A telescopic arm mechanism with flexible shaft drive and a fermentation tank cleaner

Abstract

This utility model provides a telescopic arm mechanism with flexible shaft drive and a fermenter cleaner, belonging to the field of pressure vessel technology. It includes a fixed cylinder, a transmission screw, a telescopic cylinder, a drive assembly, and a flexible shaft. Both ends of the fixed cylinder have through-holes. The transmission screw is installed in the fixed cylinder and rotatably connected to it, with a nut on the screw. The telescopic cylinder is installed inside the fixed cylinder and fitted between the transmission screw and the inner wall of the fixed cylinder. One end of the telescopic cylinder is fixedly connected to the nut. The drive assembly is installed on the outside of the fermenter. One end of the flexible shaft is connected to the drive assembly, and the other end passes through the corresponding through-hole and connects to the transmission screw. The telescopic arm mechanism with flexible shaft drive provided by this utility model reduces the weight of the entire telescopic arm mechanism by placing the drive assembly externally, and the hollow fixed cylinder and telescopic cylinder are also relatively lightweight. Furthermore, the use of a helical drive avoids leakage and eliminates the risk of contamination.

Description

Technical Field

[0001] This utility model belongs to the field of pressure vessel technology, and more specifically, it relates to a telescopic arm mechanism with flexible shaft drive and a fermentation tank cleaner. Background Technology

[0002] The telescopic mechanism of common fermentation tank cleaning machines is usually powered by an electric motor or hydraulic motor, with the power source built into the telescopic arm. This structure is compact, but the telescopic arm needs to enter the tank to perform telescopic and swinging movements. Therefore, the structure with the built-in power source increases the weight of the telescopic arm, thereby increasing the load and swing inertia. This places higher strength requirements on the components that support the telescopic mechanism. At the same time, if the hydraulic oil leaks, it increases the risk of contamination inside the tank. Utility Model Content

[0003] The purpose of this invention is to provide a telescopic arm mechanism with flexible shaft drive and a fermentation tank cleaner, so as to solve the technical problems of the existing telescopic mechanism having a large weight and being prone to pollution risks.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a telescopic arm mechanism with flexible shaft drive, comprising:

[0005] A fixing cylinder is used to install in a fermentation tank, with one end extending into the fermentation tank; both ends of the fixing cylinder are provided with through openings.

[0006] A lead screw is installed in the fixed cylinder and arranged along the length of the fixed cylinder; the lead screw is rotatably connected to the fixed cylinder; the lead screw is provided with a threaded nut.

[0007] A telescopic cylinder is installed inside the fixed cylinder and fitted between the transmission screw and the inner wall of the fixed cylinder; one end of the telescopic cylinder is fixedly connected to the screw nut, and the other end is used to move along the length direction of the fixed cylinder and pass through the through-hole; the outer wall of the telescopic cylinder is slidably fitted with the inner wall of the fixed cylinder; a water supply pipe is used to be installed at the other end of the telescopic cylinder;

[0008] A drive assembly for mounting on the outside of the fermenter;

[0009] A flexible drive shaft is installed between the drive assembly and the fixed cylinder, with one end of the flexible drive shaft connected to the drive assembly and the other end passing through the corresponding through-hole and connected to the drive screw.

[0010] In one possible implementation, a limiting block is provided in the through-hole of the fixed cylinder near the drive assembly, and a connecting hole is provided on the limiting block. One end of the transmission screw is installed in the connecting hole and is rotatably connected to the limiting block.

[0011] In one possible implementation, a bearing is fixed in the connecting hole, and one end of the transmission screw is mounted in the bearing.

[0012] In one possible implementation, the limiting block is movably connected to the fixed cylinder, and the fixed cylinder is provided with fasteners for connecting the limiting block to the fixed cylinder.

[0013] In one possible implementation, the outer side of the limiting block is provided with multiple screw holes, and the outer side of the fixing cylinder is provided with multiple mounting holes; the fastener includes multiple bolts, and the fastener passes through the mounting holes and is threadedly connected to the screw holes.

[0014] In one possible implementation, the inner wall of the fixed cylinder is provided with a limiting surface arranged along the length direction, and the outer wall of the telescopic cylinder is provided with a mating surface that is slidably connected to the limiting surface.

[0015] In one possible implementation, a limiting ring is provided at the end of the transmission screw away from the drive assembly to limit the position of the lead screw nut.

[0016] In one possible implementation, the drive assembly includes an electric motor or a hydraulic motor, and a coupling is provided between the drive assembly and the transmission flexible shaft.

[0017] In one possible implementation, the transmission screw is provided with a weight-reducing hole that runs through the central axis, and the walls of the fixed cylinder and the telescopic cylinder are also provided with weight-reducing holes.

[0018] The beneficial effects of the flexible shaft driven telescopic arm mechanism provided by this utility model are as follows: Compared with the prior art, in use, the fixed cylinder, telescopic cylinder, and transmission screw of this utility model are inserted into the tank through the manhole. The drive assembly is installed on the outside of the tank, and the drive assembly and transmission screw are connected by a flexible shaft. The drive assembly is activated, and the transmission screw rotates in the fixed cylinder under the transmission of the flexible shaft. The nut moves along the length of the transmission screw, driving the telescopic cylinder to move, which in turn drives the nozzle and water pipe to operate. In this way, the drive assembly is externally mounted, reducing the weight of the entire telescopic arm mechanism. The hollow fixed cylinder and telescopic cylinder are also relatively lightweight. Furthermore, the use of a screw drive avoids leakage and eliminates the risk of contamination.

[0019] Another objective of this invention is to provide a fermentation tank cleaner, including any of the above-mentioned flexible shaft driven telescopic arm mechanisms.

[0020] This utility model provides a fermentation tank cleaner. Due to the adoption of a telescopic arm mechanism with flexible shaft drive, the weight of the entire telescopic arm mechanism is reduced by placing the drive component externally. The hollow fixed cylinder and telescopic cylinder are also relatively lightweight. Furthermore, the use of a screw drive avoids leakage and eliminates the risk of contamination. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the telescopic arm mechanism with flexible shaft drive provided in an embodiment of this utility model;

[0023] Figure 2 A connection diagram of the fixed cylinder, transmission screw, and telescopic cylinder provided for an embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram showing the connection between the fixing cylinder and the limiting block provided in an embodiment of the present utility model.

[0025] The following are the labeling elements in the figure:

[0026] 10. Fixed cylinder; 11. Through port; 12. Limiting block; 13. Connecting hole; 14. Bearing; 15. Mounting hole; 16. Screw hole; 17. Bolt; 20. Drive screw; 21. Threaded nut; 22. Limiting retaining ring; 30. Telescopic cylinder; 40. Drive assembly; 41. Coupling; 50. Drive flexible shaft. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Please see Figures 1 to 3 The telescopic arm mechanism with flexible shaft drive provided by this utility model will now be described. A telescopic arm mechanism with flexible shaft drive includes a fixed cylinder 10, a transmission screw 20, a telescopic cylinder 30, a drive assembly 40, and a transmission flexible shaft 50. The fixed cylinder 10 is installed in a fermentation tank, with one end extending into the fermentation tank. Both ends of the fixed cylinder 10 are provided with through openings 11. The transmission screw 20 is installed in the fixed cylinder 10 and arranged along the length direction of the fixed cylinder 10. The transmission screw 20 is rotatably connected to the fixed cylinder 10. The transmission screw 20 is provided with a threaded nut 21. The telescopic cylinder 30 is installed inside the fixed cylinder 10 and is fitted onto the transmission screw 50. Between the inner wall of the fixed cylinder 10 and the telescopic cylinder 30; one end of the telescopic cylinder 30 is fixedly connected to the screw nut 21, and the other end is used to move along the length direction of the fixed cylinder 10 and pass through the through hole 11; the outer wall of the telescopic cylinder 30 is slidably fitted with the inner wall of the fixed cylinder 10; the water supply pipe is used to be installed at the other end of the telescopic cylinder 30; the drive assembly 40 is used to be installed on the outside of the fermenter; the transmission flexible shaft 50 is installed between the drive assembly 40 and the fixed cylinder 10, and one end of the transmission flexible shaft 50 is connected to the drive assembly 40, and the other end passes through the corresponding through hole 11 and is connected to the transmission screw 20.

[0032] Compared with the prior art, the flexible shaft driven telescopic arm mechanism provided by this utility model, in use, involves inserting the fixed cylinder 10, telescopic cylinder 30, and transmission screw 20 into the tank through the manhole. The drive assembly 40 is installed on the outside of the tank, and the drive assembly 40 and the transmission screw 20 are connected by a flexible shaft 50. The drive assembly 40 is activated, and under the transmission of the flexible shaft 50, the transmission screw 20 rotates within the fixed cylinder 10. The nut 21 moves along the length of the transmission screw 20, driving the telescopic cylinder 30 to move, thereby actuating the nozzle and water pipe. This method reduces the weight of the entire telescopic arm mechanism by placing the drive assembly 40 externally, and the hollow fixed cylinder 10 and telescopic cylinder 30 are also relatively lightweight. Furthermore, the use of a helical drive avoids leakage and eliminates the risk of contamination.

[0033] The flexible drive shaft 50 can transmit rotational motion and torque. Its core function is to achieve flexible power transmission in situations where there are angular deviations, relative motions, or limited space. Preferably, the flexible drive shaft 50 can be a steel wire braided flexible shaft, which is made of multiple layers of steel wire wound together. The inner layer is the core shaft (usually multiple strands of steel wire twisted together), responsible for transmitting torque; the outer layer is a protective sleeve (multi-strand steel wire braided or made of plastic or rubber), which reduces friction, protects the core shaft, and maintains flexibility. Alternatively, the flexible drive shaft 50 can be a helical spring flexible shaft or an armored flexible shaft, which is made of high-strength steel wire wound into a helical spring shape, utilizing the torsional characteristics of the spring to transmit power. The armored flexible shaft has a metal armor sleeve (such as copper or stainless steel) wrapped around the core shaft, combining flexibility and corrosion resistance. The core advantage of the flexible drive shaft 50 is "flexible transmission." In a motor-reducer-coupling system, it can compensate for positional deviations that rigid couplings cannot accommodate, making power transmission more flexible.

[0034] Please see Figures 1 to 3 As a specific embodiment of the telescopic arm mechanism with flexible shaft transmission provided by this utility model, a limiting block 12 is provided in the through-hole 11 near the drive assembly 40 of the fixed cylinder 10, and a connecting hole 13 is provided on the limiting block 12. One end of the transmission screw 20 is installed in the connecting hole 13 and is rotatably connected to the limiting block 12. The limiting block 12 is adapted to the inner wall of the fixed cylinder 10 and is fixedly connected to the fixed cylinder 10. A connecting hole 13 is provided on the limiting block 12, and one end of the transmission screw 20 is installed into the connecting hole 13 and rotatably connected to the limiting block 12, so that the transmission screw 20 rotates stably.

[0035] Preferably, a bearing 14 is fixedly installed in the connecting hole 13, and one end of the transmission screw 20 is installed in the bearing 14; by installing the bearing 14, one end of the transmission screw 20 is installed into the bearing 14, making the rotation of the transmission screw 20 smoother and more accurate. One end of the transmission screw 20 is provided with a smooth shaft section, which is fixedly connected to the inner ring of the bearing 14.

[0036] Please see Figures 1 to 3 As a specific embodiment of the telescopic arm mechanism with flexible shaft drive provided by this utility model, the limiting block 12 is movably connected to the fixed cylinder 10, and the fixed cylinder 10 is provided with fasteners for connecting the limiting block 12 to the fixed cylinder 10; the limiting block 12 is set to be movable along the axial direction of the fixed cylinder 10, thereby adjusting the position of the limiting block 12 so as to change the effective working position of the transmission screw 20, and finally realize the movement range of the telescopic cylinder 30; after the limiting block 12 is moved to the accurate installation position, the limiting block 12 is fixed to the fixed cylinder 10 with fasteners, and the fasteners can be loosened when the limiting block 12 needs to be moved.

[0037] Please see Figure 3 As a specific embodiment of the telescopic arm mechanism with flexible shaft drive provided by this utility model, the outer side of the limiting block 12 is provided with a plurality of screw holes 16, and the outer side of the fixed cylinder 10 is provided with a plurality of mounting holes 15; the fasteners include a plurality of bolts 17, and the fasteners pass through the mounting holes 15 and are threadedly connected to the screw holes 16; when the limiting block 12 is moved within the fixed cylinder 10, after the screw holes 16 on the limiting block 12 are coaxially aligned with the mounting holes 15 at the corresponding positions, the bolts 17 are passed through the mounting holes 15 and threadedly connected to the screw holes 16, thereby fixing the limiting block 12 to the fixed cylinder 10.

[0038] Preferably, a plurality of mounting holes 15 are evenly spaced along the circumference of the fixed cylinder 10; similarly, a plurality of screw holes 16 are evenly spaced along the circumference of the limiting block 12.

[0039] Preferably, the multiple mounting holes 15 are divided into two groups, and the two groups of mounting holes 15 are arranged at intervals along the axial direction of the fixed cylinder 10, and the multiple mounting holes 15 in the same group are evenly arranged at intervals along the circumferential direction of the fixed cylinder 10. The screw holes 16 on the limiting block 12 correspond one-to-one with the mounting holes 15.

[0040] Please see Figure 1 and Figure 2 As a specific embodiment of the telescopic arm mechanism with flexible shaft drive provided by this utility model, the inner wall of the fixed cylinder 10 is provided with a limiting surface arranged along the length direction, and the outer wall of the telescopic cylinder 30 is provided with a mating surface that is slidably connected with the limiting surface; when the telescopic cylinder 30 is installed into the inner wall of the fixed cylinder 10, the mating surface on the telescopic cylinder 30 is mated with the limiting surface on the inner wall of the fixed cylinder 10, and the telescopic cylinder 30 can only slide along the length direction of the fixed cylinder 10 by means of the mating surface and the limiting surface.

[0041] Please see Figure 1 and Figure 2As a specific embodiment of the telescopic arm mechanism with flexible shaft transmission provided by this utility model, a limiting ring 22 is provided at the end of the transmission screw 20 away from the drive assembly 40 to limit the position of the screw nut 21; the limiting ring 22 is fixedly installed at the end of the transmission screw 20, so that the screw nut 21 is limited by the limiting ring 22 during the movement and will not disengage from the transmission screw 20.

[0042] Please see Figure 1 As a specific embodiment of the telescopic arm mechanism with flexible shaft transmission provided by this utility model, the drive component 40 includes a motor or a hydraulic motor, and a coupling 41 is provided between the drive component 40 and the flexible shaft 50; the motor or hydraulic motor generates torque, and transmits it to the flexible shaft 50 through the coupling 41, thereby driving the transmission screw 20 to rotate, and thus causing the telescopic cylinder 30 to move.

[0043] As a specific embodiment of the telescopic arm mechanism with flexible shaft drive provided by this utility model, the transmission screw 20 is provided with a weight reduction hole that runs through the central axis, and the walls of the fixed cylinder 10 and the telescopic cylinder 30 are also provided with weight reduction holes. By opening weight reduction holes on the transmission screw 20, the transmission screw 20 is made into a hollow structure, thereby greatly reducing the weight of the transmission screw 20. At the same time, several weight reduction holes are also opened on the walls of the fixed cylinder 10 and the telescopic cylinder 30, further reducing the weight of the fixed cylinder 10 and the telescopic cylinder 30, reducing the self-weight of the entire telescopic arm mechanism, thereby reducing the swing inertia, reducing the strength requirements, and ensuring a high degree of cleanliness of the tank by the telescopic arm mechanism.

[0044] Not shown in the figure, this utility model embodiment also provides a fermentation tank cleaner, which includes any of the above-mentioned flexible shaft driven telescopic arm mechanisms.

[0045] The fermentation tank cleaner provided by this utility model adopts the above-mentioned flexible shaft drive telescopic arm mechanism. Therefore, by placing the drive component 40 externally, the weight of the entire telescopic arm mechanism is reduced, and the weight of the hollow fixed cylinder 10 and telescopic cylinder 30 is also smaller. Furthermore, the use of a screw drive method avoids leakage and eliminates the risk of contamination.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A telescopic arm mechanism driven by a flexible shaft, characterized in that, include: A fixing cylinder is used to install in a fermentation tank, with one end extending into the fermentation tank; both ends of the fixing cylinder are provided with through openings. A lead screw is installed in the fixed cylinder and arranged along the length of the fixed cylinder; the lead screw is rotatably connected to the fixed cylinder; the lead screw is provided with a threaded nut. A telescopic cylinder is installed inside the fixed cylinder and fitted between the transmission screw and the inner wall of the fixed cylinder; one end of the telescopic cylinder is fixedly connected to the screw nut, and the other end is used to move along the length direction of the fixed cylinder and pass through the through-hole; the outer wall of the telescopic cylinder is slidably fitted with the inner wall of the fixed cylinder; a water supply pipe is used to be installed at the other end of the telescopic cylinder; A drive assembly for mounting on the outside of the fermenter; A flexible drive shaft is installed between the drive assembly and the fixed cylinder, with one end of the flexible drive shaft connected to the drive assembly and the other end passing through the corresponding through-hole and connected to the drive screw.

2. A soft shaft driven telescopic arm mechanism as claimed in claim 1, wherein, The fixed cylinder is provided with a limiting block in the through-hole near the drive assembly, and the limiting block is provided with a connecting hole. One end of the transmission screw is installed in the connecting hole and is rotatably connected to the limiting block.

3. A soft shaft driven telescopic arm mechanism as claimed in claim 2, wherein, A bearing is fixed in the connecting hole, and one end of the transmission screw is installed in the bearing.

4. The soft shaft driven telescoping arm mechanism of claim 2, wherein, The limiting block is movably connected to the fixed cylinder, and the fixed cylinder is provided with fasteners for connecting the limiting block to the fixed cylinder.

5. A soft shaft driven telescopic arm mechanism as claimed in claim 4, wherein, The outer side of the limiting block is provided with multiple screw holes, and the outer side of the fixing cylinder is provided with multiple mounting holes; the fastener includes multiple bolts, and the fastener passes through the mounting holes and is threadedly connected to the screw holes.

6. The soft shaft driven telescoping arm mechanism of claim 1, wherein, The inner wall of the fixed cylinder is provided with a limiting surface arranged along the length direction, and the outer wall of the telescopic cylinder is provided with a mating surface that is slidably connected to the limiting surface.

7. The soft shaft driven telescoping arm mechanism of claim 1, wherein, The end of the transmission screw away from the drive assembly is provided with a limiting ring to limit the position of the lead screw nut.

8. The soft shaft driven telescoping arm mechanism of claim 1, wherein, The drive assembly includes an electric motor or a hydraulic motor, and a coupling is provided between the drive assembly and the transmission flexible shaft.

9. The soft shaft driven telescoping arm mechanism of claim 1, wherein, The transmission screw is provided with a weight reduction hole that runs through the central axis, and the walls of the fixed cylinder and the telescopic cylinder are also provided with weight reduction holes.

10. A fermenter washer characterized by, Including the telescopic arm mechanism with flexible shaft drive as described in any one of claims 1-9.

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