CN2460817Y - Combined controllable check valve - Google Patents

Abstract

The utility model discloses a combined controllable check valve, composed of a valve body, a flexible fulcrum, a fulcrum, a valve seat, a valve core, a valve rod, a lever, an upper and a lower machine elements, and a tubular slideway. The combined controllable check valve uses the principle of interaction among the movable valve core which is arranged on the flexible fulcrum through a pin shaft, the movable level which is arranged on the fulcrum, and the valve rod which is controlled by the lower end of the lever to move horizontally, so that the alternation of liquid storage and liquid supply for a container can be realized, and the liquid level in the container can be controlled.

Description

The combined type controllable check valve

The utility model relates to a kind of combined type controllable check valve in the pipe-line for conveying liquids, is specially adapted to automatic control of liquid level in the container.

People realize that automatic control of liquid level has adopted various ways in the container at present, float valve promptly is wherein a kind of, and this float valve can only be closed feed pathway, but can not emit liquid through float valve, make controlled device process pipe complexity like this, the equipment installation cost increases.

The purpose of this utility model is to avoid the deficiency in the above-mentioned background technology and a kind of combined type controllable check valve that can be used for liquid level control in container liquid storage, feed flow process and the container is provided, and the utility model also to have a processing and fabricating simple, with low cost, characteristics such as long service life.

The purpose of this utility model is achieved in that it is by valve body 1, spool 2, flexible point 3, valve seat 4, valve rod 5, fulcrum 6, parts 7, lever 8, tubulose slideway 9 are formed up and down.Its valve body 1, flexible point 3, valve seat 4, fulcrum 6, tubulose slideway 9 casting and through being processed into an overall structure, flexible point 3 is in valve body 1 valve pipe, valve seat 4 is at the valve body 1 valve mouth of pipe, tubulose slideway 9 in the center of circle of its center of circle, right side of valve body 1 valve pipe and valve seat on same axis, fulcrum 6 is in the upper left side of tubulose slideway 9, spool 2 upper ends are installed on the flexible point 3 also movable with bearing pin, the valve plate of spool 2 is installed in the valve seat valve port in the valve body 1, valve rod 5 middle parts process a rectangular hole 10 and are loaded in the tubulose slideway 9 and can horizontally slip, the rectangular hole 10 interior lever 8 usefulness bearing pins that insert on the valve rod 5 lower end of lever 8 are installed in the rotation that can do several angle on the fulcrum 6, and parts 7 are installed down in lever 8 upper ends.

The utility model is compared background technique following advantage:

1. the utility model has been made spool 2, flexible point 3, valve seat 4, valve rod 5, fulcrum 6, lever 8, tubulose slideway 9 parts, makes liquid level control, the hocketing of feed flow liquid storage of container reach controlled purpose.

2. this reality is made novel all parts and is adopted brass or stainless steel material making, and long service life reduces maintenance load and maintenance expenses.

3. the utility model processing is manufactured simply, and with low cost, fitting operation is simple and easy.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a mounting structure schematic representation of the present utility model.

With reference to Fig. 1, the utility model is by valve body 1, spool 2, flexible point 3, valve seat 4, valve rod 5, fulcrum 6, parts 7, lever 8, tubulose slideway 9 are formed up and down.Flexible point 3, valve seat 4, fulcrum 6, tubulose slideway 9 and valve body 1 ' a be cast as overall structure wherein.Flexible point 3 is in valve body 1 valve pipe, and its effect is the moving fulcrum of opening or closing as spool 2.Valve seat 4 is at the valve body 1 valve mouth of pipe, and its effect is to open or the cut-off valve doorway as spool 2.Tubulose slideway 9 in its center of circle, the right side of valve body 1 and valve seat 4 centers of circle on same axis.Fulcrum 6 is in the upper left side of tubulose slideway 9.The real novel spool of this practicality 2 upper ends are installed on the flexible point 3 with bearing pin, and the valve plate of spool 2 is corresponding with valve seat 4, just in time valve seat 4 can be covered completely when spool 2 lower ends move to left, and embodiment adopts brass material to be processed into the plectane structure.The utility model valve rod 5 usefulness Φ 5mm bars process, and its middle part has one 3mm * 8mm rectangular hole 10, and valve rod 5 is installed in the tubulose slideway 9.Lever 8 usefulness Φ 3mm bars process, and insert in the rectangular hole 10 its lower end, by bearing pin lever 8 is installed on the fulcrum 6 then, and parts 7 are installed down in the upper end of lever 8.Parts 7 embodiments adopt float to make up and down, by the buoyancy of float and self gravitation make lever 8 around fulcrum 6 do limited suitable, be rotated counterclockwise.Valve body 1 can be made into different specification size, and its left end process interior or outside thread or flange to satisfy requirements of different users.

The utility model working principle is as follows: the combined type controllable check valve is installed on the bottom sides of controlled container, and the left end of valve body 1 connects by screw thread or flange confesses the liquid pipeline.When the left side of spool 2 pressure during less than the right side, even small pressure reduction, spool 2 will be opened, thereby the liquid in the controlled container can flow out smoothly, liquid level in the container drops to lower position gradually, and the float of parts 7 decline drive lever 8 turns clockwise around fulcrum 6 up and down, and the lower end of lever 8 moves to left, make valve rod 5 move to left simultaneously, the degree that valve rod 5 moves to left becomes positive relation-changing with the decline degree of the interior liquid level of container.When the left side of spool 2 pressure during greater than the right side, the lower end of spool 2 moves to right, the left side wall of rectangular hole 10 has been withstood in the lower end of the lever 8 after owing to move to left, so valve rod 5 can not move to right, the left end of valve rod 5 has withstood spool 2 and has played position-limiting action, make 4 of spool 2 and valve seats still leave certain clearance, the size in gap is relevant with liquid level in the container, high more its gap of liquid level is more little, this moment, liquid will flow to container by this gap, continuous rising along with liquid level in the container, the float of parts 7 also raises up and down, make lever 8 be rotated counterclockwise, lever 8 lower ends move to right, valve rod 5 moves to right and makes the gap of 4 of spool 2 and valve seats will diminish until being zero, the utility model further flows into container and makes that liquid level is under control in the container thereby blocked liquid, so can be realized that liquid in the container flows out and can realize that again liquid enters container and liquid level that can controlling liquid.Promptly can realize the liquid storage of container and hocketing and the interior liquid level of may command container of feed flow.

Claims (1)

1. combined type controllable check valve, it comprises valve body (1), parts (7) up and down, it is characterized in that it also comprises spool (2), flexible point (3), valve seat (4), valve rod (5), fulcrum (6), lever (8), tubulose slideway (9), rectangular hole (10), flexible point (3) wherein, valve seat (4), fulcrum (6), tubulose slideway (9) is cast as an overall structure with valve body (1), flexible point (3) is in valve body (1) valve pipe, valve seat (4) is at valve body (1) the valve mouth of pipe, tubulose slideway (9) is at valve body (1) valve pipe external right side, fulcrum (6) is in the upper left side of tubulose slideway (9), spool (2) upper end is installed on the flexible point (3) with bearing pin, the valve plate of spool (2) is in the left side of valve seat (4), valve rod (4) is gone up processing one rectangular hole (10), valve rod (4) is installed in the tubulose slideway (10), in the rectangular hole (10) on the lower end insertion valve rod (5) of lever (8), lever (8) is installed on the fulcrum (6) with bearing pin, and parts are installed down with fastening piece in lever (8) upper end.