Multi-layer filtering device for tin spraying wastewater

Abstract

The utility model relates to the technical field of filtering devices, in particular to a tin spraying wastewater multilayer filtering device which comprises a bottom plate, four supporting legs, a filtering box, a water inlet pipe, a water outlet pipe, a first baffle, a second baffle, a partition plate, a through groove, an inclined plate, a water passing groove, a double-shaft motor and a chemical feeding pipe. A filter box is mounted at the upper end of the bottom plate, a water inlet pipe is mounted at the left end of the filter box, a water outlet pipe is mounted at the right end of the filter box, activated carbon is arranged in the water outlet pipe, a double-shaft motor is mounted at the upper end of the filter box, and a dosing pipe is mounted at the upper end of the filter box and located on the right side of the double-shaft motor; through the automatic cleaning and stirring functions, manual intervention is reduced, the continuous and efficient filtering performance of the filter screen is ensured, meanwhile, mixing and reaction of substances and chemicals in waste water are promoted, harmful substances such as heavy metal ions are further removed, and finally efficient purification of the waste water is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a multi-layer filtering device for tin-spraying wastewater. Background Art

[0002] Tin spraying wastewater often contains a variety of toxic substances. If these substances are discharged directly without proper treatment, they will seriously pollute the environment and pose a huge threat to human health. Therefore, targeted purification measures should be taken to ensure that the wastewater can only be safely discharged into the natural environment after meeting strict environmental protection standards.

[0003] However, since industrial wastewater contains various types of impurities, these impurities often remain inside the filter device during the filtration process, especially the filter mesh inside the filter device. After long-term use, too many impurities accumulate. Since the filter mesh is located inside the box, it is not easy to disassemble and clean. This situation will cause the filtration efficiency of the filter device to gradually decrease.

[0004] Therefore, in view of the situation where the filter mesh inside the above-mentioned filter device accumulates too much impurities after long-term use, resulting in reduced filtration efficiency, a multi-layer filtration device for tin spraying wastewater can be designed. Through the threaded transmission structure and the rotary stirring structure, the filter mesh can be automatically cleaned while the tin spraying wastewater is filtered multiple times, thereby avoiding clogging of the filter mesh and causing a decrease in filtration effect. Utility Model Content

[0005] In order to overcome the problem that the filter mesh inside the filter device accumulates too much impurities after long-term use, resulting in reduced filtration efficiency.

[0006] The technical solution of the utility model is: a multi-layer filtering device for tin-spraying wastewater, comprising a bottom plate, a support leg, a filter box, a water inlet pipe, a water outlet pipe, a No. 1 baffle, a No. 2 baffle, a partition, a through slot, an inclined plate, a water trough, a dual-axis motor and a dosing pipe; the lower end of the bottom plate is fixedly connected to four support legs for support, the upper end of the bottom plate is installed with a filter box, the left end of the filter box is installed with a water inlet pipe, the right end of the filter box is installed with a water outlet pipe, activated carbon is arranged in the water outlet pipe, and a No. 1 baffle is fixed in the filter box. Baffle No. 1 is located on the left side of baffle No. 2, the lower end of baffle No. 1 is fixedly connected to a partition and the partition is fixedly connected to the left end of baffle No. 2, baffle No. 1 is provided with through slots running through on the left and right sides, an inclined plate is fixedly connected to the filter box and the inclined plate is located at the lower end of baffle No. 1, a water trough is run through in baffle No. 2 and the notch for the water trough is located at the upper end of the inclined plate, a dual-axis motor is installed at the upper end of the filter box, a dosing pipe is installed at the upper end of the filter box and the dosing pipe is located on the right side of the dual-axis motor.

[0007] Preferably, the bottom plate is the base of the entire device, used to support and fix the filter box and other components, the support legs are used to support the entire device to keep it in a stable working state, the filter box is used to accommodate and treat wastewater, the water inlet pipe is used to introduce the wastewater to be treated into the filter box, and the water outlet pipe is used to discharge the treated wastewater out of the device, and activated carbon is provided in the water outlet pipe to further purify the wastewater and remove impurities and odors therein. The cavity enclosed by baffle No. 1, baffle No. 2 and the partition is used to receive impurities on the filter net, and the through groove allows impurities to pass through baffle No. 1 and enter the cavity. The design of the inclined plate helps to guide the wastewater to the right side of baffle No. 2. The dual-axis motor is the power source of the device, and the threaded rod and the rotating shaft are driven to rotate by the output shafts at the left and right ends. The dosing pipe is used to add chemicals to the filter box to assist the wastewater treatment process. By adding appropriate agents, heavy metal ions in the wastewater can be further removed.

[0008] Preferably, a slide groove is provided on the left inner wall of the filter box and the left end of the No. 1 baffle, and the left and right ends of the filter plate are integrally fixedly connected with convex rails adapted to the slide groove. A filter screen is provided in the filter plate and the filter plate is slidably connected to the slide groove through the convex rails. The slide groove provides a stable track so that the filter plate can slide smoothly in it. This design facilitates the installation, disassembly and cleaning of the filter plate. The filter screen arranged inside the filter plate can effectively intercept suspended matter, impurities and other particulate matter in the wastewater, thereby improving the purification effect of the wastewater. The convex rail not only serves to connect the filter plate and the slide groove, but also ensures the stability of the filter plate during the sliding process.

[0009] Preferably, a support plate is fixedly connected to the left side of the upper end of the filter box, and a No. 1 rotating support seat is fixedly connected to the right end of the support plate. The right end of the threaded rod is equipped with No. 1 coupling and is connected to the left end output shaft of the dual-axis motor through the No. 1 coupling. The left end of the threaded rod is rotatably connected to the left end of the No. 1 rotating support seat. The support plate serves as a supporting structure for the No. 1 rotating support seat and the threaded rod, ensuring that they can be stably installed on the filter box. The No. 1 rotating support seat provides a rotating fulcrum for the threaded rod, so that the threaded rod can rotate smoothly under the drive of the dual-axis motor. Under the drive of the motor, the threaded rod drives the connecting rod and the brush at its lower end to move above the filter net through rotational motion, thereby realizing automatic cleaning of the filter net. The No. 1 coupling is a key component connecting the threaded rod and the dual-axis motor, ensuring stable transmission between the two.

[0010] Preferably, an internal thread that matches the external thread of the threaded rod is provided in the connecting rod, and the threaded rod is threadedly connected to the connecting rod. A movable groove is provided through the upper end of the filter box, and the connecting rod extends into the filter box through the movable groove. A brush is installed at the lower end of the connecting rod. The connecting rod moves left and right along the movable groove under the drive of the threaded rod, driving the brush at its lower end to clean the filter. The movable groove provides a channel for the left and right movement of the connecting rod, ensuring the smooth progress of the cleaning process. The brush serves as the main tool for cleaning the filter. It cleans the surface of the filter by moving left and right, removes impurities and particulate matter attached to the filter, and at the same time, allows impurities and particulate matter to enter the cavity on the right.

[0011] Preferably, the lower end of the top plate is fixedly connected to four columns and is fixedly connected to the upper end of the filter box through the columns. The lower end of the top plate is fixedly connected to the No. 2 rotating support seat and the No. 2 rotating support seat is located between the four columns. These four columns serve as a supporting structure to ensure that the top plate can be firmly installed on the upper end of the filter box. The No. 2 rotating support seat provides a rotating fulcrum for the rotating shaft to ensure that the rotating shaft can rotate smoothly under the drive of the dual-axis motor. This design enables the stirring fan blades to smoothly perform stirring operations in the filter box.

[0012] Preferably, the upper end of the rotating shaft is rotatably connected to the No. 2 rotating support seat, and the lower end of the rotating shaft extends downward into the filter box. The outer wall of the lower end of the rotating shaft is fixedly connected with a stirring blade, and the outer wall of the upper end of the rotating shaft is fixedly connected with a driven bevel gear. The stirring blade rotates driven by the rotating shaft to stir the wastewater in the filter box and the added chemicals, promote mixing and reaction between substances, and improve treatment efficiency.

[0013] Preferably, the left end of the connecting shaft is equipped with a No. 2 coupling and is connected to the right end output shaft of the dual-shaft motor through the No. 2 coupling. The right end of the connecting shaft is fixedly connected to a driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear. The dual-shaft motor drives the driving bevel gear to rotate through the No. 2 coupling and the connecting shaft. Due to the meshing relationship between the driving bevel gear and the driven bevel gear, the rotating shaft and the stirring fan blades are driven to rotate. This transmission method has a compact structure and high transmission efficiency.

[0014] Beneficial effects of the utility model:

[0015] 1. This multi-layer filtration device for tin-spraying wastewater significantly improves the efficiency and effectiveness of wastewater treatment. Its automated cleaning and stirring functions not only reduce manual intervention, but also ensure the continuous and efficient filtration performance of the filter. At the same time, it promotes the mixing and reaction of substances and chemicals in the wastewater, further removes harmful substances such as heavy metal ions, and ultimately achieves efficient purification of wastewater.

[0016] 2. Activated carbon is installed in the outlet pipe to further purify the wastewater, remove impurities and odors, and thus improve the purification effect;

[0017] 3. The stirring blades rotate driven by the shaft to stir the wastewater in the filter box and the added chemicals, promoting mixing and reaction between substances and improving treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a first three-dimensional structural schematic diagram of the multi-layer filtration device for tin-spraying wastewater of the present invention;

[0019] Figure 2 Shown is a second three-dimensional structural schematic diagram of the multi-layer filtration device for tin-spraying wastewater of the present invention;

[0020] Figure 3 Shown is a front view schematic diagram of the multi-layer filtration device for tin-spraying wastewater of the present invention;

[0021] Figure 4 Shown is a top view schematic diagram of the multi-layer filtration device for tin-spraying wastewater of the present invention;

[0022] Figure 5 Shown is a schematic diagram of the first partial enlarged three-dimensional structure of the multi-layer filtration device for tin-spraying wastewater of the present invention;

[0023] Figure 6 What is shown is a schematic diagram of the second partial enlarged three-dimensional structure of the tin spraying wastewater multi-layer filtering device of the present invention.

[0024] Explanation of the accompanying symbols: 1. Bottom plate; 2. Support foot; 3. Filter box; 4. Water inlet pipe; 5. Water outlet pipe; 6. Baffle No. 1; 7. Baffle No. 2; 8. Partition; 9. Through groove; 10. Inclined plate; 11. Water trough; 12. Dual-axis motor; 13. Dosing pipe; 14. Slide groove; 15. Convex rail; 16. Filter plate; 17. Filter screen; 18. Support plate; 19. Rotary support seat No. 1; 20. Threaded rod; 21. Coupling No. 1; 23. Moving groove; 24. Connecting rod; 25. Brush; 26. Top plate; 27. Column; 28. Rotary support seat No. 2; 29. Rotating shaft; 30. Mixing fan blade; 31. Driven bevel gear; 32. Connecting shaft; 33. Coupling No. 2; 34. Driving bevel gear. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] See also Figures 1-6The utility model provides an embodiment: a multi-layer filtering device for tin-spraying wastewater, comprising a bottom plate 1, a support leg 2, a filter box 3, a water inlet pipe 4, a water outlet pipe 5, a first baffle 6, a second baffle 7, a partition 8, a through slot 9, an inclined plate 10, a water trough 11, a dual-axis motor 12 and a dosing pipe 13; the lower end of the bottom plate 1 is fixedly connected to four support legs 2 for support, the upper end of the bottom plate 1 is installed with a filter box 3, the left end of the filter box 3 is installed with a water inlet pipe 4, and the right end of the filter box 3 is installed with an outlet pipe. Water pipe 5, activated carbon is provided in the water outlet pipe 5, a baffle 6 and a baffle 7 are fixed in the filter box 3, the baffle 6 is located on the left side of the baffle 7, the lower end of the baffle 6 is fixedly connected with a partition 8 and the partition 8 is fixedly connected to the left end of the baffle 7, the baffle 6 is provided with a through groove 9, the filter box 3 is fixedly connected with a ramp 10 and the ramp 10 is located at the lower end of the baffle 6, the baffle 7 is provided with a water trough 11 and a groove for the water trough 11 The outlet is located at the upper end of the inclined plate 10, and a dual-axis motor 12 is installed at the upper end of the filter box 3. A dosing pipe 13 is installed at the upper end of the filter box 3 and the dosing pipe 13 is located on the right side of the dual-axis motor 12. The bottom plate 1 is the base of the entire device, which is used to support and fix the filter box 3 and other components. The support leg 2 is used to support the entire device so that it maintains a stable working state. The filter box 3 is used to accommodate and treat wastewater. The water inlet pipe 4 is used to introduce the wastewater to be treated into the filter box 3, and the water outlet pipe 5 is used to discharge the treated wastewater out of the device. Activated carbon is arranged in the water outlet pipe 5 to further purify the wastewater and remove impurities and odors therein. The cavity enclosed by the No. 1 baffle 6, the No. 2 baffle 7 and the partition 8 is used to receive impurities on the filter screen 17. The through groove 9 allows impurities to pass through the No. 1 baffle 6 and enter the cavity. The design of the inclined plate 10 helps to guide the wastewater to the right side of the No. 2 baffle 7. The dual-axis motor 12 is the power source of the device, which drives the threaded rod 20 and the rotating shaft 29 to rotate through the output shafts at the left and right ends. The dosing pipe 13 is used to add chemical agents into the filter box 3 to assist the wastewater treatment process. By adding appropriate agents, heavy metal ions in the wastewater can be further removed. A slide groove 14 is provided on the left inner wall of the filter box 3 and the left end of the No. 1 baffle 6. The left and right ends of the filter plate 16 are integrally fixedly connected with a convex rail 15 adapted to the slide groove 14. A filter screen 17 is provided in the filter plate 16 and the filter plate 16 is slidably connected to the slide groove 14 through the convex rail 15. The slide groove 14 provides a stable track so that the filter plate 16 can slide smoothly therein. This design facilitates the installation, disassembly and cleaning of the filter plate 16. The filter screen 17 arranged inside the filter plate 16 can effectively intercept suspended matter, impurities and other particulate matter in the wastewater, thereby improving the purification effect of the wastewater. The convex rail 15 not only connects the filter plate 16 and the slide groove 14, but also ensures the stability of the filter plate 16 during the sliding process.

[0027] See also Figure 5In this embodiment, a support plate 18 is fixedly connected to the left side of the upper end of the filter box 3, and a No. 1 rotating support seat 19 is fixedly connected to the right end of the support plate 18. The right end of the threaded rod 20 is equipped with a No. 1 coupling 21 and is connected to the left end output shaft of the dual-axis motor 12 through the No. 1 coupling 21. The left end of the threaded rod 20 is rotatably connected to the left end of the No. 1 rotating support seat 19. An internal thread that matches the external thread of the threaded rod 20 is provided in the connecting rod 24. The threaded rod 20 is threadedly connected to the connecting rod 24. A movable groove 23 is provided through the upper end of the filter box 3. The connecting rod 24 extends into the filter box 3 through the movable groove 23. A brush 25 is installed at the lower end of the connecting rod 24. The support plate 18 serves as a supporting structure for the No. 1 rotating support seat 19 and the threaded rod 20 to ensure that they can be stably installed on the filter box 3. The No. 1 rotating support seat 19 provides a rotating fulcrum for the threaded rod 20. The threaded rod 20 can rotate smoothly under the drive of the dual-axis motor 12. Under the drive of the motor, the threaded rod 20 drives the connecting rod 24 and the brush 25 at its lower end to move above the filter 17 through rotation, thereby realizing automatic cleaning of the filter 17. The No. 1 coupling 21 is a key component connecting the threaded rod 20 and the dual-axis motor 12, ensuring stable transmission between the two. The connecting rod 24 moves left and right along the moving groove 23 under the drive of the threaded rod 20, driving the brush 25 at its lower end to clean the filter 17. The moving groove 23 provides a channel for the left and right movement of the connecting rod 24, ensuring the smooth progress of the cleaning process. The brush 25 is the main tool for cleaning the filter 17. It cleans the surface of the filter 17 by moving left and right, removes impurities and particulate matter attached to the filter 17, and at the same time, allows impurities and particulate matter to enter the cavity on the right.

[0028] See also Figure 6In this embodiment, the lower end of the top plate 26 is fixedly connected to four columns 27 and is fixedly connected to the upper end of the filter box 3 through the columns 27. The lower end of the top plate 26 is fixedly connected to the No. 2 rotating support seat 28 and the No. 2 rotating support seat 28 is located between the four columns 27. The upper end of the rotating shaft 29 is rotatably connected to the No. 2 rotating support seat 28, and the lower end of the rotating shaft 29 extends downward into the filter box 3. The outer wall of the lower end of the rotating shaft 29 is fixedly connected to the stirring fan blade 30, and the outer wall of the upper end of the rotating shaft 29 is fixedly connected to the driven bevel gear 31. The left end of the connecting shaft 32 is equipped with the No. 2 coupling 33 and is connected to the right end output shaft of the dual-axis motor 12 through the No. 2 coupling 33. The right end of the connecting shaft 32 is fixedly connected to the driving bevel gear 34, and the driving bevel gear 34 is meshed with the driven bevel gear 31. The column 27 serves as a supporting structure to ensure that the top plate 26 can be firmly installed on the upper end of the filter box 3. The No. 2 rotating support seat 28 provides a rotating fulcrum for the rotating shaft 29, ensuring that the rotating shaft 29 can rotate smoothly under the drive of the dual-axis motor 12. This design enables the stirring blades 30 to smoothly perform stirring operations in the filter box 3. The stirring blades 30 rotate under the drive of the rotating shaft 29 to stir the wastewater and added chemicals in the filter box 3, promote the mixing and reaction between the substances, and improve the processing efficiency. The dual-axis motor 12 drives the active bevel gear 34 to rotate through the No. 2 coupling 33 and the connecting shaft 32. Due to the meshing relationship between the active bevel gear 34 and the driven bevel gear 31, the rotating shaft 29 and the stirring blades 30 are driven to rotate. This transmission method has a compact structure and high transmission efficiency.

[0029] During the process, the staff first injects the wastewater to be treated into the filter box 3 through the water inlet pipe 4. The filter screen 17 effectively intercepts and removes large particles and impurities in it. Then, the wastewater that has undergone preliminary purification is guided by the inclined plate 10 and flows smoothly to the area to the right of the second baffle 7.

[0030] At this time, the dual-axis motor 12 is started, and the output shafts at both ends thereof start working synchronously. The right-end output shaft drives the connecting shaft 32 to rotate, thereby driving the driving bevel gear 34 to rotate. Through the precise gear meshing mechanism, the driven bevel gear 31 responds and drives the rotating shaft 29 to rotate. The stirring blades 30 on the rotating shaft 29 start to vigorously stir the wastewater. At the same time, chemical agents are added to the filter box 3 through the dosing pipe 13. Under the full stirring of the stirring blades 30, the chemical agents quickly react with the harmful substances in the wastewater, significantly improving the wastewater purification effect.

[0031] At the same time, the left end output shaft of the dual-axis motor 12 drives the threaded rod 20 to rotate slowly. The threaded fit between the threaded rod 20 and the connecting rod 24 enables the connecting rod 24 to move flexibly in the horizontal direction. As the connecting rod 24 moves left and right, the brush 25 at its lower end slides closely against the surface of the filter 17, effectively removing impurities and particulate matter attached to the net, ensuring the continuous unobstructed flow and efficient filtering performance of the filter 17.

[0032] Finally, the wastewater that has undergone multiple filtrations and purifications is slowly discharged from the filter box 3 through the outlet pipe 5, and the activated carbon layer in the outlet pipe 5 deeply purifies the wastewater again, completely removing the residual impurities and odors therein.

[0033] Through the above steps, the multi-layer filtration device for tin-spraying wastewater significantly improves the efficiency and effect of wastewater treatment. Its automatic cleaning and stirring functions not only reduce manual intervention, but also ensure the continuous and efficient filtration performance of the filter 17. At the same time, it promotes the mixing and reaction of substances and chemicals in the wastewater, further removes harmful substances such as heavy metal ions, and ultimately achieves efficient purification of wastewater, solving the problem of excessive accumulation of impurities in the filter 17 inside the filtration device after long-term use, resulting in reduced filtration efficiency.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A multi-layer filtration device for tin-spraying wastewater, comprising a base plate (1), a support leg (2), a filter box (3), an inlet pipe (4) and an outlet pipe (5); characterized in that: The invention also includes a baffle No. 1 (6), a baffle No. 2 (7), a partition (8), a through groove (9), an inclined plate (10), a water trough (11), a double-axis motor (12) and a dosing pipe (13); the lower end of the bottom plate (1) is fixedly connected with four supporting legs (2) for support, the upper end of the bottom plate (1) is installed with a filter box (3), the left end of the filter box (3) is installed with a water inlet pipe (4), the right end of the filter box (3) is installed with a water outlet pipe (5), and activated carbon is arranged in the water outlet pipe (5). The filter box (3) is fixed with a baffle No. 1 (6) and a baffle No. 2 (7), the baffle No. 1 (6) is located on the left side of the baffle No. 2 (7), and the baffle No. 1 (6) is located on the left side of the baffle No. 2 (7). The lower end of the No. 1 baffle (6) is fixedly connected with a partition (8) and the partition (8) is fixedly connected to the left end of the No. 2 baffle (7). A through groove (9) is provided in the left and right sides of the No. 1 baffle (6). A slant plate (10) is fixedly connected in the filter box (3) and the slant plate (10) is located at the lower end of the No. 1 baffle (6). A water trough (11) is provided in the No. 2 baffle (7) and the notch of the water trough (11) is located at the upper end of the slant plate (10). A double-axis motor (12) is installed at the upper end of the filter box (3). A dosing pipe (13) is installed at the upper end of the filter box (3) and the dosing pipe (13) is located on the right side of the double-axis motor (12).

2. The multi-layer filtration device for tin-spraying wastewater according to claim 1, characterized in that: A chute (14) is provided on the left inner wall of the filter box (3) and the left end of the first baffle (6), and the left and right ends of the filter plate (16) are integrally fixedly connected with convex rails (15) adapted to the chute (14), and a filter screen (17) is provided in the filter plate (16), and the filter plate (16) is slidably connected to the chute (14) through the convex rails (15).

3. The multi-layer filtration device for tin-spraying wastewater according to claim 2, characterized in that: A support plate (18) is fixedly connected to the left side of the upper end of the filter box (3), and a No. 1 rotating support seat (19) is fixedly connected to the right end of the support plate (18). A No. 1 coupling (21) is installed on the right end of the threaded rod (20) and is connected to the left end output shaft of the dual-axis motor (12) through the No. 1 coupling (21). The left end of the threaded rod (20) is rotatably connected to the left end of the No. 1 rotating support seat (19).

4. The multi-layer filtration device for tin-spraying wastewater according to claim 3, characterized in that: An internal thread adapted to the external thread of the threaded rod (20) is provided in the connecting rod (24), the threaded rod (20) is threadedly connected to the connecting rod (24), a movable groove (23) is provided through the upper end of the filter box (3), the connecting rod (24) passes through the movable groove (23) and extends into the filter box (3), and a brush (25) is installed at the lower end of the connecting rod (24).

5. The multi-layer filtration device for tin-spraying wastewater according to claim 4, characterized in that: The lower end of the top plate (26) is fixedly connected to four columns (27) and is fixedly connected to the upper end of the filter box (3) through the columns (27). The lower end of the top plate (26) is fixedly connected to a second rotating support seat (28), and the second rotating support seat (28) is located between the four columns (27).

6. The multi-layer filtration device for tin-spraying wastewater according to claim 5, characterized in that: The upper end of the rotating shaft (29) is rotatably connected to the second rotating support seat (28), and the lower end of the rotating shaft (29) extends downward into the filter box (3). The outer wall of the lower end of the rotating shaft (29) is fixedly connected to the stirring blade (30), and the outer wall of the upper end of the rotating shaft (29) is fixedly connected to the driven bevel gear (31).

7. The multi-layer filtration device for tin-spraying wastewater according to claim 6, characterized in that: The left end of the connecting shaft (32) is equipped with a No. 2 coupling (33) and is connected to the right end output shaft of the dual-axis motor (12) through the No. 2 coupling (33). The right end of the connecting shaft (32) is fixedly connected with a driving bevel gear (34), and the driving bevel gear (34) is meshed with the driven bevel gear (31).

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