Stainless steel core shaft structure for internal pressurization

Abstract

The utility model discloses a stainless steel core shaft structure for internal pressurization, which relates to the technical field of core shaft structures and comprises a core shaft body, a fixing block and a pipe fitting, the fixing block is arranged on one side of the core shaft body and fixedly connected with the core shaft body through a plurality of screws, and the pipe fitting is sleeved on the outer side of the core shaft body and fixedly connected with the core shaft body through a plurality of screws. The mandrel body comprises a first connecting part, a second connecting part and a third connecting part, the second connecting part is arranged between the first connecting part and the third connecting part, and the first connecting part, the second connecting part and the third connecting part are of an integrated structure. According to the utility model, the structure is simpler to operate, the connecting effect can be realized only by inserting the pipe fitting into the groove, other auxiliary tools are not needed, and the Y-shaped sealing ring and the check ring are common parts in the mechanical field, are suitable for batch processing operation, are convenient to reduce the production cost, and can effectively improve the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of core shaft structures, in particular to a stainless steel core shaft structure for internal pressurization. Background Art

[0002] The core shaft is a mechanical part that connects rotating parts. It is widely used in the mechanical field to achieve mutual connection between parts, thereby ensuring the normal operation of large equipment. The traditional core shaft and pipe fitting connection process is to set grooves on both ends of the core shaft, and then put the O-ring into the groove. The pipe to be processed passes through the core shaft with the O-ring, and the two ends of the pipe to be processed are radially clamped at the position of the O-ring through the clamping die to achieve the fixing effect. However, the above method requires the use of other auxiliary tools, the operation is more cumbersome, and it is not suitable for batch processing operations and has low practicality.

[0003] Based on this, a stainless steel internal pressurization core shaft structure is now provided to eliminate the disadvantages of the existing technical solutions. Utility Model Content

[0004] The purpose of the utility model is to provide a stainless steel internal pressurization core shaft structure to solve the problem in the background art that the traditional method is cumbersome to operate, resulting in being unsuitable for batch processing and having low practicality.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A stainless steel internal pressurization core shaft structure comprises a core shaft body, a fixing block and a pipe fitting, wherein the fixing block is arranged on one side of the core shaft body and is fixedly connected to the core shaft body by a plurality of screws, and the pipe fitting is sleeved on the outside of the core shaft body;

[0007] The core shaft body includes a first connecting portion, a second connecting portion and a third connecting portion, the second connecting portion is arranged between the first connecting portion and the third connecting portion, and the first connecting portion, the second connecting portion and the third connecting portion are an integrated structure.

[0008] Preferably, a groove is provided on the surface of the first connecting portion, a Y-shaped sealing outer ring is provided inside the groove, and the Y-shaped sealing outer ring is sleeved on the outside of the second connecting portion.

[0009] Preferably, a Y-shaped sealing inner ring is sleeved on the outer side of the third connecting part, and the inner diameter of the Y-shaped sealing inner ring is smaller than the outer diameter of the second connecting part.

[0010] Preferably, a retaining ring is provided on the side of the Y-shaped sealing inner ring away from the second connecting part, and a fixing round nut is provided on the side of the retaining ring away from the Y-shaped sealing inner ring, and the size specifications of the retaining ring and the fixing round nut are compatible with the size specifications of the third connecting part.

[0011] Preferably, an injection port for conveying liquid medium is provided on the surface of the core shaft body, and a through hole is provided at the end of the injection port, and the through hole is communicated with the injection port.

[0012] Preferably, the opening directions of the Y-shaped sealing outer ring and the Y-shaped sealing inner ring are consistent.

[0013] Preferably, a protrusion matching the groove is provided on the surface of the fixing block, a round hole matching the pipe fitting is opened inside the fixing block, and the fixing block is sleeved on the outside of the pipe fitting.

[0014] Preferably, the inner diameter of the pipe is larger than the outer diameter of the second connecting portion.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The structure of the utility model is relatively simple to operate. It only needs to insert the pipe into the groove to achieve the connection effect, and no other auxiliary tools are needed. The Y-shaped sealing ring and retaining ring are commonly used components in the mechanical field. They have a simple structure and low price, are suitable for batch processing operations, are convenient for reducing production costs, and can effectively improve production efficiency. The structure is also provided with an injection port. By injecting liquid medium into the inner cavity of the pipe, the lip of the Y-shaped sealing ring can be squeezed, causing the Y-shaped sealing ring to deform to achieve a sealing effect, thereby improving the forming efficiency of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic structural diagram of the utility model without pipe fittings.

[0019] Figure 3 It is a cross-sectional view of the present invention.

[0020] Notes on figure marks: core shaft body 10, first connecting part 11, second connecting part 12, third connecting part 13, groove 14, Y-type sealing outer ring 15, Y-type sealing inner ring 16, retaining ring 17, fixing round nut 18, injection port 19, fixing block 20, protrusion 21, pipe fitting 30. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] In this embodiment, if Figure 1-Figure 3As shown, a stainless steel internal pressurization mandrel structure includes a mandrel body 10, a fixing block 20 and a pipe fitting 30. The mandrel body 10 is made of stainless steel commonly used in the art. The fixing block 20 is arranged on one side of the mandrel body 10. The fixing block 20 is fixedly connected to the mandrel body 10 by a plurality of screws, which is convenient for disassembly and installation. The pipe fitting 30 is sleeved on the outside of the mandrel body 10. The pipe fitting 30 is a common pipe fitting structure and is easy to cooperate with the mandrel body 10, thereby realizing rapid prototyping operation.

[0023] The core shaft body 10 includes a first connecting part 11, a second connecting part 12 and a third connecting part 13. The second connecting part 12 is arranged between the first connecting part 11 and the third connecting part 13. The first connecting part 11, the second connecting part 12 and the third connecting part 13 are an integrated structure. Before the stainless steel internal pressurization core shaft structure is used, first check whether the structure can be used normally, and then install the fixing block 20 and the pipe fitting 30 to make the structure ready for use.

[0024] Among them Figure 1-Figure 2 As shown, a groove 14 is provided on the surface of the first connecting portion 11, and a Y-shaped sealing outer ring 15 is provided inside the groove 14. The Y-shaped sealing outer ring 15 is sleeved on the outside of the second connecting portion 12. The cross-sections of the Y-shaped sealing outer ring 15 and the Y-shaped sealing inner ring 16 are both Y-shaped. Their service life is longer than that of the O-ring, and they have the advantages of reliable sealing performance, low friction resistance, and a wide applicable pressure range. They have a relatively simple structure and are easy to install.

[0025] Among them Figure 1-Figure 2 As shown, a Y-shaped sealing inner ring 16 is sleeved on the outer side of the third connecting part 13, and the inner diameter of the Y-shaped sealing inner ring 16 is smaller than the outer diameter of the second connecting part 12, so that the Y-shaped sealing inner ring 16 can be restricted at the connection between the second connecting part 12 and the third connecting part 13, making it convenient to fix its position by fixing the round nut 18.

[0026] Among them Figure 1-Figure 2 As shown, a retaining ring 17 is provided on the side of the Y-shaped sealing inner ring 16 away from the second connecting part 12 to increase the sealing effect of the structure, improve the friction force, and avoid leakage of the liquid medium. A fixing round nut 18 is provided on the side of the retaining ring 17 away from the Y-shaped sealing inner ring 16 to facilitate locking and cooperate with the third connecting part 13. The dimensions of the retaining ring 17 and the fixing round nut 18 are compatible with the dimensions of the third connecting part 13 to ensure the connection stability of the structure.

[0027] Among them Figure 1-Figure 2As shown, an injection port 19 for conveying liquid medium is provided on the surface of the core shaft body 10. The injection port 19 passes through the first connecting part 11 and extends to the middle of the second connecting part 12, so that the liquid medium can smoothly enter the interior of the pipe 30. A through hole is provided at the end of the injection port 19, which is connected to the injection port 19 to facilitate the conveying of liquid medium.

[0028] Among them Figure 1-Figure 2 As shown, the opening directions of the Y-shaped sealing outer ring 15 and the Y-shaped sealing inner ring 16 are consistent, and the opening directions are adapted to the flow direction of the liquid medium, thereby ensuring the overall practicality of the stainless steel internal pressurization core shaft structure.

[0029] Among them Figure 1-Figure 2 As shown, the surface of the fixing block 20 is provided with a protrusion 21 adapted to the groove 14, which plays a positioning role and facilitates fixing the position of the fixing block 20 and the core shaft body 10 by a number of screws. A circular hole adapted to the pipe fitting 30 is opened inside the fixing block 20, and the fixing block 20 is sleeved on the outside of the pipe fitting 30, making it convenient to insert the pipe fitting 30 into the fixing block 20.

[0030] Among them Figure 1-Figure 2 As shown, the inner diameter of the pipe 30 is larger than the outer diameter of the second connecting part 12, so that there is a gap between the pipe 30 and the second connecting part 12, so that the liquid medium can smoothly enter the interior of the pipe 30, which is convenient for cooperating with the Y-shaped sealing ring to form a sealing effect.

[0031] When in use, the user first places the Y-shaped sealing outer ring 15 into the groove 14 on one side of the core shaft body 10, then inserts the protrusion on the surface of the fixing block 20 into the inside of the groove 14, and fixes the fixing block 20 and the core shaft body 10 together through a number of screws, thereby achieving the fixing operation of the Y-shaped sealing outer ring 15, and then sequentially sets the Y-shaped sealing inner ring 16 and the retaining ring 17 on the outside of the third connecting part 13, locks the above components by fixing the round nut 18, and passes the pipe 30 through the fixing round nut 18, the retaining ring 17, the Y-shaped sealing inner ring 1 6 is then inserted into the fixing block 20 and the inner side of the Y-shaped sealing outer ring 15, and then contacts the inner wall of the groove 14, thereby completing the installation operation of each component. When it is necessary to inject liquid medium, the liquid medium is transported to the inside of the pipe fitting 30 through the injection port 19, so that the Y-shaped sealing outer ring 15 and the Y-shaped sealing inner ring 16 are squeezed and deformed at their lips under the pressure of the liquid medium to achieve a sealing effect. The greater the pressure of the injected liquid medium, the greater the deformation of the Y-shaped sealing ring lip, the better the sealing effect, and it is easier to achieve the molding operation of the pipe fitting 30.

[0032] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A stainless steel internal pressurization core shaft structure, characterized in that: The invention comprises a core shaft body (10), a fixing block (20) and a pipe fitting (30), wherein the fixing block (20) is arranged on one side of the core shaft body (10), the fixing block (20) is fixedly connected to the core shaft body (10) by a plurality of screws, and the pipe fitting (30) is sleeved on the outside of the core shaft body (10); The core shaft body (10) includes a first connecting portion (11), a second connecting portion (12) and a third connecting portion (13), wherein the second connecting portion (12) is arranged between the first connecting portion (11) and the third connecting portion (13), and the first connecting portion (11), the second connecting portion (12) and the third connecting portion (13) are an integrated structure.

2. The stainless steel internal pressurization core shaft structure according to claim 1, characterized in that: A groove (14) is provided on the surface of the first connecting portion (11), a Y-shaped sealing outer ring (15) is provided inside the groove (14), and the Y-shaped sealing outer ring (15) is sleeved on the outside of the second connecting portion (12).

3. The stainless steel internal pressurization core shaft structure according to claim 2, characterized in that: The outer side of the third connecting portion (13) is sleeved with a Y-shaped sealing inner ring (16), and the inner diameter of the Y-shaped sealing inner ring (16) is smaller than the outer diameter of the second connecting portion (12).

4. The stainless steel internal pressurization core shaft structure according to claim 3, characterized in that: A retaining ring (17) is provided on the side of the Y-shaped sealing inner ring (16) away from the second connecting portion (12), and a fixing round nut (18) is provided on the side of the retaining ring (17) away from the Y-shaped sealing inner ring (16). The size specifications of the retaining ring (17) and the fixing round nut (18) are both compatible with the size specifications of the third connecting portion (13).

5. The stainless steel internal pressurization core shaft structure according to claim 1, characterized in that: The surface of the core shaft body (10) is provided with an injection port (19) for conveying a liquid medium, and an end of the injection port (19) is provided with a through hole, and the through hole is connected to the injection port (19).

6. The stainless steel internal pressurization core shaft structure according to claim 3, characterized in that: The opening directions of the Y-shaped sealing outer ring (15) and the Y-shaped sealing inner ring (16) are consistent.

7. The stainless steel internal pressurization core shaft structure according to claim 1, characterized in that: The surface of the fixing block (20) is provided with a protrusion (21) adapted to the groove (14), the interior of the fixing block (20) is provided with a circular hole adapted to the pipe (30), and the fixing block (20) is sleeved on the outside of the pipe (30).

8. The stainless steel internal pressurization core shaft structure according to claim 1, characterized in that: The inner diameter of the pipe (30) is greater than the outer diameter of the second connecting portion (12).

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