Four-way inner wall polishing device with fluid recovery structure

Abstract

The four-way inner wall grinding device comprises a grinding table, a grinding mechanism is arranged on the grinding table, a liquid guide channel is formed in the upper end of the grinding table, a placing assembly is installed in the middle of the upper end of the liquid guide channel, and a supporting frame is arranged on the outer side of the upper end of the grinding table; the two sides of the top are connected with the placing base through a plurality of fixing bolts, and meanwhile a first washing mechanism is arranged in the placing base. According to the four-way inner wall grinding device with the fluid recovery structure, a bidirectional motor drives a first ball screw to rotate, so that the first ball screw drives a first gear to horizontally move and rotate at the same time, and then the first gear drives a second gear to rotate; and a second gear drives a third gear and a rotating shaft to rotate in a positioning seat at the same time, so that a grinding rod grinds the interiors of the two ends of the four-way joint at the same time while horizontally moving, and therefore the grinding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field related to four-way processing and grinding, and in particular to a four-way inner wall grinding device with a fluid liquid recovery structure. Background Art

[0002] A cross is a pipe fitting or pipe connector, also called a pipe fitting cross or a pipe fitting cross, a cross joint, used at the branch pipe of the main pipeline. Common ones include straight cross, oblique cross, angled cross, and reducing cross. When it is just made, its inner wall is very rough, so it needs to be polished inside.

[0003] After searching, it was found that the typical grinding device in the prior art is such as the publication number CN218136828U, a grinding equipment for processing a straight four-way, which includes a base, one end of the top of the base is provided with a mounting groove, a disc is installed inside the mounting groove, a motor is installed at the bottom of the base, the output end of the motor is fixedly connected to the bottom of the disc, a fixed end is installed on the top of the disc, a moving groove is provided at the other end of the top of the base, a fixed threaded rod and a moving block are installed inside the moving groove, the fixed threaded rod passes through the moving block, and a double-output shaft motor is installed on the top of the moving block; the grinding equipment for processing a straight four-way has the functions of fixed clamping, moving grinding and polishing and rotation adjustment, so that the inside of the straight four-way can be automatically ground and polished, thereby effectively improving the efficiency and speed of grinding and polishing the straight four-way and reducing the labor intensity of workers.

[0004] To sum up, when the existing grinding device is in use, it can only grind one of the four openings of the four-way, which takes a long time, is very cumbersome to operate, and is time-consuming and labor-intensive, resulting in reduced work efficiency. Secondly, the debris and dust generated during grinding are not processed, resulting in increased friction between the grinding tool and the inner wall of the four-way, and the friction generates heat, which easily increases the temperature of the grinding tool and the four-way, reducing the service life and processing quality. In view of the above problems, the existing equipment needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a four-way inner wall grinding device with a fluid liquid recovery structure to solve the problem that the existing grinding device proposed in the above background technology can only grind one of the four openings of the four-way when in use, which takes a long time, is very cumbersome to operate, time-consuming and labor-intensive, thereby reducing work efficiency; secondly, the debris and dust generated during grinding are not processed, resulting in increased friction between the grinding tool and the inner wall of the four-way, and the friction generates heat, which easily causes the temperature of the grinding tool and the four-way to rise, thereby reducing the service life and processing quality.

[0006] To achieve the above object, the present invention provides the following technical solution: a four-way inner wall grinding device with a fluid recovery structure, comprising a grinding table, A grinding mechanism is provided on the grinding table, and the grinding mechanism includes a bidirectional motor, and first ball screws are provided at both ends of the bidirectional motor, and the two first ball screws are connected to the first gear through the first ball nut seat, and the upper ends of the two first gears pass through the corresponding movable through slots on the grinding table and extend to the top of the movable through slot, and second ball screws are provided inside the grooves symmetrically provided on both sides of the upper end of the grinding table, and the two second ball screws are connected to the second gear and the mounting seat through the second ball nut seat, a positioning seat is provided in the middle of the upper end of the mounting seat, and the positioning seat is connected to the rotating shaft through a bearing, and a third gear and a grinding rod are provided at both ends of the rotating shaft respectively; A support frame is arranged on the outer side of the upper end of the polishing table, and the two sides of the top are connected to the placing seat through a plurality of fixing bolts, and a first flushing mechanism is arranged inside the placing seat.

[0007] Preferably, a liquid guide channel is provided below the upper end of the grinding table between the two grinding rods, and a placement assembly is installed in the middle of the upper end of the liquid guide channel. The placement assembly includes a vertical plate, a driving motor and a clamping bracket. A driving motor is installed on the back of the vertical plate, and the output end of the driving motor passes through the middle of the vertical plate and is rotatably connected with the clamping bracket. A baffle rod is provided on the front of the vertical plate above one side of the clamping bracket, and a top plate is provided on the top of the vertical plate.

[0008] Preferably, a cross-shaped locking groove is provided on the front of the clamping card frame, and an electromagnetic block is arranged on the inner side of the middle of the locking groove. At the same time, a protrusion is installed on the lower end of one side of the clamping card frame. The protrusion fits with one side of the baffle rod when the clamping card frame rotates, so as to improve the accuracy of the rotation angle of the clamping card frame.

[0009] Preferably, the bottom end of the liquid guiding channel is a structure with high front and low rear, and a second flushing mechanism is installed on the rear side of the liquid guiding channel, and the second flushing mechanism includes a liquid receiving bucket, a filter screen is provided at the lower end of the liquid receiving bucket at the rear side of the liquid guiding channel, and the upper end of a suction pipe provided on one side of the liquid receiving bucket passes through the filter screen and is connected to the positioning pipe, and a suction pump is installed on the suction pipe, the top of the positioning pipe is connected to the output end of the electric telescopic rod, and the electric telescopic rod is connected to the middle of the upper end of the top plate through a U-shaped frame, and a spray head is threadedly connected to the top of the positioning pipe.

[0010] Preferably, the second gear is sleeved on the outside of one end of the second ball nut seat, and two ends of the second gear are respectively meshed and connected with the first gear and the third gear.

[0011] Preferably, the grinding rod is detachably connected to one end of the rotating shaft, and the outer diameter of the grinding rod is the same as the inner diameter of the four-way, and the position of the grinding rod and the position of the opening on one side of the four-way are in the same horizontal plane.

[0012] Preferably, the first flushing mechanism includes a liquid storage tank, and drainage cylinders are symmetrically arranged on both sides of the lower end of the liquid storage tank, and a switch assembly is arranged on the drainage cylinder. At the same time, a delivery pipe is arranged at the bottom of the lower end of the drainage cylinder. The delivery pipe passes through one side of the top plate and is connected to a corresponding electric nozzle, and the electric nozzle is connected to the lower end of the top plate through a mounting frame, and the electric nozzle is rotatably connected to the inside of the mounting frame.

[0013] Preferably, the switch assembly includes a connecting frame, a movable card seat, a rubber sleeve, a liquid conducting hole and a rotating ball. The connecting frame is an L-shaped structure, and the lower end of the connecting frame is connected to the upper end of the positioning seat arranged on the corresponding side. At the same time, the other end of the connecting frame passes through the positioning hole opened on the discharge cylinder through the movable card seat. The outer side of the movable card seat is sleeved with a rubber sleeve, and the inner side of the outer side of the rubber sleeve is connected to the inner side of the positioning hole. The movable card seat is provided with a liquid conducting hole on one side close to the connecting frame, and a rotating ball is rotatably connected inside the liquid conducting hole.

[0014] Preferably, the spray head forms a lifting structure with the top plate through an electric telescopic rod and a positioning tube, and the spray head is located above the center of the upper end opening of the four-way.

[0015] Compared with the prior art, the invention has the following beneficial effects: the four-way inner wall polishing device with a fluid recovery structure is (1) In order to solve the problem that the existing grinding device can only grind one of the four openings of the four-way when in use, which takes a long time, is very cumbersome to operate, and is time-consuming and labor-intensive, thereby reducing work efficiency, the present application drives the first ball screw to rotate by a bidirectional motor, so that the first ball screw drives the first gear to move horizontally and rotate at the same time, and then the first gear drives the second gear to rotate, so that the mounting seat provided on the second ball screw is driven to move horizontally, and the second gear simultaneously drives the third gear and the rotating shaft to rotate inside the positioning seat, so that the grinding rod moves horizontally and grinds the inside of both ends of the four-way at the same time, thereby improving the grinding efficiency; (2) In order to solve the problem that the existing grinding device does not handle the debris and dust generated during grinding when in use, resulting in increased friction between the grinding tool and the inner wall of the four-way, and the friction generates heat, which easily causes the temperature of the grinding tool and the four-way to rise, thereby reducing the service life and processing quality, the present application drives the positioning seat to move toward the side of the placement component through the mounting seat, so that the connecting frame pushes the moving card seat to move inside the positioning hole opened inside the discharge cylinder, so that the liquid guide hole is located inside the discharge cylinder, and then the fluid inside the liquid storage tank is transported to the electric spray head through the discharge cylinder, the liquid guide hole and the delivery pipe, so that the electric spray head sprays the fluid on the connection between the grinding rod and the inner wall of the four-way, thereby cooling it during grinding to prevent the temperature from being too high; (3) In order to solve the problem that the existing grinding device does not process the inside of the four-way after grinding during use, resulting in debris and dust adhering to the inside, which needs to be processed separately later, reducing the practicality of use, the present application collects the waste liquid and debris through the liquid guide channel, and then filters them through the filter plate and recovers them in the liquid receiving bucket for later use, thereby improving the utilization rate. The positioning tube and the injection head are pushed into the four-way by the electric telescopic rod, and the suction pump is started to transport the fluid in the liquid receiving bucket through the suction tube to the injection head for spraying, so as to flush the grinding debris inside the four-way and improve the practicality of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the front view structure of the placement assembly of the present invention; Figure 5 It is a schematic diagram of the front cross-sectional structure of the first flushing mechanism of the present invention; Figure 6 It is a schematic diagram of the enlarged structure of point B in FIG. 5 of the present invention; Figure 7 It is a rear cross-sectional structural schematic diagram of the present invention; Figure 8 It is a rear cross-sectional structural schematic diagram of the second flushing mechanism of the present invention; Fig. 9 It is a rear view structural schematic diagram of the present invention.

[0017] In the figure: 1. grinding table; 101. moving groove; 102. liquid guide channel; 2. grinding mechanism; 201. bidirectional motor; 202. first ball screw; 203. first gear; 204. second ball screw; 205. second gear; 206. mounting seat; 207. positioning seat; 208. rotating shaft; 209. third gear; 210. grinding rod; 3. placing assembly; 301. vertical plate; 302. driving motor; 303. clamping bracket; 304. electromagnetic block; 305. convex block; 306. stop rod; 307, top plate; 4, support frame; 5, fixing bolt; 6, placement seat; 7, first flushing mechanism; 701, liquid storage tank; 702, liquid discharge cylinder; 703, delivery pipe; 704, electric spray head; 705, mounting frame; 8, switch assembly; 801, connecting frame; 802, movable card seat; 803, rubber sleeve; 804, liquid guide hole; 805, rotating ball; 9, liquid receiving bucket; 901, filter screen; 10, suction pipe; 11, suction pump; 12, positioning tube; 13, electric telescopic rod; 14, spray head. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-9 The present invention provides a technical solution: a four-way inner wall grinding device with a fluid recovery structure, according to Figure 1 , Figure 2 , Figure 3 , Figure 7 and Fig. 9 As shown, a grinding mechanism 2 is provided on the grinding table 1, and the grinding mechanism 2 includes a bidirectional motor 201, and first ball screws 202 are provided at both ends of the bidirectional motor 201, and the two first ball screws 202 are connected to the first gear 203 through the first ball nut seat, and the upper ends of the two first gears 203 pass through the corresponding moving grooves 101 opened on the grinding table 1 and extend to the top of the moving grooves 101, and second ball screws 204 are provided inside the grooves symmetrically opened on both sides of the upper end of the grinding table 1, and the two second ball screws 204 are connected to the second gear 205 and the mounting seat 206 through the second ball nut seat, and the second gear The wheel 205 is sleeved on the outside of one end of the second ball nut seat, and the two ends of the second gear 205 are respectively meshed with the first gear 203 and the third gear 209. A positioning seat 207 is set in the middle of the upper end of the mounting seat 206, and the positioning seat 207 is connected to the rotating shaft 208 through a bearing. At the same time, the third gear 209 and the grinding rod 210 are respectively set at both ends of the rotating shaft 208. The grinding rod 210 is detachably connected to one end of the rotating shaft 208, which is convenient for replacing the grinding rod 210. The outer diameter of the grinding rod 210 is the same as the inner diameter of the four-way, and the position of the grinding rod 210 is on the same horizontal plane as the position of the opening on one side of the four-way, thereby improving the accuracy of the grinding position.

[0020] When in use, the first ball screw 202 is driven to rotate by the bidirectional motor 201, so that the first ball nut seat installed on the first ball screw 202 drives the first gear 203 to rotate, and then the first gear 203 drives the second gear 205 and the second ball nut seat to rotate on the second ball screw 204, and then the second gear 205 drives the third gear 209, the rotating shaft 208 and the polishing rod 210 to rotate synchronously. At the same time, the first ball nut seat and the second ball nut seat rotate while making horizontal linear movements on the first ball screw 202 and the second ball screw 204, so that the second ball nut seat drives the mounting seat 206, the positioning seat 207, the rotating shaft 208 and the polishing rod 210 to move horizontally, and the position of the polishing rod 210 is moved, so that the polishing rod 210 is inserted into the inside of the four-way to polish its inner wall. This operation can polish the two opposite inner walls of the four-way at the same time, thereby improving the polishing efficiency.

[0021] according to Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, the upper end of the grinding table 1 is located between the two grinding rods 210 and a liquid conducting channel 102 is provided below the lower part, and a placing component 3 is installed in the middle of the upper end of the liquid conducting channel 102. At the same time, the placing component 3 includes a vertical plate 301, a driving motor 302 and a clamping bracket 303. The driving motor 302 is installed on the back of the vertical plate 301, and the output end of the driving motor 302 passes through the vertical plate 301 and is rotatably connected with the clamping bracket 303. A cross-shaped engaging groove is provided on the front of the clamping bracket 303, and an electromagnetic block 304 is provided on the inner side of the middle of the engaging groove. At the same time, a protrusion 305 is installed on the lower end of one side of the clamping bracket 303. The protrusion 305 fits with one side of the baffle 306 when the clamping bracket 303 rotates, so as to improve the accuracy of the rotation angle of the clamping bracket 303. A baffle 306 is provided on the front of the vertical plate 301 above one side of the clamping bracket 303, and a top plate 307 is provided on the top of the vertical plate 301.

[0022] When in use, the four-way is clamped in the cross-shaped clamping groove opened on the front side of the clamping bracket 303, and then the electromagnetic block 304 is energized so that the electromagnetic block 304 adsorbs the four-way to improve the stability of the placement. When it is necessary to grind the inside of the other two ends of the four-way, the driving motor 302 is started to drive the clamping bracket 303 to rotate, so that the protrusion 305 set at the lower end of one side of the clamping bracket 303 is in contact with one side of the baffle 306, so that after the four-way is rotated, the positions of the two unpolished ends and the position of the grinding rod 210 are on the same horizontal line, so that when grinding, the four-way is accurately placed after rotation, thereby improving the grinding efficiency.

[0023] Further explanation: the bottom end of the interior of the liquid guiding channel 102 is a structure with a high front and a low rear, and a second flushing mechanism is installed on the rear side of the liquid guiding channel 102. At the same time, the second flushing mechanism includes a liquid receiving bucket 9, and a filter screen plate 901 is arranged inside the liquid receiving bucket 9 at the lower end of the rear side of the liquid guiding channel 102, and the upper end of the suction pipe 10 arranged on one side of the liquid receiving bucket 9 passes through the filter screen plate 901 and is connected to the positioning tube 12. At the same time, a suction pump 11 is installed on the suction pipe 10, and the top of the positioning tube 12 is connected to the output end of the electric telescopic rod 13, and the electric telescopic rod 13 is connected to the middle of the upper end of the top plate 307 through a U-shaped frame. At the same time, a spray head 14 is threadedly connected to the top of the positioning tube 12, and the spray head 14 forms a lifting structure with the top plate 307 through the electric telescopic rod 13 and the positioning tube 12, and the position of the spray head 14 is located above the center of the upper end opening of the four-way.

[0024] When in use, the liquid guiding channel 102 collects the flushing fluid and waste chips, and then transports them to the liquid receiving bucket 9, and filters them through the filter screen plate 901 to remove the waste chips in the fluid, so that the fluid can be recycled and reused. When it is necessary to clean the inside of the polished four-way, start the electric telescopic rod 13 to push the positioning tube 12 and the injection head 14 downward, and make the injection head 14 located inside the four-way, and then start the suction pump 11 to transport the fluid in the liquid receiving bucket 9 through the suction tube 10 and the positioning tube 12 to the injection head 14 for injection, thereby flushing the waste chips adhered to the inside of the four-way, thereby improving the practicality of use.

[0025] according to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Fig. 9 As shown, a support frame 4 is provided on the outer side of the upper end of the grinding table 1, and the two sides of the top are connected to the placement seat 6 by multiple fixing bolts 5. At the same time, a first flushing mechanism 7 is provided inside the placement seat 6. The first flushing mechanism 7 includes a liquid storage tank 701, and drainage cylinders 702 are symmetrically provided on both sides of the lower end of the liquid storage tank 701, and a switch assembly 8 is provided on the drainage cylinder 702. Through the switch assembly 8, the fluid is not easy to flow out automatically when not grinding, so that the fluid is not easy to be wasted, saving resources and reducing cost output. At the same time, a delivery pipe 703 is provided at the bottom of the lower end of the drainage cylinder 702. The delivery pipe 703 passes through one side of the top plate 307 and is connected to the corresponding electric spray head 704, and the electric spray head 704 is connected to the lower end of the top plate 307 through a mounting frame 705. At the same time, the electric spray head 704 is rotatably connected to the inside of the mounting frame 705. Through the mounting frame 705, the placement angle of the electric spray head 704 can be adjusted, thereby improving the practicality of use.

[0026] To further illustrate, the switch assembly 8 includes a connecting frame 801, a movable card seat 802, a rubber sleeve 803, a liquid conducting hole 804 and a rotating ball 805. The connecting frame 801 is an L-shaped structure, and the lower end of the connecting frame 801 is connected to the upper end of the positioning seat 207 set on the corresponding side. At the same time, the other end of the connecting frame 801 passes through the positioning hole opened on the discharge cylinder 702 through the movable card seat 802. The outer side of the movable card seat 802 is sleeved with a rubber sleeve 803, and the inner side of the outer side of the rubber sleeve 803 is connected to the inner side of the positioning hole. The movable card seat 802 is provided with a liquid conducting hole 804 on the side close to the connecting frame 801, and the liquid conducting hole 804 is rotatably connected with a rotating ball 805. The rotating ball 805 rotates inside the liquid conducting hole 804, so that when the fluid passes through the liquid conducting hole 804, the flow rate can be reduced to avoid excessive flow and waste of fluid.

[0027] When in use, the connecting frame 801, driven by the positioning seat 207, pushes the movable clamping seat 802 to move inside the positioning hole opened on the discharge cylinder 702, so that the liquid guiding hole 804 is located inside the discharge cylinder 702, and then the fluid in the liquid storage tank 701 enters the delivery pipe 703 through the discharge cylinder 702 and the liquid guiding hole 804, and then the electric nozzle 704 is turned on to allow the fluid to be sprayed out through the electric nozzle 704 to cool down the grinding rod 210 and the four-way connection.

[0028] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A four-way inner wall grinding device with a fluid recovery structure, comprising a grinding table (1), characterized in that: The grinding table (1) is provided with a grinding mechanism (2), and the grinding mechanism (2) comprises a bidirectional motor (201), and first ball screws (202) are provided at both ends of the bidirectional motor (201), and the two first ball screws (202) are connected to first gears (203) via first ball nut seats, and the upper ends of the two first gears (203) pass through corresponding movable through slots (101) provided on the grinding table (1) and extend to the top of the movable through slots (101), and the grinding A second ball screw (204) is arranged inside the grooves symmetrically opened on both sides of the upper end of the table (1), and the two second ball screws (204) are connected to a second gear (205) and a mounting seat (206) via a second ball nut seat, a positioning seat (207) is arranged in the middle of the upper end of the mounting seat (206), and the positioning seat (207) is connected to a rotating shaft (208) via a bearing, and a third gear (209) and a grinding rod (210) are respectively arranged at both ends of the rotating shaft (208); A support frame (4) is arranged on the outer side of the upper end of the polishing table (1), and two sides of the top are connected to a placement seat (6) via a plurality of fixing bolts (5), and a first flushing mechanism (7) is arranged inside the placement seat (6).

2. The four-way inner wall polishing device with a fluid recovery structure according to claim 1, characterized in that: The upper end of the polishing table (1) is located between the two polishing rods (210) and is provided with a liquid guide channel (102) below. A placement assembly (3) is installed in the middle of the upper end of the liquid guide channel (102). The placement assembly (3) comprises a vertical plate (301), a drive motor (302) and a clamping bracket (303). The drive motor (302) is installed on the back of the vertical plate (301). The output end of the drive motor (302) passes through the middle of the vertical plate (301) and is rotatably connected to the clamping bracket (303). A stop rod (306) is provided on the front of the vertical plate (301) and is located above one side of the clamping bracket (303). A top plate (307) is provided on the top of the vertical plate (301).

3. The four-way inner wall polishing device with a fluid recovery structure as claimed in claim 2, characterized in that: The front of the clamping frame (303) is provided with a cross-shaped engaging groove, and an electromagnetic block (304) is arranged on the inner side of the middle of the engaging groove. At the same time, a protrusion (305) is installed at the lower end of one side of the clamping frame (303). The protrusion (305) is fitted with one side of the blocking rod (306) when the clamping frame (303) rotates, so as to improve the accuracy of the rotation angle of the clamping frame (303).

4. The four-way inner wall polishing device with a fluid recovery structure as claimed in claim 2, characterized in that: The bottom end of the liquid guiding channel (102) is a structure with a high front and a low rear, and a second flushing mechanism is installed at the rear side of the liquid guiding channel (102). The second flushing mechanism comprises a liquid receiving bucket (9), a filter screen plate (901) is provided at the lower end of the rear side of the liquid guiding channel (102) inside the liquid receiving bucket (9), and the upper end of a suction pipe (10) provided at one side of the liquid receiving bucket (9) penetrates the filter screen plate (901) and is connected to a positioning pipe (12), and a suction pump (11) is installed on the suction pipe (10), and the top of the positioning pipe (12) is connected to the output end of an electric telescopic rod (13), and the electric telescopic rod (13) is connected to the middle of the upper end of the top plate (307) through a U-shaped frame, and a spray head (14) is threadedly connected to the top of the positioning pipe (12).

5. The four-way inner wall polishing device with a fluid recovery structure according to claim 1, characterized in that: The second gear (205) is sleeved on the outside of one end of the second ball nut seat, and two ends of the second gear 205 are respectively meshed and connected with the first gear (203) and the third gear (209).

6. The four-way inner wall polishing device with a fluid recovery structure according to claim 1, characterized in that: The grinding rod (210) is detachably connected to one end of the rotating shaft (208), and the outer diameter of the grinding rod (210) is the same as the inner diameter of the four-way. The position of the grinding rod (210) and the position of the opening on one side of the four-way are in the same horizontal plane.

7. The four-way inner wall polishing device with a fluid recovery structure according to claim 1, characterized in that: The first flushing mechanism (7) comprises a liquid storage tank (701), and liquid discharge cylinders (702) are symmetrically arranged on both sides of the lower end of the liquid storage tank (701), and a switch assembly (8) is arranged on the liquid discharge cylinder (702). At the same time, a delivery pipe (703) is arranged at the bottom of the lower end of the liquid discharge cylinder (702), and the delivery pipe (703) passes through one side of the top plate (307) and is connected to a correspondingly arranged electric spray head (704), and the electric spray head (704) is connected to the lower end of the top plate (307) through a mounting frame (705), and the electric spray head (704) is rotatably connected to the inside of the mounting frame (705).

8. The four-way inner wall polishing device with a fluid recovery structure as claimed in claim 7, characterized in that: The switch assembly (8) comprises a connecting frame (801), a movable card seat (802), a rubber sleeve (803), a liquid guide hole (804) and a rotating ball (805). The connecting frame (801) is an L-shaped structure, and the lower end of the connecting frame (801) is connected to the upper end of a positioning seat (207) provided on the corresponding side, while the other end of the connecting frame (801) passes through the positioning hole provided on the liquid discharge cylinder (702) through the movable card seat (802). The outer side of the movable card seat (802) is sleeved with a rubber sleeve (803), and the inner side of the outer side of the rubber sleeve (803) is connected to the inner side of the positioning hole. The movable card seat (802) is provided with a liquid guide hole (804) on a side close to the connecting frame (801), and a rotating ball (805) is rotatably connected inside the liquid guide hole (804).

9. The four-way inner wall polishing device with a fluid recovery structure as claimed in claim 4, characterized in that: The spray head (14) forms a lifting structure with the top plate (307) via an electric telescopic rod (13) and a positioning tube (12), and the spray head (14) is located above the center of the upper opening of the four-way.

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