Sealing device for test hole of temperature and humidity verification box
By using a flexible sealing cylinder at the test line hole of the temperature and humidity verification box and using its rotary clamping test line method, the problem of poor sealing at the test line hole is solved, and a better sealing effect is achieved.
Patent Information
- Application Number
- CN202423214632.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The sealing effect at the test line holes of the existing temperature and humidity verification box is poor, resulting in large gaps and affecting the accuracy of temperature and humidity detection.
A flexible sealing cylinder is used to clamp the test line through the characteristics of its reverse rotation and shrinking in the middle after the two ends are reversely rotated, reducing gaps and enhancing the sealing effect.
It effectively reduces the gaps in the test line holes and improves the sealing effect of the temperature and humidity verification box.
Smart Images
Figure CN223242053U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of temperature and humidity measuring equipment, in particular to a test hole sealing device for a temperature and humidity calibration box. Background Art
[0002] The temperature and humidity calibration box is used to detect and calibrate the performance of products under specified temperature or humidity. When the temperature and humidity calibration box is tested, the interior needs to be sealed, and the side walls of the calibration box also need to be added with insulation and moisture-proof layers to avoid affecting the accuracy of the internal temperature and humidity. The temperature and humidity sensors are placed in the calibration box, and the products and temperature and humidity sensors are connected to the external test host through multiple test wires and sensor wires. The test wire holes on the temperature and humidity calibration box for the test wires and sensor wires to pass through have a large number of gaps between the wires and the wires and between the wires and the holes when the test wires and sensor wires are bundled. These gaps will make it difficult to seal the temperature and humidity calibration box. The existing porous plug has poor sealing effect because the wires have different diameters and quantities, and the sealing effect is poor. Therefore, a suitable sealing device or structure is needed to minimize the gaps and enhance the sealing effect. Utility Model Content
[0003] The utility model provides a test hole sealing device for a temperature and humidity calibration box, which clamps the test line by utilizing the characteristic that the middle part of a flexible sealing cylinder contracts after the two ends rotate in opposite directions, thereby reducing gaps and enhancing the sealing effect at the test line hole.
[0004] To this end, the present invention provides the following technical solutions:
[0005] A sealing device for a test hole of a temperature and humidity calibration box comprises a calibration box body, a test line connecting the inside and outside of the calibration box body, a test line hole provided on the side wall of the calibration box body, the test line passing through the test line hole, a sealing device provided in the test hole, and the test line passing through the sealing device; the sealing device comprises an inner sealing ring, an outer sealing ring, a flexible sealing tube, and a sealing end; the inner sealing ring is fixed on the inside of the calibration box body and at the opening of the test line hole; the outer sealing ring is fixed on the outside of the calibration box body and at the opening of the test line hole; the flexible sealing tube is provided in the test line hole; one end of the flexible sealing tube is sealingly connected to the inner sealing ring, and the other end of the flexible sealing tube is sealingly connected to the sealing end head, and the sealing end head is rotatably connected to the outer sealing ring; the flexible sealing tube rotatably clamps the test line, and after the flexible sealing tube clamps the test line, the sealing end head is positioned and connected to the outer sealing ring.
[0006] In this solution, the flexible sealing tube is made of air-proof material, one end of the flexible sealing tube is connected to a fixed inner sealing ring, and the other end is connected to a sealing end head, and the sealing end head is rotatably connected to a fixed outer sealing ring. When the sealing end head is rotated, the middle part of the flexible sealing tube will be tightened, so that the flexible sealing tube and the test line will become tighter and tighter. When the sealing end head can no longer rotate, the sealing end head will be positioned and connected to the outer sealing ring. At this time, the two ends of the flexible sealing tube are respectively sealed with the inner sealing ring and the outer sealing ring, which not only seals the test line hole, but also squeezes the test line after being tightened in the middle, greatly reducing the gap between the lines and improving the sealing effect at the test line hole.
[0007] As a preferred solution of the present invention, the sealing connection between the flexible sealing tube and the sealing end head and the inner sealing ring is a clamp connection, and the two end ports of the flexible sealing tube are respectively sleeved on the outside of the sealing end head and the inner sealing ring, and the clamp presses and seals the flexible sealing tube, the sealing end head and the inner sealing ring. In this scheme, the outer sealing ring, the inner sealing ring and the calibration box are sealed, and the sealing end is rotatably connected to the outer sealing ring. The flexible sealing tube can be sleeved on the ports of the inner sealing ring and the sealing end. Reverse connecting sleeves are provided at both ends of the flexible sealing tube, that is, a reversed concave sleeve is provided at the port. The flexible sealing tube passes through the inner holes of the inner sealing ring and the outer sealing ring and is then connected to the reverse connecting sleeve to be sleeved on the outer circumference of the inner sealing ring and the sealing end. The reverse connecting sleeve of the flexible sealing tube is then pressed against the outer surface of the port of the inner sealing ring and the sealing end by a clamp connection, and a flexible sealing tube channel is formed in the test hole of the calibration box. The inner channel of the flexible sealing tube and the test hole itself are sealed (the flexible sealing tube itself is airtight). The test line passes through the flexible sealing tube. Sufficient length of the flexible sealing tube is reserved in the test line hole. In this way, the flexible sealing tube can be tightened and tightly attached to the outside of the test line, reducing the gap between the test lines and improving the sealing effect.
[0008] As a preferred embodiment of the present invention, the outer sealing ring is provided with an annular boss, and one end of the sealing end head is provided with a connecting ring boss that mates with the inner diameter of the annular boss. The annular boss and the connecting ring boss are threadedly connected and positioned with a set screw. The other end of the sealing end head is sealingly connected to the flexible sealing sleeve. This embodiment provides a connection structure between the sealing end head and the outer sealing ring. The threaded connection facilitates rotation of the sealing end head. Once rotated into position (and the flexible sealing sleeve is tightened), the set screw is threadedly connected to the annular boss and passed through the annular boss to press against the sealing end head, preventing the threaded connection between the sealing end head and the outer sealing ring from loosening.
[0009] As a preferred embodiment of the present invention, the outer sealing ring is provided with two sealing sheets that fit together, the two sealing sheets being fixedly connected and forming an annular cavity therein. A rotating sheet is provided at one end of the sealing end head, the rotating sheet being disposed within the annular cavity and rotatable, and the rotating sheet and the sealing sheet located on the outside being positioned and connected by a set screw. This embodiment is another connection structure between the sealing end head and the outer sealing ring. The rotating sheet at one end of the sealing end head is rotatable within the cavity within the outer sealing ring, and when rotated, it can drive the flexible sealing tube to tighten or loosen. After tightening, the rotating sheet and the outer sealing sheet can be pressed and fixed by a set screw to prevent loosening. The set screw is threadedly connected to the sealing sheet on the outside of the outer sealing ring and passes through the sealing sheet to support the rotating sheet.
[0010] As a preferred embodiment of the present invention, the flexible sealing tube is made of Oxford cloth, PVC cloth, or polyester taffeta. Oxford cloth, PVC cloth, or polyester taffeta are relatively airtight materials that can be twisted and loosened without deformation. Other existing materials may also be used as long as they meet the requirements of airtightness, flexibility, and the ability to be twisted and loosened without deformation.
[0011] As a preferred embodiment of the present invention, multiple test lines are provided, each of which is provided with a silicone hose outside the portion through which it passes. Multiple test lines are also provided with silicone sleeves outside the portions through which they pass. The test lines have a relatively hard surface and do not deform even after being squeezed, making it difficult to reduce the gaps between the test lines and the flexible sealing tube, and between the test lines. In this embodiment, the portion through which the test lines pass is covered with a silicone hose and a silicone sleeve. When the test lines are squeezed, both the silicone sleeve and the silicone hose deform, thereby reducing the gaps between the silicone sleeve and the silicone hose, and between the silicone hoses.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] The flexible sealing tube is used to clamp the test line by shrinking in the middle after the two ends rotate in opposite directions, reducing the gap and enhancing the sealing effect at the test line hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural diagram of the present utility model.
[0015] Figure 2 This is another structural diagram of the present utility model.
[0016] Figure 3 It is a schematic diagram of the structure of the flexible sealing cylinder being twisted in the utility model.
[0017] In the figure: 1. Calibration box 2. Test line 3. Test line hole 4. Inner sealing ring
[0018] 5. Outer sealing ring 6. Flexible sealing tube 7. Sealing end 8. Hoop
[0019] 9. Annular boss 10. Connecting ring 11. Set screw
[0020] 12. Sealing plate 13. Annular cavity 14. Rotating plate
[0021] 15. Silicone hose 16. Silicone sleeve. DETAILED DESCRIPTION
[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] See also Figure 1-Figure 3 ,
[0024] A sealing device for a test hole of a temperature and humidity calibration box comprises a calibration box body 1, a test line 2 connecting the inside and outside of the calibration box body 1, a test line hole 3 is provided on the side wall of the calibration box body 1, the test line 2 passes through the test line hole 3, a sealing device is provided in the test hole 3, and the test line 2 passes through the sealing device; the sealing device comprises an inner sealing ring 4, an outer sealing ring 5, a flexible sealing tube 6, and a sealing end 7, the inner sealing ring 4 is fixed on the inside of the calibration box body 1 and at the opening of the test line hole 3, the outer sealing ring 5 is fixed on the outside of the calibration box body 1 and at the opening of the test line hole 3, the flexible sealing tube 6 is provided in the test line hole 3, one end of the flexible sealing tube 6 is sealed with the inner sealing ring 4, and the other end of the flexible sealing tube 6 is sealed with the sealing end 7, and the sealing end 7 is rotatably connected to the outer sealing ring 5; the flexible sealing tube 6 rotates to clamp the test line 2, and after the flexible sealing tube 6 clamps the test line 2, the sealing end 7 is positioned and connected to the outer sealing ring 5.
[0025] The sealing connection between the flexible sealing tube 6 and the sealing end head 7 and the inner sealing ring 4 is a clamp connection. The ends of the flexible sealing tube 6 are respectively sleeved on the outside of the sealing end head 7 and the inner sealing ring 4, and the clamp 8 presses the flexible sealing tube 6 and the sealing end head 7 and the inner sealing ring 4 to seal.
[0026] The outer sealing ring 5 is provided with an annular boss 9, and one end of the sealing end head 7 is provided with a connecting ring platform 10 that matches the inner diameter of the annular boss 9. The annular boss 9 is threadedly connected to the connecting ring platform 10 and is provided with a set screw 11 for positioning. The other end of the sealing end head 7 is sealed and connected to the flexible sealing cylinder 6; Figure 1The sealing end head 7 is connected to the outer sealing ring 5 by a threaded connection, which facilitates the rotation of the sealing end head 7. After it is rotated into place, the flexible sealing tube 6 is tightened, and the set screw 11 is threadedly connected to the annular boss 9 and passes through the annular boss 9 to be pressed onto the sealing end head 7, which can prevent the threaded connection between the sealing end head 7 and the outer sealing ring 5 from loosening.
[0027] The outer sealing ring 5 is provided with two sealing sheets 12 that fit together. The two sealing sheets 12 are fixedly connected and form an annular cavity 13 inside. A rotating sheet 14 is provided at one end of the sealing end 7. The rotating sheet 14 is arranged in the annular cavity 13 and can rotate. The rotating sheet 14 is positioned and connected to the sealing sheet 12 located on the outside by a set screw. Figure 2 In the connection structure between the sealing end head 7 and the outer sealing ring 5, the rotating piece 14 at one end of the sealing end head 7 can rotate in the annular cavity 13 inside the outer sealing ring 5. When rotating, it can drive the flexible sealing tube 6 to tighten or loosen. After tightening, the rotating piece 14 and the outer sealing piece can be pressed and fixed with a set screw to prevent loosening. The set screw is threadedly connected to the sealing piece 12 on the outside of the outer sealing ring 5 and passes through the sealing piece 12 to support the rotating piece 14.
[0028] The flexible sealing tube 6 is made of Oxford cloth, PVC cloth or polyester taffeta.
[0029] There are multiple test lines 2 , and a silicone hose 15 is provided on the outside of the portion where each test line 2 passes through the test line hole 3 . A silicone sleeve 16 is also provided on the outside of the portion where multiple test lines 2 pass through the test line hole 3 .
[0030] The working principle and usage process of the utility model are as follows: the flexible sealing tube 6 is made of air-proof material, one end of the flexible sealing tube 6 is connected to the fixed inner sealing ring 4, and the other end is connected to the sealing end head 7, and the sealing end head 7 is rotatably connected to the fixed outer sealing ring 5. When the sealing end head 7 is rotated, the middle part of the flexible sealing tube 6 will be tightened, so that the flexible sealing tube 6 and the test line 2 will be closer and closer. When the sealing end head 7 can no longer rotate, the sealing end head 7 and the outer sealing ring 5 are positioned and connected. At this time, the two ends of the flexible sealing tube 6 are respectively sealed with the inner sealing ring 4 and the outer sealing ring 5, which not only seals the test line hole 3, but also squeezes the test line 2 after being tightened in the middle, greatly reducing the gap between the lines and improving the sealing effect at the test line hole 3.
[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A test hole sealing device for a temperature and humidity calibration box, comprising a calibration box body, a test line connecting the interior and exterior of the calibration box body, a test line hole provided on the side wall of the calibration box body, through which the test line passes, and characterized by: A sealing device is provided in the test hole, and the test line passes through the sealing device; The sealing device includes an inner sealing ring, an outer sealing ring, a flexible sealing cylinder, and a sealing end head. The inner sealing ring is fixed to the inner side of the calibration box body and the opening of the test line hole. The outer sealing ring is fixed to the outer side of the calibration box body and the opening of the test line hole. The flexible sealing cylinder is arranged in the test line hole. One end of the flexible sealing cylinder is sealed with the inner sealing ring, and the other end of the flexible sealing cylinder is sealed with the sealing end head. The sealing end head is rotatably connected to the outer sealing ring. The flexible sealing tube is rotated to clamp the test line. After the flexible sealing tube clamps the test line, the sealing end is positioned and connected with the outer sealing ring.
2. A temperature and humidity calibration box test hole sealing device according to claim 1, characterized in that: The sealing connection between the flexible sealing tube and the sealing end head and the inner sealing ring is a clamp connection. The two end ports of the flexible sealing tube are respectively sleeved on the outside of the sealing end head and the inner sealing ring. The clamp presses and seals the flexible sealing tube, the sealing end head and the inner sealing ring.
3. The test hole sealing device of a temperature and humidity calibration box according to claim 1, characterized in that: The outer sealing ring is provided with an annular boss, one end of the sealing end head is provided with a connecting ring platform that matches the inner diameter of the annular boss, the annular boss is threadedly connected to the connecting ring platform and is provided with a set screw for positioning, and the other end of the sealing end head is sealed and connected to the flexible sealing tube.
4. The test hole sealing device of a temperature and humidity calibration box according to claim 1, characterized in that: The outer sealing ring is provided with two sealing sheets that fit together, the two sealing sheets are fixedly connected and form an annular cavity inside, one end of the sealing end head is provided with a rotating sheet, the rotating sheet is arranged in the annular cavity and can rotate, and the rotating sheet is positioned and connected to the sealing sheet located on the outside by a set screw.
5. The test hole sealing device of a temperature and humidity calibration box according to claim 1, characterized in that: The flexible sealing tube is made of Oxford cloth, PVC cloth or polyester taffeta.
6. The test hole sealing device of a temperature and humidity calibration box according to claim 1, characterized in that: There are multiple test lines, and each test line is provided with a silicone hose on the outside of the test line hole portion, and multiple test lines are also provided with a silicone sleeve on the outside of the test line hole portion.