A stainless steel pipe fitting shaping device

Abstract

The application belongs to the technical field of pipe repairing, and provides a stainless steel pipe shaping device, which comprises a shell, an oil tank, an oil pump assembly, a hydraulic pump, a shaping push rod and a shaping grinding tool; the oil tank is installed in the interior of the shell; the oil pump assembly is connected with the oil tank; the hydraulic cylinder is installed in the interior of the shell, and the rodless cavity of the hydraulic cylinder is connected with the oil pump assembly; the shaping push rod is in a conical body structure, one end of the shaping push rod with the maximum diameter is connected with the telescopic rod of the hydraulic cylinder; the cross section of the shaping grinding tool perpendicular to the axis is annular, the shaping grinding tool is sleeved on the shaping push rod, and the inner diameter of the shaping grinding tool is smaller than the outer diameter of the part of the shaping push rod; the shaping grinding tool is composed of two half grinding tools which are symmetrical along the axis. The application has simple and compact structure, and is convenient and fast for repairing and shaping the pipe, and is not easy to damage the pipe.

Description

Technical Field

[0001] This application belongs to the field of pipe fitting repair technology, and more specifically, relates to a stainless steel pipe fitting shaping device. Background Technology

[0002] Currently, pipe expanders are used to expand and repair pipe fittings. These expanders are conical in shape and require manual insertion into the pipe fitting, followed by continuous rotation or pushing to achieve repair and reshaping. Conical expanders are prone to damaging pipe fittings, and manual control is time-consuming, labor-intensive, and inefficient. Some systems now use electric rotary tools in conjunction with expanders, rotating the expander into the pipe fitting. However, electric rotary tools combined with conical expanders are prone to damaging pipe fittings, and it is difficult to control the pushing force and angle. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings in the prior art, the purpose of this application is to provide a stainless steel pipe fitting shaping device with a simple and compact structure, which makes the repair and shaping of pipe fittings convenient and quick, and does not easily damage the pipe fittings.

[0004] The technical means adopted in this application to solve the above-mentioned technical problems are:

[0005] This application provides a stainless steel pipe fitting shaping device, comprising:

[0006] case;

[0007] A fuel tank, which is installed inside the housing;

[0008] An oil pump assembly, which is connected to the oil tank;

[0009] A hydraulic cylinder is installed inside the housing, and the rodless chamber of the hydraulic cylinder is connected to the oil pump assembly;

[0010] A shaping push rod, wherein the shaping push rod has a tapered structure, and the end of the shaping push rod with the maximum diameter is connected to the telescopic rod of the hydraulic cylinder;

[0011] A shaping abrasive, wherein the cross-section of the shaping abrasive perpendicular to the axis is annular, the shaping abrasive is sleeved on the shaping push rod, and the inner diameter of the shaping abrasive is smaller than a portion of the outer diameter of the shaping push rod;

[0012] The shaping mold consists of two symmetrical half-molds along the axis. When the shaping push rod is pushed into a specific position inside the shaping mold, the shaping push rod will open the two half-molds away from each other. The two half-molds support the inner wall of the pipe, thereby shaping the pipe.

[0013] Preferably, the oil pump assembly includes a pump body and a drive motor, the pump body being connected to the oil tank, and the drive motor being connected to the pump body.

[0014] Preferably, it also includes a slide tube, which is installed in the housing, and the shaping push rod is inserted into the slide tube.

[0015] Preferably, the system further includes a cylinder, a first gear, and a second gear. The first gear is connected to the output shaft of the drive motor, and the second gear meshes with the first gear. The telescopic rod of the cylinder is connected to the second gear, enabling the drive motor to repeatedly extend and retract the telescopic rod via the first and second gears. The rodless chamber of the cylinder is equipped with an inlet valve and an outlet valve. When the piston of the cylinder slides towards its rodless chamber, the pressure inside the rodless chamber is greater than the external pressure, causing the outlet valve to open and the inlet valve to close. When the piston of the cylinder slides towards the telescopic rod, the pressure inside the rodless chamber is less than the external pressure, causing the inlet valve to open and the outlet valve to close.

[0016] Preferably, the system further includes a pressure relief valve and a return spring, wherein the return spring is sleeved on the telescopic rod, and one end of the return spring abuts against the inner wall of the hydraulic cylinder, and the other end of the return spring abuts against the piston of the hydraulic rod; the pressure relief valve is installed on the oil pump assembly.

[0017] Compared with the prior art, the stainless steel pipe shaping device of this application is equipped with a hydraulic cylinder assembly. The hydraulic cylinder assembly pumps oil from the oil tank into the hydraulic cylinder, causing the piston of the hydraulic cylinder to slide. The hydraulic cylinder then extends the telescopic rod, which drives the shaping push rod forward. The outer diameter of part of the shaping push rod is larger than the inner diameter of the shaping mold. Therefore, when it reaches a certain position, the shaping push rod will press against the inner wall of the shaping mold, causing the shaping mold to open outward and come into contact with the inner wall of the pipe fitting, thereby achieving the shaping and repair of the pipe fitting. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the stainless steel pipe shaping device of this application.

[0020] Figure 2 This is an exploded view of the stainless steel pipe shaping device of this application.

[0021] Marker explanation:

[0022] 1. Housing; 2. Oil tank; 3. Oil pump assembly; 3a. Drive motor; 4. Hydraulic pump; 5. Shaping push rod; 6. Shaping mold; 6a. Half mold; 6b. Expansion plate; 7. Slide tube; 8. Cylinder; 9. Second gear. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figure 1 and Figure 2 As shown, this embodiment provides a stainless steel pipe shaping device, including a housing 1, an oil tank 2, an oil pump assembly 3, a hydraulic pump 4, a shaping push rod 5, and a shaping mold 6; the oil tank 2 is installed inside the housing 1; the oil pump assembly 3 is connected to the oil tank 2; the hydraulic cylinder is installed inside the housing 1, and the rodless chamber of the hydraulic cylinder is connected to the oil pump assembly 3; the shaping push rod 5 has a conical structure, and the end of the shaping push rod 5 with the largest diameter is connected to the telescopic rod of the hydraulic cylinder; The shaping mold 6 has an annular cross-section perpendicular to its axis. The shaping mold 6 is fitted onto the shaping push rod 5. The inner diameter of the shaping mold 6 is smaller than a portion of the outer diameter of the shaping push rod 5. The shaping mold 6 consists of two symmetrical half-molds 6a along its axis. When the shaping push rod 5 is pushed into a specific position inside the shaping mold 6, the shaping push rod 5 will push the two half-molds 6a of the shaping mold 6 apart. The two half-molds 6a support the inner wall of the pipe, thereby shaping the pipe.

[0026] It should be noted that the expansion plate 6b is also included. The expansion plate 6b is installed inside the shaping mold 6 and is coaxial with the shaping mold 6. The expansion plate 6b has a through hole at its center and is composed of multiple fan-shaped sections. When the shaping push rod 5 is gradually pushed in, it will open the through hole, causing the multiple fan-shaped sections of the expansion plate 6b to spread out. The fan-shaped sections will then abut against the semi-mold 6a, causing the semi-mold 6a to open, thereby shaping and repairing the pipe fitting. A spring can be installed around the expansion plate 6b so that it can return to its original position when not subjected to the pushing force of the shaping push rod 5.

[0027] In addition, a battery can be installed inside the housing 1 to provide power to the drive motor 3a.

[0028] In some preferred embodiments of this invention, the oil pump assembly 3 includes a pump body and a drive motor 3a. The pump body is connected to the oil tank 2, and the drive motor 3a is connected to the pump body. Thus, the drive motor 3a drives the pump body to pump oil from the oil tank 2 into the oil cylinder.

[0029] In some preferred embodiments of this utility model, a sliding tube 7 is further included, which is installed on the housing 1, and the shaping push rod 5 is inserted into the sliding tube 7. In this way, the shaping push rod 5 slides within the sliding tube 7, which can ensure the sliding stability of the shaping push rod 5.

[0030] In some preferred embodiments of this utility model, a cylinder 8, a first gear, and a second gear 9 are also included. The first gear is connected to the output shaft of the drive motor 3a, and the second gear 9 meshes with the first gear. The telescopic rod of the cylinder 8 is connected to the second gear 9, enabling the drive motor 3a to repeatedly extend and retract the telescopic rod via the first gear and the second gear 9. The rodless chamber of the cylinder 8 is equipped with an inlet valve and an outlet valve. When the piston of the cylinder 8 slides towards its rodless chamber, the pressure inside the rodless chamber is greater than the external pressure, causing the outlet valve to open and the inlet valve to close. When the piston of the cylinder 8 slides towards the telescopic rod, the pressure inside the rodless chamber is less than the external pressure, causing the inlet valve to open and the outlet valve to close. Thus, the cylinder 8 can output gas, which can be pumped into pipes through external pipelines to test the sealing performance of the pipes. Furthermore, the drive motor 3a can drive both the cylinder 8 and a hydraulic cylinder, resulting in a simple and compact structure.

[0031] In some preferred embodiments of this utility model, a pressure relief valve and a return spring are also included. The return spring is sleeved on the telescopic rod, and one end of the return spring abuts against the inner wall of the hydraulic cylinder, while the other end of the return spring abuts against the piston of the hydraulic rod. The pressure relief valve is installed on the oil pump assembly 3.

[0032] Compared with the prior art, the stainless steel pipe shaping device of this application is equipped with a hydraulic cylinder assembly. The hydraulic cylinder assembly pumps oil from the oil tank 2 into the hydraulic cylinder, causing the piston of the hydraulic cylinder to slide. The hydraulic cylinder then extends the telescopic rod, which drives the shaping push rod 5 forward. Part of the outer diameter of the shaping push rod 5 is larger than the inner diameter of the shaping mold 6. Therefore, when it reaches a certain position, the shaping push rod 5 will press against the inner wall of the shaping mold 6, causing the shaping mold 6 to open outward and abut against the inner wall of the pipe fitting, thereby achieving the shaping and repair of the pipe fitting.

[0033] The above description is merely a specific embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should also be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A stainless steel pipe fitting shaping device, characterized in that, include: case; A fuel tank, which is installed inside the housing; An oil pump assembly, which is connected to the oil tank; A hydraulic cylinder is installed inside the housing, and the rodless chamber of the hydraulic cylinder is connected to the oil pump assembly; A shaping push rod, wherein the shaping push rod has a tapered structure, and the end of the shaping push rod with the maximum diameter is connected to the telescopic rod of the hydraulic cylinder; A shaping abrasive, wherein the cross-section of the shaping abrasive perpendicular to the axis is annular, the shaping abrasive is sleeved on the shaping push rod, and the inner diameter of the shaping abrasive is smaller than a portion of the outer diameter of the shaping push rod; The shaping mold consists of two symmetrical half-molds along the axis. When the shaping push rod is pushed into a specific position inside the shaping mold, the shaping push rod will open the two half-molds away from each other. The two half-molds support the inner wall of the pipe, thereby shaping the pipe.

2. The stainless steel pipe shaping device according to claim 1, characterized in that, The oil pump assembly includes a pump body and a drive motor. The pump body is connected to the oil tank, and the drive motor is connected to the pump body.

3. The stainless steel pipe shaping device according to claim 1, characterized in that, It also includes a slide tube, which is installed in the housing, and the shaping push rod is inserted into the slide tube.

4. The stainless steel pipe shaping device according to claim 2, characterized in that, It also includes a cylinder, a first gear, and a second gear. The first gear is connected to the output shaft of the drive motor, and the second gear meshes with the first gear. The telescopic rod of the cylinder is connected to the second gear, so that the drive motor drives the telescopic rod to repeatedly extend and retract through the first gear and the second gear. The rodless chamber of the cylinder is provided with an inlet valve and an outlet valve. When the piston of the cylinder slides towards its rodless chamber, the pressure inside the rodless chamber is greater than the external pressure, so that the outlet valve opens and the inlet valve closes. When the piston of the cylinder slides towards the telescopic rod, the pressure inside the rodless chamber is less than the external pressure, so that the inlet valve opens and the outlet valve closes.

5. The stainless steel pipe shaping device according to claim 1, characterized in that, It also includes a pressure relief valve and a return spring, wherein the return spring is sleeved on the telescopic rod, and one end of the return spring abuts against the inner wall of the hydraulic cylinder, and the other end of the return spring abuts against the piston of the hydraulic cylinder; the pressure relief valve is installed on the oil pump assembly.

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