SU740973A1 - Positive-displacement pump end-distributor - Google Patents

Description

(54) SIZE DISTRIBUTOR The invention relates to mechanical engineering and can be used in hydraulic actuators of various machines. Known end distributors of volumetric pumps, containing a manifold disk with several pressure channels separated by bridges, l & Periodically connected with sub-piston chambers of pump 1 J. A disadvantage of known distributors is an increase in the power loss due to the compression of fluid on the bridge. The invention of the invention is to reduce power loss. This circuit is achieved by the fact that in the proposed device, jumpers are provided with apertures provided with non-return valves for communicating the piston chambers with one of the discharge channels. In addition, the check valve is designed to be controlled by pressure in the adjacent discharge channel. VOLUME PUMP FIG. 1 shows the proposed distributor; view of the working end, in FIG. 2 is a section A-A of FIG. 1: in FIG. 3 embodiment of a check valve. The end distributor contains a cogelector disk 1 with a low pressure channel 2 and pressure channels 3 and 4, separated by bridges 5-7. On. A jumper 6 separating the injection channels 3 and 4 has an opening 8 with a non-return valve 9, which connects the piston chambers (not shown on the ifrypax) with the delivery channel 1M through the chamber 10 and the channel 11. A piston 13 is installed in the chamber 11 in the sleeve 12. Sub-piston chamber 14 is in communication with channel 15 with pressure channel 4. The pump with the described distributor can operate in three modes. When operating with a check valve shown in FIG. 2, in mode I, channels 3 and 4 communicate with channel 2 low

pressure or tank. The bore 8 is communicated via a check valve 9, a Yun chamber, a channel 11 with a discharge channel 3. The pump is idling. In D mode, channel 3 reports

with a feed user, and a channel, 4 with a low pressure channel 2 or tank.

When povgoenii pressure in the piston. The liquid is forced out of the chamber through the opening 8, the check valve 9, the chamber 1O and the channel 11 into the discharge channel 3 if the pressure in the sub-piston chamber exceeds the pressure in the discharge channel 3.

In W mode, channels 3 and 4 communicate with the consumer. At equal pressures in channels 3 and 4, the device operates as in mode 1, and at pressure in channel 3 it is more active than in channel 4, as in mode I At a distributor with reverse

The valve shown in FIG. 3, the work in the 1-Shch modes occurs in a similar way. In addition, it is possible to operate at a pressure in channel 4 greater than in channel 3, since when channel 4 and oisepCTHH 8 communicate, the working fluid under pressure passes through the supporting chamber from channel 4 through channel 15 into chamber 14 and acts on the piston 13 , bridges the hole 8, thus separating the channels 3 and 4.

The face distributor ensures the operation of two independent consumers without the cost of power for compressing the working fat during passage of the jumper between the injection channels.

Invention Formula

Claims (2)

1. The front distributor of a volumetric pump containing a collector disk with several divided jumpers by pressure channels intermittently connected to the priming chamber and nasov cameras, characterized in that, in order to reduce power losses, the jumpers are provided with check valves with holes for communication of piston chambers with one of pressure channels. 2. The distributor of claim 1, wherein the non-return valve is pressure controlled in the adjacent discharge channel. Sources of information taken into account in the examination 1. US patent No. 323,2056, cl. 6O53, 1966 ...