Emulsifier reaction wastewater and waste oil recycling device

Abstract

The invention relates to the technical field of wastewater treatment, in particular to an emulsifier reaction wastewater and waste oil recycling device which comprises a main body cylinder of a cylindrical structure, and a rotating centrifugal mechanism for driving wastewater to conduct centrifugal rotation is arranged in the main body cylinder and comprises a first empty groove formed in the upper end of the main body cylinder. An atomization demulsification mechanism for performing demulsification and air flotation on the emulsifier wastewater is arranged at the telescopic end parts of the plurality of first electric telescopic rods, the atomization demulsification mechanism comprises a fixed plate with a cylindrical structure, and a scraping and collecting mechanism for collecting emulsifier impurities on the inner wall of the rotating cylinder and the wastewater is arranged on the inner side surface of the rotating cylinder. When the device is in use, the emulsifier is moved to the inner wall of the rotating cylinder and above the liquid level, at the moment, tiny emulsifier suspended solids in the wastewater can be attached in the upward moving process of the bubbles, and then the bubbles are driven by buoyancy to move to the liquid level, so that the tiny emulsifier suspended solids in the wastewater can be completely removed.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a device for recycling wastewater and waste oil from emulsifier reaction. Background Art

[0002] Emulsifier wastewater recovery refers to the process of recovering and reusing emulsifiers from wastewater after the emulsifiers are used. Emulsifiers are a chemical substance commonly used in industrial production, used to prepare emulsions, and are widely used in food processing, cosmetics, pharmaceuticals, paints, coatings and other industries. In the production process, emulsifiers will produce wastewater after mixing with water. If directly discharged, it will not only waste resources, but also may cause harm to the environment. In the prior art, chemical treatment methods or physical treatment methods are generally used to treat emulsifier wastewater.

[0003] The chemical treatment method is to add a demulsifier to the solution to separate the emulsion in the emulsifier wastewater and float it on the water surface by standing still. When this method is used to treat emulsifier wastewater, some tiny emulsifier particles are likely to remain in the wastewater, and they cannot completely float on the water surface when standing still for a long time, resulting in the emulsifier particles in the wastewater cannot be completely removed. The physical treatment method is to drive the wastewater through the biofilm by centrifugation and other means, and separate the emulsifier from the wastewater through the biofilm. This method requires the use of more biofilms when used, and the cost is relatively high. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an emulsifier reaction wastewater and waste oil recovery and utilization device.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: an emulsifier reaction wastewater and waste oil recycling device, comprising a main body cylinder of a cylindrical structure, a rotating centrifugal mechanism for driving the wastewater to rotate centrifugally is arranged in the main body cylinder, the rotating centrifugal mechanism comprises a first empty slot opened at the upper end of the main body cylinder, a rotating cylinder is rotatably arranged in the first empty slot, a first motor is fixedly connected to the lower end of the main body cylinder, a transmission shaft of the first motor rotates and penetrates the lower end of the main body cylinder, a transmission shaft end of the first motor is fixedly connected to the lower end of the rotating cylinder, a second empty slot is opened at the upper end of the rotating cylinder, a plurality of first placement slots distributed at equal angles are opened at the upper end of the main body cylinder, the main body cylinder is respectively fixedly connected with first electric telescopic rods in the plurality of first placement slots, and the telescopic ends of the plurality of first electric telescopic rods are provided with an atomizing demulsification mechanism for demulsifying and flotating the emulsifier wastewater, the atomizing demulsification mechanism comprises a fixed plate of a cylindrical structure, and a scraping and collecting mechanism for collecting the emulsifier impurities on the inner wall of the rotating cylinder and the wastewater is arranged on the inner side surface of the rotating cylinder.

[0006] Preferably, a plurality of symmetrically arranged shock absorbing rods are fixedly connected to the lower end of the main body tube, and the lower ends of the plurality of shock absorbing rods are respectively fixedly connected to support columns, and the lower ends of the support columns are connected to a plurality of anti-slip protrusions.

[0007] Preferably, the lower end of the fixed plate is fixedly connected to the telescopic ends of several first electric telescopic rods, the upper end of the fixed plate is fixedly connected to a fixed shell, a first cavity with an annular structure and a second cavity with a cylindrical structure are provided in the fixed shell, the lower end of the fixed shell is fixedly connected to several oscillation plates in the first cavity, and the fixed shell is fixedly connected to an air pump in the second cavity.

[0008] Preferably, a protective plate is fixedly connected to the upper end of the outer side surface of the fixed shell by bolts, the inner side surface of the fixed shell is lower than the height of the outer side surface, a plurality of air inlet holes are penetrated through the upper end of the protective plate, and a plurality of air outlet holes are opened at the upper end of the fixed plate at a position not overlapping with the protective plate.

[0009] Preferably, a fixed tube is rotatably provided through the upper end of the fixed plate, the upper end of the fixed tube is an opening mechanism, the upper end of the fixed tube is connected to the air outlet end of the air pump, and a plurality of groups of equidistantly arranged through holes are provided on the side of the fixed tube, each group of through holes is composed of four through holes arranged in a circle, and a plurality of the through holes are respectively fixedly connected with a one-way valve, and the air outlet angles of a plurality of the one-way valves are upward.

[0010] Preferably, the scraping and collecting mechanism includes a second placement groove opened at the lower end of the fixed plate, the fixed plate is fixedly connected with a second electric telescopic rod in the second placement groove, the telescopic end of the second electric telescopic rod is fixedly connected with a pressure sensor, and the lower end of the pressure sensor is fixedly connected with a scraper.

[0011] Preferably, the upper end of the scraper blade is a horizontal structure, the lower end of the scraper blade is a curved structure with a thickness gradually decreasing from the center to the outer end, and the pressure sensor is connected to the second electric telescopic rod through an electric wire.

[0012] Preferably, the lower end of the fixed plate is fixedly connected to a plurality of connecting rods (arranged at equal angles), the lower ends of the plurality of connecting rods are fixedly connected to a fixing ring, the upper end of the fixing ring is provided with a third empty groove at a position close to the outside, a brush is fixedly connected in the third empty groove, and the lower end of the fixing ring is arranged as a biofilm.

[0013] Preferably, a third placement groove is opened at the upper end of the main body tube, and a accommodating shell is slidably arranged in the third placement groove. The upper end of the accommodating shell is an open structure, the upper end of the outer surface of the accommodating shell is higher than the upper end of the inner surface, and the upper end of the inner surface of the accommodating shell is flush with the rotating tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The first motor drives the rotating drum to rotate. While the rotating drum is rotating, several oscillating plates and air pumps are started. The oscillating plates oscillate the demulsifier solution in the fixed shell to generate mist. Then the air pump drives the demulsifier mist to move into the fixed tube through air. The mist in the fixed tube is discharged into the wastewater through several one-way valves. Since the aperture of the one-way valve is very small, the discharged mist forms extremely small bubbles in the wastewater. At the same time, under the action of centrifugal force, the bubbles can quickly fill the entire solution, so that the emulsifier and water in the wastewater are separated. The emulsifier is moved to the inner wall of the rotating drum and above the liquid surface. At this time, the bubbles can attach tiny emulsifier suspended matter in the wastewater during the upward movement, and then move to the liquid surface driven by buoyancy, so that the tiny emulsifier suspended matter in the wastewater can be completely removed, thereby improving the effect of wastewater treatment; The lower end of the scraper is an arc structure with a thickness that gradually decreases from the center to the outer end. When the rotating drum rotates, the fixed scraper can scrape the emulsifier on the liquid surface into the containing shell, and the inner side surface of the containing shell is flush with the upper end of the rotating drum, which can ensure that the emulsifier above the liquid surface is completely collected in the containing shell. When the emulsifier on the liquid surface is completely collected, the first motor continues to rotate and extends a plurality of first electric telescopic rods. The first electric telescopic rod drives the fixed plate to move upward, and the fixed plate drives the fixed ring to move upward through four connecting rods. At this time, the emulsifier on the inner side of the rotating drum is driven by centrifugal force to gather on the inner wall of the rotating drum. The fixed ring can drive the emulsifier to the third empty groove during the movement, and then it is collected in the third empty groove under the filtration of the biofilm. The brush can ensure that the emulsifier on the inner wall of the rotating drum is completely cleaned, so that the emulsifier in the wastewater can be completely filtered and collected through a smaller biofilm, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Partial cross-section of the present invention Figure 1 ; Figure 3 Partial cross-section of the present invention Figure 2 ; Figure 4 For the present invention Figure 2 A magnified image of point A; Figure 5 For the present invention Figure 2 A magnified view of point B; Figure 6 For the present invention Figure 2 Enlarged view of point C; Figure 7 For the present invention Figure 2 The enlarged view of point D; Figure 8For the present invention Figure 3 Enlarged view of point E.

[0016] 1. Main cylinder; 2. Rotating centrifugal mechanism; 3. Atomizing demulsification mechanism; 4. Scraping and collecting mechanism; 5. Support column; 6. Shock-absorbing rod; 21. First empty slot; 22. Rotating cylinder; 23. First motor; 24. Second empty slot; 25. First placement slot; 26. First electric telescopic rod; 31. Protective plate; 32. Fixed shell; 33. Fixed plate; 34. Fixed tube; 35. First cavity; 36. Second cavity; 37. Air pump; 38. Oscillating plate; 39. Through hole; 310. One-way valve; 41. Second placement slot; 42. Second electric telescopic rod; 43. Pressure sensor; 44. Scraper; 45. Containing shell; 46. Connecting rod; 47. Third placement slot; 48. Fixed ring; 49. Third empty slot; 410. Brush; 411. Biofilm. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] See also Figure 1-Figure 8 A device for recycling wastewater and waste oil from an emulsifier reaction comprises a main body tube 1 of a cylindrical structure, wherein a rotating centrifugal mechanism 2 for driving the wastewater to rotate centrifugally is arranged in the main body tube 1.

[0019] In this embodiment, the rotating centrifugal mechanism 2 includes a first empty groove 21 opened at the upper end of the main cylinder 1, and a rotating cylinder 22 is rotatably arranged in the first empty groove 21. A first motor 23 is fixedly connected to the lower end of the main cylinder 1. The transmission shaft of the first motor 23 rotates and passes through the lower end of the main cylinder 1. The transmission shaft end of the first motor 23 is fixedly connected to the lower end of the rotating cylinder 22. A second empty groove 24 is opened at the upper end of the rotating cylinder 22. A plurality of first placement grooves 25 distributed at equal angles are opened at the upper end of the main cylinder 1, and the main cylinder 1 is respectively fixedly connected with first electric telescopic rods 26 in the plurality of first placement grooves 25.

[0020] The lower end of the main tube 1 is fixedly connected to a plurality of symmetrically arranged shock absorbing rods 6, and the lower ends of the plurality of shock absorbing rods 6 are respectively fixedly connected to support columns 5, and the lower ends of the support columns 5 are connected to a plurality of anti-slip protrusions.

[0021] Specifically, several first electric telescopic rods 26 are extended at the same time, and the several first electric telescopic rods 26 drive the fixed plate 33 to move upward. At this time, the emulsifier waste water is discharged into the rotating cylinder 22 through the water pump. Then, several first electric telescopic rods 26 are retracted, and the several first electric telescopic rods 26 drive the lower end of the fixed plate 33 to contact the upper end of the main cylinder 1.

[0022] In this embodiment, the telescopic ends of the plurality of first electric telescopic rods 26 are provided with atomizing demulsification mechanisms 3 for demulsifying and flotating the emulsified wastewater, and the atomizing demulsification mechanisms 3 include a fixing plate 33 of a cylindrical structure.

[0023] The lower end of the fixed plate 33 is fixedly connected to the telescopic ends of several first electric telescopic rods 26, and the upper end of the fixed plate 33 is fixedly connected to a fixed shell 32. A first cavity 35 of an annular structure and a second cavity 36 of a cylindrical structure are provided in the fixed shell 32. The lower end of the fixed shell 32 is fixedly connected to several oscillation plates 38 in the first cavity 35, and the fixed shell 32 is fixedly connected to an air pump 37 in the second cavity 36.

[0024] The upper end of the outer surface of the fixed shell 32 is fixedly connected to the protective plate 31 by bolts, the inner side of the fixed shell 32 is lower than the height of the outer side, and a plurality of air inlet holes are opened through the upper end of the protective plate 31, and a plurality of air outlet holes are opened at the upper end of the fixed plate 33 at a position not overlapping with the protective plate 31.

[0025] A fixed tube 34 is rotatably provided on the upper end of the fixed plate 33, and the upper end of the fixed tube 34 is an opening mechanism. The upper end of the fixed tube 34 is connected to the air outlet end of the air pump 37, and a plurality of groups of equidistantly arranged through holes 39 are provided on the side of the fixed tube 34, and each group of the through holes 39 is composed of four through holes 39 arranged in a circle, and a plurality of the through holes 39 are respectively fixedly connected with a one-way valve 310, and the air outlet angles of the plurality of the one-way valves 310 are upward.

[0026] Specifically, a plurality of oscillating plates 38 and air pumps 37 are started, and the oscillating plates 38 oscillate the demulsifier solution in the fixed shell 32 to generate mist, and then the air pump 37 drives the demulsifier mist to move into the fixed pipe 34 through air, and the mist in the fixed pipe 34 is discharged into the wastewater through a plurality of one-way valves 310. Since the aperture of the one-way valve 310 is very small, the discharged mist forms extremely small bubbles in the wastewater, and under the action of centrifugal force, the bubbles can quickly fill the entire solution, so that the emulsifier and water in the wastewater are separated.

[0027] In this embodiment, the inner side surface of the rotating drum 22 is provided with a scraping and collecting mechanism 4 for collecting emulsifier impurities on the inner wall of the rotating drum 22 and on the wastewater.

[0028] The scraping and collecting mechanism 4 includes a second placement groove 41 opened at the lower end of the fixed plate 33, and the fixed plate 33 is fixedly connected with a second electric telescopic rod 42 in the second placement groove 41. The telescopic end of the second electric telescopic rod 42 is fixedly connected with a pressure sensor 43, and the lower end of the pressure sensor 43 is fixedly connected with a scraper 44.

[0029] The upper end of the scraper 44 is a horizontal structure, and the lower end of the scraper 44 is a curved structure with a thickness gradually decreasing from the center to the outer end. The pressure sensor 43 is connected to the second electric telescopic rod 42 through an electric wire.

[0030] The lower end of the fixed plate 33 is fixedly connected to a plurality of connecting rods 46 arranged at equal angles, and the lower ends of the plurality of connecting rods 46 are fixedly connected to a fixing ring 48. The upper end of the fixing ring 48 is provided with a third slot 49 at a position close to the outside, and a brush 410 is fixedly connected in the third slot 49. The lower end of the fixing ring 48 is arranged as a biofilm 411.

[0031] A third placement groove 47 is opened at the upper end of the main body tube 1, and a accommodating shell 45 is slidably arranged in the third placement groove 47 of the main body tube 1. The upper end of the accommodating shell 45 is an open structure, and the upper end of the outer surface of the accommodating shell 45 is higher than the upper end of the inner surface, and the upper end of the inner surface of the accommodating shell 45 is flush with the rotating tube 22.

[0032] Specifically, the second electric telescopic rod 42 drives the lower end of the scraper 44 to contact the liquid surface of the wastewater. Since the upper end of the scraper 44 is a horizontal structure, the lower end of the scraper 44 is an arc structure with a thickness gradually decreasing from the center to the outer end. When the rotating cylinder 22 rotates, the fixed scraper 44 can scrape the emulsifier on the liquid surface into the containing shell 45, and the inner side surface of the containing shell 45 is flush with the upper end of the rotating cylinder 22, which can ensure that the emulsifier above the liquid surface is completely collected in the containing shell 45.

[0033] When in use, the main cylinder 1 is placed through a combination of several shock-absorbing rods 6 and support columns 5, and then several first electric telescopic rods 26 are extended at the same time, and several first electric telescopic rods 26 drive the fixed plate 33 to move upward. At this time, the emulsifier waste water is discharged into the rotating cylinder 22 through the water pump, and then several first electric telescopic rods 26 are retracted, and several first electric telescopic rods 26 drive the lower end of the fixed plate 33 to contact the upper end of the main cylinder 1. Then, the protective plate 31 is opened by tightening the bolts, and the solution containing the demulsifier is injected into the fixed shell 32. Then, the protective plate 31 is fixed, and then the first motor 23 is started. The first motor 23 drives the rotating cylinder 22 to rotate. While the rotating cylinder 22 rotates, several vibration plates 38 and air pumps 37 are started to vibrate. The swinging blade 38 shakes the demulsifier solution in the fixed shell 32 to generate mist, and then the air pump 37 drives the demulsifier mist to move into the fixed pipe 34 through air, and the mist in the fixed pipe 34 is discharged into the wastewater through a plurality of one-way valves 310. Since the aperture of the one-way valve 310 is very small, the discharged mist forms extremely small bubbles in the wastewater, and at the same time, under the action of centrifugal force, the bubbles can quickly fill the entire solution, so that the emulsifier and water in the wastewater are separated, and the emulsifier is moved to the inner wall of the rotating cylinder 22 and above the liquid surface. At this time, the bubbles can attach tiny emulsifier suspended matter in the wastewater during the upward movement, and then move to the liquid surface driven by buoyancy, so that the tiny emulsifier suspended matter in the wastewater can be completely removed, thereby improving the effect of wastewater treatment.

[0034] When the emulsifier in the wastewater is moved to the liquid surface, the second electric telescopic rod 42 is extended, and the second electric telescopic rod 42 drives the lower end of the scraper 44 to contact the liquid surface of the wastewater. Since the upper end of the scraper 44 is a horizontal structure, and the lower end of the scraper 44 is an arc structure with a thickness gradually decreasing from the center to the outer end, when the rotating cylinder 22 rotates, the fixed scraper 44 can scrape the emulsifier on the liquid surface into the containing shell 45, and the inner side surface of the containing shell 45 is flush with the upper end of the rotating cylinder 22, which can ensure that the emulsifier above the liquid surface is completely collected in the containing shell 45. When the emulsifier on the liquid surface is completely collected, the first motor 23 continues to rotate, extending a plurality of first electric telescopic rods 26, and the first electric telescopic rods 26 are rotated. An electric telescopic rod 26 drives the fixed plate 33 to move upward, and the fixed plate 33 drives the fixed ring 48 to move upward through four connecting rods 46. At this time, the emulsifier on the inner side of the rotating cylinder 22 is gathered on the inner wall of the rotating cylinder 22 driven by centrifugal force. The fixed ring 48 can drive the emulsifier into the third empty groove 49 during the movement, and then it is collected in the third empty groove 49 under the filtration of the biofilm 411. The brush 410 can ensure that the emulsifier on the inner wall of the rotating cylinder 22 is completely cleaned, so that the emulsifier in the wastewater can be completely filtered and collected through the smaller biofilm 411, thereby reducing costs. When the treatment is completed, the treated wastewater is sucked out through the suction pipe.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An emulsifier reaction wastewater and waste oil recycling device, comprising a main body tube (1) of a cylindrical structure, characterized in that: The main body barrel (1) is provided with a rotating centrifugal mechanism (2) for driving the wastewater to rotate centrifugally. The rotating centrifugal mechanism (2) comprises a first empty slot (21) provided at the upper end of the main body barrel (1). A rotating barrel (22) is rotatably provided in the first empty slot (21). A first motor (23) is fixedly connected to the lower end of the main body barrel (1). The transmission shaft of the first motor (23) rotatably passes through the lower end of the main body barrel (1). The transmission shaft end of the first motor (23) is fixedly connected to the lower end of the rotating barrel (22). A second empty slot (24) is provided at the upper end of the rotating barrel (22). The upper end of the main body tube (1) is provided with a plurality of first placement grooves (25) distributed at equal angles. The main body tube (1) is respectively fixedly connected with first electric telescopic rods (26) in the plurality of first placement grooves (25). The telescopic ends of the plurality of first electric telescopic rods (26) are provided with atomizing demulsification mechanisms (3) for demulsifying and flotating emulsified wastewater. The atomizing demulsification mechanism (3) comprises a fixing plate (33) of a cylindrical structure. The inner side surface of the rotating cylinder (22) is provided with a scraping and collecting mechanism (4) for collecting emulsified impurities on the inner wall of the rotating cylinder (22) and on the wastewater.

2. The device for recycling wastewater and waste oil from emulsifier reaction according to claim 1, characterized in that: The lower end of the main body tube (1) is fixedly connected to a plurality of symmetrically arranged shock absorbing rods (6), the lower ends of the plurality of shock absorbing rods (6) are respectively fixedly connected to support columns (5), and the lower ends of the support columns (5) are connected to a plurality of anti-slip protrusions.

3. The device for recycling wastewater and waste oil from emulsifier reaction according to claim 1, characterized in that: The lower end of the fixed plate (33) is fixedly connected to the telescopic ends of a plurality of first electric telescopic rods (26); the upper end of the fixed plate (33) is fixedly connected to a fixed shell (32); a first cavity (35) of an annular structure and a second cavity (36) of a cylindrical structure are provided in the fixed shell (32); a plurality of oscillating plates (38) are fixedly connected to the lower end of the fixed shell (32) in the first cavity (35); and an air pump (37) is fixedly connected to the fixed shell (32) in the second cavity (36).

4. The device for recycling wastewater and waste oil from emulsifier reaction according to claim 3, characterized in that: The upper end of the outer side surface of the fixed shell (32) is fixedly connected to a protective plate (31) by bolts, the inner side surface of the fixed shell (32) is lower than the height of the outer side surface, a plurality of air inlet holes are formed through the upper end of the protective plate (31), and a plurality of air outlet holes are formed at the upper end of the fixed plate (33) at a position not overlapping with the protective plate (31).

5. The device for recycling wastewater and waste oil from emulsifier reaction according to claim 3, characterized in that: A fixing pipe (34) is rotatably provided at the upper end of the fixing plate (33) and penetrates through the fixing pipe (34). The upper end of the fixing pipe (34) is an opening mechanism. The upper end of the fixing pipe (34) is connected to the air outlet of the air pump (37). A plurality of groups of through holes (39) arranged at equal intervals are provided on the side of the fixing pipe (34). Each group of through holes (39) is composed of four through holes (39) arranged in a circle. One-way valves (310) are respectively fixedly connected to the plurality of through holes (39). The air outlets of the plurality of one-way valves (310) are angled upward.

6. The device for recycling wastewater and waste oil from emulsifier reaction according to claim 1, characterized in that: The scraping and collecting mechanism (4) comprises a second placement groove (41) formed at the lower end of the fixed plate (33); the fixed plate (33) is fixedly connected to a second electric telescopic rod (42) in the second placement groove (41); the telescopic end of the second electric telescopic rod (42) is fixedly connected to a pressure sensor (43); and the lower end of the pressure sensor (43) is fixedly connected to a scraper (44).

7. The device for recycling waste water and waste oil from emulsifier reaction according to claim 6, characterized in that: The upper end of the scraper (44) is a horizontal structure, and the lower end of the scraper (44) is a curved surface structure with a thickness gradually decreasing from the center to the outer end. The pressure sensor (43) is connected to the second electric telescopic rod (42) via an electric wire.

8. The device for recycling wastewater and waste oil from emulsifier reaction according to claim 6, characterized in that: The lower end of the fixed plate (33) is fixedly connected to a plurality of connecting rods (46) arranged at equal angles, the lower ends of the plurality of connecting rods (46) are fixedly connected to a fixing ring (48), the upper end of the fixing ring (48) is provided with a third slot (49) at a position close to the outside, a brush (410) is fixedly connected in the third slot (49), and the lower end of the fixing ring (48) is provided with a biofilm (411).

9. The device for recycling wastewater and waste oil from emulsifier reaction according to claim 1, characterized in that: A third placement groove (47) is provided at the upper end of the main body tube (1), and a accommodating shell (45) is slidably arranged in the third placement groove (47) of the main body tube (1). The upper end of the accommodating shell (45) is an open structure, the upper end of the outer side surface of the accommodating shell (45) is higher than the upper end of the inner side surface, and the upper end of the inner side surface of the accommodating shell (45) is flush with the rotating tube (22).

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