Check valve structure

Abstract

The utility model provides a check valve structure which comprises a seat body and a shell connected with the seat body, a check valve plate is arranged in the shell, and a supporting frame is fixedly installed on the side wall of the seat body and used for installing a supporting unit. The supporting unit comprises a supporting piece and a connecting rod; a universal structure is connected between the supporting piece and the connecting rod. By means of the supporting piece, in the process that the check valve is actually installed in the corresponding smoke pipe channel inlet, the supporting piece can be placed in the smoke pipe channel from the smoke pipe channel inlet, and then the supporting piece continuously abuts against the inner side of the smoke pipe channel by rotating the locking nut; therefore, the seat body is positioned and supported on the wall surface from the outside, and deviation between the seat body and the wall is avoided in the process that the seat body is pasted on the wall surface through glue.

Description

Technical Field

[0001] The utility model relates to the field of check valves, in particular to a check valve structure. Background Art

[0002] Flue check valves are generally used in the exhaust ducts of household range hoods, including range hood check valves, plastic telescopic smoke pipes and flue check valves. The check valve is mainly composed of a valve body, a rocker, a valve cover, etc.

[0003] At present, in the process of installing a check valve in a household smoke pipe system, most of the time, the seat body is first glued to the outer entrance of the smoke pipe by glue. However, in the actual application process, it is found that since it takes a certain amount of time for the glue to solidify, when the glue is being glued and fastened, the seat body originally aligned with the smoke pipe entrance will be offset due to the effect of gravity, etc., which requires the operator to hold the seat body externally for a certain period of time, resulting in cumbersome operation and low precision. Therefore, a check valve structure is proposed. Utility Model Content

[0004] The utility model aims to provide a check valve structure, which solves the problem that the existing check valve is prone to installation position deviation when in use.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] A check valve structure comprises a seat body and a shell connected to the seat body, a check valve plate is arranged inside the shell, and a support frame is fixedly installed on the side wall of the seat body for installing a support unit;

[0007] The support unit includes a support member and a connecting rod;

[0008] Wherein, a universal structure is commonly connected between the support member and the connecting rod.

[0009] As a preferred technical solution of the present application, the support member includes two support plates arranged up and down, wherein a connecting column is fixed to the surface of one of the support plates, and the other support plate is movably sleeved on the surface of the connecting column.

[0010] As a preferred technical solution of the present application, the universal structure includes a universal seat fixed to the connecting column, and a universal ball is embedded and installed in the universal seat.

[0011] As a preferred technical solution of the present application, one end of the connecting rod is connected to the outer side of the universal ball, and the other end extends above the support frame and is threadedly provided with a locking nut.

[0012] As a preferred technical solution of the present application, a threaded sleeve on the surface of the connecting column is provided with a fastening nut, and the fastening nut can move on the connecting column to lock the two support plates.

[0013] As a preferred technical solution of the present application, the length of the support plate is greater than the inner diameter of the seat body and smaller than the inner diameter of the smoke pipe channel.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the scheme of this application:

[0016] By means of the provided support, during the actual installation of the check valve in the corresponding smoke duct channel entrance, the support can be first placed inside the smoke duct channel entrance, and then the locking nut is rotated to continuously press the support against the inner side of the smoke duct channel, thereby realizing external positioning support of the seat body on the wall, ensuring that the seat body will not deviate from the wall during the process of being glued to the wall, and at the same time, supported and connected by the support unit, there is no need to use bolts to perform secondary connection and tightening of the seat body and the wall during the subsequent installation process, which facilitates the user's operation and is beneficial to the protection of the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the check valve provided in this application;

[0018] Figure 2 A partial structural schematic diagram of the check valve provided in this application;

[0019] Figure 3 A schematic diagram of the structure of the support assembly state of the check valve provided in this application;

[0020] Figure 4 A schematic diagram of the support structure of the check valve provided in this application.

[0021] Indicated in the figure:

[0022] 1. Base; 2. Shell; 3. Support unit; 4. Smoke pipe channel;

[0023] 31. Support member; 32. Connecting rod; 33. Universal structure; 310. Support plate; 311. Connecting column; 312. Fastening nut;

[0024] 330. Universal seat; 331. Universal ball; 332. Locking nut. DETAILED DESCRIPTION

[0025] 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 described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0026] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0028] 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.

[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do 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. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] like Figure 1-Figure 4 As shown, this embodiment proposes a check valve structure, including a seat body 1 and a shell 2 connected to the seat body 1, a check valve plate 21 is provided inside the shell 2, and a support frame 11 is fixedly installed on the side wall of the seat body 1 for installing a support unit 3;

[0031] The support unit 3 includes a support member 31 and a connecting rod 32, wherein a universal structure 33 is commonly connected between the support member 31 and the connecting rod 32;

[0032] When the check valve is actually installed in the exhaust system, the seat body 1 is first fixed to the smoke inlet of the smoke pipe channel 4 by the support unit 3 so that it fits with the wall, and then glue is filled between the wall and the seat body 1. Then, one end of the smoke exhaust pipe is connected to one end of the shell 2. In the actual smoke exhaust process, the smoke exhaust machine inputs smoke into the shell 2 through the pipe. Since the smoke has a certain pressure, the check valve plate 21 is opened to allow the smoke to pass through the seat body 1 and be input into the smoke pipe channel 4. When smoke exhaust is not needed, the check valve plate 21 is closed to block the smoke in the smoke pipe channel 4.

[0033] The check valve plate 21 is an existing structure in a conventional check valve, and its principle is already known in the common knowledge technology and is generally disclosed, and is not further elaborated in this application;

[0034] The support member 31 includes two support plates 310 arranged up and down, wherein a connection column 311 is fixed on the surface of one support plate 310, and the other support plate 310 is movably sleeved on the surface of the connection column 311, and the upper support plate 310 can rotate on the surface of the connection column 311 to adjust the relative angle with the support member 31;

[0035] The universal structure 33 includes a universal seat 330 fixed to the connecting column 311, and a universal ball 331 is embedded and installed in the universal seat 330;

[0036] One end of the connecting rod 32 is connected to the outer side of the universal ball 331, and the other end extends above the support frame 11 and is threaded with a locking nut 332. The universal IU 331 can be freely rotated in the universal seat 330, so as to adjust the relative position of the connection between the support member 31 and the connecting rod 32, so that the support member 31 in the inclined state can be better placed in the inner side of the smoke pipe channel 4 for support use;

[0037] The surface thread sleeve of the connecting column 311 is provided with a fastening nut 312, and the fastening nut 312 can move on the connecting column 311 to lock the two support plates 310. The fastening nut 312 is rotated to move toward the surface of the support plate 310. When the fastening nut 312 continuously contacts the upper support plate 310, the upper support plate 310 gradually contacts the lower support plate 310, thereby ensuring the relative stability of the two support plates 310.

[0038] The length of the support plate 310 is greater than the inner diameter of the base body 1 and smaller than the inner diameter of the smoke pipe channel 4;

[0039] In the actual implementation process, the fastening nut 312 does not realize the mutual locking of the two support plates 310. At this time, the upper support plate 310 can be rotated to overlap with the lower support plate 310, and then the support plate 310 is rotated to tilt in the horizontal direction through the action of the universal structure 33, and then it can be placed in the corresponding smoke pipe channel 4;

[0040] After the two support plates 310 are placed inside the smoke pipe channel 4, the support plates 310 are rotated to be distributed in a cross-staggered state, and then the fastening nuts 312 are rotated to lock the two support plates 310, and then the connecting rod 32 is pulled outward, and during the pulling process, the two support plates 310 are both against the inner wall of the smoke pipe channel 4, and then the locking nuts 332 are rotated, and finally the two support plates 310 are locked by the locking nuts 332, so that the seat body 1 is locked on the surface of the wall by the locking effect of the support plates 310, ensuring the stability of the glue in the process of filling and bonding between the wall and the seat body 1, avoiding the occurrence of position deviation, and at the same time, there is no need to use additional bolts to fasten the four corners of the seat body 1, which is convenient for operation and beneficial to the protection of the wall;

[0041] Then the shell 2 is installed on one side of the base 1 and finally connected to the smoke exhaust pipe to form the transportation of smoke.

[0042] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A check valve structure, characterized in that: It comprises a seat body (1) and a shell (2) connected to the seat body (1), a check valve plate (21) is provided inside the shell (2), and a support frame (11) is fixedly installed on the side wall of the seat body (1) for installing a support unit (3); The support unit (3) comprises a support member (31) and a connecting rod (32); Wherein, a universal structure (33) is commonly connected between the support member (31) and the connecting rod (32).

2. A check valve structure according to claim 1, characterized in that: The support member (31) comprises two support plates (310) arranged one above the other, wherein a connecting column (311) is fixed on the surface of one of the support plates (310), and the other support plate (310) is movably sleeved on the surface of the connecting column (311).

3. A check valve structure according to claim 2, characterized in that: The universal structure (33) comprises a universal seat (330) fixed to the connecting column (311), and a universal ball (331) is embedded and installed in the universal seat (330).

4. A check valve structure according to claim 3, characterized in that: One end of the connecting rod (32) is connected to the outer side of the universal ball (331), and the other end extends above the support frame (11) and is threadedly provided with a locking nut (332).

5. A check valve structure according to claim 2, characterized in that: The surface of the connecting column (311) is threadedly sleeved with a tightening nut (312), and the tightening nut (312) can move on the connecting column (311) to lock the two supporting plates (310).

6. A check valve structure according to claim 2, characterized in that: The length of the support plate (310) is greater than the inner diameter of the base body (1) and smaller than the inner diameter of the smoke pipe channel (4).

Images