A numerical control cutting device for a conical roller of a ring rolling mill after wear welding

Abstract

The present invention relates to the technical field of cutting devices, and particularly to a numerical control cutting device for a conical roller of a ring rolling machine after wear welding, including a machine base. A pair of fixed seats and a cutting partition frame are installed at the upper end of the machine base. A cutting assembly is arranged inside the cutting partition frame. A positioning assembly is installed at the upper end of the fixed seat. The positioning assembly includes guide rods, sliders, arc-shaped plates, lead screws and clamping blocks. A plurality of guide rods are installed inside the fixed seat. A pair of sliders are slidably connected to the circumferential surfaces of the guide rods. The arc-shaped plates are rotatably connected inside the sliders. A plurality of lead screws are rotatably connected inside the arc-shaped plates. The clamping blocks are rotatably connected to the circumferential surfaces of the lead screws. A conical roller body is clamped between the clamping blocks. A rotating mechanism is arranged inside the fixed seat. Through the action of the positioning assembly, the present invention realizes the effect of simultaneously processing two conical roller bodies, improves the processing efficiency of the conical roller body, and discharges cutting iron filings in real time to avoid affecting the quality of the recycling of cutting fluid.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting devices, and more particularly to a numerically controlled cutting device for a conical roller of a ring rolling mill after wear welding. Background Art

[0002] A ring rolling mill is a device used to perform the metal ring rolling forming process, a forging device for plastic processing of thick-walled and thin-walled rings and cylindrical parts. When the ring rolling mill is working, a pair of conical rollers among them are vulnerable to wear. Therefore, after the conical rollers are used for a period of time, they need to be repaired. Generally, a layer of surfacing is welded on the outer circle of the conical rollers with a welding rod, and then the surfacing layer is cut flat with a lathe.

[0003] Deficiencies of the prior art: However, most of the existing lathes can only perform fixed cutting on a single conical roller. Generally, a group of conical rollers need to be subjected to two separate cutting operations, which not only makes the operation steps cumbersome but also affects the cutting efficiency of the conical rollers. For this reason, we have proposed a numerically controlled cutting device for a conical roller of a ring rolling mill after wear welding. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a numerically controlled cutting device for a conical roller of a ring rolling mill after wear welding to solve the problems existing in the above background art.

[0005] The present invention provides the following technical solution: A numerically controlled cutting device for a conical roller of a ring rolling mill after wear welding, including a machine base, a pair of fixed seats and a cutting partition frame are installed at the upper end of the machine base, a cutting assembly is arranged inside the cutting partition frame, a positioning assembly is installed at the upper end of the fixed seat, the positioning assembly includes a guide rod, a slider, an arc plate, a lead screw and a clamping block, a plurality of the guide rods are installed inside the fixed seat, a pair of the sliders are slidably connected to the circumferential surface of the guide rod, the arc plate is rotatably connected inside the slider, a plurality of the lead screws are rotatably connected inside the arc plate, the clamping block is rotatably connected to the circumferential surface of the lead screw, and a conical roller body is clamped between the clamping blocks; a rotating mechanism is arranged inside the fixed seat, the rotating mechanism includes a rotating motor, a gear and a semi-toothed ring, the rotating motor is installed inside the slider, a driving shaft is installed at the output end of the rotating motor, the gear is installed on the circumferential surface of the driving shaft, and the semi-toothed ring is installed on the circumferential surface of the arc plate and meshes with the gear;

[0006] Preferably, a bidirectional threaded rod is rotatably connected inside the fixed seat, the slider is threadedly connected to the bidirectional threaded rod, and the bidirectional threaded rod is connected to the output end of a driving motor installed on the surface of the fixed seat.

[0007] Preferably, a telescopic guide tube and a hydraulic cylinder are installed at the upper end of the fixed seat, a support seat is installed at the upper end of the telescopic guide tube and the upper end of the output end of the hydraulic cylinder, a support roller is rotatably connected inside the support seat, and the support roller is rotatably connected to the conical roller body.

[0008] Preferably, rotating columns and positioning shafts are installed at the lower ends of the fixed seats. The rotating columns are rotatably connected in the machine base, and the positioning shafts are slidably connected in the machine base. A nut is threadedly connected to the circumferential surface of the positioning shaft. The fixed seat is slidably connected to the machine base, and the fixed seat is fixedly connected to the machine base through the positioning shaft and the nut. A plurality of connecting shafts are rotatably connected to the lower end of the machine base. Tooth discs are installed on the circumferential surfaces of the connecting shafts and the rotating columns, and the tooth discs mesh with each other.

[0009] Preferably, the cutting assembly includes guide columns, a mounting seat, a tool holder and cutting tools. A plurality of the guide columns are installed in the cutting partition frame. The mounting seat is slidably connected to the circumferential surface of the guide column. The tool holder is installed at the upper end of the mounting seat. A pair of the cutting tools are installed in the tool holder. The cutting tools are slidably connected to the conical roller body. A threaded rod is rotatably connected in the cutting partition frame, and the threaded rod is connected to the output end of a cutting motor installed at the front end of the cutting partition frame.

[0010] Preferably, a flow dividing pipe and bamboo joint pipes are installed in the tool holder. A pair of the bamboo joint pipes are fixedly connected to the flow dividing pipe, and spray heads are installed at the output ends of the bamboo joint pipes.

[0011] Preferably, through holes are formed in the upper end surface of the machine base. A storage box is installed at the lower end of the machine base. A filter plate is installed in the storage box. The filter plate is arc-shaped. A telescopic seat is installed at the lower end of the mounting seat. A scraping plate is slidably connected in the telescopic seat. A spring is installed between the scraping plate and the telescopic seat. The scraping plate is slidably connected to the filter plate.

[0012] Preferably, a water pump is installed at the right end of the storage box. The input pipe installed at the input end of the water pump is located at the bottom inside the storage box. The output pipe installed at the output end of the water pump is fixedly connected to the flow dividing pipe.

[0013] The technical effects and advantages of the present invention:

[0014] 1. By controlling the sliders to move to both sides, then hoisting the two conical roller bodies between the sliders, and then controlling the two groups of sliders to merge, at this time, the two conical roller bodies can be respectively clamped and fixed in the two groups of sliders through a plurality of clamping blocks. Under the combined action of the semi-tooth ring and the arc-shaped plate, the conical roller body is controlled to rotate. Finally, by controlling the cutting assembly to move backward, the effect of simultaneously cutting the two conical roller bodies is achieved, and the cutting efficiency of the conical roller body is improved.

[0015] 2. By loosening the nut on the circumferential surface of the positioning shaft and then rotating the fixed seat with the rotating column as the center to adjust the angle of the fixed seat, at this time, under the action of the rotating column, the connecting shaft and the tooth disc, the angles of the two fixed seats can be adjusted synchronously and symmetrically, and conical rollers with different tapers can be cut, while ensuring that the tapers of the two conical roller bodies are the same during processing.

[0016] 3. Under the action of the filter plate, when cutting the conical roller body, the cutting fluid and the cutting iron filings will fall downward through the through holes. The cutting iron filings are intercepted on the filter plate, while the cutting fluid penetrates downward through the filter plate and flows back to the storage tank. The scraper pushes the cutting iron filings staying on the filter plate to the front and back sides, and finally pushes them out and falls into the external collection box for collection, so that the cutting iron filings are discharged in real time during the operation of the equipment, reducing the later cleaning operation of the equipment, and avoiding the reaction caused by the long-term mixing of the cutting iron filings and the cutting fluid, which affects the quality of the cutting fluid. Brief Description of the Drawings

[0017] Figure 1 is the schematic structural diagram of the whole in the present invention;

[0018] Figure 2 is the schematic rear view in the present invention;

[0019] Figure 3 is the schematic bottom view in the present invention;

[0020] Figure 4 is the schematic diagram of the positioning component in the present invention;

[0021] Figure 5 is the schematic diagram when the positioning component clamps the conical roller body in the present invention;

[0022] Figure 6 is the schematic diagram when the slider expands in the present invention;

[0023] Figure 7 is the schematic diagram of the split of the arc-shaped plate in the present invention;

[0024] Figure 8 is the schematic rear view sectional view in the present invention;

[0025] Figure 9 is the schematic right-side partial sectional view in the present invention;

[0026] Figure 10 is the schematic diagram of the storage tank in the present invention;

[0027] Figure 11 is the schematic sectional view of the telescopic seat in the present invention;

[0028] Figure 12 is the schematic sectional view of the tool holder in the present invention.

[0029] The reference numerals are: 1, machine base; 101, cutting partition frame; 2, fixed seat; 201, rotating column; 202, positioning shaft; 203, connecting shaft; 204, toothed disc; 3, cutting assembly; 301, guiding column; 302, mounting seat; 303, tool holder; 304, cutting tool; 305, threaded rod; 306, cutting motor; 4, positioning assembly; 401, guiding rod; 402, slider; 403, arc-shaped plate; 404, lead screw; 405, clamping block; 406, cone roller body; 407, bidirectional threaded rod; 408, driving motor; 5, rotating mechanism; 501, rotating motor; 502, driving shaft; 503, gear; 504, semi-toothed ring; 6, telescopic guiding tube; 601, hydraulic cylinder; 602, supporting seat; 603, supporting roller; 7, shunt tube; 701, corrugated tube; 702, nozzle; 703, water pump; 704, input pipe; 705, output pipe; 8, through hole; 801, storage box; 802, filter plate; 803, telescopic seat; 804, scraper; 805, spring. Detailed implementation mode

[0030] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of each structure described in the following embodiments are merely examples. A numerically controlled cutting device for a conical roller of a ring rolling machine after wear welding involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0031] As Figures 1-7 Shown in the figure, in one embodiment, a numerically controlled cutting device for a conical roller of a ring rolling machine after wear welding is proposed, including a machine base 1. A pair of fixed seats 2 and a cutting partition frame 101 are installed at the upper end of the machine base 1. A cutting assembly 3 is arranged inside the cutting partition frame 101. A positioning assembly 4 is installed at the upper end of the fixed seat 2. The positioning assembly 4 includes a guiding rod 401, a slider 402, an arc-shaped plate 403, a lead screw 404 and a clamping block 405. A plurality of guiding rods 401 are installed inside the fixed seat 2. A pair of sliders 402 are slidably connected to the circumferential surface of the guiding rod 401. The arc-shaped plate 403 is rotatably connected inside the slider 402. A plurality of lead screws 404 are rotatably connected inside the arc-shaped plate 403. The clamping block 405 is rotatably connected to the circumferential surface of the lead screw 404. A cone roller body 406 is clamped between the clamping blocks 405. A rotating mechanism 5 is arranged inside the fixed seat 2. The rotating mechanism 5 includes a rotating motor 501, a gear 503 and a semi-toothed ring 504. The rotating motor 501 is installed inside the slider 402. A driving shaft 502 is installed at the output end of the rotating motor 501. The gear 503 is installed on the circumferential surface of the driving shaft 502. The semi-toothed ring 504 is installed on the circumferential surface of the arc-shaped plate 403 and meshes with the gear 503.

[0032] In the actual application of the embodiment of the present invention, by controlling the slider 402 to move to both sides, then hoisting the two conical roller bodies 406 between the sliders 402, and then controlling the combination of the two groups of sliders 402. At this time, the two conical roller bodies 406 can be respectively clamped and fixed in the two groups of sliders 402 through a plurality of clamping blocks 405, making the operation of fixing and removing the conical roller body 406 in the slider 402 more convenient and fast. Then, by controlling the rotation of the rotating motor 501, the rotating motor 501 will drive the gear 503 to rotate through the drive shaft 502. When the sliders 402 are combined, a pair of half-tooth rings 504 and a pair of arc-shaped plates 403 will be combined. The rotation of the gear 503 will drive the half-tooth ring 504 to rotate, and the half-tooth ring 504 will drive the arc-shaped plate 403 to rotate, thereby driving the conical roller body 406 to rotate. At this time, by controlling the cutting assembly 3 to move backward, the effect of simultaneously cutting the two conical roller bodies 406 is achieved, improving the cutting efficiency of the conical roller body 406.

[0033] As Figure 5 and 6 shown, as a preferred embodiment of the present invention, a bidirectional threaded rod 407 is rotatably connected inside the fixed seat 2. The slider 402 is threadedly connected to the bidirectional threaded rod 407, and the bidirectional threaded rod 407 is connected to the output end of a drive motor 408 installed on the surface of the fixed seat 2.

[0034] In the actual application of the embodiment of the present invention, by controlling the rotation of the drive motor 408, the drive motor 408 will drive the bidirectional threaded rod 407 to rotate, thereby achieving the effect of controlling the movement of the slider 402 and controlling the loading and unloading of the conical roller body 406.

[0035] In one case of the embodiment of the present invention, when controlling the operation of the drive motor 408, first control the arc-shaped plate 403 to completely move into the corresponding slider 402 to ensure that the slider 402 can complete the combination and separation operations.

[0036] As Figure 5 and 6 shown, as another preferred embodiment of the present invention, a telescopic guide tube 6 and a hydraulic cylinder 601 are installed at the upper end of the fixed seat 2. A support seat 602 is installed at the upper end of the telescopic guide tube 6 and the upper end of the output end of the hydraulic cylinder 601. A support roller 603 is rotatably connected inside the support seat 602, and the support roller 603 is rotatably connected to the conical roller body 406.

[0037] In the actual application of the embodiment of the present invention, when the slider 402 moves to both sides, the conical roller body 406 can be hoisted and supported on the support roller 603 for storage. When processing conical roller bodies 406 with different diameters, by controlling the operation of the hydraulic cylinder 601, the height position of the support roller 603 in the support seat 602 is changed to adjust the position of the central axis of the conical roller body 406, so that the central axis of the conical roller body 406 coincides with the central axis position of the arc plate 403. Subsequently, the lead screw 404 is rotated to adjust the position of the clamping block 405 outward. When the sliders 402 are combined, first, the upper lead screw 404 is rotated to drive the clamping block 405 to move inward, and gradually clamp the conical roller body 406 located on the support roller 603, thereby achieving the effect of fixing the conical roller body 406.

[0038] In one case of the embodiment of the present invention, when the size of the processed conical roller body 406 changes, by changing the installation height and telescopic length of the cutting tool 304, the effect of matching the size of the conical roller body 406 is achieved.

[0039] As Figure 3 and 4 As shown in

[0040] In the actual application of the embodiment of the present invention, when processing conical roller bodies 406 with different tapers, by loosening the nut on the circumferential surface of the positioning shaft 202 and then rotating the fixed seat 2 with the rotating column 201 as the center to adjust the angle of the fixed seat 2. At this time, under the action of the rotating column 201, the connecting shaft 203 and the gear disc 204, the angles of the two fixed seats 2 can be adjusted symmetrically synchronously, ensuring that the tapers of the two conical roller bodies 406 are the same during processing.

[0041] In one case of the embodiment of the present invention, when the rotating column 201 fixed at the lower end of one of the fixed seats 2 rotates, at this time, under the action of a plurality of gear discs 204, the two fixed seats 2 rotate in opposite directions, thereby achieving the effect of facilitating the symmetrical adjustment of the angle of the fixed seat 2.

[0042] As Figure 8 、 9As shown in FIGS. 10 and 11, as another preferred embodiment of the present invention, the cutting assembly 3 includes guide posts 301, a mounting base 302, a tool holder 303, and a cutting tool 304. A plurality of guide posts 301 are installed in the cutting partition frame 101. The mounting base 302 is slidably connected to the circumferential surface of the guide posts 301. The tool holder 303 is installed at the upper end of the mounting base 302. A pair of cutting tools 304 are installed in the tool holder 303. The cutting tool 304 is slidably connected to the conical roller body 406. A threaded rod 305 is rotatably connected in the cutting partition frame 101. The threaded rod 305 is connected to the output end of a cutting motor 306 installed at the front end of the cutting partition frame 101.

[0043] In the actual application of the embodiment of the present invention, when the conical roller body 406 is fixed, at this time, by installing the cutting tool 304 at a suitable height position, then by controlling the rotation of the conical roller body 406, and then controlling the operation of the cutting motor 306 to drive the rotation of the threaded rod 305, the threaded rod 305 will drive the mounting base 302 to move, thereby driving the cutting tool 304 to contact the conical roller body 406, realizing the cutting effect on the conical roller body 406.

[0044] As Figure 12 shown, as another preferred embodiment of the present invention, a flow dividing pipe 7 and a corrugated pipe 701 are installed in the tool holder 303. A pair of corrugated pipes 701 are fixedly connected to the flow dividing pipe 7. Spray heads 702 are installed at the output ends of the corrugated pipes 701.

[0045] In the actual application of the embodiment of the present invention, by pre-adjusting the positions of the spray heads 702 on the corrugated pipe 701 to be aligned with the cutting tool 304, when the cutting tool 304 contacts the conical roller body 406, by conveying cutting fluid into the flow dividing pipe 7, the cutting fluid is sprayed through the spray heads 702 at the position where the cutting tool 304 contacts the conical roller body 406, thereby realizing the effect of cooling and lubricating the cutting tool 304, and improving the service life and cutting effect of the cutting tool 304.

[0046] As Figures 8-10 shown, as another preferred embodiment of the present invention, a through hole 8 is formed in the upper end surface of the machine base 1. A storage box 801 is installed at the lower end of the machine base 1. A filter plate 802 is installed in the storage box 801. The filter plate 802 is arc-shaped. A telescopic seat 803 is installed at the lower end of the mounting base 302. A scraping plate 804 is slidably connected in the telescopic seat 803. A spring 805 is installed between the scraping plate 804 and the telescopic seat 803. The scraping plate 804 is slidably connected to the filter plate 802.

[0047] In the actual application of the embodiments of the present invention, when cutting the conical roller body 406, the cutting fluid and the cutting iron filings will fall downward through the through hole 8. The cutting iron filings are intercepted on the filter plate 802, while the cutting fluid penetrates downward through the filter plate 802 and flows back into the storage tank 801. At the same time, the mounting seat 302 drives the telescopic seat 803 to move synchronously, and the telescopic seat 803 drives the scraper 804 to slide on the filter plate 802. At this time, under the action of the spring 805, when the scraper 804 moves back and forth on the filter plate 802, it always fits with the filter plate 802, so that the cutting iron filings staying on the filter plate 802 can be pushed to the front and back sides, and finally pushed out and fall into the external collection box for collection, enabling the cutting iron filings to be discharged in real time during the operation of the equipment, reducing the later cleaning operation of the equipment.

[0048] As Figure 8 and 9 shown, as another preferred embodiment of the present invention, a water pump 703 is installed at the right end of the storage tank 801. The input pipe 704 installed at the input end of the water pump 703 is located at the inner bottom of the storage tank 801, and the output pipe 705 installed at the output end of the water pump 703 is fixedly connected to the shunt pipe 7.

[0049] In the actual application of the embodiments of the present invention, by controlling the operation of the water pump 703, the cutting fluid can be circulated and extracted for use. Under the action of the filter plate 802, the cutting iron filings are discharged and cleaned in real time, and at the same time, the cutting fluid is filtered and flows back into the storage tank 801 to avoid chemical reactions caused by the long-term mixing of the cutting iron filings and the cutting fluid, which may affect the quality of the cutting fluid.

[0050] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the internal communication of two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the described object changes, the relative position relationship may change;

[0051] Second: In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiments and different embodiments of the present invention can be combined with each other;

[0052] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A numerical control cutting device for a conical roller of a ring rolling machine after wear welding, comprising a machine base (1), characterized in that: A pair of fixed seats (2) and a cutting partition frame (101) are installed at the upper end of the machine base (1). A cutting assembly (3) is arranged inside the cutting partition frame (101). A positioning assembly (4) is installed at the upper end of the fixed seat (2). The positioning assembly (4) includes a guide rod (401), a slider (402), an arc-shaped plate (403), a lead screw (404), and a clamping block (405). A plurality of the guide rods (401) are installed inside the fixed seat (2). A pair of the sliders (402) are slidably connected to the circumferential surface of the guide rod (401). The arc-shaped plate (403) is rotatably connected inside the slider (402). A plurality of the lead screws (404) are rotatably connected inside the arc-shaped plate (403). The clamping block (405) is rotatably connected to the circumferential surface of the lead screw (404). A cone roller body (406) is clamped between the clamping blocks (405). A rotating mechanism (5) is arranged inside the fixed seat (2). The rotating mechanism (5) includes a rotating motor (501), a gear (503), and a semi-toothed ring (504). The rotating motor (501) is installed inside the slider (402). A driving shaft (502) is installed at the output end of the rotating motor (501). The gear (503) is installed on the circumferential surface of the driving shaft (502). The semi-toothed ring (504) is installed on the circumferential surface of the arc-shaped plate (403) and meshes with the gear (503). Rotating columns (201) and positioning shafts (202) are installed at the lower ends of the fixed seats (2). The rotating columns (201) are rotatably connected inside the machine base (1). The positioning shafts (202) are slidably connected inside the machine base (1). A nut is threadedly connected to the circumferential surface of the positioning shaft (202). The fixed seat (2) is slidably connected to the machine base (1). The fixed seat (2) is fixedly connected to the machine base (1) through the positioning shaft (202) and the nut. A plurality of connecting shafts (203) are rotatably connected to the lower end of the machine base (1). Tooth discs (204) are installed on the circumferential surfaces of the connecting shafts (203) and the rotating columns (201). The tooth discs (204) mesh with each other. The cutting assembly (3) includes a guide post (301), a mounting seat (302), a tool holder (303), and a cutting tool (304). A plurality of the guide posts (301) are installed inside the cutting partition frame (101). The mounting seat (302) is slidably connected to the circumferential surface of the guide post (301). The tool holder (303) is installed at the upper end of the mounting seat (302). A pair of the cutting tools (304) are installed inside the tool holder (303). The cutting tool (304) is slidably connected to the cone roller body (406). A threaded rod (305) is rotatably connected inside the cutting partition frame (101). The threaded rod (305) is connected to the output end of a cutting motor (306) installed at the front end of the cutting partition frame (101).

2. The numerical control cutting device for the conical roller of a ring rolling mill after wear welding according to claim 1, wherein: A bidirectional threaded rod (407) is rotatably connected inside the fixed seat (2). The slider (402) is threadedly connected to the bidirectional threaded rod (407). The bidirectional threaded rod (407) is connected to the output end of a drive motor (408) installed on the surface of the fixed seat (2).

3. The numerical control cutting device for the conical roller of a ring rolling mill after wear welding according to claim 1, wherein: An expansion guide tube (6) and a hydraulic cylinder (601) are installed at the upper end of the fixed seat (2). A support seat (602) is installed at the upper ends of the upper end of the expansion guide tube (6) and the output end of the hydraulic cylinder (601). A support roller (603) is rotatably connected inside the support seat (602). The support roller (603) is rotatably connected to the conical roller body (406).

4. A numerical control cutting device for a cone rod of a ring rolling machine after wear welding, according to claim 1, characterized in that: A flow dividing pipe (7) and a corrugated pipe (701) are installed inside the tool holder (303). A pair of the corrugated pipes (701) are fixedly connected to the flow dividing pipe (7). Spray nozzles (702) are installed at the output ends of the corrugated pipes (701).

5. A numerical control cutting device for a conical roller of a ring rolling machine after wear welding, characterized in that: A through hole (8) is formed in the upper end surface of the machine base (1). A storage box (801) is installed at the lower end of the machine base (1). A filter plate (802) is installed inside the storage box (801). The filter plate (802) is arc-shaped. A telescopic seat (803) is installed at the lower end of the mounting seat (302). A scraper (804) is slidably connected inside the telescopic seat (803). A spring (805) is installed between the scraper (804) and the telescopic seat (803). The scraper (804) is slidably connected to the filter plate (802).

6. A numerical control cutting device for a cone roller of a ring rolling machine after wear welding, characterized in that: A water pump (703) is installed at the right end of the storage box (801). An input pipe (704) installed at the input end of the water pump (703) is located at the inner bottom of the storage box (801). An output pipe (705) installed at the output end of the water pump (703) is fixedly connected to the flow dividing pipe (7).

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