A parallel pipe separation device

Abstract

The present invention discloses a parallel pipe separation device, comprising a first plug-in separation plate and a second plug-in separation plate, a top surface edge of the first plug-in separation plate is provided with a first circular hole groove, a middle portion of the first circular hole groove is provided with a first core column, a first circular hole groove is provided with a connected first guide groove on the outer side, a first opening is provided on the top surface of the first plug-in separation plate, a bottom surface edge of the second plug-in separation plate is provided with a second circular hole groove, a middle portion of the second circular hole groove is provided with a second core column, a second circular hole groove is provided with a connected second guide groove on the outer side, a second opening is provided on the bottom surface of the second plug-in separation plate, the first plug-in separation plate and the second plug-in separation plate can be connected and fixed by positioning pins, a first positioning hole is provided on the first plug-in separation plate, and a second positioning hole is provided on the second plug-in separation plate, after connection and fixation, the first and second circular hole grooves can form a parallel pipe accommodating cavity, the first and second core columns can be inserted into the inner cavity of the parallel pipe, and the first and second guide grooves can form a tapered guide hole.

Description

Technical Field

[0001] The invention relates to a parallel pipe separation device. Background Art

[0002] A double oxygen tube is an oxygen tube used to deliver oxygen to patients with breathing difficulties or hypoxia. It needs to be separated into two independent oxygen tubes when in use. Currently, double oxygen tubes are generally separated into two independent oxygen tubes manually. For the separation of parallel tubes such as double oxygen tubes, since the parallel tubes are small, it is not easy to hold them with hands, and the positions of the two hands are not easy to be consistent. When separating the parallel tubes, it is not easy for the two hands to apply force evenly, resulting in the parallel tubes being torn when separated, with a high breakage rate and low efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a parallel pipe separation device, so that when the parallel pipes are separated, the force applied to the parallel pipes is uniform, the pipes are not easily torn, the breakage rate is low, and the efficiency is high.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] A parallel pipe separation device comprises a first plug-in separation plate and a second plug-in separation plate, wherein the first plug-in separation plate has a first circular hole groove on its top edge, a first core column arranged along the axial direction of the first circular hole groove in the middle of the first circular hole groove, a first guide groove connected to each other is arranged on the outer side of the first circular hole groove of the first plug-in separation plate, a first opening is opened at a position corresponding to the first circular hole groove and the first guide groove on the top surface of the first plug-in separation plate, a second circular hole groove is arranged on the bottom edge of the second plug-in separation plate, a second core column arranged along the axial direction of the second circular hole groove in the middle of the second circular hole groove, a first guide groove connected to each other is arranged on the outer side of the second circular hole groove of the second plug-in separation plate A second guide groove is connected to the second plug-in separation plate, and a second opening is opened on the bottom surface of the second plug-in separation plate at a position corresponding to the second circular hole groove and the second guide groove. The first plug-in separation plate and the second plug-in separation plate can be connected and fixed by a positioning pin. The first plug-in separation plate is provided with a first positioning hole that matches the positioning pin, and the second plug-in separation plate is provided with a second positioning hole that matches the positioning pin. After the first plug-in separation plate and the second plug-in separation plate are connected and fixed, the first circular hole groove and the second circular hole groove can form a parallel tube accommodating cavity, the first core column and the second core column can be inserted into the inner cavity of the parallel tube, and the first guide groove and the second guide groove can form a tapered guide hole for inserting the parallel tube. By adopting such a structure, the first circular hole groove and the first core column on the first plug-in separation plate can be used to accommodate and position one tube in the parallel tube, and the second circular hole groove and the second core column on the second plug-in separation plate can be used to accommodate and position the other tube in the parallel tube. When the parallel tubes are separated, uniform force can be applied to the two tubes of the parallel tubes to separate the parallel tubes evenly, which is not easy to be damaged and has a low breakage rate. The conical guide hole composed of the first guide groove and the second guide groove is used to guide the insertion of the parallel tube, so that the parallel tube can be easily inserted into the first circular hole groove and the second circular hole groove.

[0006] As an improvement of the present invention, the first core column and the second core column both include a cylindrical core column body and a core column head, the core column body is connected to the core column head, the core column head gradually decreases from the connection to the free end, the maximum diameter of the core column head is the same as the diameter of the core column body, and the free end of the core column head is arc-shaped. With such a structure, the first core column and the second core column can position and evenly apply force to the parallel tube, avoiding the first core column and the second core column from damaging the parallel tube when the parallel tube is inserted.

[0007] As an improvement of the present invention, the first opening is rectangular, and the plane formed by the center line of the first opening and the axis of the first circular hole groove is perpendicular to the top surface of the first plug-in separation plate, and the second opening is rectangular, and the plane formed by the center line of the second opening and the axis of the second circular hole groove is perpendicular to the bottom surface of the second plug-in separation plate. With such a structure, the first opening and the second opening can accommodate the connecting part of the parallel pipe, so that the parallel pipe can be easily inserted into the parallel pipe accommodating cavity formed by the first circular hole groove and the second circular hole groove.

[0008] As an improvement of the present invention, the first guide groove is a conical groove, the first guide groove is coaxial with the first circular hole groove, the second guide groove is a conical groove, the second guide groove is coaxial with the second circular hole groove, the taper of the first guide groove and the second guide groove are both 45°-75°, and the first guide groove and the second guide groove are mirror-symmetrical. With such a structure, the parallel pipe can be better guided when inserted, the insertion operation of the parallel pipe is convenient, and the size of the first plug-in separation plate and the second plug-in separation plate is appropriate.

[0009] As an improvement of the present invention, the taper of the first guide groove and the second guide groove are both 60°, and the depth of the guide hole is 10-20 mm. With such a structure, the parallel pipe can be better guided when inserted, which is very convenient for the insertion operation of the parallel pipe, and it is convenient to standardize the production of the first plug-in separation plate and the second plug-in separation plate, thereby reducing costs.

[0010] As an improvement of the present invention, a first circular through hole is opened in the middle of the bottom surface of the first circular hole groove, the first circular through hole cooperates with the first core column, and the first core column can be inserted into the first circular through hole, and a second circular through hole is opened in the middle of the bottom surface of the second circular hole groove, the second circular through hole cooperates with the second core column, and the second core column can be inserted into the second circular through hole. With such a structure, the first core column and the second core column are detachable, which facilitates the production and installation of the first plug-in separation plate and the second plug-in separation plate, facilitates maintenance and replacement, and reduces production costs.

[0011] As an improvement of the present invention, the length of the first circular hole groove is the same as the length of the second circular hole groove, the length of the first core column extending out matches the length of the first circular hole groove, the length of the second core column extending out matches the length of the second circular hole groove, and the lengths of the first core column and the second core column extending out are both 20-50mm. With such a structure, when the parallel pipes are separated, sufficient separation force can be provided to the two pipes of the parallel pipes, the parallel pipes are evenly separated, and are not prone to breakage, with a low breakage rate, and the sizes of the first plug-in separation plate and the second plug-in separation plate are appropriate.

[0012] As an improvement of the present invention, the parallel pipe is a double oxygen pipe, the inner diameter of the first circular hole groove is slightly larger than the outer diameter of the oxygen pipe, the outer diameter of the first core column is slightly smaller than the inner diameter of the oxygen pipe, the inner diameter of the second circular hole groove is slightly larger than the outer diameter of the oxygen pipe, and the outer diameter of the second core column is slightly smaller than the inner diameter of the oxygen pipe. With such a structure, the double oxygen pipe can be easily inserted into the parallel pipe accommodating cavity composed of the first circular hole groove and the second circular hole groove, and the first core column and the second core column can be easily inserted into the inner cavity of the oxygen pipe without damaging the double oxygen pipe.

[0013] As an improvement of the present invention, the first plug-in separation plate is a rectangular flat plate, the first circular hole groove is arranged along the length direction of the first plug-in separation plate, the first circular hole groove is located in the middle of the width direction, and two first positioning holes are arranged on both sides of the first plug-in separation plate, and the second plug-in separation plate is a rectangular flat plate, the second circular hole groove is arranged along the length direction of the second plug-in separation plate, the second circular hole groove is located in the middle of the width direction, and two second positioning holes are arranged on both sides of the second plug-in separation plate, the first positioning hole corresponds to the second positioning hole, and the first plug-in separation plate and the second plug-in separation plate have the same size. With such a structure, the area of ​​the first plug-in separation plate and the second plug-in separation plate is smaller, material and cost are saved, the insertion operation of the parallel pipe is convenient, and the connection and fixation of the first plug-in separation plate and the second plug-in separation plate are reliable.

[0014] As an improvement of the present invention, the positioning pin includes a cylindrical positioning pin body and a positioning pin head, the positioning pin body is connected to the positioning pin head, the positioning pin head gradually decreases from the connection to the free end, the maximum diameter of the positioning pin head is the same as the diameter of the positioning pin body, the first positioning hole is a circular through hole or a circular blind hole, and the second positioning hole is a circular through hole or a circular blind hole. With such a structure, the connection and fixation of the first plug-in separation plate and the second plug-in separation plate can be reliable, and the first plug-in separation plate and the second plug-in separation plate can be easily covered and separated.

[0015] Compared with the prior art, the present invention has at least the following technical effects: a parallel tube separation device of the present invention can use the first circular hole groove and the first core column on the first plug-in separation plate to accommodate and position one tube in the parallel tube, and can use the second circular hole groove and the second core column on the second plug-in separation plate to accommodate and position the other tube in the parallel tube. When the parallel tubes are separated, uniform force can be applied to the two tubes of the parallel tube to separate the parallel tubes evenly, which is not easy to be damaged and has a low breakage rate. The conical guide hole composed of the first guide groove and the second guide groove is used to guide the insertion of the parallel tube, so that the parallel tube can be easily inserted into the first circular hole groove and the second circular hole groove.

[0016] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below with reference to the accompanying drawings for detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic structural diagram of a parallel pipe separation device of the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the first plug-in separation board.

[0019] Figure 3 for Figure 2A schematic diagram of the top structure of the first plug-in separation plate.

[0020] Figure 4 for Figure 2 A schematic diagram of the right side structure of the first plug-in separation plate.

[0021] Figure 5 for Figure 2 Schematic diagram of the structure of the first plug-in separation plate with the first core column removed.

[0022] Figure 6 for Figure 5 The schematic diagram of the right side structure of the first plug-in separation plate with the first core column removed.

[0023] Figure 7 for Figure 5 A schematic structural diagram of another angle of the first plug-in separation plate with the first core column removed.

[0024] Figure 8 for Figure 2 Schematic diagram of the structure of the first core column.

[0025] Fig. 9 for Figure 1 Schematic diagram of the structure of the second plug-in separation board.

[0026] Fig.10 for Fig. 9 A schematic diagram of the top structure of the second plug-in separation plate.

[0027] Fig.11 for Fig. 9 A right view structural schematic diagram of the second plug-in separation plate.

[0028] Fig.12 for Fig. 9 Schematic diagram of the structure of the second plug-in separation plate with the second core column removed.

[0029] Fig.13 for Fig. 9 Schematic diagram of the structure of the second core column.

[0030] Fig.14 for Figure 1 Schematic diagram of the structure of the positioning pin. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments (a parallel tube separation device is described below using a double oxygen tube as an example).

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must be provided with a specific position, constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. Figure 1 In this application, "left" and "right" can refer to Figure 3 , Fig.10 Left and right in.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Example 1

[0036] like Figures 1 to 14As shown, a parallel pipe separation device comprises a first plug-in separation plate 1 and a second plug-in separation plate 2 that can be detachably matched. A first circular hole groove 11 is provided on the edge of the top surface of the first plug-in separation plate 1, a first core column 12 arranged along the axial direction of the first circular hole groove 11 is provided in the middle of the first circular hole groove 11, a first guide groove 14 is provided on the outer side of the first circular hole groove 11 on the first plug-in separation plate 1, the first guide groove 14 is tapered, the first guide groove 14 gradually decreases from the outside to the inside, the first circular hole groove 11 is connected to the first guide groove 14, a first opening 13 is provided on the top surface of the first plug-in separation plate 1 at a position corresponding to the first circular hole groove 11 and the first guide groove 14, and the first opening 13 passes through the first guide groove 14 located on the top surface of the first plug-in separation plate 1. The bottom edge of the second plug-in separation plate 2 is provided with a second circular hole groove 21, the middle part of the second circular hole groove 21 is provided with a second core column 22 arranged along the axial direction of the second circular hole groove 21, the outer side of the second circular hole groove 21 on the second plug-in separation plate 2 is provided with a second guide groove 24, the second guide groove 24 is conical, and the second guide groove 24 gradually decreases from the outside to the inside, and a second opening 23 is provided on the bottom surface of the second plug-in separation plate 2 at a position corresponding to the second circular hole groove 21 and the second guide groove 24, and the second opening 23 penetrates the second guide groove 24 located on the bottom surface of the second plug-in separation plate 2. The first plug-in separation plate 1 and the second plug-in separation plate 2 can be connected and fixed by the positioning pin 3, the first circular hole groove 11 and the second circular hole groove 21 can form a parallel tube accommodating cavity for accommodating parallel tubes, and the first core column 12 and the second core column 22 can be inserted into the inner cavity of the parallel tube. In this embodiment, the parallel tube is a double oxygen tube. After the first plug-in separation plate 1 and the second plug-in separation plate 2 are connected and fixed by the positioning pin 3, the first guide groove 14 and the second guide groove 24 can form a conical guide hole for parallel pipe plug-in, and the first guide groove 14 and the second guide groove 24 are mirror-symmetrical. The first plug-in separation plate 1 is provided with a first positioning hole 15 that matches the positioning pin 3, and the second plug-in separation plate 2 is provided with a second positioning hole 25 that matches the positioning pin 3. Preferably, the first guide groove 14 and the second guide groove 24 are conical grooves, and the tapers of the first guide groove 14 and the second guide groove 24 are both 45°-75°, which can provide better guidance for the dual oxygen tube when plugging in, facilitate the plug-in operation of the dual oxygen tube, and make the size of the first plug-in separation plate and the second plug-in separation plate appropriate. More preferably, the taper of the first guide groove 14 and the second guide groove 24 is 60°, and the depth of the guide hole is 10-20 mm, which can better guide the double oxygen tube when plugging, which is very convenient for the plugging operation of the double oxygen tube, and facilitates the standardized production of the first plug-in separation plate and the second plug-in separation plate, reducing costs. The material of the first plug-in separation plate and the second plug-in separation plate is 316 stainless steel or 304 stainless steel, which can prevent the first plug-in separation plate and the second plug-in separation plate from rusting, so that the double oxygen tube is separated into two independent oxygen tubes to meet the requirements of medical and health safety.

[0037] like Figures 1 to 8 As shown, the first plug-in separation plate 1 is a rectangular flat plate, and the first circular hole groove 11 is arranged along the length direction of the first plug-in separation plate 1. The first circular hole groove 11 is located in the middle of the first circular hole groove 11 in the width direction. The first opening 13 is rectangular. The plane formed by the center line of the first opening 13 and the axis line of the first circular hole groove 11 is perpendicular to the top surface of the first plug-in separation plate 1. The first guide groove 14 is a conical groove, and the first guide groove 14 is coaxial with the first circular hole groove 11. The first circular hole groove 11 is connected to the first guide groove 14. The inner diameter of the first circular hole groove 11 is slightly larger than the outer diameter of the oxygen tube. The outer diameter of the first stem 12 is slightly smaller than the inner diameter of the oxygen tube. A first circular through hole 16 is opened in the middle of the bottom surface of the first circular hole groove 11, and the first circular through hole 16 matches the first stem 12, and the first stem 12 can be inserted into the first circular through hole 16. The length of the first stem 12 extending out matches the length of the first circular hole groove 11, and the length of the first stem 12 extending out is 20-50mm. Two first positioning holes 15 are provided at two sides of the first plug-in separation plate 1, and the first positioning holes 15 are circular through holes. Of course, the first positioning holes can also be circular blind holes.

[0038] like Figure 2 , Figure 8 As shown, the first core column 12 includes a cylindrical first core column body 121 and a first core column head 122. The first core column body 121 is connected to the first core column head 122. The first core column head 122 gradually decreases from the connection point to the free end. The maximum diameter of the first core column head 122 (i.e., the connection point) is the same as the diameter of the first core column body 121, and the free end of the first core column head 122 is arc-shaped.

[0039] like Figure 1 , Figures 9 to 13As shown, the second plug-in separation plate 2 is a rectangular flat plate, and the second circular hole groove 21 is arranged along the length direction of the second plug-in separation plate 2. The second circular hole groove 21 is located in the middle of the width direction. The second opening 23 is rectangular. The plane formed by the center line of the second opening 23 and the axis line of the second circular hole groove 21 is perpendicular to the bottom surface of the second plug-in separation plate 2. The second guide groove 24 is a conical groove, and the second guide groove 24 is coaxial with the second circular hole groove 21. The second circular hole groove 21 is connected to the second guide groove 24. The inner diameter of the second circular hole groove 21 is slightly larger than the outer diameter of the oxygen tube. The outer diameter of the second stem 22 is slightly smaller than the inner diameter of the oxygen tube. A second circular through hole 26 is opened in the middle of the bottom surface of the second circular hole groove 21, and the second circular through hole 26 matches the second stem 22, and the second stem 22 can be inserted into the second circular through hole 26. The length of the second stem 22 extending out matches the length of the second circular hole groove 21, and the length of the second stem 22 extending out is 20-50mm. Two second positioning holes 25 are provided on both sides of the second plug-in separation plate 2, and the second positioning holes 25 are circular through holes. When the first plug-in separation plate 1 and the second plug-in separation plate 2 are connected and fixed by the positioning pin 3, the first circular hole groove 11 and the second circular hole groove 21 are in corresponding positions and are connected, and the first circular hole groove 11 and the second circular hole groove 21 form a parallel tube accommodating chamber for accommodating parallel tubes, the first opening 13 and the second opening 23 are in corresponding positions, and the first opening 13 and the second opening 23 form an opening for accommodating the parallel tube connection part, and the first guide groove 14 and the second guide groove 24 are in corresponding positions and are connected, and the first guide groove 14 and the second guide groove 24 form a guide hole for guiding the parallel tube plug-in. The first positioning hole 15 corresponds to the second positioning hole 25, and the first plug-in separation plate 1 and the second plug-in separation plate 2 are the same size. Of course, the second positioning hole can also be a circular blind hole.

[0040] like Fig. 9 , Fig.13 As shown, the second core column 22 includes a cylindrical second core column body 221 and a second core column head 222. The second core column body 221 is connected to the second core column head 222. The second core column head 222 gradually decreases from the connection to the free end. The maximum diameter of the second core column head 222 (i.e., the connection) is the same as the diameter of the second core column body 221, and the free end of the second core column head 222 is arc-shaped.

[0041] like Figure 1 , Fig.14 As shown, the positioning pin 3 includes a cylindrical positioning pin body 31 and a positioning pin head 32. The positioning pin body 31 is connected to the positioning pin head 32. The positioning pin head 32 gradually decreases from the connection to the free end. The maximum diameter of the positioning pin head 32 (i.e., the connection) is the same as the diameter of the positioning pin body 31. In this embodiment, there are two positioning pins 3, which are arranged diagonally.

[0042] The separation operation process of the above parallel pipe separation device is as follows: first, place the first plug-in separation plate 1 on a flat work surface, with the top surface of the first circular hole groove 11 facing upward, insert the positioning pin 3 on the first plug-in separation plate 1 and the second plug-in separation plate 2, cover the second plug-in separation plate 2 on the first plug-in separation plate 1, with the bottom surface of the second circular hole groove 21 facing downward, and connect and fix the first plug-in separation plate 1 and the second plug-in separation plate 2 with the positioning pin 3. Then, insert the double oxygen tube from the guide hole formed by the first guide groove 14 and the second guide groove 24, insert the double oxygen tube into the parallel pipe receiving groove formed by the first circular hole groove 11 and the second circular hole groove 21, and insert the first stem 12 and the second stem 22 into the double oxygen tube at the same time. Separate the first plug-in separation plate 1 and the second plug-in separation plate 2. The first plug-in separation plate 1 and the second plug-in separation plate 2 carry their own oxygen tubes. Tear the double oxygen tube evenly from the connection without damaging the oxygen tube, and obtain two separated oxygen tubes. Then take the oxygen tube out from the first circular hole groove 11 of the first plug-in separation plate 1 and the second circular hole groove 21 of the second plug-in separation plate 2, and the separation of the double oxygen tube is completed.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A parallel pipe separation device, characterized in that: The invention comprises a first plug-in separation plate (1) and a second plug-in separation plate (2); a first circular hole groove (11) is provided on the top surface edge of the first plug-in separation plate (1); a first core column (12) arranged along the axial direction of the first circular hole groove (11) is provided in the middle of the first circular hole groove (11); a first guide groove (14) connected to each other is provided on the outer side of the first circular hole groove (11) on the first plug-in separation plate (1); a first opening (13) is provided on the top surface of the first plug-in separation plate (1) at a position corresponding to the first circular hole groove (11) and the first guide groove (14); a second circular hole groove (21) is provided on the bottom surface edge of the second plug-in separation plate (2); a second core column (22) arranged along the axial direction of the second circular hole groove (21) is provided in the middle of the second circular hole groove (21); a second guide groove (24) connected to each other is provided on the outer side of the second circular hole groove (21) on the second plug-in separation plate (2); A second opening (23) is provided on the bottom surface of the first plug-in separation plate (1) at a position corresponding to the second circular hole groove (21) and the second guide groove (24); the first plug-in separation plate (1) and the second plug-in separation plate (2) can be connected and fixed by a positioning pin (3); the first plug-in separation plate (1) is provided with a first positioning hole (15) matched with the positioning pin (3); the second plug-in separation plate (2) is provided with a second positioning hole (25) matched with the positioning pin (3); after the first plug-in separation plate (1) and the second plug-in separation plate (2) are connected and fixed, the first circular hole groove (11) and the second circular hole groove (21) can form a parallel tube accommodating cavity; the first core column (12) and the second core column (22) can be inserted into the inner cavity of the parallel tube; the first guide groove (14) and the second guide groove (24) can form a conical guide hole for inserting the parallel tube; the first plug-in separation plate (1) and the second plug-in separation plate (2) are made of stainless steel.

2. A parallel pipe separation device as claimed in claim 1, characterized in that: The first core column (12) and the second core column (22) both comprise a cylindrical core column body and a core column head. The core column body is connected to the core column head. The core column head gradually shrinks from the connection point to the free end. The maximum diameter of the core column head is the same as the diameter of the core column body. The free end of the core column head is arc-shaped.

3. A parallel pipe separation device as claimed in claim 1 or 2, characterized in that: The first opening (13) is rectangular, and a plane formed by a center line of the first opening (13) and an axis line of the first circular hole groove (11) is perpendicular to the top surface of the first plug-in separation plate (1); the second opening (23) is rectangular, and a plane formed by a center line of the second opening (23) and an axis line of the second circular hole groove (21) is perpendicular to the bottom surface of the second plug-in separation plate (2).

4. A parallel pipe separation device as claimed in claim 1 or 2, characterized in that: The first guide groove (14) is a conical groove, the first guide groove (14) is coaxial with the first circular hole groove (11), the second guide groove (24) is a conical groove, the second guide groove (24) is coaxial with the second circular hole groove (21), the tapers of the first guide groove (14) and the second guide groove (24) are both 45°-75°, and the first guide groove (14) and the second guide groove (24) are mirror-symmetrical.

5. A parallel pipe separation device as claimed in claim 4, characterized in that: The taper of the first guide groove (14) and the second guide groove (24) are both 60°, and the depth of the guide hole is 10-20 mm.

6. A parallel pipe separation device as claimed in claim 2, characterized in that: A first circular through hole (16) is formed in the middle of the bottom surface of the first circular hole groove (11), the first circular through hole (16) matches with the first core column (12), and the first core column (12) can be inserted into the first circular through hole (16); a second circular through hole (26) is formed in the middle of the bottom surface of the second circular hole groove (21), the second circular through hole (26) matches with the second core column (22), and the second core column (22) can be inserted into the second circular through hole (26).

7. A parallel pipe separation device as claimed in claim 1 or 2, characterized in that: The length of the first circular hole groove (11) is the same as that of the second circular hole groove (21); the length of the first core column (12) extending out matches the length of the first circular hole groove (11); the length of the second core column (22) extending out matches the length of the second circular hole groove (21); and the lengths of the first core column (12) and the second core column (22) extending out are both 20-50 mm.

8. A parallel pipe separation device as claimed in claim 2, characterized in that: The parallel tube is a double oxygen tube, the inner diameter of the first circular hole groove (11) is slightly larger than the outer diameter of the oxygen tube, the outer diameter of the first core column (12) is slightly smaller than the inner diameter of the oxygen tube, the inner diameter of the second circular hole groove (21) is slightly larger than the outer diameter of the oxygen tube, and the outer diameter of the second core column (22) is slightly smaller than the inner diameter of the oxygen tube.

9. A parallel pipe separation device as claimed in claim 1 or 2, characterized in that: The first plug-in separation plate (1) is a rectangular flat plate, the first circular hole groove (11) is arranged along the length direction of the first plug-in separation plate (1), the first circular hole groove (11) is located in the middle of the width direction, and two first positioning holes (15) are arranged at intervals on both sides of the first plug-in separation plate (1). The second plug-in separation plate (2) is a rectangular flat plate, the second circular hole groove (21) is arranged along the length direction of the second plug-in separation plate (2), the second circular hole groove (21) is located in the middle of the width direction, and two second positioning holes (25) are arranged at intervals on both sides of the second plug-in separation plate (2). The first positioning hole (15) corresponds to the second positioning hole (25) in position, and the first plug-in separation plate (1) and the second plug-in separation plate (2) are of the same size.

10. A parallel pipe separation device as claimed in claim 1 or 2, characterized in that: The positioning pin (3) comprises a cylindrical positioning pin body (31) and a positioning pin head (32); the positioning pin body (31) is connected to the positioning pin head (32); the positioning pin head (32) gradually decreases from the connection point to the free end; the maximum diameter of the positioning pin head (32) is the same as the diameter of the positioning pin body (31); the first positioning hole (15) is a circular through hole or a circular blind hole; and the second positioning hole (25) is a circular through hole or a circular blind hole.

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