Solar vacuum tube exhaust clamping device

Abstract

The utility model discloses a solar vacuum tube exhaust clamping device, which relates to the technical field of cable head manufacturing, is used for clamping a glass tail tube of a vacuum tube, and comprises an exhaust tube for supporting the inner wall of the glass tail tube, an outer reducer tube sleeved on the outer wall of the glass tail tube, and a reducing assembly arranged on the exhaust tube, and meanwhile, a reducing control mechanism is connected to one end of the exhaust pipe and one end of the outer reducing pipe, the reducing mechanism is provided with an inner pipe communicated with the exhaust pipe, and the inner pipe is connected with the vacuumizer. The piston in the cylinder body is pushed by the electric push rod to press gas in the barrel into the inner side of the first rubber film sleeve and the inside of the outer reducer pipe, so that the first rubber film sleeve bulges to support the inner wall of the glass tail pipe, and the second rubber film sleeve bulges to support the inner wall and the outer wall of the glass tail pipe, so that the inner wall and the outer wall of the glass tail pipe are supported and sealed; and the fragmentation of the glass tail pipe in the vacuumizing process is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solar energy equipment production technical field, more particularly in a kind of solar vacuum tube exhaust clamping device. BACKGROUND

[0002] In the manufacturing process of solar vacuum tube, after inner and outer tube assembly and sealing, it needs to be vacuumized. The round head end of vacuum tube is designed with glass tail pipe as the channel of vacuumizing. Vacuumizing machine extracts air in tube through the glass tail pipe until the required vacuum degree is reached. Subsequently, glass tail pipe is fused by using spray gun, realizes the closure of vacuum tube, completes the vacuumizing process.

[0003] Sealing and clamping of glass tail pipe is crucial in the process of vacuumizing. Clamping vacuum tail pipe can ensure that gas in vacuum tube does not leak to the external environment through tail pipe during vacuumizing process, and clamping vacuum tail pipe can also ensure that vacuumizing equipment can work normally and achieve the expected vacuumizing effect.

[0004] The clamping equipment currently adopted mainly implements clamping action from the outside of glass tail pipe. This design has a significant defect, i.e. lack of effective support for the inner wall of glass tail pipe. Since glass tail pipe itself is relatively fragile, if the clamping force from the outside is too large, it is easy to cause tail pipe to break, thereby causing air leakage problem. If the clamping force is too small, it cannot ensure the sealing between tail pipe and vacuumizing equipment, and air leakage phenomenon will also occur. INVENTION CONTENTS

[0005] In order to overcome the problems in the background art, the utility model provides a kind of solar vacuum tube exhaust clamping device.

[0006] To achieve the above-mentioned purpose, the utility model is realized by the following technical scheme: a kind of solar vacuum tube exhaust clamping device is used to clamp vacuum tube glass tail pipe, comprising: supporting the inner wall of the glass tail pipe, the outer variable diameter pipe of the glass tail pipe, the variable diameter component on the air pipe, the variable diameter control mechanism connected to the air pipe and the outer variable diameter pipe one end variable diameter control mechanism, the variable diameter control mechanism is provided with the inner tube connected with the air pipe, and the inner tube is connected with vacuumizing machine.

[0007] Preferably, two annular rings are provided on the air pipe, the variable diameter component is provided between the annular rings, the variable diameter component is a first rubber film sleeve with a gap on the side wall of the air pipe, and a first circular hole is provided on the annular ring close to the variable diameter control mechanism side to communicate with the gap.

[0008] Preferably, the outer variable-diameter pipe comprises: an inner hollow cylinder, a second circular hole arranged at the center of the upper and lower bottom surfaces of the cylinder, a second rubber film sleeve arranged inside the cylinder and connecting the upper and lower bottom surfaces, and a third circular hole arranged on the bottom surface of the cylinder close to the variable-diameter control mechanism.

[0009] Preferably, the variable-diameter control mechanism comprises: a cylinder arranged concentrically with the outer variable-diameter pipe, a first circular pipe arranged on the bottom surface of the cylinder and communicating with the first circular hole, a second circular pipe arranged on the bottom surface of the cylinder and communicating with the third circular hole, a cylinder body arranged on the side wall of the cylinder and communicating with the inside of the cylinder, a piston arranged in the cylinder body, an electric push rod arranged at the other end of the cylinder body and connected with the piston through a piston rod; and a sealing cover arranged at the opening of the cylinder.

[0010] Preferably, the inner pipe penetrates the cylinder from the outside of the sealing cover and is connected with the air exhaust pipe.

[0011] Preferably, a one-way valve is arranged on the inner pipe.

[0012] Compared with the prior art, the utility model has the beneficial effects of:

[0013] The utility model discloses a piston is pushed in the cylinder body through the electric push rod, and the gas in the cylinder is pressed into the inside of the first rubber film sleeve and the inside of the outer variable-diameter pipe, so that the first rubber film sleeve is inflated to support the inner wall of the glass tail pipe, the second rubber film sleeve is inflated to support the outer wall of the glass tail pipe, the support and sealing of the inner and outer walls of the glass tail pipe are completed, and the breakage of the glass tail pipe in the vacuumizing process is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the solar vacuum tube exhaust clamping device.

[0015] Fig. 2 It is a sectional structure schematic view of the solar vacuum tube exhaust clamping device.

[0016] Fig. 3 It is a structural schematic view of the outer variable-diameter pipe.

[0017] Fig. 4 It is a structural schematic view of the air exhaust pipe.

[0018] In the drawing: glass tail pipe 1, air exhaust pipe 2, outer variable-diameter pipe 3, inner pipe 4, circular ring 5, first rubber film sleeve 6, first circular hole 7, second circular hole 8, second rubber film sleeve 9, third circular hole 10, cylinder 11, first circular pipe 12, second circular pipe 13, cylinder body 14, piston 15, piston rod 16, electric push rod 17, sealing cover 18, one-way valve 19. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the preferred embodiments of the utility model will be described in detail below, so as to facilitate the understanding of technicians.

[0020] Please refer to Figs. 1 to 4 The utility model provides a kind of solar vacuum tube exhaust clamping device for clamping vacuum tube glass tail pipe 1 clamping, comprising: the inner wall of the glass tail pipe 1 is supported by suction pipe 2, outer variable diameter pipe 3 is sleeved on the outer wall of the glass tail pipe 1, variable diameter component is arranged on the suction pipe 2, and variable diameter control mechanism is simultaneously connected at one end of the suction pipe 2 and the outer variable diameter pipe 3, the variable diameter control mechanism is equipped with the inner tube 4 being communicated with the suction pipe 2, and the inner tube 4 is connected with vacuumizing machine.

[0021] Two annular rings 5 are arranged on the suction pipe 2, the variable diameter component is arranged between the annular ring 5, the variable diameter component is first rubber film sleeve 6 with gap being arranged on the side wall of the suction pipe 2, and first circular hole 7 being communicated with the gap is arranged on the annular ring 5 close to the variable diameter control mechanism side. Gas is injected from first circular hole 7 to make first rubber film sleeve 6 swell, the outer diameter of suction pipe 2 is increased, and the inner wall of glass tail pipe 1 is supported.

[0022] The outer variable diameter pipe 3 includes: hollow cylinder, second circular hole 8 is arranged at the center of upper and lower bottom surface of the cylinder, second rubber film sleeve 9 is arranged in the interior of the cylinder and is connected with the upper and lower bottom surface, and third circular hole 10 is arranged on the bottom surface of the cylinder close to the variable diameter control mechanism side. Gas is injected from third circular hole 10 to make second rubber film sleeve 9 swell, and the inner diameter of outer variable diameter pipe 3 is reduced to clamp the outer wall of glass tail pipe 1.

[0023] The variable diameter control mechanism includes: barrel 11 is concentrically arranged with the outer variable diameter pipe 3, first circular pipe 12 is arranged on the bottom surface of the barrel 11 and is communicated with the first circular hole 7, second circular pipe 13 is arranged on the bottom surface of the barrel 11 and is communicated with the third circular hole 10, cylinder body 14 is arranged on the side wall of the barrel 11 and is communicated with the inside of the barrel 11, piston 15 is arranged in the cylinder body 14, electric push rod 17 is arranged at the other end of the cylinder body 14, and piston rod 16 is connected with the piston 15; sealing cover 18 is arranged at the opening of the barrel 11. Electric push rod 17 drives piston 15 to move in cylinder body 14, and the gas in cylinder body 14 is pushed into barrel 11, the gas is injected from first circular pipe 12 into first circular hole 7 to make first rubber film sleeve 6 swell, and at the same time, the gas is injected from second circular pipe 13 into third circular hole 10, second rubber film sleeve 9 swells, and the inner and outer diameters of glass tail pipe 1 are clamped and sealed.

[0024] The inner tube 4 is connected with the air exhaust pipe 2 through the cylinder 11 from the outside of the sealing cover 18. The inner tube 4 is provided with a one-way valve 19. The vacuum pump is connected with the one-way valve 19 first, and the connection with the vacuum pump can be disconnected after the vacuum is completed. The one-way valve 19 prevents gas backflow and facilitates the fuse sealing of the glass tail pipe 1.

[0025] The solar vacuum tube exhaust clamping device of the utility model is used:

[0026] The control electric push rod drives the piston 15 to extract the gas in the cylinder 11, the outer diameter of the air exhaust pipe 2 is reduced, the inner diameter of the outer variable diameter pipe 3 is also reduced, the glass tail pipe 1 is inserted between the air exhaust pipe 2 and the outer variable diameter pipe 3, the control electric push rod drives the piston 15 to inject the gas into the cylinder 11, the gas enters the first circular hole 7 from the first circular pipe 12 to make the first rubber film sleeve 6 swell, at the same time, the gas enters the third circular hole 10 from the second circular pipe 13, the second rubber film sleeve 9 swells, the inner and outer diameters of the glass tail pipe 1 are clamped and sealed, the vacuum pump is connected with the one-way valve 19, the vacuum pump is started to extract the gas in the vacuum pipe, the vacuum degree is determined according to the air pressure sensor on the vacuum pump, and the connection between the vacuum pump and the one-way valve 19 is disconnected after the vacuum degree reaches the standard; after the glass tail pipe 1 is fused and sealed, the control electric push rod drives the piston 15 to extract the gas in the cylinder 11, the outer diameter of the air exhaust pipe 2 is reduced, the inner diameter of the outer variable diameter pipe 3 is also reduced, and the glass tail pipe 1 is pulled out from between the air exhaust pipe 2 and the outer variable diameter pipe 3.

[0027] Finally, it is pointed out that the above preferred embodiments are only used for describing the technical scheme of the utility model and not for limiting. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the range defined by the claims of the utility model.

Claims

1. A solar evacuated tube exhaust clamping device for clamping an evacuated tube glass tail pipe (1), characterized in that, The application relates to a glass tail pipe (1) and a vacuum pump (2) supporting the inner wall of the glass tail pipe (1), an outer variable-diameter pipe (3) sleeved on the outer wall of the glass tail pipe (1), a variable-diameter assembly arranged on the vacuum pump (2), a variable-diameter control mechanism connected to one end of the vacuum pump (2) and the outer variable-diameter pipe (3), the variable-diameter control mechanism being provided with an inner pipe (4) communicated with the vacuum pump (2), and the inner pipe (4) being connected with a vacuum pump. Two annular rings (5) are arranged on the vacuum pump (2), the variable-diameter assembly is arranged between the annular rings (5), the variable-diameter assembly is a first rubber film sleeve (6) with a gap arranged on the side wall of the vacuum pump (2), and a first circular hole (7) communicated with the gap is arranged on the annular ring (5) close to the variable-diameter control mechanism.

2. A solar evacuated tube clamping device as claimed in claim 1, wherein, The outer variable-diameter pipe (3) comprises a hollow cylinder, a second circular hole (8) arranged at the center of the upper and lower bottom surfaces of the cylinder, a second rubber film sleeve (9) arranged in the interior of the cylinder and connected with the upper and lower bottom surfaces, and a third circular hole (10) arranged on the bottom surface of the cylinder close to the variable-diameter control mechanism.

3. A solar evacuated tube clamping device as claimed in claim 2, wherein, The variable-diameter control mechanism comprises a cylinder (11) concentrically arranged with the outer variable-diameter pipe (3), a first circular pipe (12) arranged on the bottom surface of the cylinder (11) and communicated with the first circular hole (7), a second circular pipe (13) arranged on the bottom surface of the cylinder (11) and communicated with the third circular hole (10), a cylinder body (14) arranged on the side wall of the cylinder (11) and communicated with the interior of the cylinder (11), a piston (15) arranged in the cylinder body (14), an electric push rod (17) arranged on the other end of the cylinder body (14) and with a piston rod (16) connected with the piston (15), and a sealing cover (18) arranged at the opening of the cylinder (11).

4. A solar evacuated tube clamping device as claimed in claim 3, wherein, The inner pipe (4) is connected with the vacuum pump (2) by penetrating the cylinder (11) from the outside of the sealing cover (18).

5. A solar evacuated tube clamping device as claimed in claim 4, wherein, A one-way valve (19) is arranged on the inner pipe (4).

6. A solar evacuated tube clamping device as claimed in claim 5, wherein, ​

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