Solar vacuum tube sealing device
By designing a combination of a sealing sleeve and a concave spherical heating source, the problem of uneven heating during the sealing process of glass tubes was solved, the sealing yield of vacuum tubes was improved, and glass tube breakage was avoided.
Patent Information
- Application Number
- CN202422983027.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In existing technologies, uneven heating during the sealing process of glass tubes can easily lead to seal damage, reducing the yield of vacuum tubes.
The design employs a sealing sleeve, with one end open and the other end equipped with a heating source. A pressure relief hole is also provided at the open end. The vacuum glass tube is heated evenly using a concave spherical heating source, and the glass tube is gradually tightened and sealed through a telescopic connecting rod and collar.
This method achieves uniform heating of the vacuum glass tube, avoids temperature unevenness at the sealing point, improves the yield of sealing products, and reduces the risk of glass tube breakage.
Smart Images
Figure CN223481042U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of solar energy technology, specifically relating to a solar vacuum tube sealing device. Background Technology
[0002] In the manufacturing of solar vacuum tubes, the ends of the glass tubes need to be sealed to create a sealed structure at both ends of the vacuum tube.
[0003] In the existing technology, a conical tool is used to squeeze and close the opening of the glass tube after heating when sealing the tube. However, this process is carried out in multiple steps. Uneven heating is prone to occur during the closing process, which can lead to seal damage and reduce the yield of vacuum tube sealing products. Utility Model Content
[0004] To address the problems existing in the prior art, this utility model provides a device for completely sealing solar vacuum tubes and improving yield.
[0005] To achieve the above technical objectives, the present invention adopts the following technical solution:
[0006] A sealing device for a solar vacuum tube includes a sealing sleeve 1 and a fixing device 2. One end of the sealing sleeve 1 is an open end 11, and the other end is provided with a heating source 12. A pressure relief hole 13 is provided next to the heating source 12 to connect the open end 11 with the outside. The fixing device 2 includes a support plate 21, a connecting rod 22, and a collar 23. The support plate 21 is fixed on the non-open end 11 of the sealing sleeve 1, and the collar 23 is connected to the support plate 21 through the telescopic connecting rod 22.
[0007] Furthermore, the opening 11 of the sealing sleeve 1 is a concave spherical surface, and the nozzle of the heating source 12 is located at the apex of the sphere.
[0008] According to the above technical solution, the beneficial effects of this utility model are as follows: This utility model uses a spherical sealing sleeve to tighten and seal the heated and softened vacuum glass tube, avoiding leakage caused by repeated squeezing and tightening. At the same time, the heating source in the sealing sleeve can make the vacuum glass tube evenly heated, avoiding uneven heating that could cause changes in internal stress and breakage of the glass tube. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall structure of a solar vacuum tube sealing device;
[0010] Figure 2 This is a schematic diagram of the internal structure of a solar vacuum tube sealing device;
[0011] 1-Sealing sleeve; 11-Open opening; 12-Heating source; 13-Pressure relief hole; 2-Fixing device; 21-Support plate; 22-Connecting rod; 23-Collar ring. Detailed Implementation
[0012] To more clearly illustrate the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments.
[0013] See Figure 1-2 A solar vacuum tube sealing device includes a sealing sleeve 1 and a fixing device 2.
[0014] See Figure 1-2 The sealing sleeve 1 has an open end 11 and a heating source 12 at the other end. A pressure relief hole 13 is provided next to the heating source 12 to connect the open end 11 with the outside. The heating source 11 heats the vacuum tube 3 in the sealing sleeve 1 to soften the glass, making it easier to seal the vacuum tube 3. The pressure relief hole 13 prevents the high temperature and pressure inside the sealing sleeve 1 from causing it to burst.
[0015] See Figure 1-2 The fixing device 2 includes a support plate 21, a connecting rod 22, and a collar 23. The support plate 21 is fixed on one end of the non-open end 11 of the sealing sleeve 1. The collar 23 is connected to the support plate 21 through the telescopic connecting rod 22. During the sealing stage, the connecting rod 22 drives the collar 23 to retract towards the sealing sleeve 1, pushing the vacuum tube into the sealing sleeve 1 to seal the vacuum tube.
[0016] See Figure 1-2 The opening 11 of the sealing sleeve 1 is a concave spherical surface. The nozzle of the heating source 12 is located at the apex of the spherical surface. The heating source 11 located at the apex can uniformly heat the wall of the vacuum tube 3 during the sealing stage, avoid uneven temperature in different parts of the tube wall, eliminate internal stress, and prevent the tube wall from cracking when tightening.
[0017] According to the above embodiments, the working process of this utility model is as follows:
[0018] Insert the vacuum tube to be sealed into the collar 23, and insert the sealing end into the opening 11 of the sealing sleeve 1. Turn on the heating source 12 to heat and soften the outer opening of the vacuum tube, and heat the tube wall of the vacuum tube evenly with the heating source 12 in the center to eliminate the temperature difference inside the glass and avoid stress. After the glass gradually softens to a certain extent, the connecting rod 22 drives the collar 23 to retract towards the sealing sleeve 1, slowly pushing the vacuum tube into the sealing sleeve 1 deeper, so that the softened glass tube opening gradually tightens with the concave spherical surface to seal.
[0019] The above-disclosed embodiments of the present invention are only for illustrating the present invention. The preferred embodiments do not describe all details exhaustively, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A sealing device for a solar vacuum tube, characterized in that: Includes sealing sleeve (1) and fixing device (2); The sealing sleeve (1) has an open end (11) and a heating source (12) at the other end. A pressure relief hole (13) is provided next to the heating source (12) to connect the open end (11) with the outside. The fixing device (2) includes a support plate (21), a connecting rod (22), and a collar (23). The support plate (21) is fixed on one end of the non-open (11) of the sealing sleeve (1), and the collar (23) is connected to the support plate (21) through the telescopic connecting rod (22).
2. The solar vacuum tube sealing device according to claim 1, characterized in that: The opening (11) of the sealing sleeve (1) is a concave spherical surface, and the nozzle of the heating source (12) is located at the apex of the spherical surface.