Uniform baking device for bread processing and production

Abstract

The uniform baking device for bread processing and production comprises a baking box shell and a fixing box, electric push rods are fixedly connected to the left side and the right side of the inner wall of the baking box shell, sleeves are fixedly connected to the output ends of the electric push rods, and driving wheels penetrate through the sleeves and are rotationally connected to the interiors of the sleeves; the adjacent sides of the outer walls of the driving wheels penetrate through and are fixedly connected with driven gears. According to the device, firstly, a driving motor is started to drive a driving shaft to drive a driving pinion to rotate, the driving pinion drives a rack chain to rotate, then the rack chain drives a driven bull gear to rotate, then the driven bull gear drives a rotating shaft to rotate, and then the rotating shaft rotates to drive a supporting rod to rotate; and then the supporting rod and the rotating sleeve are rotationally connected, so that the bread in the placing frame can be kept at the bottom of the supporting rod, the stability of the bread on the placing frame can be kept, and uniform baking of the bread can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of baking devices, and in particular to a uniform baking device for bread processing and production. Background Art

[0002] Bread, also known as flour, is a food made from grains (usually wheat) ground and heated. It is made from wheat flour as the main raw material, yeast, eggs, oil, sugar, salt and other auxiliary materials, and water is added to make dough. It is processed through processes such as segmentation, shaping, proofing, baking and cooling. The nutritional value of bread is an important source of carbohydrates. It also contains certain proteins, fibers, vitamins and minerals. Whole wheat or multi-grain bread is relatively more nutritious, which helps digestion and maintains energy levels. The baking device can gelatinize the starch in the dough and coagulate the protein by providing a suitable temperature during bread processing. In this process, the moisture inside the bread is gradually evaporated to form a soft tissue structure. Modern baking devices (such as rotary ovens and belt ovens) make it possible to mass produce bread, greatly improving production efficiency and consistency, and meeting large-scale demand.

[0003] At present, the existing baking device can bake bread in the bread production process, but there are still many defects: For example, Chinese patent number CN112314644A discloses a bread production device, and specifically discloses: the baking device includes a baking tunnel arranged in a closed loop, and a baking turntable carrying the baking tunnel; a plurality of carrying containers for placing bread are arranged in the baking tunnel, and the carrying containers are detachably connected to the baking tunnel; and a plurality of openings corresponding to each of the carrying containers are formed on the baking tunnel. The dough is kneaded by a dough kneading device for full-automatic dough mixing and kneading, and then the kneaded dough is moved to the baking device by a manipulator for baking. By setting a plurality of carrying containers on the baking tunnel, continuous baking can be achieved. Although the patent can realize the baking of bread by a manipulator, the baking of bread cannot be observed. When taking out bread, only one bread can be taken out, and the residual temperature inside the baking tunnel will cause the remaining bread to be over-baked, and the baking of the bread cannot be guaranteed to be uniform, which is not conducive to the baking of bread. Summary of the invention

[0004] One purpose of the present invention is to provide a device for uniformly baking bread processing and production. The present invention first starts a driving motor to drive a driving shaft to drive a driving pinion to rotate, and then drives a rack chain to rotate through the driving pinion, and then drives a driven large gear to rotate through the rack chain, and then drives the rotating shaft to rotate through the driven large gear, and then drives the support rod to rotate through the rotation of the rotating shaft, and then the support rod and the rotating sleeve are connected by rotation, so that the bread inside the placement rack can be kept at the bottom of the support rod, the stability of the bread on the placement rack can be maintained, and the baking of the bread can be guaranteed to be uniform. The movable rack, the placement rack, the slider, the slide groove, the ramp plate, the leakage hole, and the drain pipe can cooperate with each other to transmit and collect the grease generated during the baking of the bread, and the grease can be quickly discharged. The rack can be cleaned and replaced quickly, which speeds up the production efficiency of bread. The movable rack, the rack, the slider, the slide groove, the ramp plate, the leakage hole and the drain pipe cooperate with each other to transfer and collect the grease generated when baking the bread. The rack can be removed by pulling the handle at the front end of the rack. The sliders on both sides of the rack and the slide grooves on the left and right sides of the inner wall of the movable rack can assist in taking and placing the rack. The rack that has been baked can be taken out and replaced with a new one, which improves work efficiency. When the grease at the bottom of the movable rack needs to be cleaned, the grease can be discharged through the drain pipe and the solenoid valve set at the front end of the movable rack. The grease can be cleaned quickly and the rack can be replaced quickly, which speeds up the production efficiency of bread.

[0005] A bread processing and uniform baking device according to an embodiment of the present invention comprises a baking oven shell and a fixing box, the left and right sides of the inner wall of the baking oven shell are fixedly connected to electric push rods, the output ends of the electric push rods are fixedly connected to sleeves, a driving wheel is passed through and rotatably connected to the inside of the sleeve, a driven gear is passed through and fixedly connected to the adjacent side of the outer wall of the driving wheel, a driving belt 1 and a driving belt 2 are passed through and rotatably connected to the outer wall of the driving wheel, a driving motor is fixedly connected to the rear side of the fixed box, a driving shaft is passed through and fixedly connected to the output end of the driving motor, and the outer diameter of the driving shaft is passed through and fixedly connected to the main The driving pinion is meshed with a rack chain, the inner wall of the front end of the rack chain is meshed with a driven large gear, a rotating shaft is passed through and fixedly connected to the inside of the driven large gear, the outer diameter of the rotating shaft passes through and fixedly connected to the driving gear, the left and right sides of the outer diameter of the rotating shaft pass through and fixedly connected to connecting sleeves, the outer diameter of the connecting sleeves are fixedly connected to a number of fixed rods, support rods are fixedly connected between the left and right adjacent fixed rods, the left and right sides of the outer diameter of the support rods pass through and rotatably connected to rotating sleeves, the bottom of the rotating sleeves are fixedly connected to connecting rods, and movable frames are fixedly connected between the connecting rods.

[0006] Furthermore, the inner wall of the transmission belt 1 is rotatably connected to a driven wheel 1, and the adjacent side of the driven wheel 1 is fixedly connected to a fan 1.

[0007] Furthermore, the inner wall of the second transmission belt is rotatably connected to a second driven wheel, and the adjacent side of the second driven wheel is fixedly connected to a second fan.

[0008] Furthermore, drainage pipes are passed through and fixedly connected to both left and right sides of the middle of the front end of the movable frame, and slide grooves are passed through and arranged on both left and right sides of the front end of the movable frame, and sliders are arranged and slidably connected inside the slide grooves.

[0009] Furthermore, a ramp plate is passed through and fixedly connected inside the movable frame, a placement frame is passed through and arranged at the top of the movable frame, and evenly distributed liquid leakage holes are passed through and arranged at the bottom of the inner wall of the placement frame.

[0010] Furthermore, a glass door is pierced through and hinged at the front end of the oven shell, evenly distributed leakage holes are pierced through and arranged at the top of the movable rack, and two sliders are fixedly connected to the left and right sides of the placement rack.

[0011] Furthermore, the left side of the rotating shaft passes through and is rotatably connected to the baking oven shell, a temperature sensor is fixedly connected to the middle of the top of the inner wall of the baking oven shell, and baking heating lamps are fixedly connected to the front and rear sides of the top of the inner wall of the baking oven shell.

[0012] Furthermore, a glass door is passed through and hinged at the front end of the oven shell, one end of two fixing members is fixedly connected to the middle of the right side of the oven shell, and a fixing box is fixedly connected between the right sides of the fixing members.

[0013] Furthermore, the left side of the rotating shaft passes through and is rotatably connected to the baking oven shell, the left side of the front end of the inner wall of the fixed box passes through and is rotatably connected to the rotating shaft, and the right rear end of the inner wall of the fixed box passes through and is rotatably connected to the rotating sleeve.

[0014] Furthermore, a liquid storage box is arranged inside the movable frame, and a handle is fixedly connected to the middle part of the front end of the placement frame.

[0015] The beneficial effects of the present invention are:

[0016] 1. First, start the driving motor to drive the driving shaft to drive the active small gear to rotate, and the active small gear drives the rack chain to rotate, and then the rack chain drives the driven large gear to rotate, and then the driven large gear drives the rotating shaft to rotate, and the rotation of the rotating shaft can drive the active gear to rotate. When the bread is baked, both sides of the bread need to be baked to prevent uneven baking of the two sides of the bread. The starting signal is transmitted to the electric push rod through the temperature sensor, and the electric push rod drives the driven gear to move downward to mesh with the active gear. The driven gear follows the active gear to rotate, which can drive the active wheel to rotate. The active wheel cooperates with the transmission belts and the driven wheels on both sides to drive the fan to rotate, and the hot air of the baking heating lamp is blown to both sides of the bread to make the baking more uniform. Then, the support rod is driven to rotate by rotating the rotating shaft, and then the support rod and the rotating sleeve are connected to each other, so that the bread inside the rack can be kept at the bottom of the support rod, which can keep the bread on the rack stable and ensure uniform baking of the bread.

[0017] Second, the movable rack, the placement rack, the slider, the slide groove, the ramp plate, the leakage hole and the drain pipe cooperate with each other to transfer and collect the grease generated during bread baking. The placement rack can be removed by pulling the handle at the front end of the placement rack. The sliders on both sides of the placement rack and the slide grooves on the left and right sides of the inner wall of the movable rack can assist in taking and placing the placement rack. The baking-finished placement rack can be taken out and replaced with a new one, which can improve work efficiency. When the grease at the bottom of the movable rack needs to be cleaned, the grease can be discharged through the drain pipe and the solenoid valve arranged at the front end of the movable rack. The grease can be cleaned quickly, and the placement rack can also be replaced quickly, thereby speeding up the production efficiency of bread. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 The present invention provides a schematic diagram of the cross-sectional structure of a baking oven shell of a bread processing and uniform baking device.

[0020] Figure 2 The present invention is a schematic diagram of the overall structure of a bread processing and uniform baking device.

[0021] Figure 3 This is a schematic diagram of the internal structure of a baking oven shell of a bread processing and uniform baking device proposed by the present invention.

[0022] Figure 4 A schematic diagram of a blowing component of a bread processing and uniform baking device proposed by the present invention.

[0023] Figure 5 This is a schematic diagram of a driving and baking component of a bread processing and production uniform baking device proposed by the present invention.

[0024] Figure 6 This is a schematic diagram of the split structure of a movable frame of a bread processing and uniform baking device proposed by the present invention.

[0025] Figure 7 The present invention provides a schematic diagram of the three-dimensional structure of a movable frame of a bread processing and uniform baking device.

[0026] Figure 8 This is a schematic diagram of a driving component of a bread processing and uniform baking device proposed by the present invention.

[0027] Fig. 9 This is a schematic diagram of the partial structure of a blowing component of a bread processing and uniform baking device proposed by the present invention.

[0028] In the figure: 1. oven shell; 2. glass door; 3. fixing box; 4. rotating shaft; 5. fan 2; 6. support rod; 7. rotating sleeve; 8. connecting rod; 9. placement rack; 10. leakage hole; 11. fixing rod; 12. connecting sleeve; 13. movable rack; 14. driven large gear; 15. rack chain; 16. driving small gear; 17. driving shaft; 18. driving motor; 19. baking heating lamp; 20. slide; 21. drain pipe; 22. ramp plate; 23. slider; 24. fixing piece; 25. driving gear; 26. driven gear; 27. electric push rod; 28. transmission belt 2; 29. ​​driving wheel; 30. fan 1; 31. transmission belt 1; 32. driven wheel 1; 33. driven wheel 2; 34. temperature sensor; 35. sleeve. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0030] refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9As shown, a bread processing and production uniform baking device comprises a baking oven shell 1 and a fixing box 3, the left and right sides of the inner wall of the baking oven shell 1 are fixedly connected with electric push rods 27, the output ends of the electric push rods 27 are fixedly connected with sleeves 35, the inside of the sleeve 35 penetrates and is rotatably connected with a driving wheel 29, the adjacent side of the outer wall of the driving wheel 29 penetrates and is fixedly connected with a driven gear 26, the outer wall of the driving wheel 29 penetrates and is rotatably connected with a transmission belt 1 31 and a transmission belt 28, the inner wall of the transmission belt 1 31 is rotatably connected with a driven wheel 1 32, and the driven wheel 1 33 is rotatably connected with the driven wheel 1 34. 2 adjacent sides are fixedly connected with a fan 1 30, the inner wall of the transmission belt 28 is rotatably connected with a driven wheel 2 33, and the adjacent sides of the driven wheel 2 33 are fixedly connected with a fan 2 5, the rear side of the interior of the fixed box 3 is fixedly connected with a driving motor 18, and the driving motor 18 can play a driving role on the baking component. The output end of the driving motor 18 passes through and is fixedly connected with a driving shaft 17, and the driving pinion 16 can be driven to rotate through the driving shaft 17. The outer diameter of the driving shaft 17 passes through and is fixedly connected with the driving pinion 16, and the driving pinion 16 is meshed and connected with a gear The inner wall of the front end of the rack chain 15 is meshed with a driven large gear 14, and the driven large gear 14 is penetrated and fixedly connected with a rotating shaft 4 inside. The outer diameter of the rotating shaft 4 is penetrated and fixedly connected with a driving gear 25. The docking effect of the driving gear 25 and the driven gear 26 is the docking method of docking gears in the prior art. It will not be elaborated here, and there will be no situation where the meshing cannot occur. The outer diameter of the rotating shaft 4 is penetrated and fixedly connected with a connecting sleeve 12 on both sides, and the outer diameter of the connecting sleeve 12 is fixedly connected with a plurality of fixed rods 11, and the left and right adjacent fixed rods 1 1 is fixedly connected with a support rod 6, and a rotating sleeve 7 is penetrated and rotatably connected on both sides of the outer diameter of the support rod 6. The bottom end of the rotating sleeve 7 is fixedly connected with a connecting rod 8, and a movable frame 13 is fixedly connected between the connecting rods 8. The driving motor 18 is started to drive the rotating shaft 4 to rotate through the driving shaft 17, and then the support rod 6 is driven to rotate through the rotating shaft 4. The rotating connection between the support rod 6 and the rotating sleeve 7 can drive a plurality of placement racks 9 to move, and the placement racks 9 can be placed in a horizontal position without affecting the uniform baking of the bread.

[0031] refer to Figure 1 , Figure 6 , Figure 7As shown, a drain pipe 21 is penetrated and fixedly connected to the left and right sides of the middle of the front end of the movable frame 13, a slide groove 20 is penetrated and arranged on the left and right sides of the front end of the movable frame 13, and a slider 23 is arranged and slidably connected inside the slide groove 20. The sliding connection between the slide groove 20 and the slider 23 can play a role in quickly taking and placing the placement rack 9. A ramp plate 22 is penetrated and fixedly connected inside the movable frame 13, and the ramp plate 22 can transfer the grease dripping from the leakage hole 10 to the front end of the movable frame 13. The top of the movable frame 13 is penetrated and arranged on the placement rack 9, and the placement rack 9 is placed. The bottom end of the inner wall of the rack 9 is penetrated and provided with evenly distributed leakage holes 10, and the top of the movable rack 13 is penetrated and provided with evenly distributed leakage holes 10, which can play a role in the transmission of grease. Two sliders 23 are fixedly connected on the left and right sides of the placement rack 9. The sliders 23 on both sides of the placement rack 9 and the slide grooves 20 on the left and right sides of the inner wall of the movable rack 13 can play a role in assisting the placement of the placement rack 9. A liquid storage box is arranged inside the movable rack 13, and a handle is fixedly connected to the middle of the front end of the placement rack 9, which can play a role in assisting the placement of the placement rack 9.

[0032] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a temperature sensor 34 is fixedly connected to the middle of the top of the inner wall of the baking oven shell 1, and baking heating lamps 19 are fixedly connected to the front and rear sides of the top of the inner wall of the baking oven shell 1. The baking heating lamps 19 can play a role in baking bread. A glass door 2 is penetrated and hinged at the front end of the baking oven shell 1. The glass door 2 can be used to observe the baking conditions inside the baking oven shell 1. Two ends of fixing parts 24 are fixedly connected to the middle of the right side of the baking oven shell 1. The fixing parts 24 can play a connecting role between the baking oven shell 1 and the fixing box 3. A fixing box 3 is fixedly connected between the right sides of the fixing parts 24. The fixing box 3 can play a supporting and fixing role of the driving component. The left side of the rotating shaft 4 penetrates and is rotatably connected to the baking oven shell 1, the left side of the inner wall of the fixing box 3 penetrates and is rotatably connected to the rotating shaft 4, and the right rear end of the inner wall of the fixing box 3 penetrates and is rotatably connected to the rotating sleeve 7.

[0033] Working principle:

[0034] When bread needs to be baked, first open the glass door 2 of the bread baking oven, place the bread on the top of the rack 9 in sequence, and then close the glass door 2. Then start the baking heating lamp 19, the electric heating tube 5 on the inner wall of the baking oven, and the driving motor 18 in sequence. The start of the driving motor 18 can drive the driving shaft 17 to rotate, and the rotation of the driving shaft 17 can drive the driving pinion 16 to rotate. The rotation of the driving pinion 16 can mesh with the rack chain 15, and can drive the rack chain 15 to rotate. The rotation of the rack chain 15 can drive the driven large gear 14 on the inner wall of the front end of the rack chain 15 to mesh and rotate, and the rotation of the driven large gear 14 can drive the rotating shaft 4 to rotate, and the rotation of the rotating shaft 4 can drive the driving gear 25 to rotate. When the bread is baked, When it is necessary to bake both sides of the bread to prevent uneven baking of both sides of the bread, the temperature sensor 34 transmits the start signal to the electric push rod 27, and the electric push rod 27 drives the driven gear 26 to move downward and mesh with the driving gear 25. The driven gear 26 follows the driving gear 25 to rotate, which can drive the driving wheel 29 to rotate. The driving wheel 29 cooperates with the transmission belts and the driven wheels on both sides to drive the fan to rotate, and the hot air of the baking heating lamp is blown to both sides of the bread to make the baking more uniform. The rotation of the rotating shaft 4 can drive the connecting sleeve 12 sleeved on the outer diameter of the rotating shaft 4 to rotate, and then the connecting sleeve 12 rotates. The movement can drive several fixed rods 11 fixed on the outer diameter of the connecting sleeve 12 to rotate, and the support rod 6 fixed between the top ends of the left and right adjacent fixed rods 11 can be rotated, and the movable frame 13 and the placement frame 9 can be driven to move through the rotating sleeve 7 and the connecting rod 8 set on the support rod 6. Due to the rotation connection between the rotating sleeve 7 and the support rod 6, it is ensured that the placement frame 9 can keep the top end of the placement frame 9 facing upward while rotating, and the bread on the top end of the placement frame 9 is in a stable state, which will not affect the baking of the bread and ensure the uniform baking of the bread. During the baking process of the placement frame 9, the bread can be placed on the top end of the inner wall of the placement frame 9 through the leakage hole 10 set on the top end of the inner wall of the placement frame 9. The grease generated by bread baking is discharged into the movable rack 13, and then the ramp plate 22 can assist in the transmission of the grease. When the bread baking is finished, the placement rack 9 can be removed by pulling the handle at the front end of the placement rack 9. The sliders 23 on both sides of the placement rack 9 and the slide grooves 20 on the left and right sides of the inner wall of the movable rack 13 can assist in taking and placing the placement rack 9. The baking-finished placement rack 9 can be taken out and replaced with a new one, which can improve work efficiency. When the grease at the bottom of the movable rack 13 needs to be cleaned, the grease can be discharged through the drain pipe 21 and the solenoid valve set at the front end of the movable rack 13.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bread processing and production uniform baking device, characterized in that: The invention comprises a baking oven shell (1) and a fixing box (3), wherein the left and right sides of the inner wall of the baking oven shell (1) are fixedly connected with electric push rods (27), the output ends of the electric push rods (27) are fixedly connected with sleeves (35), a driving wheel (29) is passed through the sleeve (35) and is rotatably connected, the adjacent side of the outer wall of the driving wheel (29) is passed through and is fixedly connected with a driven gear (26), the outer wall of the driving wheel (29) is passed through and is rotatably connected with a first transmission belt (31) and a second transmission belt (28), the rear side of the inner wall of the fixing box (3) is fixedly connected with a driving motor (18), the output end of the driving motor (18) is passed through and is fixedly connected with a driving shaft (17), the outer diameter of the driving shaft (17) is passed through and is fixedly connected with a driving pinion (16), the driving pinion (16) is meshedly connected with a rack chain (15), the inner wall of the front end of the rack chain (15) is meshedly connected with a driven large gear (14), a rotating shaft (4) is passed through and fixedly connected inside the driven large gear (14), the outer diameter of the rotating shaft (4) is passed through and fixedly connected with a driving gear (25), the left and right sides of the outer diameter of the rotating shaft (4) are passed through and fixedly connected with a connecting sleeve (12), the outer diameter of the connecting sleeve (12) is fixedly connected with a plurality of fixed rods (11), support rods (6) are fixedly connected between the left and right adjacent fixed rods (11), the left and right sides of the outer diameter of the support rod (6) are passed through and rotatably connected with a rotating sleeve (7), the bottom end of the rotating sleeve (7) is fixedly connected with a connecting rod (8), and the connecting rods (8) are fixedly connected with a movable frame (13).

2. A bread processing and uniform baking device according to claim 1, characterized in that: The inner wall of the transmission belt 1 (31) is rotatably connected to a driven wheel 1 (32), and the adjacent side of the driven wheel 1 (32) is fixedly connected to a fan 1 (30).

3. The bread processing and uniform baking device according to claim 1, characterized in that: The inner wall of the second transmission belt (28) is rotatably connected to a second driven wheel (33), and the adjacent side of the second driven wheel (33) is fixedly connected to a second fan (5).

4. The uniform baking device for bread processing and production according to claim 1, characterized in that: A liquid discharge pipe (21) is passed through and fixedly connected to both left and right sides of the front middle of the movable frame (13), a slide groove (20) is passed through and arranged on both left and right sides of the front end of the movable frame (13), and a slider (23) is arranged and slidably connected inside the slide groove (20).

5. The bread processing and uniform baking device according to claim 1, characterized in that: A ramp plate (22) is passed through and fixedly connected to the interior of the movable frame (13); a placement frame (9) is passed through and arranged at the top end of the movable frame (13); and evenly distributed liquid leakage holes (10) are passed through and arranged at the bottom end of the inner wall of the placement frame (9).

6. The bread processing and uniform baking device according to claim 5, characterized in that: The top of the movable frame (13) is penetrated and provided with evenly distributed liquid leakage holes (10), and the left and right sides of the placement frame (9) are fixedly connected with two sliding blocks (23).

7. The uniform baking device for bread processing and production according to claim 1, characterized in that: A temperature sensor (34) is fixedly connected to the middle of the top of the inner wall of the baking oven shell (1), and baking heating lamps (19) are fixedly connected to both the front and rear sides of the top of the inner wall of the baking oven shell (1).

8. The bread processing and uniform baking device according to claim 1, characterized in that: A glass door (2) is passed through and hingedly connected to the front end of the oven shell (1); one end of two fixing members (24) is fixedly connected to the middle of the right side of the oven shell (1); and a fixing box (3) is fixedly connected between the right sides of the fixing members (24).

9. The bread processing and uniform baking device according to claim 1, characterized in that: The left side of the rotating shaft (4) passes through and is rotatably connected to the outer shell of the baking oven (1); the left side of the front end of the inner wall of the fixed box (3) passes through and is rotatably connected to the rotating shaft (4); the right side of the rear end of the inner wall of the fixed box (3) passes through and is rotatably connected to the rotating sleeve (7).

10. The uniform baking device for bread processing and production according to claim 5, characterized in that: A liquid storage box is arranged inside the movable frame (13), and a handle is fixedly connected to the middle of the front end of the placement frame (9).

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