CN219606137U

CN219606137U - Check valve with several word frame construction

Info

Publication number: CN219606137U
Application number: CN202320589914.0U
Authority: CN
Inventors: 赵琳; 刘文武; 张彦刚; 张庆涛
Original assignee: Shijiazhuang Xianchu Nuclear Equipment Co Ltd
Current assignee: Shijiazhuang Xianchu Nuclear Equipment Co Ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-08-29
Anticipated expiration: 2033-03-23

Abstract

The utility model discloses a check valve with a Chinese character 'ji' shaped frame structure, which comprises a valve body, wherein a Chinese character 'ji' shaped frame is arranged above the inner part of the valve body, and a valve seat is fixed on the inner side of a concave part of the Chinese character 'ji' shaped frame and below the inner part of the valve body; the valve rod is rotationally connected with two sides of the valve body and penetrates out of the valve body to be fixedly connected with the heavy hammer through the heavy hammer rod; the upper side of the frame is provided with a vent; the valve rod is fixedly connected with the valve plate through a valve plate connecting piece; the valve plate is clung to the hemispherical bulge of the rubber ring in the valve seat. The utility model solves the problem of overlarge flow resistance of the existing check valve.

Description

Check valve with several word frame construction

Technical Field

The utility model belongs to the technical field of valves, and relates to a check valve with a Chinese character 'ji' shaped frame structure.

Background

The working principle of the check valve is as follows: when the system is in operation, the valve plate is opened by the forward pressure formed in front of the valve, and when the system stops operation, the valve is automatically closed under the self-gravity action of the heavy hammer and the valve plate due to the loss of the forward pressure, so that the system is prevented from flowing backwards. The check valve is a safety valve, is used in ventilation systems such as fans, central air conditioners, air treatment units and the like, the ventilation system is used for providing flow for the system, the problem of influencing flow resistance in the system is the main problem of the whole system design, when the fans are closed, the valuable equipment is easily damaged when pressure in the pipelines is released or other flow flowing backwards through the air duct system is required to reverse the fan impeller, and the check valve is used for ensuring the flow as much as possible on the premise of preventing the system from flowing backwards.

Existing check valves have problems: since conventionally the valve stem-to-valve plate transmission is located in the medium flow passage of the valve body, the flow of medium through the valve is affected during operation, increasing the flow resistance. In order to reduce the flow resistance of the small-caliber valve, reduce energy consumption, improve economic benefit, reduce abrasion and prolong service life, a novel check valve is necessary to be provided.

Disclosure of Invention

In order to achieve the above purpose, the utility model provides a check valve with a frame structure in a shape like a Chinese character 'ji', which solves the problem of overlarge flow resistance of the existing check valve.

In order to solve the technical problems, the utility model adopts the technical scheme that the check valve with the structure of the Chinese character 'ji' shaped frame comprises a valve body, wherein the upper part of the interior of the valve body is the Chinese character 'ji' shaped frame, and a valve seat is fixed on the inner side of a concave part of the Chinese character 'ji' shaped frame and the lower part of the interior of the valve body; the valve rod is rotationally connected with two sides of the valve body and penetrates out of the valve body to be fixedly connected with the heavy hammer through the heavy hammer rod; the upper side of the frame is provided with a vent; the valve rod is fixedly connected with the valve plate through a valve plate connecting piece; the valve plate is clung to the hemispherical bulge of the rubber ring in the valve seat.

Further, the valve rod and the valve plate connecting piece are detachably and fixedly connected through a taper pin.

Further, the valve further comprises a cover plate, and the cover plate is fixedly connected with the vent hole of the valve body through bolts and welding studs fixed at the vent hole.

Further, a sealing gasket is arranged between the cover plate and the valve body.

Further, the valve further comprises a buffer assembly, wherein the buffer assembly is fixed on the inner side of the side frame of the valve body.

Further, the buffer assembly consists of a bending steel plate and a rubber block inside the bending steel plate, and the bending steel plate is fixed with the rubber block through a pin shaft.

Further, the length of the upper end of the valve plate exceeding the contact point between the valve plate and the rubber ring is not more than 10mm.

The beneficial effects of the utility model are as follows:

the check valve provided by the utility model has the advantages of simple structure, simplicity and convenience in assembly, effectively reduced flow resistance of the small-caliber valve, reduced energy consumption, reduced abrasion of medium flow to structural members such as a valve plate and the like, and prolonged service life.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a check valve according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view A-A of fig. 1.

Fig. 3 is an enlarged view at a in fig. 2.

In the figure, a valve body 1, a valve plate 2, a valve rod 3, a cover plate 4, a sealing gasket 5, a bolt 6, a welding stud 7, a taper pin 8, a buffer component 9 and a rubber ring 10.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-3, the utility model provides a check valve with a rectangular frame structure, which comprises a valve body 1, wherein the valve body 1 is formed by splicing and welding upper and lower frames and side frames which are formed by bending; the upper part of the inner part of the valve body 1 is provided with a U-shaped frame, and the valve seat is fixed on the inner side of the concave part of the U-shaped frame and the lower part of the inner part of the valve body 1; the valve rod 3 is rotationally connected with two sides of the valve body 1 and penetrates out of the valve body 1 to be fixedly connected with the heavy hammer through the heavy hammer rod; the upper side of the frame is provided with a vent; the valve rod 3 is fixedly connected with the valve plate 2 through a valve plate connecting piece; the valve plate 2 is tightly clung to the hemispherical bulge of the rubber ring 10 in the valve seat, the length of the upper end of the valve plate 2 exceeding the contact point is not more than 10mm, and the opening does not generate interference. The valve frame is folded outwards into a shape like a Chinese character 'ji', and the valve rod 3 is hidden in the vent, so that the flow rate of medium passing through the valve is ensured, and the flow resistance is reduced.

In some embodiments, the valve rod 3 and the valve plate connecting piece are detachably and fixedly connected through the taper pin 8, so that convenience and reliability are realized.

In some embodiments, the cover plate 4 is fixedly connected with the vent of the valve body 1 through the bolt 6 and the welding stud 7 fixed at the vent, and the welding stud 7 can be welded to the inner side of the valve body 1 in advance, so that the processing and assembly efficiency is improved; a sealing gasket 5 is arranged between the cover plate 4 and the valve body 1, so that the tightness of the components is ensured. The vent can be used as a processing channel, and after the cover plate 4 is opened, the valve rod 3 and the valve plate connecting piece are conveniently assembled, and the valve body 1 does not need to be disassembled.

In some embodiments, the buffer assembly 9 is fixed on the inner side of the side frame of the valve body 1, and plays a role of limiting and buffering the valve plate 2, so as to prevent the valve plate 2 from being excessively opened.

In some embodiments, the buffer assembly 9 is composed of a bent steel plate and a rubber block inside the bent steel plate, the bent steel plate and the rubber block are fixed through a pin shaft, and the valve plate 2 is tightly attached to the rubber block when being opened for 90 degrees.

The working process of the utility model is as follows:

the valve plate 2 is opened under the action of forward wind force, the valve rod 3 and the heavy hammer are driven to rotate, the heavy hammer is lifted until the valve plate 2 is opened by 90 degrees and is contacted with the buffer assembly 9, and at the moment, the valve is fully opened. Because the valve rod 3 is hidden in the frame with the shape of a Chinese character 'ji', the flow resistance is greatly reduced, and the flow is increased. When the forward wind power disappears, the valve plate 2 is closed under the action of the heavy hammer and the valve rod 3, and backflow is prevented.

In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims

1. The check valve with the structure of the Chinese character 'ji' is characterized by comprising a valve body (1), wherein a Chinese character 'ji' shaped frame is arranged above the inner part of the valve body (1), and a valve seat is fixed on the inner side of a concave part of the Chinese character 'ji' shaped frame and below the inner part of the valve body (1); the valve rod (3) is rotationally connected with two sides of the valve body (1) and penetrates out of the valve body (1) to be fixedly connected with the heavy hammer through the heavy hammer rod; the upper side of the frame is provided with a vent; the valve rod (3) is fixedly connected with the valve plate (2) through a valve plate connecting piece; the valve plate (2) is closely clung to the hemispherical bulge of the rubber ring (10) in the valve seat.

2. A check valve with a frame structure in the shape of a Chinese character 'ji', according to claim 1, characterized in that the valve stem (3) and the valve plate connecting piece are detachably and fixedly connected by means of a conical pin (8).

3. A check valve with a frame structure in the shape of a Chinese character 'ji', according to claim 1, characterized in that the cover plate (4) is fixedly connected with the vent hole of the valve body (1) through bolts (6) and welding studs (7) fixed at the vent hole.

4. A check valve with a frame structure in the shape of a Chinese character 'ji', according to claim 3, characterized in that a sealing gasket (5) is arranged between the cover plate (4) and the valve body (1).

5. A check valve with a counter frame structure according to claim 1, characterized in that it further comprises a damping assembly (9), said damping assembly (9) being fixed inside the side frame of the valve body (1).

6. The check valve with the structure of the Chinese character 'ji' type frame according to claim 5, wherein the buffer component (9) consists of a bending steel plate and a rubber block inside the bending steel plate, and the bending steel plate and the rubber block are fixed through a pin shaft.

7. A check valve with a frame structure in the shape of a Chinese character 'ji', according to claim 1, characterized in that the length of the upper end of the valve plate (2) beyond the contact point between the valve plate (2) and the rubber ring (10) is not more than 10mm.