Transmission seal for a vacuum conditioning machine

Abstract

The present application belongs to the technical field of tobacco cutting, and discloses a transmission sealing device of a vacuum conditioning machine, which comprises a fixed plate, a driving part, a shift fork assembly and a conical sliding sleeve. The driving part is arranged on the fixed plate. The shift fork assembly is rotatably connected with the fixed plate, and one end of the shift fork assembly is connected with the output end of the driving part. The conical sliding sleeve is provided with an annular groove in the circumferential direction, and the annular groove is slidably connected with the other end of the shift fork assembly. The device is scientifically and reasonably designed. On the basis of the existing transmission system, the sealing assembly is improved. The transmission performance of the original equipment does not change. The conical sliding sleeve can realize the sealing of the transmission shaft and the fixed sealing seat. The shift fork assembly rotates under the drive of the driving part. The shift fork assembly can push the conical sliding sleeve to adhere to or separate from the fixed sealing seat, reduce the radial wear of the conical sliding sleeve during the movement of the transmission shaft, ensure the sealing performance of the conditioning box, and reduce the situation that the vacuum time is long, the energy consumption is increased, and the conditioning effect cannot meet the requirements.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing technology, and in particular to a transmission sealing device for a vacuum rehumidifier. Background Technology

[0002] Vacuum rehumidification is the first step in the tobacco processing, also known as pre-rehumidification. Its purpose is to increase the moisture content and temperature of the tobacco leaves, making them softer and looser, thus reducing breakage and loss in subsequent processes. Vacuum rehumidification also kills insects on the tobacco leaves, removes any green or unpleasant odors, and improves the color of the leaves. During vacuum rehumidification, stainless steel crates containing tobacco leaves are conveyed by roller conveyors into the rehumidification chamber of the vacuum rehumidifier. The doors at both ends of the chamber are then tightly closed, and the vacuum system removes the air from the chamber. Once the predetermined vacuum level is reached, the vacuuming stops, and the heating water system is activated, spraying saturated steam and water into the chamber. When the vacuum level rises to a certain value, the heating water system stops. After vacuum rehumidification is complete, the doors of the rehumidification chamber open, and the crates, carried by the roller conveyor, proceed to the next process. The roller conveyor transmission system inside the rehumidification chamber of the vacuum rehumidifier mainly consists of a reducer, coupling, main drive shaft, chain, chamber sealing components, and conical sliding sleeve. The sealing components and conical sliding sleeve isolate the inside of the rehumidification chamber from the outside atmosphere.

[0003] However, during operation, the reducer and the drive shaft are connected by a coupling, making it difficult to ensure concentricity and resulting in large circular runout. This causes severe radial wear of the tapered sleeve, leading to leakage in the rehumidification chamber, resulting in long evacuation time, increased energy consumption, and failure to meet the required rehumidification effect. Summary of the Invention

[0004] The purpose of this invention is to provide a transmission sealing device for a vacuum rehumidifier, in order to solve the problem mentioned in the background art, which is that the large circular runout of the transmission shaft causes severe radial wear of the conical sleeve, resulting in leakage of the rehumidification chamber.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A vacuum dehumidifier transmission sealing device, comprising:

[0007] Fixing plate;

[0008] A driving component, which is disposed on the fixed plate;

[0009] A shift fork assembly, which is rotatably connected to the fixed plate, with one end of the shift fork assembly connected to the output end of the drive component;

[0010] A tapered sliding sleeve is provided with an annular groove along its circumference, and the annular groove is slidably connected to the other end of the shift fork assembly.

[0011] Optionally, the shift fork assembly includes:

[0012] A connecting frame, one end of which is movably connected to the output end of the driving component;

[0013] The shift fork body has one end fixedly connected to the end of the connecting frame away from the driving member, and the end of the shift fork body away from the connecting frame is slidably connected to the annular groove.

[0014] A rotating part is disposed at the connection between the connecting frame and the shift fork body, and the rotating part is rotatably connected to the fixed plate.

[0015] Optionally, the rotating part has a rotating hole, the fixed plate is provided with a rotating seat, the rotating seat is provided with a pin, the pin passes through the rotating hole, and the pin is rotatably connected to the rotating hole.

[0016] Optionally, the connecting bracket is perpendicular to the fork body.

[0017] Optionally, the fixing plate is provided with a limiting screw, which can abut against the shift fork body.

[0018] Optionally, the tapered sliding sleeve includes:

[0019] The sliding sleeve body, wherein the annular groove is formed in the circumferential direction of the sliding sleeve body:

[0020] The first rubber ring is embedded in the inner wall of the sliding sleeve body;

[0021] The second rubber ring is embedded in the outer wall of the sliding sleeve body.

[0022] Optionally, the tapered sleeve further includes:

[0023] The third rubber ring is embedded in the inner wall of the sliding sleeve body.

[0024] Optionally, the driving component is a cylinder.

[0025] The beneficial effects of this invention are:

[0026] The vacuum rehumidifier transmission sealing device provided by this invention is scientifically and rationally designed. Based on the existing transmission system, the sealing components are improved without changing the transmission performance of the original equipment. The use of a conical sliding sleeve can achieve the sealing between the transmission shaft and the fixed sealing seat. The shift fork assembly rotates under the drive of the drive component, and the shift fork assembly can push the conical sliding sleeve to fit or separate from the fixed sealing seat, reducing the radial wear of the conical sliding sleeve during the movement of the transmission shaft, ensuring the sealing performance of the rehumidification box, and reducing the problems of long evacuation time, increased energy consumption, and failure to meet the required rehumidification effect. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the vacuum dehumidifier transmission sealing device provided by the present invention;

[0029] Figure 2 This is a schematic diagram of the limiting screw in this invention;

[0030] Figure 3 This is a schematic diagram of the conical sliding sleeve in this invention;

[0031] Figure 4 This is a schematic diagram of the structure of the vacuum rehumidifier transmission sealing device provided by the present invention assembled on the rehumidification box.

[0032] In the picture:

[0033] 100. Fixed plate; 110. Rotating seat; 120. Limiting screw; 130. Pin; 200. Driving component; 300. Shift fork assembly; 310. Connecting frame; 320. Shift fork body; 330. Rotating part; 400. Conical sliding sleeve; 410. Annular groove; 420. Sleeve body; 430. First rubber ring; 440. Second rubber ring; 450. Third rubber ring;

[0034] 10. Rehumidification chamber; 20. Drive shaft; 30. Fixed sealing seat; 40. Motor base; 50. Transmission shaft; 60. Coupling. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0036] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] like Figures 1 to 4 As shown, the present invention provides a vacuum rehumidifier transmission sealing device, including a fixed plate 100, a driving component 200, a shift fork assembly 300, and a conical sliding sleeve 400.

[0041] The fixed plate 100 is fixed on the rehumidification box 10; the driving component 200 is set on the fixed plate 100; the shift fork assembly 300 is rotatably connected to the fixed plate 100, and one end of the shift fork assembly 300 is connected to the output end of the driving component 200; the tapered sliding sleeve 400 has an annular groove 410 along the circumference, and the annular groove 410 is slidably connected to the other end of the shift fork assembly 300; the tapered sliding sleeve 400 is installed on the transmission shaft 20, the inner wall of the tapered sliding sleeve 400 is in contact with the transmission shaft 20, and the outer wall of the tapered sliding sleeve 400 is in contact with the fixed sealing seat 30. The fixing plate 100 is installed on the rehumidification box 10 and can be connected by screws. The conical sliding sleeve 400 is installed between the drive shaft 20 and the fixed sealing seat 30. The conical sliding sleeve 400 can move relative to the drive shaft 20 and the fixed sealing seat 30, and the conical sliding sleeve 400 serves to seal the rehumidification box 10. A motor (not shown in the figure) is installed on the motor base 40. The output end of the motor is transmitted to the drive shaft 20 through the transmission shaft 50 and the coupling 60. The rotation of the drive shaft 20 drives the roller conveyor inside the rehumidification box 10 to move, thereby realizing the entry and exit of the turnover box inside the rehumidification box 10. For example, the driving component 200 can be, but is not limited to, a cylinder.

[0042] The vacuum rehumidifier transmission sealing device provided by this invention is scientifically and rationally designed. Based on the existing transmission system, the sealing components are improved without changing the original equipment's transmission performance. A conical sliding sleeve 400 is used to achieve sealing between the transmission shaft 20 and the fixed sealing seat 30. Driven by the driving component 200, the shift fork assembly 300 rotates relative to the fixed plate 100, causing its end to swing. The end of the shift fork assembly 300 slides up and down within the annular groove 410 of the conical sliding sleeve 400, driving the conical sliding sleeve 400 to move left and right, thereby pushing the conical sliding sleeve 400 to engage or disengage from the fixed sealing seat 30. When the tobacco box enters or exits the vacuum rehumidifier rehumidification chamber 10, a motor-driven roller conveyor inside the rehumidification chamber 10 transports the tobacco box to the corresponding position. At this time, the rehumidification chamber 10... When the chamber does not need to maintain a vacuum, the drive unit 200 drives the shift fork assembly 300 to rotate relative to the fixed plate 100. The end of the shift fork assembly 300 swings to push the conical sleeve 400 to separate from the fixed sealing seat 30, thereby releasing the radial limit of the conical sleeve 400 by the fixed sealing seat 30 and reducing the radial wear of the conical sleeve 400 during the movement of the drive shaft 20. When the cigarette box needs vacuum rehumidification, the front and rear doors of the rehumidification chamber 10 are closed, and the interior of the rehumidification chamber 10 needs to maintain a vacuum. The drive unit 200 drives the shift fork assembly 300 to rotate relative to the fixed plate 100, and the end of the shift fork assembly 300 swings to push the conical sleeve 400 to fit with the fixed sealing seat 30, ensuring the sealing of the rehumidification chamber 10 during vacuum rehumidification and reducing the problems of long evacuation time, increased energy consumption, and failure to meet the requirements of rehumidification effect.

[0043] In some embodiments, the shift fork assembly 300 includes a connecting frame 310, a shift fork body 320, and a rotating part 330. One end of the connecting frame 310 is movably connected to the output end of the drive member 200. One end of the shift fork body 320 is fixedly connected to the end of the connecting frame 310 away from the drive member 200, and the end of the shift fork body 320 away from the connecting frame 310 is slidably connected to the annular groove 410. The rotating part 330 is disposed at the connection between the connecting frame 310 and the shift fork body 320, and the rotating part 330 is rotatably connected to the fixed plate 100. When the output end of the drive member 200 extends, the drive member 200 drives the connecting frame 310 to swing downward, the rotating part 330 rotates relative to the fixed plate 100, and the end of the shift fork body 320 swings to the right to push the tapered sleeve 400 to separate from the fixed sealing seat 30, thus releasing the radial limitation of the tapered sleeve 400 by the fixed sealing seat 30. When the output end of the drive member 200 retracts, the drive member 200 drives the connecting frame 310 to swing upward, the rotating part 330 rotates relative to the fixed plate 100, and the end of the shift fork body 320 swings to the left to push the tapered sleeve 400 to fit against the fixed sealing seat 30. Exemplarily, the connecting frame 310 is perpendicular to the shift fork body 320.

[0044] Optionally, the rotating part 330 has a rotating hole, and the fixed plate 100 is provided with a rotating seat 110. The rotating seat 110 is provided with a pin 130, which passes through the rotating hole and is rotatably connected to the rotating hole. Through the above structure, the reliability of the rotation of the rotating part 330 relative to the fixed plate 100 can be guaranteed, and interference between the rotating part 330 and the fixed plate 100 can be avoided. The fixed plate 100 is provided with a limit screw 120, which can abut against the shift fork body 320. By adjusting the extension length of the limit screw 120, the swing amplitude of the shift fork body 320 can be adjusted, thereby adjusting the left and right swing distance of the shift fork body 320.

[0045] In some embodiments, the tapered sleeve 400 includes a sleeve body 420, a first rubber ring 430, and a second rubber ring 440. An annular groove 410 is formed in the circumferential direction of the sleeve body 420. The first rubber ring 430 is embedded in the inner wall of the sleeve body 420, and the second rubber ring 440 is embedded in the outer wall of the sleeve body 420. By providing the first rubber ring 430 and the second rubber ring 440, the first rubber ring 430 is fitted and sealed with the drive shaft 20, and the second rubber ring 440 is fitted and sealed with the fixed sealing seat 30, thereby forming a transmission sealing effect.

[0046] In order to ensure the sealing effect between the drive shaft 20 and the tapered sleeve 400, in a preferred embodiment, the tapered sleeve 400 further includes a third rubber ring 450, which is embedded in the inner wall of the sleeve body 420 and is in close contact with the drive shaft 20 for sealing.

[0047] The working principle of the vacuum rehumidifier transmission sealing device provided by this invention is as follows:

[0048] When the cigarette box enters or exits the rehumidification chamber 10 of the vacuum rehumidifier, the motor inside the rehumidification chamber 10 drives the roller conveyor to transport the cigarette box to the corresponding position. At this time, the rehumidification chamber 10 does not need to maintain a vacuum. The output end of the drive component 200 extends out, and the drive component 200 drives the connecting frame 310 to swing downward. The rotating part 330 rotates relative to the rotating seat 110 of the fixed plate 100. The end of the shift fork body 320 swings to the right. The end of the shift fork body 320 slides upward in the annular groove 410 of the conical sleeve 400 and pushes the conical sleeve 400 to move to the right relative to the transmission shaft 20. The conical sleeve 400 separates from the fixed sealing seat 30, releasing the radial limit of the fixed sealing seat 30 on the conical sleeve 400, thereby reducing the radial wear of the conical sleeve 400 during the movement of the transmission shaft 20.

[0049] When the smoke box needs vacuum rehumidification, both the front and rear doors of the rehumidification chamber 10 are closed. The interior of the rehumidification chamber 10 needs to maintain a vacuum. The output end of the drive component 200 retracts, and the drive component 200 drives the connecting frame 310 to swing upward. The rotating part 330 rotates relative to the rotating seat 110 of the fixed plate 100. The end of the fork body 320 slides downward in the annular groove 410 of the conical sliding sleeve 400 and pushes the conical sliding sleeve 400 to move to the left relative to the transmission shaft 20. The conical sliding sleeve 400 fits against the fixed sealing seat 30, ensuring the sealing of the rehumidification chamber 10 during vacuum rehumidification and reducing the problems of long evacuation time, increased energy consumption, and failure to meet the requirements of rehumidification effect.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A vacuum regenerating machine drive sealing device, characterized by, The utility model relates to a kind of drive mechanism, including: Fixed plate; Driving piece, the driving piece is set on the fixed plate; Fork assembly, the fork assembly is rotatably connected with the fixed plate, one end of the fork assembly is connected with the output end of the driving piece; Conical sliding sleeve, annular groove is opened in the circumferential direction of the conical sliding sleeve, the annular groove is slidably connected with the other end of the fork assembly; The fork assembly includes: Connecting frame, one end of the connecting frame is movably connected with the output end of the driving piece; Fork body, one end of the fork body is fixedly connected with the end of the connecting frame away from the driving piece, the end of the fork body away from the connecting frame is slidably connected with the annular groove; Rotary part, the rotary part is arranged at the connecting place of the connecting frame and the fork body, and the rotary part is rotatably connected with the fixed plate; The conical sliding sleeve includes: Sliding sleeve body, the annular groove is opened in the circumferential direction of the sliding sleeve body: First rubber ring, the first rubber ring is embedded in the inner wall of the sliding sleeve body; Second rubber ring, the second rubber ring is embedded in the outer wall of the sliding sleeve body; The conical sliding sleeve further includes: Third rubber ring, the third rubber ring is embedded in the inner wall of the sliding sleeve body.

2. The vacuum regenerating machine drive sealing device according to claim 1, characterized in that, The rotary part is provided with a rotating hole, and the fixed plate is provided with a rotating seat, the rotating seat is provided with a pin shaft, the pin shaft passes through the rotating hole, and the pin shaft is rotatably connected with the rotating hole.

3. The vacuum regenerative dryer drive seal apparatus of claim 1, wherein, The connecting frame is perpendicular to the fork body.

4. The vacuum regenerative dryer drive seal apparatus of claim 1, wherein, The fixed plate is provided with a limiting screw, and the limiting screw can abut against the fork body.

5. The vacuum regenerative dryer drive seal apparatus of claim 1, wherein, The driving piece is a pneumatic cylinder.

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