Ventilation pipe sealing connection structure

Abstract

The utility model discloses a ventilation pipe sealing connection structure, and relates to the technical field of ventilation pipes. The ventilation pipe sealing connection structure comprises a first ventilation pipe, a sealing assembly and a tensioning assembly, a second ventilation pipe is arranged on the right side of the first ventilation pipe, a first concentric-square-shaped plate is fixedly installed on the outer wall of the first ventilation pipe, a second concentric-square-shaped plate is fixedly installed on the outer wall of the second ventilation pipe, and a connecting square strip is fixedly installed on the right side of the first concentric-square-shaped plate; a concentric-square-shaped block is fixedly installed on the inner wall of the first ventilation pipe, the sealing assembly is arranged on the first concentric-square-shaped plate and the concentric-square-shaped block, the sealing assembly is composed of a first sealing gasket, a second sealing gasket and a third sealing gasket, and the tensioning assembly is arranged on the second concentric-square-shaped plate. According to the ventilation pipe sealing connection structure, on one hand, the first ventilation pipe and the second ventilation pipe have good sealing performance after being installed, on the other hand, the first ventilation pipe and the second ventilation pipe can be connected without using bolts, nuts and wrenches, the process of assembling or disassembling the ventilation pipes is more convenient, and the practicability of the structure is improved.

Description

Ventilation duct sealing connection structure Technical Field

[0001] This utility model relates to the field of ventilation pipe technology, and in particular to a sealing connection structure for ventilation pipes. Background Technology

[0002] Chinese patent document CN207539469U discloses a sealed exhaust duct comprising two or more exhaust duct sections. Adjacent exhaust ducts are connected by flanges. One flange on the exhaust duct is designated as the first flange, and the other flange as the second flange. The first flange has a first sealing groove, and the second flange has a second sealing groove. The first and second sealing grooves are positioned opposite each other, forming a sealing cavity. A sealing ring is installed within the sealing cavity and is in a compressed state. The end faces of the first and second flanges are in contact. The first and second flanges on the two exhaust ducts are butted together with their end faces in contact. The first flange has a first sealing groove, and the second flange has a second sealing groove. The sealing ring is installed within the sealing cavity formed by the first and second sealing grooves. The sealing ring is compressed under the action of the flange bolts, achieving a good sealing effect.

[0003] The sealing performance of the aforementioned type of sealed exhaust duct needs improvement, and the connection of multiple ducts requires the use of bolts, nuts, and wrenches, making the assembly or disassembly process inconvenient. Therefore, it can be improved. Summary of the Invention

[0004] The purpose of this utility model is to provide a sealing connection structure for ventilation pipes, which can solve the problem that the sealing performance of exhaust pipe connections still needs to be improved, and that the connection of multiple sets of ducts requires the use of bolts, nuts and wrenches, making the assembly or disassembly process inconvenient.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ventilation pipe sealing connection structure, including a ventilation pipe I, a sealing component, and a tensioning component. A ventilation pipe II is provided on the right side of the ventilation pipe I. A U-shaped plate I is fixedly installed on the outer wall of the ventilation pipe I. A U-shaped plate II is fixedly installed on the outer wall of the ventilation pipe II. A connecting square strip is fixedly installed on the right side of the U-shaped plate I. A U-shaped block is fixedly installed on the inner wall of the ventilation pipe I. The sealing component is provided on the U-shaped plate I and the U-shaped block. The sealing component consists of a sealing gasket I, a sealing gasket II, and a sealing gasket III. The tensioning component is provided on the U-shaped plate II and is used to lock the position of the connecting square strip.

[0006] Preferably, the second herringbone plate has a square socket, the connecting strip is inserted into the square socket, and the connecting strip has a trapezoidal pressing opening.

[0007] Preferably, a U-shaped ring is fixedly installed on the inner wall of the second ventilation pipe, and a sealing gasket is fixedly installed on the right side of the U-shaped block, with the sealing gasket in contact with the U-shaped ring.

[0008] Preferably, the left side of the herringbone block and the right side of the herringbone ring are both provided with sloping openings.

[0009] Preferably, both sealing gasket 2 and sealing gasket 3 are fixedly installed on the right side of the U-shaped plate 1, and both sealing gasket 2 and sealing gasket 3 are in contact with the U-shaped plate 2.

[0010] Preferably, the tensioning assembly includes a mounting block, a threaded rod, a movable trapezoidal strip, a bearing, and a knob. The mounting block is fixedly installed on the right side of the second U-shaped plate, the bearing is fixedly installed on the mounting block, the threaded rod is disposed on the mounting block and the bearing, the movable trapezoidal strip is threaded onto the threaded rod, the other end of the threaded rod is fixedly connected to the knob, and the position of the movable trapezoidal strip corresponds to the position of the trapezoidal clamping port.

[0011] Preferably, the right side of the second spiral plate has a strip-shaped opening, and a limit strip is fixedly installed on the outer wall of the movable trapezoidal strip. The limit strip is slidably installed in the strip-shaped opening, which can limit the movement trajectory of the movable trapezoidal strip.

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

[0013] This ventilation duct sealing connection structure, through the coordinated use of U-shaped plate one, U-shaped plate two, connecting square strip, mounting block, threaded rod, movable trapezoidal strip, bearing, knob, limit strip, U-shaped block, U-shaped ring, sealing gasket one, sealing gasket two, and sealing gasket three, ensures good sealing performance of ventilation duct one and ventilation duct two after installation, without affecting airflow efficiency, thus increasing versatility and practicality. It also has the advantages of simple structure and low fluid pressure loss. Furthermore, the connection between ventilation duct one and ventilation duct two does not require the use of bolts, nuts, or wrenches, making the assembly or disassembly process more convenient and improving the practicality of the structure. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 is a perspective view of this utility model;

[0016] Figure 2 is a perspective view of the ventilation pipe of this utility model;

[0017] Figure 3 is a front sectional perspective view of the present invention;

[0018] Figure 4 is a perspective view of the connecting strip of this utility model.

[0019] Reference numerals in the attached drawings: 1. Ventilation duct one; 2. Ventilation duct two; 3. U-shaped plate one; 4. U-shaped plate two; 5. Connecting square strip; 6. Tensioning assembly; 61. Mounting block; 62. Threaded rod; 63. Moving trapezoidal strip; 64. Bearing; 65. Knob; 7. Limiting strip; 8. U-shaped block; 9. U-shaped ring; 10. Sealing gasket one; 11. Sealing gasket two; 12. Sealing gasket three. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Please refer to Figures 1-4. This utility model provides a technical solution: a ventilation pipe sealing connection structure, including a ventilation pipe 1, a sealing component, and a tensioning component 6. A ventilation pipe 2 is provided on the right side of the ventilation pipe 1. A U-shaped plate 3 is fixedly installed on the outer wall of the ventilation pipe 1. A U-shaped plate 4 is fixedly installed on the outer wall of the ventilation pipe 2. A connecting square strip 5 is fixedly installed on the right side of the U-shaped plate 3. A U-shaped block 8 is fixedly installed on the inner wall of the ventilation pipe 1. The sealing component is provided on the U-shaped plate 3 and the U-shaped block 8. The sealing component consists of a sealing gasket 10, a sealing gasket 21, and a sealing gasket 32. The tensioning component 6 is provided on the U-shaped plate 4. The tensioning component 6 is used to lock the position of the connecting square strip 5.

[0022] A square socket is provided on the second 4 of the spiral plate, and a connecting square strip 5 is inserted into the square socket. A trapezoidal pressing port is provided on the connecting square strip 5. A spiral ring 9 is fixedly installed on the inner wall of the second 2 of the ventilation pipe. A sealing gasket 10 is fixedly installed on the right side of the spiral block 8. The sealing gasket 10 is in contact with the spiral ring 9. A sloping opening is provided on the left side of the spiral block 8 and the right side of the spiral ring 9.

[0023] Sealing gaskets 11 and 12 are both fixedly installed on the right side of the U-shaped plate 3. Both gaskets 11 and 12 are in contact with the U-shaped plate 4. The tensioning assembly 6 includes a mounting block 61, a threaded rod 62, a movable trapezoidal strip 63, a bearing 64, and a knob 65. The mounting block 61 is fixedly installed on the right side of the U-shaped plate 4. The bearing 64 is fixedly installed on the mounting block 61. The threaded rod 62 is positioned on the mounting block 61 and the bearing 64. The movable trapezoidal strip 63 is threaded onto the threaded rod 62. The other end of the threaded rod 62 is fixedly connected to the knob 65. The movable trapezoidal strip 63 corresponds to the position of the trapezoidal pressing opening. A strip-shaped opening is provided on the right side of the U-shaped plate 4. A limit strip 7 is fixedly installed on the outer wall of the movable trapezoidal strip 63. The limit strip 7 is slidably installed inside the strip-shaped opening. By holding the knob 65 and turning the threaded rod 62 clockwise, the movable trapezoidal strip is driven... The trapezoidal strip 63 moves towards the connecting square strip 5 due to the limiting strip 7. Then, the trapezoidal strip 63 is inserted into the trapezoidal pressing port and automatically squeezes the connecting square strip 5 to move to the right. Subsequently, the U-shaped plate 3 automatically moves to the right and fully contacts the U-shaped plate 4. During this process, the sealing gasket 11 and sealing gasket 32 ​​automatically contact the U-shaped plate 4, and at the same time, the sealing gasket 10 automatically contacts the U-shaped ring 9 in the ventilation pipe 2. This ensures that the ventilation pipe 11 and ventilation pipe 22 have good sealing performance after installation, without affecting the airflow efficiency. This increases the versatility and practicality, and has the advantages of simple structure and low fluid pressure loss. On the other hand, the connection between ventilation pipe 11 and ventilation pipe 22 does not require the use of bolts, nuts, or wrenches, making the assembly or disassembly process more convenient and improving the practicality of the structure.

[0024] Working principle: By turning the hand knob 65 clockwise on the threaded rod 62, the moving trapezoidal bar 63 is moved. Due to the limiting bar 7, the moving trapezoidal bar 63 moves towards the connecting square bar 5. Then, the moving trapezoidal bar 63 is inserted into the trapezoidal pressing port and automatically squeezes the connecting square bar 5 to move to the right. Subsequently, the first ring plate 3 automatically moves to the right and makes full contact with the second ring plate 4. During the process, the second sealing gasket 11 and the third sealing gasket 12 automatically contact the second ring plate 4, and at the same time, the first sealing gasket 10 automatically contacts the ring 9 in the ventilation pipe 2.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A sealing connection structure for ventilation ducts, characterized in that, include: Ventilation duct 1 (1), with ventilation duct 2 (2) on its right side. A U-shaped plate 1 (3) is fixedly installed on the outer wall of ventilation duct 1 (1), and a U-shaped plate 2 (4) is fixedly installed on the outer wall of ventilation duct 2 (2). A connecting square strip (5) is fixedly installed on the right side of U-shaped plate 1 (3), and a U-shaped block (8) is fixedly installed on the inner wall of ventilation duct 1 (1). A square socket is provided on U-shaped plate 2 (4), and the connecting square strip (5) is inserted into the square socket. A trapezoidal pressing port is provided on the connecting square strip (5). A sealing assembly is provided on U-shaped plate 1 (3) and U-shaped block (8). The sealing assembly consists of sealing gasket 1 (10), sealing gasket 2 (11), and sealing gasket 3 (12). A tensioning assembly is provided. (6), which is set on the second (4) of the spiral plate, the tensioning assembly (6) is used to lock the position of the connecting square strip (5). The tensioning assembly (6) includes a mounting block (61), a threaded rod (62), a movable trapezoidal strip (63), a bearing (64) and a knob (65). The mounting block (61) is fixedly installed on the right side of the second (4) of the spiral plate, the bearing (64) is fixedly installed on the mounting block (61), the threaded rod (62) is set on the mounting block (61) and the bearing (64), the movable trapezoidal strip (63) is threaded on the threaded rod (62), the other end of the threaded rod (62) is fixedly connected to the knob (65), and the movable trapezoidal strip (63) corresponds to the position of the trapezoidal pressing port.

2. The ventilation duct sealing connection structure according to claim 1, characterized in that: The inner wall of the second ventilation pipe (2) is fixedly installed with a loop ring (9), and the first sealing gasket (10) is fixedly installed on the right side of the loop block (8), with the first sealing gasket (10) in contact with the loop ring (9).

3. The ventilation duct sealing connection structure according to claim 2, characterized in that: The left side of the spiral block (8) and the right side of the spiral ring (9) are both provided with sloping openings.

4. The ventilation duct sealing connection structure according to claim 3, characterized in that: Both sealing gasket 2 (11) and sealing gasket 3 (12) are fixedly installed on the right side of the spiral plate 1 (3), and both sealing gasket 2 (11) and sealing gasket 3 (12) are in contact with the spiral plate 2 (4).

5. The ventilation duct sealing connection structure according to claim 4, characterized in that: The right side of the spiral plate (4) has a strip opening, and the outer wall of the movable trapezoidal strip (63) is fixedly installed with a limiting strip (7), which is slidably installed in the strip opening.

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