CN211423465U

CN211423465U - Check valve with safety device

Info

Publication number: CN211423465U
Application number: CN201922432183.5U
Authority: CN
Inventors: 范作朋
Original assignee: Qingdao Runtong Valve Co ltd
Current assignee: Qingdao Runtong Valve Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-04
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a check valve with a safety device, which comprises a valve body, wherein the upper side wall surface of the valve body is fixedly connected with a valve cover, the lower side wall surface of the valve cover is fixedly connected with a moving column, the inner side wall surface of the moving column is provided with a moving groove, the inner side wall surface of the moving groove is slidably connected with a valve clack main body, the inner side wall surface of the right end of the valve body is fixedly connected with a fixed plate, the outer side wall surface of the fixed plate is fixedly connected with a supporting seat, the inner side wall surface of the supporting seat is slidably connected with the safety device, the safety device is arranged in the check valve, the normal flow of fluid is not influenced at the position close to the outflow end, when the fluid flows back, the fluid is contacted with the right end of an auxiliary valve clack, the sharp-end modeling is arranged, the contact neps of the counter, the accident rate is reduced.

Description

Check valve with safety device

Technical Field

The utility model relates to a check valve technical field specifically is a check valve with safeties.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). In a common lifting check valve, when fluid returns, a valve clack main body cannot fall in time to temporarily seal the interior of a valve body or seal the interior of the valve body in time, and output fluid containing partial impurities is easy to flow back, so that the original fluid is polluted or accidents are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a check valve with safeties to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a check valve with safeties, includes the valve body, the upside wall fixedly connected with valve gap of valve body, the downside wall fixedly connected with action post of valve gap, action groove has been seted up to the inside wall face of action post, the inside wall face sliding connection in action groove has the valve clack main part, inside wall face fixedly connected with fixed plate in the right-hand member of valve body, fixed plate outside wall fixedly connected with supporting seat, the inside wall face sliding connection of supporting seat has safeties.

Preferably, the safety device comprises a movable rod, a tray is fixedly connected to the right side wall surface of the movable rod, an auxiliary valve clack is fixedly connected to the left end of the movable rod, and the left end of the auxiliary valve clack is clamped to the inner side wall surface of the safety opening.

Preferably, the outer side wall surface of the auxiliary valve clack is fixedly connected with a sliding block, and the auxiliary valve clack is fixedly connected with the fixed plate through a spring.

Preferably, the valve cover is fixedly connected with the valve body through a pin shaft.

Preferably, the inner side wall surface of the fixing plate is provided with a through hole.

Compared with the prior art, the beneficial effects of the utility model are that: the safety device is arranged in the device, the normal flow of fluid is not influenced at the position of a near port of the outflow end, when the fluid flows back, the fluid is contacted with the right end of the auxiliary valve flap, the tip shape is arranged, the back-flow fluid is increased by contacting neps with the back-flow fluid, the auxiliary valve flap is rapidly clamped on the inner side wall surface of the safety port, the fluid does not flow into the valve body in a large amount, the probability of fluid pollution possibly caused is reduced, and the accident rate is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view at a.

In the figure: 1. the valve comprises a valve body, 2, a valve cover, 3, a moving column, 4, a moving groove, 5, a valve clack body, 6, a fixing plate, 61, a through hole, 7, a supporting seat, 8, a safety device, 81, a moving rod, 82, a tray, 83, an auxiliary valve clack, 84, a safety opening, 85, a sliding block, 86, a spring, 9 and a pin shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a check valve with safeties, including valve body 1, the upside wall fixedly connected with valve gap 2 of valve body 1, the downside wall fixedly connected with action post 3 of valve gap 2, action groove 4 has been seted up to the inside wall face of action post 3, the inside wall sliding connection of action groove 4 has valve clack main part 5, inside wall fixedly connected with fixed plate 6 in the right-hand member of

valve body

1, 6 outside wall fixedly connected with supporting seat 7 of fixed plate, the inside wall sliding connection of supporting seat 7 has safeties 8, this check valve is when using, as shown in figure 1, the fluid flows into the check valve from 1 left side of valve body, the fluid upwards promotes valve clack main part 5, make valve clack main part 5 upwards slide at the inside wall face of action groove 4, promote vice valve clack 83 to the right side, the fluid passes through-hole 61 through 1.

Specifically, the safety device 8 includes a movable rod 81, a tray 82 is fixedly connected to a right side wall surface of the movable rod 81, a sub-valve flap 83 is fixedly connected to a left end of the movable rod 81, a left end of the sub-valve flap 83 is engaged with an inner side wall surface of the safety vent 84, and when a reverse flow phenomenon occurs at a position where fluid flows out from the right side, the fluid flows through the through hole 61 and impacts the right side wall surface of the sub-valve flap 83.

Specifically, a slider 85 is fixedly connected to an outer side wall surface of the sub valve flap 83, the sub valve flap 83 is fixedly connected to the fixed plate 6 by a spring 86, the sub valve flap 83 is moved leftward by the combined action of the spring 86 and the fluid, and the slider 85 slides leftward on an inner side wall surface of the support base 7, so that the sub valve flap 83 is engaged with the inner side wall surface of the safety vent 84.

Specifically, the bonnet 2 and the valve body 1 are fixedly connected by a pin 9, and the device is kept in good airtightness by the fixation of the pin 9.

Specifically, a through hole 61 is opened in the inner wall surface of the fixed plate 6, and the fluid flows through the through hole 61.

The working principle is as follows: when the check valve is used, as shown in fig. 1, fluid flows into the check valve from the left side of the valve body 1, the fluid pushes the valve clack main body 5 upwards, so that the valve clack main body 5 slides upwards on the inner side wall surface of the action groove 4, the auxiliary valve clack 83 is pushed towards the right side, and the fluid flows out through the through hole 61 through the inner side wall surface of the right side valve body 1;

when the fluid flows out from the right side and the reverse flow phenomenon occurs, the fluid flows through the through hole 61 to impact the right side wall surface of the auxiliary valve clack 83, under the combined action of the spring 86 and the fluid, the auxiliary valve clack 83 moves leftwards, the slide block 85 slides leftwards on the inner side wall surface of the supporting seat 7, the auxiliary valve clack 83 is clamped on the inner side wall surface of the safety opening 84, the interior of the valve body 1 is temporarily in a closed state, when the left end is not supplied with the fluid any more, the right end is in the closed state, the pressure of the upper end and the lower end of the valve clack main body 5 changes, the valve clack main body 5 slides downwards under the pushing of the pressure, and the valve clack main body 5.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a check valve with safeties, includes valve body (1), the upside wall fixedly connected with valve gap (2) of valve body (1), its characterized in that: the valve is characterized in that a lower side wall face of the valve cover (2) is fixedly connected with a moving column (3), a moving groove (4) is formed in the inner side wall face of the moving column (3), the inner side wall face of the moving groove (4) is slidably connected with a valve clack body (5), a right end inner side wall face of the valve body (1) is fixedly connected with a fixing plate (6), a fixing plate (6) is fixedly connected with a supporting seat (7) in the outer side wall face of the fixing plate (6), and a safety device (8) is slidably connected with the inner side wall.

2. The check valve with safety feature of claim 1, wherein: safety device (8) include movable rod (81), the right side wall fixedly connected with tray (82) of movable rod (81), the left end fixedly connected with vice valve clack (83) of movable rod (81), vice valve clack (83) left end joint is in the inside wall face of safety mouthful (84).

3. The check valve with safety feature of claim 2, wherein: the outer side wall surface of the auxiliary valve clack (83) is fixedly connected with a sliding block (85), and the auxiliary valve clack (83) is fixedly connected with the fixed plate (6) through a spring (86).

4. The check valve with safety feature of claim 1, wherein: the valve cover (2) is fixedly connected with the valve body (1) through a pin shaft (9).

5. The check valve with safety feature of claim 1, wherein: the inner side wall surface of the fixing plate (6) is provided with a through hole (61).