Cut-off tool for inner ring in pipe

Abstract

The utility model discloses a cut-off tool for an inner ring in a pipe. The cut-off tool comprises a cut-off tool wall, a piston, a piston rod, a cut-off tool blade and a cut-off tool hole, the piston rod is mounted at the top end of the piston; the cut-off tool blade is installed on the piston rod, the cut-off tool hole is formed in the side face of the cut-off tool wall, and a tool bit of the cut-off tool blade can penetrate through the cut-off tool hole to stretch out and draw back. According to the cut-off tool for the inner ring of the pipe, the piston structure drives the blade of the cut-off tool to stretch out or draw back, and therefore the cut-off tool structure can stretch into the inner wall of the pipe needing to be cut conveniently and cut the inner wall of the pipe, the cutting efficiency and the use efficiency of the cut-off tool for the inner ring of the pipe are improved, it can be guaranteed that accurate cutting is conducted in the pipe, and meanwhile damage to the outside of the pipe is reduced. The brush can also be used for cleaning the pipe in the wall, and the miniature brush can also be used for stirring the fruits into juice.

Description

Technical Field

[0001] The invention relates to the field of industrial cutting, in particular to a cutting knife for an inner ring of a pipe. Background Art

[0002] The pipe inner ring cutting knife is a tool used for cutting inside the pipe, which can be used for maintenance, installation or pipe modification. However, the existing pipe inner ring cutting knife is difficult to accurately cut inside the pipe and is very likely to cause damage to the outside of the pipe. Utility Model Content

[0003] The purpose of the present application is to provide a cutting knife for an inner ring of a pipe to solve the technical problems described in the background technology.

[0004] The technical solutions adopted in this application are as follows:

[0005] A cutting knife for an inner ring of a pipe comprises: a cutting knife wall, a piston, a piston rod, a cutting knife blade, and a cutting knife hole; the piston is arranged in the cutting knife wall, and the piston rod is installed on the top of the piston; the cutting knife blade is installed on the piston rod, and the cutting knife hole is arranged on the side of the cutting knife wall, and the cutter head of the cutting knife blade can extend and retract through the cutting knife hole.

[0006] Preferably, the outer diameter of the piston fills the inner diameter of the cutting knife wall, and the piston rod is fixedly mounted on the top of the piston.

[0007] Preferably, a fixed screw is provided on the piston rod; the cutter blade 300 is sleeved on the fixed screw and can rotate around the fixed screw.

[0008] Preferably, a limiting ring is provided at the top end of the cutting knife wall, and the piston rod passes through the hollow hole of the limiting ring, so that the piston moves axially on the inner wall of the cutting knife wall.

[0009] Preferably, a tube head is provided at the top of the piston rod; when the cutting knife blade is retracted into the cutting knife wall, the bottom end of the tube head abuts against the top of the limiting ring; the top of the tube head is spherical, which facilitates the cutting knife to extend into the inner wall of the tube body to be cut.

[0010] Preferably, a brush is installed at the front end of the cutting knife blade.

[0011] Preferably, the cutting knife also includes: a hydraulic press, a hydraulic pipeline, and a fixed end of the cutting knife; the inner wall of the cutting knife wall includes a hydraulic cavity, the hydraulic cavity is arranged at the top of the fixed end of the cutting knife, the hydraulic press is connected to the hydraulic cavity through the hydraulic pipeline, and the hydraulic press presses the liquid into / out of the hydraulic cavity through the hydraulic pipeline.

[0012] Preferably, the cutting knife also includes: an air compressor, an air pressure pipeline, and a fixed end of the cutting knife; the inner wall of the cutting knife wall includes an air pressure cavity, the air pressure cavity is arranged at the top of the fixed end of the cutting knife, the air compressor is connected to the air pressure cavity through the air pressure pipeline, and the air compressor presses / extracts gas into / out of the air pressure cavity through the air pressure pipeline.

[0013] Preferably, the cutting knife further comprises: an electric telescopic structure; the electric telescopic structure is arranged at the bottom end of the piston to push the piston to extend / retract.

[0014] The present application relates to a cutting knife for an inner ring of a pipe. The advantages and positive effects of the present application are: the cutting knife blade is driven to extend / retract by a piston structure, thereby facilitating the cutting knife structure to extend into the inner wall of the pipe body to be cut, and to cut the inner wall of the pipe body, thereby improving the cutting performance and use efficiency of the cutting knife for the inner ring of the pipe, ensuring accurate cutting inside the pipe, and reducing damage to the outside of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation of the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 The present invention is a schematic structural diagram of an embodiment of a cutting knife for inner ring of a pipe.

[0017] Figure 2 The present invention is a schematic diagram showing the blade extension of an embodiment of a cutting knife for an inner ring of a pipe.

[0018] Figure 3 The present invention is a schematic side structural diagram of an embodiment of a cutting knife for inner ring of a pipe.

[0019] Figure 4 The present invention is a schematic diagram of the hydraulic drive structure of a cutting knife for inner ring of a pipe according to an embodiment of the present invention.

[0020] Figure 5 The present invention is a schematic diagram of the pneumatically driven structure of a cutting knife for inner rings of pipes in one embodiment. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top", "bottom", "axial" and the like indicate orientations or positional relationships 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] As the instruction manual Figure 1-5 As shown:

[0026] Embodiment 1

[0027] A cutting knife for an inner ring of a pipe comprises: a cutting knife wall 100, a piston 200, a piston rod 210, a cutting knife blade 300, and a cutting knife hole 120; the piston 200 is arranged in the cutting knife wall 100, and the piston rod 210 is installed on the top of the piston 200; the cutting knife blade 300 is installed on the piston rod 210, and the cutting knife hole 120 is arranged on the side of the cutting knife wall 100, and the cutter head of the cutting knife blade 300 can extend and retract through the cutting knife hole 120.

[0028] The working principle of a cutting knife for an inner ring of a pipe is as follows: a cutting knife wall 100 extends into the inner wall of a pipe body to be cut, a piston 200 moves axially along the cutting knife wall 100, and at the same time drives a cutting knife blade 300 to move through a piston rod 210; the piston 200 pushes outward, drives the cutter head of the cutting knife blade 300 to extend through a cutting knife hole 120 until it contacts the inner wall of the pipe body to be cut, and the rotating cutting knife wall 100 drives the cutter head of the cutting knife blade 300 to rotate, thereby cutting the inner wall of the pipe body; after the cutting is completed, the piston 200 contracts inward, drives the cutter head of the cutting knife blade 300 to pass through the cutting knife hole 120 and close.

[0029] In this embodiment, the cutting knife used for the inner ring of the pipe drives the cutting knife blade to extend / retract through the piston structure, thereby facilitating the cutting knife structure to extend into the inner wall of the pipe body to be cut, and to cut the inner wall of the pipe body, thereby improving the cutting performance and use efficiency of the cutting knife used for the inner ring of the pipe.

[0030] Specifically, the outer diameter of the piston 200 fills the inner diameter of the cutting blade wall 100 , and the piston rod 210 is fixedly installed on the top of the piston 200 .

[0031] Specifically, a fixing screw 310 is disposed on the piston rod 210 ; the cutting blade 300 is sleeved on the fixing screw 310 and can rotate around the fixing screw 310 .

[0032] Specifically, a limiting ring 110 is provided at the top of the cutting knife wall 100 , and the piston rod 210 passes through the hollow hole of the limiting ring 110 , so that the piston 200 moves axially on the inner wall of the cutting knife wall 100 .

[0033] Specifically, a tube head 220 is provided at the top of the piston rod 210; when the cutting knife blade 300 is retracted into the cutting knife wall 100, the bottom end of the tube head 220 abuts against the top of the limiting ring 110; the top of the tube head 220 is a spherical surface, which facilitates the cutting knife to extend into the inner wall of the tube body to be cut.

[0034] Embodiment 2

[0035] Specifically, a brush is installed at the front end of the cutting knife blade 300 for cleaning the inner wall tube.

[0036] Embodiment 3

[0037] Specifically, a cutting knife for inner ring of pipe also includes: a hydraulic press 510, a hydraulic pipeline 520, and a fixed end 400 of the cutting knife; the inner wall of the cutting knife wall 100 includes a hydraulic cavity 500, the hydraulic cavity 500 is arranged at the top of the fixed end 400 of the cutting knife, the hydraulic press 510 is connected with the hydraulic cavity 500 through the hydraulic pipeline 520, and the hydraulic press 510 presses liquid into / out of the hydraulic cavity 500 through the hydraulic pipeline 520. The hydraulic cavity 500 is arranged at the bottom end of the piston 200 to push the piston 200 to extend / retract.

[0038] Embodiment 4

[0039] Specifically, a cutting knife for inner ring of pipe also includes: an air compressor 610, an air pressure pipeline 620, and a fixed end 400 of the cutting knife; the inner wall of the cutting knife wall 100 includes an air pressure chamber 600, the air pressure chamber 600 is arranged at the top of the fixed end 400 of the cutting knife, the air compressor 610 is connected with the air pressure chamber 600 through the air pressure pipeline 620, and the air compressor 610 presses gas into / extracts gas from the air pressure chamber 600 through the air pressure pipeline 620. The air pressure chamber 600 is arranged at the bottom end of the piston 200 to push the piston 200 to extend / retract.

[0040] Embodiment 5

[0041] Specifically, a cutting knife for an inner ring of a pipe also includes: an electric telescopic structure; the electric telescopic structure is arranged at the bottom end of the piston 200 to push the piston 200 to extend / retract.

[0042] Embodiment 6

[0043] A cutting knife for stirring inside of fruit comprises: a cutting knife wall 100, a piston 200, a piston rod 210, a cutting knife blade 300, and a cutting knife hole 120; the piston 200 is arranged in the cutting knife wall 100, and the piston rod 210 is installed on the top of the piston 200; the cutting knife blade 300 is installed on the piston rod 210, and the cutting knife hole 120 is arranged on the side of the cutting knife wall 100, and the blade head of the cutting knife blade 300 can extend and retract through the cutting knife hole 120.

[0044] The working principle of a cutting knife for stirring the inside of fruit is as follows: a cutting knife wall 100 extends into the fruit that needs to be stirred internally, a piston 200 moves axially along the cutting knife wall 100, and at the same time drives a cutting knife blade 300 to move through a piston rod 210; the piston 200 pushes outwards, drives the cutter head of the cutting knife blade 300 to extend through a cutting knife hole 120 into the fruit pulp, and the rotating cutting knife wall 100 drives the cutter head of the cutting knife blade 300 to rotate, stirring the inside of the fruit; after stirring is completed, the piston 200 contracts inwards, drives the cutter head of the cutting knife blade 300 to pass through the cutting knife hole 120 and retract.

[0045] In this embodiment, the cutting knife used for stirring the inside of the fruit drives the cutting knife blade to extend / retract through the piston structure, so that the cutting knife structure can be easily extended into the fruit that needs internal stirring, and can be used to stir the fruit into juice.

[0046] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cutting knife for inner ring of a pipe, characterized in that: include: A cutting knife wall (100), a piston (200), a piston rod (210), a cutting knife blade (300), and a cutting knife hole (120); the piston (200) is arranged in the cutting knife wall (100), and the piston rod (210) is installed on the top of the piston (200); the cutting knife blade (300) is installed on the piston rod (210), and the cutting knife hole (120) is arranged on the side of the cutting knife wall (100), and the blade head of the cutting knife blade (300) can extend and retract through the cutting knife hole (120).

2. The cutting knife for inner ring of a pipe according to claim 1, characterized in that: The outer diameter of the piston (200) fills the inner diameter of the cutting blade wall (100), and the piston rod (210) is fixedly installed on the top of the piston (200).

3. The cutting knife for inner ring of pipe according to claim 1, characterized in that: A fixing screw (310) is arranged on the piston rod (210); the cutting blade 300 is sleeved on the fixing screw (310) and can rotate around the fixing screw (310).

4. The cutting knife for inner ring of pipe according to claim 1, characterized in that: A limiting ring (110) is arranged at the top of the cutting blade wall (100), and the piston rod (210) passes through the hollow hole of the limiting ring (110), so that the piston (200) moves axially on the inner wall of the cutting blade wall (100).

5. The cutting knife for inner ring of pipe according to claim 1, characterized in that: A tube head (220) is arranged at the top end of the piston rod (210); when the cutting knife blade (300) is retracted into the cutting knife wall (100), the bottom end of the tube head (220) abuts against the top end of the limiting ring (110); the top end of the tube head (220) is a spherical surface, which facilitates the cutting knife to extend into the inner wall of the tube body to be cut.

6. The cutting knife for inner ring of a pipe according to any one of claims 1 to 5, characterized in that: A brush is installed at the front end of the cutting knife blade (300).

7. The cutting knife for inner ring of a pipe according to any one of claims 1 to 5, characterized in that: The cutting knife further comprises: a hydraulic press (510), a hydraulic pipeline (520), and a cutting knife fixed end (400); the inner wall of the cutting knife wall (100) comprises a hydraulic cavity (500), the hydraulic cavity (500) is arranged at the top of the cutting knife fixed end (400), the hydraulic press (510) is connected with the hydraulic cavity (500) through the hydraulic pipeline (520), and the hydraulic press (510) presses liquid into / out of the hydraulic cavity (500) through the hydraulic pipeline (520).

8. The cutting knife for inner ring of a pipe according to any one of claims 1 to 5, characterized in that: The cutting knife further comprises: an air compressor (610), an air pressure pipe (620), and a fixed end (400) of the cutting knife; the inner wall of the cutting knife wall (100) comprises an air pressure chamber (600), the air pressure chamber (600) is arranged at the top of the fixed end (400) of the cutting knife, the air compressor (610) is connected to the air pressure chamber (600) through the air pressure pipe (620), and the air compressor (610) presses gas into / extracts gas from the air pressure chamber (600) through the air pressure pipe (620).

9. The cutting knife for inner ring of a pipe according to any one of claims 1 to 5, characterized in that: The cutting knife further comprises: an electric telescopic structure; the electric telescopic structure is arranged at the bottom end of the piston (200) and pushes the piston (200) to extend / retract.

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