Bubble cleaning machine for smelly mandarin fish

By designing a bubble cleaning machine with a filter box, filter plate, cleaning motor and lifting components, the problem of difficult to clean fish scale residues in traditional cleaning machines is solved, and automated cleaning and efficient production are achieved.

CN223286512UActive Publication Date: 2025-09-02ANHUI JIANGZHOU FOOD TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422765457.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-09-02
Estimated Expiration
2034-11-13

AI Technical Summary

Technical Problem

After cleaning the stinky mandarin fish in a traditional bubble cleaning machine, fish scales and impurities remain at the bottom of the cleaning box and are difficult to clean, resulting in time-consuming and labor-intensive cleaning and reducing production efficiency.

Method used

A stinky mandarin fish bubble cleaning machine including a cleaning box, a filter box, a filter plate, a cleaning motor, a lifting component and a spraying component is designed. The filtering water is reused through the filter box and a filter plate, and the cleaning motor drives the filter mesh shovel to clean the fish scales. The lifting component is convenient for the conveying component to be removed, and the spraying component realizes high-pressure water flushing.

Benefits of technology

The filtration and reuse of water in the cleaning box is realized, and the fish scales are automatically cleaned, which simplifies the cleaning process of the bottom of the cleaning box and improves production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a bubble cleaning machine for smelly mandarin fish. The bubble cleaning machine comprises a mounting plate, a cleaning box assembly is installed on the top face of the installation plate, a cleaning assembly is installed on the bottom face of an inner cavity of the cleaning box assembly, an auxiliary cleaning assembly is installed in the middle of the inner cavity of the cleaning box assembly, a conveying assembly is installed on the upper portion of the inner cavity of the cleaning box assembly, and a spraying assembly is installed on the top face of the conveying assembly. The cleaning box assembly comprises a cleaning box, the top face of the mounting plate is fixedly connected with the cleaning box, one end of the bottom face of the cleaning box is fixedly connected with an inclined hopper, an inner cavity of the inclined hopper communicates with an inner cavity of the cleaning box, and the opposite face of the inclined hopper is fixedly connected with a sealing plate through bolts. A filter box is fixedly connected to one side of the cleaning box and located on one side of the backflow hole. According to the smelly mandarin fish cleaning device, through mutual cooperation of the cleaning box assembly, the cleaning assembly, the auxiliary cleaning assembly, the conveying assembly, the spraying assembly and the lifting assembly, smelly mandarin fish can be cleaned.
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Description

Technical Field

[0001] The utility model relates to the technical field of smelly mandarin fish cleaning, in particular to a bubble cleaning machine for smelly mandarin fish. Background Art

[0002] When a traditional bubble cleaning machine is used to clean smelly mandarin fish, first, the smelly mandarin fish are placed one by one on one end of a conveyor belt. When placing the fish, the conveyor motor is started, which drives the conveyor belt to rotate, thereby moving the smelly mandarin fish in the cleaning tank. When the smelly mandarin fish moves in the water tank, the vortex fan conveys air into the cleaning tank, causing the water in the cleaning tank to form bubbles. At this time, the bubbles drive the smelly mandarin fish to roll in the cleaning tank, thereby achieving the cleaning of the smelly mandarin fish.

[0003] After the bubble cleaning machine cleans the stinky mandarin fish, the fish scales and impurities on the surface of the stinky mandarin fish that have not been cleaned will remain in the cleaning box. With the long-term use of the bubble cleaning machine, a large amount of fish scales and impurities will accumulate at the bottom of the cleaning box. At this time, in order not to affect the normal operation of the bubble cleaning machine, the staff needs to clean its bottom. During cleaning, in order to avoid obstruction by the conveying equipment, the staff cannot fully clean its bottom. At this time, the staff needs to remove the conveying equipment from the cleaning box first, and then clean its bottom. After the cleaning is completed, the conveying equipment needs to be installed in the cleaning box, which results in that cleaning the cleaning box is not only time-consuming and labor-intensive, but also increases the labor of the staff. At the same time, it also reduces the overall production efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a bubble cleaning machine for smelly mandarin fish, which solves the problems mentioned in the background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The top surface of the cleaning box is fixed with the cleaning box, and one end of the cleaning box is connected with the cleaning box to the cleaning box.

[0007] Furthermore, the cleaning assembly includes a cleaning motor, a main sprocket and a slave sprocket. The main sprocket and the slave sprocket are rotatably connected on both sides of the inner wall of the cleaning box. The main sprocket is rotatably connected to the slave sprocket through a chain. A filter shovel plate is fixedly connected between the two groups of chains. A cleaning motor is fixedly connected to one side of the cleaning box, and the output shaft end of the cleaning motor is rotatably connected to the main sprocket through a worm and a worm wheel.

[0008] Furthermore, the auxiliary cleaning component includes a blower, one side of the cleaning box is fixedly connected to the blower, the output end of the blower is fixedly connected to the exhaust pipe, one end of the exhaust pipe is fixedly connected to a wind box, one side of the cleaning box is fixedly connected to the wind box, one side of the wind box is fixedly connected to the air duct at equal intervals, and the outer surface of the air duct is fixedly connected to the exhaust duct at equal intervals.

[0009] Furthermore, the conveying assembly includes a conveying frame, the middle part of the inner cavity of the conveying frame is rotatably connected to a conveying roller, the outer surface of the conveying roller is installed with a mesh conveyor belt, one side of the conveying frame is fixedly connected to a conveying motor, and the output shaft end of the conveying motor is connected to one of the conveying rollers through a worm and a worm gear.

[0010] Furthermore, the spray assembly includes a water pump and a vertical rod, the two ends of the top surface of the conveying frame are respectively fixedly connected with the vertical rod, the top surface of the vertical rod is fixedly connected with a water diversion box, and nozzles are fixedly connected at equal intervals between the two groups of water diversion boxes. One side of the cleaning box is fixedly connected with a water pump, the input end of the water pump is connected to the filter box through a water inlet pipe, and the output end of the water pump is connected to the inner cavity of the water diversion box through a hose.

[0011] Furthermore, the lifting assembly includes a vertical pole, and the top surface of the mounting plate and the two sides of the cleaning box are fixedly connected with the vertical poles respectively. A lifting groove is provided on the upper part of one side of the vertical pole, and a lifting threaded rod is rotatably connected in the lifting groove. The outer surface of the lifting threaded rod is threadedly connected to the lifting frame, one end of the lifting frame is fixedly connected to the conveying frame, the top surface of the vertical pole is fixedly connected to the lifting motor, and the output end of the lifting motor is fixedly connected to the lifting threaded rod.

[0012] The utility model provides a bubble cleaning machine for smelly mandarin fish. Compared with the existing technology, it has the following beneficial effects:

[0013] 1. Through the cooperation of the filter box and the filter plate in the cleaning box, the water in the cleaning box can be filtered and reused;

[0014] 2. The cleaning motor drives the main sprocket to rotate. When the main sprocket rotates, the slave sprocket drives the chain to rotate. When the chain rotates, it drives the filter shovel to rotate in and out. When the filter shovel rotates, the fish scales at the bottom of the cleaning box cavity can be cleaned into the inclined bucket, which is convenient for centralized processing later.

[0015] 3. The stinky mandarin fish is transported by the conveying component. During transportation, the blower in the auxiliary cleaning component cooperates with the air duct to inject high-pressure air from the outside into the cleaning box, causing the water in the cleaning box to surge upward, thereby blowing the stinky mandarin fish on the conveying component upward. At this time, under the action of the spray component, the high-pressure water flushes the stinky mandarin fish downward, thus completing the cleaning of the stinky mandarin fish.

[0016] 4. The lifting motor drives the lifting threaded rod to rotate. When the lifting threaded rod rotates, it drives the lifting frame to move upward. When the lifting frame moves upward, it drives the conveying assembly to move upward, thereby removing the conveying assembly from the cleaning box, which is convenient for later maintenance and cleaning of the bottom of the cleaning box cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 Shows a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 Shows a schematic structural diagram of the utility model from another perspective;

[0020] Figure 3 Shows a schematic diagram of the structure of the lifting assembly of the utility model;

[0021] Figure 4 Shows a schematic structural diagram of the spray assembly of the utility model;

[0022] Figure 5 Shows a schematic structural diagram of the conveying assembly of the utility model;

[0023] Figure 6 Shows a schematic diagram of the partial cross-section structure of the cleaning box assembly of the utility model;

[0024] Figure 7 It shows a schematic structural diagram of the cleaning box assembly of the utility model from another perspective;

[0025] As shown in the figure: 1. Mounting plate; 2. Cleaning box assembly; 21. Cleaning box; 22. Inclined bucket; 23. Sealing plate; 24. Return hole; 25. Filter box; 26. Filter plate; 27. Auxiliary unloading plate; 3. Cleaning assembly; 31. Cleaning motor; 32. Main sprocket; 33. Slave sprocket; 34. Chain; 35. Filter shovel plate; 4. Auxiliary cleaning assembly; 41. Blower; 42. Exhaust pipe; 43. Wind box; 44. Air duct; 45. Exhaust duct; 5. Conveying assembly; 51. Conveying frame; 52. Conveying roller; 53. Conveying belt; 54. Conveying motor; 6. Spraying assembly; 61. Water pump; 62. Vertical rod; 63. Water distribution box; 64. Spray head; 65. Water inlet pipe; 66. Hose; 7. Lifting assembly; 71. Vertical rod; 72. Lifting trough; 73. Lifting threaded rod; 74. Lifting frame; 75. Lifting motor. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] Example 1

[0028] In order to solve the technical problems in the background technology, the following stinky mandarin fish bubble cleaning machine is provided:

[0029] Combine Figure 1-Figure 7As shown, the utility model provides a smelly mandarin fish bubble cleaning machine, including a mounting plate 1; a cleaning box assembly 2 is installed on the top surface of the mounting plate 1, a cleaning assembly 3 is installed on the bottom surface of the inner cavity of the cleaning box assembly 2, an auxiliary cleaning assembly 4 is installed in the middle of the inner cavity of the cleaning box assembly 2, a conveying assembly 5 is installed on the upper part of the inner cavity of the cleaning box assembly 2, a spraying assembly 6 is installed on the top surface of the conveying assembly 5, and a lifting assembly 7 is installed on the top surface of the mounting plate 1 and on both sides of the cleaning box assembly 2, one end of the lifting assembly 7 is connected to one side of the conveying assembly 5; cleaning The washing box assembly 2 includes a washing box 21, and the top surface of the mounting plate 1 is fixedly connected to the washing box 21, and one end of the bottom surface of the washing box 21 is fixedly connected to an inclined bucket 22, and the inner cavity of the inclined bucket 22 is connected to the inner cavity of the washing box 21. A sealing plate 23 is fixedly connected to the opposite side of the inclined bucket 22 by bolts, and a reflux hole 24 is provided on one side of the washing box 21. A filter box 25 is fixedly connected to one side of the washing box 21 and located on the side of the reflux hole 24, and a filter plate 26 is slidably connected in the filter box 25. An auxiliary unloading plate 27 is fixedly connected to one end of the inner cavity of the washing box 21.

[0030] By cooperating with the filter box 25 and the filter plate 26 in the cleaning box 21 , the water in the cleaning box 21 can be filtered and reused.

[0031] In this embodiment, the cleaning assembly 3 includes a cleaning motor 31, a main sprocket 32 ​​and a slave sprocket 33. The main sprocket 32 ​​and the slave sprocket 33 are rotatably connected to both sides of the inner wall of the cleaning box 21. The main sprocket 32 ​​is rotatably connected to the slave sprocket 33 through a chain 34. A filter shovel plate 35 is fixedly connected between the two sets of chains 34. One side of the cleaning box 21 is fixedly connected to the cleaning motor 31, and the output shaft end of the cleaning motor 31 is rotatably connected to the main sprocket 32 ​​through a worm and a worm wheel.

[0032] The cleaning motor 31 drives the main sprocket 32 ​​to rotate. When the main sprocket 32 ​​rotates, the chain 34 is driven to rotate under the action of the slave sprocket 33. When the chain 34 rotates, it will drive the filter shovel plate 35 to rotate in and out reciprocatingly. When the filter shovel plate 35 rotates, the fish scales at the bottom of the inner cavity of the cleaning box 21 can be cleaned into the inclined bucket 22, which is convenient for subsequent centralized processing.

[0033] Example 2

[0034] like Figure 1-Figure 7 As shown, based on the above embodiment, this embodiment further provides the following content:

[0035] The auxiliary cleaning assembly 4 includes a blower 41, which is fixedly connected to one side of the cleaning box 21. The output end of the blower 41 is fixedly connected to an exhaust pipe 42, and one end of the exhaust pipe 42 is fixedly connected to an air box 43. The air box 43 is fixedly connected to one side of the cleaning box 21. Air ducts 44 are fixedly connected to one side of the air box 43 at equal intervals. Exhaust pipes 45 are fixedly connected to the outer surface of the air duct 44 at equal intervals. The conveying assembly 5 includes a conveying frame 51. Conveying rollers 52 are rotatably connected to the middle of the inner cavity of the conveying frame 51. The outer surface of the conveying rollers 52 is mounted with a mesh conveyor belt 53. A conveying motor 54 is fixedly connected to one side of the conveying frame 51. The output shaft end of the conveying motor 54 is connected to one of the conveying rollers 52 through a worm and a worm gear. The spray assembly 6 includes a water pump 61 and a vertical rod 62. The two ends of the top surface of the conveying frame 51 are fixedly connected with the vertical rod 62. The top surface of the vertical rod 62 is fixedly connected with a water diversion box 63. The two groups of diversion boxes 63 are fixedly connected with nozzles 64 at equal intervals. One side of the cleaning box 21 is fixedly connected with the water pump 61. The input end of the water pump 61 is connected to the filter box 25 through the water inlet pipe 65, and the output end of the water pump 61 is connected to the inner cavity of the water diversion box 63 through the hose 66.

[0036] The stinky mandarin fish is transported by the conveying component 5. During transportation, the blower 41 in the auxiliary cleaning component 4 cooperates with the air duct 44 to inject high-pressure air from the outside into the cleaning box 21, causing the water in the cleaning box 21 to surge upward, thereby blowing the stinky mandarin fish on the conveying component 5 upward. At this time, under the action of the spraying component 6, the high-pressure water flushes the stinky mandarin fish downward, thereby completing the cleaning of the stinky mandarin fish.

[0037] Example 3

[0038] like Figure 1-Figure 7 As shown, based on the above embodiment, this embodiment further provides the following content:

[0039] The lifting assembly 7 includes a vertical rod 71, and the vertical rods 71 ​​are fixedly connected to the top surface of the mounting plate 1 and on both sides of the cleaning box 21. A lifting groove 72 is provided on the upper part of one side of the vertical rod 71, and a lifting threaded rod 73 is rotatably connected in the lifting groove 72. The outer surface of the lifting threaded rod 73 is threadedly connected to a lifting frame 74, and one end of the lifting frame 74 is fixedly connected to the conveying frame 51. The top surface of the vertical rod 71 is fixedly connected to a lifting motor 75, and the output end of the lifting motor 75 is fixedly connected to the lifting threaded rod 73.

[0040] The lifting motor 75 drives the lifting threaded rod 73 to rotate. When the lifting threaded rod 73 rotates, it will drive the lifting frame 74 to move upward. When the lifting frame 74 moves upward, it can drive the conveying assembly 5 to move upward, thereby removing the conveying assembly 5 from the cleaning box 2, making it convenient for later maintenance of the conveying assembly 5 and cleaning of the bottom of the inner cavity of the cleaning box 2.

[0041] The working principle and use process of this utility model:

[0042] In use:

[0043] When in use, first, fill the cleaning box 21 with water, then put the smelly mandarin fish that need to be cleaned into the cleaning box 21, then start the conveying motor 54, and the conveying motor 54 drives one of the conveying rollers 52 to rotate through the worm and the worm gear. When the conveying roller 52 rotates, it will drive the conveyor belt 53 to rotate under the action of the other conveying rollers 52, thereby starting to convey the smelly mandarin fish that need to be cleaned. During the conveying, at this time, start the blower 41, and when the blower 41 works, it injects the outside air into the exhaust pipe 42, and then injects it into the multiple air ducts 44 through the exhaust pipe 42, and finally, exhausts the air. The pipe 45 injects air into the water, causing the water to roll up and down. At this time, the surge of water lifts up the smelly mandarin fish on the conveyor belt 53, causing the smelly mandarin fish to float to the surface of the water. At this time, the water pump 61 is started. When the water pump 61 works, it will pump the water in the cleaning box 21 into the water diversion box 63 under the action of the water inlet pipe 65 and the hose 66. Then, the water is distributed to the nozzle 64 under the action of the water diversion box 63. Finally, the floating smelly mandarin fish begins to be washed through the nozzle 64, causing the floating smelly mandarin fish to move downward. After the smelly mandarin fish has been repeatedly washed, it will be transported out of the cleaning box 21 by the conveying assembly 5.

[0044] When the bottom of the cleaning box 21 needs to be cleaned later, the sealing plate 23 is first disassembled. After disassembly, the water in the cleaning box 21 will be released. At this time, the cleaning motor 31 is started. When the cleaning motor 31 works, it will drive the main sprocket 32 ​​to rotate. When the main sprocket 32 ​​rotates, the chain 34 is driven to rotate back and forth under the action of the slave sprocket 33, thereby driving the filter shovel plate 35 to rotate back and forth, and all the fish scales on the bottom of the cleaning box 21 can be scraped off from the inclined bucket 22; thus, the cleaning of the bottom of the cleaning box 21 is achieved;

[0045] When comprehensive cleaning or maintenance is required later, the lifting motor 75 is started, and the lifting motor 75 drives the lifting threaded rod 73 to rotate, thereby driving the lifting frame 74 to move upward. When the lifting frame 74 moves upward, the conveying assembly 5 can be removed from the cleaning box 2 as a whole, which is convenient for the comprehensive cleaning of the cleaning box 21 later, and also convenient for the cleaning and maintenance of the conveying assembly.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A bubble cleaning machine for smelly mandarin fish, characterized by: The utility model comprises a mounting plate (1); a cleaning box assembly (2) is mounted on the top surface of the mounting plate (1); a cleaning assembly (3) is mounted on the bottom surface of the inner cavity of the cleaning box assembly (2); an auxiliary cleaning assembly (4) is mounted in the middle of the inner cavity of the cleaning box assembly (2); a conveying assembly (5) is mounted on the upper part of the inner cavity of the cleaning box assembly (2); a spraying assembly (6) is mounted on the top surface of the conveying assembly (5); a lifting assembly (7) is mounted on the top surface of the mounting plate (1) and on both sides of the cleaning box assembly (2); one end of the lifting assembly (7) is connected to one side of the conveying assembly (5); The cleaning box assembly (2) includes a cleaning box (21), the top surface of the mounting plate (1) is fixedly connected to the cleaning box (21), one end of the bottom surface of the cleaning box (21) is fixedly connected to an inclined bucket (22), the inner cavity of the inclined bucket (22) is communicated with the inner cavity of the cleaning box (21), a sealing plate (23) is fixedly connected to the opposite side of the inclined bucket (22) by bolts, a reflux hole (24) is provided on one side of the cleaning box (21), a filter box (25) is fixedly connected to one side of the cleaning box (21) and located on the side of the reflux hole (24), a filter plate (26) is slidably connected in the filter box (25), and one end of the inner cavity of the cleaning box (21) is fixedly connected to an auxiliary blanking plate (27).

2. The stinky mandarin fish bubble cleaning machine according to claim 1, characterized in that: The cleaning assembly (3) comprises a cleaning motor (31), a main sprocket (32) and a slave sprocket (33); the main sprocket (32) and the slave sprocket (33) are rotatably connected to the two sides of the inner cavity wall of the cleaning box (21); the main sprocket (32) is rotatably connected to the slave sprocket (33) through a chain (34); a filter shovel plate (35) is fixedly connected between the two groups of chains (34); one side of the cleaning box (21) is fixedly connected to the cleaning motor (31); the output shaft end of the cleaning motor (31) is rotatably connected to the main sprocket (32) through a worm and a worm wheel.

3. The stinky mandarin fish bubble cleaning machine according to claim 2, characterized in that: The auxiliary cleaning component (4) comprises a blower (41), one side of the cleaning box (21) is fixedly connected to the blower (41), the output end of the blower (41) is fixedly connected to an exhaust pipe (42), one end of the exhaust pipe (42) is fixedly connected to a wind box (43), one side of the cleaning box (21) is fixedly connected to the wind box (43), one side of the wind box (43) is fixedly connected to an air duct (44) at equal intervals, and the outer surface of the air duct (44) is fixedly connected to an exhaust pipe (45) at equal intervals.

4. The air bubble cleaning machine for smelly mandarin fish according to claim 3, characterized in that: The conveying assembly (5) comprises a conveying frame (51), wherein the middle part of the inner cavity of the conveying frame (51) is rotatably connected to a conveying roller (52), the outer surface of the conveying roller (52) is installed with a mesh conveying belt (53), and one side of the conveying frame (51) is fixedly connected to a conveying motor (54), and the output shaft end of the conveying motor (54) is connected to one of the conveying rollers (52) through a worm and a worm gear.

5. The air bubble cleaning machine for smelly mandarin fish according to claim 4, characterized in that: The spray assembly (6) comprises a water pump (61) and a vertical rod (62). The two ends of the top surface of the conveying frame (51) are respectively fixedly connected with the vertical rods (62). The top surface of the vertical rods (62) is fixedly connected with a water separation box (63). Spray heads (64) are fixedly connected at equal intervals between two groups of the water separation boxes (63). One side of the cleaning box (21) is fixedly connected with the water pump (61). The input end of the water pump (61) is connected to the filter box (25) through a water inlet pipe (65), and the output end of the water pump (61) is connected to the inner cavity of the water separation box (63) through a hose (66).

6. The air bubble cleaning machine for smelly mandarin fish according to claim 5, characterized in that: The lifting assembly (7) includes a vertical rod (71), the top surface of the mounting plate (1) and the two sides of the cleaning box (21) are fixedly connected with the vertical rods (71), the upper part of one side of the vertical rod (71) is provided with a lifting groove (72), the lifting groove (72) is rotatably connected with a lifting threaded rod (73), the outer surface of the lifting threaded rod (73) is threadedly connected with a lifting frame (74), one end of the lifting frame (74) is fixedly connected to the conveying frame (51), the top surface of the vertical rod (71) is fixedly connected with a lifting motor (75), and the output end of the lifting motor (75) is fixedly connected to the lifting threaded rod (73).