Simulation experimental device for the effect of ocean acidification on material corrosion

Abstract

The invention relates to the technical field of ocean simulation, and discloses a simulation experimental device for the influence of ocean acidification on material corrosion. The simulation experimental device for the influence of ocean acidification on material corrosion comprises a body and motors fixed on both sides of the body, fixing frames are fixed on both sides of the body, screws are rotatably mounted on the surface of the fixing frames, the bottom of the screws is located at the driving end of the motor, and a cover is engaged with the top of the body; both sides of the cover are arranged on the outside of the screws through side ears, the side ears are meshed with the screws, a gear is fixed on the top of the screws, and a transmission chain is sleeved on the surface of the gears, and grooves are provided on the four sides of the top of the body; one side of the storage rack is driven to rise by a fixing block and a sleeve shaft to make it in an inclined state, so that the salt water inside the storage tank can be poured into the inside of the water storage tank, and then the water flow is discharged through a first drain pipe through the slope arrangement at the bottom of the water storage tank, so that all acidified salt water can be discharged, so as to avoid damage to the skin due to excessive acidified salt water concentration and contact with the skin when taking the materials.

Description

Technical Field

[0001] The invention relates to the technical field of ocean simulation, in particular to a simulation experimental device for the influence of ocean acidification on material corrosion. Background Art

[0002] Ocean acidification is one of the global environmental issues that has received much attention in recent years. With the rapid development of industrialization and modernization, human activities have not only led to air and soil pollution, but also brought serious impacts on marine ecosystems. Ocean acidification refers to the increase in carbonate concentration in seawater, which causes the pH value of the ocean to decrease. This is due to the increase in carbon dioxide in the atmosphere, part of which is dissolved into the ocean to form carbonic acid, which further generates carbonates. Excessive carbon dioxide reacts with water in the ocean to produce carbonic acid and bicarbonate, resulting in a decrease in the alkalinity of the ocean. This acidic environment has a potential huge impact on marine biodiversity and ecosystem functions.

[0003] When conducting an acidification experiment on a material, the material is first placed in a storage tank, acidified brine is introduced into the storage tank, the storage tank is covered by a machine cover, and acidified brine is continuously added to the gap between the machine cover and the machine body to improve the sealing effect, and finally atomized by an atomizer. In existing experiments, the machine cover is directly opened after the atomization experiment is completed and then the material is taken out. In the prior art, the acidified brine is often not completely discharged when the material is taken out. In such a case, the acidified brine will directly contact the operator's skin when the operator takes out the material, which can easily cause skin damage to the operator for a long time.

[0004] In view of this, the present invention solves the above technical problems by proposing a simulation experimental device for the effect of ocean acidification on material corrosion. Summary of the invention

[0005] In view of the shortcomings of the above-mentioned background technology, the present invention provides a technical solution for a simulation experimental device of the effect of ocean acidification on material corrosion, which can discharge all acidified salt water to avoid damage to the skin due to excessive acidified salt water concentration and contact with the skin when taking materials, thereby solving the problems raised in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a simulation experimental device for the influence of ocean acidification on material corrosion, comprising a machine body and motors fixed on both sides of the machine body, fixing frames are fixed on both sides of the machine body, a screw is rotatably mounted on the surface of the fixing frame, the bottom of the screw is located at the driving end of the motor, and the top of the machine body is engaged with a cover; both sides of the cover are arranged on the outside of the screw through side ears, the side ears are engaged with the screw, a gear is fixed on the top of the screw and a transmission chain is sleeved on the surface of the gear, grooves are opened on all four sides of the top of the machine body, salt water is contained in the grooves to prevent gas leakage, the bottom of the cover is engaged with the top of the machine body through the groove, rotating rods are rotatably mounted at the four corners of the groove, and the rotating rods pass through the four corners of the cover;

[0007] The top and bottom of the rotating rod are provided with thread grooves, and a vertical groove is provided at the position of the thread groove on the top to communicate with the thread groove. The four corners of the cover are internally provided with protrusions located in the thread grooves to move the rotating rod. A storage rack is rotatably installed inside the body, and a plurality of storage grooves are distributed in an array on the surface of the storage rack. Fixed blocks are fixed on both sides of the storage rack, and a sleeve shaft is sleeved on one side of the fixed block. One end of the sleeve shaft passes through one side of the interior of the body through a connecting shaft, and the end of the connecting shaft is located in the thread groove on the surface of the rotating rod.

[0008] As a preferred technical solution of the present invention, a plurality of drainage grooves are opened in the groove on one side of the top of the body, and a closing block is embedded in each drainage groove. The closing block is in the shape of an I-beam, and the lower surface of the closing block is magnetically connected to the surface of the groove.

[0009] As a preferred technical solution of the present invention, two sliding rods are slidably provided in the groove, and the two sliding rods are respectively located on both sides of the closing block. Limiting blocks corresponding to the number of closing blocks are fixedly connected to the surface of the sliding rod, and the top of one side of the limiting block is a slope structure.

[0010] As a preferred technical solution of the present invention, the rotating rod rotates, and the end of the sliding rod is pushed by the lever to drive the sliding rod to move. The limit block moves with the sliding rod, and the limit block contacts the inner concave part of the I-shape of the closing block when moving.

[0011] As a preferred technical solution of the present invention, the inclined position of the limit block is rotatably connected to a rotating wheel, and a second drain pipe is obliquely surrounded inside the body, one side of the second drain pipe is connected to the leakage trough, and the other side of the second drain pipe is connected to the outlet pipe.

[0012] As a preferred technical solution of the present invention, a water trough for collecting water is fixed on one side of the interior of the body, the water outlet position of the outlet pipe is located inside the water trough, the bottom of the water trough is sloped, and the end of the water trough is connected to a first drain pipe.

[0013] As a preferred technical solution of the present invention, the end of the storage rack is connected to the water inlet pipe I through the water inlet pipe II, the top of the water inlet pipe I is connected to a water trough, and the end of the water inlet pipe I is sealed and plugged with a sealing cover.

[0014] As a preferred technical solution of the present invention, the diameter of the water inlet pipe I is larger than that of the water inlet pipe II, a filter plate for filtering is clamped on the inner wall at the end of the water inlet pipe I, the filter plate is in contact with the end of the water inlet pipe II, and a connecting rod II is fixed on the inner wall of the water inlet pipe II near the filter plate.

[0015] As a preferred technical solution of the present invention, a brush rod is fixed at the end of the connecting rod II, and the brush rod is in contact with the surface of the filter plate. A plurality of extrusion blocks are distributed circumferentially on the outer wall of the water inlet pipe II near the filter plate. A plurality of slots corresponding to the number of extrusion blocks are opened on the outer wall of the filter plate, and an insertion shaft is elastically connected to the position corresponding to the position of the slot on the inner wall of the water inlet pipe I.

[0016] As a preferred technical solution of the present invention, a transverse axis is fixed on the top of the plug shaft and its length protrudes beyond the extrusion block, a ball bearing is provided at the bottom of the plug shaft, a plurality of connecting rods I are distributed circumferentially at the edge of the filter plate, the end of the connecting rod I is clamped with the water inlet pipe I, and the end of the connecting rod I is sealed with the sealing cover through a rubber groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By driving one side of the storage rack to rise and tilt through the fixed block and the sleeve shaft, the salt water in the storage tank can be poured into the water storage tank, and then the water flow is discharged through the first drain pipe through the slope setting at the bottom of the water storage tank, so that all the acidified salt water can be discharged, avoiding damage caused by excessive acidified salt water concentration and contact with the skin when taking materials.

[0019] By setting a vertical groove connected to the threaded groove at the top of the rotating rod, since the height to which the cover rises is high and the spacing is large, and when the rotating rod rotates to the limit during the rising process, the protrusions at the four corners inside the cover are located in the vertical groove and move to stop the rotation of the rotating rod, thereby preventing the rotating rod from rotating with the cover as it continues to rise and affecting the mutual coordination between the structures. At the same time, the cover will not be affected when it is raised to a height at will.

[0020] The acidified brine is poured into the water tank and then flows into the storage tank through the water inlet pipe I and the water inlet pipe II. When the water flows through the filter plate, the salt crystal particles in the acidified brine can be filtered to avoid clogging the atomizing nozzle during atomization and affecting its atomization effect.

[0021] When the water inlet pipe II rotates with the end of the rack, the brush rod located on the surface of the filter plate is driven to rotate through the connecting rod II to scrape off the salt crystals filtered on the surface of the filter plate, so that the water flow smoothly enters the rack and is atomized through the atomizer, thereby ensuring the smoothness of the water flow when entering the atomizer and improving the atomization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 For the present invention Figure 1 Schematic diagram of the local internal structure;

[0024] Figure 3 For the present invention Figure 1 Internal schematic diagram of the ;

[0025] Figure 4 For the present invention Figure 2 The top view of the structure;

[0026] Figure 5 For the present invention Figure 4 A magnified view of the structure of A1 in the middle;

[0027] Figure 6 For the present invention Figure 2 Schematic diagram of the local structure;

[0028] Figure 7 For the present invention Figure 6 Structural schematic diagram of the middle water inlet pipe Ⅰ;

[0029] Figure 8 For the present invention Figure 7 Schematic diagram of the internal structure.

[0030] In the figure: 1, machine body; 2, machine cover; 3, fixing frame; 301, screw rod; 4, first drain pipe; 5, water filling tank; 501, sealing cover; 502, water inlet pipe I; 503, connecting rod I; 504, filter plate; 505, brush rod; 506, water inlet pipe II; 507, extrusion block; 508, plug shaft; 5081, transverse shaft; 7, second drain pipe; 701, water trough; 702, water outlet pipe; 8, rotating rod; 801, sliding rod; 802, closing block; 803, connecting shaft; 804, limiting block; 8041, rotating wheel; 805, lever; 9, storage rack; 901, storage tank; 902, fixing block; 903, sleeve shaft. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1-Figure 5 As shown, a simulation experimental device for the effect of ocean acidification on material corrosion includes a body 1 and motors fixed on both sides of the body 1, a fixing frame 3 is fixed on both sides of the body 1, a screw 301 is rotatably mounted on the surface of the fixing frame 3, the bottom of the screw 301 is located at the driving end of the motor, and the top of the body 1 is engaged with a cover 2;

[0033] Both sides of the cover 2 are connected to the surface of the screw rod 301 through side ears and are threadedly connected thereto. A gear is fixed on the top of the screw rod 301 and a transmission chain is sleeved on the surface of the gear. Grooves are provided on the four sides of the top of the body 1. Salt water is contained in the grooves to prevent gas leakage. The bottom of the cover 2 is engaged with the top of the body 1 through the grooves. Rotating rods 8 are rotatably installed at the four corners of the grooves. The rotating rods 8 pass through the four corners of the cover 2.

[0034] The top and bottom of the rotating rod 8 are provided with thread grooves, and a vertical groove is provided at the position of the thread groove on the top to communicate with it. The four corners of the cover 2 are located in the thread groove through the protrusions to move the rotating rod 8. A storage rack 9 is rotatably installed inside the body 1, and a plurality of storage grooves 901 are distributed in an array on the surface of the storage rack 9. Fixed blocks 902 are fixed on both sides of the storage rack 9. A sleeve shaft 903 is sleeved on one side of the fixed block 902. One end of the sleeve shaft 903 passes through the inner side of the body 1 through the connecting shaft 803, and the end of the connecting shaft 803 is located in the thread groove on the surface of the rotating rod 8.

[0035] A plurality of water leakage grooves are provided in the groove on one side of the top of the body 1, and a closing block 802 is embedded in each water leakage groove. The closing block 802 is in the shape of an I-beam, and the lower surface of the closing block 802 is magnetically connected to the surface of the groove; two sliding rods 801 are slidably provided in the groove, and the two sliding rods 801 are respectively located on both sides of the closing block 802, and a limit block 804 corresponding to the number of the closing blocks 802 is fixedly connected to the surface of the sliding rod 801, and the top of one side of the limit block 804 is a slope structure; the rotating rod 8 rotates, and the end of the sliding rod 801 is pushed by the lever 805, driving the sliding rod 801 to move, and the limit block 804 moves with the sliding rod 801, and the limit block 804 contacts the inner concave part of the I-shape of the closing block 802 when moving.

[0036] The inclined position of the limit block 804 is rotatably connected to a rotating wheel 8041, and a second drain pipe 7 is obliquely surrounded inside the body 1. One side of the second drain pipe 7 is connected to the leakage trough, and the other side of the second drain pipe 7 is connected to an outlet pipe 702; a water trough 701 for collecting water is fixed on one side of the interior of the body 1, and the water outlet position of the outlet pipe 702 is located inside the water trough 701. The bottom of the water trough 701 is set as a slope, and the end of the water trough 701 is connected to the first drain pipe 4.

[0037] When conducting an acidification simulation experiment on a material, firstly, the material is placed inside the storage tank 901, and then salt water is poured into the storage tank 901 through the water tank 5, and then an atomization experiment is performed on it through the internal atomizer, and the screw rod 301 is driven to rotate by the motor, and the cover 2 is lowered through the connecting ear so that the bottom of the cover 2 is engaged with the groove at the top of the body 1, and then salt water is poured into the groove at the top of the body 1 to seal it to prevent internal gas leakage, and when the cover 2 is lowered, the internal protrusion is located in the threaded groove at the top of the rotating rod 8 to move the rotating rod 8, and the rotating rod 8 rotates and drives the slide bar 801 to move in the groove through the lever 805, so that the inclined surface position of the limit block 804 is away from the I-shaped concave part of the closing block 802, so that the closing block 802 is embedded in the water leakage tank and is in magnetic contact with the groove surface, so that it can be closed to prevent the salt water inside the groove from leaking out and affecting the sealing effect;

[0038] When atomization is completed, the motor drives the screw rod 301 to rotate in the opposite direction to open the machine cover 2. At this time, the rotating rod 8 rotates in the opposite direction and drives the sliding rod 801 to move through the lever 805 so that the limit block 804 contacts the I-shaped inner concave part of the closing block 802, and the closing block 802 is lifted and separated from the water leakage groove, so that the salt water inside the groove flows out through the water leakage groove, and the salt water enters the second drain pipe 7 and flows into the water accumulation groove 701 through the outlet pipe 702 and then is discharged. The connecting shaft 803 is driven to rise through the threaded groove at the bottom of the rotating rod 8, and at the same time, one side of the storage rack 9 is driven to rise through the fixed block 902 and the sleeve shaft 903 to make it inclined, so that the salt water inside the storage groove 901 can be poured to The water is then discharged through the first drainage pipe 4 through the slope at the bottom of the water trough 701, so that all the acidified salt water can be discharged, and the skin can be prevented from being damaged by excessive acidified salt water concentration and contact with the skin when taking the materials; the vertical groove connected to the threaded groove at the top of the rotating rod 8 is set, because the height of the machine cover 2 rising is high and the spacing is large, and when the rotating rod 8 reaches the limit of rotation during the rising process, the protrusions at the four corners of the machine cover 2 are located in the vertical groove and move to stop the rotation of the rotating rod 8, so as to prevent the rotating rod 8 from rotating with the machine cover 2 when the machine cover 2 is continuously raised and affecting the mutual coordination between the structures, and at the same time, the machine cover 2 will not be affected when it is raised to a random height;

[0039] Example 2: Based on Example 1, as a specific implementation of the present invention, please refer to Figure 6-Figure 8 As shown, the end of the rack 9 is connected to the water inlet pipe I502 through the water inlet pipe II506, the top of the water inlet pipe I502 is connected to the water tank 5, and the end of the water inlet pipe I502 is sealed and plugged with a sealing cover 501; the diameter of the water inlet pipe I502 is greater than that of the water inlet pipe II506, and the inner wall of the end of the water inlet pipe I502 is clamped with a filter plate 504 for filtering, and the filter plate 504 is in contact with the end of the water inlet pipe II506. A connecting rod II is fixed to the inner wall of the water inlet pipe II506 near the filter plate 504; a brush rod 505 is fixed to the end of the connecting rod II, and the brush rod 505 is in contact with the surface of the filter plate 504. A plurality of extrusion blocks 507 are distributed circumferentially on the wall near the filter plate 504, a plurality of slots corresponding to the number of the extrusion blocks 507 are opened on the outer wall of the filter plate 504, and an insertion shaft 508 is elastically connected to the position corresponding to the position of the slots on the inner wall of the water inlet pipe Ⅰ502; a transverse shaft 5081 is fixed on the top of the insertion shaft 508 and the length protrudes from the extrusion block 507, a ball bearing is provided at the bottom of the insertion shaft 508, and a plurality of connecting rods Ⅰ503 are distributed circumferentially on the edge of the filter plate 504, the end of the connecting rod Ⅰ503 is clamped with the water inlet pipe Ⅰ502, and the end of the connecting rod Ⅰ503 is sealed and clamped with the sealing cover 501 through a rubber groove.

[0040] In the first embodiment, when the rack 9 is tilted, the water inlet pipe II 506 is driven to rotate inside the water inlet pipe I 502. The acidified salt water is poured into the water tank 5 and then flows into the storage tank 901 through the water inlet pipe I 502 and the water inlet pipe II 506. When the water flows through the filter plate 504, the salt crystal particles in the acidified salt water can be filtered to avoid clogging the atomizing nozzle during atomization and affecting its atomization effect. When the water inlet pipe II 506 rotates with the end of the rack 9, the brush rod 505 is driven by the connecting rod II to rotate on the surface of the filter plate 504, and the salt crystals filtered on the surface of the filter plate 504 are scraped off, so that the water flows smoothly into the rack 9 and is atomized by the atomizer. ization, ensuring the smoothness of water flow when entering the atomizer and improving the atomization effect; the rotation of the water inlet pipe II 506 makes the extrusion block 507 contact with the horizontal shaft 5081, pushing the horizontal shaft 5081 to move toward the inside of the water inlet pipe I 502, so that the plug shaft 508 is separated from the slot on the outer wall of the filter plate 504, and the filter plate 504 can be taken out through the sealing cover 501 to clean the salt crystals filtered on its surface, and the connecting rod I 503 is stuck on the end face of the water inlet pipe I 502. When the filter plate 504 is not disassembled, the extrusion block 507 contacts with the horizontal shaft 5081, which can prevent the filter plate 504 from loosening and deflecting and affecting the filtering effect.

[0041] It should be noted that, in this article, relational terms such as first and, second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present invention, the fill pattern is only for distinguishing layers, without any other limitation.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Experimental device for simulating the effects of ocean acidification on material corrosion, including: A machine body (1) and a motor fixed on both sides of the machine body (1), wherein fixing frames (3) are fixed on both sides of the machine body (1), a screw rod (301) is rotatably mounted on the surface of the fixing frame (3), the bottom of the screw rod (301) is located at the driving end of the motor, and the top of the machine body (1) is engaged with the cover (2); The invention is characterized in that: both sides of the machine cover (2) are arranged on the outside of the screw rod (301) through side ears, the side ears are meshed with the screw rod (301), a gear is fixed on the top of the screw rod (301) and a transmission chain is sleeved on the surface of the gear, grooves are opened on the four sides of the top of the machine body (1), salt water is contained in the grooves to prevent gas leakage, the bottom of the machine cover (2) is engaged with the top of the machine body (1) through the groove, and rotating rods (8) are rotatably installed at the four corners of the groove, and the rotating rods (8) pass through the four corners of the machine cover (2); The top and bottom of the rotating rod (8) are both provided with a thread groove, and a vertical groove is provided at the position of the thread groove at the top, and the vertical groove is connected to the thread groove. The four corners of the cover (2) are provided with protrusions located in the thread groove and moved to rotate the rotating rod (8). A storage rack (9) is rotatably installed inside the body (1), and a plurality of storage grooves (901) are distributed in an array on the surface of the storage rack (9). Fixed blocks (902) are fixed on both sides of the storage rack (9), and a sleeve shaft (903) is sleeved on one side of the fixed block (902). One end of the sleeve shaft (903) passes through one side of the inner side of the body (1) through a connecting shaft (803), and the end of the connecting shaft (803) is located in the thread groove on the surface of the rotating rod (8); A water collection tank (701) for collecting water is fixed on one side of the interior of the machine body (1); The fixed block (902) and the sleeve shaft (903) drive one side of the storage rack (9) to rise and tilt it, so that the salt water in the storage tank (901) can be poured into the water storage tank (701); A plurality of water leakage grooves are provided in the groove on one side of the top of the machine body (1), and a closing block (802) is embedded in each water leakage groove. The closing block (802) is in the shape of an I-beam, and the lower surface of the closing block (802) is magnetically connected to the surface of the groove; Two sliding rods (801) are slidably arranged in the groove, and the two sliding rods (801) are respectively located on both sides of the closing block (802), and the surface of the sliding rod (801) is fixedly connected with limit blocks (804) corresponding in number to the closing blocks (802), and the top of one side of the limit block (804) is an inclined structure; A lever (805) is fixedly connected to the rotating rod (8) near the groove. When the rotating rod (8) rotates, the lever (805) pushes the end of the sliding rod (801), driving the sliding rod (801) to move. The limit block (804) moves with the sliding rod (801). When moving, the limit block (804) contacts the inner concave portion of the I-shaped portion of the closing block (802).

2. The simulation experimental device for the effect of ocean acidification on material corrosion according to claim 1, characterized in that: The inclined surface of the limit block (804) is rotatably connected to a rotating wheel (8041), and a second drainage pipe (7) is obliquely surrounded inside the body (1), one side of the second drainage pipe (7) is connected to the drain trough, and the other side of the second drainage pipe (7) is connected to the water outlet pipe (702).

3. The simulation experimental device for the effect of ocean acidification on material corrosion according to claim 2 is characterized by: The water outlet position of the water outlet pipe (702) is located inside the water trough (701); the bottom of the water trough (701) is arranged in a slope; and the end of the water trough (701) is connected to a first drain pipe (4).

4. The simulation experimental device for the effect of ocean acidification on material corrosion according to claim 3 is characterized by: The end of the storage rack (9) is connected to the water inlet pipe I (502) via the water inlet pipe II (506), the top of the water inlet pipe I (502) is connected to the water trough (5), and the end of the water inlet pipe I (502) is sealed and plugged with a sealing cover (501).

5. The simulation experimental device for the effect of ocean acidification on material corrosion according to claim 4, characterized in that: The diameter of the water inlet pipe I (502) is greater than that of the water inlet pipe II (506); a filter plate (504) for filtering is clamped on the inner wall of the end of the water inlet pipe I (502); the filter plate (504) is in contact with the end of the water inlet pipe II (506); and a connecting rod II is fixed to the inner wall of the water inlet pipe II (506) near the filter plate (504).

6. The simulation experimental device for the effect of ocean acidification on material corrosion according to claim 5, characterized in that: A brush rod (505) is fixed to the end of the connecting rod II, and the brush rod (505) contacts the surface of the filter plate (504). A plurality of extrusion blocks (507) are distributed circumferentially on the outer wall of the water inlet pipe II (506) near the filter plate (504). A plurality of slots corresponding to the number of the extrusion blocks (507) are opened on the outer wall of the filter plate (504), and an insertion shaft (508) is elastically connected to a position corresponding to the position of the slot on the inner wall of the water inlet pipe I (502).

7. The simulation experimental device for the effect of ocean acidification on material corrosion according to claim 6, characterized in that: A transverse shaft (5081) is fixed on the top of the plug shaft (508) and its length protrudes beyond the extrusion block (507). A ball bearing is provided at the bottom of the plug shaft (508). A plurality of connecting rods I (503) are distributed circumferentially at the edge of the filter plate (504). The ends of the connecting rods I (503) are clamped with the water inlet pipe I (502). The ends of the connecting rods I (503) are sealed with the sealing cover (501) via a rubber groove.

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