Purging mechanism

Abstract

The utility model relates to a purging mechanism. According to the purging mechanism, a base is provided with a first air inlet hole; the first telescopic rod is arranged on one side, in the first direction, of the base, the first telescopic rod comprises a first outer pipe and a first inner pipe, the first outer pipe extends in the first direction, one end of the first outer pipe is connected with the base, the projection of the first outer pipe on the base surrounds the first air inlet hole, and the first inner pipe is connected into the first outer pipe in a sleeved mode; the cover cap covers the end, away from the base, of the first inner pipe, and an air outlet is formed in the cover cap and communicates with an inner cavity of the first inner pipe; the second telescopic rod is arranged on the base, located in the first inner pipe and connected with the cover cap, and the second telescopic rod is configured to do telescopic motion so that the first inner pipe can slide relative to the first outer pipe in the first direction. In conclusion, according to the blowing mechanism in the embodiment, the size of the blowing mechanism in the first direction is adjustable, so that size miniaturization of the blowing mechanism can be achieved, and the tobacco shred cleaning efficiency is improved on the premise that it is ensured that the tobacco shred is not touched.

Description

Technical Field

[0001] This application relates to the field of purging equipment technology, and in particular to a purging mechanism. Background Technology

[0002] In cigarette manufacturing, a turning machine is used to lift and turn over the tobacco boxes to empty the stored tobacco into a hopper. In related technologies, to reduce the amount of tobacco sticking to the bottom of the boxes after they are turned over, a tobacco box cleaning device is used to clean the bottom of the boxes. This cleaning device includes a lifting module and a blowing mechanism. The lifting module is responsible for conveying the blowing mechanism into the inside of the tobacco box so that the blowing mechanism can blow air onto the bottom of the box, causing the stuck tobacco to fall off.

[0003] In related technologies, to improve cleaning efficiency and ensure that the lifting device can send the blowing mechanism to the highest possible position, the lifting module generally uses a linear piston cylinder with a long stroke. However, in cylinders with a long stroke, the cylinder body is generally long, and the longer cylinder body will touch the tobacco in the feeding bin. Therefore, the lifting module cannot improve cleaning efficiency without touching the tobacco. Utility Model Content

[0004] Therefore, it is necessary to propose a blowing mechanism to address the current problem that the current functional modules cannot improve cleaning efficiency without touching the tobacco.

[0005] A purging mechanism, comprising:

[0006] The base is provided with a first air inlet, which penetrates the base along a first direction;

[0007] A first telescopic rod is disposed on one side of the base along the first direction. The first telescopic rod includes a first outer tube and a first inner tube coaxially disposed. The first outer tube extends along the first direction. One end of the first outer tube is connected to the base. The projection of the first outer tube on the base surrounds the first air inlet. The first inner tube is sleeved inside the first outer tube.

[0008] A cap is placed on the end of the first inner tube away from the base. The cap has an air vent that communicates with the inner cavity of the first inner tube.

[0009] A second telescopic rod is disposed on the base. The second telescopic rod is located inside the first inner tube and connected to the cap. The second telescopic rod is configured to telescopically move along the first direction so that the first inner tube slides relative to the first outer tube along the first direction.

[0010] In some embodiments, the second telescopic rod includes a second outer tube and a second inner tube coaxially arranged, a push rod, and a first slider;

[0011] The second outer tube and the second inner tube are coaxially arranged. The second outer tube extends along the first direction. One end of the second outer tube is connected to the base. The second inner tube is sleeved inside the second outer tube. A first stop is provided at the end of the second inner tube away from the base. A first through hole extending along the first direction is provided on the first stop.

[0012] The push rod passes through the first through hole, with one end of the push rod located inside the second inner tube and the other end connected to the cap; the first slider is sleeved on the outer periphery of the push rod portion located inside the second inner tube, and the first slider is located between the inner wall of the second inner tube and the outer periphery of the push rod.

[0013] In some embodiments, the second telescopic rod includes a movable tube coaxially disposed with the second outer tube, the movable tube being sleeved inside the second outer tube, and the second inner tube being sleeved inside the movable tube.

[0014] In some embodiments, the second telescopic rod includes a second slider.

[0015] The movable tube is provided with a second stop at one end away from the base along the first direction. The second stop is provided with a second through hole extending along the first direction. The second inner tube passes through the second through hole.

[0016] The second slider is sleeved on the outer periphery of the second inner tube portion located inside the movable tube, and the second slider is located between the inner wall of the movable tube and the outer wall of the second inner tube.

[0017] In some embodiments, the second telescopic rod includes a third slider;

[0018] The second outer tube has a third stop at one end away from the base along the first direction, and the third stop has a third through hole extending along the first direction, through which the movable tube passes.

[0019] The third slider is sleeved on the outer periphery of the movable tube portion located inside the second outer tube, and the third slider is located between the inner wall of the second outer tube and the outer wall of the movable tube.

[0020] In some embodiments, the second inner tube includes a first sleeve and a second sleeve coaxially arranged, the second sleeve is located inside the first sleeve, the outer diameter of the second sleeve is smaller than the inner diameter of the first sleeve, the second slider is located at one end of the first sleeve near the base and is sleeved on the outer periphery of the second sleeve portion located inside the movable tube, and the first stop is located on the same side of the first sleeve and the second sleeve away from the base.

[0021] The base includes a second air inlet, and the gap between the inner wall of the first sleeve and the outer wall of the second sleeve communicates with the second air inlet.

[0022] In some embodiments, the movable tube includes a third sleeve and a fourth sleeve arranged coaxially, the fourth sleeve being located inside the third sleeve, the outer diameter of the fourth sleeve being smaller than the inner diameter of the third sleeve, the third slider being located at one end of the third sleeve near the base and sleeved on the outer periphery of the fourth sleeve portion located inside the second inner tube, and the second stop being located on the same side of the third sleeve and the fourth sleeve away from the base.

[0023] The second outer tube includes a fifth sleeve and a sixth sleeve arranged coaxially. The sixth sleeve is located inside the fifth sleeve, and the outer diameter of the sixth sleeve is smaller than the inner diameter of the fifth sleeve. Both the fifth sleeve and the sixth sleeve are connected to the base. The third stop is located on the same side of the fifth sleeve and the sixth sleeve away from the base. The gap between the inner wall of the fifth sleeve and the outer wall of the sixth sleeve communicates with the second air inlet.

[0024] In some embodiments, the base is provided with a third air inlet, the third air inlet penetrates the base along the first direction, and the projection of the second inner tube on the base surrounds the third air inlet.

[0025] In some embodiments, the first telescopic rod includes a first intermediate tube extending along the first direction;

[0026] The first outer tube is provided with a first blocking member, and the first blocking member is provided with a first guide hole extending along the first direction. The first intermediate tube passes through the first guide hole, and the first intermediate tube portion is located inside the first outer tube. The outer periphery of the first intermediate tube portion located inside the first outer tube is provided with a first sliding member, and the first sliding member is located between the inner wall of the first outer tube and the outer wall of the first intermediate tube.

[0027] The first inner tube is fitted inside the first intermediate tube.

[0028] In some embodiments, the first telescopic rod includes a second intermediate tube and a third intermediate tube arranged coaxially, wherein the second intermediate tube and the first intermediate tube are arranged coaxially.

[0029] The first intermediate tube is provided with a second blocking member, and the second blocking member is provided with a second guide hole extending along the first direction. The second intermediate tube passes through the second guide hole, and the second intermediate tube portion is located inside the first intermediate tube. The outer periphery of the second intermediate tube portion located inside the first intermediate tube is provided with a second sliding member, and the second sliding member is located between the inner wall of the first intermediate tube and the outer wall of the second intermediate tube.

[0030] The second intermediate tube is provided with a third blocking member, and the third blocking member is provided with a third guide hole extending along the first direction. The third intermediate tube passes through the third guide hole. A third sliding member is sleeved on the outer periphery of the third intermediate tube portion located inside the second intermediate tube. The third sliding member is located between the inner wall of the second intermediate tube and the outer wall of the third intermediate tube. The first inner tube is sleeved inside the third intermediate tube.

[0031] In this embodiment, the second telescopic rod inside the first inner tube of the purging mechanism moves in a telescopic motion along a first direction. This telescopic motion can cause the cap to move synchronously, thereby changing the distance between the cap and the base in the first direction. This facilitates the cap moving closer to the bottom of the tobacco box along the first direction when the purging mechanism is located inside the tobacco box, changing the distance between the cap and the bottom of the tobacco box, and ensuring that the cap is as close as possible to the bottom of the tobacco box without contacting the tobacco at the bottom of the box.

[0032] During the above process, the first inner tube extends the first outer tube away from the base under the action of the cap until the second telescopic rod stops extending and retracting. When the second telescopic rod stops extending and retracting and the cap stops moving, the cleaning gas enters the first outer tube through the first air inlet on the base, and then enters the first inner tube from the first outer tube. Finally, the gas is ejected from the air outlet on the cap at one end of the first inner tube, blowing the tobacco off the bottom of the tobacco box, thus completing the cleaning of the tobacco box.

[0033] In summary, the blowing mechanism in this embodiment is adjustable in the first direction because the size of the first inner tube extending beyond the first outer tube is controlled by the extension and retraction of the second telescopic rod. Therefore, the blowing mechanism can achieve miniaturization while ensuring a large stroke, and improve the cleaning efficiency of the tobacco at the bottom of the tobacco box without touching the tobacco. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the purging mechanism in one embodiment of this application.

[0036] Figure label:

[0037] Purging mechanism 1;

[0038] Base 10, first air inlet 110, second air inlet 120, third air inlet 130;

[0039] First telescopic rod 20, first outer tube 210, first blocking member 211, first inner tube 220, first intermediate tube 230, second blocking member 231, first sliding member 240, second intermediate tube 250, third blocking member 251, second sliding member 260, third intermediate tube 270, fourth blocking member 271, third sliding member 280, fourth sliding member 290;

[0040] 30 blocks;

[0041] Second telescopic rod 40, second outer tube 410, third stop 411, fifth sleeve 412, sixth sleeve 413, second inner tube 420, first stop 421, first sleeve 422, second sleeve 423, push rod 430, first slider 440, movable tube 450, second stop 451, third sleeve 452, fourth sleeve 453, second slider 460, third slider 470;

[0042] Air outlet 50. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0049] Please see Figure 1 , Figure 1 A schematic diagram of the purging mechanism in one embodiment of this application is shown. One embodiment of this application provides a purging mechanism 1, comprising: a base 10, a first telescopic rod 20, a cap 30, and a second telescopic rod 40. The base 10 is provided with a first air inlet 110, which penetrates the base 10 along a first direction. The first telescopic rod 20 is disposed on one side of the base 10 along the first direction, and includes a first outer tube 210 and a first inner tube 220 coaxially arranged. The first outer tube 210 extends along the first direction, and one end of the first outer tube 210 is connected to the base 10. The projection of the first outer tube 210 on the base 10 surrounds the first air inlet 110. The first inner tube 220 is sleeved inside the first outer tube 210. The cap 30 covers the end of the first inner tube 220 away from the base 10, and the cap 30 is provided with an air outlet (not shown in the figure), which communicates with the inner cavity of the first inner tube 220. The second telescopic rod 40 is disposed on the base 10. The second telescopic rod 40 is located inside the first inner tube 220 and is connected to the cap 30. The second telescopic rod 40 is configured to telescopically move along the first direction so that the first inner tube 220 slides relative to the first outer tube 210 along the first direction.

[0050] In this embodiment, the second telescopic rod 40 inside the first inner tube 220 of the purging mechanism 1 extends and retracts along the first direction. The second telescopic rod 40 can drive the cap 30 to move synchronously, so that the distance between the cap 30 and the base 10 changes in the first direction. This makes it easier for the cap 30 to move closer to the bottom of the tobacco box along the first direction when the purging mechanism 1 is located inside the tobacco box (not shown), thereby changing the distance between the cap 30 and the bottom of the tobacco box and ensuring that the cap 30 is as close as possible to the bottom of the tobacco box without contacting the tobacco at the bottom of the tobacco box.

[0051] During the above process, the first inner tube 220 extends the first outer tube 210 away from the base 10 under the action of the cap 30 until the second telescopic rod 40 stops extending and retracting. When the second telescopic rod 40 stops extending and retracting and the cap 30 stops moving, the cleaning gas enters the first outer tube 210 through the first air inlet 110 on the base 10, and then enters the first inner tube 220 from the first outer tube 210. Finally, the gas is ejected from the air outlet on the cap 30 at one end of the first inner tube 220, blowing the tobacco from the bottom of the tobacco box, thus completing the cleaning of the tobacco box.

[0052] In summary, the blowing mechanism 1 in this embodiment can be miniaturized while ensuring a large stroke, because the size of the first inner tube 220 extending out of the first outer tube 210 is controlled by the extension and retraction of the second telescopic rod 40. The size of the blowing mechanism 1 in the first direction is adjustable. This ensures that the cleaning efficiency of the tobacco at the bottom of the tobacco box is improved without touching the tobacco.

[0053] Please see Figure 1 In some embodiments, the second telescopic rod 40 includes a second outer tube 410 and a second inner tube 420 coaxially arranged, a push rod 430, and a first slider 440; the second outer tube 410 and the second inner tube 420 are coaxially arranged, the second outer tube 410 extends along a first direction, one end of the second outer tube 410 is connected to the base 10, the second inner tube 420 is sleeved inside the second outer tube 410, and the end of the second inner tube 420 away from the base 10 is provided with a first stop 421, and the first stop 421 is provided with a first through hole (not shown in the figure) extending along the first direction; the push rod 430 passes through the first through hole, one end of the push rod 430 is located inside the second inner tube 420, and the other end is connected to the cap 30; the first slider 440 is sleeved on the outer periphery of the portion of the push rod 430 located inside the second inner tube 420, and the first slider 440 is located between the inner wall of the second inner tube 420 and the outer periphery of the push rod 430.

[0054] In this embodiment, when the second telescopic rod 40 extends, the push rod 430 moves away from the base 10 along the first direction and drives the first slider 440 to move synchronously. Under the drive of the push rod 430, the first slider 440 moves closer to the first stop 421 along the first direction and abuts against the first stop 421, pushing the first stop 421 away from the base 10, so that the first stop 421 can drive the end of the second inner tube 420 away from the base 10 to extend out of the second outer tube 410.

[0055] Please see Figure 1 In some embodiments, the second telescopic rod 40 includes a movable tube 450 coaxially disposed with the second outer tube 410, the movable tube 450 being sleeved inside the second outer tube 410, and the second inner tube 420 being sleeved inside the movable tube 450.

[0056] In this embodiment, when the second telescopic rod 40 extends, the end of the second inner tube 420 away from the base 10 extends out of the movable tube 450, and drives the movable tube 450 to extend out of the second outer tube 410.

[0057] Please see Figure 1 In some embodiments, the second telescopic rod 40 includes a second slider 460, and the movable tube 450 is provided with a second stop 451 at one end away from the base 10 along the first direction. The second stop 451 is provided with a second through hole (not shown in the figure) extending along the first direction, and the second inner tube 420 passes through the second through hole. The second slider 460 is sleeved on the outer periphery of the portion of the second inner tube 420 located inside the movable tube 450, and the second slider 460 is located between the inner wall of the movable tube 450 and the outer wall of the second inner tube 420.

[0058] In this embodiment, as the end of the second inner tube 420 away from the base 10 extends out of the movable tube 450, the second slider 460 on the second inner tube 420 will approach the second stop 451 along the first direction and abut against the second stop 451, pushing the second stop 451 away from the base 10 along the first direction, so that the second stop 451 can drive the end of the movable tube 450 away from the base 10 to extend out of the second outer tube 410.

[0059] Please see Figure 1 In some embodiments, the second telescopic rod 40 includes a third slider 470; the second outer tube 410 is provided with a third stop 411 at one end away from the base 10 along the first direction, and the third stop 411 is provided with a third through hole (not shown in the figure) extending along the first direction, and the movable tube 450 passes through the third through hole; the third slider 470 is sleeved on the outer periphery of the movable tube 450 portion located inside the second outer tube 410, and the third slider 470 is located between the inner wall of the second outer tube 410 and the outer wall of the movable tube 450.

[0060] In this embodiment, as the end of the movable tube 450 away from the base 10 extends out of the second outer tube 410, the third slider 470 on the movable tube 450 will approach the third stop 411 along the first direction and abut against the third stop 411, finally stopping its movement under the obstruction of the third stop 411. The third stop 411 blocks the movement of the third slider 470, preventing the movable tube 450 from fully extending out of the second outer tube 410.

[0061] Please see Figure 1In some embodiments, the second inner tube 420 includes a first sleeve 422 and a second sleeve 423 coaxially arranged, the second sleeve 423 being located inside the first sleeve 422, the outer diameter of the second sleeve 423 being smaller than the inner diameter of the first sleeve 422, the second slider 460 being located at one end of the first sleeve 422 near the base 10 and sleeved on the outer periphery of the portion of the second sleeve 423 located inside the movable tube 450, the first stop 421 being located on the same side of the first sleeve 422 and the second sleeve 423 away from the base 10; the base 10 includes a second air inlet 120, the gap between the inner wall of the first sleeve 422 and the outer wall of the second sleeve 423 communicating with the second air inlet 120.

[0062] In this embodiment, when the extended second telescopic rod 40 is retracted, compressed gas enters the gap between the inner wall of the first sleeve 422 and the outer wall of the second sleeve 423 through the second air inlet 120, and enters the gap between the end of the second sleeve 423 away from the base 10 and the first stop 421 through the gap between the inner wall of the first sleeve 422 and the outer wall of the second sleeve 423; finally, it enters the gap between the first stop 421 and the first slider 440 from the gap between the end of the second sleeve 423 away from the base 10 and the first stop 421.

[0063] The compressed gas entering the gap between the first stop 421 and the first slider 440 will apply a thrust to the first slider 440 along the first direction towards the base 10, pushing the first slider 440 towards the base 10 along the first direction, so that the first slider 440 drives the push rod 430 to retract into the second sleeve 423 along the first direction, thereby causing the push rod 430 to drive the cap 30 towards the base 10 along the first direction.

[0064] In some embodiments, a first sealing groove (not shown) is provided on the inner wall of the first through hole. The first sealing groove is arranged around the axis of the first through hole, and a first sealing ring (not shown) is contained in the first sealing groove.

[0065] In some embodiments, a second sealing groove (not shown) is provided on the outer periphery of the first slider 440. The second sealing groove is arranged around the axis of the first slider 440 and contains a second sealing ring (not shown). The axis of the first slider 440 coincides with the axis of the first through hole.

[0066] Please see Figure 1In some embodiments, the movable tube 450 includes a third sleeve 452 and a fourth sleeve 453 coaxially arranged. The fourth sleeve 453 is located inside the third sleeve 452, and the outer diameter of the fourth sleeve 453 is smaller than the inner diameter of the third sleeve 452. The third slider 470 is located at one end of the third sleeve 452 near the base 10 and is sleeved on the outer periphery of the portion of the fourth sleeve 453 located inside the second inner tube 420. The second stop 451 is located on the same side of the third sleeve 452 and the fourth sleeve 453 away from the base 10. The second outer tube 410 includes a fifth sleeve 412 and a sixth sleeve 413 coaxially arranged. The sixth sleeve 413 is located inside the fifth sleeve 412. The outer diameter of the sixth sleeve 413 is smaller than the inner diameter of the fifth sleeve 412. Both the fifth sleeve 412 and the sixth sleeve 413 are connected to the base 10. The third stop block 411 is located on the same side of the fifth sleeve 412 and the sixth sleeve 413 away from the base 10. The gap between the inner wall of the fifth sleeve 412 and the outer wall of the sixth sleeve 413 communicates with the second air inlet 120.

[0067] In this embodiment, when the extended second telescopic rod 40 is retracted, compressed gas enters the gap between the inner wall of the fifth sleeve 412 and the outer wall of the sixth sleeve 413 through the second air inlet 120, and then enters the gap between the end of the sixth sleeve 413 away from the base 10 and the third stop 411 through the gap between the inner wall of the fifth sleeve 412 and the outer wall of the sixth sleeve 413. Finally, it enters the gap between the third stop 411 and the third slider 470 from the gap between the end of the sixth sleeve 413 away from the base 10 and the third stop 411.

[0068] The compressed gas in the gap between the third stop 411 and the third slider 470 will flow into the gap between the end of the third sleeve 452 near the base 10 and the third slider 470, and then enter the gap between the inner wall of the third sleeve 452 and the outer wall of the fourth sleeve 453 through the gap between the end of the third sleeve 452 near the base 10 and the third slider 470. Finally, it will enter the gap between the second stop 451 and the second slider 460 from the gap between the end of the fourth sleeve 453 away from the base 10 and the second stop 451.

[0069] The compressed gas in the gap between the second stop 451 and the second slider 460 will flow into the gap between the end of the second sleeve 423 near the base 10 and the second slider 460, and enter the gap between the inner wall of the first sleeve 422 and the outer wall of the second sleeve 423 through the gap between the end of the second sleeve 423 near the base 10 and the second slider 460.

[0070] In some embodiments, a third sealing groove (not shown) is provided on the inner wall of the second through hole. The third sealing groove is arranged around the axis of the second through hole, and a third sealing ring (not shown) is contained within the third sealing groove.

[0071] In some embodiments, a fourth sealing groove (not shown) is provided on the outer periphery of the second slider 460. The fourth sealing groove is arranged around the axis of the second slider 460 and contains a fourth sealing ring (not shown). The axis of the second slider 460 coincides with the axis of the second through hole.

[0072] In some embodiments, a fifth sealing groove (not shown) is provided on the inner wall of the third through hole. The fifth sealing groove is arranged around the axis of the third through hole, and a fifth sealing ring (not shown) is contained in the fifth sealing groove.

[0073] In some embodiments, a sixth sealing groove (not shown) is provided on the outer periphery of the third slider 470. The sixth sealing groove is arranged around the axis of the third slider 470 and contains a sixth sealing ring (not shown). The axis of the third slider 470 coincides with the axis of the third through hole.

[0074] Please see Figure 1 In some embodiments, the base 10 is provided with a third air inlet 130, which penetrates the base 10 along a first direction, and the projection of the second inner tube 420 on the base 10 surrounds the third air inlet 130.

[0075] In this embodiment, when the second telescopic rod 40 extends, it pushes the gas into the second inner tube 420 through the third air inlet 130, and pushes the push rod 430 away from the base 10 in the first direction.

[0076] Please see Figure 1 In some embodiments, the first telescopic rod 20 includes a first intermediate tube 230 extending in a first direction; a first blocking member 211 is provided inside the first outer tube 210, and the first blocking member 211 is provided with a first guide hole (not shown in the figure) extending in the first direction; the first intermediate tube 230 passes through the first guide hole; a portion of the first intermediate tube 230 is located inside the first outer tube 210; a first sliding member 240 is sleeved on the outer periphery of the portion of the first intermediate tube 230 located inside the first outer tube 210; the first sliding member 240 is located between the inner wall of the first outer tube 210 and the outer wall of the first intermediate tube 230; and a first inner tube 220 is sleeved inside the first intermediate tube 230.

[0077] In this embodiment, when the second telescopic rod 40 pushes the cap 30 away from the base 10 in the first direction, the cap 30 causes the first inner tube 220 to extend out of the first intermediate tube 230 in the first direction, and the first inner tube 220 causes the first intermediate tube 230 to extend out of the first outer tube 210 in the first direction. During this process, the first intermediate tube 230 causes the first sliding member 240 to move closer to the first blocking member 211 in the first direction until the first sliding member 240 contacts the first blocking member 211. Under the obstruction of the first blocking member 211, the first intermediate tube 230 stops moving.

[0078] In some embodiments, the inner wall of the first guide hole is provided with a first receiving groove (not shown in the figure), the first receiving groove is arranged around the axis of the first guide hole, and a first sealing element (not shown in the figure) is provided in the first receiving groove.

[0079] In some embodiments, a second receiving groove (not shown) is provided on the outer periphery of the first slider 240, the second receiving groove is arranged around the axis of the first slider 240, and a second sealing member (not shown) is provided in the second receiving groove.

[0080] Please see Figure 1 In some embodiments, the first telescopic rod 20 includes a second intermediate tube 250 and a third intermediate tube 270 coaxially arranged, with the second intermediate tube 250 and the first intermediate tube 230 coaxially arranged; a second blocking member 231 is provided inside the first intermediate tube 230, and a second guide hole (not shown in the figure) extending in a first direction is provided on the second blocking member 231; the second intermediate tube 250 passes through the second guide hole, and a portion of the second intermediate tube 250 is located inside the first intermediate tube 230; a second sliding member 260 is sleeved on the outer periphery of the portion of the second intermediate tube 250 located inside the first intermediate tube 230. The moving member 260 is located between the inner wall of the first intermediate tube 230 and the outer wall of the second intermediate tube 250; a third blocking member 251 is provided inside the second intermediate tube 250, and a third guide hole (not shown in the figure) extending in the first direction is provided on the third blocking member 251. The third intermediate tube 270 passes through the third guide hole. A third sliding member 280 is sleeved on the outer periphery of the third intermediate tube 270 portion located inside the second intermediate tube 250. The third sliding member 280 is located between the inner wall of the second intermediate tube 250 and the outer wall of the third intermediate tube 270; the first inner tube 220 is sleeved inside the third intermediate tube 270.

[0081] In this embodiment, the first inner tube 220 extends the third intermediate tube 270 along the first direction under the drive of the cap 30. The third intermediate tube 270 extends the second intermediate tube 250 along the first direction under the drive of the first outer tube 210. When the third intermediate tube 270 moves, it drives the third sliding member 280 to approach the third blocking member 251 along the first direction, so that the third sliding member 280 contacts the third blocking member 251, thereby facilitating the third sliding member 280 to push the third blocking member 251 away from the base 10. With the help of the third blocking member 251, the second intermediate tube 250 extends the first intermediate tube 230 along the first direction.

[0082] During the process of the second intermediate tube 250 extending out of the first intermediate tube 230, the second intermediate tube 250 drives the second sliding member 260 to approach the second blocking member 231 along the first direction, so that the second sliding member 260 contacts the second blocking member 231, thereby facilitating the second sliding member 260 to push the second blocking member 231 away from the base 10, and with the help of the second blocking member 231, the first intermediate tube 230 extends out of the first outer tube 210 along the first direction.

[0083] In some embodiments, a fourth blocking member 271 is provided at one end of the third intermediate tube 270 away from the base 10 along the first direction. The fourth blocking member 271 is provided with a fourth guide hole (not shown in the figure) extending along the first direction. The first inner tube 220 passes through the fourth guide hole. A fourth sliding member 290 is provided on the outer periphery of the portion of the first inner tube 220 located inside the third intermediate tube 270. The fourth sliding member 290 is located between the outer wall of the portion of the first inner tube 220 inside the third intermediate tube 270 and the inner wall of the third intermediate tube 270.

[0084] In some embodiments, the inner wall of the second guide hole is provided with a third receiving groove (not shown in the figure), the third receiving groove is arranged around the axis of the second guide hole, and a third sealing element (not shown in the figure) is provided in the third receiving groove.

[0085] In some embodiments, the outer periphery of the second slider 260 is provided with a fourth receiving groove (not shown in the figure), the fourth receiving groove is arranged around the axis of the second slider 260, and a fourth sealing member (not shown in the figure) is provided in the fourth receiving groove.

[0086] In some embodiments, the inner wall of the third guide hole is provided with a fifth receiving groove (not shown in the figure), the fifth receiving groove is arranged around the axis of the third guide hole, and a fifth sealing element (not shown in the figure) is provided in the fifth receiving groove.

[0087] In some embodiments, a sixth receiving groove (not shown) is provided on the outer periphery of the third slider 280, the sixth receiving groove is arranged around the axis of the third slider 280, and a sixth sealing member (not shown) is provided in the sixth receiving groove.

[0088] In some embodiments, the purging mechanism 1 includes an air outlet pipe 50, which passes through an air outlet hole on the cap 30, allowing the cleaning gas entering the first inner tube 220 to flow out through the air outlet pipe 50.

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A purge mechanism, characterized by, The purging mechanism includes: The base is provided with a first air inlet, which penetrates the base along a first direction; A first telescopic rod is disposed on one side of the base along the first direction. The first telescopic rod includes a first outer tube and a first inner tube coaxially disposed. The first outer tube extends along the first direction. One end of the first outer tube is connected to the base. The projection of the first outer tube on the base surrounds the first air inlet. The first inner tube is sleeved inside the first outer tube. A cap is placed on the end of the first inner tube away from the base, and the cap is provided with an air vent that communicates with the inner cavity of the first inner tube. A second telescopic rod is disposed on the base. The second telescopic rod is located inside the first inner tube and connected to the cap. The second telescopic rod is configured to telescopically move along the first direction so that the first inner tube slides relative to the first outer tube along the first direction.

2. The purge mechanism of claim 1, wherein, The second telescopic rod includes a second outer tube and a second inner tube arranged coaxially, a push rod, and a first slider; The second outer tube and the second inner tube are coaxially arranged. The second outer tube extends along the first direction. One end of the second outer tube is connected to the base. The second inner tube is sleeved inside the second outer tube. A first stop is provided at the end of the second inner tube away from the base. A first through hole extending along the first direction is provided on the first stop. The push rod passes through the first through hole, with one end of the push rod located inside the second inner tube and the other end connected to the cap; the first slider is sleeved on the outer periphery of the push rod portion located inside the second inner tube, and the first slider is located between the inner wall of the second inner tube and the outer periphery of the push rod.

3. A purge mechanism according to claim 2, characterised in that, The second telescopic rod includes a movable tube coaxially arranged with the second outer tube, the movable tube being sleeved inside the second outer tube, and the second inner tube being sleeved inside the movable tube.

4. A purge mechanism according to claim 3, characterised in that, The second telescopic rod includes a second slider. The movable tube is provided with a second stop at one end away from the base along the first direction. The second stop is provided with a second through hole extending along the first direction. The second inner tube passes through the second through hole. The second slider is sleeved on the outer periphery of the second inner tube portion located inside the movable tube, and the second slider is located between the inner wall of the movable tube and the outer wall of the second inner tube.

5. A purge mechanism according to claim 4, characterised in that, The second telescopic rod includes a third slider; The second outer tube has a third stop at one end away from the base along the first direction, and the third stop has a third through hole extending along the first direction, through which the movable tube passes. The third slider is sleeved on the outer periphery of the movable tube portion located inside the second outer tube, and the third slider is located between the inner wall of the second outer tube and the outer wall of the movable tube.

6. A purge mechanism according to claim 5, characterised in that, The second inner tube includes a first sleeve and a second sleeve arranged coaxially. The second sleeve is located inside the first sleeve. The outer diameter of the second sleeve is smaller than the inner diameter of the first sleeve. The second slider is located at the end of the first sleeve near the base and is sleeved on the outer periphery of the second sleeve portion located inside the movable tube. The first stop is located on the same side of the first sleeve and the second sleeve away from the base. The base includes a second air inlet, and the gap between the inner wall of the first sleeve and the outer wall of the second sleeve communicates with the second air inlet.

7. A purge mechanism according to claim 6, characterised in that, The movable tube includes a third sleeve and a fourth sleeve arranged coaxially. The fourth sleeve is located inside the third sleeve. The outer diameter of the fourth sleeve is smaller than the inner diameter of the third sleeve. The third slider is located at the end of the third sleeve near the base and is sleeved on the outer periphery of the fourth sleeve portion located inside the second inner tube. The second stop is located on the same side of the third sleeve and the fourth sleeve away from the base. The second outer tube includes a fifth sleeve and a sixth sleeve arranged coaxially. The sixth sleeve is located inside the fifth sleeve, and the outer diameter of the sixth sleeve is smaller than the inner diameter of the fifth sleeve. Both the fifth sleeve and the sixth sleeve are connected to the base. The third stop is located on the same side of the fifth sleeve and the sixth sleeve away from the base. The gap between the inner wall of the fifth sleeve and the outer wall of the sixth sleeve communicates with the second air inlet.

8. The purge mechanism of claim 2, wherein, The base is provided with a third air inlet, which penetrates the base along the first direction. The projection of the second inner tube on the base surrounds the third air inlet.

9. The purge mechanism of claim 1, wherein, The first telescopic rod includes a first intermediate tube extending along the first direction; The first outer tube is provided with a first blocking member, and the first blocking member is provided with a first guide hole extending along the first direction. The first intermediate tube passes through the first guide hole, and the first intermediate tube portion is located inside the first outer tube. The outer periphery of the first intermediate tube portion located inside the first outer tube is provided with a first sliding member, and the first sliding member is located between the inner wall of the first outer tube and the outer wall of the first intermediate tube. The first inner tube is fitted inside the first intermediate tube.

10. A purge mechanism according to claim 9, characterised in that, The first telescopic rod includes a second intermediate tube and a third intermediate tube arranged coaxially, with the second intermediate tube and the first intermediate tube being coaxially arranged. The first intermediate tube is provided with a second blocking member, and the second blocking member is provided with a second guide hole extending along the first direction. The second intermediate tube passes through the second guide hole, and the second intermediate tube portion is located inside the first intermediate tube. The outer periphery of the second intermediate tube portion located inside the first intermediate tube is provided with a second sliding member, and the second sliding member is located between the inner wall of the first intermediate tube and the outer wall of the second intermediate tube. The second intermediate tube is provided with a third blocking member, and the third blocking member is provided with a third guide hole extending along the first direction. The third intermediate tube passes through the third guide hole. A third sliding member is sleeved on the outer periphery of the third intermediate tube portion located inside the second intermediate tube. The third sliding member is located between the inner wall of the second intermediate tube and the outer wall of the third intermediate tube. The first inner tube is sleeved inside the third intermediate tube.

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