Press-in type line-shaped connector for ventilation fan and air duct

Abstract

The utility model discloses a press-in type ventilation fan and air duct straight joint, which mainly comprises a fan, an air duct, a first flange, a second flange and a sleeve, the first flange is provided with a first ring groove, the second flange is provided with a second ring groove, the first ring groove is provided with a first fixing hole, the second ring groove is provided with a second fixing hole, and the sleeve is provided with two third flanges. Each third flange is provided with an annular table and an elastic connecting piece, the fan and the air duct are connected through the first flange, the second flange and the two third flanges, the first flange and the third flanges are stably connected through a plurality of bolts, and the second flange and the third flanges are stably connected through a plurality of bolts. And the two bosses are stably connected with the first ring groove and the second ring groove for the second time, and then the elastic connecting pieces are stably connected with the first fixing holes and the second fixing holes for the third time, so that the connection between the fan and the air duct is stable, and the sealing performance of the connection between the fan and the air duct is better.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, in particular to a push-in ventilation fan and a straight-joint of a wind tube. Background Art

[0002] The straight-line connection refers to the connection of the connecting devices in a straight-line arrangement, usually including the connection structure between the main body and both ends of the main body, such as flange connection, clamp connection, etc. When connecting the push-in ventilation fan to the air duct, the flange connection is often used for connection.

[0003] In the prior art, a flange is provided at the connection between the fan and the duct, and the fan and the duct are connected by using a plurality of bolts and flanges, wherein the bolts are provided on the side of the flange. In order to avoid a large wind loss when the fan delivers wind, a sealing gasket is usually provided, so that the connection sealing performance between the fan and the duct is better, thereby ensuring a small wind loss. However, there are still some problems in the connection process:

[0004] 1. Since the fan will vibrate when delivering air, the bolts may become loose due to the vibration, which in turn causes the connection between the flanges to loosen, resulting in a gap between the flange and the gasket, ultimately leading to poor sealing effect.

[0005] Therefore, there is an urgent need for a push-in ventilation fan and a straight-joint of the air duct, so that the connection between the fan and the air duct is stable, thereby ensuring a strong sealing performance of the connection. Utility Model Content

[0006] The utility model aims to provide a push-in ventilation fan and a straight-joint of a wind tube for solving the technical problem of poor connection sealing caused by loose bolts.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A push-in ventilation fan and a straight-line joint for a wind tube, characterized by comprising:

[0009] A first flange is arranged at one end of the fan, the first flange is provided with a first annular groove, and an upper side wall of the first annular groove is provided with a plurality of first fixing holes;

[0010] A second flange is disposed at one end of the wind tube, the second flange is provided with a second annular groove, and an upper side wall of the second annular groove is provided with a plurality of second fixing holes; and

[0011] The sleeve has third flanges at both ends facing each other, and the side walls of the two third flanges are respectively provided with ring platforms matched with the first ring groove and the second ring groove, the two ring platforms are oriented in opposite directions, and the outer walls of the ring platforms are circumferentially provided with multiple elastic connectors, and the multiple elastic connectors of the two ring platforms are respectively matched with the first fixing holes and the second fixing holes. When the fan is connected to the wind tube, the two ring platforms are respectively inserted into the first ring groove and the second slide groove, and the multiple elastic connectors of the two ring platforms are respectively inserted into the multiple first fixing holes and the second fixing holes.

[0012] In some embodiments, two sealing gaskets are further included, and the two sealing gaskets are respectively arranged between the first flange and the third flange and between the second flange and the third flange, and the two sealing gaskets are located on one side of the inner wall of the ring platform.

[0013] In some embodiments, the first flange, the second flange and the side wall of the second flange are provided with a plurality of bolt holes arranged in sequence and at intervals.

[0014] In some embodiments, the third flange is provided with a sealing ring groove and an inflation tube, a sealing airbag is provided in the sealing ring groove, the sealing ring groove and the ring platform are oriented in the same direction, and the inflation tube passes through the side wall of the third flange and is connected to the sealing airbag.

[0015] In some embodiments, a plurality of first fixing holes are sequentially spaced apart on the first flange, a plurality of second fixing holes are sequentially spaced apart on the second flange, and a plurality of elastic connectors are sequentially spaced apart on the ring platform.

[0016] In some embodiments, when the blower is connected to the air cylinder, the sealing airbag is located between the sealing pad and the ring platform.

[0017] In some embodiments, the ring platform is provided with a plurality of grooves spaced apart in sequence, the plurality of elastic connectors each include a connecting rod and a connecting spring, the plurality of connecting springs are respectively arranged in the grooves, one end of the plurality of connecting rods are respectively connected to the springs, and when the fan is connected to the wind tube, the plurality of connecting rods are respectively inserted into the plurality of first fixing holes and the plurality of second fixing holes.

[0018] In some embodiments, the upper side wall at the notch of the first annular groove has a chamfer, the upper side wall at the notch of the second annular groove has a chamfer, and the end of the connecting rod away from the connecting spring has a curved surface.

[0019] Compared with the prior art, the advantages of the utility model are:

[0020] In the utility model, the fan and the duct are connected by a first flange, a second flange and two third flanges, wherein the first flange and the third flange as well as the second flange and the third flange are stably connected by multiple means, and a second stable connection is made with the first annular groove and the second annular groove through two bosses, and a third stable connection is made with multiple elastic connectors and the first fixing hole and the second fixing hole, thereby making the connection between the fan and the duct stable, and further making the connection sealing of the fan and the duct better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a cross-sectional schematic diagram of a push-in ventilation fan and a wind tube after a straight-line joint is connected to the fan and the wind tube according to an embodiment of the present application;

[0023] Figure 2 It is a front cross-sectional schematic diagram of a first flange of a push-in ventilation fan and a straight-joint of a wind tube according to an embodiment of the present application;

[0024] Figure 3 It is a side view schematic diagram of the first flange of the push-in ventilation fan and the straight joint of the air duct in the embodiment of the present application;

[0025] Figure 4 It is a front cross-sectional schematic diagram of the third flange of the push-in ventilation fan and the straight-line joint of the air duct according to the embodiment of the present application;

[0026] Figure 5 A side view of a third flange of a push-in ventilation fan and a straight-joint of a wind tube according to an embodiment of the present application;

[0027] Figure 6 It is a front cross-sectional schematic diagram of a second flange of a push-in ventilation fan and a straight-joint of a wind tube according to an embodiment of the present application;

[0028] Figure 7 A side view of a second flange of a push-in ventilation fan and a straight-joint of a wind tube according to an embodiment of the present application;

[0029] Figure 8 For the embodiments of this application Figure 1 An enlarged schematic diagram of the part marked A;

[0030] Reference numerals:

[0031] 100- fan,

[0032] 200-Hair dryer,

[0033] 300-first flange, 310-first ring groove, 320-first fixing hole, 330-first groove,

[0034] 400-second flange, 410-second annular groove, 420-second fixing hole, 430-second groove,

[0035] 500-sleeve, 510-third flange, 511-ring platform, 511a-groove, 512-elastic connector, 512a-connecting rod, 512b-connecting spring, 513-third groove, 520-sealing ring groove, 530-inflating tube, 540-sealing airbag

[0036] 600-Sealing gasket,

[0037] 700-bolt hole,

[0038] 800-Switch valve,

[0039] 900-chamfer. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 present utility model.

[0043] In addition, the terms “first”, “second”, “third”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0044] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", etc. 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0047] Example 1

[0048] It should be understood that when a straight-line connection is used to connect the fan and the air duct of a push-in fan, a flange connection is usually adopted, wherein two flanges are connected by multiple bolts and a sealing gasket is arranged between the two flanges. However, since the air supply of the fan will cause the fan and the air duct to vibrate, the bolts may become loose due to the vibration, thereby causing the connection between the flanges to loosen, resulting in a gap between the flange and the sealing gasket, and ultimately resulting in poor sealing effect.

[0049] Therefore, in order to improve the above problems, this embodiment provides a straight joint between a push-in ventilation fan and a wind tube, comprising a first flange 300, a second flange 400 and a sleeve 500. This joint device is mainly used for stably connecting the fan 100 and the wind tube 200.

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the first flange 300 is arranged at one end of the fan 100, wherein the side wall of the first flange 300 is provided with a plurality of bolt holes 700 arranged in sequence and spaced apart for bolt connection, and the side wall of the first flange 300 is provided with a first annular groove 310, and the inner wall on the upper side of the first annular groove 310 is provided with a plurality of first fixing holes 320 arranged in sequence and spaced apart.

[0051] like Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, the second flange 400 is arranged at one end of the wind cylinder 200, and the side wall of the second flange 400 is provided with a plurality of bolt holes 700 arranged in sequence and spaced apart for bolt connection, and the side wall of the second flange 400 is provided with a second annular groove 410, wherein, when the fan 100 and the wind cylinder 200 are connected, the notch of the first annular groove 310 and the notch of the second annular groove 410 are opposite, and the inner wall on the upper side of the second annular groove 410 is provided with a plurality of second fixing holes 420 arranged in sequence and spaced apart.

[0052] In this embodiment, Figure 1 , Figure 4 , Figure 5 and Figure 8 As shown, both ends of the sleeve 500 are provided with a third flange 510, and the two third flanges 510 are respectively adapted to the shapes of the first flange 300 and the second flange 400, wherein both flanges are provided with a ring platform 511, specifically, the shapes of the two ring platforms 511 are respectively adapted to the first annular groove 310 and the second annular groove 410, when the fan 100 is connected to the wind tube 200, the ring platforms 511 on the third flanges 510 at both ends of the sleeve 500 are respectively oriented towards the first annular groove 310 and the second annular groove 410, so that the two ring platforms 511 are respectively inserted into the first annular groove 310 and the second annular groove 410.

[0053] Among them, Figure 1-Figure 8As shown, the outer walls of the two annular platforms 511 are sequentially spaced apart in the circumferential direction with a plurality of elastic connecting members 512 and a plurality of grooves 511a, wherein the plurality of elastic connecting members 512 each include a connecting spring 512b and a connecting rod 512a, wherein the plurality of connecting rods 512a are respectively arranged in the plurality of grooves 511a, and a connecting spring 512b is arranged between the connecting rod 512a and the inner wall opposite to the notch of the groove 511a, and the connecting rod 512a is connected to the connecting spring 512b, so that the connecting spring 512b drives the connecting rod 512a to move relative to the groove 511a, when the fan 100 is connected to the wind tube 200, one of the two bosses is inserted into the first annular groove 310, and the wall of the boss is fitted with the groove wall of the first annular groove 310, wherein the plurality of connecting rods 512a arranged on the upper outer wall of the boss are squeezed, thereby squeezing the connecting spring 512b, so that the connecting elastic The spring 512b is in a compressed state. When the connecting rod 512a moves to the first fixing hole 320 along with the displacement of the boss, the squeezing effect on the connecting rod 512a is reduced, and the squeezing effect on the connecting spring 512b is reduced, so that the connecting spring 512b stretches, and then drives the connecting rod 512a to move toward the first fixing hole 320 relative to the groove 511a, so that one end of the connecting rod 512a is located in the first fixing hole 320, and the other end of the connecting rod 512a is located in the groove 511a, so that the connection between the first flange 300 and the third flange 510 is stable, wherein the boss cooperates with the first annular groove 310 and the connecting rod 512a cooperates with the first fixing hole 320, and the displacement of the first flange 300 and the third flange 510 is fixed from multiple directions, so that the connection between the first flange 300 and the third flange 510 is stable.

[0054] In this embodiment, the connection relationship between the second flange 400 and the third flange 510 is consistent with the connection relationship and position relationship between the first flange 300 and the third flange 510 .

[0055] Among them, the side wall of the third flange 510 is provided with a plurality of bolt holes 700 corresponding to the first flange 300 and the second flange 400. When the two third flanges 510 are respectively connected to the first flange 300 and the second flange 400, a plurality of bolts pass through the first flange 300, the second flange 400 and the third flange 510 respectively, so that the two third flanges 510 are respectively bolted to the first flange 300 and the second flange 400, thereby further stabilizing the connection between the two air ducts 200 and the fan 100.

[0056] Among them, the inner walls of the two bosses are provided with a plurality of grooves 511a and elastic connectors 512 arranged in sequence, wherein the elastic connector 512 includes a connecting rod 512a and a connecting spring 512b, the inner wall of the lower side of the first annular groove 310 is provided with a plurality of first fixing holes 320, and the inner wall of the lower side of the second annular groove 410 is provided with a plurality of second fixing holes 420. When the fan 100 and the wind tube 200 are connected through the sleeve, the plurality of connecting rods 512a on the inner walls of the two bosses are respectively inserted into the first fixing holes 320 of the first annular groove 310 and the second fixing holes 420 of the second annular groove 410, thereby making the connection between the fan 100 and the wind tube 200 stable.

[0057] In a more complete solution, sealing gaskets 600 are provided between the first flange 300 and the third flange 510 and between the second flange 400 and the third flange 510, and the two sealing gaskets 600 are located on one side of the inner wall of the ring platform 511. When the fan 100 is connected to the wind tube 200, the two sides of one of the sealing gaskets 600 are respectively fitted and abutted against the side walls of the first flange 300 and the third flange 510, and the two sides of the other sealing gasket 600 are respectively fitted and abutted against the side walls of the second flange 400 and the third flange 510.

[0058] Among them, the first flange 300 is provided with a first groove 330, the second flange 400 is provided with a second groove 430, and the third flange 510 is provided with a third groove 513, and the first groove 330, the second groove 430 and the third groove 513 are all adapted to the sealing gasket 600. When the fan 100 is connected to the wind tube 200, the two third grooves 513 are respectively aligned with the first groove 330 and the second groove 430, and the two sealing gaskets 600 are respectively arranged in the first groove 330 and the third groove and in the second groove 430 and the third groove 513.

[0059] In this embodiment, Figure 1-Figure 8 As shown, the upper inner wall and the lower inner wall at the notch of the first annular groove 310 both have a chamfer 900, and the upper inner wall and the lower inner wall at the notch of the second annular groove 410 both have a chamfer 900, and the ends of the plurality of connecting rods 512a facing away from the connecting spring 512b have a curved surface, so that when the two bosses are respectively removed into the first annular groove 310 and the second annular groove 410, the curved surfaces on the plurality of connecting rods 512a are abutted against the chamfer 900 of the notch of the first annular groove 310 and the chamfer 900 of the notch of the second annular groove 410, so that the connecting rods 512a can enter the first annular groove 310 and the second annular groove 410 more easily along the chamfer 900 of the first annular groove 310 and the second buffer.

[0060] In this embodiment, the fan 100 and the wind duct 200 are connected by a first flange 300, a second flange 400 and two third flanges 510, wherein the first flange 300 and the third flange 510 as well as the second flange 400 and the third flange 510 are stably connected by multiple means, and a second stable connection is made with the first annular groove 310 and the second annular groove 410 through two bosses, and a third stable connection is made with multiple elastic connectors 512 and the first fixing hole 320 and the second fixing hole 420, thereby making the connection between the fan 100 and the wind duct 200 stable, and further making the connection sealing of the fan 100 and the wind duct 200 better.

[0061] Example 2

[0062] It should be understood that when performing bolt connections manually, since it is impossible to determine whether the bolt connections are tightened, the operator may apply a large force to the bolts, causing the bolts to squeeze the flange with a large force, thereby damaging the flange, or causing the flange to squeeze the sealing gasket 600 with a large force, thereby damaging the sealing gasket 600 and affecting the sealing effect of the connection.

[0063] Therefore, in order to improve the above situation and further improve the sealing performance of the connection between the fan 100 and the wind tube 200, according to the joint provided in the above embodiment, in this embodiment, Figure 1-Figure 7 As shown, the two third flanges 510 are both provided with a sealing ring groove 520 and an inflation tube 530, wherein a sealing airbag 540 is provided in the sealing ring groove 520, and the sealing airbag 540 is a rubber airbag, and the notch of the sealing ring groove 520 is in the same direction as the ring platform 511, and the inflation tube 530 passes through the side wall of the third flange 510 and communicates with the sealing airbag 540, wherein, before the fan 100 is connected to the wind tube 200, the inflation airbag is not inflated, and when the fan 100 is connected to the wind tube 200, the inflation airbag is not inflated. At this time, the side wall of the first flange 300 and the side wall of the second flange 400 are respectively fitted with the notches of the sealing ring grooves 520 of the two third flanges 510, and the notches of the sealing ring grooves 520 are closed. At this time, the sealing airbag 540 is inflated through the inflation tube 530, so that the outer wall of the sealing airbag 540 is abutted against the inner wall of the sealing ring groove 520 and the side walls of the first flange 300 and the second flange 400, thereby improving the connection sealing performance of the fan 100 and the wind tube 200.

[0064] In this embodiment, when the fan 100 is connected to the wind tube 200 , the sealing airbag 540 is located between the sealing gasket 600 and the ring platform 511 , so as to ensure that when the sealing gasket 600 is damaged, it can still be sealed by the sealing airbag 540 .

[0065] The inflation tube 530 passes through the side wall of the third flange 510 and is connected to the sealing airbag 540 , and a switch valve 800 is provided at one end of the inflation tube 530 away from the side wall of the third flange 510 . The switch valve 800 is used to control the opening and closing of the inflation tube 530 .

Claims

1. A push-in ventilation fan and air duct straight joint, used to connect a fan (100) and an air duct (200), characterized in that: include: A first flange (300) is arranged at one end of the fan (100), the first flange (300) is provided with a first annular groove (310), and the upper side wall of the first annular groove (310) is provided with a plurality of first fixing holes (320); A second flange (400) is disposed at one end of the wind tube (200), the second flange (400) is provided with a second annular groove (410), and the upper side wall of the second annular groove (410) is provided with a plurality of second fixing holes (420); and A sleeve (500) is provided with third flanges (510) at two opposite ends. Side walls of the two third flanges (510) are respectively provided with ring platforms (511) adapted to the first annular groove (310) and the second annular groove (410). The two annular platforms (511) face opposite directions. A plurality of elastic connectors (512) are circumferentially provided on the outer wall of the annular platform (511). The plurality of elastic connectors (512) of the two annular platforms (511) are respectively adapted to the first fixing holes (320) and the second fixing holes (420). When the fan (100) is connected to the wind tube (200), the two annular platforms (511) are respectively inserted into the first annular groove (310) and the second annular groove (410), and the plurality of elastic connectors (512) of the two annular platforms (511) are respectively inserted into the plurality of first fixing holes (320) and the second fixing holes (420).

2. The push-in ventilation fan and the straight connector of the air duct according to claim 1, characterized in that: It also includes two sealing gaskets (600), which are respectively arranged between the first flange (300) and the third flange (510) and between the second flange (400) and the third flange (510), and the two sealing gaskets (600) are located on one side of the inner wall of the ring platform (511).

3. The push-in ventilation fan and the straight connector of the air duct according to claim 2, characterized in that: The first flange (300), the second flange (400) and the side wall of the second flange (400) are provided with a plurality of bolt holes (700) arranged in sequence and at intervals.

4. The push-in ventilation fan and the straight-line joint of the air duct according to claim 3, characterized in that: The third flange (510) is provided with a sealing ring groove (520) and an inflation tube (530), a sealing air bag (540) is provided in the sealing ring groove (520), the sealing ring groove (520) and the ring platform (511) are oriented in the same direction, and the inflation tube (530) passes through the side wall of the third flange (510) and is connected to the sealing air bag (540).

5. The push-in ventilation fan and the straight-line joint of the air duct according to claim 1, characterized in that: A plurality of the first fixing holes (320) are sequentially arranged at intervals on the first flange (300), a plurality of the second fixing holes (420) are sequentially arranged at intervals on the second flange 4 (00), and a plurality of the elastic connecting members (512) are sequentially arranged at intervals on the ring platform 5 (11).

6. The push-in ventilation fan and the straight connector of the air duct according to claim 4, characterized in that: When the fan (100) is connected to the wind tube (200), the sealing airbag (540) is located between the sealing pad (600) and the ring platform (511).

7. The push-in ventilation fan and the straight-line joint of the air duct according to claim 4, characterized in that: The ring platform (511) is provided with a plurality of grooves (511a) arranged in sequence and at intervals, and the plurality of elastic connecting members (512) each include a connecting rod (512a) and a connecting spring (512b), and the plurality of connecting springs (512b) are respectively arranged in the grooves (511a), and one end of the plurality of connecting rods (512a) is respectively connected to the connecting spring (512b), and when the fan (100) is connected to the wind tube (200), the plurality of connecting rods (512a) are respectively inserted into the plurality of first fixing holes (320) and the plurality of second fixing holes (420).

8. The push-in ventilation fan and the straight connector of the air duct according to claim 7, characterized in that: The upper side wall at the notch of the first annular groove (310) has a chamfer (900), the upper side wall at the notch of the second annular groove (410) has a chamfer (900), and one end of the connecting rod (512a) away from the connecting spring (512b) has a curved surface.

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