RU1201U1 - Sprayer - Google Patents

Abstract

A sprayer comprising a tank made with a threaded neck, a sealing element, a pump with a stem, a housing and a check valve located in the tank, a union nut with a bottom and a thread made on its lower lateral interior, the pump housing and the tank form a high chamber pressure communicated through a check valve with the inner part of the housing and through a hose with a locking device with a nozzle, characterized in that the upper part of the pump housing is made with an end the protrusion interacting with the bottom of the nut, the sealing element is made in cross section in the form of an unequal trapezoid, the lower surface of the end protrusion of the pump, the thread surface of the union nut and the end part of the neck of the tank form a chamber in which the sealing element interacting with the latter is placed.

Description

Sprayer

The proposed one relates to the chemical protection devices rast1-1, intended for seore with pests51 and ole: mches, namely, pneumatic sprayer51M

Known ogtszisk {yuatel1, including connection with a threaded, neck reservoir, a sealing element located in the tank pump with a rod, a housing and a shut-off valve,

a flare nut with a bottom and a thread made on its lower bore inner part, located on the neck of the reservoir, the pump casing and reservoir forming a high-pressure chamber, which is valuable through one valve with the inside of the casing and through a hose with a shut-off device with a nozzle /1/.

However, the known device does not have a reliable device for sealing the high-pressure chamber, since the pressing of the sealing element to the end part of the neck is carried out through an intermediate nut with an additional nut. The use of these elements complicates the design, reduces its reliability, and in mass production conditions leads to unnecessary costs of working time and materials.

The purpose of this proposal is to increase the reliability of the device while simplifying its design.

This goal is achieved due to the fact that the upper part of the pump housing is made with a flange nut interacting with the bottom of the nut, the sealing element is made in section in the form of an unequal trapezoid, and the lower surface of the end protrusion of the pump housing, the surface of the threaded union nut and the end part of the neck of the tank form a chamber , wherein

; Object - device NKM - AOiii 7 / ОО) / / duoz .:

Placed, working with the latter, the sealing element.

The proposal is illustrated by drawings, where: in FIG. 1 shows a sprayer, FIG. 2 - device for sealing the high-pressure chamber, on a) ig. 3 - pump inlet valve.

The sprayer consists of a reservoir 1, made with (a filler neck 2, a sealing element 3, located in the reservoir 1 of the pump 4 with the stem 5 of the casing 6 and the shut-off valve 7 (Fig. 3). On the neck 2 there is a union nut & with a bottom 9 The nut S has a threaded Yu, b yulnannun on its lower threaded

the inner part of the pump housing 6 and the tank i form a high-pressure chamber ii communicated through a check valve 7 with the inner part 12 of the pump housing b and through a hose 13 with a shut-off device 14 with nozzle 15. The upper part of the pump housing 6 is made with an end protrusion 16 interacting with the bottom of the nut. The sealing element 3 in cross section in the form of a non-uniform trapezoid, the lower surface 17 of the end protrusion 16 of the pump housing, the thread surface of the union nut and the end part 18 of the neck of the neck of the evoire form a chamber in which Sealing element 3 still fitted.

The device works as follows.

Liquid is poured into the reservoir 1 and a pump 4 is inserted in the seore. The nut e is screwed. When screwing the nut 8, the expanded outer part of the seal goes into the troughs of the thread N of the nut 8, is pressed against both the 1-m surface of the pump casing and the end of the neck of the tank, reliably sealing the high-pressure chamber 11. An increased pressure is created in the high-pressure chamber (up to O, 5 NPA) by pumping air through the check valve 7. , / When opening the zapfsnogo device 14, the fluid is supplied through the hose 13 to the nozzle 15. A spraying process. Thus oraeon hchE1 “Changing the proposed device will improve reliability and simplify the design by eliminating the intermediate part and the additional nut. Source of information igfaskivatel pneumatic backpack OS-7. Passport SZS.OOYAS, SONE, 1989. №,%, b: 39KIV L |

Claims (1)

A sprayer comprising a tank made with a threaded neck, a sealing element, a pump with a stem, a housing and a check valve located in the tank, a union nut with a bottom and a thread made on its lower lateral interior, the pump housing and the tank form a high chamber pressure communicated through a check valve with the inner part of the housing and through a hose with a locking device with a nozzle, characterized in that the upper part of the pump housing is made with an end the protrusion interacting with the bottom of the nut, the sealing element is made in cross section in the form of an unequal trapezoid, the lower surface of the end protrusion of the pump, the thread surface of the union nut and the end part of the neck of the tank form a chamber in which the sealing element interacting with the latter is placed.