Intelligent temperature control traditional Chinese medicine fumigation therapeutic apparatus

Abstract

The invention discloses an intelligent temperature control traditional Chinese medicine fumigation therapeutic apparatus, and belongs to the technical field of traditional Chinese medicine fumigation, the intelligent temperature control traditional Chinese medicine fumigation therapeutic apparatus comprises a main machine, a multi-joint supporting arm arranged on the main machine and a fumigation head arranged at the end part of the multi-joint supporting arm, the fumigation head comprises a base shell, a base ring and a plurality of fumigation units, a first abdicating hole is formed in the base shell; the base ring is rotationally mounted on the base shell; the multiple fumigation units are arranged on the base ring in a central symmetry mode, and each fumigation unit comprises a lifting rod and a fumigation cover. The multiple fumigation units are designed and evenly arranged on the base ring in the circumferential direction, so that the fumigation units can be distributed around the limbs of the patient, when the base ring rotates on the base shell, the fumigation units can also rotate around the limbs of the patient, and therefore the fumigation position is changed, the periphery of the limbs of the patient can be fumigated, and steam dissipation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of traditional Chinese medicine fumigation, and in particular to an intelligent temperature-controlled traditional Chinese medicine fumigation therapeutic instrument. Background Art

[0002] The Chinese medicine fumigation therapy device is a device that generates Chinese medicine steam by heating the Chinese medicine liquid, and uses the drug ions in the steam to fumigate the skin or mucous membranes. These drug ions can be absorbed and penetrated through the skin, mucous membranes and acupuncture points, thereby playing a therapeutic role. The current Chinese medicine fumigation therapy device generally includes a host and a fumigation head. The host can heat the medicine liquid to make the medicine liquid produce steam, and the steam is sprayed to the patient's lesion site through the fumigation head for fumigation. The fumigation head generally includes a guide hood, which is equipped with a spray nozzle and an infrared temperature sensor. The guide hood guides the steam to move toward the lesion. The infrared temperature sensor is used to detect the temperature of the lesion site, feed it back to the host, and adjust the steam temperature.

[0003] The disadvantage of the current traditional Chinese medicine fumigation therapy device is that during fumigation, the guide cover cannot be close to or fit the patient's skin, resulting in a large amount of steam escaping and low utilization rate of effective ingredients. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide an intelligent temperature-controlled Chinese medicine fumigation therapeutic instrument to reduce the escape of Chinese medicine vapor and improve the fumigation effect.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an intelligent temperature-controlled Chinese medicine fumigation therapeutic device, comprising a host, a multi-joint support arm arranged on the host, and a fumigation head arranged at the end of the multi-joint support arm, wherein the fumigation head comprises: A base shell, the base shell is annular, the base shell is fixedly connected to the multi-joint support arm, and a first clearance hole is arranged on the base shell; A base ring, the base ring being rotatably mounted on the base shell; A plurality of fumigation units are centrally symmetrically arranged on a base ring, the fumigation units include a lifting rod and a fumigation hood, the lifting rod has the freedom to move radially along the base ring, the fumigation hood is arranged at one end of the lifting rod close to the center of the base ring, the fumigation hood has the freedom to swing on the lifting rod, the bottom of the fumigation hood is open, two massage rollers, a guide roller and a heating roller are rotatably installed in the fumigation hood, the massage roller, the guide roller and the heating roller are wound with a hygroscopic belt, the massage roller partially extends out of the fumigation hood, the hygroscopic belt between the two massage rollers and the fumigation hood cooperate to form a fumigation chamber, and an air supply pipe connected to the fumigation chamber is arranged on one side of the fumigation hood.

[0006] Preferably, the lifting rod passes through the base ring in the radial direction of the base ring and slides with the base ring. An adjusting disk is rotatably mounted on the base ring. A plurality of driving grooves are provided on the adjusting disk. One end of the lifting rod away from the fumigation hood is slidably mounted in the driving groove. When the adjusting disk rotates on the base ring, the driving groove drives the lifting rod to move in the radial direction of the base ring.

[0007] Preferably, a plurality of fan-shaped slide rails are fixed on the circumferential surface of the base ring, the adjustment disk is slidably matched with the slide rails, one of the slide rails is provided with teeth, an adjustment rod is rotatably mounted on the adjustment disk, and an adjustment gear meshing with the teeth is fixed on the adjustment rod.

[0008] Preferably, a locking member for limiting the rotation of the adjusting rod on the adjusting disk is provided at one end of the adjusting rod.

[0009] Preferably, a first protective cover body for covering the adjusting disk is fixed on the base ring, a second protective cover body is fixed on the side of the base ring away from the base shell, and a second clearance hole corresponding to the first clearance hole is formed on the second protective cover body.

[0010] Preferably, the lifting rod comprises an outer rod and an inner rod, one end of the inner rod is movably plugged into the outer rod, and the other end is connected to the fumigation hood; a spring is arranged inside the outer rod to resist the inner rod.

[0011] Preferably, the fumigation hood is hinged at the end of the inner rod, and a limiting portion is fixed on the inner rod, and the limiting portion is used to limit the swinging angle of the fumigation hood with the hinge axis as the center.

[0012] Preferably, a first annular cavity is provided on the base shell, a second annular cavity which is slidingly sealed with the first annular cavity is provided on the base ring, an air pipe which is in communication with the first annular cavity is connected to the base shell, the air pipe is connected to the steam generating mechanism in the main unit, and the air pipes in all the fumigation units are in communication with the second annular cavity.

[0013] Preferably, a gear ring is fixed on the base ring, a driving gear meshing with the gear ring is rotatably mounted on the base shell, and a motor for driving the driving gear to rotate is fixed on the base shell.

[0014] Preferably, the air supply pipe is flexible.

[0015] The beneficial effects of the present invention are: The present invention designs a plurality of fumigation units, which are evenly arranged on the base ring in the circumferential direction, so that the fumigation units can be distributed around the patient's limbs. When the base ring rotates on the base shell, the fumigation units can also rotate around the patient's limbs, thereby changing the fumigation position, so that the patient's limbs can be fumigated all around; the lifting rod can move along the radial direction of the base ring, so that the fumigation cover is close to or away from the axis of the base ring, so that the distance between the fumigation covers is adjusted accordingly according to the thickness of the patient's limbs, so that the fumigation cover fits the patient's skin surface, thereby greatly reducing the escape of traditional Chinese medicine vapor and improving the utilization rate of traditional Chinese medicine liquid; the massage roller arranged in the fumigation cover of the present invention can press the moisture absorption belt against the patient's skin surface, so as to absorb the liquefied traditional Chinese medicine liquid in time, and the heating roller can heat the traditional Chinese medicine liquid again, increase the amount of traditional Chinese medicine vapor in the fumigation cover, and further improve the fumigation effect and the utilization rate of traditional Chinese medicine liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the overall structure of the intelligent temperature-controlled Chinese medicine fumigation therapy device provided in an embodiment of the present invention.

[0018] Figure 2 This is a front view of the fumigation head of the present invention after the first protective cover is removed.

[0019] Figure 3 This is a rear-view stereoscopic view of the fumigation head of the present invention after the first protective cover is removed.

[0020] Figure 4 This is a top view of the fumigation head of the present invention after the first protective cover is removed.

[0021] Figure 5 for Figure 4 Cross-sectional view at AA in the middle.

[0022] Figure 6 for Figure 5 A partial enlarged view of point A in the middle.

[0023] Figure 7 This is a front-view stereoscopic view of the fumigation head of the present invention after the first protective cover body and the second protective cover body are removed.

[0024] Figure 8 It is a three-dimensional diagram of the fumigation unit of the present invention.

[0025] Fig. 9It is a schematic structural diagram of the cross-sectional view of the fumigation hood in the fumigation unit of the present invention.

[0026] Description of reference numerals: 1. Main machine, 2. Multi-joint support arm, 3. Base shell, 4. First clearance hole, 5. Base ring, 6. Lifting rod, 7. Fumigation hood, 8. Massage roller, 9. Guide roller, 10. Heating roller, 11. Moisture absorption belt, 12. Fumigation chamber, 13. Air supply pipe, 14. Adjustment disk, 15. Drive groove, 16. Slide rail, 17. Tooth pattern, 18. Adjustment rod, 19. Adjustment gear, 20. Locking member, 21. First protective cover body, 22. Second protective cover body, 23. Second clearance hole, 24. Outer rod, 25. Inner rod, 26. Spring, 27. Limiting part, 28. First annular cavity, 29. Second annular cavity, 30. Air supply pipe, 31. Gear ring, 32. Motor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1: like Figures 1 to 9 As shown, Embodiment 1 of the present invention provides an intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus, including a main unit 1 including a steam generating mechanism, a multi-joint support arm 2 fixed on one side of the main unit 1, and a fumigation head fixed on the end of the multi-joint support arm 2 away from the main unit 1. The steam generating mechanism is a conventional mechanism in Chinese medicine fumigation therapeutic apparatus, and its function is to heat the Chinese medicine liquid, generate Chinese medicine steam, and transport the Chinese medicine steam along the air pipe 30. The present invention does not improve the steam generating mechanism, and the existing steam generating mechanism can be used here, so its structure is not described in detail. The multi-joint support arm 2 can also adopt the support arm structure in the prior art, and the working end of the multi-joint support arm 2 can be adjusted in position with a high degree of freedom, so that the fumigation head can adapt to the patient's body position.

[0029] The focus of the present invention is on the fumigation head, specifically, Figure 3 As shown, the fumigation head designed by the present invention includes an annular base shell 3, a first clearance hole 4 is opened in the center of the base shell 3, and the outer wall of the base shell 3 is fixedly connected to the multi-joint support arm 2. A base ring 5 is rotatably mounted on the inner wall of the base shell 3, and the base ring 5 coincides with the axis of the base shell 3, and the base ring 5 can rotate on the base shell 3. Six fumigation units are evenly distributed on the base ring 5 in the circumferential direction with the axis of the base ring 5 as the center, and the fumigation units are centrally symmetrical with the axis of the base ring 5 as the center.

[0030] like Figure 3 and Figure 7 As shown, six fan-shaped slide rails 16 are evenly fixed on the circumferential surface of the base ring 5, and the center of the slide rail 16 coincides with the axis of the base ring 5. An adjusting disk 14 is slidably mounted on the slide rail 16, and when the adjusting disk 14 slides on the slide rail 16, it rotates around the axis of the base ring 5. Each fumigation unit includes a lifting rod 6 and a fumigation hood 7, wherein the lifting rod 6 passes through the base ring 5 in the radial direction of the base ring 5 and slides with the base ring 5, and the fumigation hood 7 is located at one end of the lifting rod 6 close to the axis of the base ring 5. Six driving grooves 15 corresponding to the six lifting rods 6 are provided on the adjusting disk 14, and a slider is fixed to the end of the lifting rod 6 away from the fumigation hood 7, and the slider is slidably mounted in the driving groove 15. From Figure 7 It can be seen that the driving groove 15 has a certain inclination angle. When the adjusting disk 14 rotates relative to the base ring 5, the position of the slider in the driving groove 15 will change. Since the lifting rod 6 limits the moving direction of the slider, it can only move along the radial direction of the base ring 5. Therefore, when the adjusting disk 14 is rotated, the six sliders and the lifting rod 6 all move synchronously along the radial direction of the base ring 5, which will enable the six fumigation covers 7 to move in the radial direction of the base ring 5, change the spacing between the six fumigation covers 7 and the spacing between the fumigation covers 7 and the patient's limbs passing through the first clearance hole 4, so as to adjust the position of the fumigation cover 7 according to the thickness of the limbs of different patients, so that the fumigation cover 7 can be against the patient's limbs.

[0031] like Figure 8 and Fig. 9 As shown, the bottom of the fumigation hood 7 is open, and two massage rollers 8, a guide roller 9 and a heating roller 10 are rotatably installed inside. These rollers are parallel to the axis of the base ring 5. The moisture absorption belt 11 is wound around the heating roller 10, massage roller 8, guide roller 9 and massage roller 8 in sequence, and then wound back around the heating roller 10. The massage roller 8 partially extends out of the fumigation hood 7, which also places part of the moisture absorption belt 11 outside the fumigation hood 7, so that when the fumigation hood 7 contacts the patient's limbs, the moisture absorption belt 11 can be against the surface of the patient's limbs. Fig. 9 As shown, the moisture absorption belt 11 between the two massage rollers 8 and the fumigation cover 7 cooperate to form a fumigation chamber 12, and a flexible air supply pipe 13 connected to the fumigation chamber 12 is fixed on one side of the fumigation cover 7. The air supply pipe 13 can be a corrugated pipe, so that when the fumigation cover 7 moves, the air supply pipe 13 can be extended and retracted to adapt to the position change of the fumigation cover 7.

[0032] The fumigation hood 7 is hinged at one end of the lifting rod 6, and a limiting portion 27 is fixed on the lifting rod 6 beside the hinge axis between the lifting rod 6 and the fumigation hood 7. The limiting portion 27 has two limiting blocks. When the fumigation hood 7 swings a certain amplitude around the hinge axis, the limiting blocks can resist the fumigation hood 7, thereby limiting the maximum swing angle of the fumigation hood 7. The fumigation hood 7 can swing, thereby better adapting to the changes of the patient's limbs.

[0033] like Figure 5 and Figure 6 As shown, a first annular cavity 28 is provided on the inner side wall of the base shell 3, and a second annular cavity 29 is provided on the outer side wall of the base ring 5 to slide with the first annular cavity 28. The first annular cavity 28 and the second annular cavity 29 are sealed and connected by a sealing ring. At the same time, an air supply pipe 30 communicating with the first annular cavity 28 is fixed on the base shell 3. The end of the air supply pipe 30 away from the base shell 3 is connected to the steam generating mechanism in the host 1, and the air supply pipes 13 in all fumigation units are connected to the second annular cavity 29. In this way, the Chinese medicine steam generated by the steam generating mechanism can enter the first annular cavity 28 and the second annular cavity 29 along the air supply pipe 30. When the base ring 5 rotates on the base shell 3, the Chinese medicine steam can also enter all the air supply pipes 13 through the second annular cavity 29 and finally be discharged from the fumigation cavity 12. Since the fumigation cavity 12 is close to the surface of the patient's limbs, the Chinese medicine steam is more gathered, which greatly reduces the proportion of steam escaping into the outside air.

[0034] When the base ring 5 rotates on the base shell 3, all the fumigation units rotate around the patient's limbs, and the hygroscopic belt 11 extending out of the fumigation cover 7 has a certain friction with the surface of the patient's limbs, so that the hygroscopic belt 11 that fits the patient's limbs can circulate on the massage roller 8, the heating roller 10 and the guide roller 9 when the fumigation unit rotates. Since the massage roller 8 is a round roller, when the massage roller 8 is pressed against the patient's limbs through the hygroscopic belt 11, a depression is formed on the surface of the limb. When the base ring 5 rotates, the position of the depression moves continuously, forming a push-to-pull massage effect.

[0035] Since fumigation treatment usually lasts about 20 minutes, long-term close-range Chinese medicine steam fumigation will gradually cause liquefied Chinese medicine liquid to appear on the skin surface. The hygroscopic belt 11 can absorb the liquefied Chinese medicine liquid on the skin surface, and the heating roller 10 can heat the Chinese medicine liquid on the hygroscopic belt 11, thereby generating secondary Chinese medicine steam in the fumigation chamber 12, thereby improving the utilization rate of the Chinese medicine liquid. The heating roller 10 can also play a role in heating and insulating the Chinese medicine steam in the fumigation cover 7, thereby improving the fumigation effect.

[0036] An infrared temperature sensor may be provided in each fumigation chamber 12, so that the fumigation temperature changes in the six fumigation chambers 12 surrounding the patient's limbs can be monitored in real time, and the steam output temperature of the steam generating mechanism can be adjusted to avoid scalding the patient's skin.

[0037] Embodiment 2: Based on the first embodiment, considering that human limbs are not standard cylindrical, the six fumigation covers 7 need to be able to float to a certain position to adapt to the ups and downs of the limb surface. Figure 5 and Figure 8As shown, the lifting rod 6 designed in the present invention includes an outer rod 24 and an inner rod 25, one end of the inner rod 25 is movably plugged into the outer rod 24, and the other end is hinged to the fumigation cover 7. At the same time, a spring 26 is arranged inside the outer rod 24 to resist the inner rod 25. In this way, the height position of the outer rod 24 can be changed by rotating the adjustment disk 14, and the inner rod 25 can have a certain degree of freedom to move up and down under the action of the spring 26, and the fumigation cover 7 is pressed against the skin surface of the patient under the action of the spring 26.

[0038] Embodiment three: On the basis of the first and second embodiments, in order to more conveniently rotate the adjustment disk 14, as shown in FIG. Figure 2 As shown, the present invention has a tooth pattern 17 on one of the slide rails 16, and an adjusting rod 18 is rotatably mounted on the adjusting disk 14. An adjusting gear 19 meshing with the tooth pattern 17 is fixed on the adjusting rod 18. When the adjusting rod 18 is rotated, the adjusting gear 19 meshes with the tooth pattern 17 and moves on the tooth pattern 17, so that the adjusting disk 14 rotates relative to the base ring 5. In order to lock the adjusting rod 18 and prevent the adjusting rod 18 from rotating, so as to maintain the relative position of the adjusting disk 14 and the base ring 5, the present invention has a locking member 20 threadedly mounted on the adjusting rod 18. When the locking member 20 is rotated, the locking member 20 can gradually press against the adjusting disk 14, so that the adjusting rod 18 cannot rotate.

[0039] Embodiment 4: On the basis of the above embodiment, in order to drive the base ring 5 to rotate on the base shell 3, as shown in FIG. Figure 5 As shown, in the present invention, a ring gear 31 is fixed on the inner side wall of the base ring 5, a driving gear meshing with the ring gear 31 is rotatably installed on the inner end surface of the base shell 3, and a motor 32 is fixedly installed on the outside of the base shell 3. The motor 32 drives the driving gear to rotate, thereby driving the base ring 5 to rotate on the base shell 3, so that the fumigation unit rotates around the patient's limbs for fumigation.

[0040] In order to improve the safety of this device, Figure 1 and Figure 2 As shown, the present invention has a first protective cover body 21 fixed on the base ring 5, and the first protective cover body 21 covers the adjustment disk 14, so that the drive slot 15 and the adjustment gear 19 and other structures are isolated from the outside. A second protective cover body 22 is fixed on the side of the base ring 5 away from the base shell 3, and the base shell 3 and the second protective cover body 22 are respectively located at the two ends of the base ring 5, and a second clearance hole 23 corresponding to the first clearance hole 4 is opened on the second protective cover body 22, and the patient can pass the limb through the second clearance hole 23 and pass through the first clearance hole 4, so that the six fumigation units surround the limb.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus, comprising a host (1), a multi-joint support arm (2) arranged on the host (1), and a fumigation head arranged at the end of the multi-joint support arm (2), characterized in that: The fumigation head comprises: A base shell (3), the base shell (3) is annular, the base shell (3) is fixedly connected to the multi-joint support arm (2), and a first clearance hole (4) is provided on the base shell (3); A base ring (5), the base ring (5) being rotatably mounted on the base shell (3); A plurality of fumigation units are centrally symmetrically arranged on a base ring (5), the fumigation units comprising a lifting rod (6) and a fumigation hood (7), the lifting rod (6) having the freedom to move along the radial direction of the base ring (5), the fumigation hood (7) being arranged at one end of the lifting rod (6) close to the center of the base ring (5), the fumigation hood (7) having the freedom to swing on the lifting rod (6), the bottom of the fumigation hood (7) being open, two massage rollers (8), a guide roller (9) and a heating roller (10) being rotatably mounted in the fumigation hood (7), the massage roller (8), the guide roller (9) and the heating roller (10) being wound with a moisture absorption belt (11), the massage roller (8) partially extending out of the fumigation hood (7), the moisture absorption belt (11) between the two massage rollers (8) and the fumigation hood (7) cooperating to form a fumigation chamber (12), and an air supply pipe (13) communicating with the fumigation chamber (12) being arranged on one side of the fumigation hood (7).

2. The intelligent temperature-controlled Chinese medicine fumigation therapeutic instrument according to claim 1, characterized in that: The lifting rod (6) passes through the base ring (5) in the radial direction of the base ring (5) and is slidably matched with the base ring (5); an adjusting disk (14) is rotatably mounted on the base ring (5); a plurality of driving grooves (15) are provided on the adjusting disk (14); an end of the lifting rod (6) away from the fumigation hood (7) is slidably mounted in the driving groove (15); when the adjusting disk (14) rotates on the base ring (5), the driving groove (15) drives the lifting rod (6) to move in the radial direction of the base ring (5).

3. The intelligent temperature-controlled Chinese medicine fumigation therapeutic instrument as claimed in claim 2, characterized in that: A plurality of fan-shaped slide rails (16) are fixed on the circumferential surface of the base ring (5); the adjustment disk (14) is slidably engaged with the slide rails (16); one of the slide rails (16) is provided with a tooth pattern (17); an adjustment rod (18) is rotatably mounted on the adjustment disk (14); and an adjustment gear (19) meshing with the tooth pattern (17) is fixed on the adjustment rod (18).

4. The intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus as claimed in claim 3, characterized in that: A locking member (20) is provided at one end of the adjusting rod (18) for limiting the rotation of the adjusting rod (18) on the adjusting disk (14).

5. The intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus according to claim 2, characterized in that: A first protective cover body (21) for covering the adjustment disk (14) is fixed on the base ring (5), a second protective cover body (22) is fixed on the side of the base ring (5) facing away from the base shell (3), and a second clearance hole (23) corresponding to the first clearance hole (4) is formed on the second protective cover body (22).

6. The intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus according to claim 1, characterized in that: The lifting rod (6) comprises an outer rod (24) and an inner rod (25); one end of the inner rod (25) is movably plugged into the outer rod (24), and the other end is connected to the fumigation hood (7); a spring (26) is arranged inside the outer rod (24) to resist the inner rod (25).

7. The intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus according to claim 6, characterized in that: The fumigation hood (7) is hinged to the end of the inner rod (25), and a limiting portion (27) is fixed on the inner rod (25), wherein the limiting portion (27) is used to limit the swing angle of the fumigation hood (7) with the hinge axis as the center.

8. The intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus according to claim 1, characterized in that: The base shell (3) is provided with a first annular cavity (28), the base ring (5) is provided with a second annular cavity (29) which is slidably sealed with the first annular cavity (28), the base shell (3) is connected with an air supply pipe (30) which is in communication with the first annular cavity (28), the air supply pipe (30) is connected with a steam generating mechanism in the main unit (1), and the air supply pipes (13) in all the fumigation units are in communication with the second annular cavity (29).

9. The intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus according to claim 1, characterized in that: A gear ring (31) is fixed on the base ring (5), a driving gear meshing with the gear ring (31) is rotatably mounted on the base shell (3), and a motor (32) for driving the driving gear to rotate is fixed on the base shell (3).

10. The intelligent temperature-controlled Chinese medicine fumigation therapeutic apparatus according to claim 1, characterized in that: The air supply pipe (13) is flexible.

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