River channel sewage interception treatment device for water resource treatment

Abstract

The invention discloses a river channel sewage interception treatment device for water resource treatment, and relates to the related technical field of sewage interception treatment devices, and the river channel sewage interception treatment device comprises a treatment bin, a transmission unit and a storage unit. The treatment bin is provided with a water inlet and a water outlet with an on-off valve. The transmission unit is arranged in the treatment bin, the two ends of the transmission unit are rotationally connected with a collecting mechanism, and the collecting mechanism comprises a vertical plate with a filter screen and a bearing plate. The transmission unit can drive the two collecting mechanisms to do circular motion close to each other along the inner wall of the treatment bin so as to collect the floating impurities on the water surface to one end. During drainage, the opening and closing valve is opened, the collected impurities are discharged to the material storage unit along with water flow, and the material storage unit filters and collects the impurities. Through circulating reciprocating motion of the collecting mechanism, continuous and automatic collection, transfer and separation collection of floating impurities are achieved, resetting after operation is not needed, the sewage intercepting efficiency and the automation degree are remarkably improved, and the problems that a traditional device is tedious in operation and low in efficiency are solved.

Description

Technical Field

[0001] This invention relates to the technical field of sewage interception and treatment devices, specifically to river sewage interception and treatment devices for water resource management. Background Technology

[0002] In water resource management, especially in the process of intercepting and treating sewage in rivers, a common and thorny problem is how to efficiently remove floating pollutants from the water surface. Rivers have strong water flow and large fluctuations in water inflow, and a wide variety of floating impurities (such as plastic products, branches and leaves, foam, etc.). Their continuous input poses a severe challenge to traditional fixed-point interception and collection methods.

[0003] Existing river interception devices mostly employ fixed bar screens or periodically reciprocating mechanical retrieval arms. While these can intercept some floating debris, they exhibit numerous shortcomings in actual operation: fixed bar screens are easily clogged by impurities, requiring frequent manual cleaning, resulting in high maintenance intensity and safety hazards; while mobile retrieval devices require interrupting water flow or waiting for the retrieval mechanism to reset after each operation before the next round can begin, failing to achieve continuous, automated, and efficient removal. Furthermore, most devices lack immediate dewatering and compression functions for collected impurities, leading to rapid saturation of the impurity storage volume and high removal frequency, indirectly affecting the continuity of interception operations and overall treatment efficiency. Therefore, there is an urgent need for an integrated sewage interception and treatment device that can adapt to dynamic river hydrological conditions and achieve continuous automatic interception, retrieval, dewatering, and centralized temporary storage of floating impurities, thereby improving the efficiency and intelligence level of the front-end of water resource management. Summary of the Invention

[0004] The purpose of this invention is to provide a river interception and treatment device for water resource management, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A river interception and treatment device for water resource management, including: The processing chamber is equipped with an inlet and a drain. The two ends of the body of the processing chamber are set as semicircles. The drain is located at the end of the semicircular body. The drain is equipped with an opening and closing valve that controls the opening or closing of the drain by its own lifting. A transmission unit is installed inside the treatment chamber. Both ends of the transmission unit are equipped with collection mechanisms. One end of the collection mechanism abuts against the inner wall of the treatment chamber, and the other end of the collection mechanism is rotatably connected to the transmission unit. The transmission unit can drive the two collection mechanisms to make a circular motion that moves closer to each other and along the inner wall of the treatment chamber, thereby collecting and treating floating impurities on the sewage in the treatment chamber. When the drain outlet is used in conjunction with the on / off valve to discharge sewage, water flow will be generated, and the collected floating impurities will move with the water flow and be discharged from the drain outlet. The storage unit, located outside the treatment chamber at the drain outlet, is used to separate and collect floating impurities discharged from the drain outlet from the sewage.

[0006] Furthermore, the collection mechanism includes a vertical plate and a support plate connected to the vertical plate. A filter screen is provided on the vertical plate, and a rotating shaft is provided at one end of the vertical plate. The vertical plate is connected to the transmission unit through the rotating shaft.

[0007] Furthermore, one end of the support plate is provided with a limiting protrusion, and the other end of the support plate is provided with a limiting groove that cooperates with the limiting protrusion.

[0008] Furthermore, the transmission unit includes a housing, two transmission shafts disposed within the housing cavity, and a power source disposed on the housing. The shafts are inserted and connected to the end of the housing and are provided with a secondary gear. The two transmission shafts are respectively provided with a main gear and a steering gear. The power source is connected to one end of the transmission shaft with the main gear. One side of the main gear is meshed with one side of the steering gear, and the other side of the main gear is meshed with one of the secondary gears. The other side of the steering gear is meshed with the other secondary gear.

[0009] Furthermore, the rotating shaft is rotatably connected to the housing via a bearing.

[0010] Furthermore, a sealing plate is provided between the bottom surface of the processing chamber and the transmission unit, and both ends of the sealing plate are connected to the inner wall of the processing chamber. Several mud discharge pipes are provided at the bottom of the processing chamber.

[0011] Furthermore, the bottom of the processing chamber is inclined downward along its length, and the sludge discharge pipe is located at the lowest point of the bottom.

[0012] Furthermore, the opening and closing valve includes a valve body, a flow guide channel disposed at the end of the valve body, and fixed plates disposed on both sides of the valve body. A telescopic mechanism is disposed outside the processing chamber at a position corresponding to the opening and closing valve, and one end of the telescopic mechanism is connected to the fixed plate.

[0013] Furthermore, the storage unit includes an outer cover and an inner liner disposed at the port of the outer cover. A drain pipe is provided at the bottom of the outer cover, and the inner liner can filter out floating impurities in the sewage and only allow sewage to fall into the inner cavity of the outer cover.

[0014] Furthermore, there are receiving cavities on both sides of the outer cover port, and connecting rods are provided on the corresponding positions on both sides of the inner liner. The connecting rods are placed in the receiving cavities, and one end of the connecting rod is connected to a handle.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. Achieved continuous and efficient automated pollution interception: By incorporating a transmission unit and two synchronously reversible collection mechanisms within the treatment chamber, the traditional intermittent, reset-required unidirectional retrieval mode is transformed into a continuous, cyclical, automated "push-sweep-collect-discharge" operation mode. After completing one cycle, the device can immediately reverse its direction from its current position to begin the next cycle without needing to pause or reset, significantly improving the continuous interception and removal efficiency of floating debris in waterways.

[0016] 2. Optimized impurity collection and separation process: Utilizing the unique semi-circular design at both ends of the processing chamber and the circumferential movement of the collection mechanism along the chamber wall, floating impurities can be efficiently and quickly collected to the drain outlet at the end without any blind spots. When the valve is opened to drain water, the naturally formed water flow power smoothly carries the collected floating impurities out and into the downstream storage unit. This process organically combines the collection, transfer, and initial separation (removal of the water and impurity mixture from the processing chamber), resulting in a smooth process and lower energy consumption.

[0017] 3. Improved practicality and adaptability of the device: This device overcomes the pain points commonly found in existing technologies, such as the need for manual removal of impurities, cumbersome device resetting, and poor operational continuity. Its workflow is more suited to the actual working conditions of continuous floating debris input into the river, achieving continuous or quasi-continuous operation of "water intake-treatment-drainage / sewage discharge," reducing the frequency and intensity of manual intervention, and significantly improving its practicality, reliability, and overall operational efficiency in water resource management projects.

[0018] 4. Effective separation and collection of impurities and wastewater are achieved: By setting up an independent storage unit, the internal filter tank can intercept and collect floating impurities discharged with the water flow, while the wastewater is discharged through the drain pipe, thus achieving complete separation and classified disposal of floating impurities and wastewater, avoiding secondary pollution, and facilitating the subsequent centralized removal and treatment of impurities. Attached Figure Description

[0019] Figure 1 This is a top view of the overall structure in an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the collection mechanism in an embodiment of the present invention.

[0021] Figure 3 This is a front view of the internal structure of the processing chamber in an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the transmission unit in an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram illustrating the coordination of the collection mechanism in an embodiment of the present invention.

[0024] Figure 6 This is a front view of the external structure of the processing chamber in an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the opening and closing valve in an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the external structure of the storage unit in an embodiment of the present invention.

[0027] Figure 9 for Figure 8 Enlarged diagram of part A in the image.

[0028] The components include: 1. Base; 2. Processing chamber; 3. Inlet; 4. Transmission unit; 401. Housing; 402. Bushing; 403. Drive shaft; 404. Power source; 405. Main gear; 406. Steering gear; 407. Secondary gear; 5. Collection mechanism; 501. Vertical plate; 502. Filter screen; 503. Support plate; 504. Rotating shaft; 505. Limiting protrusion; 506. Limiting groove; 6. Drain outlet; 7. Telescopic mechanism; 8. Opening and closing valve. 801. Valve body; 802. Flow guide channel; 803. Fixing plate; 804. Sealing gasket; 9. Power supply unit; 10. Support rod; 11. Operating table; 12. Control panel; 13. Water level sensor; 14. Sludge discharge pipe; 15. Regulating valve; 16. Storage unit; 1601. Outer cover; 1602. Drain pipe; 1603. Receptacle; 1604. Inner liner; 1605. Connecting rod; 1606. Handle; 17. Sealing plate; 18. Sealing seat. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1: Please refer to Figure 1 , 35, 6, A river interception and treatment device for water resource management includes a treatment chamber 2, a transmission unit 4, and a storage unit 16. The treatment chamber 2 is fixedly installed on the base 1 by bolts. The treatment chamber 2 is provided with an inlet 3 and an outlet 6. The two ends of the body of the treatment chamber 2 are set as semicircles. The number of outlets 6 is set to two, and each outlet 6 is located at the center of the end of the semicircular body. An on / off valve 8 is provided inside the outlet 6 to control the opening or closing of the outlet 6. The transmission unit 4 is vertically fixed in the center of the inner cavity of the treatment chamber 2 by a support rod 10. In this embodiment, the support rod 10 is set as a hollow rod structure, and the inside is used to lay wires. A power supply unit 9 is fixedly installed at the bottom of the base 1 by a slot, and a control panel 11 is installed on the upper surface of the base 1 by bolts. The transmission unit 4 can be electrically connected to the power supply unit 9 and the control panel 11 through the wires laid in the support rod 10. The control panel 11 is provided with a control panel 12 for controlling the start, stop, and operating parameters of the transmission unit 4. Both ends of the transmission unit 4 are equipped with collection mechanisms 5. The outer edge of the upright plate 501 of the collection mechanism 5 maintains a small gap and slides in contact with the inner wall of the treatment chamber 2. The other end of the collection mechanism 5 is rotatably connected to the transmission unit 4 through a rotating shaft 504, and the axis of the rotating shaft 504 is precisely aligned with the center of the semi-circular box. The transmission unit 4 can drive the two collection mechanisms 5 to rotate synchronously in the same direction of the drain outlet 6. When the collection mechanism 5 rotates, its upright plate 501 will sweep across the corresponding internal area of ​​the semi-circular box, thereby pushing and collecting the floating impurities on the surface of the sewage in the treatment chamber 2. When the valve 8 at the target drain outlet 6 is opened to drain water, a water flow will be generated pointing towards the drain outlet 6. The collected floating impurities will move with this water flow and be discharged from the drain outlet 6. The storage unit 16 is fixedly installed outside the treatment chamber 2, directly below the drain outlet 6, by a bracket, and is used to receive, separate, and collect the floating impurities discharged with the sewage.

[0031] Please see Figure 1-3The collection mechanism 5 includes a vertical plate 501 and a support plate 503 perpendicularly connected to the vertical plate 501. One end face of the vertical plate 501 is fixedly connected to the middle of the support plate 503 by welding or integral molding. This structure ensures that the vertical plate 501 can effectively collect and push floating impurities through the support plate 503, regardless of whether it rotates clockwise or counterclockwise, thus achieving the collection function. A filter screen 502 is embedded or welded onto the vertical plate 501. The filter screen 502 can effectively intercept and push floating impurities, while allowing sewage to pass through smoothly without hindering its flow, thereby achieving the initial separation and collection of impurities and sewage. As an equivalent alternative, several evenly distributed filter holes can be directly opened on the vertical plate 501 to replace the filter screen 502. A rotating shaft 504 is fixedly connected to one end of the vertical plate 501, and the vertical plate 501 is rotatably connected to the housing 401 of the transmission unit 4 through the rotating shaft 504. In this embodiment, a water level sensor 13 is installed on the inner wall of the treatment chamber 2. The water level sensor 13 monitors and controls the amount of sewage injected into the treatment chamber 2. When the sewage level is maintained at the middle position of the filter screen 502, the filter screen 502 can most effectively capture and collect all floating impurities during its movement. In this embodiment, the upright plate 501 and the support plate 503 can be made of Teflon plastic sheet with self-lubricating properties, or a smooth metal plate with a surface treated by electroplating, sandblasting, etc., to reduce frictional resistance. It is recommended that the filter screen 502 be made of stainless steel or engineering plastic. The mesh density needs to be set according to the size of the target impurities to prevent floating impurities from piercing or getting stuck. At the same time, its surface can be sprayed with a hydrophobic smooth coating. Through this series of settings, the surface smoothness and hydrophobicity of the entire collection mechanism 5 are significantly improved, minimizing the adhesion and residue of floating impurities.

[0032] Please see Figure 2 , 5 The support plate 503 has a limiting protrusion 505 at one end facing the other collection mechanism 5, and a corresponding limiting groove 506 at the other end. When both collection mechanisms 5 are rotated to the same end of the processing chamber 2 and are in a combined state, the two support plates 503 are tightly connected by the insertion and engagement of the limiting protrusion 505 and the limiting groove 506, thereby forming a continuous bottom plane between them, effectively preventing the collected floating impurities from leaking from the bottom gap between the two upright plates 501.

[0033] Please see Figure 3 , 4The transmission unit 4 includes a housing 401 bolted to the top of the support rod 10, two parallel transmission shafts 403 mounted inside the housing 401 via bushings 402, and a power source 404 fixed to the top of the housing 401 via a bracket. The rotating shaft 504 is rotatably connected to the end of the housing 401 via a bearing assembly, and a secondary gear 407 is fixedly mounted on one end of the rotating shaft 504 inside the housing. The power source 404 is preferably a servo motor or a geared motor, and its output shaft is directly connected to one end of one of the transmission shafts 403 via a coupling to provide precise and controllable power. A main gear 405 and a steering gear 406 are respectively fixedly mounted on the two transmission shafts 403 via key connections. The power source 404 drives the transmission shaft 403, on which the main gear 405 is mounted, to rotate. One side of the tooth surface of the main gear 405 meshes with one side of the tooth surface of the steering gear 406, while the other side of its tooth surface meshes with one of the auxiliary gears 407. The other side of the tooth surface of the steering gear 406 meshes with the other auxiliary gear 407. In this embodiment, the main gear 405, the steering gear 406, and the two auxiliary gears 407 are all designed as standard gears with the same module and number of teeth to ensure that the two collecting mechanisms 5 can achieve perfectly synchronized but opposite circular motions with symmetrical trajectories.

[0034] For preferred options, please refer to [link / reference]. Figure 1 , 3 To prevent sedimentary hard impurities such as silt and small stones that may be present in the wastewater from being discharged along with floating impurities during drainage and interfering with the operation of the storage unit 16, a sealing plate 17 is fixedly installed between the bottom surface of the treatment chamber 2 and the support rod 10 of the transmission unit 4. The two sides of the sealing plate 17 are welded or sealed to the inner wall of the treatment chamber 2, isolating the bottom area of ​​the treatment chamber 2 into a sedimentation tank. Several sludge discharge pipes 14 are connected to the lowest point of the bottom of the treatment chamber 2. Manual or electric regulating valves 15 are installed on the sludge discharge pipes 14 to periodically discharge the impurities and sludge that have settled at the bottom out of the treatment chamber 2.

[0035] Example 2: See Figure 1 , 67. Based on Embodiment 1, the opening and closing valve 8 includes a valve body 801, a flow guide channel 802 disposed at the top of the valve body 801 and communicating with it, and fixed plates 803 symmetrically disposed on both sides of the valve body 801. A telescopic mechanism 7 is fixedly installed on the outer wall of the treatment chamber 2 above each drain outlet 6 via a bracket. The flow guide channel 802 is designed in a funnel shape that slopes outward and downward, effectively guiding the mixed flow of sewage and floating impurities to flow smoothly and accurately into the storage unit 16 below. The piston rod end of the telescopic mechanism 7 is connected to the fixed plate 803 via a hinge or ball joint. The telescopic mechanism 7 can be a waterproof electric push rod or a cylinder, capable of precisely controlling the vertical lifting and lowering movement of the opening and closing valve 8 within the drain outlet 6 to realize the opening and closing of the valve.

[0036] For preferred options, please refer to [link / reference]. Figure 1 , 7 To significantly improve the sealing effect between the valve body 801 and the inner wall of the drain outlet 6 and prevent leakage, annular sealing seats 18 are machined on the inner walls on both sides of the drain outlet 6. Correspondingly, sealing gaskets 804 are embedded on the outer walls on both sides of the valve body 801. The sealing gaskets 804 are preferably made of corrosion-resistant, highly elastic rubber or silicone. When the valve 8 is in the closed state, the sealing gaskets 804 are precisely embedded and tightly pressed into the sealing seats 18, thereby forming a reliable static seal.

[0037] Example 3: See Figure 1 , 8 Based on Embodiments 1 and 2, the storage unit 16 includes an outer cover 1601 fixed by a bracket and an inner liner 1604 detachably placed at the port of the outer cover 1601. A drain pipe 1602 is provided at the center of the bottom of the outer cover 1601, and the bottom and / or sidewalls of the inner liner 1604 are provided with dense filter holes or a filter screen, enabling it to intercept and collect all floating impurities entering with the water flow into the inner liner 1604. The separated wastewater falls through the filter structure into the inner cavity of the outer cover 1601 and is finally discharged from the drain pipe 1602.

[0038] Please see Figure 8 , 9 To facilitate the removal and cleaning of the inner liner 1604 filled with impurities from the outer cover 1601, upward-opening receiving cavities 1603 are provided on the outer walls on both sides of the port of the outer cover 1601. Connecting rods 1605 are fixedly installed on corresponding positions on both sides of the inner liner 1604. During installation, both ends of the connecting rods 1605 rest on the receiving cavities 1603, thereby suspending the inner liner 1604 above the port of the outer cover 1601. One end of the connecting rod 1605 extends to form or connect to a handle 1606 for easy manual extraction.

[0039] Working Principle: In the initial state, the two collection mechanisms 5 are moved and merged at one end of the treatment chamber 2, bringing them close to the drain outlet 6 at that end. Then, a fixed amount of wastewater is injected into the treatment chamber 2 through the inlet 3 to the set level. The power source 404 is activated via the control panel 11, driving the main gear 405 to rotate. This, in turn, through the meshing transmission of the gear system (main gear 405, steering gear 406, and two auxiliary gears 407), drives the two rotating shafts 504 to perform opposite circular motions on their respective collection mechanisms 5. The vertical plates 501 of the two collection mechanisms 5 simultaneously sweep across the semi-circular area, efficiently pushing and collecting floating impurities on the surface of the liquid in the treatment chamber 2 to the other end (i.e., near the other drain outlet 6). Then, the telescopic mechanism 7 corresponding to the drain outlet 6 at that end is slowly retracted, causing the opening / closing valve 8 to move downwards and open the drain outlet 6. The directional water flow generated by the drainage will lift up the floating impurities that have gathered here, and they will flow along with the sewage through the guide channel 802 into the inner tank 1604 of the storage unit 16 below. The inner tank 1604 traps and collects the floating impurities, while the sewage passes through the filter holes into the outer cover 1601 and is discharged from the drain pipe 1602. After one round of treatment is completed, the on / off valve 8 is closed, and an appropriate amount of sewage is injected again through the inlet 3. Then, the control transmission unit 4 drives the collection mechanism 5 to perform a circular motion in the opposite direction to the previous round, pushing the newly collected floating impurities back to the original starting end, and discharging them through the drain port 6 at that end and the storage unit 16. This cycle is repeated, thus achieving efficient and continuous automatic recovery and treatment of floating impurities from continuously injected sewage.

Claims

1. A river interception and treatment device for water resource management, characterized in that, include: The processing chamber (2) is provided with an inlet (3) and a drain (6). The two ends of the body of the processing chamber (2) are set as semicircular. The drain (6) is located at the end of the semicircular body. The drain (6) is provided with an opening and closing valve (8) that controls the opening or closing of the drain (6) by its own lifting. The transmission unit (4) is set in the inner cavity of the treatment chamber (2). Both ends of the transmission unit (4) are provided with collection mechanisms (5). One end of the collection mechanism (5) abuts against the inner wall of the treatment chamber (2), and the other end of the collection mechanism (5) is rotatably connected to the transmission unit (4). The transmission unit (4) can drive the two collection mechanisms (5) to make a circular motion that moves closer to each other and along the inner wall of the treatment chamber (2) in order to collect and process the floating impurities on the sewage in the treatment chamber (2). When the drain outlet (6) is used in conjunction with the on / off valve (8) to discharge sewage, water flow will be generated, and the collected floating impurities will move with the water flow and be discharged from the drain outlet (6). The storage unit (16) is located outside the treatment chamber (2) and at the drain outlet (6) to separate and collect floating impurities discharged from the drain outlet (6) from the sewage.

2. The river interception and treatment device for water resource management according to claim 1, characterized in that, The collection mechanism (5) includes a vertical plate (501) and a support plate (503) connected to the vertical plate (501). A filter screen (502) is provided on the vertical plate (501), and a rotating shaft (504) is provided at one end of the vertical plate (501). The vertical plate (501) is connected to the transmission unit (4) through the rotating shaft (504).

3. The river interception and treatment device for water resource management according to claim 2, characterized in that, One end of the support plate (503) is provided with a limiting protrusion (505), and the other end of the support plate (503) is provided with a limiting groove (506) that cooperates with the limiting protrusion (505).

4. The river interception and treatment device for water resource management according to claim 2, characterized in that, The transmission unit (4) includes a housing (401), two transmission shafts (403) disposed in the inner cavity of the housing (401), and a power source (404) disposed on the housing (401). The rotating shaft (504) is inserted and connected to the end of the housing (401), and a secondary gear (407) is disposed on the rotating shaft (504). A main gear (405) and a steering gear (406) are respectively disposed on the two transmission shafts (403). The power source (404) is connected to one end of the transmission shaft (403) with the main gear (405). One side of the main gear (405) is meshed with one side of the steering gear (406), and the other side of the main gear (405) is meshed with one of the secondary gears (407). The other side of the steering gear (406) is meshed with the other secondary gear (407).

5. The river interception and treatment device for water resource management according to claim 4, characterized in that, The rotating shaft (504) is rotatably connected to the housing (401) via a bearing (402).

6. The river interception and treatment device for water resource management according to claim 1, characterized in that, A sealing plate (17) is provided between the bottom surface of the processing chamber (2) and the transmission unit (4). The two ends of the sealing plate (17) are connected to the inner wall of the processing chamber (2). Several mud discharge pipes (14) are provided at the bottom of the processing chamber (2).

7. The river interception and treatment device for water resource management according to claim 1, characterized in that, The bottom of the processing chamber (2) is inclined downward along its length, and the sludge discharge pipe (14) is located at the lowest point of the bottom.

8. The river interception and treatment device for water resource management according to claim 1, characterized in that, The opening and closing valve (8) includes a valve body (801), a flow guide channel (802) provided at the end of the valve body (801), and a fixing plate (803) provided on both sides of the valve body (801). A telescopic mechanism (7) is provided outside the processing chamber (2) at a position corresponding to the opening and closing valve (8). One end of the telescopic mechanism (7) is connected to the fixing plate (803).

9. The river interception and treatment device for water resource management according to claim 1, characterized in that, The storage unit (16) includes an outer cover (1601) and an inner liner (1604) provided at the port of the outer cover (1601). A drain pipe (1602) is provided at the bottom of the outer cover (1601). The inner liner (1604) can filter out floating impurities in the sewage and only allow sewage to fall into the inner cavity of the outer cover (1601).

10. The river interception and treatment device for water resource management according to claim 9, characterized in that, The outer cover (1601) has a receiving cavity (1603) on both sides of the port, and the inner liner (1604) has a connecting rod (1605) on the corresponding side. The connecting rod (1605) is placed in the receiving cavity (1603), and one end of the connecting rod (1605) is connected to a handle (1606).

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