CN207514339U - A kind of Manual press shut-off valve - Google Patents

Abstract

The utility model is related to a kind of Manual press shut-off valves, valve body (3) bottom end is threadedly coupled bottom cover (7), valve stem passage (18) is equipped in the valve body, gas outlet (19), outlet oral chamber (15), air inlet (20) and gas inlet chamber (16), valve rod (8) is housed in the valve stem passage (18), the valve rod connection spool (4), the spool (4) is tightly connected inner chamber body (17) wall of valve body (3) and bottom cover (7) by spool O-ring (11), the top of the valve body (3) passes through outside framework oil seal (9), valve rod O-ring (10) is tightly connected with valve rod (8), the valve stem tip is fixedly connected with button (1), valve rod (8) between button and outside framework oil seal (9) is equipped with spring (2)；The utility model is simple in structure, at low cost, powerful, and sealing is solid and reliable, and maintenance period is long, and maintenance cost is low, can automatically reset, and carelessness present in prevention work causes safety accident.

Description

A kind of Manual press shut-off valve

[technical field]

The utility model is related to valve types to bypass gauge valve technical field, is conveyed more particularly to natural gas and industrial gasses Emergency safety stop valve valve arrangement in the process, it balances pressure before and after cutting-off valve as by-passing valve；Specifically one Kind Manual press shut-off valve.

[background technology]

With the raising of industrial equipment safety coefficient, emergency safety stop valve is widely used, now on the market extensively The emergency safety stop valve spread is all with by-passing valve, and by-passing valve is in the majority with ball valve, such ball valve is manual swing type, should There are many security risks for kind mode actual application kind.Such as：When quick action emergency valve is closed, by-passing valve is also switched off, Maintenance upstream device is carried out at this time, by-passing valve should be opened after fixing, quick action emergency valve is resetted, and by-passing valve should be closed after reset It closes, in this way convenient for when there is dangerous situation, quick action emergency valve cuts off the gas of pipeline.But in practical maintenance process, teacher is overhauled Fu can often forget about closing by-passing valve, and when swimming out of existing dangerous situation instantly, the medium of upstream can still be leaked by bypass Safety accident is caused in downstream to upstream device.

[utility model content]

The purpose of this utility model seeks to solve above-mentioned deficiency and provide a kind of Manual press shut-off valve, not only may be used To automatically reset, and sealing is tight, performance safety is reliable, maintenance cost is low.

To realize a kind of above-mentioned Manual press shut-off valve of design, including button 1, valve body 3, spool 4, bottom cover 7 and valve Bar 8,3 bottom end of valve body are threadedly coupled bottom cover 7, and junction is equipped with bottom cover O-ring 13, is equipped with and is connected in the valve body 3 Valve stem passage 18, gas outlet 19, outlet oral chamber 15, air inlet 20 and gas inlet chamber 16, the valve stem passage 18 is built-in There is valve rod 8, the valve rod 8 is fastenedly connected spool 4 by hex nut 6, and the spool 4 is tightly connected by spool O-ring 11 17 wall of inner chamber body of valve body 3 and bottom cover 7, the top of the valve body 3 is sealed by outside framework oil seal 9, valve rod O-ring 10 and valve rod 8 Connection, 8 top of valve rod are fixedly connected with button 1, and the valve rod 8 between button 1 and outside framework oil seal 9 is equipped with spring 2；When Valve is closed down, the part spool 4 in gas inlet chamber 16, horizontal close to the upper surface of outlet oral chamber 15 longitudinal direction Section is more than lower end longitudinal cross-section.

The gas outlet 19 of the valve body 3 connects outlet ferrule fitting 14, and air inlet 20 connects air inlet ferrule fitting 5.

The inner chamber body 17 of the bottom cover 7 is connected with air.

When valve is closed down, the longitudinal cross-section of the part spool 4 in gas inlet chamber 16 is T shapes, on The big lower end in end face small taper or up-side down triangle.

The utility model compared with the existing technology, has the following advantages that：

1st, it can be automatically reset by spring, without being resetted manually, can effectively prevent in work and exist Carelessness, and cause safety accident.

2nd, medium has clamping force to seal spool, it is ensured that sealed reliable realizes zero leakage.

3rd, simple in structure, extremely low maintenance cost is low, and the product maintenance period is long；Dismounting is easy, and maintenance and repair parts is few.

4th, the fields such as combustion gas, industrial gasses can be widely used in, products application range is wide.

[description of the drawings]

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the embodiment schematic diagram of the utility model；

In figure, 1, button, 2, spring, 3, valve body, 4, spool, 5, air inlet ferrule fitting, 6, hex nut, 7, bottom cover, 8, Valve rod, 9, valve rod O-ring, 10, outside framework oil seal, 11, spool O-ring, 12, gasket, 13, bottom cover O-ring, 14, outlet cutting ferrule connects Head, 15, outlet oral chamber, 16, gas inlet chamber, 17, inner chamber body, 18, valve stem passage, 19, gas outlet, 20, air inlet.

[specific embodiment]

The utility model is made below in conjunction with the accompanying drawings further explained below：

As shown in drawings, the utility model includes：Valve body 3, spool 4, valve rod 8, bottom cover 7 are that detachable connection is one Body, 3 bottom end of valve body are threadedly coupled bottom cover 7, and junction is sealed equipped with bottom cover O-ring 13, is equipped in the valve body 3 Valve stem passage 18, gas outlet 19, outlet oral chamber 15, air inlet 20 and the gas inlet chamber 16 being connected, the valve stem passage Spool 4 is fastenedly connected by hex nut 6 equipped with valve rod 8, the valve rod 8 in 18, the spool 4 is close by spool O-ring 11 17 wall of inner chamber body of envelope connection valve body 3 and bottom cover 7, the inner chamber body 17 of the bottom cover 7 be connected with air, its purpose is that allowing valve Core 4 can smoothly slide up and down in inner chamber body 17.The top of the valve body 3 passes through outside framework oil seal 9, valve rod O-ring 10 and valve Bar 8 is tightly connected, and 8 top of valve rod is fixedly connected with button 1, and the valve rod 8 between button 1 and outside framework oil seal 9 is equipped with Spring 2；When valve is closed down, the part spool 4 in gas inlet chamber 16, close to the upper end of outlet oral chamber 15 Face longitudinal cross-section is more than lower end longitudinal cross-section.The pressure medium of air inlet can be pressed in spool 4 by this 4 structure of spool On, make sealing relatively reliable, secured.As shown in the figure, 4 longitudinal cross-section of spool is T-shaped structure.It may be the big lower end in upper surface The structures such as small taper or up-side down triangle.The gas outlet 19 of the valve body 3 connects outlet ferrule fitting 14, and air inlet 20 connects Air inlet ferrule fitting 5.

As shown in Figure 2, in figure, Pi is inlet pressure, and Po is outlet pressure, and F is Manual press pressure.Its operation principle For：Normal condition is the state that spring is in pretightning force, spool and valve seal, after pressure medium Pi is passed through from air inlet, Valve is still within closed state, and since the pressure medium of air inlet is pressed on spool, makes sealing relatively reliable.Work as needs When opening valve, F force directions pressing button opens valve.When needing to close valve, spring bullet can be passed through by unclamping hand Power resets, sealed valve.

The utility model can be realized when implementing：1st, valve seal is reliable, realizes zero leakage.2nd, spring can be passed through It automatically resets, without being resetted manually, can effectively prevent and neglect present in work, and cause safety accident. 3rd, simple in structure, extremely low maintenance cost is low, and the product maintenance period is long；Dismounting is easy, and maintenance and repair parts is few.4th, it can be widely used In fields such as combustion gas, industrial gasses, products application range is wide.

The utility model is simultaneously not limited to the embodiments described above, and other any spirit without departing from the utility model are real Matter with made under principle change, modification, replacement, combine, simplification, should be equivalent substitute mode, be included in this practicality Within novel protection domain.

Claims (4)

1. a kind of Manual press shut-off valve, it is characterised in that：Including button (1), valve body (3), spool (4), bottom cover (7) and valve Bar (8), valve body (3) bottom end are threadedly coupled bottom cover (7), and junction is equipped with bottom cover O-ring (13), and the valve body (3) is interior Equipped with valve stem passage (18), gas outlet (19), outlet oral chamber (15), air inlet (20) and the gas inlet chamber being connected (16), spool (4) is fastenedly connected by hex nut (6) equipped with valve rod (8), the valve rod (8) in the valve stem passage (18), The spool (4) is tightly connected inner chamber body (17) wall of valve body (3) and bottom cover (7), the valve body by spool O-ring (11) (3) top is tightly connected by outside framework oil seal (9), valve rod O-ring (10) and valve rod (8), and valve rod (8) top, which is fixed, to be connected Button (1) is connect, the valve rod (8) between button (1) and outside framework oil seal (9) is equipped with spring (2)；When valve is closed Under, the part spool (4) in gas inlet chamber (16), the upper surface longitudinal cross-section close to outlet oral chamber (15) is more than Lower end longitudinal cross-section.

2. push type shut-off valve according to claim 1, it is characterised in that：Gas outlet (19) connection of the valve body (3) Outlet ferrule fitting (14), air inlet (20) connection air inlet ferrule fitting (5).

3. push type shut-off valve according to claim 1, it is characterised in that：The inner chamber body (17) of the bottom cover (7) with it is big Gas phase connects.

4. push type shut-off valve according to claim 1, it is characterised in that：When valve is closed down, positioned at air inlet The taper or up-side down triangle that the longitudinal cross-section of part spool (4) in oral chamber (16) is T shapes, the big lower end in upper surface is small.