Environment-friendly device for emulsified asphalt production

Abstract

The invention belongs to the technical field of asphalt production equipment, and particularly relates to an environment-friendly device for emulsified asphalt production, which comprises a device main body, an air inlet pipe is mounted on the side edge of the device main body, a water inlet pipe is mounted at the top of the device main body, and a rotatable mixing part is arranged in the device main body. The mixing part is used for mixing gas sprayed out of the gas inlet pipe and water sprayed out of the water inlet pipe and used for dust falling of impurities in the gas, and a partition plate is installed on the inner wall of the device body. According to the device, effective mixing of gas and water is achieved through the mixing part, the contact area of the gas and the water is increased through the ingenious design of the waterproof breathable plate and the collision plate, and the dust falling effect of impurities in the gas is further promoted. Meanwhile, due to the arrangement of the filtering part I and the filtering part II of the two-stage filtering system, impurities and moisture in the gas are further removed after the mixture is subjected to primary and secondary filtering, so that the purification efficiency of the gas is improved.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt production equipment, and in particular to an environmentally friendly device for producing emulsified asphalt. Background Art

[0002] In the process of emulsified asphalt production, traditional production equipment faces many environmental problems and technical challenges. First, the gas generated in the production process often contains a large amount of impurities and dust. If these pollutants are directly discharged into the atmosphere, they will cause serious pollution to the environment and affect the air quality and ecological balance. Therefore, how to efficiently reduce dust and purify gas has become a major problem in the production of emulsified asphalt. Secondly, the filtration system in the traditional device often lacks an effective automatic cleaning mechanism, which leads to a gradual decrease in the filtration effect over time, and even blockage, requiring frequent manual maintenance and cleaning. This not only increases the production cost, but also affects the production efficiency and product quality. Therefore, it is particularly important to develop an environmentally friendly device with automatic cleaning function. In addition, the traditional device has deficiencies in regulating the amount of water when the gas enters, and often cannot achieve intelligent regulation, resulting in waste of water resources and increased energy consumption. In today's increasingly tight resources and increasing environmental awareness, how to achieve the rational use of water resources and energy saving and consumption reduction has become another key issue in the production of emulsified asphalt. Finally, the structural design of the traditional device is often more complicated, and the connection and transmission between the parts are not compact enough, which makes maintenance and cleaning difficult. This not only increases the burden on the operator, but also reduces the service life and reliability of the device. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes an environmentally friendly device for producing emulsified asphalt, so as to more accurately solve the problems raised in the above background technology.

[0004] The present invention is achieved through the following technical solutions: The present invention proposes an environmentally friendly device for emulsified asphalt production, comprising a device body, an air inlet pipe is installed on the side of the device body, a water inlet pipe is installed on the top of the device body, a rotatable mixing part is arranged inside the device body, the mixing part is used for mixing the gas sprayed at the air inlet pipe and the water sprayed at the water inlet pipe, and is used for dust reduction of impurities in the gas, a partition is installed on the inner wall of the device body, the partition is arranged at the bottom of the mixing part and has holes on the top, a filter part 1 is installed on the inner wall of the device body at the bottom of the partition, the filter part 1 is used for preliminary filtration of the mixture after dust reduction, a filter part 2 is arranged at the bottom of the filter part 1, the filter part 2 is used for secondary filtration of the mixture after filtration in the filter part 1, and an adjustment part is installed on the top of the device body, the adjustment part is used for discharging water at the water inlet pipe when air is taken in at the air inlet pipe.

[0005] Preferably, the mixing section includes a rotating rod one which is installed on the main body of the device and can rotate, a waterproof breathable plate is installed on the surface of the rotating rod one, the end of the air inlet pipe is arranged between the two waterproof breathable plates, and is used to push the waterproof breathable plates after the gas enters, a collision plate is installed between the waterproof breathable plates, and water baffles are installed at the end faces of the waterproof breathable plates and the collision plates to block water and gas.

[0006] Preferably, the filter part includes a support plate installed on the inner wall of the device body, a material guide cylinder is installed on the support plate, a filter disc is installed on the top of the material guide cylinder, the filter disc is used for preliminary filtration of the mixture, and a clearing piece that can rotate after the gas enters is provided on the filter disc, and the clearing piece is used to clean the top of the filter disc.

[0007] Preferably, the clearing member includes a rotating rod three installed on the inner bottom wall of the material guide cylinder, a bevel gear one is installed on the end of the rotating rod three, a rotating rod four is rotatably connected to the inner wall of the device body, a bevel gear two is installed on the end of the rotating rod four, the bevel gear two and the bevel gear one are meshingly connected, the end of the rotating rod three passes through the top of the filter disc, and a push plate is installed on the surface of the rotating rod three, and the push plate is used for cleaning the filter disc.

[0008] Preferably, the second filter part includes a connecting plate installed on the inner wall of the device body, a second spring is installed at the bottom of the connecting plate, a mounting plate is installed at the bottom of the second spring, a filter plate is installed at the mounting plate, and the filter plate is used for secondary filtration of water and impurities.

[0009] Preferably, a beating part is installed on the top of the second filter part, and the beating part is used to beat the filter plate. A dredging part is provided at the bottom of the second filter part, and the dredging part is used to dredge the filter plate.

[0010] Preferably, the beating part comprises a second rotating rod installed on the inner wall of the device body, an eccentric wheel is installed on the second rotating rod, and the eccentric wheel is used to beat the filter plate.

[0011] Preferably, the dredging part includes a fixed plate installed on the inner wall of the device body and the fixed plate is arranged at the bottom of the filter plate. A needle plate is installed on the top of the fixed plate. The needle plate is used to dredge the filter plate when it moves downward. A water leakage port is opened on the top of the fixed plate for draining water.

[0012] Preferably, a belt is installed on the back of the device body, and the belt is used to drive the rotation of rotating rod one, rotating rod four and rotating rod two. An exhaust pipe and a drain pipe are installed on the side of the device body, and the exhaust pipe is used to discharge gas, and the drain pipe is used to discharge water.

[0013] Preferably, the regulating part includes an air storage tube installed on the surface of the air inlet pipe, an air guide tube is installed on the top of the air storage tube, a piston cylinder is installed on the top of the device body, the air guide tube is inserted into the piston cylinder, a piston plate is slidably connected to the inner wall of the piston cylinder, a U-shaped plate is installed on the top of the piston plate, a sliding cylinder is installed on the top of the water inlet pipe, a plug is provided in the sliding cylinder, a U-shaped plate is installed between the plug and the piston plate, a spring 1 is installed on the inner bottom wall of the piston cylinder, and the top of the spring 1 is connected to the piston plate.

[0014] Compared with the prior art, the present invention provides an environmentally friendly device for emulsified asphalt production, which has the following beneficial effects: This environmentally friendly device for emulsified asphalt production achieves effective mixing of gas and water through the mixing section. The clever design of the waterproof breathable plate and the collision plate not only increases the contact area between gas and water, but also promotes the dust reduction effect of impurities in the gas. At the same time, the setting of the first and second filter parts of the two-stage filtration system ensures that the impurities and moisture in the gas are further removed after the mixture is filtered initially and twice, thereby improving the gas purification efficiency.

[0015] This environmentally friendly device for emulsified asphalt production realizes the automatic cleaning function through mechanical transmission through the dredging parts and the flapping part in the device. The dredging parts effectively clean the impurities on the filter disc by rotating the rotating rod and the push plate to prevent clogging. The flapping part regularly flaps the filter plate through the rotation of the eccentric wheel to remove impurities and sediments on its surface, ensuring the continuous and efficient operation of the filtration system.

[0016] This environmentally friendly device for emulsified asphalt production realizes intelligent water regulation when gas enters through the design of the regulating part. The piston plate and the plug are driven by the change of air pressure to automatically close and open the water inlet pipe, thereby ensuring the proper discharge of water when gas enters. This intelligent regulation not only avoids the waste of water resources, but also improves the energy-saving performance of the device.

[0017] This environmentally friendly device for emulsified asphalt production realizes linkage through transmission devices such as belts, making the device more stable and reliable during operation. At the same time, the design of each part takes into account the needs of easy maintenance and cleaning. For example, the filter plate can be disassembled and replaced through spring 2, and the needle plate of the dredging part can also be adjusted and cleaned through the fixed plate. This design not only increases the service life of the device, but also reduces maintenance costs.

[0018] In summary, the environmentally friendly device for emulsified asphalt production has multiple beneficial effects such as efficient dust reduction and purification, automated cleaning and maintenance, intelligent adjustment and energy saving, compact structure and easy maintenance, providing strong support for environmental protection and energy saving in the emulsified asphalt production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an environmentally friendly device for producing emulsified asphalt proposed by the present invention; Figure 2 A cross-sectional view of the structure of an environmentally friendly device for emulsified asphalt production proposed by the present invention Figure 1 ; Figure 3 This is a schematic diagram of the structure of the regulating part of an environmentally friendly device for emulsified asphalt production proposed by the present invention; Figure 4 A cross-sectional view of the structure of an environmentally friendly device for emulsified asphalt production proposed by the present invention Figure 2 ; Figure 5 This is a schematic structural diagram of a filter part 1 of an environmentally friendly device for emulsified asphalt production proposed by the present invention; Figure 6 This is a schematic structural diagram of the mixing section of an environmentally friendly device for emulsified asphalt production proposed by the present invention.

[0020] In the figure: 1, device body; 11, partition; 12, belt member; 13, drain pipe; 14, exhaust pipe; 2, air inlet pipe; 3, water inlet pipe; 31, sliding cylinder; 4, mixing part; 41, rotating rod 1; 42, waterproof breathable plate; 43, collision plate; 44, water baffle; 5, slapping part; 51, rotating rod 2; 52, eccentric wheel; 6, filtering part 1; 61, support plate; 62, guide cylinder; 63, filter disc; 64, dredging member; 641, rotating rod 3; 642, bevel gear one; 643, push plate; 644, rotating rod four; 645, bevel gear two; 7, adjustment unit; 71, air storage tube; 72, piston cylinder; 73, air guide tube; 74, piston plate; 75, U-shaped plate; 76, plug; 77, spring one; 8, filter unit two; 81, connecting plate; 82, spring two; 83, mounting plate; 84, filter plate; 9, dredging unit; 91, fixing plate; 92, needle plate; 93, water leakage port. DETAILED DESCRIPTION

[0021] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings. Example

[0022] like Figure 1-Figure 6As shown, an environmentally friendly device for emulsified asphalt production proposed by one embodiment of the present invention is mainly composed of a device body 1. An air inlet pipe 2 is installed on the side of the device body 1 for introducing gas; and a water inlet pipe 3 is installed on the top for introducing water. A rotatable mixing section 4 is provided inside the device for mixing gas and water to achieve the purpose of dust reduction. A partition 11 is also provided on the inner wall of the device body 1, which is located at the bottom of the mixing section 4 and has holes to allow the mixture to pass through. A filter section 6 is provided below the partition 11 for preliminary filtration, and then a secondary filtration is performed through the filter section 8. An adjusting section 7 is provided on the top for adjusting the discharge of water during air intake, and the mixing section 4 is used to achieve dust reduction by mixing gas and water. The gas is purified by two-stage filtration of the filter section 1 6 and the filter section 2 8, and the adjusting section 7 ensures the proper discharge of water during air intake.

[0023] The mixing part 4 is composed of a rotatable rotating rod 41 installed on the device body 1, and the surface of the rotating rod 41 is covered with a waterproof breathable plate 42, and the end of the air inlet pipe 2 is located between the two waterproof breathable plates 42. A collision plate 43 is provided between the waterproof breathable plates 42, and a water baffle 44 is installed on the end faces of the waterproof breathable plates 42 and the collision plates 43. When the gas enters, the waterproof breathable plate 42 is pushed to rotate and collide with the collision plate 43. At the same time, the water baffle 44 prevents water from splashing out, effectively mixing the gas and water. The waterproof breathable plate 42 is a frame-shaped structure in which a waterproof breathable membrane is installed, so that when the gas flows, the water can be temporarily stored between the two waterproof breathable plates 42. When the gas enters from the air inlet pipe 2, it can collide with the water, thereby achieving the effect of dust reduction. At the same time, under the push of water and gas, the rotating rod 41 can be continuously rotated, so that the water and gas are thrown out, which is convenient for further dispersion of the water and gas.

[0024] The filter part 1 6 includes a support plate 61 installed on the inner wall of the device body 1, a guide cylinder 62 is installed on the support plate 61, and a filter disc 63 is arranged on the top of the guide cylinder 62. A dredging member 64 is installed on the filter disc 63, and the dredging member 64 is driven by a rotating rod 3 641 installed at the bottom of the guide cylinder 62, and rotates through the meshing connection of a bevel gear 1 642 and a bevel gear 2 645. The pusher plate 643 on the surface of the rotating rod 3 641 is used to clean the filter disc 63. The filter disc 63 realizes preliminary filtration, and the dredging member 64 automatically cleans the filter disc 63 through gear transmission to prevent clogging.

[0025] The dredging member 64 drives the push plate 643 to move on the filter disc 63 through the rotation of the rotating rod 3 641 to clean the accumulated impurities. The rotation of the rotating rod 3 641 is realized by the rotating rod 4 644 through the bevel gear transmission. It ensures the continuous cleaning of the filter disc 63 and improves the filtering efficiency.

[0026] The filter part 8 includes a connecting plate 81, a spring 82 is installed at the bottom of the connecting plate 81, the bottom of the spring 82 is connected to a mounting plate 83, a filter plate 84 is installed on the mounting plate 83, the filter plate 84 realizes secondary filtration, and the spring 82 provides a buffer to help clean and maintain the filter plate 84.

[0027] The top of the filter part 8 is provided with a beating part 5 for beating the filter plate 84, and the bottom is provided with a dredging part 9 for dredging the filter plate 84. The beating part 5 and the dredging part 9 work together to keep the filter plate 84 clean and unobstructed.

[0028] The beating part 5 is composed of a rotating rod 51 and an eccentric wheel 52 installed on the inner wall of the device body 1. The eccentric wheel 52 beats the filter plate 84 as the rotating rod 51 rotates. The rotation of the rotating rod 51 drives the rotation of the eccentric wheel 52, so that the eccentric wheel 52 continuously beats the filter plate 84, thereby effectively removing impurities on the filter plate 84.

[0029] The dredging part 9 includes a fixing plate 91, and a needle plate 92 is installed on the top of the fixing plate 91. The needle plate 92 is used to dredge the surface of the filter plate 84 when it moves down. The fixing plate 91 is also provided with a water leakage port 93 for drainage. The needle plate 92 is used to push the filter plate 84 when the filter plate 84 is blocked, so that water cannot flow downward from the filter plate 84, so as to push the filter plate 84, so that the filter plate 84 is pushed to the needle stop plate 92, and then the needle plate 92 is dredged to ensure that the filter plate 84 is not blocked by impurities, and the water leakage port 93 ensures the smooth discharge of water.

[0030] The back of the device body 1 is provided with a belt member 12 for driving the rotation of the first rotating rod 41, the fourth rotating rod 644 and the second rotating rod 51. The side is provided with an exhaust pipe 14 and a drain pipe 13 for exhausting gas and water respectively. The belt member 12 realizes power transmission, so that when the rotating rod 41 rotates under the action of gas and water force, the second rotating rod 51 and the fourth rotating rod 644 can be driven to rotate together, thereby facilitating the use of the slapping part 5 and the dredging member 64. The exhaust pipe 14 and the drain pipe 13 ensure the effective operation and discharge of the device.

[0031] The regulating part 7 includes an air storage tube 71 installed on the surface of the air inlet pipe 2, the top of the air storage tube 71 is connected to the air guide tube 73, and the air guide tube 73 is inserted into the piston cylinder 72. The piston cylinder 72 is slidably connected to the piston plate 74, and the top of the piston plate 74 is connected to the U-shaped plate 75. The top of the water inlet pipe 3 is equipped with a sliding cylinder 31, and the sliding cylinder 31 is provided with a plug 76. The plug 76 and the piston plate 74 are connected through the U-shaped plate 75. The bottom of the piston cylinder 72 is equipped with a spring 77, and the spring 77 is connected to the piston plate 74. When gas enters, the piston plate 74 and the plug 76 are driven by the change in air pressure to realize the automatic closing and opening of the water inlet pipe 3, ensuring the proper discharge of water when the gas enters. When in use, when hot air enters the air inlet pipe 2, the temperature at the air storage pipe 71 rises due to the high temperature, so that the gas in the air storage pipe 71, the piston cylinder 72 and the air guide pipe 73 changes from the original cold air to hot air with higher temperature, and then due to the thermal expansion and contraction, the piston plate 74 is pushed, which in turn drives the U-shaped plate 75 to be pulled, so that the plug 76 moves upward from the connection between the water inlet pipe and the sliding cylinder. At this time, water enters the device body 1 through the water inlet pipe 3, thereby achieving the effect of spraying water.

[0032] When the whole device is in use, when high-temperature exhaust gas enters the air inlet pipe 2, the water inlet pipe 3 is opened with it through the setting of the regulating part 7, and then water enters the mixing part 4 from the air inlet pipe 3. At this time, the water and gas effectively ensure the dust reduction effect due to the collision between each other, and at the same time, it can drive the rotation of the mixing part 4, so that when it rotates, it can drive the rotation of the beating part 5, so that the mixture of water and impurities after dust reduction can be effectively filtered, and then through the setting of the dredging member 64, when the beating part 5 is beating, the impurities on the filter disc 63 can be continuously scraped off to the top of the support plate 61, and the filtered water passes through the guide tube 62 It cooperates with the filter disc 63 and is discharged to the bottom of the support plate 61, and then plays a secondary filtering role through the filter unit 8. During the use of the filter unit 8, the setting of the connecting plate and the spring makes it possible for not only impurities but also water to fail to enter the bottom of the filter plate 84 when the filter plate 84 is blocked. As a result, the filter plate 84 is pushed after being blocked here, so that the filter plate 84 moves to the needle plate 92, and then the water is discharged to the bottom of the filter plate 84 after the needle plate 92 is unblocked, thereby ensuring the unblocking of the filter plate 84 and the continuous filtering effect.

[0033] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only an example and does not constitute a limitation of this specification. Although it is not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification. At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "one embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "one embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined. In addition, unless explicitly stated in the claims, the order of processing elements and sequences described in this specification, the use of alphanumeric characters, or the use of other names are not used to limit the order of the processes and methods of this specification.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An environmentally friendly device for producing emulsified asphalt, comprising a device body (1), characterized in that: An air inlet pipe (2) is installed on the side of the device body (1), a water inlet pipe (3) is installed on the top of the device body (1), a rotatable mixing section (4) is arranged inside the device body (1), the mixing section (4) is used for mixing the gas sprayed from the air inlet pipe (2) and the water sprayed from the water inlet pipe (3), and is used for dust reduction of impurities in the gas, and a partition (11) is installed on the inner wall of the device body (1), the partition (11) is arranged at the bottom of the mixing section (4) and has a hole on the top The inner wall of the device body (1) is provided with a filter part (6) at the bottom of the partition (11), and the filter part (6) is used for preliminary filtering of the mixture after dust settling. The bottom of the filter part (6) is provided with a filter part (8), and the filter part (8) is used for secondary filtering of the mixture after filtering at the filter part (6). The top of the device body (1) is provided with an adjustment part (7), and the adjustment part (7) is used for discharging water at the water inlet pipe (3) when air is taken in at the air inlet pipe (2).

2. An environmentally friendly device for producing emulsified asphalt according to claim 1, characterized in that: The mixing section (4) comprises a rotating rod (41) which is mounted on the device body (1) and is rotatable. A waterproof breathable plate (42) is mounted on the surface of the rotating rod (41). The end of the air inlet pipe (2) is arranged between the two waterproof breathable plates (42) for pushing the waterproof breathable plates (42) after gas enters. A collision plate (43) is mounted between the waterproof breathable plates (42). Water retaining plates (44) are mounted on the end surfaces of the waterproof breathable plates (42) and the collision plates (43) for blocking water and gas.

3. An environmentally friendly device for producing emulsified asphalt according to claim 1, characterized in that: The filtering part (6) comprises a support plate (61) mounted on the inner wall of the device body (1); a material guide cylinder (62) is mounted on the support plate (61); a filter disc (63) is mounted on the top of the material guide cylinder (62); the filter disc (63) is used for preliminary filtering of the mixture; a clearing member (64) is arranged on the filter disc (63) and can rotate as gas enters; the clearing member (64) is used for cleaning the top of the filter disc (63).

4. An environmentally friendly device for producing emulsified asphalt according to claim 3, characterized in that: The clearing member (64) includes a rotating rod three (641) installed on the inner bottom wall of the guide cylinder (62), and a bevel gear one (642) is installed on the end of the rotating rod three (641). A rotating rod four (644) is rotatably connected to the inner wall of the device body (1), and a bevel gear two (645) is installed on the end of the rotating rod four (644). The bevel gear two (645) and the bevel gear one (642) are meshingly connected. The end of the rotating rod three (641) passes through the top of the filter disc (63), and a push plate (643) is installed on the surface of the rotating rod three (641). The push plate (643) is used to clean the filter disc (63).

5. The environmentally friendly device for producing emulsified asphalt according to claim 1, characterized in that: The second filter part (8) comprises a connecting plate (81) mounted on the inner wall of the device body (1); a second spring (82) is mounted on the bottom of the connecting plate (81); a mounting plate (83) is mounted on the bottom of the second spring (82); a filter plate (84) is mounted on the mounting plate (83); the filter plate (84) is used for secondary filtering of water and impurities.

6. An environmentally friendly device for producing emulsified asphalt according to claim 5, characterized in that: A beating portion (5) is installed at the top of the second filter portion (8), and the beating portion (5) is used to beat the filter plate (84). A dredging portion (9) is provided at the bottom of the second filter portion (8), and the dredging portion (9) is used to dredge the filter plate (84).

7. An environmentally friendly device for producing emulsified asphalt according to claim 6, characterized in that: The beating portion (5) comprises a second rotating rod (51) mounted on the inner wall of the device body (1), an eccentric wheel (52) being mounted on the second rotating rod (51), and the eccentric wheel (52) is used to beat the filter plate (84).

8. The environmentally friendly device for producing emulsified asphalt according to claim 6, characterized in that: The dredging portion (9) comprises a fixing plate (91) mounted on the inner wall of the device body (1), and the fixing plate (91) is arranged at the bottom of the filter plate (84); a needle plate (92) is mounted on the top of the fixing plate (91), and the needle plate (92) is used to dredge the filter plate (84) when it moves downward; and a water leakage port (93) is provided on the top of the fixing plate (91) for draining water.

9. The environmentally friendly device for producing emulsified asphalt according to claim 1, characterized in that: A belt member (12) is installed on the back of the device body (1), and the belt member (12) is used to drive the rotation of the first rotating rod (41), the fourth rotating rod (644) and the second rotating rod (51). An exhaust pipe (14) and a drain pipe (13) are installed on the side of the device body (1), and the exhaust pipe (14) is used to discharge gas, and the drain pipe (13) is used to discharge water.

10. The environmentally friendly device for producing emulsified asphalt according to claim 1, characterized in that: The regulating part (7) comprises an air storage tube (71) mounted on the surface of the air inlet pipe (2), an air guide tube (73) being mounted on the top of the air storage tube (71), a piston cylinder (72) being mounted on the top of the device body (1), the air guide tube (73) being inserted into the piston cylinder (72), a piston plate (74) being slidably connected to the inner wall of the piston cylinder (72), a U-shaped plate (75) being mounted on the top of the piston plate (74), a sliding cylinder (31) being mounted on the top of the water inlet pipe (3), a plug (76) being arranged in the sliding cylinder (31), a U-shaped plate (75) being mounted between the plug (76) and the piston plate (74), a spring 1 (77) being mounted on the inner bottom wall of the piston cylinder (72), the top of the spring 1 (77) being connected to the piston plate (74).

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