Water-cooling oil cylinder

Abstract

The invention discloses a water-cooling oil cylinder, which belongs to the technical field of water-cooling oil cylinders, and comprises a cooling water shell, the two ends of the cylinder body are fixedly connected between the inner walls of the two sides of the cooling water shell; one end of each oil pipe penetrates through the top of the cylinder body, heat is guided out through the heat conducting plate, low-temperature cooling water circulates and reciprocates, the heat is continuously taken away, the temperature of the oil cylinder is maintained within the normal working range, the connecting rod and the mixing rod are driven to rotate by adjusting the connecting ring, the flowability of the cooling water is improved, the cylinder body is evenly cooled, and the service life of the oil cylinder is prolonged. Stable operation of the oil cylinder under various working conditions is guaranteed, the working efficiency and reliability of equipment are improved, the structure of the water cooling cylinder is optimized through cooperation of the guide pipe, the dustproof ring, the Teflon guide, the split alloy sleeve, the self-compensation seal, the step seal and the spring plug ring, unnecessary resistance and energy loss are reduced, the sealing performance is improved, and the service life of the water cooling cylinder is prolonged. Therefore, the service life of the oil cylinder is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of water-cooled oil cylinders, and specifically relates to a water-cooled oil cylinder. Background Art

[0002] A water-cooled oil cylinder mainly consists of a cylinder barrel, a piston, a piston rod, a sealing device, and a cooling system. By injecting pressurized oil into the oil cylinder, the piston is pushed to move, thereby achieving linear reciprocating motion or oscillating motion, providing power support for various mechanical actions. In the continuous casting process of molten steel, ensuring the stable and precise outflow of molten steel from the ladle and solidifying it into qualified billets is the core task. The control of the molten steel outlet of the ladle is extremely crucial. The water-cooled oil cylinder undertakes an important mission here. When the molten steel is in a high-temperature liquid state and flows from the ladle to the mold, it is necessary to strictly control the flow rate and velocity. Otherwise, it will lead to quality defects in the billets, such as internal cracks, segregation, and other problems. The water-cooled oil cylinder is installed in the control system near the molten steel outlet of the ladle. By precisely controlling the opening and closing degree of the outlet, the molten steel flow rate is adjusted. During the long-term operation of the entire continuous casting process, the high-temperature environment poses a great test to the equipment. Ordinary oil cylinders cannot withstand it. Due to its special cooling design, the water-cooled oil cylinder can operate stably, ensuring the continuous and uniform injection of molten steel into the mold, and guaranteeing the continuity and quality stability of billet production.

[0003] During the actual working process, due to the flow of hydraulic oil inside the oil cylinder, the friction between the piston and the cylinder body, and the action of external loads, a large amount of heat will be generated. If this heat cannot be dissipated in a timely and effective manner, the temperature inside the oil cylinder will rise rapidly. Excessive temperature will affect the performance of the hydraulic oil, seriously affecting the normal operation and safety of the equipment. There are certain defects in the sealing structure of existing water-cooled oil cylinders, and leakage is likely to occur. Poor sealing performance will not only cause hydraulic oil leakage, resulting in waste of resources and environmental pollution, but also allow external impurities to enter the inside of the oil cylinder, further exacerbating the wear of the oil cylinder parts and reducing the service life of the oil cylinder. Summary of the Invention

[0004] The purpose of the present invention is to provide a water-cooled oil cylinder that can improve the sealing performance of the oil cylinder, as well as the tensile strength and wear resistance of the oil cylinder.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A water-cooled oil cylinder, comprising: a cooling water housing; a cylinder body, both ends of the cylinder body being fixedly connected between the inner walls on both sides of the cooling water housing; two oil pipes, one end of each oil pipe passing through the top of the cylinder body; a mixing mechanism, the mixing mechanism being arranged on the cooling water housing and configured to evenly cool the oil cylinder; a cooling mechanism, the cooling mechanism being arranged on the cooling water housing and configured to cool the oil cylinder; a piston head, the piston head being slidably embedded between the inner walls of the cylinder body; a piston rod, the piston rod being fixedly embedded between the inner walls of the piston head; and a sealing mechanism, the sealing mechanism being arranged on the cylinder body and configured to improve the tensile strength and wear resistance of the oil cylinder and extend the service life of the oil cylinder.

[0007] Wherein, the mixing mechanism includes a rotating component and multiple groups of stirring components, the rotating component being arranged on the cooling water housing, and each group of stirring components being arranged on the rotating component.

[0008] Wherein, the rotating component includes a fixed box, a connecting gear, a connecting ring, a fixed motor and a fixed gear, one end of the fixed box being fixedly connected to the outer surface of one side of the cooling water housing, one end of the connecting ring being rotatably embedded in one end of the cooling water housing, the connecting gear being fixedly embedded between the inner walls of the connecting ring, the fixed motor being fixedly connected to the inner wall of one side of the fixed box, the fixed gear being fixedly sleeved on the output end of the fixed motor, and the fixed gear meshing with the connecting gear.

[0009] Wherein, each group of stirring components includes a connecting rod and multiple mixing rods, one end of the connecting rod being fixedly connected to the outer surface of one side of the connecting ring, and one end of each mixing rod being fixedly connected to the outer surface of one side of the connecting rod.

[0010] Wherein, the cooling mechanism includes a cooling component and a water spraying component, both the cooling component and the water spraying component being arranged on the cooling water housing.

[0011] Wherein, the water spraying component includes two connecting plates, multiple spray heads, a connecting pipe and a transmission pipe, each connecting plate being fixedly connected to the cooling water housing, one end of the connecting pipe passing through the top of the cooling water housing, and the outer surface of the connecting pipe being fixedly connected to the bottom of the connecting plate, one end of each spray head being fixedly connected to the connecting pipe, and one end of the transmission pipe being fixedly connected to the bottom of the cooling water housing.

[0012] Wherein, the cooling component includes multiple heat conducting plates, an installation pipe, a fixed pipe and a spiral pipe, one end of each of the multiple heat conducting plates being fixedly connected to the outer surface of the oil pipe, the spiral pipe being fixedly embedded between the multiple heat conducting plates, and one ends of the installation pipe and the fixed pipe both fixedly passing through the inner wall of the cooling water housing, and one ends of the installation pipe and the fixed pipe being respectively fixedly connected to both ends of the spiral pipe.

[0013] Among them, the sealing mechanism includes a guide tube, a dust ring, a Teflon guide and a split component. The guide tube is fixedly connected to the outer surface of one side of the cooling water shell, one end of the piston rod slides through one end of the guide tube, the dust ring and the Teflon guide are both sleeved on the outer surface of the guide tube, and the split component is arranged on the guide tube.

[0014] Among them, the split components include a split alloy sleeve, a self-compensating seal, a Step seal and a Van Seal ring. One end of the split alloy sleeve is fixedly connected to one end of the guide tube, and the self-compensating seal, the Step seal and the Van Seal ring are embedded between the inner walls of the split alloy sleeve.

[0015] A method for using a water-cooled oil cylinder comprises the following steps:

[0016] Step 1: Cooling the oil cylinder: The heat is conducted out through the heat conducting plate, and then low-temperature cooling water flows from the installation pipe through the spiral pipe and then out through the fixed pipe. This cycle repeats continuously to take away the heat and keep the oil cylinder temperature within the normal working range.

[0017] Step 2: Cool the oil cylinder evenly: spray cooling water through the connecting pipe and then through the nozzle, turn on the fixed motor, the fixed motor drives the fixed gear to rotate, the fixed gear and the connecting gear are meshed, the connecting gear drives the connecting ring to rotate, the connecting ring drives the connecting rod and the mixing rod to rotate, so that the cooling water cools the cylinder evenly;

[0018] Step 3. Optimize the oil cylinder: Optimize the structure of the water-cooled cylinder through the coordination of guide tubes, dust rings, Teflon guides, split alloy sleeves, self-compensating seals, step seals and pan seals, reduce unnecessary resistance and energy loss, improve the sealing structure to reduce leakage, improve sealing performance, improve the tensile strength and wear resistance of the oil cylinder, and thus extend the service life of the oil cylinder.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] (1) In the present invention, heat is conducted out through the heat conduction plate, and then low-temperature cooling water flows from the installation pipe through the spiral pipe and then out through the fixed pipe, and this cycle is repeated to continuously take away heat, so that the cylinder temperature is maintained within the normal working range. The cooling water is sprayed out through the connecting pipe and then through the nozzle, and the fixed motor is turned on. The fixed motor drives the fixed gear to rotate, and through the meshing of the fixed gear and the connecting gear, the connecting gear drives the connecting ring to rotate, and the connecting ring drives the connecting rod and the mixing rod to rotate, so that the cooling water evenly cools the cylinder body, effectively reducing the performance degradation of the cylinder caused by excessive temperature, ensuring the stable operation of the cylinder under various working conditions, and improving the working efficiency and reliability of the equipment.

[0021] (2) In the present invention, the structure of the water-cooled cylinder is optimized through the cooperation of a guide tube, a dust-proof ring, a Teflon guide, a split alloy sleeve, a self-compensating seal, a Struthers seal, and a pantograph seal, reducing unnecessary resistance and energy loss, improving the sealing structure to reduce leakage, enhancing the sealing performance, increasing the tensile strength and wear resistance of the oil cylinder, thereby extending the service life of the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the front orthographic perspective view of the present invention;

[0023] Figure 2 is the partial front orthographic perspective view of the present invention;

[0024] Figure 3 is the front orthographic partial cross-sectional view of the present invention;

[0025] Figure 4 is the partial front orthographic partial cross-sectional view of the present invention;

[0026] Figure 5 is of the present invention Figure 4 enlarged view of part A;

[0027] Figure 6 is the top orthographic partial cross-sectional view of the present invention;

[0028] Figure 7 is the partial top orthographic cross-sectional view of the present invention;

[0029] Figure 8 is the front orthographic perspective view of the mixing mechanism part of the present invention.

[0030] Reference numerals in the drawings: 1, cooling water housing; 2, mixing mechanism; 201, fixed box; 202, connecting gear; 203, connecting ring; 204, connecting rod; 205, mixing rod; 206, fixed motor; 207, fixed gear; 3, cooling mechanism; 301, connecting plate; 302, connecting pipe; 303, nozzle; 304, mounting pipe; 305, fixed pipe; 306, spiral pipe; 307, heat conducting plate; 308, transmission pipe; 4, oil pipe; 5, cylinder block; 6, piston rod; 7, piston head; 8, guide tube; 9, dust-proof ring; 10, Teflon guide; 11, split alloy sleeve; 12, Struthers seal; 13, pantograph seal; 14, self-compensating seal. DETAILED DESCRIPTION OF THE INVENTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] Refer to Figures 1-8:The embodiments of the present invention provide a technical solution:

[0033] A water-cooled oil cylinder, comprising: a cooling water outer shell 1; a cylinder block 5, both ends of the cylinder block 5 are fixedly connected between the inner walls on both sides of the cooling water outer shell 1; two oil pipes 4, one end of each oil pipe 4 penetrates through the top of the cylinder block 5; a mixing mechanism 2, the mixing mechanism 2 is arranged on the cooling water outer shell 1 and is used for evenly cooling the oil cylinder; a cooling mechanism 3, the cooling mechanism 3 is arranged on the cooling water outer shell 1 and is used for cooling the oil cylinder; a piston head 7, the piston head 7 is slidably embedded between the inner walls of the cylinder block 5; a piston rod 6, the piston rod 6 is fixedly embedded between the inner walls of the piston head 7; and a sealing mechanism, the sealing mechanism is arranged on the cylinder block 5 and is used for improving the tensile strength and wear resistance of the oil cylinder and extending the service life of the oil cylinder.

[0034] In this embodiment: one end of each of the two oil pipes 4 is fixedly connected to an external oil inlet device, which can transmit hydraulic oil into the cylinder block 5. The mixing mechanism 2 is used to increase the fluidity of the cooling water and evenly cool the oil cylinder. The cooling mechanism 3 is used to cool the oil cylinder. Through the action of the hydraulic oil, the piston rod 6 can drive the piston head 7 to move in the cylinder block 5. The sealing mechanism is used to increase the sealing performance, improve the tensile strength and wear resistance of the oil cylinder, thereby extending the service life of the oil cylinder.

[0035] In a specific embodiment, the mixing mechanism 2 includes a rotating component and multiple groups of stirring components. The rotating component is arranged on the cooling water outer shell 1, and each group of stirring components is arranged on the rotating component.

[0036] In this embodiment: the arrangement of the rotating component can adjust the agitation of multiple groups of stirring components, increase the fluidity of the cooling water, and evenly cool the oil cylinder.

[0037] In a specific embodiment, the rotating component includes a fixed box 201, a connecting gear 202, a connecting ring 203, a fixed motor 206 and a fixed gear 207. One end of the fixed box 201 is fixedly connected to the outer surface of one side of the cooling water outer shell 1. One end of the connecting ring 203 is rotatably embedded in one end of the cooling water outer shell 1. The connecting gear 202 is fixedly embedded between the inner walls of the connecting ring 203. The fixed motor 206 is fixedly connected to the inner wall of one side of the fixed box 201. The fixed gear 207 is fixedly sleeved on the output end of the fixed motor 206, and the fixed gear 207 meshes with the connecting gear 202.

[0038] In this embodiment: The fixed motor 206 can rotate forward and backward. When rotating, it drives the stirring component to rotate to a certain angle and then rotate in the reverse direction. When the fixed motor 206 is turned on, the fixed motor 206 drives the fixed gear 207 to rotate. Through the meshing of the fixed gear 207 and the connecting gear 202, the connecting gear 202 drives the connecting ring 203 to rotate, and the connecting ring 203 drives the stirring component to rotate. The principle structure of the fixed motor 206 belongs to the common knowledge of those skilled in the art and will not be introduced in detail here. Its model can be selected according to the actual usage situation.

[0039] In a specific embodiment, each stirring component includes a connecting rod 204 and a plurality of mixing rods 205. One end of the connecting rod 204 is fixedly connected to the outer surface of one side of the connecting ring 203, and one end of each mixing rod 205 is fixedly connected to the outer surface of one side of the connecting rod 204.

[0040] In this embodiment: With the cooperation of the connecting rod 204 and the plurality of mixing rods 205 in the rotating component, the connecting ring 203 drives the connecting rod 204 and the mixing rods 205 to rotate, increasing the fluidity of the cooling water and enabling the cooling water to evenly cool the cylinder block 5.

[0041] In a specific embodiment, the cooling mechanism 3 includes a cooling component and a water spraying component, and both the cooling component and the water spraying component are arranged on the cooling water housing 1.

[0042] In this embodiment: The cooling component is provided for transporting the cooling water, and the water spraying component is provided for enhancing the cooling effect.

[0043] In a specific embodiment, the water spraying component includes two connecting plates 301, a plurality of nozzles 303, a connecting pipe 302, and a transmission pipe 308. Each connecting plate 301 is fixedly connected to the cooling water housing 1. One end of the connecting pipe 302 penetrates through the top of the cooling water housing 1, and the outer surface of the connecting pipe 302 is fixedly connected to the bottom of the connecting plate 301. One end of each nozzle 303 is fixedly connected to the connecting pipe 302, and one end of the transmission pipe 308 is fixedly connected to the bottom of the cooling water housing 1.

[0044] In this embodiment: The two connecting plates 301 are used to support the connecting pipe 302. One end of the connecting pipe 302 is fixedly connected to the output end of an external cooling device, and one end of the transmission pipe 308 is fixedly connected to the input end of the external cooling device. The nozzles 303 can evenly spray the cooling water onto the cooling component.

[0045] In a specific embodiment, the cooling component includes a plurality of heat conducting plates 307, a mounting pipe 304, a fixing pipe 305, and a spiral pipe 306. One ends of the plurality of heat conducting plates 307 are fixedly connected to the outer surface of the oil pipe 4. The spiral pipe 306 is fixedly embedded between the plurality of heat conducting plates 307. One ends of the mounting pipe 304 and the fixing pipe 305 fixedly penetrate through the inner wall of the cooling water housing 1, and one ends of the mounting pipe 304 and the fixing pipe 305 are fixedly connected to two ends of the spiral pipe 306 respectively.

[0046] In this embodiment: The heat conducting plates 307 are provided to conduct heat. One end of the mounting pipe 304 is fixedly connected to the input end of an external cooling device. One end of the fixing pipe 305 is fixedly connected to the input end of the external cooling device. The spiral pipe 306 increases the contact area with the heat conducting plates 307, so as to better cool the oil cylinder.

[0047] In a specific embodiment, the sealing mechanism includes a guide pipe 8, a dust-proof ring 9, a Teflon guide 10, and a split component. The guide pipe 8 is fixedly connected to the outer surface of one side of the cooling water housing 1. One end of the piston rod 6 slidably penetrates through one end of the guide pipe 8. The dust-proof ring 9 and the Teflon guide 10 are both sleeved on the outer surface of the guide pipe 8. The split component is arranged on the guide pipe 8.

[0048] In this embodiment: The guide pipe 8 is provided to control the fluid flow direction and flow rate. By adjusting the flow control mechanism, the flow path and speed of the fluid passing through the pipeline are modified to ensure that the cooling water flows along a predetermined path, realizing the effective transportation, distribution, and treatment of the fluid, improving the cooling efficiency, reducing energy loss. The dust-proof ring 9 is provided to remove the dirt attached to the outer surface of the reciprocating piston rod 6 exposed outside the cylinder, prevent external dirt from entering the inside of the sealing mechanism, protect the oil cylinder piston from being damaged by dust, reduce equipment wear, and extend the service life of the oil cylinder. The Teflon guide 10 has self-lubricating property and excellent wear resistance, can reduce the friction between the piston rod 6 and the guiding component, improve the movement stability and service life of the oil cylinder, and reduce energy consumption at the same time.

[0049] In a specific embodiment, the split component includes a split alloy sleeve 11, a self-compensating seal 14, a Struthers seal 12, and a pantograph seal 13. One end of the split alloy sleeve 11 is fixedly connected to one end of the guide pipe 8. The self-compensating seal 14, the Struthers seal 12, and the pantograph seal 13 are embedded between the inner walls of the split alloy sleeve 11.

[0050] In this embodiment: The split alloy sleeve 11 provides support and guidance, and can withstand a certain load at the same time. The split design facilitates installation and maintenance. The alloy material has high strength and wear resistance, and can withstand the lateral force and axial force generated during the operation of the oil cylinder, ensuring the linear motion accuracy of the piston rod 6. The self-compensating seal 14 can automatically compensate for the seal gap to prevent leakage. During the operation of the oil cylinder, due to wear or temperature changes, the seal gap may change. The self-compensating seal 14 can automatically adjust its shape or position to maintain an effective seal, reduce the leakage of hydraulic oil, and improve the sealing performance and reliability of the oil cylinder. The sterling seal 12 has strong impact resistance, strong extrusion resistance and sliding performance. In a water-cooled oil cylinder, it can effectively prevent hydraulic oil from leaking from the gap between the piston rod 6 and the cylinder barrel, ensuring the pressure stability and normal operation of the system. The lip seal 13 can effectively seal the ring. It has excellent wear resistance, corrosion resistance and temperature resistance, and can maintain long-term sealing performance in a harsh working environment. In a water-cooled oil cylinder, the lip seal 13 can ensure that hydraulic oil does not leak, and at the same time resist the erosion of cooling water and other media, ensuring the safe operation of the oil cylinder.

[0051] The following details the usage method of a water-cooled oil cylinder provided by an embodiment of the present invention. The usage method includes the following steps:

[0052] Step 1, cool the oil cylinder: Export the heat through the heat conduction plate 307, and then the low-temperature cooling water flows in from the installation pipe 304, passes through the spiral pipe 306, and then flows out through the fixed pipe 305. In this way, it circulates continuously, continuously taking away the heat and keeping the temperature of the oil cylinder within the normal working range.

[0053] Step 2, evenly cool the oil cylinder: Spray the cooling water through the connecting pipe 302 and then through the nozzle 303. Turn on the fixed motor 206, and the fixed motor 206 drives the fixed gear 207 to rotate. Through the meshing of the fixed gear 207 and the connecting gear 202, the connecting gear 202 drives the connecting ring 203 to rotate, and the connecting ring 203 drives the connecting rod 204 and the mixing rod 205 to rotate, so that the cooling water evenly cools the cylinder block 5.

[0054] Step 3, optimize the oil cylinder: Optimize the structure of the water-cooled cylinder through the cooperation of the guide pipe 8, the dust-proof ring 9, the Teflon guide 10, the split alloy sleeve 11, the self-compensating seal 14, the sterling seal 12 and the lip seal 13, reduce unnecessary resistance and energy loss, improve the sealing structure to reduce leakage, improve the sealing performance, improve the tensile strength and wear resistance of the oil cylinder, so as to extend the service life of the oil cylinder.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water-cooled oil cylinder, characterized in that, Comprising: A cooling water housing (1); A cylinder block (5), both ends of the cylinder block (5) being fixedly connected between the inner walls on both sides of the cooling water housing (1); Two oil pipes (4), one end of each oil pipe (4) passing through the top of the cylinder block (5); A mixing mechanism (2), arranged on the cooling water housing (1), for evenly cooling the oil cylinder; A cooling mechanism (3), arranged on the cooling water housing (1), for cooling the oil cylinder; A piston head (7), slidably embedded between the inner walls of the cylinder block (5); A piston rod (6), fixedly embedded between the inner walls of the piston head (7); and A sealing mechanism, arranged on the cylinder block (5), for enhancing the tensile strength and wear resistance of the oil cylinder and extending the service life of the oil cylinder.

2. The water-cooled oil cylinder according to claim 1, wherein: The mixing mechanism (2) includes a rotating component and multiple groups of stirring components, the rotating component being arranged on the cooling water housing (1), and each group of stirring components being arranged on the rotating component.

3. The water-cooled oil cylinder according to claim 2, characterized in that: The rotating component includes a fixed box (201), a connecting gear (202), a connecting ring (203), a fixed motor (206), and a fixed gear (207). One end of the fixed box (201) is fixedly connected to the outer surface of one side of the cooling water housing (1), one end of the connecting ring (203) is rotatably embedded at one end of the cooling water housing (1), the connecting gear (202) is fixedly embedded between the inner walls of the connecting ring (203), the fixed motor (206) is fixedly connected to the inner wall of one side of the fixed box (201), the fixed gear (207) is fixedly sleeved on the output end of the fixed motor (206), and the fixed gear (207) meshes with the connecting gear (202).

4. The water-cooled oil cylinder according to claim 3, wherein: Each group of stirring components includes a connecting rod (204) and multiple mixing rods (205). One end of the connecting rod (204) is fixedly connected to the outer surface of one side of the connecting ring (203), and one end of each mixing rod (205) is fixedly connected to the outer surface of one side of the connecting rod (204).

5. The water-cooled oil cylinder according to claim 4, characterized in that: The cooling mechanism (3) includes a cooling component and a water spraying component, both the cooling component and the water spraying component being arranged on the cooling water housing (1).

6. The water-cooled oil cylinder according to claim 5, characterized in that: The water spraying component includes two connecting plates (301), multiple spray heads (303), a connecting pipe (302), and a transmission pipe (308). Each connecting plate (301) is fixedly connected to the cooling water housing (1), one end of the connecting pipe (302) passes through the top of the cooling water housing (1), and the outer surface of the connecting pipe (302) is fixedly connected to the bottom of the connecting plate (301). One end of each spray head (303) is fixedly connected to the connecting pipe (302), and one end of the transmission pipe (308) is fixedly connected to the bottom of the cooling water housing (1).

7. The water-cooled oil cylinder according to claim 6, wherein: The cooling component comprises a plurality of heat conducting plates (307), a mounting tube (304), a fixed tube (305) and a spiral tube (306); one end of each of the plurality of heat conducting plates (307) is fixedly connected to the outer surface of the oil pipe (4); the spiral tube (306) is fixedly embedded between the plurality of heat conducting plates (307); one end of each of the mounting tube (304) and the fixed tube (305) is fixedly passed through the inner wall of the cooling water shell (1); and one end of each of the mounting tube (304) and the fixed tube (305) is fixedly connected to both ends of the spiral tube (306) respectively.

8. The water-cooled oil cylinder according to claim 7, characterized in that: The sealing mechanism comprises a guide tube (8), a dust ring (9), a Teflon guide (10) and a split component. The guide tube (8) is fixedly connected to the outer surface of one side of the cooling water housing (1). One end of the piston rod (6) slides through one end of the guide tube (8). The dust ring (9) and the Teflon guide (10) are both sleeved on the outer surface of the guide tube (8). The split component is arranged on the guide tube (8).

9. The water-cooled oil cylinder according to claim 8, wherein: The split components include a split alloy sleeve (11), a self-compensating seal (14), a step seal (12) and a varisial ring (13); one end of the split alloy sleeve (11) is fixedly connected to one end of the guide tube (8); and the self-compensating seal (14), the step seal (12) and the varisial ring (13) are embedded between the inner walls of the split alloy sleeve (11).

10. A method for using a water-cooled oil cylinder, which is applied to a water-cooled oil cylinder as described in claim 9, and is characterized in that, The following steps are involved: S1, cooling the oil cylinder: heat is conducted away through the heat conducting plate (307), and then low-temperature cooling water flows from the mounting pipe (304) through the spiral pipe (306) and then flows out through the fixed pipe (305), and this cycle is repeated to continuously take away heat, so that the oil cylinder temperature is maintained within the normal working range; S2, uniformly cooling the oil cylinder: cooling water is sprayed out through the connecting pipe (302) and then through the nozzle (303), the fixed motor (206) is turned on, the fixed motor (206) drives the fixed gear (207) to rotate, and the fixed gear (207) and the connecting gear (202) are meshed, so that the connecting gear (202) drives the connecting ring (203) to rotate, and the connecting ring (203) drives the connecting rod (204) and the mixing rod (205) to rotate, so that the cooling water uniformly cools the cylinder body (5); S3. Optimize the oil cylinder: By coordinating the guide tube (8), dust ring (9), Teflon guide (10), split alloy sleeve (11), self-compensating seal (14), step seal (12) and universal seal (13), the structure of the water-cooled cylinder is optimized to reduce unnecessary resistance and energy loss, improve the sealing structure to reduce leakage, improve the sealing performance, and improve the tensile strength and wear resistance of the oil cylinder, thereby extending the service life of the oil cylinder.

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