RU109664U1 - DEVICE FOR SUBMITTING MICRO QUANTITIES OF THE CURRENT ENVIRONMENT - Google Patents

Abstract

 A device for supplying trace amounts of fluid, including an electric drive and a metering pump, containing discharge and suction lines, a displacement chamber with a working diaphragm and a central opening, a suction chamber with a separation diaphragm and an outlet valve with a diaphragm, characterized in that the electric actuator is equipped with a transition housing, which is equipped with a metering pump and secured in it with a lid-lock, while a clutch is installed on the actuator rod that connects to a magnet located inside the suction chamber tions in the separating diaphragm.

Description

The utility model relates to pump engineering and relates to metering pumps; it can be used in various sectors of the national economy for the metered supply of microfluids of a fluid, for example, medicines for diabetic patients.

Dosing devices are of various types: mechanical, automatic and electronic type.

Known mechanical dispenser having a lever actuator, a cylindrical body and a rod with a stepped notch on it, connected using a stop with a plunger of a piston (US Pat. No. 2234882). The disadvantage of this design: bulkiness, complexity of the device, the inability to fix the device on the patient’s body.

In recent years, there have been reports of the successful use of electronic metering systems for the treatment of cancer and surgical diseases (US Pat. RF No. 2221594, No. 2368312). These dispensers allow you to continuously and accurately inject drugs. However, dispensers are very expensive, it is difficult to administer several drugs, which requires a serial and parallel connection of metering devices.

There are various devices for administering drugs in which dosing is carried out automatically (US Pat. RF No. 1674851, 2221594)

Known membrane electromagnetic pump containing a membrane mounted in the housing with a rigid center made of ferromagnetic material, limiting the chamber of the electromagnetic drive, communicating with the atmosphere of the discharge channel, in which an adjustable choke is installed (autosvid. USSR No. 628334).

Known diaphragm metering pump, comprising a housing, a spring-loaded diaphragm displacer and a single-winding electromagnetic drive connected to a power supply by a pulse current installed in the housing (ed. St. USSR # 1705609).

A device for a dosed injection of insulin, consisting of a cartridge in the housing of which is placed a bottle with a piston installed inside, a piston advancement mechanism during injection associated with an external pressure mechanism, characterized in that the external pressure mechanism is made in the form of a hydraulic drive, and the promotion mechanism the piston contains a soft cap with an integrated catheter connected to a hydraulic actuator, while the soft cap is pressed against the bottle by a sleeve (US Pat. RF No. 96485).

The closest technical solution to the proposed technical solution includes a device for supplying micro-quantities of fluid, including an electric drive, a metering pump for supplying micro-quantities of fluid, containing discharge and suction lines, a displacement chamber with a working diaphragm and a central opening, a suction chamber with a separation diaphragm and an outlet a valve with a diaphragm (US Pat. RF No. 1086215). The disadvantage of this metering pump is its low performance, the inability to replace the metering pump.

The purpose of the proposed technical solution is the simplicity and convenience of assembling the structure, increasing the operational properties of the device for supplying micro-quantities of fluid and increasing its service life.

This goal is achieved through the use of a device for supplying micro-quantities of fluid, including an electric drive, a metering pump containing discharge and suction lines, a displacement chamber with a working diaphragm and a central hole, a suction chamber with a separation diaphragm, and an outlet valve with a diaphragm. The electric drive is equipped with a transitional housing in which the metering pump is installed and fixed in it with a latch-clamp, and a coupling is connected to the electric drive rod connecting to the magnet located inside the suction chamber in the separation diaphragm.

Figure 1 shows a General view of the connection of the metering pump to the electric drive, where 1 is the electric drive, 2 is the metering pump, 3 is the lid-lock, 4 is the suction line and 5 is the discharge line.

Figure 2 presents the general diagram of the device, where 1 is an electric drive, 2 is a metering pump, 3 is a latch-lid, 4 is a suction line, 5 is a discharge line, 6 is a rod of an electric drive, 7 is a coupling, 8 is a transition housing electric actuator, 9 - displacement chamber, 10 - working diaphragm of the displacement chamber, 11 - central hole in the working diaphragm, 12 - outlet chamber, 13 - separation diaphragm of the suction chamber, 14 - outlet valve, 15 - diaphragm of the outlet valve, 16 - magnet, 17 - suction chamber, 18 - housing displacement chamber, 19 - bottom.

In the initial state, the metering pump 2 (Fig. 1) is inserted into the transitional housing 8 of the electric drive 1 and secured by a cover-lock 3.

When unscrewing the cover-retainer 3, the metering pump 2 is easily removed from the adapter housing 8 of the electric drive 1.

The device consists of nodes (figure 2) connected in a single structure. The magnet 16 is rigidly fixed at the base of the separation diaphragm 13.

When installing the metering pump 2 in the adapter housing 8, the magnet 15 attracts a sleeve 7 made of magnetizable material and connects the separation diaphragm 13 to the movable rod 6 of the electric drive, thereby forming an inextricable structure, i.e. the reciprocating movement of the rod 6 during operation of the electric drive causes respectively reciprocating motion of the separation diaphragm 13.

The dosed liquid through the suction line 4, the suction chamber 17 and the central hole 11 in the working diaphragm 10 enters the displacement chamber 9 formed by one surface of the displacement chamber housing 18. When the separation diaphragm 13 moves to the right, the diaphragm surface overlaps the central hole 11 in the working diaphragm and a portion liquid from the displacement chamber 9 through the outlet valve 14, formed by the other surface of the housing of the displacement chamber 18 and the diaphragm of the outlet valve 15, is pushed into the outlet chamber 12 and then through The hole in the bottom 19 and the discharge line 5 to the outside.

When the separation diaphragm 13 moves to the left, a new portion of the liquid from the suction chamber 17 through the hole 11 again enters the displacement chamber 9.

Common components in the pump: electric drive, suction chamber, working diaphragm, displacement chamber, outlet chamber, inlet and outlet valves.

Claims (1)

A device for supplying trace amounts of fluid, including an electric drive and a metering pump, containing discharge and suction lines, an extrusion chamber with a working diaphragm and a central opening, a suction chamber with a separation diaphragm and an outlet valve with a diaphragm, characterized in that the electric actuator is equipped with a transition housing, which is equipped with a metering pump and secured in it with a lid-lock, while a clutch is installed on the actuator rod that connects to a magnet located inside the suction chamber tions in the separating diaphragm.