Double-layered ramp type gas efficient sealing door
By combining a double-layer sloping structure with a positive pressure gas pipeline and a check valve design, the leakage problem of traditional gas-sealed doors when negative pressure gas is generated is solved, achieving efficient sealing and stable gas pressure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU KESIRUIDE ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional gas-sealed doors have low suction and poor sealing when the equipment first generates negative pressure gas, making them prone to gas leakage.
The sealing door adopts a double-layer sloping structure, combined with a positive pressure gas pipeline and a check valve. It uses positive pressure gas to create a pressure difference to ensure the sealing effect, and the check valve prevents gas backflow.
It effectively prevents gas leakage when the equipment first generates negative pressure gas, improves the sealing degree, and avoids equipment damage and unstable gas pressure.
Smart Images
Figure CN224380591U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas sealing technology, specifically a double-layer sloping gas high-efficiency sealing door. Background Technology
[0002] Gas-sealed doors are widely used in waste incineration power generation, chemical industry, pharmaceutical industry, air-supported membrane structures and other fields. With the continuous advancement of industrial technology, the performance requirements for gas-sealed doors are also getting higher and higher.
[0003] Traditional gas sealing doors typically use a single door to seal negative pressure gas by relying on the pressure difference between the gas and the outside. When the equipment first generates negative pressure gas, the suction force is relatively small, the sealing degree is low, and continuous gas leakage is likely to occur. Therefore, a double-layer sloping gas high-efficiency sealing door is proposed to solve the problems mentioned above. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a double-layer sloping gas high-efficiency sealing door, which has a high-efficiency sealing effect.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a negative pressure chamber, which is a hollow structure. A double-layered sealed door is fixedly installed on the outside of the negative pressure chamber. A sealing frustum is slidably installed on the inner wall of the double-layered sealed door, penetrating through the inner wall of the double-layered sealed door. One end of the sealing frustum extends into the interior of the negative pressure chamber, and the other end extends into the interior of the double-layered sealed door. A second sealing frustum is slidably installed on the other inner wall of the double-layered sealed door, penetrating through the inner wall of the double-layered sealed door. One end of the second sealing frustum extends into the exterior of the double-layered sealed door, and the other end extends into the interior of the double-layered sealed door. A positive pressure gas transmission pipe is penetrating through the interior of the double-layered sealed door, fixedly installed on the inner wall of the double-layered sealed door, and extending into the exterior of the double-layered sealed door.
[0006] Preferably, a check valve is fixedly connected to one extension end of the positive pressure gas transmission pipe, and a second positive pressure gas transmission pipe is fixedly connected to the other end of the check valve.
[0007] Preferably, the other end of the second positive pressure gas pipe is fixedly connected to a positive pressure gas source, the second positive pressure gas pipe is fixedly connected to the output end of the positive pressure gas source, and a positive pressure switch is fixedly installed on the outside of the second positive pressure gas pipe.
[0008] Preferably, a pressure transmitter is fixedly installed at the upper end of the double-layer sealed door, and the lower end of the pressure transmitter extends into the interior of the double-layer sealed door.
[0009] Preferably, a limiting baffle is fixedly provided at the smaller end of the first sealing frustum, and a limiting baffle is fixedly provided at the smaller end of the second sealing frustum.
[0010] Preferably, a transparent endoscope is fixedly installed inside the first sealing truncated cone, and the first transparent endoscope passes through both the first limiting baffle and the first sealing truncated cone. A transparent endoscope is fixedly installed inside the second sealing truncated cone, and the second transparent endoscope passes through both the second limiting baffle and the second sealing truncated cone. The second transparent endoscope extends to the outside of the second sealing truncated cone.
[0011] Preferably, a vent pipe is fixedly installed inside the check valve, and a telescopic tube is installed through the vent pipe. A check plate is fixedly installed on one side of the telescopic tube, and a limit plate is fixedly installed on the other side of the telescopic tube. A limit groove is opened inside the check valve, and the limit plate is slidably installed inside the limit groove. Several vent holes are opened through the surface of the limit plate.
[0012] Compared with the prior art, this utility model provides a double-layer sloping gas high-efficiency sealing door, which has the following beneficial effects:
[0013] 1. By using a positive pressure gas supply pipe that enters through the double-layer sealed door, along with a positive pressure gas source and a sealing frustum on the inner wall of the double-layer sealed door, the problem of low suction and poor sealing when the equipment first generates negative pressure gas is solved, which can easily lead to continuous gas leakage.
[0014] 2. The special structure of the check valve ensures that positive pressure gas can only flow in one direction. When the positive pressure gas source stops, it prevents gas backflow from causing equipment damage and unstable gas pressure. Attached Figure Description
[0015] Figure 1 This is a cross-sectional view of the present invention;
[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the positive pressure input structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the internal structure of the double-layer sealing door of this utility model;
[0019] Figure 5 This is a schematic diagram of the internal structure of the check valve of this utility model.
[0020] In the diagram: 1. Negative pressure chamber; 2. Double-sealed door; 3. Sealing truncated cone I; 4. Sealing truncated cone II; 5. Positive pressure gas supply pipe I; 6. Check valve; 7. Positive pressure gas supply pipe II; 8. Positive pressure gas source; 9. Positive pressure switch; 10. Pressure transmitter; 11. Limiting baffle I; 12. Limiting baffle II; 13. Transparent viewing mirror I; 14. Transparent viewing mirror II; 15. Vent pipe; 16. Telescopic pipe; 17. Check valve; 18. Limiting plate; 19. Limiting slide; 20. Vent hole. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Example:
[0023] Please see Figures 1-5 This embodiment of a double-layered ramp-type high-efficiency gas sealing door includes a negative pressure chamber 1, which is a hollow structure. A double-layered sealing door 2 is fixedly installed on the outside of the negative pressure chamber 1. A sealing frustum 3 is slidably installed on the inner wall of the double-layered sealing door 2. The sealing frustum 3 is installed through the inner wall of the double-layered sealing door 2. One end of the sealing frustum 3 extends into the interior of the negative pressure chamber 1, and the other end extends into the interior of the double-layered sealing door 2. A sealing frustum 4 is slidably installed on the other inner wall of the double-layered sealing door 2. The sealing frustum 3 is installed through the inner wall of the double-layered sealing door 2. One end of the sealing frustum 4 extends into the exterior of the double-layered sealing door 2, and the other end extends into the interior of the double-layered sealing door 2. A positive pressure gas transmission pipe 5 is installed through the interior of the double-layered sealing door 2. The positive pressure gas transmission pipe 5 is fixedly installed on the inner wall of the double-layered sealing door 2 and extends into the exterior of the double-layered sealing door 2.
[0024] When positive pressure gas is transported inside the positive pressure gas transmission pipe 5, the positive pressure gas flows into the hollow part inside the double-layer sealing door 2 along the pipe structure of the positive pressure gas transmission pipe 5. The positive pressure gas and the normal gas outside the double-layer sealing door 2 form a pressure difference, which generates an outward pressure on the sealing frustum 4. Combined with the structure of the sealing frustum 4, a tight sealing effect is produced. In addition, the positive pressure gas is directly introduced in large quantities, and the pressure generated at the moment of introduction is large, which prevents the positive pressure gas from leaking. At this time, negative pressure gas is gradually generated inside the negative pressure chamber 1 due to the operation of the equipment. The positive pressure gas and the negative pressure gas inside the negative pressure chamber 1 form a pressure difference, which generates a pressure close to the negative pressure chamber 1 on the sealing frustum 3. The huge pressure difference formed by the positive and negative pressure will generate a large force on the sealing frustum 3, which prevents the suction force from being relatively small and the sealing degree from being low when the equipment first generates negative pressure gas, thus preventing continuous gas leakage.
[0025] A check valve 6 is fixedly connected to the extension end of the positive pressure gas transmission pipe 1 5. A positive pressure gas transmission pipe 2 7 is fixedly connected to the other end of the check valve 6. A positive pressure gas source 8 is fixedly connected to the other end of the positive pressure gas transmission pipe 2 7. The positive pressure gas transmission pipe 2 7 is fixedly connected to the output end of the positive pressure gas source 8. A positive pressure switch 9 is fixedly installed on the outside of the positive pressure gas transmission pipe 2 7.
[0026] When the equipment is ready to run, turn the positive pressure switch 9 to turn on the positive pressure gas source 8. The positive pressure gas flows into the double-layer sealing door 2 through the positive pressure gas supply pipe 2 7, check valve 6, and positive pressure gas supply pipe 1 5 in sequence, forming a pressure difference and producing a sealing effect.
[0027] A pressure transmitter 10 is fixedly installed at the upper end of the double-layer sealed door 2, and the lower end of the pressure transmitter 10 extends into the interior of the double-layer sealed door 2.
[0028] When positive pressure gas is introduced into the double-sealed door 2, the pressure transmitter 10 extending into the double-sealed door 2 detects and displays the gas pressure inside the double-sealed door 2. Users can judge the sealing condition by observing the pressure and shut off the positive pressure gas source 8 in time.
[0029] A limiting baffle 11 is fixedly installed at the smaller end of the sealing frustum 3, and a limiting baffle 22 is fixedly installed at the smaller end of the sealing frustum 4. A transparent viewing mirror 13 is fixedly installed inside the sealing frustum 3, and the transparent viewing mirror 13 passes through both the limiting baffle 11 and the sealing frustum 3. A transparent viewing mirror 24 is fixedly installed inside the sealing frustum 4, and the transparent viewing mirror 24 passes through both the limiting baffle 22 and the sealing frustum 4. The transparent viewing mirror 214 extends to the outside of the sealing frustum 24.
[0030] When the equipment is not running and no positive pressure gas is introduced, the sealing frustum 1 3 and sealing frustum 2 4 will slide into the double-layer sealing door 2 due to gravity. At this time, the limiting baffle 1 11 and limiting baffle 2 12 will block the outer sides of the double-layer sealing door 2 to ensure the integrity of the sealing structure of the double-layer sealing door 2. When the equipment is running, the internal condition of the negative pressure chamber 1 can be observed through the transparent viewing mirror 1 13 and transparent viewing mirror 2 14.
[0031] A vent pipe 15 is fixedly installed inside the check valve 6. A telescopic pipe 16 is installed through the vent pipe 15. A check plate 17 is fixedly installed on one side of the telescopic pipe 16, and a limit plate 18 is fixedly installed on the other side of the telescopic pipe 16. A limit groove 19 is opened inside the check valve 6. The limit plate 18 is slidably installed inside the limit groove 19. Several vent holes 20 are opened through the surface of the limit plate 18.
[0032] When positive pressure gas is supplied to the positive pressure gas source 8, the positive pressure gas flows into the check valve 6, through the vent 20 into the vent pipe 15, and pushes the check plate 17. The check plate 17 drives the telescopic tube 16 and the limiting plate 18 to move within the limiting groove 19 to prevent the check plate 17 from disengaging from the check valve 6. At this time, the gas flows out of the vent pipe 15 and into the positive pressure gas transmission pipe 5. When the positive pressure gas source 8 is closed, the positive pressure gas in the positive pressure gas transmission pipe 5 flows back, pushing the check plate 17. The check plate 17 blocks the vent pipe 15, and the positive pressure gas cannot pass through the check valve 6, thus avoiding damage to the gas source equipment.
[0033] The sliding arrangement of the sealing frustum 1 3 and the sealing frustum 2 4, as well as the control of the positive pressure air source 8 by the positive pressure switch 9, are all common technologies. As long as they can achieve their beneficial effects, they can be implemented. They are common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0035] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A double-layered sloping gas high-efficiency sealing door, comprising a negative pressure chamber (1), characterized in that: The negative pressure chamber (1) has a hollow structure. A double-layer sealed door (2) is fixedly installed on the outside of the negative pressure chamber (1). A sealing frustum (3) is slidably installed on the inner wall of the double-layer sealed door (2). The sealing frustum (3) is installed through the inner wall of the double-layer sealed door (2). One end of the sealing frustum (3) extends into the interior of the negative pressure chamber (1), and the other end extends into the interior of the double-layer sealed door (2). The double-layer sealed door (2) has another... A sealing frustum 2 (4) is slidably provided on one side of the inner wall. One end of the sealing frustum 2 (4) extends to the outside of the double-layer sealing door (2), and the other end of the sealing frustum 2 (4) extends to the inside of the double-layer sealing door (2). A positive pressure gas transmission pipe 1 (5) is provided through the inside of the double-layer sealing door (2). The positive pressure gas transmission pipe 1 (5) is fixedly provided on the inner wall of the double-layer sealing door (2), and the positive pressure gas transmission pipe 1 (5) extends to the outside of the double-layer sealing door (2).
2. The double-layer sloping gas-sealing high-efficiency sealing door according to claim 1, characterized in that: A check valve (6) is fixedly connected to the extension end of the first positive pressure gas transmission pipe (5), and a second positive pressure gas transmission pipe (7) is fixedly connected to the other end of the check valve (6).
3. The double-layer sloping gas high-efficiency sealing door according to claim 2, characterized in that: The other end of the positive pressure gas supply pipe (7) is fixedly connected to a positive pressure gas source (8), the positive pressure gas supply pipe (7) is fixedly connected to the output end of the positive pressure gas source (8), and a positive pressure switch (9) is fixedly installed on the outside of the positive pressure gas supply pipe (7).
4. The double-layer sloping gas-sealing high-efficiency sealing door according to claim 1, characterized in that: A pressure transmitter (10) is fixedly installed at the upper end of the double-layer sealed door (2), and the lower end of the pressure transmitter (10) extends into the interior of the double-layer sealed door (2).
5. The double-layer sloping gas-sealing high-efficiency sealing door according to claim 1, characterized in that: Limiting baffle 1 (11) is fixedly provided on the smaller end face of sealing frustum 1 (3), and limiting baffle 2 (12) is fixedly provided on the smaller end face of sealing frustum 2 (4).
6. A double-layer sloping gas-sealing high-efficiency sealing door according to claim 5, characterized in that: A transparent viewing mirror (13) is fixedly installed inside the first sealing truncated cone (3). The first transparent viewing mirror (13) passes through the first limiting baffle (11) and the first sealing truncated cone (3). A transparent viewing mirror (14) is fixedly installed inside the second sealing truncated cone (4). The second transparent viewing mirror (14) passes through the second limiting baffle (12) and the second sealing truncated cone (4). The second transparent viewing mirror (14) extends to the outside of the second sealing truncated cone (4).
7. A double-layer sloping gas-sealing high-efficiency sealing door according to claim 2, characterized in that: The check valve (6) is fixedly provided with a vent pipe (15), and a telescopic pipe (16) is provided through the vent pipe (15). A check plate (17) is fixedly provided on one side of the telescopic pipe (16), and a limit plate (18) is fixedly provided on the other side of the telescopic pipe (16). A limit groove (19) is opened inside the check valve (6), and the limit plate (18) is slidably provided inside the limit groove (19). Several vent holes (20) are opened through the surface of the limit plate (18).