Flow stabilizing device for return air duct

Abstract

The utility model provides a flow stabilizing device for a return air duct, comprising a bent pipe, two first abutment plates, two second abutment plates, two rotating sleeves, two sliding sleeves and a flow stabilizing plate, wherein the bent pipe has an air inlet end and an air outlet end, wherein the air inlet end has a first bending portion extending downward, and the air outlet end has a second bending portion extending horizontally; the two first abutment plates are respectively used for fixed sleeves on the ends of the first straight pipe and the second straight pipe; the two second abutment plates are respectively fixed sleeves on the outer ends of the first bending portion and the second bending portion, and a sealing ring is embedded on the end surface of the second abutment plate; the two rotating sleeves are respectively used for rotationally sleeved on the outer periphery of the first straight pipe and the second straight pipe; the two sliding sleeves are respectively slidably sleeved on the outer periphery of the first bending portion and the second bending portion, and the sliding sleeve is threadedly connected to the rotating sleeve; and the flow stabilizing plate is arranged in the bent pipe. The flow stabilizing device for a return air duct provided by the utility model can quickly disassemble the bent pipe by rotating and separating the rotating sleeve and the sliding sleeve, thereby improving the disassembly efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of air ducts, and more specifically relates to a flow stabilizing device for a return air duct. Background Art

[0002] In the air return system of the vaccine factory's air conditioning, when the air flow in some return air ducts is complex and vortices are generated, the return air duct will collide with each other due to the uneven distribution of the air flow at a certain bend, causing the return air duct to vibrate. Therefore, the bend here is usually removed and a flow stabilizing structure is added inside the bend.

[0003] However, because the elbow and the straight pipe in the return air duct are connected by flanges, when removing the elbow, it is necessary to sequentially remove multiple sets of bolt connectors, which makes the removal process extremely cumbersome and reduces the removal efficiency. Utility Model Content

[0004] The embodiment of the utility model provides a flow stabilizing device for a return air duct, which can quickly disassemble the bent pipe by rotating and separating a rotating sleeve and a sliding sleeve, thereby improving the disassembly efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a flow stabilizing device for a return air duct, comprising a bent pipe, two first abutment plates, two second abutment plates, two rotating sleeves, two sliding sleeves and a flow stabilizing plate, the bent pipe being arranged in the up-down direction and having an air inlet end opening downward and an air outlet end opening toward one side, the air inlet end having a first bending portion extending downward, and the air outlet end having a second bending portion extending horizontally; the two first abutment plates are respectively used to be fixedly sleeved on the ends of the first straight pipe and the second straight pipe; the two second abutment plates are respectively fixedly sleeved on the outer ends of the first bending portion and the second bending portion, and the two second abutment plates are respectively used to A sealing ring for abutting the end surface of the second abutment disk is embedded in a one-to-one abutment with the two first abutment disks; the two rotating sleeves are respectively used to be rotatably sleeved on the outer periphery of the first straight tube and the second straight tube; the two sliding sleeves are respectively slidably sleeved on the outer periphery of the first bending portion and the second bending portion, the sliding sleeve has an insertion cavity with an opening facing the corresponding rotating sleeve, and the sliding sleeve is threadedly connected to the rotating sleeve; the flow stabilizer is arranged in the bent pipe and extends along the extension direction of the bent pipe, and is used to separate and buffer the airflow; wherein the sliding sleeve can approach the rotating sleeve and make the rotating sleeve rotate and insert into the insertion cavity to lock the relative position of the first abutment disk and the second abutment disk.

[0006] In one possible implementation, the second abutment disk has an annular groove on its end surface close to the first abutment disk, a sealing ring is embedded in the bottom wall of the annular groove, and an embedded ring that is plugged into the annular groove is provided on the end surface of the first abutment disk close to the second abutment disk.

[0007] In a possible implementation, an axially extending positioning groove is provided on the outer peripheral wall of the first bending portion and the second bending portion, and a positioning block is provided on the inner wall of the sliding sleeve, which extends into the positioning groove and slidably cooperates with the positioning groove.

[0008] In a possible implementation, the two rotating sleeves are rotatably connected to the first straight tube and the second straight tube respectively through bearings.

[0009] In a possible implementation, a plurality of flow stabilizers are provided at intervals along the radial direction of the curved pipe.

[0010] In some embodiments, the lengths of the plurality of flow stabilizers gradually increase or decrease in the radial direction of the curved pipe.

[0011] Compared with the prior art, the flow stabilizing device for the return air duct provided in this embodiment only requires rotating two rotating sleeves and simultaneously moving the sliding sleeve away from the rotating sleeves until the rotating sleeves are separated from the sliding sleeves, thereby quickly disassembling the bent pipe and improving disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 This is a schematic diagram of the front cross-sectional structure of a flow stabilizing device for a return air duct provided in an embodiment of the utility model.

[0014] Among them, the reference numerals in the figure are:

[0015] 1. First straight tube; 2. Second straight tube; 10. Bend tube; 11. First bending portion; 12. Second bending portion; 13. Positioning groove; 20. First abutment disk; 21. Embedded ring; 30. Second abutment disk; 31. Sealing ring; 32. Annular groove; 40. Rotating sleeve; 41. Bearing; 50. Sliding sleeve; 51. Insertion cavity; 52. Positioning block; 60. Flow stabilizer. DETAILED DESCRIPTION

[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0018] See also Figure 1 , the flow stabilizing device for the return air duct provided by the utility model is now described. The flow stabilizing device for the return air duct comprises a curved pipe 10, two first abutting plates 20, two second abutting plates 30, two rotating sleeves 40, two sliding sleeves 50 and a flow stabilizing plate 60. The curved pipe 10 is arranged in the up-down direction and has an air inlet end opening downward and an air outlet end opening toward one side. The air inlet end has a first bending portion 11 extending downward, and the air outlet end has a second bending portion 12 extending horizontally; the two first abutting plates 20 are respectively used to be fixedly sleeved on the ends of the first straight pipe 1 and the second straight pipe 2; the two second abutting plates 30 are respectively fixedly sleeved on the outer ends of the first bending portion 11 and the second bending portion 12, and the two second abutting plates 30 are respectively used to abut and cooperate with the two first abutting plates 20 in a one-to-one correspondence, and the second A sealing ring 31 for abutting against the end surface of the first abutment disk 20 is embedded on the end surface of the abutment disk 30; two rotating sleeves 40 are respectively used to be rotatably sleeved on the outer peripheries of the first straight tube 1 and the second straight tube 2; two sliding sleeves 50 are respectively slidably sleeved on the outer peripheries of the first bending portion 11 and the second bending portion 12, and the sliding sleeve 50 has an insertion cavity 51 with an opening facing the corresponding rotating sleeve 40, and the sliding sleeve 50 is threadedly connected to the rotating sleeve 40; the flow stabilizer 60 is arranged in the bent pipe 10 and extends along the extension direction of the bent pipe 10, and is used to separate and buffer the airflow; wherein the sliding sleeve 50 can approach the rotating sleeve 40 and make the rotating sleeve 40 rotate and insert into the insertion cavity 51 to lock the relative position of the first abutment disk 20 and the second abutment disk 30.

[0019] The embodiment of the present application provides a flow stabilizing device for a return air duct. During its actual use, it is only necessary to rotate the two rotating sleeves 40 and simultaneously move the sliding sleeve 50 away from the rotating sleeve 40 until the rotating sleeve 40 is separated from the sliding sleeve 50, so that the bent pipe 10 can be quickly disassembled, thereby improving the disassembly efficiency.

[0020] When the bent pipe 10 needs to be installed, the two second abutment plates 30 are aligned one by one with the two first abutment plates 20 respectively, and then the sliding sleeve 50 is slid close to the corresponding rotating sleeve 40, and the rotating sleeve 40 is threadedly connected with the sliding sleeve 50 until the sliding sleeve 50 pulls the two second abutment plates 30 to abut against the two first abutment plates 20 respectively, and cooperates with the sealing performance of the sealing ring 31 to make the bent pipe 10 stably sealed and connected with the first straight pipe 1 and the second straight pipe 2 respectively.

[0021] The flow stabilizer 60 divides the space inside the curved pipe 10 into two parts. The airflow enters the curved pipe 10 from the first straight pipe 1 below the curved pipe 10. The flow stabilizer 60 first buffers the airflow to destroy the formation of its vortex, and then evenly divides the airflow into two parts to pass through both sides of the flow stabilizer 60, thereby eliminating the vibration of the curved pipe 10.

[0022] Compared with the prior art, the flow stabilizing device for the return air duct provided in this embodiment only requires rotating the two rotating sleeves 40 and simultaneously moving the sliding sleeve 50 away from the rotating sleeve 40 until the rotating sleeve 40 is separated from the sliding sleeve 50, so that the bent pipe 10 can be quickly disassembled, thereby improving the disassembly efficiency.

[0023] In a possible implementation, the second abutment plate 30 is configured as follows: Figure 1 The structure shown, see Figure 1 The second abutment plate 30 has an annular groove 32 on its end surface close to the first abutment plate 20 , a sealing ring 31 is embedded in the bottom wall of the annular groove 32 , and an embedded ring 21 which is plugged into and fits with the annular groove 32 is provided on the end surface of the first abutment plate 20 close to the second abutment plate 30 .

[0024] Specifically, when installing the bent pipe 10, the second abutment plate 30 and the first abutment plate 20 can be quickly positioned relative to each other by simply inserting the embedded ring 21 into the annular groove 32, thereby avoiding radial movement of the second abutment plate 30 and the first abutment plate 20 when connecting the rotating sleeve 40 and the sliding sleeve 50, thereby further realizing the rapid installation of the bent pipe 10.

[0025] When the rotating sleeve 40 and the sliding sleeve 50 are locked, the sealing ring 31 and the end surface of the embedded ring 21 are tightly abutted and matched, thereby ensuring the sealing performance between the second abutting plate 30 and the first abutting plate 20 .

[0026] In a possible implementation, the first bending portion 11 and the second bending portion 12 are configured as follows: Figure 1 The structure shown, see Figure 1 Axially extending positioning grooves 13 are provided on the outer peripheral walls of the first bending portion 11 and the second bending portion 12 , and a positioning block 52 extending into the positioning groove 13 and slidingly cooperating with the positioning groove 13 is provided on the inner wall of the sliding sleeve 50 .

[0027] Specifically, the length of the positioning groove 13 on the first bending portion 11 and the second bending portion 12 is fixed, and the rotation of the sliding sleeve 50 is limited by the sliding cooperation between the positioning block 52 and the positioning groove 13, so that the rotating sleeve 40 can be stably threadedly connected to the sliding sleeve 50. When the rotating sleeve 40 and the sliding sleeve 50 are threadedly connected to a certain extent, the positioning block 52 and the positioning groove 13 abut against the inner wall of the second abutment plate 30, and continue to abut against the sealing ring 31 under the rotation cooperation of the rotating sleeve 40 and the sliding sleeve 50, thereby realizing the sealed connection between the bent pipe 10 and the first straight pipe 1 and the second straight pipe 2 respectively.

[0028] In a possible implementation, the rotating sleeve 40 is configured as follows: Figure 1 The structure shown, see Figure 1 The two rotating sleeves 40 are rotatably connected to the first straight tube 1 and the second straight tube 2 through bearings 41 respectively.

[0029] Specifically, the rotating sleeve 40 rotatably mounted on the outer periphery of the first straight tube 1 is rotatably connected to the first straight tube 1 through a bearing 41, and the rotating sleeve 40 rotatably mounted on the outer periphery of the second straight tube 2 is rotatably connected to the second straight tube 2 through a bearing 41, thereby improving the rotational connection stability of the two rotating sleeves 40 and the first straight tube 1 and the second straight tube 2 respectively.

[0030] In a possible implementation, the flow stabilizer 60 is configured as follows: Figure 1 The structure shown, see Figure 1 A plurality of flow stabilizing plates 60 are provided at intervals along the radial direction of the curved pipe 10 .

[0031] Specifically, the arrangement of n flow stabilizers 60 divides the internal space of the curved pipe 10 into n+1 parts, further buffers the airflow, and allows the airflow to enter the n+1 spaces more evenly, thereby evenly distributing the airflow in the curved pipe 10 and eliminating vibration of the curved pipe 10.

[0032] In some embodiments, see Figure 1 The lengths of the plurality of flow stabilizers 60 gradually increase or decrease in the radial direction of the elbow 10 .

[0033] Specifically, the flow stabilizer 60 extends in an arc shape, which is the same as the extension curve of the elbow 10 , so as to better separate the space inside the elbow 10 .

[0034] Furthermore, from near the center of the elbow 10 to far from the center of the elbow 10, the length of several flow stabilizers 60 gradually increases, that is, the radius of the flow stabilizer 60 gradually increases, providing a flow stabilizer 60 of appropriate length for each location where the flow stabilizer 60 is installed in the elbow 10, thereby improving the flow stabilization effect.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flow stabilizing device for a return air duct, characterized in that: include: The bent pipe is arranged in the up-down direction and has an air inlet end opening downward and an air outlet end opening toward one side, the air inlet end has a first bending portion extending downward, and the air outlet end has a second bending portion extending horizontally; Two first abutment plates, respectively used for fixedly sleeved on the ends of the first straight tube and the second straight tube; Two second abutment plates, respectively fixedly sleeved on the outer ends of the first bending portion and the second bending portion, the two second abutment plates are respectively used to abut and cooperate with the two first abutment plates in a one-to-one correspondence, and a sealing ring for abutting with the end surface of the first abutment plate is embedded on the end surface of the second abutment plate; Two rotating sleeves, respectively used for rotating and sleeved on the outer circumference of the first straight tube and the second straight tube; Two sliding sleeves, respectively slidably sleeved on the outer peripheries of the first bending portion and the second bending portion, the sliding sleeves having an insertion cavity with an opening facing the corresponding rotating sleeve, and the sliding sleeves are threadedly connected to the rotating sleeve; as well as A flow stabilizer, disposed in the curved pipe and extending along the extending direction of the curved pipe, for separating and buffering the airflow; The sliding sleeve can be close to the rotating sleeve and enable the rotating sleeve to be rotated and inserted into the insertion cavity to lock the relative positions of the first abutting disk and the second abutting disk.

2. The flow stabilizing device for the return air duct according to claim 1, characterized in that: The second abutment disk has an annular groove on its end surface close to the first abutment disk, the sealing ring is embedded in the bottom wall of the annular groove, and the first abutment disk has an embedded ring on its end surface close to the second abutment disk that is plugged into the annular groove.

3. The flow stabilizing device for the return air duct according to claim 1, characterized in that: The outer peripheral walls of the first bending portion and the second bending portion are both provided with axially extending positioning grooves, and the inner wall of the sliding sleeve is provided with positioning blocks extending into the positioning grooves and slidingly cooperating with the positioning grooves.

4. The flow stabilizing device for the return air duct according to claim 1, characterized in that: The two rotating sleeves are rotatably connected to the first straight tube and the second straight tube respectively through bearings.

5. The flow stabilizing device for the return air duct according to claim 1, characterized in that: A plurality of flow stabilizing plates are arranged at intervals along the radial direction of the curved pipe.

6. The flow stabilizing device for the return air duct according to claim 5, characterized in that: The lengths of the plurality of flow stabilizing plates gradually increase or decrease in the radial direction of the curved pipe.

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