Aluminum alloy round bar casting equipment

Abstract

The present invention belongs to the technical field of aluminum alloy casting, and specifically is an aluminum alloy round bar casting device, comprising a shell, a casting mold is arranged inside the shell, a plurality of forming holes for forming aluminum alloy round bars are opened at equal intervals inside the casting mold, a melting component is fixed inside the shell, and discharge components for automatically opening and closing the forming holes are arranged above and below the casting mold, a steering gear disc is fixed at the bottom end of the casting mold, a first motor is arranged on one side of the steering gear disc, an output gear is fixed at the end of the rotating shaft of the first motor, and the output gear is meshedly connected with the steering gear disc; the casting mold is driven to rotate by the first motor, so that the forming holes can be cast in sequence, and the material can be discharged while casting, which does not affect the work efficiency, and the inside of the forming hole can be heated by the heat conduction of the casting mold, so that the forming hole does not need to be preheated again, thereby reducing the power and time consumed in the operation.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum alloy casting, in particular to an aluminum alloy round bar casting device. Background Art

[0002] Aluminum alloy round bar is a kind of metal cylinder, which is used in many industries because of its high strength and relatively light weight. Aluminum alloy round bar is cast using casting equipment, which can melt the aluminum alloy raw material into molten aluminum and cast it inside the mold, and then cool it to form aluminum alloy round bar.

[0003] The prior art also proposes some solutions for aluminum alloy round bar casting. For example, a patent application with authorization announcement number CN112276028B discloses a high-speed aluminum alloy round bar casting device, which controls the flow rate of molten aluminum through a pressurizing mechanism, thereby improving the casting quality.

[0004] The above technical solution can form multiple aluminum alloy round bars at the same time when used, but the workers will take out the round bars after forming, which will cause a lot of time to be wasted. In the process of taking out the round bars, the heat of the mold will evaporate, resulting in the mold temperature failing to meet the casting requirements. The mold needs to be preheated again when used again, which is time-consuming.

[0005] To this end, the present invention provides an aluminum alloy round bar casting device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an aluminum alloy round rod casting device described in the present invention includes a shell, support plates are fixed on both sides of the bottom end of the shell, a casting mold is arranged inside the shell, a plurality of forming holes for forming aluminum alloy round rods are evenly spaced inside the casting mold, a melting component is fixed inside the shell, discharging components for automatically opening and closing the forming holes are arranged above and below the casting mold, a heating component for preheating the casting mold is arranged above the casting mold, a steering gear is fixed at the bottom end of the casting mold, a first motor is arranged on one side of the steering gear, an output gear is fixed at the end of the rotating shaft of the first motor, and the output gear is meshingly connected with the steering gear.

[0008] Preferably, the discharging assembly includes a cover plate arranged above and below the forming hole, a guide plate is arranged on one side of the cover plate, and the end of the guide plate close to the casting mold is fixedly connected to the casting mold, a telescopic rod is fixed to the side of the cover plate close to the guide plate, the telescopic rod passes through the interior of the guide plate, a return spring is arranged on the outside of the telescopic rod, one end of the return spring is fixedly connected to the cover plate, and the other end of the return spring is fixedly connected to the guide plate, and a small hole is opened in the upper cover plate.

[0009] Preferably, a sliding rod is fixed to one end of the cover plate away from the casting mold, and a guide frame is arranged above the forming hole. The guide frame is provided with three paths, which are respectively used to open the cover plate, maintain the position of the cover plate and close the cover plate.

[0010] Preferably, a blanking hole is provided at the bottom end of the shell, and the blanking hole is used to guide the aluminum alloy round rod discharged from the forming hole. A guide slide is provided at the bottom end of the shell, and the guide slide is used to guide the cover plate below.

[0011] Preferably, the heating assembly includes a preheating rod arranged inside the forming hole, an electric heating wire is fixed to the outside of the preheating rod, a support frame is arranged above the preheating rod, the bottom end of the support frame is fixedly connected to the shell, a threaded rod is rotatably connected inside the support frame, a lifting ring is threadedly connected to the outside of the threaded rod, a second motor is installed on the top of the support frame, and the end of the rotating shaft of the second motor is fixedly connected to the top of the threaded rod.

[0012] Preferably, a lifting block is fixed to the bottom end of the preheating rod, a cavity is provided inside the preheating rod and the lifting block, and the cavities inside the preheating rod and the lifting block are communicated, a fixed block is fixed to the outside of the lifting block, connecting plates are provided above and below the fixed block, a connecting column is fixed to one end of the connecting plate close to the fixed block, a coil spring is fixed to the outside of the connecting column, a groove is provided at the top and bottom ends of the fixed block, the outer side of the coil spring is fixedly connected to the groove of the fixed block, the connecting column is rotatably connected to the inside of the groove of the fixed block, a coating roller is rotatably connected between the connecting plates, a spray pipe is fixed between the connecting plates, the open end of the spray pipe is close to the outer side of the coating roller, the end of the spray pipe away from the coating roller is communicated with the internal cavity of the lifting block, and three groups of coating rollers are arranged at equal intervals outside the lifting block.

[0013] Preferably, a limiting ring is sleeved on the outside of the preheating rod, the inner diameter of the limiting ring is the same as the inner diameter of the forming hole, and one side of the limiting ring is fixedly connected to the guide frame.

[0014] Preferably, a screw rod is fixed to the top of the preheating rod, a steering hole is opened at the top of the shell, the screw rod passes through the inside of the steering hole, guide steel balls are fixed on both sides of the steering hole, and one end of the guide steel balls extends to the inside of the groove body outside the screw rod, and the top of the screw rod is rotatably connected to the lifting ring.

[0015] Preferably, a cavity is opened inside the screw rod, and the cavity of the screw rod is connected with the cavity of the preheating rod, a liquid extraction tube is inserted into the cavity of the screw rod, a one-way valve for discharging liquid is provided at the bottom end of the cavity of the screw rod, a one-way valve for introducing liquid is provided at the bottom end of the liquid extraction tube, and the top end of the liquid extraction tube is fixedly connected to the support frame.

[0016] Preferably, a liquid storage tank is provided on one side of the liquid extraction tube, the top end of the liquid extraction tube is connected to the liquid storage tank through a pipeline, and the bottom end of the liquid storage tank is fixedly connected to the top end of the shell.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The aluminum alloy round bar casting equipment described in the present invention drives the casting mold to rotate by the first motor, so that the forming holes can be cast in sequence, and the material can be discharged while casting, which does not affect the work efficiency. The inside of the forming hole can be heated by the heat conduction of the casting mold, and there is no need to preheat the forming hole again, thereby reducing the power and time consumed in the operation.

[0019] 2. The aluminum alloy round rod casting equipment described in the present invention can make the inside of the forming hole easier to demold by coating the release agent on the inside of the forming hole through a coating roller, and can rotate the screw rod during the lifting process by limiting the screw rod with a guide steel ball, and can cooperate with the liquid extraction tube to extract the release agent inside the liquid extraction tube during the lifting process of the screw rod, so as to achieve quantitative coating of the inside of the forming hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the housing in the present invention;

[0024] Figure 4 It is a schematic diagram of the casting mold structure in the present invention;

[0025] Figure 5 It is a schematic diagram of the bottom surface structure of the casting mold in the present invention;

[0026] Figure 6 It is a schematic diagram of the cover plate structure in the present invention;

[0027] Figure 7 It is a schematic diagram of the telescopic rod structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the coating roller structure in the present invention;

[0029] Fig. 9 It is a schematic diagram of the internal structure of the screw rod in the present invention.

[0030] In the figure: 1. shell; 11. steering hole; 12. blanking hole; 13. guide slide; 2. casting mold; 21. cover plate; 211. telescopic rod; 212. return spring; 213. guide plate; 214. slide rod; 22. guide frame; 23. forming hole; 24. steering gear disc; 25. first motor; 251. output gear; 3. melting assembly; 4. support plate; 5. preheating rod; 51. heating wire; 52. lifting block; 521. fixing block; 522. coating roller; 523. connecting plate; 524. spray pipe; 525. connecting column; 526. coil spring; 53. limit ring; 54. screw rod; 541. guide steel ball; 55. extraction pipe; 551. liquid storage tank; 56. support frame; 561. threaded rod; 562. lifting ring; 563. second motor. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figures 1 to 4 As shown, an aluminum alloy round rod casting device according to an embodiment of the present invention comprises a shell 1, support plates 4 are fixed on both sides of the bottom end of the shell 1, a casting mold 2 is arranged inside the shell 1, a plurality of forming holes 23 for forming aluminum alloy round rods are opened at equal intervals inside the casting mold 2, a melting component 3 is fixed inside the shell 1, a discharge component for automatically opening and closing the forming holes 23 is arranged above and below the casting mold 2, a heating component for preheating the casting mold 2 is arranged above the casting mold 2, a steering gear disc 24 is fixed at the bottom end of the casting mold 2, a first motor 25 is arranged on one side of the steering gear disc 24, an output gear 251 is fixed to the end of the rotating shaft of the first motor 25, and the output gear 251 is meshedly connected with the steering gear disc 24;

[0033] When in use, the aluminum alloy raw material needs to be cast into aluminum alloy round bars, and the raw material for aluminum alloy casting is placed into the melting component 3, and the raw material is melted into aluminum water by heating the melting component 3. The heating component is used to extend into the interior of the forming hole 23 for preheating, and then the top of the forming hole 23 is opened by the discharge component. At this time, the aluminum water is poured into the interior of the forming hole 23 through the melting component 3. At this time, the casting mold 2 transfers the heat of the aluminum water inside the forming hole 23 to other forming holes 23. At this time, the subsequent forming holes 23 do not need to be preheated, which can save a lot of time. After the casting inside the forming hole 23 is completed, the first motor 25 is started to rotate and drive the steering gear disc 24 through the output gear 251. The steering gear disc 24 drives the casting mold 2 to rotate and switch other forming holes 23 to the bottom of the melting component 3. Repeating this operation can achieve multi-station casting.

[0034] like Figures 4 to 6 As shown, the discharge assembly includes a cover plate 21 arranged above and below the forming hole 23, a guide plate 213 is arranged on one side of the cover plate 21, and one end of the guide plate 213 close to the casting mold 2 is fixedly connected to the casting mold 2, a telescopic rod 211 is fixed on one side of the cover plate 21 close to the guide plate 213, the telescopic rod 211 runs through the inside of the guide plate 213, a return spring 212 is arranged outside the telescopic rod 211, one end of the return spring 212 is fixedly connected to the cover plate 21, and the other end of the return spring 212 is fixedly connected to the guide plate 213, and a small hole is opened inside the upper cover plate 21;

[0035] During the casting process, the cover plate 21 can seal the top and bottom of the forming hole 23 , so that molten aluminum can be formed inside the forming hole 23 .

[0036] like Figures 4 to 6 As shown, a slide bar 214 is fixed to one end of the cover plate 21 away from the casting mold 2, and a guide frame 22 is arranged above the forming hole 23. The guide frame 22 is provided with three sections of paths, which are respectively used to open the cover plate 21, maintain the position of the cover plate 21 and close the cover plate 21;

[0037] During the preheating and casting process inside the forming hole 23, the top of the forming hole 23 needs to remain in an open state. At this time, the casting mold 2 rotates to drive the slide bar 214 at one end of the cover plate 21 to contact the guide frame 22. The first section of the guide frame 22 will guide the slide bar 214, so that the slide bar 214 can drive the cover plate 21 to move in the direction away from the forming hole 23. At the same time, the return spring 212 is squeezed, and then preheating can be carried out. After preheating, the slide bar 214 will pass through the second section of the path. The second section of the path can limit the slide bar 214 so that the cover plate 21 in this path remains separated from the forming hole 23. Then the forming hole 23 moves to the bottom of the molten component 3 for casting. After the casting is completed, the slide bar 214 passes through the third section of the path. The third section of the path is opposite to the first section of the path. While the third section of the path limits the slide bar 214, the elastic force of the return spring 212 pushes the cover plate 21. After passing through the third section of the path, the cover plate 21 is re-covered in the forming hole 23.

[0038] like Figures 3 to 6 As shown, a blanking hole 12 is provided at the bottom end of the shell 1, and the blanking hole 12 is used to guide the aluminum alloy round rod discharged from the forming hole 23. A guide slide 13 is provided at the bottom end of the shell 1, and the guide slide 13 is used to guide the cover plate 21 below.

[0039] The slide bar 214 of the bottom cover plate 21 always slides inside the guide slide 13. When the slide bar 214 moves through the blanking hole 12, the path of the guide slide 13 will drive the cover plate 21 to move away from the bottom end of the forming hole 23. At this time, the aluminum alloy round rod inside the forming hole 23 falls off from the forming hole 23 and slides out of the blanking hole 12 to the outside, thereby realizing automatic discharging.

[0040] like Figures 7 to 9 As shown, the heating assembly includes a preheating rod 5 arranged inside the forming hole 23, an electric heating wire 51 is fixed to the outside of the preheating rod 5, a support frame 56 is arranged above the preheating rod 5, the bottom end of the support frame 56 is fixedly connected to the housing 1, a threaded rod 561 is rotatably connected inside the support frame 56, a lifting ring 562 is threadedly connected to the outside of the threaded rod 561, a second motor 563 is installed at the top of the support frame 56, and the end of the rotating shaft of the second motor 563 is fixedly connected to the top of the threaded rod 561;

[0041] Before casting, the interior of the forming hole 23 needs to be preheated. At this time, the second motor 563 is started to drive the threaded rod 561 to rotate, and the threaded rod 561 drives the lifting ring 562 to move downward. The lifting ring 562 drives the preheating rod 5 to move downward, and the preheating rod 5 extends into the interior of the forming hole 23. At this time, the heating wire 51 can heat the interior of the forming hole 23 to achieve preheating of the forming hole 23.

[0042] like Figures 7 and 8As shown, a lifting block 52 is fixed to the bottom end of the preheating rod 5, and cavities are provided inside the preheating rod 5 and the lifting block 52, and the cavities inside the preheating rod 5 and the lifting block 52 are connected. A fixed block 521 is fixed to the outside of the lifting block 52, and connecting plates 523 are provided above and below the fixing block 521. A connecting column 525 is fixed to one end of the connecting plate 523 close to the fixing block 521, and a coil spring 526 is fixed to the outside of the connecting column 525. A groove is provided at the top and bottom of the fixing block 521. The outer side of the coil spring 526 is fixedly connected to the groove body of the fixed block 521, the connecting column 525 is rotatably connected to the inside of the groove body of the fixed block 521, the coating roller 522 is rotatably connected between the connecting plates 523, and a liquid spraying pipe 524 is fixed between the connecting plates 523, the open end of the liquid spraying pipe 524 is close to the outer side of the coating roller 522, and the end of the liquid spraying pipe 524 away from the coating roller 522 is connected to the internal cavity of the lifting block 52, and three groups of coating rollers 522 are arranged at equal intervals outside the lifting block 52;

[0043] When the aluminum alloy round rod inside the forming hole 23 is demolded, it may not fall off. It is necessary to apply a demolding agent to the inner wall of the forming hole 23. The demolding agent can be transported to the spray pipe 524 through the cavity inside the preheating rod 5 and the lifting block 52. The spray pipe 524 sprays the demolding agent on the surface of the coating roller 522. The coating roller 522 can apply the demolding agent on the inner wall of the forming hole 23. The elastic force of the coil spring 526 can drive the connecting plate 523 to flip, and the connecting plate 523 drives the coating roller 522 to fit tightly against the surface of the forming hole 23.

[0044] like Figures 7 and 8 As shown, a limiting ring 53 is sleeved on the outside of the preheating rod 5, the inner diameter of the limiting ring 53 is the same as the inner diameter of the forming hole 23, and one side of the limiting ring 53 is fixedly connected to the guide frame 22;

[0045] When the lifting ring 562 is lifted, the preheating rod 5 will be lifted as well. At this time, the preheating rod 5 will lift the lifting block 52. The lifting block 52 moves and separates from the forming hole 23 and enters the interior of the limiting ring 53. At this time, the limiting ring 53 can limit the outside of the coating roller 522 to prevent it from opening and being unable to enter the interior of the forming hole 23.

[0046] like Figure 3 , Figure 7 and Figure 8 As shown, a screw rod 54 is fixed at the top of the preheating rod 5, a steering hole 11 is opened at the top of the shell 1, the screw rod 54 passes through the inside of the steering hole 11, and guide steel balls 541 are fixed on both sides of the steering hole 11, and one end of the guide steel ball 541 extends to the inside of the groove outside the screw rod 54, and the top of the screw rod 54 is rotatably connected to the lifting ring 562;

[0047] As the lifting ring 562 moves, it drives the screw rod 54 to move. At this time, the guide steel ball 541 inside the steering hole 11 slides inside the groove body outside the screw rod 54. The groove body path outside the screw rod 54 allows the screw rod 54 to rotate during the movement. The rotation of the screw rod 54 allows the coating roller 522 to evenly apply the release agent to the inner wall of the forming hole 23.

[0048] like Figures 7 to 9 As shown, a cavity is provided inside the screw rod 54, and the cavity of the screw rod 54 is connected with the cavity of the preheating rod 5, a liquid extraction tube 55 is inserted inside the cavity of the screw rod 54, a one-way valve for discharging liquid is provided at the bottom end of the cavity of the screw rod 54, a one-way valve for inletting liquid is provided at the bottom end of the liquid extraction tube 55, and the top end of the liquid extraction tube 55 is fixedly connected to the support frame 56;

[0049] When the screw rod 54 descends, the one-way valve inside the liquid extraction tube 55 opens, and the one-way valve inside the screw rod 54 closes. At this time, the mold release agent is drawn into the screw rod 54. Then, when the screw rod 54 rises, the one-way valve inside the screw rod 54 opens, and the one-way valve inside the liquid extraction tube 55 closes. At this time, the mold release agent inside the screw rod 54 is transported to the liquid injection tube 524 through the cavity of the preheating rod 5 and the lifting block 52. In this way, automatic material extraction can be achieved by reciprocating, so that the amount of mold release agent sprayed out by the liquid injection tube 524 each time can be the same.

[0050] like Figures 7 to 9 As shown, a liquid storage tank 551 is provided on one side of the liquid extraction tube 55, the top end of the liquid extraction tube 55 is connected to the liquid storage tank 551 through a pipeline, and the bottom end of the liquid storage tank 551 is fixedly connected to the top end of the housing 1;

[0051] The liquid storage tank 551 stores the release agent inside, and the liquid extraction pipe 55 extracts the material from the inside of the liquid storage tank 551 .

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An aluminum alloy round bar casting equipment, characterized in that: The invention comprises a shell (1), support plates (4) are fixed on both sides of the bottom of the shell (1), a casting mold (2) is arranged inside the shell (1), a plurality of molding holes (23) for molding aluminum alloy round bars are opened at equal intervals inside the casting mold (2), a melting component (3) is fixed inside the shell (1), discharge components for automatically opening and closing the molding holes (23) are arranged above and below the casting mold (2), a heating component for preheating the casting mold (2) is arranged above the casting mold (2), a steering gear disc (24) is fixed at the bottom of the casting mold (2), a first motor (25) is arranged on one side of the steering gear disc (24), an output gear (251) is fixed at the end of the rotating shaft of the first motor (25), and the output gear (251) is meshingly connected with the steering gear disc (24); The heating assembly comprises a preheating rod (5) arranged inside the forming hole (23), an electric heating wire (51) is fixed to the outside of the preheating rod (5), a support frame (56) is arranged above the preheating rod (5), the bottom end of the support frame (56) is fixedly connected to the shell (1), a threaded rod (561) is rotatably connected inside the support frame (56), a lifting ring (562) is threadedly connected to the outside of the threaded rod (561), a second motor (563) is installed at the top of the support frame (56), and the end of the rotating shaft of the second motor (563) is fixedly connected to the top of the threaded rod (561); A lifting block (52) is fixed to the bottom end of the preheating rod (5), and cavities are provided inside the preheating rod (5) and the lifting block (52), and the cavities inside the preheating rod (5) and the lifting block (52) are connected. A fixing block (521) is fixed to the outside of the lifting block (52), and connecting plates (523) are provided above and below the fixing block (521). A connecting column (525) is fixed to one end of the connecting plate (523) close to the fixing block (521), and a coil spring (526) is fixed to the outside of the connecting column (525). A groove is provided at the top and bottom of the fixing block (521). The outer side of the coil spring (526) is fixedly connected to the groove body of the fixed block (521), the connecting column (525) is rotatably connected to the inside of the groove body of the fixed block (521), a coating roller (522) is rotatably connected between the connecting plates (523), a liquid spraying pipe (524) is fixed between the connecting plates (523), an open end of the liquid spraying pipe (524) is close to the outer side of the coating roller (522), and an end of the liquid spraying pipe (524) away from the coating roller (522) is connected to the internal cavity of the lifting block (52), and three groups of coating rollers (522) are arranged at equal intervals outside the lifting block (52); A screw rod (54) is fixed at the top end of the preheating rod (5), a steering hole (11) is opened at the top end of the shell (1), the screw rod (54) passes through the inside of the steering hole (11), guide steel balls (541) are fixed on both sides of the inside of the steering hole (11), and one end of the guide steel ball (541) extends to the inside of the groove body outside the screw rod (54), and the top end of the screw rod (54) is rotatably connected to the lifting ring (562); A cavity is provided inside the screw rod (54), and the cavity of the screw rod (54) is in communication with the cavity of the preheating rod (5). A liquid extraction tube (55) is inserted into the cavity of the screw rod (54). A one-way valve for discharging liquid is provided at the bottom end of the cavity of the screw rod (54). A one-way valve for inletting liquid is provided at the bottom end of the liquid extraction tube (55). The top end of the liquid extraction tube (55) is fixedly connected to a support frame (56).

2. The aluminum alloy round bar casting equipment according to claim 1, characterized in that: The discharge assembly comprises a cover plate (21) arranged above and below the forming hole (23); a guide plate (213) is arranged on one side of the cover plate (21); an end of the guide plate (213) close to the casting mold (2) is fixedly connected to the casting mold (2); a telescopic rod (211) is fixed on one side of the cover plate (21) close to the guide plate (213); the telescopic rod (211) passes through the inside of the guide plate (213); a return spring (212) is arranged outside the telescopic rod (211); one end of the return spring (212) is fixedly connected to the cover plate (21), and the other end of the return spring (212) is fixedly connected to the guide plate (213); a small hole is opened inside the upper cover plate (21).

3. The aluminum alloy round bar casting equipment according to claim 2, characterized in that: A sliding rod (214) is fixed to one end of the cover plate (21) away from the casting mold (2), and a guide frame (22) is arranged above the molding hole (23). The guide frame (22) is provided with three sections of paths, which are respectively used to open the cover plate (21), maintain the position of the cover plate (21), and close the cover plate (21).

4. The aluminum alloy round bar casting equipment according to claim 3, characterized in that: A blanking hole (12) is provided at the bottom end of the shell (1), and the blanking hole (12) is used to guide the aluminum alloy round rod discharged from the forming hole (23). A guide slideway (13) is provided at the bottom end of the shell (1), and the guide slideway (13) is used to guide the cover plate (21) below.

5. The aluminum alloy round bar casting equipment according to claim 1, characterized in that: The outer sleeve of the preheating rod (5) is provided with a limiting ring (53), the inner diameter of the limiting ring (53) is the same as the inner diameter of the forming hole (23), and one side of the limiting ring (53) is fixedly connected to the guide frame (22).

6. The aluminum alloy round bar casting equipment according to claim 1, characterized in that: A liquid storage tank (551) is provided on one side of the liquid extraction tube (55); the top end of the liquid extraction tube (55) is connected to the liquid storage tank (551) via a pipeline; and the bottom end of the liquid storage tank (551) is fixedly connected to the top end of the housing (1).

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