Sewage treatment device

Abstract

The invention discloses a sewage treatment device, and relates to the technical field of sewage treatment.The device comprises a treatment box, a water inlet pipe and a supporting table are fixed to the upper end of the treatment box, a rotating groove is formed in the top of the right side of the treatment box, the lower end of the treatment box communicates with a filtering structure through a water outlet pipe, and an inner cylinder is rotationally installed in the treatment box; a water outlet is formed in the bottom in the inner cylinder, a fixed table is fixed to the right end of the treatment box, a driving structure used for driving the inner cylinder to rotate is fixed to the upper end of the fixed table, and a rotating structure is fixed to the upper end of the driving structure; through cooperation of the blowing structure and the smashing assembly, airflow assistance can be provided for the smashing assembly through the blowing structure, impurities such as plastic are blown by airflow and prevented from being accumulated at one position, it is ensured that the smashing assembly can effectively cut and smash the impurities such as the plastic in sewage, and it is ensured that no sewage residues exist in the impurities; the sewage treatment effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device. Background Art

[0002] In the process of urban environmental protection, sewage must first be filtered using sewage treatment equipment, and then the filtered water must be deeply purified to ensure that it meets the emission standards, thereby effectively protecting the urban environment.

[0003] In the existing sewage treatment technology, although there are a variety of sewage treatment devices and methods, there are still some challenges in treating sewage containing impurities such as plastics and white garbage. Traditional sewage treatment devices often use a single filtering or pulverizing method, which is difficult to effectively remove impurities such as plastics in sewage, resulting in poor treatment results.

[0004] Specifically, when treating sewage, traditional pulverizing components are prone to the problem of impurity accumulation. Because impurities such as plastics have a large volume and density, they are easily accumulated during the pulverizing process, forming lumps that are difficult to handle, which not only affects the pulverizing effect, but may also cause blockage and damage to the device.

[0005] In addition, existing sewage treatment devices also have certain limitations in terms of filtration. Usually, a fixed filtration structure is used, and different filtration methods cannot be selected according to actual conditions, resulting in limited treatment effects. At the same time, once the filter element inside the filtration structure is blocked or damaged, the entire device needs to be shut down, disassembled and repaired, which increases maintenance costs and difficulty of use.

[0006] Based on this, a sewage treatment device is now provided, which can eliminate the disadvantages of the existing devices. Summary of the invention

[0007] The object of the present invention is to provide a sewage treatment device to solve the problems of impurity accumulation, single filtering method and the need to shut down and disassemble for maintenance in the existing sewage treatment devices in the background technology once the filter element is blocked or damaged.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A sewage treatment device comprises a treatment box, an inlet pipe and a support platform are fixed to the upper end of the treatment box, a rotating groove is provided at the top right side of the treatment box, the lower end of the treatment box is connected to a filtering structure through a water outlet pipe, an inner cylinder is rotatably installed inside the treatment box, a water outlet is provided at the bottom of the inner cylinder, a fixed platform is fixed to the right end of the treatment box, a driving structure for driving the inner cylinder to rotate is fixed to the upper end of the fixed platform, and a rotating structure is fixed to the upper end of the driving structure.

[0010] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0011] Preferably, the filtering structure includes an auxiliary pipe 1 connected to a water outlet pipe and a filter box 2, the auxiliary pipe 1 being closer to the treatment box than the filter box 2, a valve being provided on the water outlet pipe, the valve being provided between the auxiliary pipe 1 and the filter box 2, the other end of the filter box 2 being connected to a drain pipe, the other end of the auxiliary pipe 1 being connected to the auxiliary pipe 2 through the filter box 1, the other end of the auxiliary pipe 2 being connected to the drain pipe, and the filter elements inside the filter boxes 1 and 2 can be replaced.

[0012] Preferably, the driving structure includes a motor installed on the upper end of the fixed platform, a main gear is fixed to the output end of the motor, the main gear is meshed and connected to a gear ring, the gear ring is rotatably installed inside the rotating groove, and the gear ring is fixed to the upper end of the inner cylinder, and a rotating structure is fixed to the upper end of the main gear.

[0013] Preferably, the rotating structure includes a driving wheel fixed at the upper end of the main gear, a blowing structure is arranged at the upper end of the driving wheel, the driving wheel is connected to the driven wheel through a transmission belt, the lower end of the driven wheel is connected to the crushing assembly through a driven rod, the crushing assembly is arranged between the main fixed cylinder and the side fixed cylinder, the main fixed cylinder is fixed at the middle part of the upper end of the bottom plate, the bottom plate is rotatably installed on the bottom of the inner cylinder, side fixed cylinders are fixed on both sides of the upper end of the bottom plate, the outer wall of the side fixed cylinder is in contact with the inner wall of the inner cylinder, and the side fixed cylinder is communicated with the blowing structure.

[0014] Preferably, the crushing assembly includes a plurality of connecting rods rotatably installed between the main fixed cylinder and the side fixed cylinder, a blade is fixed to the outer wall of the connecting rod, one end of the connecting rod extends to the inside of the main fixed cylinder and is fixedly connected to the slave bevel gear, the slave bevel gear is meshed and connected to the main bevel gear, the main bevel gear is fixed to the outer wall of the rotating rod, the rotating rod is rotatably installed inside the main fixed cylinder, and the upper end of the rotating rod is fixed to the lower end of the driven rod.

[0015] Preferably, the blowing structure includes a rotating disk fixed at the upper end of the driving wheel, a fixing rod is fixed to the outer circumference of the upper end of the rotating disk, the fixing rod is rotatably connected to the linkage rod, the other end of the linkage rod is rotatably connected to the piston rod, a piston is fixed to the other end of the piston rod, the piston is slidably installed inside the air cylinder, an inward one-way valve is provided at the upper end of the air cylinder, both sides of the air cylinder are connected with the inside of the side fixed cylinder through connecting pipes, a plurality of mounting holes are opened on the side wall of the side fixed cylinder, and an outward one-way valve is installed inside the mounting hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention cooperates with the blowing structure and the crushing component. The blowing structure can provide airflow assistance for the crushing component. The airflow blows impurities such as plastics to prevent them from accumulating in one place, ensuring that the crushing component can effectively cut and crush impurities such as plastics in sewage, ensuring that no sewage remains inside the impurities, and further improving the effect of sewage treatment.

[0018] 2. The present invention controls the valve switch so that filter box one or filter box two can be selected for filtering according to actual conditions, thereby increasing the flexibility and practicality of the device. In addition, the filter elements inside filter box one and filter box two can be replaced, which is suitable for different types of sewage treatment needs and is easy to maintain and service. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure inside the processing box of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure inside the inner cylinder of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the blowing structure of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the crushing component of the present invention.

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at position A.

[0025] Notes on reference numerals: 1. treatment box; 11. water inlet pipe; 12. support platform; 13. rotating trough; 14. water outlet pipe; 15. filtering structure; 1501. auxiliary pipe 1; 1502. filter box 1; 1503. auxiliary pipe 2; 1504. valve; 1505. filter box 2; 1506. drain pipe; 16. fixing platform; 2. inner cylinder; 21. gear ring; 22. water outlet; 3. driving structure; 301. motor; 302. main gear; 4. rotating structure; 401. driving wheel; 402. transmission belt; 403, driven wheel; 404, driven rod; 41, crushing assembly; 411, rotating rod; 412, main bevel gear; 413, slave bevel gear; 414, connecting rod; 415, blade; 5, main fixed cylinder; 51, bottom plate; 52, side fixed cylinder; 521, mounting hole; 6, blowing structure; 601, rotating disk; 602, fixed rod; 603, linkage rod; 604, piston rod; 605, piston; 606, air cylinder; 607, inward one-way valve; 608, connecting pipe; 609, outward one-way valve. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] In one embodiment, Figure 1-Figure 6 As shown, a sewage treatment device includes a treatment box 1, an inlet pipe 11 and a support platform 12 are fixed to the upper end of the treatment box 1, a rotating groove 13 is opened on the top of the right side of the treatment box 1, and the lower end of the treatment box 1 is connected with a filtering structure 15 through a water outlet pipe 14. An inner cylinder 2 is rotatably installed inside the treatment box 1, and a water outlet 22 is opened at the bottom of the inner cylinder 2. A fixed platform 16 is fixed to the right end of the treatment box 1, and a driving structure 3 for driving the inner cylinder 2 to rotate is fixed to the upper end of the fixed platform 16, and a rotating structure 4 is fixed to the upper end of the driving structure 3.

[0028] In this embodiment, sewage containing plastic and white garbage enters the inner cylinder 2 inside the treatment box 1 through the water inlet pipe 11, and the inner cylinder 2 is driven to rotate by the driving structure 3. The rotation of the inner cylinder 2 helps to fully mix the sewage with the treatment agent in the treatment box 1, thereby improving the treatment effect. Subsequently, the sewage enters the outlet pipe 14 through the water outlet 22 at the bottom of the inner cylinder 2, and then the sewage enters the filtering structure 15 for filtration. The treated sewage enters the subsequent treatment equipment for further treatment.

[0029] In an optional embodiment, the filtering structure 15 includes an auxiliary pipe 1501 and a filter box 1505 connected to the water outlet pipe 14. The auxiliary pipe 1501 is closer to the treatment box 1 than the filter box 1505. A valve 1504 is provided on the water outlet pipe 14. The valve 1504 is provided between the auxiliary pipe 1501 and the filter box 1505. The other end of the filter box 1505 is connected to the drain pipe 1506. The other end of the auxiliary pipe 1501 is connected to the auxiliary pipe 2 1503 through the filter box 1 1502. The other end of the auxiliary pipe 2 1503 is connected to the drain pipe 1506. The internal filter elements of the filter box 1 1502 and the filter box 2 1505 can be replaced.

[0030] It should be noted that when valve 1504 is opened, the sewage enters the filter box 1505 through the outlet pipe 14 for filtration, and the filtered sewage is discharged into the subsequent equipment through the drain pipe 1506 for further treatment; when valve 1504 is closed, the sewage enters the auxiliary pipe 1501 through the outlet pipe 14, and then enters the filter box 1502 for filtration, and the filtered sewage enters the drain pipe 1506 through the auxiliary pipe 1503, and then the sewage is discharged into the subsequent equipment through the drain pipe 1506 for further treatment.

[0031] In an optional embodiment, the driving structure 3 includes a motor 301 installed on the upper end of the fixed platform 16, and a main gear 302 is fixed to the output end of the motor 301. The main gear 302 is meshed and connected to the gear ring 21. The gear ring 21 is rotatably installed inside the rotating groove 13, and the gear ring 21 is fixed to the upper end of the inner cylinder 2. The rotating structure 4 is fixed to the upper end of the main gear 302.

[0032] It should be noted that the motor 301 drives the main gear 302 to rotate, and the main gear 302 drives the inner drum 2 to rotate by engaging with the gear ring 21. When the inner drum 2 rotates to a certain specific position, the water outlet 22 will be connected to the water outlet pipe 14, allowing sewage to flow out of the inner drum 2. As the inner drum 2 continues to rotate, the water outlet 22 will gradually disconnect from the water outlet pipe 14 until it rotates to a connected position again. Therefore, through the rotation of the inner drum 2 and the periodic connection between the water outlet 22 and the water outlet pipe 14, it can be ensured that the sewage has enough time to be mixed and treated in the treatment box 1.

[0033] In an optional embodiment, the rotating structure 4 includes a driving wheel 401 fixed to the upper end of the main gear 302, and a blowing structure 6 is arranged on the upper end of the driving wheel 401. The driving wheel 401 is connected to the driven wheel 403 through a transmission belt 402, and the lower end of the driven wheel 403 is connected to the crushing component 41 through a driven rod 404. The crushing component 41 is arranged between the main fixed cylinder 5 and the side fixed cylinder 52, and the main fixed cylinder 5 is fixed at the middle part of the upper end of the bottom plate 51, and the bottom plate 51 is rotatably installed on the inner bottom of the inner cylinder 2. Side fixed cylinders 52 are fixed on both sides of the upper end of the bottom plate 51, and the outer wall of the side fixed cylinder 52 is in contact with the inner wall of the inner cylinder 2, and the side fixed cylinder 52 is communicated with the blowing structure 6.

[0034] It should be noted that the driving wheel 401 is fixed to the upper end of the main gear 302 and rotates with the rotation of the main gear 302. When the driving wheel 401 rotates, the driven wheel 403 is driven to rotate together through the transmission belt 402. The crushing assembly 41 is connected to the driven wheel 403 through the driven rod 404, so as to realize the power transmission from the driven wheel 403 to the crushing assembly 41. The outer wall of the side fixed cylinder 52 is in contact with the inner wall of the inner cylinder 2. When the driving structure 3 drives the inner cylinder 2 to rotate, the side fixed cylinder 52 scrapes off the impurities attached to the inner wall of the inner cylinder 2.

[0035] In an optional embodiment, the crushing assembly 41 includes a plurality of connecting rods 414 rotatably installed between the main fixed cylinder 5 and the side fixed cylinder 52, and a blade 415 is fixed to the outer wall of the connecting rod 414. One end of the connecting rod 414 extends to the inside of the main fixed cylinder 5 and is fixedly connected to a slave bevel gear 413. The slave bevel gear 413 is meshed and connected to the main bevel gear 412. The main bevel gear 412 is fixed to the outer wall of a rotating rod 411. The rotating rod 411 is rotatably installed inside the main fixed cylinder 5, and the upper end of the rotating rod 411 is fixed to the lower end of the driven rod 404.

[0036] It should be noted that when the driven rod 404 rotates, the rotating rod 411 rotates accordingly, and the main bevel gear 412 rotates accordingly, thereby causing the slave bevel gear 413 to rotate, and the slave bevel gear 413 drives the connecting rod 414 to rotate. During the rotation of the connecting rod 414, the blade 415 rotates accordingly. The blade 415 can effectively cut and crush impurities such as plastics in the sewage, ensuring that no sewage will remain inside the impurities, thereby improving the sewage treatment effect.

[0037] In an optional embodiment, the blowing structure 6 includes a rotating disk 601 fixed to the upper end of the driving wheel 401, a fixed rod 602 is fixed to the outer circumference of the upper end of the rotating disk 601, the fixed rod 602 is rotatably connected to the linkage rod 603, the other end of the linkage rod 603 is rotatably connected to the piston rod 604, the other end of the piston rod 604 is fixed with a piston 605, the piston 605 is slidably installed inside the air cylinder 606, an inward one-way valve 607 is provided at the upper end of the air cylinder 606, both sides of the air cylinder 606 are connected to the inside of the side fixed cylinder 52 through a connecting pipe 608, a plurality of mounting holes 521 are opened on the side wall of the side fixed cylinder 52, and an outward one-way valve 609 is installed inside the mounting hole 521.

[0038] It should be noted that the rotating disk 601 is fixed to the upper end of the driving wheel 401 and rotates as the driving wheel 401 rotates; the fixed rod 602 is fixed on the outer circumference of the upper end of the rotating disk 601 and makes a circular motion as the rotating disk 601 rotates; one end of the linkage rod 603 is rotatably connected to the fixed rod 602, and the other end is rotatably connected to the piston rod 604; in this way, when the fixed rod 602 makes a circular motion, the linkage rod 603 will drive the piston rod 604 to reciprocate; a piston 605 is fixed to the other end of the piston rod 604, and the piston 605 is slidably installed inside the air cylinder 606; when the piston rod 604 drives the piston 605 to slide inside the air cylinder 606, the air pressure inside the air cylinder 606 will change, thereby generating an airflow; an inward one-way valve 607 is provided at the upper end of the air cylinder 606, which allows external air to enter the air cylinder 606, but prevents the air inside the air cylinder 606 from The air in the side fixed cylinder 52 flows back; the two sides of the air cylinder 606 are connected to the inside of the side fixed cylinder 52 through the connecting pipe 608; when the piston 605 moves toward the inside of the air cylinder 606, the air is sucked in through the inward one-way valve 607; when the piston 605 moves toward the outside of the air cylinder 606, the air is pressed into the inside of the side fixed cylinder 52 through the connecting pipe 608; a plurality of mounting holes 521 are provided on the side wall of the side fixed cylinder 52, and an outward one-way valve 609 is installed inside the mounting hole 521; the outward one-way valve 609 allows air to flow out from the inside of the side fixed cylinder 52, but prevents external air from entering the side fixed cylinder 52; in this way, when the air in the air cylinder 606 enters the side fixed cylinder 52 through the connecting pipe 608, it flows out through the outward one-way valve 609, providing airflow assistance for the crushing component 41, and the airflow blows away impurities such as plastic to prevent them from accumulating in one place, thereby ensuring that the crushing component 41 can crush them.

[0039] The above embodiment discloses a sewage treatment device, wherein sewage enters the inner drum 2 inside the treatment box 1 through the water inlet pipe 11, the motor 301 drives the main gear 302 to rotate, and the main gear 302 drives the inner drum 2 to rotate by engaging with the gear ring 21. The rotation of the inner drum 2 helps to fully mix the sewage with the treatment agent in the treatment box 1. When the inner drum 2 rotates to a certain specific position, the water outlet 22 will be connected to the water outlet pipe 14, allowing the sewage to flow out of the inner drum 2. As the inner drum 2 continues to rotate, the water outlet 22 will gradually disconnect from the water outlet pipe 14 until it rotates to a connected position again, thereby ensuring that the sewage has enough time to be mixed and treated in the treatment box 1 through the rotation of the inner drum 2 and the periodic connection between the water outlet 22 and the water outlet pipe 14.

[0040] The driving wheel 401 rotates with the main gear 302, and drives the driven wheel 403 to rotate through the transmission belt 402. The driven wheel 403 is connected to the crushing assembly 41 through the driven rod 404, so as to realize the power transmission from the driven wheel 403 to the crushing assembly 41. The crushing assembly 41 includes a connecting rod 414 rotatably installed between the main fixed cylinder 5 and the side fixed cylinder 52. A blade 415 is fixed to the outer wall of the connecting rod 414. When the driven rod 404 rotates, the rotating rod 411, the main bevel gear 412 and the slave bevel gear 413 work together to drive the connecting rod 414 and the blade 415 to rotate. The blade 415 effectively cuts and crushes impurities such as plastics in the sewage to ensure that no sewage remains inside the impurities.

[0041] The rotating disk 601 rotates with the driving wheel 401, and the fixed rod 602 makes a circular motion. One end of the linkage rod 603 is rotatably connected to the fixed rod 602, and the other end is rotatably connected to the piston rod 604. When the fixed rod 602 makes a circular motion, the linkage rod 603 drives the piston rod 604 to reciprocate, and the piston 605 slides inside the air cylinder 606 to change the air pressure inside the air cylinder 606, thereby generating airflow. The airflow enters the side fixed cylinder 52 through the connecting pipe 608 and flows out through the outward one-way valve 609, providing airflow assistance for the crushing component 41. The airflow blows away impurities such as plastic to prevent them from accumulating in one place, thereby ensuring that the crushing component 41 can effectively crush them.

[0042] The sewage enters the filtering structure 15 through the outlet pipe 14. The filtering structure 15 includes an auxiliary pipe 1501, a filter box 1502, an auxiliary pipe 1503, a filter box 1505, a valve 1504 and a drain pipe 1506. When the valve 1504 is opened, the sewage is filtered through the filter box 1505; when the valve 1504 is closed, the sewage is filtered through the filter box 1502, and the filtered sewage is discharged into the subsequent equipment through the drain pipe 1506 for further treatment.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A sewage treatment device, characterized in that: The invention comprises a treatment box (1), wherein a water inlet pipe (11) and a support platform (12) are fixed at the upper end of the treatment box (1), a rotating groove (13) is provided at the top right side of the treatment box (1), the lower end of the treatment box (1) is connected to a filtering structure (15) via a water outlet pipe (14), an inner cylinder (2) is rotatably mounted inside the treatment box (1), a water outlet (22) is provided at the bottom of the inner cylinder (2), a fixed platform (16) is fixed at the right end of the treatment box (1), a driving structure (3) for driving the inner cylinder (2) to rotate is fixed at the upper end of the fixed platform (16), and a rotating structure (4) is fixed at the upper end of the driving structure (3).

2. A sewage treatment device according to claim 1, characterized in that: The filtering structure (15) comprises an auxiliary pipe 1 (1501) and a filter box 2 (1505) connected to a water outlet pipe (14); the auxiliary pipe 1 (1501) is closer to the treatment box (1) than the filter box 2 (1505); a valve (1504) is provided on the water outlet pipe (14); the valve (1504) is provided between the auxiliary pipe 1 (1501) and the filter box 2 (1505); the other end of the filter box 2 (1505) is connected to a drain pipe (1506); the other end of the auxiliary pipe 1 (1501) is connected to the auxiliary pipe 2 (1503) via the filter box 1 (1502); the other end of the auxiliary pipe 2 (1503) is connected to the drain pipe (1506); the filter elements inside the filter box 1 (1502) and the filter box 2 (1505) are replaceable.

3. A sewage treatment device according to claim 1, characterized in that: The driving structure (3) comprises a motor (301) mounted on the upper end of a fixed platform (16); a main gear (302) is fixed to the output end of the motor (301); the main gear (302) is meshedly connected to a gear ring (21); the gear ring (21) is rotatably mounted inside a rotating groove (13); the gear ring (21) is fixed to the upper end of an inner cylinder (2); and a rotating structure (4) is fixed to the upper end of the main gear (302).

4. A sewage treatment device according to claim 3, characterized in that: The rotating structure (4) comprises a driving wheel (401) fixed to the upper end of the main gear (302), the upper end of the driving wheel (401) is provided with a blowing structure (6), the driving wheel (401) is connected to the driven wheel (403) through a transmission belt (402), the lower end of the driven wheel (403) is connected to the crushing assembly (41) through a driven rod (404), the crushing assembly (41) is arranged between the main fixed cylinder (5) and the side fixed cylinder (52), the main fixed cylinder (5) is fixed to the middle part of the upper end of the bottom plate (51), the bottom plate (51) is rotatably mounted on the inner bottom of the inner cylinder (2), the side fixed cylinders (52) are fixed on both sides of the upper end of the bottom plate (51), the outer wall of the side fixed cylinder (52) is in contact with the inner wall of the inner cylinder (2), and the side fixed cylinder (52) is connected to the blowing structure (6).

5. A sewage treatment device according to claim 4, characterized in that: The crushing assembly (41) comprises a plurality of connecting rods (414) rotatably mounted between a main fixed cylinder (5) and a side fixed cylinder (52); a blade (415) is fixed to the outer wall of the connecting rod (414); one end of the connecting rod (414) extends to the inside of the main fixed cylinder (5) and is fixedly connected to a slave bevel gear (413); the slave bevel gear (413) is meshedly connected to a main bevel gear (412); the main bevel gear (412) is fixed to the outer wall of a rotating rod (411); the rotating rod (411) is rotatably mounted inside the main fixed cylinder (5); and the upper end of the rotating rod (411) is fixed to the lower end of the driven rod (404).

6. A sewage treatment device according to claim 4, characterized in that: The blowing structure (6) comprises a rotating disk (601) fixed to the upper end of the driving wheel (401), a fixed rod (602) is fixed on the outer circumference of the upper end of the rotating disk (601), the fixed rod (602) is rotatably connected to the linkage rod (603), the other end of the linkage rod (603) is rotatably connected to the piston rod (604), the other end of the piston rod (604) is fixed with a piston (605), the piston (605) is slidably installed inside the air cylinder (606), an inward one-way valve (607) is provided at the upper end of the air cylinder (606), both sides of the air cylinder (606) are connected to the inside of the side fixed cylinder (52) through a connecting pipe (608), a plurality of mounting holes (521) are opened on the side wall of the side fixed cylinder (52), and an outward one-way valve (609) is installed inside the mounting hole (521).

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