SU211248A1 - DEVICE FOR SWITCHING A FLOW OF A FLUID - Google Patents

Description

Devices for switching a flow of liquid, such as milk, are known, comprising a housing with nozzles for supplying and discharging a fluid, a spool mounted on a spring-loaded stem, a sealed chamber formed by an upper and lower lids with a diaphragm stirred inside it and with a fitting for controlling flow. its compressed gas membrane, and a manual actuator.

To facilitate maintenance of the device, as well as to increase the number of switches. The proposed device is equipped with an additional (second) nozzles for draining the liquid. This pipe is made in the form of a removable adapter nut connected to the housing and having a conical ring groove that serves as a spool seat. The latter is made removable, and its stem passes through the membrane and is brought out over the top cover of the chamber.

To simplify the assembly and disassembly of the device, as well as to facilitate sanitization, its stem should be made in the form of a one-piece rod with a washer at the lower end to rest the spool into it and provide with a spacer pressing the spool to the washer and simultaneously serving as a stop for the membrane, as well as a plate with a sleeve located above the membrane. On top

The end of the stem should be fitted with an adjusting nut, which allows the assembly, disassembly of the entire moving system of the device, as well as the tight connection of the parts of this system. In addition, the nut serves to visually determine the position of the spool.

To regulate the compression force of the stem spring and facilitate the disassembly of the chamber, it is advisable to install in the upper cover of the chamber

0 cup with a hole for the passage of the rod.

To facilitate installation of the device on liquid lines and to reduce hydraulic losses, the control gas fitting should be installed in the bottom cover

5 and the stem spring is above the diaphragm.

The drawing shows schematically the proposed device, a section.

It contains a housing / with connections for the supply and removal of fluid, pneumatic

0 drive, return mechanism, movable system and manual drive (in case of failure of the air supply system).

The housing has connections for supplying and discharging fluid and is equipped with a transition nut 2 — additional connections for drainage made with a conical groove, which is a seat, as well as a sealing ring 3 for sealing the connection of the housing 1 with a removable adapter nut.

there is a sealed chamber formed by the upper 4 and lower 5 lids, inside of which membrane 6 is located, which is a force V4. The system, 5/1b1.; .This reel 7, bolts 8, washers -1 9 and nuts M are used to connect the caps to the diaphragm 6; oil seal // and sealing nut 12.

The return mechanism consists of a spring 13, a cup 14 for adjusting the compressive force of this spring and the clamp 15.

The movable system comprises a rod 16 serving to secure all the elements of the movable system, a spool 17 with two seals 18; this spool is designed to overlap seats or body or a removable adapter nut; sleeve 19 spacer, which serves for the communication elements of the moving system; fungus 20, which serves to transfer movement from the membrane 6 to the moving system and to ensure tightness; washer 21 and nut 22 for assembling and disassembling the movable system; : guides 23 for steady movement of the rod 16.

The manual drive of the device consists of a stand and a handle (not shown).

The housing, the adapter nut, the upper and lower chamber lids, etc., can be made of polymeric materials.

The device works as follows.

If no compressed air is supplied under the diaphragm, then the liquid enters through the right inlet of the housing and flows through its left inlet. In this case, the lower seat in nut 2 is blocked by spool 17. In this state, the spool is held by spring 13. Compressed air with a pressure of 1-1.5 / sg / sZh2 through. The nozzle 24 installed in the bottom cover of the chamber enters the last and acts through the membrane on the plate 7, forcing it to move upwards, carrying the rod 16 with the spool 17 connected with it.

When moving upward, the valve opens the seat in a removable adapter nut 2 and closes the flow of fluid through the left pipe branch.

Thus, fluid flow can

be directed either upwards through the upper body nipple or downwards through the adapter nut.

Subject invention

Claims (4)

1. A device for switching a flow of liquid, such as milk, consisting of a housing with nozzles for supplying and discharging fluid installed inside the housing on a spring-loaded spool rod and a sealed chamber with its elastic membrane fixed between the upper and lower flaps and equipped with a fitting for supplying a compressed gas membrane, characterized in that, in order to facilitate maintenance of the device, as well as to increase the number of switchings, it is provided with an additional pipe for draining the liquid, made in the form of A transitional nut connected to the housing and having a conical groove that serves as the spool seat, while the spool is made removable, and the brush passes through the membrane and is extended through the upper flap of the chamber. 2. The device according to claim 1, characterized in that, in order to simplify its development (assembly and assembly, as well as facilitate sanitization, the swabs are equipped with a retaining plate rigidly connected with it and a spacer mounted on it, which serves to fix the position of the spool and a plate with a sleeve mounted above the membrane, and an adjusting nut is installed at the end of the stem. 3. The device according to claim 1, characterized in that, in order to facilitate its installation on the fluid trunk, and to reduce hydraulic resistance, the gas supplying control gas for the control membrane is installed at the lower edge of the chamber, and the stem spring is located above the diaphragm . 4. The device according to claim 1, characterized in that for adjusting the force of compression of the spring, as well as to facilitate disassembly of the chamber, a cup with an opening for passage of the rod is installed in the upper lid of the chamber; 214 10 9  You)