Anti-rotation piston sealing structure

Abstract

The utility model relates to the technical field of pistons, in particular to an anti-rotation piston sealing structure which comprises a piston body. A connecting groove is formed in the outer wall of the piston body, two bearing pieces are arranged on the outer wall of the connecting groove, and semi-sealing rings are installed on the outer walls of the two bearing pieces. Limiting strips are fixed to the inner walls of the two bearing pieces; a limiting groove is formed in the outer wall of the connecting groove; the limiting strips are located in the limiting grooves. Positioning grooves are formed in the tops of the two bearing pieces, and positioning pieces are arranged in the positioning grooves; the outer wall of the connecting groove is connected with a fixing ring; according to the piston, the two bearing pieces or the two semi-sealing rings can be prevented from rotating, so that the working efficiency of the piston body is improved, the connecting stability of the piston body and an external connecting piece is also improved, and the sealing performance of the piston body is improved. And the two semi-sealing rings and the auxiliary sealing ring can be disassembled and maintained conveniently, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pistons, in particular to an anti-rotation piston sealing structure. Background Art

[0002] The core function of a hydraulic press is to transmit pressure through liquid (usually oil) to complete various processes. It mainly consists of three parts: the machine (host), the power system and the hydraulic control system. The working principle of a hydraulic press involves the oil pump delivering hydraulic oil to the integrated cartridge valve block, and then distributing the oil to the corresponding chamber of the cylinder through the one-way valve and the relief valve, thereby driving the cylinder to move under the action of high-pressure oil. This design enables the hydraulic press to perform a variety of processes such as forging, bending, and flanging. In addition, hydraulic presses have a wide range of applications, including aerospace, nuclear power, petrochemical, automotive parts and other manufacturing industries. Different types of hydraulic presses are suitable for different industrial needs, such as four-column hydraulic presses, frame hydraulic presses, etc. They can replace molds to adapt to the processing of different products, showing their versatility. The advantages of hydraulic presses are their strong power and control accuracy, especially suitable for the processing of center-loaded parts. In general, hydraulic press is an indispensable and important equipment in modern manufacturing industry. It transfers energy through liquid medium to realize precise processing and forming of metal and other materials. The sealing piston is an important part of hydraulic press. However, the existing sealing piston is easy to rotate during operation, which affects the working efficiency of the sealing piston and the stability of the connection between the sealing piston and the connecting parts.

[0003] Furthermore, the sealing ring of the existing sealing piston is not easy to replace and disassemble, and has low practicality.

[0004] To this end, an anti-rotation piston sealing structure is proposed. Utility Model Content

[0005] The utility model aims to provide an anti-rotation piston sealing structure.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An anti-rotation piston sealing structure, comprising:

[0008] Piston body;

[0009] The outer wall of the piston body is provided with a connecting groove, the outer wall of the connecting groove is provided with two receiving parts, and the outer walls of the two receiving parts are both provided with semi-sealing rings;

[0010] The inner walls of the two receiving parts are both fixed with limit strips;

[0011] The outer wall of the connecting groove is provided with a limiting groove;

[0012] The limiting strip is located inside the limiting groove;

[0013] The tops of the two receiving parts are both provided with positioning grooves, and positioning parts are arranged in the positioning grooves;

[0014] The outer wall of the connecting groove is connected with a fixing ring;

[0015] The positioning piece is connected to the bottom of the fixing ring.

[0016] Preferably, an auxiliary sealing ring is installed on the outer wall of the fixing ring.

[0017] Preferably, the outer wall of the connecting groove is provided with an external thread, and the inner wall of the fixing ring is provided with an internal thread;

[0018] The fixing ring is threadably connected to the outer wall of the connecting groove through internal threads and external threads.

[0019] Preferably, the positioning member is composed of a positioning block and a connecting block, and the positioning block is fixed at the bottom of the connecting block.

[0020] Preferably, the positioning block is clamped inside the positioning groove.

[0021] Preferably, an annular slide groove is provided at the bottom of the fixing ring, and a sliding block is installed in the annular slide groove;

[0022] The positioning block is fixed at the bottom of the sliding block.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The utility model fixes limiting strips on the inner walls of the two receiving parts, and provides limiting grooves on the outer wall of the connecting groove, and the limiting strips are located inside the limiting grooves. Therefore, under the cooperation of the limiting strips and the limiting grooves, the two receiving parts or the two half sealing rings can be prevented from rotating, thereby improving the working efficiency of the piston body and the connection stability between the piston body and the external connecting parts.

[0025] Since the fixing ring is threadedly connected to the outer wall of the connection groove through the internal thread and the external thread, the fixing ring can be disassembled by rotating the fixing ring in the opposite direction along the thread connection direction of the internal thread and the external thread. Since the auxiliary sealing ring is installed on the outer wall of the fixing ring, the auxiliary sealing ring can be disassembled.

[0026] When the fixing ring is disassembled, the positioning block will be disengaged from the positioning groove, and the two half sealing rings can be disassembled at this time;

[0027] In summary, the utility model can prevent the two receiving parts or the two half sealing rings from rotating, thereby improving the working efficiency of the piston body, and also improving the connection stability between the piston body and the external connecting parts, and facilitates the disassembly and maintenance of the two half sealing rings and the auxiliary sealing ring, and has high practicality.

[0028] The utility model is provided with two half sealing rings and an auxiliary sealing ring, and the sealing performance of the piston body is greatly improved under the cooperation of the two half sealing rings and the auxiliary sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a partial structural schematic diagram of the utility model;

[0031] Figure 3 It is a schematic diagram of the structure of two half sealing rings in the utility model;

[0032] Figure 4 It is a schematic diagram of the annular slide groove and the sliding block structure in the utility model.

[0033] In the figure: 1. Piston body; 2. Connecting groove; 3. Receiver; 4. Semi-sealing ring; 5. Limiting groove; 6. Limiting strip; 7. Positioning groove; 8. Positioning block; 9. Connecting block; 10. Fixing ring; 11. Auxiliary sealing ring; 12. Annular slide groove; 13. Slider. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Embodiment 1:

[0037] See also Figure 1-3 The utility model provides a technical solution: To achieve the above-mentioned purpose, the utility model provides the following technical solution: An anti-rotation piston sealing structure, comprising: a piston body 1; a connecting groove 2 is provided on the outer wall of the piston body 1, and two receiving parts 3 are provided on the outer wall of the connecting groove 2, and semi-sealing rings 4 are installed on the outer walls of the two receiving parts 3; limiting strips 6 are fixed on the inner walls of the two receiving parts 3; a limiting groove 5 is provided on the outer wall of the connecting groove 2; the limiting strip 6 is located inside the limiting groove 5.

[0038] Specifically, the utility model fixes limiting strips 6 on the inner walls of the two receiving parts 3, and opens limiting grooves 5 on the outer wall of the connecting groove 2, and the limiting strips 6 are located inside the limiting grooves 5. Therefore, with the cooperation of the limiting strips 6 and the limiting grooves 5, the two receiving parts 3 or the two semi-sealing rings 4 can be prevented from rotating, thereby improving the working efficiency of the piston body 1 and the stability of the connection between the piston body 1 and the external connecting parts.

[0039] Embodiment 2:

[0040] See also Figure 1-4 The utility model provides a technical solution: an anti-rotation piston sealing structure, the tops of the two receiving parts 3 are each provided with a positioning groove 7, and a positioning piece is arranged in the positioning groove 7; the outer wall of the connecting groove 2 is connected to a fixing ring 10; the positioning piece is connected to the bottom of the fixing ring 10, and an auxiliary sealing ring 11 is installed on the outer wall of the fixing ring 10, the outer wall of the connecting groove 2 is provided with an external thread, and the inner wall of the fixing ring 10 is provided with an internal thread; the fixing ring 10 is threadedly connected to the outer wall of the connecting groove 2 by means of an internal thread and an external thread, the positioning piece is composed of a positioning block 8 and a connecting block 9, the positioning block 8 is fixed at the bottom of the connecting block 9, the positioning block 8 is clamped in the positioning groove 7, an annular slide groove 12 is provided at the bottom of the fixing ring 10, and a slider 13 is installed in the annular slide groove 12; the positioning block 8 is fixed at the bottom of the slider 13.

[0041] Specifically, since the fixing ring 10 is threadedly connected to the outer wall of the connecting groove 2 by means of an internal thread and an external thread, the fixing ring 10 can be disassembled by rotating the fixing ring 10 in the opposite direction along the threaded connection direction of the internal thread and the external thread. Since the auxiliary sealing ring 11 is installed on the outer wall of the fixing ring 10, the auxiliary sealing ring 11 can be disassembled.

[0042] When the fixing ring 10 is disassembled, the positioning block 8 will be disengaged from the positioning groove 7, and the two half sealing rings 4 can be disassembled at this time;

[0043] In summary, the utility model can prevent the two receiving parts 3 or the two half sealing rings 4 from rotating, thereby improving the working efficiency of the piston body 1, and also improving the connection stability between the piston body 1 and the external connecting parts, and facilitates the disassembly and maintenance of the two half sealing rings 4 and the auxiliary sealing ring 11, and has high practicality.

[0044] The utility model is provided with two half sealing rings 4 and an auxiliary sealing ring 11 , and the sealing performance of the piston body 1 is greatly improved under the cooperation of the two half sealing rings 4 and the auxiliary sealing ring 11 .

[0045] Working principle:

[0046] First, by fixing the limiting strips 6 on the inner walls of the two receiving parts 3, the limiting grooves 5 are provided on the outer wall of the connecting groove 2, and the limiting strips 6 are located inside the limiting grooves 5, so that the two receiving parts 3 or the two half sealing rings 4 can be prevented from rotating under the cooperation of the limiting strips 6 and the limiting grooves 5, thereby improving the working efficiency of the piston body 1 and the connection stability between the piston body 1 and the external connecting parts;

[0047] Since the fixing ring 10 is threadedly connected to the outer wall of the connection groove 2 by means of internal threads and external threads, the fixing ring 10 can be disassembled by rotating the fixing ring 10 in the opposite direction along the threaded connection direction of the internal threads and the external threads. Since the auxiliary sealing ring 11 is installed on the outer wall of the fixing ring 10, the auxiliary sealing ring 11 can be disassembled.

[0048] When the fixing ring 10 is disassembled, the positioning block 8 will be disengaged from the positioning groove 7, and the two half sealing rings 4 can be disassembled at this time;

[0049] Secondly, by providing two half sealing rings 4 and the auxiliary sealing ring 11 , the sealing performance of the piston body 1 is greatly improved under the cooperation of the two half sealing rings 4 and the auxiliary sealing ring 11 .

[0050] In the description of the present invention, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0051] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An anti-rotation piston sealing structure, characterized in that: include: Piston body (1); The outer wall of the piston body (1) is provided with a connecting groove (2), the outer wall of the connecting groove (2) is provided with two receiving parts (3), and the outer walls of the two receiving parts (3) are both installed with semi-sealing rings (4); The inner walls of the two receiving parts (3) are both fixed with limiting strips (6); The outer wall of the connecting groove (2) is provided with a limiting groove (5); The limiting strip (6) is located inside the limiting groove (5); The tops of the two receiving members (3) are each provided with a positioning groove (7), and a positioning member is arranged in the positioning groove (7); The outer wall of the connecting groove (2) is connected with a fixing ring (10); The positioning piece is connected to the bottom of the fixing ring (10).

2. The anti-rotation piston sealing structure according to claim 1, characterized in that: An auxiliary sealing ring (11) is installed on the outer wall of the fixing ring (10).

3. The anti-rotation piston sealing structure according to claim 1, characterized in that: The outer wall of the connecting groove (2) is provided with an external thread, and the inner wall of the fixing ring (10) is provided with an internal thread; The fixing ring (10) is threadably connected to the outer wall of the connecting groove (2) via an internal thread that matches an external thread.

4. The anti-rotation piston sealing structure according to claim 1, characterized in that: The positioning member is composed of a positioning block (8) and a connecting block (9), and the positioning block (8) is fixed at the bottom of the connecting block (9).

5. The anti-rotation piston sealing structure according to claim 4, characterized in that: The positioning block (8) is clamped inside the positioning groove (7).

6. The anti-rotation piston sealing structure according to claim 4, characterized in that: The bottom of the fixing ring (10) is provided with an annular sliding groove (12), and a sliding block (13) is installed in the annular sliding groove (12); The positioning block (8) is fixed at the bottom of the sliding block (13).

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