Liquid-cooled fluid polishing hydraulic cylinder

Abstract

The utility model relates to the field of fluid polishing equipment, in particular to a liquid-cooled fluid polishing hydraulic cylinder which comprises a cylinder body, a piston is arranged in the cylinder body, one end of the cylinder body is connected with a driving device, and the driving device is connected with the piston and can drive the piston to reciprocate in the cylinder body. A connecting flange is arranged at the end, away from the driving device, of the cylinder body, the cylinder body is sleeved with an outer cylinder, and the outer cylinder is in clearance connection with the cylinder body. One end of the outer cylinder is connected with the connecting flange, the other end of the outer cylinder is connected with a fixing ring arranged on the driving device in a sleeving mode, the outer cylinder, the cylinder body, the fixing ring and the connecting flange jointly form a closed cavity, and the cavity is at least provided with a first guide pipe and a second guide pipe which are communicated with the outside. In the working process of fluid polishing, cooling water is in a flowing state all the time, so that water in the cavity flows invariably and exchanges heat with a fluid medium in the cylinder body while flowing, and cooling of the fluid medium is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid polishing equipment, in particular to a liquid-cooled fluid polishing hydraulic cylinder. Background Art

[0002] During precision machining, surface damage such as tool marks and cracks can occur after turning, milling, and grinding. Tool wear can also affect the workpiece's surface properties, necessitating polishing to eliminate these surface damages. Traditional polishing methods are inefficient for complex workpieces, making them unsuitable for mass production. However, fluid polishing can achieve the required surface quality at a lower cost, making it suitable for mass production.

[0003] In existing fluid polishing processes, the fluid pressure and flow rate are both high. During prolonged, continuous polishing, the fluid temperature can rise dramatically, affecting workpiece performance. This temperature increase also reduces friction between the fluid and the workpiece, leading to uneven polishing and inefficient polishing. Therefore, how to prevent or minimize abnormal temperature increases during operation is a challenge for those skilled in the art. Utility Model Content

[0004] The utility model aims to provide a liquid-cooled fluid polishing hydraulic cylinder to solve the problem in the prior art that the fluid medium heats up quickly after long-term use.

[0005] The technical solution of the utility model is: a liquid-cooled fluid polishing hydraulic cylinder, comprising a cylinder body, a piston is arranged in the cylinder body, one end of the cylinder body is connected to a driving device, the driving device is connected to the piston and can drive the piston to reciprocate in the cylinder body;

[0006] A connecting flange is provided at one end of the cylinder body away from the driving device, and the cylinder body is provided with an outer cylinder, and the outer cylinder and the cylinder body are gap-connected; one end of the outer cylinder is connected to the connecting flange, and the other end is connected to a fixing ring provided on the driving device, and the outer cylinder, cylinder body, fixing ring and connecting flange together constitute a closed cavity, and the cavity is provided with at least a first conduit and a second conduit to communicate with the outside world.

[0007] Preferably, at least a portion of the connecting flange is sleeved on the outer wall of the cylinder body and is sealed with the outer wall of the cylinder body; at least a portion of the end of the connecting flange connected to the outer cylinder is sleeved on the outer wall of the outer cylinder and is sealed with the outer wall of the outer cylinder.

[0008] Preferably, the inner ring of the fixing ring is sealedly connected to the driving device, and the end of the fixing ring close to the outer cylinder is sealedly connected to the outer cylinder.

[0009] Preferably, the first conduit and the second conduit are arranged to pass through the fixing ring and are both connected to the heat exchange device. Cold water enters the cavity through the first conduit and is discharged through the second conduit.

[0010] Preferably, the first conduit and the second conduit are both arranged on the outer cylinder, and are both arranged to pass through the outer cylinder.

[0011] Preferably, the first conduit is arranged at one end close to the driving device, the second conduit is arranged at one end close to the connecting flange, and the first conduit and the second conduit are respectively arranged on opposite sides of the outer cylinder.

[0012] Preferably, a first sealing ring is provided at one end of the cylinder body close to the fixing ring, and when the fixing ring is connected to the cylinder body, the end portion thereof presses against the first sealing ring.

[0013] Preferably, a sealing ring is embedded in the inner ring of the fixing ring, the sealing ring protrudes from the fixing ring and is embedded in the inner ring of the cylinder body at the same time, and the sealing ring is arranged at the end of the piston away from the connecting flange.

[0014] Preferably, the outer ring of the sealing ring is provided with a second sealing ring and a third sealing ring, the second sealing ring is in contact with the inner wall of the fixing ring, and the third sealing ring is in contact with the inner wall of the cylinder body.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) During the working process of fluid polishing, the cooling water is always in a flowing state, so that the water in the cavity flows constantly, and while flowing, heat is exchanged with the fluid medium in the cylinder to achieve cooling of the fluid medium;

[0017] (2) By providing a sealing ring, and connecting the sealing ring on the sealing ring to the fixing ring and the cylinder body respectively, the sealing performance of the connection between the fixing ring and the cylinder body is further increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the structure of the liquid-cooled fluid polishing hydraulic cylinder of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0021] Figure 3 This is a structural schematic diagram of other embodiments of the liquid-cooled fluid polishing hydraulic cylinder described in the present utility model.

[0022] Among them: cylinder body 1, outer cylinder 2, connecting flange 3, driving device 4, fixing ring 5, first sealing ring 51, cavity 6, first conduit 61, second conduit 62, sealing ring 7, second sealing ring 71, third sealing ring 72. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0024] like Figure 1-Figure 3 As shown, the utility model is applied to fluid polishing equipment, in which a hydraulic cylinder is provided. The fluid medium flows into the workpiece to be polished through the extrusion of the hydraulic cylinder, and the surface polishing is achieved by friction with the surface of the workpiece due to the flow in the workpiece. The fluid medium will generate a lot of heat after repeated extrusion and flow and friction with the parts, causing the temperature of the fluid medium to rise, affecting the performance of the workpiece, while reducing the friction between the workpiece and the workpiece, resulting in uneven polishing and low efficiency. Therefore, a liquid cooling device is provided in the utility model. When the fluid medium flows into the hydraulic cylinder, the flow of the coolant on the surface of the cylinder body realizes heat exchange with the fluid medium, thereby achieving the purpose of reducing the temperature of the fluid medium. Specifically:

[0025] A liquid-cooled fluid polishing hydraulic cylinder includes a cylinder body 1, a piston is arranged in the cylinder body 1, and one end of the cylinder body 1 is connected to a driving device; the end of the cylinder body 1 away from the driving device is connected to the workpiece or the fixture on the workpiece through a connecting flange. When the driving device drives the piston to move in the cylinder body 1, it can squeeze the fluid medium in the cylinder body 1 and squeeze it into the workpiece to achieve polishing of the workpiece.

[0026] The cylinder body 1 is fitted with an outer cylinder 2, which is loosely connected to the cylinder body 1. One end of the outer cylinder 2 is connected to a connecting flange 3, which at least partially overlies the outer wall of the cylinder body 1 and forms a sealed connection thereto. The end of the connecting flange 3 that connects to the outer cylinder 2 also at least partially overlies the outer wall of the outer cylinder 2 and forms a sealed connection thereto. The other end of the outer cylinder 2 is connected to a retaining ring 5, which is fitted around a drive unit 4. The inner ring of the retaining ring 5 is sealedly connected to the drive unit 4, and the end of the retaining ring 5 closest to the outer cylinder 2 is also sealedly connected to the outer cylinder 2.

[0027] The outer cylinder 2, the cylinder body 1, the fixing ring 5 and the connecting flange 3 together form a closed cavity 6. The cavity 6 is provided with at least a first conduit 61 and a second conduit 62 for communicating with the outside.

[0028] In this embodiment, the first conduit 61 and the second conduit 62 are disposed through the fixing ring 5. In other embodiments, the first conduit 61 and the second conduit 62 are both disposed on the outer cylinder 2 and extend through the outer cylinder 2. The first conduit 61 is disposed at the end proximal to the drive device 4, and the second conduit 62 is disposed at the end proximal to the connecting flange 3. The first conduit 61 and the second conduit 62 are disposed on opposite sides of the outer cylinder 2. The first conduit 61 and the second conduit 62 are both connected to the heat exchanger. During operation, cooling water enters the cavity 6 through the first conduit 61, exchanges heat with the fluid medium within the cavity 6, and is then discharged through the second conduit 62 to the heat exchanger.

[0029] To further ensure the sealing of cavity 6, a first sealing ring 51 is provided on the end of cylinder body 1 near retaining ring 5. When retaining ring 5 is connected to cylinder body 1, its end presses against first sealing ring 51. A sealing ring 7 is embedded within the inner ring of retaining ring 5. This sealing ring 7 protrudes from retaining ring 5 and is embedded within the inner ring of cylinder body 1. Sealing ring 7 is located on the end of the piston away from connecting flange 3. A second sealing ring 71 and a third sealing ring 72 are provided on the outer ring of sealing ring 7. The second sealing ring 71 contacts the inner wall of retaining ring 5, and the third sealing ring 72 contacts the inner wall of cylinder body 1.

[0030] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A liquid-cooled fluid polishing hydraulic cylinder, characterized in that: It includes a cylinder body, a piston is arranged in the cylinder body, one end of the cylinder body is connected to a driving device, the driving device is connected to the piston and can drive the piston to reciprocate in the cylinder body; A connecting flange is provided at one end of the cylinder body away from the driving device, and the cylinder body is provided with an outer cylinder, and the outer cylinder and the cylinder body are gap-connected; one end of the outer cylinder is connected to the connecting flange, and the other end is connected to a fixing ring provided on the driving device, and the outer cylinder, cylinder body, fixing ring and connecting flange together constitute a closed cavity, and the cavity is provided with at least a first conduit and a second conduit to communicate with the outside world.

2. The liquid-cooled fluid polishing hydraulic cylinder according to claim 1, characterized in that: At least a portion of the connecting flange is sleeved on the outer wall of the cylinder body and is sealed with the outer wall of the cylinder body; at least a portion of the end of the connecting flange connected to the outer cylinder is sleeved on the outer wall of the outer cylinder and is sealed with the outer wall of the outer cylinder.

3. The liquid-cooled fluid polishing hydraulic cylinder according to claim 1, characterized in that: The inner ring of the fixing ring is sealedly connected to the driving device, and the end of the fixing ring close to the outer cylinder is sealedly connected to the outer cylinder.

4. The liquid-cooled fluid polishing hydraulic cylinder according to claim 3, characterized in that: The first conduit and the second conduit are arranged to pass through the fixing ring and are both connected to the heat exchange device. Cold water enters the cavity through the first conduit and is discharged through the second conduit.

5. The liquid-cooled fluid polishing hydraulic cylinder according to claim 1, characterized in that: The first conduit and the second conduit are both arranged on the outer cylinder and are both arranged to pass through the outer cylinder.

6. The liquid-cooled fluid polishing hydraulic cylinder according to claim 5, characterized in that: The first conduit is arranged at one end close to the driving device, the second conduit is arranged at one end close to the connecting flange, and the first conduit and the second conduit are respectively arranged at opposite sides of the outer cylinder.

7. The liquid-cooled fluid polishing hydraulic cylinder according to claim 3, characterized in that: A first sealing ring is provided at one end of the cylinder body close to the fixing ring. When the fixing ring is connected to the cylinder body, the end portion thereof presses against the first sealing ring.

8. The liquid-cooled fluid polishing hydraulic cylinder according to claim 7, characterized in that: The inner ring of the fixing ring is embedded with a sealing ring, which protrudes from the fixing ring and is embedded in the inner ring of the cylinder body. The sealing ring is arranged at one end of the piston away from the connecting flange.

9. The liquid-cooled fluid polishing hydraulic cylinder according to claim 8, characterized in that: The outer ring of the sealing ring is provided with a second sealing ring and a third sealing ring. The second sealing ring is in contact with the inner wall of the fixing ring, and the third sealing ring is in contact with the inner wall of the cylinder body.

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