Epoxy resin part pouring device capable of achieving even pouring

Abstract

The epoxy resin part pouring device comprises a supporting frame, the supporting frame is connected with a pouring piece, and the pouring piece comprises an injection molding machine installed on the upper side of the middle of the supporting frame; the pouring nozzle is mounted at the left discharging end of the injection molding machine and used for uniformly guiding out molten materials; the invention relates to the technical field of epoxy resin part production, in particular to an epoxy resin part pouring device capable of achieving uniform pouring, which comprises a supporting frame, a mold assembly and a pouring mold, the mold assembly is mounted on the supporting frame, the mold assembly comprises two first air cylinder assemblies arranged on the front side and the rear side of the supporting frame, and pouring molds are mounted at the extension ends of the two first air cylinder assemblies. And after epoxy resin pouring is completed, a water pump pumps an external water source through a water pumping pipe, water is guided into water passing grooves in two sets of ejector plates through a second three-way valve, a first bifurcated pipe and two sets of first guide pipes correspondingly, water absorbs heat of epoxy resin in two sets of pouring molds through heat exchange, and cooling forming of parts is promoted.

Description

Technical Field

[0001] The invention relates to the technical field of epoxy resin parts production, in particular to a uniformly cast epoxy resin parts casting device. Background Art

[0002] In the production process of epoxy resin parts, corresponding casting devices are required for casting production. Referring to the epoxy resin casting drilling template with reference to publication number CN208116851U, the drilling template includes a positioning pin, a clamping body, a limiting mechanism and a base. The clamping body and the base are connected by a limiting mechanism. The positioning pin is arranged in the cavity of the clamping body. The structure is simple, cost-saving and easy to operate. The epoxy resin ring formed after the liquid epoxy resin is poured and solidified can well fix the positioning pin, the drilling template, the clamping body and the product parts together, and can well ensure that the axis of the riveting hole of the new part is consistent with that of the original part. As described in the above patent, when the existing epoxy resin part casting device is used, after the casting is completed, most of the devices are difficult to promptly promote the molding of the molten epoxy resin material inside, and after the molding is completed, promptly promote the discharge of the material in the mold cavity and the attached residual material, which affects the discharge of the material and increases the subsequent cleaning steps, and the cleaning effect of the device on the residual material retained at the ejection end is poor, thereby affecting the subsequent casting production efficiency. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a casting device for epoxy resin parts with uniform casting, which solves the problems that after the casting of the device is completed, the removal effect of retained materials and attached residual materials in the casting mold is poor, the cleaning effect of the parts used to eject materials is poor, and the subsequent production quality is affected.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A uniformly cast epoxy resin component casting device, comprising a support frame, the support frame is connected with a casting piece for casting epoxy resin components, and the casting piece comprises:

[0005] Injection molding machine, installed on the upper middle side of the support frame, used for melting and exporting epoxy resin raw materials;

[0006] The pouring nozzle is installed at the discharge end on the left side of the injection molding machine to evenly discharge the molten material;

[0007] A mold assembly is installed on a support frame and is used to cooperate with an injection molding machine to provide a molding space for molten materials. The mold assembly includes two groups of first cylinder assemblies symmetrically arranged at the front and rear sides of the support frame relative to the discharge end of the injection molding machine. The extended ends of the two groups of first cylinder assemblies are both equipped with casting molds matching the casting nozzles. An ejector for guiding the retained materials in the mold cavity of the casting mold is installed on the support frame. A cleaning member for cleaning the materials attached to the ejector end of the ejector is arranged on the support frame. An exhaust member for treating casting waste gas is installed on the support frame.

[0008] The water supply part is installed on the support frame to supply water to the ejection parts and cleaning parts, accelerate the molding of epoxy resin parts and assist in cleaning.

[0009] Preferably, the two groups of casting molds are provided with docking grooves matching the casting nozzles, and positioning rods are installed on the upper side of the support frame and are slidably connected to the side surfaces of the two groups of casting molds respectively.

[0010] Preferably, the ejector member includes a sliding rod installed on a support frame and slidably connected to the middle part of the casting mold, the sliding rod is provided with an ejector plate that fits with the mold cavity near the inner side of the casting mold, the inner side of the sliding rod is respectively provided with a first conduit and a return pipe that are fixedly connected to the ejector plate, the first conduit is connected to a water supply member, and the ejector plate is provided with a water trough that is respectively connected to the first conduit and the return pipe and is used to cool the epoxy resin poured in the casting mold.

[0011] Preferably, the cleaning part includes a second cylinder assembly vertically mounted on a support frame, a movable plate is mounted on the top extended end of the second cylinder assembly, a suction plate for assisting the suction part in extracting waste gas is mounted in the middle of the movable plate, two groups of suction pipes connected to the suction part are arranged on the top of the suction plate, two groups of connecting rods are arranged on the front and rear sides of the bottom of the movable plate close to the casting mold side, a scraper block for cleaning retained residual material is mounted on the bottom of the connecting rod corresponding to the ejection end of the ejection part, and the scraper block is connected to the water supply part.

[0012] Preferably, a plurality of air extraction holes are provided at the bottom of the air extraction plate, the interior of the air extraction plate is hollow and connected to the air extraction pipe and the air extraction holes respectively, and a plurality of water spray holes are provided at the bottom of the scraper block, the interior of the scraper block is connected to the water spray holes.

[0013] Preferably, the vacuum component includes a vacuum pump installed on a support frame, and a first three-way valve for switching the vacuum direction is installed at the air outlet of the vacuum pump. A group of connecting pipes are installed on both sides of the first three-way valve, and filter tanks with built-in activated carbon nets for treating exhaust gas are installed on the front sides of the two groups of connecting pipes, and the front sides of the two groups of filter tanks are connected to the cleaning component.

[0014] Preferably, a gas concentration sensor is installed at the exhaust end of the vacuum pump, and flanges for disassembly are provided on the front and rear sides of the filter tank, and the cleaning piece and the connecting pipe are respectively connected to the two sets of flanges.

[0015] Preferably, the water supply component includes a water pump installed on a support frame, a second three-way valve for switching the water flow direction is provided at the discharge end of the water pump, a first bifurcated pipe connected to the ejection component and used for water supply and cooling is installed at the upper discharge end of the second three-way valve, a second bifurcated pipe connected to the cleaning component and used for assisting in cleaning the ejection component is installed at the rear side of the second three-way valve, and a water pumping pipe is provided at the water pumping end.

[0016] Beneficial Effects

[0017] The present invention provides a uniformly cast epoxy resin parts casting device. Compared with the prior art, it has the following beneficial effects:

[0018] (1) The uniformly cast epoxy resin parts casting device is provided with an ejector in the device. After the epoxy resin is cast, a water pump draws water from the outside through a water pump pipe. The water is introduced into the water troughs in the two ejector plates through a second three-way valve, a first bifurcated pipe, and two groups of first conduits. The water absorbs heat from the epoxy resin in the two casting molds through heat exchange, thereby promoting the cooling and molding of the parts. After the epoxy resin parts are formed, the casting mold is reset by the two groups of first cylinder assemblies, and the ejector plate slides relative to the mold cavity in the casting mold to achieve For the ejection of epoxy resin parts retained in the mold cavity, after the ejection plate is completely leaked out, the second cylinder assembly drives the movable plate, the exhaust plate, the two sets of connecting rods, and the scraper blocks to move vertically. When the two sets of scrapers pass through the ejection plate, they promote the falling off of impurities retained on the ejection plate by scraping. This setting has the function of cooling the molten material in the casting mold, and after the material is cooled, it is convenient for the material to be ejected and promotes the separation of the residual material retained in the casting mold, which is helpful for the subsequent production quality of parts and components, and reduces the impact on subsequent casting by cleaning the ejection plate.

[0019] (2) The pouring device for epoxy resin parts poured evenly has an exhaust component arranged in the device. During the pouring process, the exhaust pump exhausts air from the upper sides of the two groups of pouring molds through the first three-way valve, the connecting pipe, the filter tank, the exhaust pipe, and the exhaust plate, thereby extracting the exhaust gas from the pouring process. When the exhaust gas passes through the filter tank, the activated carbon net in the filter tank adsorbs the odor in the exhaust gas. When the activated carbon in the filter tank is saturated, the first three-way valve is reversed. At this time, the exhaust pump exhausts the exhaust gas through another group of filter tanks, which is convenient for users to replace the original filter tanks, thereby achieving uninterrupted treatment of the exhaust gas and reducing safety hazards.

[0020] (3) The epoxy resin component casting device for uniform casting has a water supply component arranged in the device. The water pump draws water from the outside through the water pump pipe, and then the water is supplied to the first conduit in the ejector component through the second three-way valve and the first bifurcated pipe respectively, so that the second three-way valve is reversed. At this time, the water is sprayed through the second bifurcated pipe and the water spray hole at the bottom of the scraper block, so as to spray and clean the residual material on the scraper block surface and the ejector plate surface, reduce the impurities retained on the scraper block surface, improve the cleaning efficiency of the ejector plate, and reduce the subsequent processing steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial cross-sectional enlarged view of the present invention;

[0022] Figure 2It is a partial cross-sectional enlarged view of the ejector of the present invention;

[0023] Figure 3 It is a partial cross-sectional enlarged view of the cleaning member of the present invention;

[0024] Figure 4 is an enlarged view of the air extraction member of the present invention;

[0025] Figure 5 It is a partial enlarged view of the water supply component of the present invention;

[0026] Figure 6 It is a stereogram of the present invention.

[0027] In the figure: 1. support frame; 2. injection molding machine; 3. casting nozzle; 4. mold assembly; 41. first cylinder assembly; 42. casting mold; 43. ejector; 431. slide rod; 432. ejector plate; 433. first conduit; 434. return pipe; 435. water trough; 44. cleaning member; 441. second cylinder assembly; 442. movable plate; 443. exhaust plate; 444. connecting rod; 445. scraper; 446. exhaust pipe; 45. exhaust member; 451. exhaust pump; 452. first three-way valve; 453. connecting pipe; 454. filter tank; 5. water supply member; 51. water pump; 52. second three-way valve; 53. first bifurcated pipe; 54. second bifurcated pipe; 55. water extraction pipe. DETAILED DESCRIPTION

[0028] 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.

[0029] refer to Figure 1-Figure 6 , the present invention provides the following three technical solutions:

[0030] The first embodiment: a uniformly cast epoxy resin parts casting device, comprising a support frame 1, the support frame 1 is connected with a casting part for casting epoxy resin parts, the casting part comprises: an injection molding machine 2, mounted on the upper middle side of the support frame 1 for melting and exporting epoxy resin raw materials; a casting nozzle 3, mounted on the left discharge end of the injection molding machine 2 for uniformly exporting the molten material; a mold assembly 4, mounted on the support frame 1 for cooperating with the injection molding machine 2 to provide a molding space for the molten material, the mold assembly 4 comprises two groups of first cylinder assemblies 41 symmetrically arranged at the front and rear sides of the support frame 1 relative to the discharge end of the injection molding machine 2, the two groups of first cylinder assemblies 41 are both equipped with a casting mold 42 matching the casting nozzle 3 at the extended ends, an ejector 43 for exporting the retained material in the mold cavity of the casting mold 42 is mounted on the support frame 1, a cleaning part 44 for cleaning the material attached to the ejector end of the ejector 43 is arranged on the support frame 1, and an exhaust part 45 for treating casting waste gas is mounted on the support frame 1;

[0031] The water supply part 5 is installed on the support frame 1 and is used to supply water to the ejector part 43 and the cleaning part 44 to accelerate the molding of epoxy resin parts and assist in cleaning; the two groups of casting molds 42 are both provided with docking grooves matching the casting nozzles 3, and the upper side of the support frame 1 is provided with positioning rods that are slidably connected to the sides of the two groups of casting molds 42 respectively; the ejector part 43 includes a sliding rod 431 installed on the support frame 1 and slidably connected to the middle part of the casting mold 42, and the sliding rod 431 is provided with an ejector plate 432 that fits the mold cavity near the inner side of the casting mold 42, and the inner side of the sliding rod 431 is respectively provided with a first conduit 433 and a return pipe 434 that are fixedly connected to the ejector plate 432, the first conduit 433 is connected to the water supply part 5, and the ejector plate 432 is provided with a water trough 435 that is connected to the first conduit 433 and the return pipe 434 respectively and is used to cool the epoxy resin poured in the casting mold 42;

[0032] The cleaning member 44 comprises a second cylinder assembly 441 vertically mounted on the support frame 1, a movable plate 442 is mounted on the top extended end of the second cylinder assembly 441, a suction plate 443 for assisting the suction member 45 in extracting waste gas is mounted in the middle of the movable plate 442, two groups of suction pipes 446 connected to the suction member 45 are arranged on the top of the suction plate 443, two groups of connecting rods 444 are arranged on the front and rear sides of the bottom of the movable plate 442 close to the casting mold 42, a scraper block 445 for cleaning the retained residual material is mounted on the bottom of the connecting rod 444 corresponding to the ejection end of the ejection member 43, and the scraper block 445 is connected to the water supply member 5; a plurality of suction holes are arranged on the bottom of the suction plate 443, the interior of the suction plate 443 is hollow and is respectively connected to the suction pipe 446 and the suction holes, a plurality of water spray holes are arranged on the bottom of the scraper block 445, and the interior of the scraper block 445 is connected to the water spray holes; when the epoxy resin is poured After the molding is completed, the water pump 51 draws water from the outside through the water pumping pipe 55, and the water is respectively introduced into the water troughs 435 in the two groups of ejector plates 432 through the second three-way valve 52, the first bifurcated pipe 53, and the two groups of first conduits 433. The water absorbs heat from the epoxy resin in the two groups of casting molds 42 through heat exchange, promoting the cooling and molding of the parts. After the epoxy resin parts are formed, the casting molds 42 are driven to reset by the two groups of first cylinder assemblies 41, and the ejector plate 432 slides relative to the mold cavity in the casting mold 42 to realize the ejection of the epoxy resin parts retained in the mold cavity. After the ejector plate 432 is completely leaked out, the movable plate 442, the exhaust plate 443, the two groups of connecting rods 444, and the scraper block 445 are driven to move vertically by the second cylinder assembly 441. When the two groups of scrapers 445 pass through the ejector plate 432, they promote the removal of impurities retained on the ejector plate 432 by scraping;

[0033] The second implementation mode is mainly different from the first implementation mode in that:

[0034] The air extraction member 45 comprises an air extraction pump 451 mounted on the support frame 1, a first three-way valve 452 for switching the air extraction direction is mounted on the air outlet end of the air extraction pump 451, a group of connecting pipes 453 are mounted on both sides of the first three-way valve 452, and a filter tank 454 with a built-in activated carbon net for treating exhaust gas is mounted on the front side of the two groups of connecting pipes 453, and the front sides of the two groups of filter tanks 454 are connected to the cleaning member 44;

[0035] A gas concentration sensor is installed at the exhaust end of the vacuum pump 451. The front and rear sides of the filter tank 454 are provided with flanges for disassembly. The cleaning piece 44 and the connecting pipe 453 are respectively connected to the two groups of flanges. During the pouring process, the vacuum pump 451 performs exhaust treatment on the upper sides of the two groups of pouring molds 42 through the first three-way valve 452, the connecting pipe 453, the filter tank 454, the exhaust pipe 446, and the exhaust plate 443 to extract the pouring waste gas. When the waste gas passes through the filter tank 454, the activated carbon net in the filter tank 454 adsorbs the odor in the waste gas. When the activated carbon in the filter tank 454 is saturated, the first three-way valve 452 is reversed. At this time, the vacuum pump 451 extracts the waste gas through another group of filter tanks 454, which is convenient for users to replace the original filter tanks 454.

[0036] The third implementation mode is mainly different from the second implementation mode in that:

[0037] The water supply component 5 includes a water pump 51 installed on the support frame 1, and a second three-way valve 52 for switching the water flow direction is provided at the drainage end of the water pump 51, and a first bifurcated pipe 53 connected to the ejection component 43 and used for water supply and cooling is installed at the upper drainage end of the second three-way valve 52, and a second bifurcated pipe 54 connected to the cleaning component 44 and used for auxiliary cleaning of the ejection component 43 is installed at the rear side of the second three-way valve 52, and the second bifurcated pipe 54 is respectively fixedly connected to the two groups of scrapers 445 and communicated with the water spray hole, and a water pumping pipe 55 is provided at the water pumping end of the water pump 51, and the first bifurcated pipe 53, the second bifurcated pipe 54, and the air pumping pipe 446 are all corrugated pipes;

[0038] The water pump 51 draws water from the outside through the water pumping pipe 55, and then the water is supplied to the first conduit 433 in the ejector 43 through the second three-way valve 52 and the first bifurcated pipe 53, respectively, so that the second three-way valve 52 is reversed. At this time, the water is sprayed through the second bifurcated pipe 54 and the water spray hole at the bottom of the scraper block 445, so as to realize the spray cleaning treatment of the residual material retained on the surface of the scraper block 445 and the surface of the ejector plate 432.

[0039] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0040] When in use, the user places a recycling box under the pouring nozzle 3 and the mold assembly 4, and drives the two groups of pouring molds 42 to close the molds on the outside of the pouring nozzle 3 through the two groups of first cylinder assemblies 41, and starts the injection molding machine 2 and the vacuum pump 451. The injection molding machine 2 melts the epoxy resin raw material inside and evenly introduces it into the mold cavity between the two groups of pouring molds 42 through the pouring nozzle 3 to achieve uniform pouring of epoxy resin parts. In this process, the vacuum pump 451 exhausts the upper sides of the two groups of pouring molds 42 through the first three-way valve 452, the connecting pipe 453, the filter tank 454, the vacuum pipe 446, and the vacuum plate 443 to extract the pouring waste gas. When the waste gas passes through the filter tank 454, the activated carbon net in the filter tank 454 adsorbs the odor in the waste gas.

[0041] After the epoxy resin is poured, the injection molding machine 2 is turned off and the water pump 51 is started. The water pump 51 draws water from the outside through the water pumping pipe 55, and then the water is respectively introduced into the water grooves 435 in the two groups of ejection plates 432 through the second three-way valve 52, the first bifurcated pipe 53, and the two groups of first conduits 433. Then the water flows back to the water source through the return pipe 434. The water flowing through the water grooves 435 absorbs heat through the ejection plate 432 to treat the epoxy resin in the two groups of casting molds 42 through heat exchange, and the epoxy resin parts are cooled and formed through heat exchange. After the epoxy resin parts are formed, the two groups of first air The cylinder assembly 41 drives the casting mold 42 to reset, and the ejector plate 432 slides relative to the mold cavity in the casting mold 42 to eject the epoxy resin parts trapped in the mold cavity. The ejected parts fall into the recovery box. After the ejector plate 432 is completely leaked out, the second cylinder assembly 441 drives the movable plate 442, the exhaust plate 443, the two groups of connecting rods 444, and the scraper block 445 to move vertically. When the two groups of scrapers 445 pass through the ejector plate 432, they promote the separation of impurities trapped on the ejector plate 432 by scraping. The injection molding machine 2 is a prior art, so its internal specific structure and working principle are not described in detail.

[0042] 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.

[0043] 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. A device for uniformly casting epoxy resin parts, comprising a support frame (1), characterized in that: The support frame (1) is connected to a casting piece for casting epoxy resin parts, and the casting piece includes: An injection molding machine (2) is installed on the upper middle side of the support frame (1) and is used for melting and exporting epoxy resin raw materials; A pouring nozzle (3) is installed at the left discharge end of the injection molding machine (2) to evenly discharge the molten material; A mold assembly (4) is mounted on the support frame (1) and is used to cooperate with the injection molding machine (2) to provide a molding space for the molten material. The mold assembly (4) includes two groups of first cylinder assemblies (41) symmetrically arranged on the front and rear sides of the support frame (1) relative to the discharge end of the injection molding machine (2). The extended ends of the two groups of first cylinder assemblies (41) are both equipped with a casting mold (42) matching the casting nozzle (3). The support frame (1) is equipped with an ejector (43) for discharging the retained material in the mold cavity of the casting mold (42). The support frame (1) is equipped with a cleaning member (44) for cleaning the material attached to the ejector end of the ejector (43). The support frame (1) is equipped with an exhaust member (45) for treating casting waste gas. A water supply component (5) is installed on the support frame (1) and is used to supply water to the ejection component (43) and the cleaning component (44), thereby accelerating the molding of epoxy resin parts and assisting in cleaning.

2. The uniformly cast epoxy resin parts casting device according to claim 1, characterized in that: The two groups of casting molds (42) are both provided with docking grooves matching the casting nozzles (3), and the upper side of the support frame (1) is provided with positioning rods which are respectively slidably connected to the sides of the two groups of casting molds (42).

3. The uniformly cast epoxy resin parts casting device according to claim 1, characterized in that: The ejector member (43) comprises a slide bar (431) mounted on the support frame (1) and slidably connected to the middle of the casting mold (42); an ejector plate (432) fitted with the mold cavity is mounted on the slide bar (431) near the inner side of the casting mold (42); a first conduit (433) and a return pipe (434) fixedly connected to the ejector plate (432) are mounted on the inner side of the slide bar (431); the first conduit (433) is connected to the water supply member (5); and a water trough (435) is arranged inside the ejector plate (432) and is connected to the inside of the first conduit (433) and the return pipe (434) and is used for cooling the epoxy resin poured in the casting mold (42).

4. The uniformly cast epoxy resin parts casting device according to claim 1, characterized in that: The cleaning member (44) comprises a second cylinder assembly (441) vertically mounted on the support frame (1); a movable plate (442) is mounted on the top extended end of the second cylinder assembly (441); a suction plate (443) for assisting the suction member (45) in extracting waste gas is mounted in the middle of the movable plate (442); two groups of suction pipes (446) connected to the suction member (45) are arranged on the top of the suction plate (443); two groups of connecting rods (444) are arranged on the front and rear sides of the bottom of the movable plate (442) close to the casting mold (42); a scraper block (445) for cleaning retained residual material is mounted on the bottom of the connecting rod (444) corresponding to the ejection end of the ejection member (43); and the scraper block (445) is connected to the water supply member (5).

5. The uniformly cast epoxy resin parts casting device according to claim 4, characterized in that: The bottom of the air extraction plate (443) is provided with a plurality of air extraction holes. The interior of the air extraction plate (443) is hollow and is respectively connected to the air extraction pipe (446) and the air extraction holes. The bottom of the scraper block (445) is provided with a plurality of water spray holes. The interior of the scraper block (445) is connected to the water spray holes.

6. The uniformly cast epoxy resin parts casting device according to claim 1, characterized in that: The suction component (45) comprises a suction pump (451) mounted on a support frame (1); a first three-way valve (452) for switching the suction direction is mounted on the air outlet of the suction pump (451); a group of connecting pipes (453) are mounted on both sides of the first three-way valve (452); a filter tank (454) with a built-in activated carbon net for treating waste gas is mounted on the front side of the two groups of connecting pipes (453); and the front sides of the two groups of filter tanks (454) are connected to the cleaning component (44).

7. The uniformly cast epoxy resin parts casting device according to claim 6, characterized in that: A gas concentration sensor is installed at the exhaust end of the vacuum pump (451), and flanges for disassembly are provided on the front and rear sides of the filter tank (454). The cleaning member (44) and the connecting pipe (453) are respectively connected to the two sets of flanges.

8. The uniformly cast epoxy resin parts casting device according to claim 1, characterized in that: The water supply component (5) comprises a water pump (51) mounted on the support frame (1); a second three-way valve (52) for switching the water flow direction is provided at the water discharge end of the water pump (51); a first bifurcated pipe (53) connected to the ejection component (43) and used for water supply and cooling is installed at the upper water discharge end of the second three-way valve (52); a second bifurcated pipe (54) connected to the cleaning component (44) and used for assisting in cleaning the ejection component (43) is installed at the rear side of the second three-way valve (52); and a water pumping pipe (55) is provided at the water suction end of the water pump (51).

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