High-cleanliness sealing air pipe

Abstract

The utility model discloses a high-cleanliness sealing air pipe which comprises a pipe outer layer and a pipe inner layer, the pipe outer layer comprises a left outer layer and a right outer layer, and the left outer layer comprises a first outer layer part and a first end which are integrated; the right outer layer comprises a second outer layer part and a second end which are integrated, the pipe inner layer comprises a left inner layer and a right inner layer, and the left inner layer comprises a first inner layer part and a third end which are integrated; and the right inner layer comprises a second inner layer part and a fourth end head which are integrated. Compared with an existing hose with two layers of end heads exposed in the hose, only one layer of end head is exposed in the hose, the smooth degree of the inner wall of the hose is greatly improved, resistance in the gas transportation process is reduced, and the low-wind-resistance hose has the advantage of being low in wind resistance. Meanwhile, as the first end head and the third end head which are made of the fiber cloth materials are isolated from the space in the pipe, dust, fibers, oil stains and other impurities are not generated in the pipe, and the cleanliness of gas in the pipe is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of hose technical field, specifically a kind of high clean sealing air pipe. BACKGROUND

[0002] In some specific industry fields, such as semiconductor, photovoltaic, medicine, etc., the production process has high requirements on the cleanliness of the incoming air, which requires the inner wall of the air inlet hose to be smooth and clean enough, without dust or fiber falling into the pipe, otherwise it is easy to carry impurities with the gas, thereby seriously affecting the production quality.

[0003] In the above-mentioned air inlet hose, the main structure includes the outer wall and the inner wall. The outer wall layer is usually made of fiber cloth to ensure the tensile strength, tear resistance, wear resistance, softness and flexibility of the outer wall. The inner wall layer is usually made of PET film or PTFE film to ensure the high cleanliness, temperature resistance, chemical stability and aging resistance of the inner wall.

[0004] The cross-sectional view of the existing conventional hose at the joint is shown in Figure 1 The inner and outer layers include four layers of materials. The first outer layer 3 and the first end 6 are the same layer, the second outer layer 8 and the second end 1 are the same layer, and the first outer layer 3, the first end 6, the second outer layer 8 and the second end 1 are all made of fiber cloth. The first outer layer 3 and the second outer layer 8 together form the outer wall of the pipe. The first inner layer 4 and the third end 5 are the same layer, the second inner layer 7 and the fourth end 2 are the same layer, and the first inner layer 4, the third end 5, the second inner layer 7 and the fourth end 2 are all made of PET film or PTFE film. It can be understood that the first inner layer 4 and the second inner layer 7 together form the inner wall layer of the hose. When manufacturing, the four layers of materials are sequentially attached to the end of the joint position of the pipe, and then the pipe clamp is wrapped and clamped tightly.

[0005] The above-mentioned conventional hose has the following defects: (1) As can be seen from the figure, there are two layers of end heads exposed in the pipe, which are the first end 6 and the third end 5. The exposure of the two layers of end heads in the pipe affects the smoothness of the inner wall. (2) The two end heads are in full contact with the gas in the pipe, especially the first end 6 as the outer layer part is usually made of fiber cloth. After a long period of use, the exposed fiber cloth is easy to form dust and become the source of other impurities, which pollutes the gas in the pipe. The low-cleanliness gas will seriously affect the production quality. CONTENT OF THE UTILITY MODEL

[0006] In order to overcome the shortcomings of the prior art, the utility model aims to provide a high-cleanliness sealing air pipe, which can solve the problem of poor inner wall smoothness and gas cleanliness of the existing air pipe.

[0007] The utility model adopts the following technical solutions to realize:

[0008] A high-cleanliness sealed air duct comprises: an outer layer of the duct, comprising a left outer layer and a right outer layer which are mutually jointed at their ends; the left outer layer comprises a first outer layer part and a first end head which are integrally formed; the right outer layer comprises a second outer layer part and a second end head which are integrally formed; an inner layer of the duct, comprising a left inner layer and a right inner layer which are mutually jointed at their ends; the left inner layer comprises a first inner layer part and a third end head which are integrally formed; the right inner layer comprises a second inner layer part and a fourth end head which are integrally formed; in the thickness direction of the duct, the right outer layer, the left outer layer, the left inner layer and the right inner layer are tightly fitted in sequence from outside to inside; in the length direction of the duct, the left outer layer is arranged opposite to the right outer layer, the left inner layer is arranged in the same direction as the left outer layer, and the right inner layer is arranged opposite to the left inner layer, so as to press the first end head and the third end head between the right outer layer and the right inner layer; the second end head is exposed outside the duct, and the fourth end head is exposed inside the duct.

[0009] Further, the outer layer of the duct is any one of a film material, a sheet material or a fiber coating cloth; the film material or the sheet material is any one of the following materials: a film material or a sheet material of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone, rubber; the fiber coating cloth is any one of the following materials: a fiber cloth base of glass fiber, polyester fiber, nylon fiber, aramid fiber, which is coated with any one of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone, rubber.

[0010] Further, the inner layer of the duct is a film material or a sheet material, and the film material or the sheet material is any one of the following materials: a film material or a sheet material of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone, rubber.

[0011] Further, the high-cleanliness sealed air duct further comprises a positioning core; the positioning core is located on one side inside the duct, and the left outer layer, the right outer layer, the left inner layer and the right inner layer are wound on the positioning core in sequence to jointly form a joint structure, so as to isolate the space outside the duct from the space inside the duct.

[0012] Further, the high-cleanliness sealed air duct further comprises a U-shaped metal spiral skeleton; the U-shaped metal spiral skeleton is arranged at the joint position of the duct and is tightly clamped on the outer layer of the duct, so that the left outer layer, the right outer layer, the left inner layer and the right inner layer are tightly jointed.

[0013] Further, in the cross-sectional direction, the end feet of the U-shaped metal spiral skeleton at both ends have a 180° bending part, and the outer side of the bending part forms a smooth arc surface, and the two sides of the bending part jointly compress the outer layer of the pipe on the positioning core.

[0014] Further, the positioning core is a cylindrical iron core.

[0015] Further, a non-metal anti-scald layer is wrapped on the U-shaped metal spiral skeleton.

[0016] Further, a heat insulation material is filled between the second outer layer part and the second inner layer part.

[0017] Further, the heat insulation material is glass fiber or polyester fiber.

[0018] Compared with the prior art, the utility model can achieve the beneficial effects that:

[0019] Since the outer layer of the pipe can adopt a material such as fiber cloth which has good tensile resistance and tear resistance, the wear resistance and softness of the hose are ensured; the inner layer of the pipe can adopt a PET film or a PTFE film, so that the inner wall of the pipe has good high cleanliness, temperature resistance, chemical stability and aging resistance. Through the joint of the four layers of materials, the pipe outside and the pipe inside are well insulated, so that the air pipe has good air tightness and anti-broken performance.

[0020] The structure arrangement mode of the air pipe tightly compresses the first end head and the third end head between the outer layer of the pipe and the inner layer of the pipe, that is, the first end head and the third end head are completely insulated from the pipe, and the second end head is outside the pipe, so that only the fourth end head is exposed to the gas in the pipe.

[0021] (1) Compared with the two layers of end heads exposed in the pipe in the existing hose, only one layer of end head is exposed in the pipe in the utility model, which greatly improves the smoothness of the inner wall of the pipe, reduces the resistance in the gas transportation process, and makes the air pipe have the advantage of low air resistance. (2) At the same time, since the first end head and the third end head of the outer layer of the pipe which usually adopts fiber cloth material are insulated from the pipe space, the original pollution source is equivalent to being removed from the pipe, and there is no dust, fiber, oil stain and other impurities in the pipe, which significantly improves the cleanliness of the gas in the pipe and is more beneficial to the production of certain specific fields such as semiconductors, photovoltaic manufacturing and the like. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the existing hose;

[0023] Figure 2 It is an appearance schematic view of the utility model;

[0024] Figure 3It is a sectional view of the utility model.

[0025] Figure 4 It is a schematic view of another embodiment of the U-shaped metal spiral framework of the utility model.

[0026] In the figure: 10, second end head; 20, second outer layer part; 30, first outer layer part; 40, first end head; 50, first inner layer part; 60, third end head; 70, fourth end head; 80, second inner layer part; 90, U-shaped metal spiral framework; 100, positioning core. DETAILED DESCRIPTION

[0027] In the following, the utility model is further described in combination with the drawings and the specific implementation, and it needs to be explained that, under the premise of not conflicting, the following described embodiments between or the technical features between can be combined to form new embodiments.

[0028] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0030] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] The utility model discloses a kind of high clean sealing air pipe, inner wall and outer wall material can select anti-static or conductive material, make air pipe have anti-static or conductive performance, so that it can be used in the working condition needing anti-static or conductive, prevent the risk generated due to static gathering, can be used for conveying high temperature and active medium, such as high-temperature steam and smoke;It can also be used in low-pressure environment, can be used for strong organic solvent class, high-temperature gas, chemical class waste flue gas extraction, strong corrosive (such as HF fluorinated fluorine gas), strong acid and alkaline, strong oxidation class gas circulation extraction and transportation, can be widely matched and applied in photovoltaic, semiconductor, pharmaceutical, new energy, chemical and its related industries in various fixed or mobile equipment, for example clean air conditioner and extraction type ventilation equipment etc.

[0032] Referring to Figures 2-3 The utility model discloses a kind of high clean sealing air pipe, inner wall and outer wall material can select anti-static or conductive material, make air pipe have anti-static or conductive performance, so that it can be used in the working condition needing anti-static or conductive, prevent the risk generated due to static gathering, can be used for conveying high temperature and active medium, such as high-temperature steam and smoke;It can also be used in low-pressure environment, can be used for strong organic solvent class, high-temperature gas, chemical class waste flue gas extraction, strong corrosive (such as HF fluorinated fluorine gas), strong acid and alkaline, strong oxidation class gas circulation extraction and transportation, can be widely matched and applied in photovoltaic, semiconductor, pharmaceutical, new energy, chemical and its related industries in various fixed or mobile equipment, for example clean air conditioner and extraction type ventilation equipment etc.

[0033] In the thickness direction of pipeline, right outer layer, left outer layer, left inner layer and right inner layer are tightly attached in turn from outside to inside, forming pipe outer and pipe inner space.

[0034] In the length direction of pipeline, left outer layer and right outer layer are oppositely arranged, left inner layer and left outer layer are same direction arranged, right inner layer and left inner layer are oppositely arranged, so that first end head 40 and third end head 60 are tightly pressed in the space between right outer layer and right inner layer, i.e. first end head 40 and third end head 60 are mutually isolated with pipe inner space. Second end head 10 is exposed outside pipe because it is in the outermost layer. Fourth end head 70 is exposed in pipe because it is in the innermost layer.

[0035] Preferably, the outer layer of the tube is any one of a film, a sheet or a coated fiber cloth. The film or sheet is any one of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone, rubber film or sheet. The coated fiber cloth is any one of glass fiber, polyester fiber, nylon fiber, aramid fiber, with any one of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone, rubber coated on the surface of the fiber cloth base.

[0036] Preferably, the inner layer of the tube is a film or a sheet, which is any one of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone, rubber film or sheet.

[0037] The technical effect of the utility model lies in:

[0038] Since the outer layer of the tube can adopt materials such as fiber cloth with good tensile strength and tear resistance, the wear resistance and softness of the hose are ensured; the inner layer of the tube can adopt PET film or PTFE film, so that the inner wall of the tube has good temperature resistance, chemical stability and aging resistance. Through the joint of the four layers of materials, the outer tube and the inner tube are well isolated, so that the air pipe has good air tightness and anti-broken performance.

[0039] The structure arrangement mode of the air pipe tightly crimps the first end head 40 and the third end head 60 between the outer layer and the inner layer of the tube, that is, the first end head 40 and the third end head 60 are completely isolated from the inner tube, and the second end head 10 is outside the tube, so that only the fourth end head 70 is exposed to the inner gas of the tube.

[0040] (1) Compared with the existing hose in which two end heads are exposed in the tube, only one end head is exposed in the tube in the utility model, which greatly improves the smoothness of the inner wall of the tube, reduces the resistance in the gas transportation process, and makes the air pipe have the advantage of low wind resistance. (2) At the same time, since the first end head 40 and the third end head 60 of the outer layer of the tube are commonly made of fiber cloth and are isolated from the inner space of the tube, the original pollution source is equivalent to being removed from the tube, and there is no dust, fiber, oil stain and other impurities in the tube, which significantly improves the cleanliness of the gas in the tube and is more conducive to the production of certain specific fields such as semiconductors and photovoltaic manufacturing.

[0041] Preferably, in a specific embodiment, the outer layer material adopts Teflon coated fiber cloth.

[0042] Preferably, the utility model further includes a positioning core 100, which is located at one side in the pipe. The left outer layer, the left outer layer, the right inner layer and the right outer layer are wound on the positioning core 100 in sequence and polymerized together to jointly form the joint structure of the pipe. Further preferably, the positioning core 100 can adopt a cylindrical iron core, which is beneficial to winding of the layers thereon.

[0043] Preferably, the utility model further includes a U-shaped metal spiral skeleton 90, which is arranged at the joint position of the pipe and is clamped on the outer layer of the pipe, so that the left outer layer, the right outer layer, the left inner layer and the right inner layer are tightly jointed.

[0044] Further preferably, as another embodiment, referring to Figure 4 In the cross-sectional direction, the end feet at both ends of the U-shaped metal spiral skeleton 90 have a bending part of 180°, and the outer side of the bending part forms a smooth arc surface, and the bending parts on both sides jointly press the outer layer of the pipe on the positioning core 100. The advantage of this embodiment is that the outer layer material is pressed by folding the lower end of the U-shaped metal spiral skeleton 90 and forming an arc contact surface, preventing the original sharp corners of the end feet from cutting the fiber cloth, thereby causing scratches, cracks or strength reduction of the pipe.

[0045] Further preferably, the U-shaped metal spiral skeleton 90 is wrapped with a layer of non-metal anti-scald layer, which plays a role of anti-scalding and anti-erosion.

[0046] Preferably, some heat insulation materials or the like can be filled between the second outer layer part 20 and the second inner layer part 80 as needed to enhance the heat insulation performance of the pipe. The heat insulation materials can adopt glass fiber or polyester fiber or the like.

[0047] The above-mentioned embodiments are only preferred embodiments of the utility model, and cannot be used to limit the scope of protection of the utility model. Any non-substantial changes and replacements made by those skilled in the art on the basis of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A high-cleanliness sealed duct, characterized by, The high-cleanliness sealed air pipe comprises: a pipe outer layer, which comprises a left outer layer and a right outer layer that are mutually jointed at the ends; the left outer layer comprises a first outer layer part and a first end head which are integrally formed; the right outer layer comprises a second outer layer part and a second end head which are integrally formed; a pipe inner layer, which comprises a left inner layer and a right inner layer that are mutually jointed at the ends; the left inner layer comprises a first inner layer part and a third end head which are integrally formed; the right inner layer comprises a second inner layer part and a fourth end head which are integrally formed; in the thickness direction of the pipe, the right outer layer, the left outer layer, the left inner layer and the right inner layer are tightly jointed in sequence from outside to inside; in the length direction of the pipe, the left outer layer is arranged opposite to the right outer layer, the left inner layer is arranged in the same direction as the left outer layer, and the right inner layer is arranged opposite to the left inner layer, so as to press the first end head and the third end head between the right outer layer and the right inner layer; the second end head is exposed outside the pipe, and the fourth end head is exposed inside the pipe.

2. The high clean sealable air duct of claim 1, wherein, The pipe outer layer is any one of a film material, a sheet material or a fiber coating cloth; the film material or the sheet material is any one of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone rubber, and a film material or a sheet material of rubber; the fiber coating cloth is any one of a glass fiber, a polyester fiber, a nylon fiber, an aramid fiber, and a fiber cloth base coated with any one of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone rubber and rubber.

3. The high clean sealable air duct of claim 1, wherein, The pipe inner layer is a film material or a sheet material, and the film material or the sheet material is any one of PTFE, PFA, FEP, PVCF, ETFE, PVF, THV, ECTFE, PET, PP, TPU, PE, PA, PVC, PI, TPV, silicone rubber, and a film material or a sheet material of rubber.

4. The high clean sealable air duct of claim 1, wherein, The high-cleanliness sealed air pipe further comprises a positioning core; the positioning core is located on one side inside the pipe, and the left outer layer, the right outer layer, the left inner layer and the right inner layer are wound on the positioning core in sequence to jointly form a joint structure, so as to isolate the space outside the pipe from the space inside the pipe.

5. A high clean sealable air duct as claimed in claim 4, wherein, The high-cleanliness sealed air pipe further comprises a U-shaped metal spiral skeleton; the U-shaped metal spiral skeleton is arranged at the joint position of the pipe and is tightly clamped on the pipe outer layer, so that the left outer layer, the right outer layer, the left inner layer and the right inner layer are tightly jointed.

6. A high clean sealable air duct as claimed in claim 5, wherein, In the cross-sectional direction, the end feet at both ends of the U-shaped metal spiral skeleton have a bending part of 180°, and the outer side of the bending part forms a smooth arc surface, and the bending parts on both sides jointly press the pipe outer layer on the positioning core.

7. The high clean sealable air duct of claim 4, wherein, The positioning core is a cylindrical iron core.

8. The high clean sealable air duct of claim 5, wherein, The U-shaped metal spiral skeleton is wrapped with a non-metal anti-scald layer.

9. The high clean sealable air duct of claim 1, wherein, Thermal insulation materials are filled between the second outer layer part and the second inner layer part.

10. A high clean sealable air duct as claimed in claim 9, wherein, The thermal insulation materials are glass fibers or polyester fibers.

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