Ventilation and exhaust flexible connection device

Abstract

The utility model discloses a ventilation and exhaust flexible connection device which comprises a first flange piece, a second flange piece, a rubber ring and a flexible connection cylinder, the first flange piece is connected with a conveying cylinder, the second flange piece is connected with a containing cylinder, one end of the flexible connection cylinder is arranged on the conveying cylinder in a sleeved mode and connected with the conveying cylinder in a sealed mode, and the other end of the flexible connection cylinder is connected with the containing cylinder. The other end of the flexible connecting cylinder is arranged on the containing cylinder in a sleeving mode and connected with the containing cylinder in a sealed mode, the rubber ring is arranged on the inner circumferential wall of the containing cylinder, the end, away from the first flange piece, of the conveying cylinder penetrates through a hollow area of the rubber ring, and the end, connected with the first flange piece, of a bottom plate of the conveying cylinder is higher than the other end of the bottom plate of the conveying cylinder. The ventilation and exhaust flexible connection device is novel in structure, and axial stress and radial stress can be well eliminated. And moreover, condensate formed in the ventilation and exhaust flexible connection device cannot stay in the ventilation and exhaust flexible connection device.

Description

Technical Field

[0001] The utility model relates to the technical field of heating and ventilation, in particular to a ventilation and exhaust soft connection device. Background Art

[0002] The flexible connection device is a necessary component to ensure the normal operation of HVAC equipment. The flexible connection device plays an important role in eliminating air duct stress, vibration of dynamic load equipment, etc. In addition, the leakage of condensate in the flexible connection device has been plaguing the entire industry. Although the existing ventilation and exhaust flexible connection devices (such as the technical solution disclosed in the Chinese utility model patent with application number 201821629943.0) can eliminate air duct stress and vibration of dynamic load equipment, they are prone to accumulate condensate, resulting in their inability to work stably for a long time. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a ventilation and exhaust soft connection device which can effectively discharge condensate.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a ventilation and exhaust flexible connection device, including a first flange, a second flange, a rubber ring and a flexible connection cylinder, the first flange is connected to a conveying cylinder, the second flange is connected to a receiving cylinder, one end of the flexible connection cylinder is sleeved on the conveying cylinder and sealed with the conveying cylinder, the other end of the flexible connection cylinder is sleeved on the receiving cylinder and sealed with the receiving cylinder, the rubber ring is arranged on the inner circumferential wall of the receiving cylinder, the end of the conveying cylinder away from the first flange passes through the hollow area of ​​the rubber ring, and the bottom plate of the conveying cylinder is connected to one end of the first flange and is higher than the other end of the bottom plate of the conveying cylinder.

[0005] In one embodiment, the flexible connection tube is sealed and connected to the conveying cylinder through a first sealing assembly, and the first sealing assembly includes a first pressure strip and a first fastener, the first pressure strip is located outside the flexible connection tube and presses against the flexible connection tube, and the first fastener fastens the first pressure strip and the conveying cylinder.

[0006] In one embodiment, the first fastener is a rivet, a screw or a bolt.

[0007] In one embodiment, the flexible connection tube is sealed and connected to the receiving cylinder through a second sealing assembly, the second sealing assembly includes a second pressure strip and a second fastener, the second pressure strip is located outside the flexible connection tube and presses against the flexible connection tube, and the second fastener fastens the second pressure strip and the conveying cylinder.

[0008] In one embodiment, the second fastener is fastened to the rubber ring.

[0009] In one embodiment, the second fastener is a rivet, a screw or a bolt.

[0010] In one embodiment, the first flange and the conveying cylinder are an integral structure formed by integral processing, and / or the second flange and the receiving cylinder are an integral structure formed by integral processing.

[0011] In one embodiment, the soft connection tube is a flexible and deformable structure.

[0012] In one embodiment, the distance between the end surface of the bottom plate of the conveying cylinder away from the first flange and the first flange is greater than the distance between the side surface of the rubber ring away from the first flange and the first flange.

[0013] In one embodiment, the angle between the bottom plate of the conveying cylinder and the first flange is less than 90° and greater than or equal to 85°.

[0014] The beneficial effects of the utility model are as follows: the structure of the ventilation and exhaust soft connection device is novel, the first flange and the second flange are respectively fixedly connected to different devices, the first flange and the second flange can be sealed in a non-contact manner, the axial stress of the ventilation and exhaust soft connection device can be buffered and eliminated by the soft connection cylinder itself, and the radial stress can be buffered and eliminated by the rubber ring between the conveying cylinder and the receiving cylinder. Moreover, the condensate formed inside the ventilation and exhaust soft connection device will gather on the bottom plate of the conveying cylinder and flow along the bottom plate of the conveying cylinder into the device connected to the second flange, and finally be discharged to the designated position through the drain port of the device connected to the second flange, and will not stay in the ventilation and exhaust soft connection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a front view of the ventilation and exhaust flexible connection device of the first embodiment of the utility model;

[0017] Figure 2 This is a cross-sectional view of the ventilation and exhaust flexible connection device of the first embodiment of the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Description of Figure Numbers:

[0020] 1. The first flange;

[0021] 2. Second flange;

[0022] 3. Rubber ring;

[0023] 4. Soft connection tube;

[0024] 5. Conveying cylinder;

[0025] 6. Accommodating cylinder;

[0026] 7. First sealing assembly; 71. First pressure strip; 72. First fastener;

[0027] 8. Second sealing assembly; 81. Second pressure strip; 82. Second fastener. DETAILED DESCRIPTION

[0028] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0032] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: a ventilation and exhaust soft connection device, which can be applied to HVAC equipment and other equipment that requires ventilation and exhaust.

[0036] The ventilation and exhaust flexible connection device includes a first flange 1, a second flange 2, a rubber ring 3 and a flexible connection tube 4, the first flange 1 is connected to a conveying cylinder 5, the second flange 2 is connected to a receiving cylinder 6, one end of the flexible connection tube 4 is sleeved on the conveying cylinder 5 and is sealed with the conveying cylinder 5, the other end of the flexible connection tube 4 is sleeved on the receiving cylinder 6 and is sealed with the receiving cylinder 6, the rubber ring 3 is arranged on the inner circumferential wall of the receiving cylinder 6, the end of the conveying cylinder 5 away from the first flange 1 passes through the hollow area of ​​the rubber ring 3, and the bottom plate of the conveying cylinder 5 is connected to one end of the first flange 1 and is higher than the other end of the bottom plate of the conveying cylinder 5. Figure 1 and Figure 2 The direction of the arrows in the figure indicates the direction of ventilation and exhaust air flow.

[0037] Preferably, when the first flange 1 is installed on the first device and the second flange 2 is installed on the second device, there is a certain gap between the conveying cylinder 5 and the rubber ring 3, which can increase the activity margin of the conveying cylinder 5, thereby better buffering and eliminating radial stress.

[0038] In this embodiment, the flexible connection tube 4 is sealed with the conveying cylinder 5 through the first sealing assembly 7. The first sealing assembly 7 includes a first pressure strip 71 and a first fastener 72. The first pressure strip 71 is located outside the flexible connection tube 4 and presses against the flexible connection tube 4. The first fastener 72 fastens the first pressure strip 71 and the conveying cylinder 5. The first fastener 72 is a rivet, a screw or a bolt. As a preferred embodiment, the first pressure strip 71 is arranged close to the first flange 1, so that the flexible connection tube 4 can be ensured to have a sufficiently large margin of activity. In other embodiments, the flexible connection tube 4 can also be sealed with the conveying cylinder 5 in other ways, for example, the flexible connection tube 4 is sealed with the conveying cylinder 5 by a sealant.

[0039] In one embodiment, the flexible connection tube 4 is sealed and connected with the receiving cylinder 6 through a second sealing assembly 8, and the second sealing assembly 8 includes a second pressure strip 81 and a second fastener 82, the second pressure strip 81 is located outside the flexible connection tube 4 and presses against the flexible connection tube 4, and the second fastener 82 is fastened and connected with the second pressure strip 81 and the conveying cylinder 5, and the second fastener 82 is a rivet, a screw or a bolt. As a preferred embodiment, the second pressure strip 81 is arranged close to the second flange 2, so that the flexible connection tube 4 can have a larger margin of activity. In other embodiments, the flexible connection tube 4 can also be sealed and connected with the receiving cylinder 6 in other ways, for example, the flexible connection tube 4 is sealed and connected with the receiving cylinder 6 by a sealant.

[0040] To improve the phenomenon of the rubber ring 3 falling off, in this embodiment, the second fastener 82 fastens the second pressure strip 81, the conveying cylinder 5 and the rubber ring 3. Of course, in other embodiments, it is also acceptable that the rubber ring 3 is fixed to the receiving cylinder 6 only by gluing.

[0041] For the convenience of processing, the first flange 1 and the conveying cylinder 5 are an integral structure formed by integral processing, and / or the second flange 2 and the receiving cylinder 6 are an integral structure formed by integral processing. In other embodiments, the first flange 1 and the conveying cylinder 5 can also be connected by welding, and similarly, the second flange 2 and the receiving cylinder 6 can also be connected by welding.

[0042] The flexible connection tube 4 is a flexible and deformable structure, such as a rubber tube, etc. Currently, all ventilation and exhaust flexible connection devices on the market have a flexible connection tube, so in this embodiment, the specific material of the flexible connection tube 4 can be consistent with the material of the existing flexible connection tube.

[0043] Preferably, the distance between the end face of the bottom plate of the conveying cylinder 5 away from the first flange 1 and the first flange 1 is greater than the distance between the side of the rubber ring 3 away from the first flange 1 and the first flange 1, so that the condensate flowing along the bottom plate of the conveying cylinder 5 will directly drip on the side of the rubber ring 3 away from the first flange 1 and will not flow into the flexible connection cylinder 4, which is conducive to the smooth discharge of the condensate. At this time, the rubber ring 3 can be regarded as a water retaining step, which can prevent the condensate dripping from the bottom plate of the conveying cylinder 5 from flowing back toward the direction close to the first flange 1 and falling into the flexible connection cylinder 4.

[0044] The included angle between the bottom plate of the conveying cylinder 5 and the first flange 1 is less than 90° and greater than or equal to 85°. In this embodiment, the included angle between the bottom plate of the conveying cylinder 5 and the first flange 1 is 89°.

[0045] In short, the present ventilation and exhaust flexible connection device plays an important role in eliminating the stress of the air duct and the vibration of the dynamic load equipment. In addition, the present ventilation and exhaust flexible connection device also solves the problem of the retention and leakage of condensate.

[0046] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A ventilation and exhaust flexible connection device, characterized in that: It includes a first flange, a second flange, a rubber ring and a flexible connection cylinder, the first flange is connected to a conveying cylinder, the second flange is connected to a receiving cylinder, one end of the flexible connection cylinder is sleeved on the conveying cylinder and is sealed with the conveying cylinder, the other end of the flexible connection cylinder is sleeved on the receiving cylinder and is sealed with the receiving cylinder, the rubber ring is arranged on the inner circumferential wall of the receiving cylinder, one end of the conveying cylinder away from the first flange passes through the hollow area of ​​the rubber ring, and the bottom plate of the conveying cylinder is connected to one end of the first flange and is higher than the other end of the bottom plate of the conveying cylinder.

2. The ventilation and exhaust flexible connection device according to claim 1, characterized in that: The flexible connection tube is sealed and connected to the conveying cylinder through a first sealing assembly. The first sealing assembly includes a first pressure strip and a first fastener. The first pressure strip is located outside the flexible connection tube and presses against the flexible connection tube. The first fastener fastens the first pressure strip and the conveying cylinder.

3. The ventilation and exhaust flexible connection device according to claim 2, characterized in that: The first fastener is a rivet, a screw or a bolt.

4. The ventilation and exhaust flexible connection device according to claim 1, characterized in that: The flexible connection tube is sealed and connected to the receiving cylinder through a second sealing assembly. The second sealing assembly includes a second pressure strip and a second fastener. The second pressure strip is located outside the flexible connection tube and presses against the flexible connection tube. The second fastener fastens the second pressure strip and the conveying cylinder.

5. The ventilation and exhaust flexible connection device according to claim 4, characterized in that: The second fastener is fastened to the rubber ring.

6. The ventilation and exhaust flexible connection device according to claim 4, characterized in that: The second fastener is a rivet, a screw or a bolt.

7. The ventilation and exhaust flexible connection device according to claim 1, characterized in that: The first flange and the conveying cylinder are an integral structure formed by integral processing, and / or the second flange and the receiving cylinder are an integral structure formed by integral processing.

8. The ventilation and exhaust flexible connection device according to claim 1, characterized in that: The soft connection tube is a flexible and deformable structure.

9. The ventilation and exhaust flexible connection device according to claim 1, characterized in that: The distance between the end surface of the bottom plate of the conveying cylinder away from the first flange and the first flange is greater than the distance between the side surface of the rubber ring away from the first flange and the first flange.

10. The ventilation and exhaust flexible connection device according to claim 9, characterized in that: The angle between the bottom plate of the conveying cylinder and the first flange is less than 90° and greater than or equal to 85°.

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