RU182505U1 - Pneumatic direct-flow valve - Google Patents

Abstract

The invention relates to pipeline valves and is intended for use in pneumatic systems of vehicles as a shut-off, shut-off and regulating air flow and pressure.

The direct-flow pneumatic valve contains: a body with an internal cavity and with a cylindrical valve installed in it with a piston fixed to it, dividing the internal cavity into two chambers; a spring tightening the cylindrical valve in the direction of its closing; a cover with a hole and with peripheral holes for threaded connections; a saddle fixed in the cap with holes on its periphery for gas flow and a sealing ring interacting with the cylindrical valve in the closed position; the inlet and outlet flanges attached to the direct-flow valve with nozzles for the pneumatic pipe, the case is made in the form of a sleeve, the cover with a saddle fixed in it has a protrusion, the outer diameter of which is equal to the inner diameter of the sleeve with a groove and a sealing ring in it; on the opposite side, a second cap is attached to the sleeve with a protrusion, the outer diameter of which is equal to the inner diameter of the sleeve, with a groove and a sealing ring on it, with a central hole, the diameter of which is equal to the outer diameter of the cylindrical valve, with grooves with sealing rings in the cover in the region of the central hole , with peripheral holes for threaded connections in the second cover; threaded connections made in the form of studs installed in peripheral holes in covers and flanges with nuts at the ends of the studs.

Achieved simplification of the design and increase the manufacturability of the valve. 4 of FIG.

Description

The invention relates to pipeline valves and is intended for use in pneumatic systems of vehicles as a shut-off, shut-off and regulating air flow and pressure.

A device for a pulsed gas supply (a.s. SU No. 718639 of 05.26.1975), comprising a cylindrical housing with a transverse partition dividing the internal cavity of the housing into the inlet and outlet chambers, each with bypass windows in the wall of the housing; a cylindrical casing with a cover and a cylindrical chamber in which an annular plunger is installed, between the ends of which and the end of the cylindrical chamber control cavities are formed. This device is not direct-flow, its drawback is the complexity of the design and increased resistance to gas flow through the windows.

Known high-speed valve (AS SU No. 188248 from 08/14/1965), comprising a housing with a Central hole for the release of air and an inlet for air supply and placed in it a plunger, spring-loaded, consisting of three parts: a guide part with a ring contact the surface of the protrusion entering the Central hole for the release of air; a hole in the housing for supplying a control pulse under the disk.

The disadvantage of this valve is the impossibility of regulating the pressure of the air discharged through the valve and the automatic closing of the valve after a pressure drop, for example, to atmospheric pressure. In addition, the valve is not direct-flow and is characterized by increased pressure losses of the air flowing through it.

Known angular quick exhaust valve (operation manual ДУВК.665212.002РЭ), consisting of a cylindrical body with a bottom and a baffle with integrated covers and a seat, with a piston with a rod with a disk-shaped valve attached to it, interacting with the seat, and two flanges with supply nozzles and air vent.

The disadvantage of this valve is the complexity of its design and manufacturing technology, as well as the pressure pulsation in the pneumatic network caused by the pulse opening and closing of the disk-shaped valve, due to the action of a significant unbalanced axial force from the air pressure.

A direct-flow valve is known for serving to open and close pipelines (patent RU No. 2106557 dated 11/12/1996), comprising a body with a straight-through flow part having an inlet and an outlet and a saddle; a central body with a cylindrical working chamber installed in the flowing part on the pylons; a piston with a shut-off valve placed in the working chamber; channels for supplying air under pressure to open and close the valve.

Known gas pressure regulator (patents RU №2125737 from 01/14/1997 and RU №2127897 from 08/13/1996), comprising a housing with a lockable hole and coaxial inlet and outlet pipes; co-located with the nozzles of the piston ring valve actuator; a seat in the housing at the outlet pipe, supply channels to the piston of the set and control pressure.

A direct-flow gas pressure regulator is known (patent for PM RU No. 161485 dated 01/11/2016 and PM RU No. 148399 dated 08/05/2014), including a control valve having a housing with coaxial air inlet and outlet channels and a cover; flanges connected to the body with pipe lugs; a cylindrical valve with a central channel and a piston pressed by a spring; two piston cavities in the housing - a control cavity and a feedback cavity; a valve seat with holes on its periphery and with an axisymmetric seal installed in it; a sealing lip at the end of the cylindrical valve facing the seat.

A disadvantage of the known direct-flow valves and pressure control valves is the complexity of their design and manufacturing technology.

Known pneumatic direct-flow valve (patent for PM RU No. 73744 dated 12/19/2007, prototype), which is part of the pressure regulator, consisting of: a body with an internal cavity and with a cylindrical valve installed in it with a piston fixed to it, dividing the internal cavity into two cameras spring, pressing the cylindrical valve in the direction of its closing; lids with a hole having an inner diameter equal to the outer diameter of the cylindrical valve, and with peripheral holes of threaded connections; fixed in the seat cover with holes on its periphery for gas flow, with a sealing ring installed in it, interacting with the cylindrical valve in the closed position; connected to the in-line valve of the inlet and outlet flanges with nozzles for the pneumatic pipe, each with a central hole, the diameter of which is not less than the internal diameter of the cylindrical valve and with peripheral holes for threaded connections.

The disadvantage of this direct-flow valve is the complexity of its design and its manufacturing technology.

The technical problem solved by the utility model is to simplify the design and manufacturing technology of a pneumatic direct-flow valve.

The technical problem is solved in a pneumatic direct-flow valve, comprising: a housing with an internal cavity and a cylindrical valve installed in it with a piston fixed to it, dividing the internal cavity into two chambers; a spring tightening the cylindrical valve in the direction of its closing; a cover with an opening having an inner diameter equal to the outer diameter of the cylindrical valve, and with peripheral holes of threaded connections; a saddle fixed in the cap with holes on its periphery for gas flow, with a sealing ring installed in it, interacting with the cylindrical valve in the closed position; the inlet and outlet flanges connected to the direct-flow valve with nozzles, each with a central hole and with peripheral holes for threaded connections, the housing is made in the form of a sleeve with an inner diameter corresponding to the outer diameter of the piston, the cover with a saddle fixed in it has a protrusion with a groove and a sealing ring in it, the outer diameter of which is equal to the inner diameter of the sleeve; on the opposite side, a second cap is attached to the sleeve with a protrusion, the outer diameter of which is equal to the inner diameter of the sleeve, with a groove and a sealing ring on it, with a central hole, the diameter of which is equal to the outer diameter of the cylindrical valve, with grooves with sealing rings in the cover in the region of the central hole , with peripheral holes for threaded connections located coaxially with holes in the cover with a saddle and in the flanges; threaded connections are made in the form of studs installed in coaxial peripheral holes in the covers and flanges with nuts at the ends of the studs.

To reduce the resistance to air flow through the annular space between the ends of the cylindrical valve and the seat, the maximum piston stroke exceeds half the radius of the central channel of the cylindrical valve.

The technical problem is to simplify the design and manufacturing technology of the valve, solved by a combination of the following distinctive features: the housing is made in the form of a sleeve with an inner diameter corresponding to the outer diameter of the piston, the cover with a saddle fixed in it has a protrusion with a groove and a sealing ring in it, the outer whose diameter is equal to the inner diameter of the sleeve; on the opposite side, a second cap is attached to the sleeve with a protrusion, the outer diameter of which is equal to the inner diameter of the sleeve, with a groove and a sealing ring on it, with a central hole, the diameter of which is equal to the outer diameter of the cylindrical valve, with grooves with sealing rings in the cover in the region of the central hole , with peripheral holes for threaded connections located coaxially with holes in the cover with a saddle and in the flanges; threaded connections are made in the form of studs installed in coaxial peripheral holes in the covers and flanges with nuts at the ends of the studs.

This set of distinctive features was not found during the patent information search, therefore, the utility model meets the criterion of "novelty."

In FIG. 1 shows a longitudinal section of a pneumatic ram valve with a mechanical seal in the closed state.

In FIG. 2 shows a longitudinal section of a pneumatic ram valve with a mechanical seal in the open state.

In FIG. Figure 3 shows a longitudinal section of a pneumatic ram valve with an O-ring in the seat when the valve is closed.

In FIG. 4 shows a pneumatic direct-flow valve with a body in the form of a polyhedron.

Pneumatic direct-flow valve (Fig. 1-4) contains: body 1 in the form of a sleeve 2 (cylindrical sleeve 2a, Fig. 1-3, or polyhedral sleeve 2b, Fig. 4); a cylindrical valve 3 with a piston 4 fixed on it, the outer diameter of which corresponds to the inner diameter of the sleeve 2, dividing the inner cavity 5 into the right control chamber 6 and the left control chamber 7, connected by channels 8 a and 8b in the covers 10 and 20, respectively, and with the valves ( not shown) pneumatic control system (not shown); a spring 9, compressing the cylindrical valve 3 in the direction of its closing; a cover 10 with an opening 11 having an inner diameter equal to the outer diameter of the cylindrical valve 3, and with peripheral holes 12 (Figs. 1, 3) for connecting 13 of the cover 10 to the housing 1 having a protrusion 14, the outer diameter of which is equal to the inner diameter of the sleeve 2 with a groove 15 and a sealing ring 16 in the protrusion 14; a saddle 17 fixed in the cover 10 with holes 18 on its periphery for gas flow, with a sealing ring 19 installed in it (Figs. 1-3), interacting with a cylindrical valve 3 in the closed position (Figs. 1, 3); connected from the opposite side to the sleeve 2a, the second cover 20 with the protrusion 21, the outer diameter of which is equal to the inner diameter of the sleeve 2, with a groove 22 and a sealing ring 23 on it, with a Central hole 24, the diameter of which is equal to the outer diameter of the cylindrical valve 3, with grooves 25 with o-rings 26 and 27 in the cover 20 in the region of the central hole 24, with peripheral holes 28 for threaded connections 13 located coaxially with the holes 12 in the cover 10; the inlet flange 29 and the outlet flange 30 connected to the direct-flow valve, respectively, with an inlet pipe 31 and an outlet pipe 32 for a pneumatic pipe (not shown), each with a Central hole 33 and 34, the diameter of which is not less than the diameter of the inner hole 35 of the cylindrical valve 3 and with peripheral holes 36 a and 36 b for threaded connections made in the form of studs 13 mounted in coaxially arranged peripheral holes 12, 28, 36 a and 36 b with nuts 13 a at the ends of the studs 13.

In the initial state (Fig. 1, 3), the direct-flow valve is closed; when air is supplied under pressure to the right control chamber 6 (Fig. 1), the cylindrical valve 3, overcoming the force of the spring 9 and the pressure of the air displaced from the left control chamber 7, moves to the left, forming an annular gap 37 (Fig. 2) between the ends of the valve 3 and saddles 17; air through the annular gap 37 and the holes 18 on the periphery of the seat 17 enters through the outlet pipe 32 to the consumer. By supplying air to the right control chamber 6 or by venting air from it, the size of the annular gap 37 and the pressure drop between the inlet pipe 31 and the outlet pipe 32 are controlled.

To accelerate the closure of the cylindrical valve 3, it is possible to supply air to the left chamber 7 when air is exhausted from the right chamber 6.

To reduce the resistance to air flow through the annular gap 37 between the ends of the cylindrical valve 3 and the seat 17, the maximum stroke h _{max of the} piston 4 exceeds half the radius g of the inner surface of the cylindrical valve 3 (Fig. 2): h _max > r / 2.

The design of the pneumatic direct-flow valve (Fig. 1-4) is simpler than the known designs of the direct-flow valves, since instead of a case of complex design it uses a sleeve 2 made of a pipe (for example, from a blank of a pneumatic cylinder [http://books.camozzi.com/8.5 RU /]) with an internal calibrated hole, and covers 10 and 20 with protrusions 14 and 21, the outer diameter of which corresponds to the inner diameter of the sleeve 2 a or 2b to ensure alignment of the sleeve 2 a or 2b and the covers 10 and 20, as well as the stud 13 ( at least four) tightening the sleeve 2 a (Fig. 1-3) or 2b (Fig. 4), covers 10 and 20 and flanges 29 and 30 with a force exceeding the force created by the air pressure on the protrusions 14 and 21 of the covers 10 and 20 (condition for non-disclosure of joints).

This design allows you to simplify the manufacturing technology of pneumatic ram valve, reduce the complexity of its manufacture and cost.

Claims (2)

1. Pneumatic direct-flow valve, consisting of a housing with an internal cavity and with a cylindrical valve installed in it with a piston fixed to it, dividing the internal cavity into two chambers; spring, pressing the cylindrical valve in the direction of its closing; lids with a hole having an inner diameter equal to the outer diameter of the cylindrical valve, and with peripheral holes for threaded connections; fixed in the seat cover with holes on its periphery for gas flow, with a sealing ring installed in it, interacting with the cylindrical valve in the closed position; connected to the in-line valve of the inlet and outlet flanges with nozzles, each with a central hole and with peripheral holes for threaded connections, characterized in that the housing is made in the form of a sleeve with an inner diameter corresponding to the outer diameter of the piston, the cover with a saddle fixed to it has a protrusion with a groove and a sealing ring, the outer diameter of which is equal to the inner diameter of the sleeve; on the opposite side, a second cap is attached to the sleeve with a protrusion, the outer diameter of which is equal to the inner diameter of the sleeve, with a groove and a sealing ring on it, with a central hole, the diameter of which is equal to the outer diameter of the cylindrical valve, with grooves with sealing rings in the cover in the region of the central hole , with peripheral holes for threaded connections located coaxially with holes in the cover with a saddle and in the flanges; threaded connections are made in the form of studs installed in coaxial peripheral holes in the covers and flanges with nuts at the ends of the studs. 2. Pneumatic direct-flow valve according to claim 1, characterized in that the maximum piston stroke exceeds half the radius of the central channel of the cylindrical valve.

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