing florasulam, due to the fixed design of the position of a feeding port, various materials needing to be added are extremely prone to being gathered at specific positions in the reaction kettle is solved.

Description

Technical Field

[0001] The invention relates to the technical field of pesticide preparation, and in particular to a device and method for continuously producing florasulam. Background Art

[0002] Bispyribac is a herbicide that is often used in the agricultural field to control or kill weeds that affect crops. Bispyribac belongs to the triazole class of compounds and has a systemic conduction effect. After being absorbed by plants, it is transported to the entire plant body along with nutrients, thereby effectively killing weeds. The production and preparation of bispyribac requires a synthesis reactor.

[0003] For example, the Chinese patent "CN118976453B A pesticide processing suspension mixing reaction kettle" includes a mounting frame and a kettle body fixedly mounted on the mounting frame, wherein a self-adjusting stirring and cutting mechanism and a grinding auxiliary crushing mechanism are arranged in the kettle body, wherein the self-adjusting stirring and cutting mechanism includes a plurality of stirring and chopping components evenly spaced, a driving component for driving the stirring and chopping components, an adjusting component and a hollow rotating shaft rotatably mounted between the top inner wall and the bottom inner wall of the kettle body, wherein the soluble solid pesticide original drug particles are rapidly dissolved in the solvent by the high-speed rotation of the stirring and cutting blades, thereby increasing the dissolution rate, and at the same time, the high-speed rotating stirring and cutting blades generate a strong shear force, which can effectively break the attraction between the solid pesticide original drug particles and prevent the particles from agglomerating, and at the same time cut the larger particles into smaller particles, so that they are rapidly and evenly dispersed in the water, thereby ensuring the consistency of the particle size and forming a uniform and stable pesticide suspension.

[0004] In current production practice, the existing synthesis reactor used for the preparation of florasulam, during actual operation, has a fixed feed port design, which causes the various materials to be added to easily aggregate at specific positions inside the reactor. This material aggregation requires a relatively long time to fully disperse and evenly mix these materials, and the entire operation process appears to be relatively slow, which in turn has a significant impact on the production efficiency of the preparation of florasulam. Summary of the invention

[0005] The present invention relates to a device and method for continuously producing florasulam. Additive materials required for producing florasulam reach a discharge pipe through a feeding pipe, and are finally mixed with original materials in a synthesis lower kettle body through the discharge pipe. When a rotating frame rotates at a uniform speed around a vertical rotating rod, the rotating frame drives two discharge pipes to rotate synchronously. The added materials discharged from the discharge pipes are distributed in a ring shape, so that the subsequently added materials can be diffused into the original materials in the synthesis lower kettle body more quickly, thereby avoiding the occurrence of local aggregation and effectively improving the preparation and production efficiency of florasulam.

[0006] In a first aspect of the present disclosure, a device for continuously producing florasulam is provided, which specifically comprises: a synthetic lower kettle body; a sealed upper kettle body is fixedly installed on the top of the synthetic lower kettle body by bolts, a feed port is arranged on the top of the sealed upper kettle body, and a discharge port is arranged on the bottom of the synthetic lower kettle body; a motor is installed on the top of the sealed upper kettle body, a vertical rotating rod is connected to the driving shaft of the motor, and the vertical rotating rod is located in the synthetic lower kettle body and the sealed upper kettle body; a mixing impeller is arranged at the bottom end of the vertical rotating rod, and the mixing impeller is immersed in the material inside the synthetic lower kettle body; a rotating frame is installed on the top of the synthetic lower kettle body, the vertical rotating rod runs through the center of the rotating frame, and two small gears are installed inside the rotating frame; a feeding pipe is installed inside the sealed upper kettle body, and a discharge pipe is installed inside the synthetic lower kettle body, the top of the discharge pipe is connected to the feeding pipe, and the discharge pipe runs through the rotating frame; an auxiliary frame is connected to the outside of the discharge pipe, and the auxiliary frame is located in the synthetic lower kettle body, and the auxiliary frame is higher than the mixing impeller.

[0007] Furthermore, a gear ring is arranged on the top of the synthesis lower kettle body, the rotating frame is in rotational contact with the top side of the gear ring, the pinion is rotationally connected to the rotating frame, and the gear ring is meshed with two pinions.

[0008] Furthermore, a large gear is provided on the outside of the vertical rotating rod, and the large gear is rotatably connected to the center of the rotating frame. The large gear is meshed with two small gears. The motor drives the vertical rotating rod to rotate, and the large gear drives the small gear to rotate at the same time. The small gear is meshed with the gear ring to drive the rotating frame to rotate at a uniform speed around the vertical rotating rod.

[0009] Furthermore, the feeding pipe passes through the sealed upper kettle body, and an annular outer tube is arranged at the bottom of the feeding pipe. The cross section of the annular outer tube is C-shaped, and the opening of the annular outer tube faces downward. The bottom of the discharge pipe is immersed in the material inside the synthesis lower kettle body, and an annular inner tube is arranged at the top of the discharge pipe. The cross section of the annular inner tube is C-shaped, and the opening of the annular inner tube faces upward.

[0010] Furthermore, the annular inner tube is rotatably connected to the annular outer tube, and the feeding tube is connected to the discharge tube through the annular outer tube and the annular inner tube.

[0011] Furthermore, two transmission holes are arranged inside the rotating frame, and a discharge pipe runs through the transmission holes. An inclined blade is arranged near the bottom of the discharge pipe, and the inclined blade is inclined at 45 degrees. The additive material required for generating florasulam reaches the discharge pipe through the feeding pipe, and is finally mixed with the original material inside the synthesis lower kettle body through the discharge pipe. While the rotating frame rotates at a uniform speed around the vertical rotating rod, the rotating frame drives the two discharge pipes to rotate synchronously, so that the additive material discharged from the discharge pipe is distributed in a ring shape.

[0012] Furthermore, the vertical rotation rod passes through the end of the auxiliary frame, the auxiliary frame is located at the top of the inclined blades, the vertical rotation rod passes through the center of the auxiliary frame, and spiral blades are arranged on the outside of the auxiliary frame. When the two discharge pipes rotate at a uniform speed around the vertical rotation rod, the discharge pipes can drive the auxiliary frame to rotate synchronously.

[0013] The invention discloses a method for continuously producing florasulam, comprising the following steps: 1) First, the material is introduced into the synthesis lower kettle through the sealed feed port on the top of the upper kettle, and the additive material required to generate florasulam reaches the discharge pipe through the feed pipe, and finally is mixed with the original material in the synthesis lower kettle through the discharge pipe; 2) The motor drives the vertical rotating rod to rotate, and the materials in the synthesis lower kettle are mixed through the mixing impeller. At the same time, the large gear drives the small gear to rotate. The small gear is meshed with the gear ring and drives the rotating frame to rotate at a uniform speed around the vertical rotating rod; 3) The rotating frame drives the two discharge pipes to rotate synchronously. The added materials discharged from the discharge pipes are distributed in a ring shape to avoid the occurrence of local aggregation. The inclined blades push the materials close to the inner wall of the synthesis lower kettle inward to mix the materials inside and outside. 4) The discharge pipe drives the auxiliary frame to rotate synchronously, and the spiral blades are used to assist in mixing the materials. The successfully prepared bispyribac is discharged from the discharge port at the bottom of the synthesis lower kettle body, thus completing the preparation process of bispyribac.

[0014] The present invention provides a device and method for continuously producing florasulam, which has the following beneficial effects: When the present invention is in use, the motor drives the vertical rotating rod to rotate, and the materials in the synthesis lower kettle body are mixed through the mixing impeller. At the same time, the large gear drives the small gear to rotate, and the small gear is meshed with the gear ring to drive the rotating frame to rotate at a uniform speed around the vertical rotating rod.

[0015] In addition, the added materials required for the production of florasulam reach the discharge pipe through the feeding pipe, and are finally mixed with the original materials inside the synthesis lower kettle body through the discharge pipe. While the rotating frame rotates at a uniform speed around the vertical rotating rod, the rotating frame drives the two discharge pipes to rotate synchronously. The added materials discharged from the discharge pipes are distributed in a ring shape, so that the subsequent added materials can diffuse more quickly into the original materials inside the synthesis lower kettle body, avoiding the occurrence of local aggregation. The inclined blades push the materials close to the inner wall of the synthesis lower kettle body inward, so that the internal and external materials are mixed with each other, thereby improving the material mixing reaction effect.

[0016] In addition, when the two discharge pipes rotate at a uniform speed around the vertical rotating rod, the discharge pipes drive the auxiliary frame to rotate synchronously, and the spiral blades are used to assist in mixing the materials, further improving the material mixing rate, effectively shortening the time required for the preparation of florasulam, and continuously preparing florasulam, thereby improving the production efficiency of florasulam.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 The overall axial side structure schematic diagram of the present application is shown; Figure 2 The schematic diagram of the cross-section connection structure of the synthesis lower kettle body and the sealing upper kettle body of the present application is shown; Figure 3 The schematic diagram of the axial side structure of the lower synthesis kettle of the present application is shown; Figure 4 A schematic diagram of the connection structure between the rotating frame and the discharge pipe of the present application is shown; Figure 5 A schematic diagram of the connection structure of the vertical rotating rod, rotating frame and pinion gear of the present application is shown; Figure 6 A schematic diagram of the split structure of the vertical rotating rod, rotating frame and pinion gear of the present application is shown; Figure 7 A schematic diagram of the connection structure between the feeding pipe and the discharging pipe of the present application is shown; Figure 8 The schematic diagram of the cut-away structure of the feeding pipe and the discharging pipe of the present application is shown; Fig. 9 A schematic diagram of the auxiliary frame axial side structure of the present application is shown.

[0021] Reference numerals list 1. Synthetic lower kettle body; 101. Gear ring; 2. Sealed upper kettle body; 3. Motor; 4. Vertical rotating rod; 401. Mixing impeller; 402. Large gear; 5. Rotating frame; 501. Transmission hole; 6. Small gear; 7. Feeding pipe; 701. Annular outer pipe; 8. Discharge pipe; 801. Annular inner pipe; 802. Oblique blades; 9. Auxiliary frame; 901. Spiral blades. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1 to 9 : The present invention provides a device for continuously producing florasulam, comprising: a synthetic lower kettle body 1, a sealed upper kettle body 2, a motor 3, a vertical rotating rod 4, a rotating frame 5, a pinion 6, a feeding pipe 7, a discharge pipe 8 and an auxiliary frame 9; the top of the synthetic lower kettle body 1 is fixedly installed with a sealed upper kettle body 2 by bolts, the top of the sealed upper kettle body 2 is provided with a feeding port, and the bottom of the synthetic lower kettle body 1 is provided with a discharge port; the top of the sealed upper kettle body 2 is installed with a motor 3, the driving shaft of the motor 3 is connected with a vertical rotating rod 4, and the vertical rotating rod 4 is located in the synthetic lower kettle body 1 and the sealed upper kettle body 2; the bottom end of the vertical rotating rod 4 is provided with a mixing impeller 401, and the mixing impeller 401 is immersed in the material inside the synthetic lower kettle body 1; the top of the synthetic lower kettle body 1 is installed with a rotating frame 5, the vertical rotating rod 4 runs through the center of the rotating frame 5, and two pinions 6 are installed inside the rotating frame 5; the feeding pipe 7 is installed inside the sealed upper kettle body 2, the synthetic A discharge pipe 8 is installed inside the lower kettle body 1, and the top of the discharge pipe 8 is connected to the feeding pipe 7, and the discharge pipe 8 runs through the rotating frame 5; the outside of the discharge pipe 8 is connected to an auxiliary frame 9, and the auxiliary frame 9 is located in the synthetic lower kettle body 1, and the position of the auxiliary frame 9 is higher than the mixing impeller 401; a gear ring 101 is arranged on the top of the synthetic lower kettle body 1, and the rotating frame 5 is in rotational contact with the top side of the gear ring 101, and the pinion 6 is rotationally connected to the rotating frame 5, and the gear ring 101 is meshed with two pinion gears 6; a large gear 402 is arranged on the outside of the vertical rotating rod 4, and the large gear 402 is rotationally connected to the center of the rotating frame 5, and the large gear 402 is meshed with two pinion gears 6; the motor 3 drives the vertical rotating rod 4 to rotate, and the materials inside the synthetic lower kettle body 1 are mixed through the mixing impeller 401, and at the same time, the large gear 402 drives the pinion 6 to rotate, and the pinion 6 is affected by the meshing with the gear ring 101 to drive the rotating frame 5 to rotate around the vertical rotating rod 4 at a uniform speed.

[0024] In the disclosed embodiment, the feeding pipe 7 passes through the sealed upper kettle body 2, and an annular outer tube 701 is provided at the bottom of the feeding pipe 7. The cross section of the annular outer tube 701 is C-shaped, and the opening of the annular outer tube 701 faces downward. The bottom of the discharge pipe 8 is immersed in the material inside the synthesis lower kettle body 1, and an annular inner tube 801 is provided at the top of the discharge pipe 8. The cross section of the annular inner tube 801 is C-shaped, and the opening of the annular inner tube 801 faces upward. The annular inner tube 801 is rotatably connected to the annular outer tube 701. The feeding pipe 7 is connected to the discharge pipe 8 through the annular outer tube 701 and the annular inner tube 801. Two transmission holes 501 are provided inside the rotating frame 5. The discharge pipe 8 passes through the transmission hole 501. The discharge pipe 8 is provided with an inclined blade 802 near the bottom end, and the inclined blade 802 is inclined at 45 degrees. By adopting the above technical scheme, the added material required for generating florasulam reaches the discharge pipe 8 through the feeding pipe 7, and is finally mixed with the original material inside the synthesis lower kettle body 1 through the discharge pipe 8. While the rotating frame 5 rotates at a uniform speed around the vertical rotating rod 4, the rotating frame 5 drives the two discharge pipes 8 to rotate synchronously. The added material discharged by the discharge pipe 8 is distributed in a ring shape, so that the subsequent added material can be diffused into the original material inside the synthesis lower kettle body 1 more quickly, avoiding the occurrence of local aggregation. The inclined blades 802 push the material close to the inner wall of the synthesis lower kettle body 1 inward, so that the internal and external materials are mixed with each other, thereby improving the material mixing reaction effect.

[0025] Embodiment 2, on the basis of embodiment 1, the vertical rotation rod 4 passes through the end of the auxiliary frame 9, the auxiliary frame 9 is located at the top of the inclined blade 802, the vertical rotation rod 4 passes through the center of the auxiliary frame 9, and the external part of the auxiliary frame 9 is provided with spiral blades 901 in an arranged shape; By adopting the above technical solution, when the two discharge pipes 8 rotate at a uniform speed around the vertical rotating rod 4, the discharge pipes 8 drive the auxiliary frame 9 to rotate synchronously, and the spiral blades 901 are used to assist in mixing the materials, thereby further improving the material mixing rate, effectively shortening the time required for the preparation of bispyribac, and continuously preparing bispyribac, thereby improving the production efficiency of bispyribac.

[0026] The invention discloses a method for continuously producing florasulam, comprising the following steps: 1) First, the material is introduced into the synthesis lower kettle body 1 through the top feed port of the sealed upper kettle body 2, and the added material required to generate florasulam reaches the discharge pipe 8 through the feeding pipe 7, and finally is mixed with the original material in the synthesis lower kettle body 1 through the discharge pipe 8; 2) The motor 3 drives the vertical rotating rod 4 to rotate, and the materials inside the synthesis lower kettle body 1 are mixed through the mixing impeller 401. At the same time, the large gear 402 drives the small gear 6 to rotate. The small gear 6 is meshed with the gear ring 101 and drives the rotating frame 5 to rotate at a constant speed around the vertical rotating rod 4; 3) The rotating frame 5 drives the two discharge pipes 8 to rotate synchronously. The added materials discharged from the discharge pipes 8 are distributed in a ring shape to avoid the occurrence of local aggregation. The inclined blades 802 push the materials close to the inner wall of the synthesis lower kettle body 1 inward to mix the materials inside and outside. 4) The discharge pipe 8 drives the auxiliary frame 9 to rotate synchronously, and the spiral blade 901 is used to assist in mixing the materials. The successfully prepared bispyribac is discharged from the discharge port at the bottom of the synthesis lower kettle body 1, and the preparation process of bispyribac is completed.

[0027] The working principle of this embodiment is as follows: the material is introduced into the synthesis lower kettle body 1 through the top feed port of the sealed upper kettle body 2, and the additive material required for generating florasulam reaches the discharge pipe 8 through the feed pipe 7, and finally is mixed with the original material inside the synthesis lower kettle body 1 through the discharge pipe 8; the motor 3 drives the vertical rotating rod 4 to rotate, and the material inside the synthesis lower kettle body 1 is mixed through the mixing impeller 401, and at the same time, the large gear 402 drives the small gear 6 to rotate, and the small gear 6 is meshed with the gear ring 101 to drive the rotating frame 5 to rotate at a uniform speed around the vertical rotating rod 4; in this process, the rotating frame 5 drives the two discharge pipes 8 to rotate synchronously. The added materials discharged by the discharge pipe 8 are distributed in a ring shape to avoid the occurrence of local aggregation. The inclined blades 802 push the materials close to the inner wall of the synthesis lower kettle body 1 inward, so that the internal and external materials are mixed with each other, thereby improving the material mixing reaction effect. At the same time, the discharge pipe 8 drives the auxiliary frame 9 to rotate synchronously, and the spiral blades 901 are used to assist in mixing the materials, thereby further improving the material mixing rate, effectively shortening the time required for the preparation of bispyribac, and continuously preparing bispyribac, thereby improving the production efficiency of bispyribac. The successfully prepared bispyribac is discharged through the discharge port at the bottom of the synthesis lower kettle body 1.

[0028] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0029] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0030] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A device for continuously producing florasulam, comprising: A synthetic lower kettle body (1); a sealed upper kettle body (2) is fixedly mounted on the top of the synthetic lower kettle body (1) by bolts, a feed port is arranged on the top of the sealed upper kettle body (2), and a discharge port is arranged on the bottom of the synthetic lower kettle body (1); a motor (3) is mounted on the top of the sealed upper kettle body (2), a vertical rotating rod (4) is connected to the driving shaft of the motor (3), and the vertical rotating rod (4) is located inside the synthetic lower kettle body (1) and the sealed upper kettle body (2); a mixing impeller (401) is arranged at the bottom end of the vertical rotating rod (4), and the mixing impeller (401) is immersed in the material inside the synthetic lower kettle body (1); the invention is characterized in that The top of the synthesis lower kettle body (1) is equipped with a rotating frame (5), the vertical rotating rod (4) passes through the center of the rotating frame (5), and two small gears (6) are installed inside the rotating frame (5); a feeding pipe (7) is installed inside the sealing upper kettle body (2), and a discharge pipe (8) is installed inside the synthesis lower kettle body (1), the top of the discharge pipe (8) is connected to the feeding pipe (7), and the discharge pipe (8) passes through the rotating frame (5); the outside of the discharge pipe (8) is connected to an auxiliary frame (9), the auxiliary frame (9) is located in the synthesis lower kettle body (1), and the auxiliary frame (9) is located higher than the mixing impeller (401).

2. The device for continuous production of florasulam according to claim 1, characterized in that: A gear ring (101) is provided on the top of the synthesis lower kettle body (1), the rotating frame (5) is in rotational contact with the top side of the gear ring (101), the pinion gear (6) is rotationally connected to the rotating frame (5), and the gear ring (101) is meshed with the two pinion gears (6).

3. The device for continuous production of florasulam according to claim 1, characterized in that: A large gear (402) is disposed outside the vertical rotating rod (4), and the large gear (402) is rotatably connected to the center of the rotating frame (5), and the large gear (402) is meshed with two small gears (6).

4. The device for continuous production of florasulam according to claim 1, characterized in that: The feeding pipe (7) passes through the sealed upper kettle body (2); an annular outer pipe (701) is arranged at the bottom of the feeding pipe (7); the cross section of the annular outer pipe (701) is C-shaped, and the opening of the annular outer pipe (701) faces downward; the bottom of the discharge pipe (8) is immersed in the material inside the synthesis lower kettle body (1); an annular inner pipe (801) is arranged at the top of the discharge pipe (8); the cross section of the annular inner pipe (801) is C-shaped, and the opening of the annular inner pipe (801) faces upward.

5. The device for continuous production of florasulam according to claim 4, characterized in that: The annular inner tube (801) is rotatably connected to the annular outer tube (701), and the feeding tube (7) is connected to the discharge tube (8) via the annular outer tube (701) and the annular inner tube (801).

6. The device for continuous production of florasulam according to claim 1, characterized in that: Two transmission holes (501) are arranged inside the rotating frame (5), and the discharge pipe (8) passes through the transmission holes (501). An inclined blade (802) is arranged near the bottom end of the discharge pipe (8), and the inclined blade (802) is inclined at 45 degrees.

7. The device for continuous production of florasulam according to claim 6, characterized in that: The vertical rotation rod (4) passes through the end of the auxiliary frame (9), the auxiliary frame (9) is located at the top of the inclined blade (802), the vertical rotation rod (4) passes through the center of the auxiliary frame (9), and the outside of the auxiliary frame (9) is provided with spiral blades (901) in an array.

8. A method for preparing bispyribac using a device for continuous production of bispyribac according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) First, the material is introduced into the synthesis lower kettle (1) through the top feed port of the sealed upper kettle (2), and the additive material required for generating florasulam reaches the discharge pipe (8) through the feed pipe (7), and finally is mixed with the original material in the synthesis lower kettle (1) through the discharge pipe (8); 2) The motor (3) drives the vertical rotating rod (4) to rotate, and the materials in the synthesis lower kettle body (1) are mixed through the mixing impeller (401). At the same time, the large gear (402) drives the small gear (6) to rotate. The small gear (6) is meshed with the gear ring (101) and drives the rotating frame (5) to rotate at a constant speed around the vertical rotating rod (4); 3) The rotating frame (5) drives the two discharge pipes (8) to rotate synchronously, and the added materials discharged from the discharge pipes (8) are distributed in a ring shape to avoid the occurrence of local aggregation. The inclined blades (802) push the materials close to the inner wall of the synthesis lower kettle body (1) inward to mix the materials inside and outside. 4) The discharge pipe (8) drives the auxiliary frame (9) to rotate synchronously, and the spiral blades (901) are used to assist in mixing the materials. The successfully prepared bispyribac is discharged through the discharge port at the bottom of the synthesis lower kettle body (1), thereby completing the preparation process of bispyribac.

Images