Pressurized water test device for engineering geological survey
By introducing automatic drilling mechanism and pressurized water assembly into the engineering geological survey water pressure test device, the problem of inefficiency in the existing technology is solved, efficient drilling and pressurized water operation without manual hole digging, and working efficiency is improved and ease of operation.
Patent Information
- Application Number
- CN202420838441.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-22
AI Technical Summary
When conducting water pressure testing equipment for engineering geological surveys, staff need to dig holes in advance and then press water into the holes. The efficiency is low, which increases labor intensity and cannot meet the needs of on-site drilling work.
A drilling mechanism including hydraulic cylinder, push rod, servo motor, drill bit and water pressure component is designed. The drill bit is driven by the servo motor, and the hydraulic cylinder drives the push rod and the moving plate to move. The drill bit can be automatically opened and passed through the pressure. The water component directly presses the water into the drilled hole to simplify the operation process.
There is no need for manual hole digging, which greatly improves work efficiency and is simple overall operation, eliminating the separation of drilling and water pressing steps, which significantly improves work efficiency.
Smart Images

Figure CN222299445U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of geological survey, in particular to a water pressure test device for engineering geological survey. Background Art
[0002] In the process of engineering geological investigation, the water pressure test is an in-situ test that uses high-pressure water to pressurize water into the borehole, and calculates the development of rock cracks and permeability based on the water absorption of the rock mass. The water pressure test uses special water-stopping equipment to isolate a certain length of the borehole test section, and then uses a fixed water head to press water into this section of the borehole. The water penetrates into the rock mass through the cracks around the hole wall, and the amount of water that eventually penetrates will tend to a stable value. The strength of the rock permeability can be determined based on the water pressure head, test section length and stable infiltration water volume.
[0003] The Chinese utility model patent currently announced as CN211669033U discloses a water pressure test device for engineering geological survey, which is provided with universal wheels, and the end of the fixed frame close to the wheel bracket is fixedly connected to a hydraulic telescopic rod, the end of the hydraulic telescopic rod away from the fixed frame is fixedly connected to a support base, the top of the fixed frame is fixedly connected to a water tank, the end of the water tank away from the fixed frame is fixedly connected to a water pump, and the end of the water pump away from the water tank is fixedly connected to a water supply pipe. This water pressure test device for engineering geological survey pushes the fixed frame, and the thrust is applied to the wheel bracket through the fixed frame, so that the wheel bracket applies a force to the universal wheel, and the universal wheel is moved by the force, so that the universal wheel drives the fixed frame to move through the wheel bracket, and then the water pressure test device is moved, which is convenient for moving the device, saves a lot of time, and improves the efficiency of geological survey.
[0004] Although this patent is capable of conducting water pressure tests on test sections of different lengths, thereby being able to test out different test data, and being able to improve the accuracy of the test structure and the efficiency of the test according to different test data, when conducting the water pressure test, the staff needs to dig a hole in advance and then pressurize water into the hole. This method is inefficient, increases the labor intensity of the staff, and cannot well meet the needs of on-site drilling work. Utility Model Content
[0005] The purpose of the utility model is to provide a water pressure test device for engineering geological survey, which solves the problem that the existing water pressure test device for engineering geological survey needs to dig a hole in advance and then pressurize water into the hole when conducting a water pressure test. This method is inefficient, increases the labor intensity of the staff, and cannot well meet the needs of on-site drilling work.
[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a water pressure test device for engineering geological survey, comprising a bottom plate, a U-shaped support frame is fixedly connected to the top of the bottom plate, a drilling mechanism is arranged between the U-shaped support frame and the bottom plate, a water pressure assembly is arranged on the top of the bottom plate and is located on one side of the U-shaped support frame, and a locking assembly used in conjunction with the water pressure assembly is arranged at the bottom of the bottom plate;
[0007] The drilling mechanism includes a hydraulic cylinder, a push rod, a movable plate, a servo motor, a drill bit and a first through hole. The hydraulic cylinder is bolted to the top of the U-shaped support frame, the push rod is fixedly connected to the output end of the hydraulic cylinder and passes through the U-shaped support frame, the movable plate is fixedly connected to the bottom of the push rod, the servo motor is bolted to the bottom of the movable plate, the drill bit is fixedly connected to the output end of the servo motor, and the first through hole passes through the bottom plate and is used in conjunction with the drill bit.
[0008] The above technical solution is adopted, by setting a hydraulic cylinder, a push rod, a movable plate, a servo motor, a drill bit, a first through hole and a water pressure component. When in use, the servo motor is started to drive the drill bit to rotate. At this time, the hydraulic cylinder is started again to drive the push rod to move downward. At the same time, the push rod will drive the movable plate to move downward, and the movable plate will drive the servo motor to move downward. The drill bit will contact the ground through the first through hole. As the hydraulic cylinder continuously drives the push rod to move downward, the drill bit will drill holes in the ground. There is no need for workers to manually dig holes, which greatly improves work efficiency. By setting up a water pressure component, it is convenient to pressurize water into the drilled holes. The overall operation is simple, and there is no need to perform the drilling and water pressure steps separately, which greatly improves work efficiency.
[0009] The utility model is further configured as follows: the water pressure assembly includes a water tank, a water suction pipe, a water pump, a folding hose, a water injector, a second through hole and a meter; the water tank is fixedly connected to the top of the base plate; one end of the water suction pipe passes through the water tank and is fixedly connected to the water tank; the water pump is bolted to the side wall of the water tank and is used in conjunction with the water suction pipe; the folding hose is fixedly connected to the other end of the water suction pipe; the water injector is fixedly connected to the bottom of the folding hose; the second through hole passes through the base plate and is used in conjunction with the water injector; and the meter is arranged on the side wall of the water suction pipe.
[0010] By adopting the above technical scheme, a water tank, a water suction pipe, a water pump, a folding hose, a water injector, a second through hole and a meter are set. When the bottom plate drives the second through hole to correspond to the position of the drilled hole, one end of the folding hose drives the water injector through the second through hole and is inserted into the drilled hole. The contraction of the folding hose facilitates regular maintenance of the water injector. Then, the water pump is started to draw the water in the water tank into the folding hose through the water suction pipe, so that the water can be pressed into the drilled hole. The overall operation is simple, and there is no need to perform the drilling and water pressing steps separately, which greatly improves work efficiency.
[0011] The utility model is further configured as follows: the locking assembly includes a locking plate, a connecting plate and a hand-tightening bolt, the locking plate is hinged to the two side walls of the water injector, the connecting plate is fixedly connected to the bottom of the base plate and is used in conjunction with the locking plate, and the hand-tightening bolt passes through the connecting plate to the interior of the locking plate and is threadedly connected to the locking plate.
[0012] By adopting the above technical solution, a locking plate, a connecting plate and a hand-tightening bolt are set. When the locking plate is rotated to be parallel to the water injector, the water injector can completely pass through the second through hole. When the water injector is inserted into the drilled hole, the locking plate is rotated perpendicular to the water injector so that the position of the hole on the locking plate corresponds to the position of the hole on the connecting plate, and then the locking plate and the connecting plate are locked and fixed using the hand-tightening bolt, so as to stabilize the water injector inserted into the drilled hole and avoid the water pressed into the hole from being ejected from the water injector due to excessive pressure.
[0013] The utility model is further configured as follows: two side walls of the movable plate are fixedly connected to two limit blocks, and the inner side wall of the U-shaped support frame is provided with a limit groove slidably connected to the limit block.
[0014] By adopting the above technical solution, by setting the limit block and the limit groove, when the movable plate is moving, the movable plate will drive the limit block to move along the trajectory of the limit groove, thereby limiting and guiding the moving trajectory of the movable plate, greatly improving the stability of the movable plate when moving.
[0015] The utility model is further configured as follows: a scraper ring used in conjunction with a drill bit is arranged inside the first through hole, four reinforcement rods are fixedly connected to the side wall of the scraper ring, and one end of the four reinforcement rods is fixedly connected to the inner side wall of the first through hole.
[0016] By adopting the above technical solution, by setting up a scraper ring and a reinforcement rod, after the drilling is completed, the drill bit will be lifted up, and the scraper ring will scrape off the mud adhering to the periphery of the drill bit to prevent it from scattering on the top of the bottom plate.
[0017] The utility model is further configured as follows: four universal wheels are bolted to the bottom of the base plate, the four universal wheels are respectively located at four corners of the bottom of the base plate, and a push handle is fixedly connected to the top of the base plate.
[0018] By adopting the above technical solution, by providing universal wheels and a push handle, the staff can push the push handle to move the bottom plate through the universal wheels, thereby facilitating the rapid transfer of the entire device and improving the flexibility of the entire device.
[0019] The utility model is further configured as follows: a support rod is fixedly connected to the top of the bottom plate, and a U-shaped plate used in conjunction with a water pump is fixedly connected to the top of the support rod.
[0020] By adopting the above technical solution, the support rod and the U-shaped plate are provided, so that the pumping pipe can be supported and stabilized, thereby improving the stability of the pumping pipe when pumping water.
[0021] The utility model is further configured as follows: a water injection pipe is fixedly connected to the top of the water storage tank, one end of the water injection pipe passes through the water storage tank, and the other end of the water injection pipe is spirally connected to a sealing cover.
[0022] By adopting the above technical solution, a water injection pipe and a sealing cover are provided, so that water can be added into the water storage tank through the water injection pipe. The sealing cover can block the water injection pipe to prevent external debris from entering the interior of the water storage tank through the water injection pipe.
[0023] In summary, the utility model has the following beneficial effects:
[0024] By setting up a drilling mechanism, the drill bit will drill holes in the ground, eliminating the need for workers to dig holes manually, greatly improving work efficiency.
[0025] By setting up a water pressure component, it is convenient to press water into the drilled holes. The overall operation is simple, and there is no need to perform the drilling and water pressure steps separately, which greatly improves work efficiency.
[0026] By providing a locking assembly, the water injector inserted into the drilled hole can be stabilized to prevent the water pressed into the hole from being pushed out due to excessive pressure.
[0027] Based on the above improvements, the overall technical effect achieved by the device is that the overall operation is simple, and there is no need to perform the drilling and water pressing steps separately, which greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0029] Figure 2 It is a structural schematic diagram of the drilling mechanism of the utility model;
[0030] Figure 3 It is a structural schematic diagram of the water pressure assembly of the utility model;
[0031] Figure 4 It is a structural schematic diagram of the locking assembly of the utility model;
[0032] Figure 5 It is a structural schematic diagram of the limit block and the limit groove of the utility model;
[0033] Figure 6 It is a structural schematic diagram of the mud scraper ring and the reinforcement rod of the utility model;
[0034] Figure 7 It is a structural schematic diagram of the water injection pipe and the sealing cover of the utility model;
[0035] Figure 8 The utility model is a structural schematic diagram of a universal wheel, a push handle, a support rod and a U-shaped plate.
[0036] In the figure, 1, bottom plate; 2, U-shaped support frame; 3, drilling mechanism; 301, hydraulic cylinder; 302, push rod; 303, moving plate; 304, servo motor; 305, drill bit; 306, first through hole; 4, water pressure assembly; 401, water storage tank; 402, water suction pipe; 403, water pump; 404, folding hose; 405, water injector; 406, second through hole; 407, meter; 5, locking assembly; 501, locking plate; 502, connecting plate; 503, hand-tightening bolt; 6, limit block; 7, limit groove; 8, scraper ring; 9, reinforcement rod; 10, universal wheel; 11, push handle; 12, support rod; 13, U-shaped plate; 14, water injection pipe; 15, cover. DETAILED DESCRIPTION
[0037] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0038] Example:
[0039] See also Figure 1-Figure 8 The utility model provides a technical solution: a water pressure test device for engineering geological survey, including a base plate 1, a U-shaped support frame 2 is fixedly connected to the top of the base plate 1, a drilling mechanism 3 is arranged between the U-shaped support frame 2 and the base plate 1, a water pressure component 4 is arranged on the top of the base plate 1 and is located on one side of the U-shaped support frame 2, and a locking component 5 used in conjunction with the water pressure component 4 is arranged at the bottom of the base plate 1.
[0040] The drilling mechanism 3 includes a hydraulic cylinder 301, a push rod 302, a movable plate 303, a servo motor 304, a drill bit 305 and a first through hole 306. The hydraulic cylinder 301 is bolted to the top of the U-shaped support frame 2, the push rod 302 is fixedly connected to the output end of the hydraulic cylinder 301 and passes through the U-shaped support frame 2, the movable plate 303 is fixedly connected to the bottom of the push rod 302, the servo motor 304 is bolted to the bottom of the movable plate 303, the drill bit 305 is fixedly connected to the output end of the servo motor 304, and the first through hole 306 passes through the bottom plate 1 and is used in conjunction with the drill bit 305. 6 and the water pressure component 4. When in use, start the servo motor 304 to drive the drill bit 305 to rotate. At this time, start the hydraulic cylinder 301 to drive the push rod 302 to move downward. At the same time, the push rod 302 will drive the movable plate 303 to move downward, and the movable plate 303 will drive the servo motor 304 to move downward. The drill bit 305 will contact the ground through the first through hole 306. The hydraulic cylinder 301 continuously drives the push rod 302 to move downward, so that the drill bit 305 will drill holes in the ground. There is no need for workers to manually dig holes, which greatly improves work efficiency. By setting the water pressure component 4, it is convenient to pressurize water into the drilled holes. The overall operation is simple, and there is no need for manual drilling in advance, which greatly improves work efficiency.
[0041] refer to Figure 3 The water pressure assembly 4 includes a water tank 401, a water suction pipe 402, a water pump 403, a foldable hose 404, a water injector 405, a second through hole 406 and a meter 407. The water tank 401 is fixedly connected to the top of the bottom plate 1. One end of the water suction pipe 402 passes through the water tank 401 and is fixedly connected to the water tank 401. The water pump 403 is bolted to the side wall of the water tank 401 and is used in conjunction with the water suction pipe 402. The foldable hose 404 is fixedly connected to the other end of the water suction pipe 402. The water injector 405 is fixedly connected to the bottom of the foldable hose 404. The second through hole 406 passes through the bottom plate 1 and is used in conjunction with the water injector 405. The meter 407 is arranged on the side of the water suction pipe 402. The wall is provided with a water tank 401, a water suction pipe 402, a water pump 403, a foldable hose 404, a water injector 405, a second through hole 406 and a meter 407. When the bottom plate 1 drives the second through hole 406 to correspond to the position of the drilled hole, one end of the foldable hose 404 drives the water injector 405 to be inserted into the drilled hole through the second through hole 406. By contracting the foldable hose 404, it is convenient to regularly maintain the water injector 405. Then, the water pump 403 is started to draw the water in the water tank 401 into the foldable hose 404 through the water suction pipe 402, so that the water can be pressed into the drilled hole. The overall operation is simple, and there is no need to drill holes manually in advance, which greatly improves work efficiency.
[0042] refer to Figure 4The locking assembly 5 includes a locking plate 501, a connecting plate 502 and a hand-tightening bolt 503. The locking plate 501 is hinged to the two side walls of the water injector 405. The connecting plate 502 is fixedly connected to the bottom of the base plate 1 and is used in conjunction with the locking plate 501. The hand-tightening bolt 503 penetrates the connecting plate 502 to the inside of the locking plate 501 and is threadedly connected to the locking plate 501. By setting the locking plate 501, the connecting plate 502 and the hand-tightening bolt 503, when the locking plate 501 rotates parallel to the water injector 405, the water injector 405 is The water injector 405 can completely pass through the second through hole 406. When the water injector 405 is inserted into the drilled hole, the locking plate 501 is rotated to be perpendicular to the water injector 405 so that the hole on the locking plate 501 corresponds to the position of the hole on the connecting plate 502, and then the locking plate 501 and the connecting plate 502 are locked and fixed using the hand-tightened bolts 503, so as to facilitate stabilizing the water injector 405 inserted into the drilled hole and avoid the water pressed into the hole from being ejected due to excessive pressure.
[0043] refer to Figure 5 Two side walls of the movable plate 303 are fixedly connected with two limit blocks 6, and the inner wall of the U-shaped support frame 2 is provided with a limit groove 7 which is slidably connected with the limit block 6. By setting the limit block 6 and the limit groove 7, when the movable plate 303 is moving, the movable plate 303 will drive the limit block 6 to move along the trajectory of the limit groove 7, thereby limiting and guiding the moving trajectory of the movable plate 303, greatly improving the stability of the movable plate 303 when moving.
[0044] refer to Figure 6 A scraper ring 8 for use with the drill bit 305 is arranged inside the first through hole 306, and four reinforcement rods 9 are fixedly connected to the side wall of the scraper ring 8, and one end of the four reinforcement rods 9 is fixedly connected to the inner wall of the first through hole 306. By arranging the scraper ring 8 and the reinforcement rods 9, after the drilling is completed, the drill bit 305 will be lifted, and the scraper ring 8 will scrape off the mud adhered to the periphery of the drill bit 305 to prevent it from scattering to the top of the bottom plate 1.
[0045] refer to Figure 8 Four universal wheels 10 are bolted to the bottom of the base plate 1, and the four universal wheels 10 are respectively located at the four corners of the bottom of the base plate 1. A push handle 11 is fixedly connected to the top of the base plate 1. By setting the universal wheels 10 and the push handle 11, the staff pushes the push handle 11 to move the base plate 1 through the universal wheels 10, thereby facilitating the rapid transfer of the entire device and improving the flexibility of the entire device.
[0046] refer to Figure 8A support rod 12 is fixedly connected to the top of the bottom plate 1, and a U-shaped plate 13 used in conjunction with the water pumping pipe 402 is fixedly connected to the top of the support rod 12. By arranging the support rod 12 and the U-shaped plate 13, the water pumping pipe 402 can be supported and stabilized, thereby improving the stability of the water pumping pipe 402 when pumping water.
[0047] refer to Figure 7 A water injection pipe 14 is fixedly connected to the top of the water tank 401. One end of the water injection pipe 14 passes through the water tank 401. The other end of the water injection pipe 14 is spirally connected to a sealing cover 15. By arranging the water injection pipe 14 and the sealing cover 15, it is convenient to add water into the water tank 401 through the water injection pipe 14. The sealing cover 15 can block the water injection pipe 14 to prevent external debris from entering the interior of the water tank 401 through the water injection pipe 14.
[0048] Brief description of the use process: When in use, the staff pushes the push handle 11 to move the bottom plate 1 through the universal wheel 10. When the entire device moves to the specified position, the staff turns the brake plate on the universal wheel 10 to fix the entire device, and then starts the servo motor 304 to drive the drill bit 305 to rotate. At this time, the hydraulic cylinder 301 is started to drive the push rod 302 to move downward. At the same time, the push rod 302 will drive the moving plate 303 to move downward, and the moving plate 303 will drive the servo motor 304 to move downward, and the drill bit 305 will rotate. 5 will contact the ground through the first through hole 306, and the hydraulic cylinder 301 will continuously drive the push rod 302 to move downward, so that the drill bit 305 will drill a hole in the ground, without the need for workers to dig holes manually, which greatly improves work efficiency. After the drilling is completed, the hydraulic cylinder 301 is started to drive the push rod 302 to move upward, and the servo motor 304 is started to reverse, so that the drill bit 305 is easily removed from the hole. Then, when the bottom plate 1 drives the second through hole 406 to correspond to the position of the drilled hole through the universal wheel 10, the locking plate 5 01 is rotated parallel to the water injector 405. At this time, the water injector 405 can completely pass through the second through hole 406. One end of the foldable hose 404 drives the water injector 405 through the second through hole 406 and inserts it into the drilled hole. Through the contraction of the foldable hose 404, it is convenient to regularly maintain the water injector 405. One end of the foldable hose 404 is inserted into the drilled hole through the second through hole 406. When the water injector 405 is inserted into the drilled hole, the locking plate 501 is rotated perpendicular to the water injector 405 so that the locking plate 50 1 corresponds to the position of the hole on the connecting plate 502, and then the locking plate 501 and the connecting plate 502 are locked and fixed by using the hand-tightening bolt 503, so as to stabilize the water injector 405 inserted into the drilled hole and avoid the water injected into the hole being pushed out due to excessive pressure, and then start the water pump 403, so that the water in the water storage tank 401 can be pumped into the folding hose 404 through the pumping pipe 402, so as to press the water into the drilled hole, thereby completing the geological survey water pressure test.
[0049] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A water pressure test device for engineering geological survey, comprising a bottom plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a U-shaped support frame (2), a drilling mechanism (3) is provided between the U-shaped support frame (2) and the base plate (1), a water pressure assembly (4) is provided on the top of the base plate (1) and is located on one side of the U-shaped support frame (2), and a locking assembly (5) used in conjunction with the water pressure assembly (4) is provided at the bottom of the base plate (1); The drilling mechanism (3) comprises a hydraulic cylinder (301), a push rod (302), a movable plate (303), a servo motor (304), a drill bit (305) and a first through hole (306); the hydraulic cylinder (301) is bolted to the top of the U-shaped support frame (2); the push rod (302) is fixedly connected to the output end of the hydraulic cylinder (301) and passes through the U-shaped support frame (2); the movable plate (303) is fixedly connected to the bottom of the push rod (302); the servo motor (304) is bolted to the bottom of the movable plate (303); the drill bit (305) is fixedly connected to the output end of the servo motor (304); and the first through hole (306) passes through the bottom plate (1) and is used in conjunction with the drill bit (305).
2. The water pressure test device for engineering geological survey according to claim 1 is characterized in that: The water pressure assembly (4) comprises a water storage tank (401), a water suction pipe (402), a water pump (403), a foldable hose (404), a water injector (405), a second through hole (406) and a meter (407); the water storage tank (401) is fixedly connected to the top of the base plate (1); one end of the water suction pipe (402) passes through the water storage tank (401) and is fixedly connected to the water storage tank (401); the water pump (403) is bolted to the side wall of the water storage tank (401) and is used in conjunction with the water suction pipe (402); the foldable hose (404) is fixedly connected to the other end of the water suction pipe (402); the water injector (405) is fixedly connected to the bottom of the foldable hose (404); the second through hole (406) passes through the base plate (1) and is used in conjunction with the water injector (405); and the meter (407) is arranged on the side wall of the water suction pipe (402).
3. The water pressure test device for engineering geological survey according to claim 1 is characterized in that: The locking assembly (5) comprises a locking plate (501), a connecting plate (502) and a hand-tightening bolt (503); the locking plate (501) is hinged to the two side walls of the water injector (405); the connecting plate (502) is fixedly connected to the bottom of the base plate (1) and used in conjunction with the locking plate (501); the hand-tightening bolt (503) passes through the connecting plate (502) to the inside of the locking plate (501) and is threadedly connected to the locking plate (501).
4. The water pressure test device for engineering geological survey according to claim 1 is characterized in that: Two side walls of the movable plate (303) are fixedly connected to two limit blocks (6), and the inner side wall of the U-shaped support frame (2) is provided with a limit groove (7) slidably connected to the limit block (6).
5. The water pressure test device for engineering geological survey according to claim 1 is characterized in that: A scraper ring (8) for use with the drill bit (305) is arranged inside the first through hole (306), and four reinforcement rods (9) are fixedly connected to the side wall of the scraper ring (8), and one end of the four reinforcement rods (9) is fixedly connected to the inner side wall of the first through hole (306).
6. The water pressure test device for engineering geological survey according to claim 1 is characterized in that: Four universal wheels (10) are bolted to the bottom of the base plate (1), and the four universal wheels (10) are respectively located at the four corners of the bottom of the base plate (1), and a push handle (11) is fixedly connected to the top of the base plate (1).
7. The water pressure test device for engineering geological survey according to claim 2 is characterized in that: The top of the bottom plate (1) is fixedly connected to a support rod (12), and the top of the support rod (12) is fixedly connected to a U-shaped plate (13) used in conjunction with a water pumping pipe (402).
8. The water pressure test device for engineering geological survey according to claim 2 is characterized in that: A water injection pipe (14) is fixedly connected to the top of the water storage tank (401), one end of the water injection pipe (14) passes through the water storage tank (401), and the other end of the water injection pipe (14) is spirally connected to a sealing cover (15).
