A union stand type check valve

Abstract

The utility model discloses a loose joint vertical check valve, including the valve body, the inside of valve body is provided with the valve core, the top of valve body swing joint has the valve cover, the valve cover is linked with the valve body through the connecting mechanism, the left and right sides of valve body all are screw -thread connection and have loose joint mounting head. The utility model discloses a connecting mechanism is set up, when needing to disassemble the valve cover, only need to rotate the handle counterclockwise, and then drive the screw rod rotation, and then make the screw -thread moving plate drive the connecting rod, baffle and the interlocking block forward movement, and then make the interlocking block separate the interlocking groove, then pull the valve cover upwards, and then make the limiting block separate the limiting mouth, thereby can take off the valve cover, and the operation is simple, need not the help of external tool, greatly improved the convenience of operation, has brought great convenience for the user.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a vertical check valve with a live connection. Background Technology

[0002] A check valve, commonly known as a one-way valve, is a valve that automatically opens and closes its valve disc based on the flow of the medium itself, used to prevent backflow. The function of a check valve is to allow the medium to flow in only one direction and prevent reverse flow. These valves typically operate automatically. Under the pressure of fluid flowing in one direction, the valve disc opens; when the fluid flows in the opposite direction, the fluid pressure and the weight of the valve disc combine to act on the valve seat, thus cutting off the flow. Check valves can be mainly divided into two types: swing check valves (rotating around a center of gravity) and lift check valves (moving along an axis). Lift check valves are further divided into vertical check valves and horizontal check valves. Horizontal check valves are installed on horizontal pipelines; vertical check valves are installed in vertical pipelines.

[0003] A search revealed patent application CN201620701647.1, which discloses a check valve comprising a valve body, a valve seat, a valve cover, and a valve disc. The axis of the valve seat forms a predetermined angle with the axis of the valve body channel of the valve body, and the valve seat is inserted into the valve body. According to this utility model, the check valve, with its predetermined angle between the axis of the valve seat and the axis of the valve body channel, reliably seals or opens, exhibiting a simple structure and reliable performance. However, in practical use, the check valve of the aforementioned patent has the following drawback: because the valve cover is connected to the valve body by bolts, disassembly requires external tools such as screwdrivers, causing significant inconvenience to the user. Therefore, we propose a vertical check valve with a union connection. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical check valve with a live joint to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vertical check valve with a union, comprising a valve body, a valve core disposed inside the valve body, a valve cover movably connected to the top of the valve body, the valve cover being connected to the valve body via a connecting mechanism, and union mounting heads threadedly connected to both the left and right sides of the valve body.

[0006] Furthermore, the connecting mechanism includes a support plate, a limiting port, a limiting block, a snap-fit ​​groove, a guide groove, a lead screw, a throttle, a threaded moving plate, a connecting rod, a baffle, and a snap-fit ​​block. Support plates are fixedly connected to the upper left and right sides of the valve body. A limiting port is opened on the top of the support plate. Limit blocks are fixedly connected to the left and right sides of the valve cover.

[0007] Furthermore, the limiting block is L-shaped, and the side of the limiting block away from the valve cover passes through the limiting port and extends to the outside of the limiting port. The limiting block and the limiting port are movably engaged. A locking groove is provided on the front side of the limiting block. A guide groove is provided on the side of the support plate away from the valve cover. A lead screw is rotatably connected to the front side of the inner wall of the guide groove through a bearing.

[0008] Furthermore, the rear end of the lead screw passes through the guide groove and the support plate in sequence and extends to the outside of the support plate and is fixedly connected to a throttle handle. The lead screw and the support plate are movably connected, and a threaded moving plate is threadedly connected to the surface of the lead screw.

[0009] Furthermore, the top, bottom, and sides of the threaded moving plate are in active contact with and tightly fitted to the inner wall of the guide groove, so that the threaded moving plate cannot rotate with the lead screw. The side of the threaded moving plate away from the valve cover passes through the guide groove and extends to the outside of the guide groove.

[0010] Furthermore, a connecting rod is fixedly connected to the front side of the threaded movable plate, a baffle is fixedly connected to the front end of the connecting rod, the rear side of the baffle is in movable contact with the front side of the support plate, and a snap-fit ​​block is movably snapped into the inside of the snap-fit ​​groove.

[0011] Furthermore, the front side of the snap-fit ​​block penetrates the snap-fit ​​groove and extends to the outside of the snap-fit ​​groove, and the front side of the snap-fit ​​block is fixedly connected to the rear side of the baffle.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model, through the setting of a connecting mechanism, allows for easy removal of the valve cover by simply turning the handle counterclockwise. This rotation causes the lead screw to rotate, which in turn causes the threaded moving plate to move the connecting rod, baffle, and locking block forward. This disengages the locking block from the locking groove, and then the valve cover is pulled upwards, causing the limiting block to disengage from the limiting port. Thus, the valve cover can be removed. The operation is simple, requires no external tools, greatly improves the convenience of operation, and brings great convenience to the user.

[0014] The limiting block in the connecting mechanism is L-shaped and is movably engaged with the limiting port on the support plate, which can play a preliminary limiting role on the valve cover.

[0015] When the rotation drives the lead screw to rotate in both directions, the threaded moving plate moves along the guide groove under the drive of the lead screw, and then drives the baffle and the locking block to move through the connecting rod, so that the locking block can engage or disengage with the locking groove on the limit block, realizing the quick fixing and disassembly of the valve cover and the valve body. The structure is ingeniously designed and the operation is simple and efficient. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a side view of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the valve cover of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the support plate of this utility model.

[0021] In the diagram: 1. Valve body; 2. Valve cover; 3. Connecting mechanism; 301. Support plate; 302. Limit port; 303. Limit block; 304. Snap-fit ​​groove; 305. Guide groove; 306. Screw; 307. Rotary handle; 308. Threaded moving plate; 309. Connecting rod; 310. Baffle; 311. Snap-fit ​​block; 4. Union mounting head. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] Please see Figure 1-5A vertical check valve with a union includes a valve body 1, with a valve core (not shown in the figure) inside the valve body 1. The top of the valve body 1 is open, and a valve cover 2 is movably connected to the top of the valve body 1. The valve cover 2 is connected to the valve body 1 through a connecting mechanism 3. Both the left and right sides of the valve body 1 are threaded with union mounting heads 4. The end of the union mounting head 4 is provided with a standard threaded interface, which can be quickly connected to an external pipeline.

[0025] Specifically, the connecting mechanism 3 includes a support plate 301, a limiting port 302, a limiting block 303, a snap-fit ​​groove 304, a guide groove 305, a lead screw 306, a throttle 307, a threaded moving plate 308, a connecting rod 309, a baffle 310, and a snap-fit ​​block 311. The support plate 301 is fixedly connected to the upper left and right sides of the valve body 1. The top of the support plate 301 has a limiting port 302. The limiting block 303 is fixedly connected to the left and right sides of the valve cover 2.

[0026] In practical implementation, the limiting block 303 is L-shaped. The side of the limiting block 303 away from the valve cover 2 passes through the limiting port 302 and extends to the outside of the limiting port 302. The limiting block 303 and the limiting port 302 are movably engaged. A engaging groove 304 is provided on the front side of the limiting block 303. A guide groove 305 is provided on the side of the support plate 301 away from the valve cover 2. A lead screw 306 is rotatably connected to the front side of the inner wall of the guide groove 305 through a bearing.

[0027] Specifically, the rear end of the lead screw 306 passes through the guide groove 305 and the support plate 301 in sequence and extends to the outside of the support plate 301 and is fixedly connected to the handle 307. The lead screw 306 is movably connected to the support plate 301, and a threaded moving plate 308 is threadedly connected to the surface of the lead screw 306.

[0028] In practice, the top, bottom and sides of the threaded moving plate 308 are in active contact with and tightly fitted to the inner wall of the guide groove 305, so that the threaded moving plate 308 cannot rotate with the lead screw 306. The side of the threaded moving plate 308 away from the valve cover 2 passes through the guide groove 305 and extends to the outside of the guide groove 305.

[0029] Specifically, a connecting rod 309 is fixedly connected to the front side of the threaded moving plate 308, and a baffle 310 is fixedly connected to the front end of the connecting rod 309. The rear side of the baffle 310 is in movable contact with the front side of the support plate 301, and a snap-fit ​​block 311 is movably snapped into the inside of the snap-fit ​​groove 304.

[0030] In practice, the front side of the snap-fit ​​block 311 penetrates the snap-fit ​​groove 304 and extends to the outside of the snap-fit ​​groove 304, and the front side of the snap-fit ​​block 311 is fixedly connected to the rear side of the baffle 310.

[0031] In practical applications: When it is necessary to remove the valve cover 2, simply turn the handle 307 counterclockwise, which will drive the lead screw 306 to rotate, thereby causing the threaded moving plate 308 to drive the connecting rod 309, the baffle 310 and the locking block 311 to move forward, thereby causing the locking block 311 to disengage from the locking groove 304. Then, pull the valve cover 2 upward, thereby causing the limit block 303 to disengage from the limit port 302, thus removing the valve cover 2. The structure is ingeniously designed and the operation is simple and efficient.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical check valve with a union joint, comprising a valve body (1), characterized in that: The valve body (1) is movably connected to the top of the valve cover (2), and the valve cover (2) is connected to the valve body (1) through a connecting mechanism (3). Both the left and right sides of the valve body (1) are threaded with a union mounting head (4).

2. The vertical check valve with a union as described in claim 1, characterized in that: The connecting mechanism (3) includes a support plate (301), a limiting port (302), a limiting block (303), a snap-fit ​​groove (304), a guide groove (305), a lead screw (306), a throttle (307), a threaded moving plate (308), a connecting rod (309), a baffle (310), and a snap-fit ​​block (311). The support plate (301) is fixedly connected to the upper left and right sides of the valve body (1). The top of the support plate (301) has a limiting port (302). The limiting block (303) is fixedly connected to the left and right sides of the valve cover (2).

3. A vertical check valve with a union as described in claim 2, characterized in that: The limiting block (303) is L-shaped. The side of the limiting block (303) away from the valve cover (2) passes through the limiting port (302) and extends to the outside of the limiting port (302). The limiting block (303) and the limiting port (302) are movably engaged. The front side of the limiting block (303) is provided with a engaging groove (304). The side of the support plate (301) away from the valve cover (2) is provided with a guide groove (305). The front side of the inner wall of the guide groove (305) is rotatably connected to a lead screw (306) through a bearing.

4. A vertical check valve with a union as described in claim 3, characterized in that: The rear end of the lead screw (306) passes through the guide groove (305) and the support plate (301) in sequence and extends to the outside of the support plate (301) and is fixedly connected to the handle (307). The lead screw (306) is movably connected to the support plate (301), and the surface of the lead screw (306) is threadedly connected to the threaded moving plate (308).

5. A vertical check valve with a union as described in claim 4, characterized in that: The top, bottom and sides of the threaded moving plate (308) are in active contact with and tightly fitted to the inner wall of the guide groove (305). The side of the threaded moving plate (308) away from the valve cover (2) passes through the guide groove (305) and extends to the outside of the guide groove (305).

6. A vertical check valve with a union as described in claim 5, characterized in that: A connecting rod (309) is fixedly connected to the front side of the threaded moving plate (308), and a baffle (310) is fixedly connected to the front end of the connecting rod (309). The rear side of the baffle (310) is in movable contact with the front side of the support plate (301), and a snap-fit ​​block (311) is movably snapped into the inside of the snap-fit ​​groove (304).

7. A vertical check valve with a union as described in claim 6, characterized in that: The front side of the snap-fit ​​block (311) passes through the snap-fit ​​groove (304) and extends to the outside of the snap-fit ​​groove (304). The front side of the snap-fit ​​block (311) is fixedly connected to the rear side of the baffle (310).

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