SU424999A1 - MULTI-GOLDEN SECTIONAL DISTRIBUTIONS Ptb ^ (^ • It- ^ O ^ - ^^ hT ^ -YZ! FshD ^^. V.ui- -1- * - Google Patents

Description

one

Miyozolotikovye sectional distributors are known, containing a pressure, drain and working sections, in the bores of the body of each of which a non-return valve with a replaceable socket and a controlled three-way cylindrical slide valve are located.

However, to ensure that the working bodies controlled by them can work according to the required scheme by replacing replacement parts, it is necessary to disassemble the entire distributor to replace parts in the working section, which makes their operation difficult.

The proposed valve works according to the required scheme without disassembly by replacing the check valve seat in any of the working sections.

FIG. 1 shows the proposed distributor, section; in fig. 2 shows the pressure section, section A-A in FIG. one; in fig. 3 and FIG. 4 - working sections, sections according to BB and BB.

The distributor contains working sections 1 located between the pressure 2 and the discharge 3 sections. In the pressure section (see Fig. 2) there are openings a and b for supplying and discharging the working fluid, flow and dead-end channels c and d through which fluid is supplied to the working m sections, and a safety valve 4. Each working section contains (Fig. 3 and 4) a controlled spool 5 installed in its bore, which communicates with working leads 7 and 8 through the grooves and the check valve b.

In addition, each working section contains flow through and dead-end g channels passing through all working sections and drain channel D. The flow channel in working sections is made in a cavity with three annular grooves. The supply of working fluid to it is carried out through the middle annular groove, and its output to the subsequent section of the two extreme. Depending on the connection scheme of the working parts of the machine, the sub valve area of the check valve 6 is connected to the corresponding channel (dead end or middle annular groove of the flow channel) using an interchangeable socket 9 installed in the pressure section of the working section.

When connecting the working parts of the machine according to an individual scheme (see Fig. 3), the subclanted cavity of the working section check valve is connected to the middle annular flow point of the flow channel with an interchangeable socket 9, made in the form of a sleeve with a hole on the end surface, and disconnected from the dead end channel .

When connecting the working parts of the machine according to a parallel scheme, the subvalvular cavity of the check valve of the working section of the distributor is combined with a dead end

A channel with an interchangeable socket 9 (see Fig. 4), made in the form of a sleeve with openings on the side surface, and is disconnected from the flow channel.

In the drain section there is a channel w (see Fig. 1), which combines the drain channels (3 and e and the flow channel in going from the working sections.

Works sectional multipath distributor as follows.

At the neutral position of all spools 5 of the distributor, the working fluid from the pump is fed into the hole and the pressure section 2 (see Fig. 2), and then through the flow channel into the dead end channel g (see Fig. 3, 4) enters the working sections of the distributor . Through the flow channel into the working fluid through the drain section 3 through the drain channels of the working sections and then into the channels through the opening b of the pressure section 2 enters the drain, the system is unloaded.

When the working parts of the machine work according to an individual scheme, the working fluid flows from the middle annular groove of the flow channel to the subvalvular cavity of the check valve 6 of the working section of the distributor, which is achieved with the help of a replaceable socket 9, made in the form of a sleeve with a hole in face surface.

When several spools 5 are displaced to the extreme position, the working fluid nostums under the non-return valve only the first displacement spool, which is the first working fluid, since the others are cut off by the edges of the spool. In the channels of all other working sections, located behind the first spool, the working fluid does not flow.

In the working section, the liquid from the middle annular groove of the flow channel penetrates the mixing nest under the non-return valve, opens it and drops the pressure section of the section through the slot formed by the edges of the spool and body, enters the corresponding working outlet, and the other outlet connects another bore of the spool of the same section with a drain channel.

When the working parts of the machine work in parallel, the subvalvate cavity of the return clan 6 of the working section of the distributor (see Fig. 4) is connected to a dead end channel and insulated from the middle annular groove of the flow channel by a replaceable socket 9 made in the form of a sleeve with holes on the lateral surface.

At the extreme position of the spool 5, the working fluid from the stub channel d through the check valve 6 through the channel of the pressure section of the section and through the slot formed by the edges of the spool and the body enters the corresponding working branch, and the other branch is connected through the slot of the spool of the same section to the drain channel .

When simultaneously turning on several spools of working sections made according to a parallel circuit, simultaneous control of several machine operating units is ensured, i.e., parallel operation of these executive bodies is ensured.

Subject invention

Claims (3)

1. Multi-section sectional distributor, containing a pressure, drain and working sections, in the bores of the casing of each of which a non-return valve with a replaceable nest is located, controlled by a three-way valve cylindrical spool, butt in the case with three annular grooves, middle and two extreme, dead-end, flow-through, drain channels and working taps, which is also distinguished by the fact that, in order to expand operational capabilities by ensuring the work of individual, parallel and mixed circuits, the pressure cavity of the pressure section is connected to a common dead end channel of the working sections and to the middle annular groove of the neighbors of the working section, the extreme annular grooves of each of the preceding The previous working sections are connected to the secondary annular groove, the flow channel, and the spool is equipped with grooves for connecting the working taps through a check valve and corresponding openings in its replaceable socket to the middle annular groove or to the dead-end channel providing the required connection circuit of controlled working bodies. 2. The distributor according to claim 1, is distinguished by the fact that, in order to ensure the connection of the working parts of the machine to the individual circuit, the back clan socket is made in the form of a sleeve with a hole on the end surface for connecting the valve valve sub valve valve to the middle annular groove of the flow channel and disconnecting from her tunic channel. 3. The distributor according to claim 1, characterized in that, in order to ensure the connection of the working parts of the machine according to a parallel circuit, the check valve seat is made in the form of a sleeve with openings on the side surface for connecting the valve valve cavity to the dead end channel and disconnecting it from middle annular groove flow channel. / .Г / Rig