CN2707381Y

CN2707381Y - Displacement pump type lance

Info

Publication number: CN2707381Y
Application number: CN 200420046684
Authority: CN
Inventors: 林添大
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-08
Filing date: 2004-06-08
Publication date: 2005-07-06
Anticipated expiration: 2014-06-08

Abstract

A displacement pump type spray gun of the utility model comprises a bracket, a main post, an outer shell, a diffusing nozzle, a suction pipe, a spanner, a one-way valve and a suction and force pump. The displacement pump type spray gun is characterized in that the one-way valve and the pump body are integral; the one-way valve comprises a valve body and a valve cap; the valve body and the inner circular pipe of the bracket are sealed by liquid; the valve body is communicated with a liquid container; the inner cavity of the bracket is separated into an upper cavity and a lower cavity by a partition board which is integral with the inner circular pipe; the pump body is positioned in the upper cavity; the pump body and the upper part of the valve body are connected to be an integration; the upper opening of the pump body is matched and sealed with the closing cap of the main post; the one-way valve and the suction and force pump are integral; the pump body is directly connected and matched with the closing cap of a right cylinder. The variance of the inner capacity of the pump body makes the valve cap of the one-way valve be opened or closed. The liquid enters the right cylinder and is sprayed from the diffusing cap. Therefore, the spraying pressure and the spraying quantity are large. The use is convenient.

Description

Displacement pump formula spray gun

Technical field

The utility model relates to a kind of spray gun, especially a kind of displacement pump formula spray gun.

Background technology

Being used for the spray gun of atomizing of liquids in the prior art is made of diffuser cap, combined suction and force pump, check valve, suction pipe and housing, check valve is made of principal post, steel ball, and combined suction and force pump communicates with liquid container, and combined suction and force pump makes steel ball break away from principal post, and open check valve, liquid is sprayed by diffuser cap then.Expulsion pressure is little, and steel ball easily breaks away from principal post, the use inconvenience.

Summary of the invention

The purpose of this utility model is: a kind of displacement pump formula spray gun is provided, and not only expulsion pressure is big for it, and emitted dose is big, and easy to use.

The purpose of this utility model is achieved in that a kind of displacement pump formula spray gun comprises support, principal post, shell, diffusion nozzle, suction pipe, wrench, check valve and combined suction and force pump, its special character is: the check valve and the pump housing are integral, check valve comprises valve body, valve gap, the interior pipe liquid sealing of valve body and support, and communicate with liquid container; The inner chamber of support by with the dividing plate of interior pipe one, be divided into upper chamber, lower chambers; The pump housing is positioned at upper chamber, and the top of the pump housing and valve body is connected into one, the capping fitted seal of the upper shed of the pump housing and principal post.

Have on the top board of described capping indent be circle shape groove, outside band upper base the cylinder projection, lid along and the outer wall of circular groove between a cylinder is arranged; One annular slot is arranged on the outer wall of the pump housing; Lid connects with threaded engagement on the support outer wall along the screw thread on the inwall, and in the draw-in groove between cylinder and the groove, the annular slot on the pump housing rides against on the interior shoulder of support on principal post in the upper end of the pump housing, and the cylinder in the capping inserts in the annular slot; Circle hole sleeve on the wrench is on valve body.

A kind of displacement pump formula of the utility model spray gun, check valve and pump one, the pump housing directly links with the capping of right cylinder and cooperates, the variation of pump housing internal capacity opens or closes the valve gap of check valve, and liquid enters right cylinder and sprays from diffuser cap, so expulsion pressure, emitted dose is big, and easy to use.

Description of drawings

Fig. 1 is the cutaway view of a kind of displacement pump formula of the utility model spray gun.

Fig. 2 is the enlarged drawing of the utility model right cylinder.

Fig. 3 is the enlarged drawing of the utility model pump housing and check valve.

The specific embodiment

Among the figure: 1, support, 2, valve body, 3, principal post, 4, diffusion nozzle, 5, shell, 6, suction pipe, 7, nut, 8, wrench, 9, combined suction and force pump.

As shown in Figure 1, a kind of displacement pump formula spray gun comprises support 1, principal post 3, shell 5, diffusion nozzle 4, suction pipe 6, wrench 8, check valve and combined suction and force pump, check valve is made of valve body 2 and valve gap 21, valve body 2 is made one with the pump housing 9, interior pipe 11 liquid sealings of valve body 2 and support 1, and communicate with liquid container by suction pipe 6; The inner chamber of support 1 by with the dividing plate 12 of interior pipe 11 one, be divided into upper chamber 13, lower chambers 14; The pump housing 9 is positioned at upper chamber 13, the pump housing 9 is connected into one with the top of valve body 2, capping 32 fitted seal of the upper shed of the pump housing 9 and principal post 3, under the effect of wrench 8, capping 32 is gapped with the upper shed of the pump housing 9, no external force effect, the upper shed fitted seal of the capping 32 and the pump housing 9, the pump housing 9 is made by elastomeric material, as rubber, rubber and plastic etc.; One fluid passage 31 is arranged in the principal post 3, and fluid passage 31 communicates with capping 32.

As Fig. 2, shown in Figure 3, the top of described capping 32 have indent the cylinder projection 33 that is circle shape groove 35, outside band upper base, lid along 37 and the outer wall of circle shape groove 35 between a cylinder 34 is arranged; One annular slot 91 is arranged on the outer wall of the pump housing 9; Lid connects with threaded engagement on support 1 outer wall along the screw thread on 37 inwalls, the upper end of the pump housing 9 is on principal post 3 in the draw-in groove 36 between cylinder 34 and the groove 35, annular slot 91 on the pump housing 9 rides against on the interior shoulder 15 of support 1, and the cylinder 34 in the capping 32 inserts in the annular slot 91; Wrench 8 is installed on the support 1 by hinge, and the circle hole sleeve of wrench 8 is on the valve body 2 of the pump housing 91 bottoms; Shell 5 is installed on the cylinder projection 33, and principal post 3 connects with diffusion nozzle 4; Support 1 is fixedly connected on liquid container by nut 7; Show the inward recess 23 of valve body 2 and annular projection 22 fitted seal on the valve gap 21 as Fig. 3.

In use, press wrench 8, the compression pump housing 9, then the volume of the pump housing 9 changes, then when valve gap 21 is opened, the pump housing 9 gap occurs with draw-in groove 36, sprays the gap of liquid in liquid container, between check valve, the pump housing 9 and the draw-in groove 36, fluid passage 31, the diffusion nozzle 4; Unclamp wrench 8, valve gap 21 is closed check valve, the pump housing 9 and draw-in groove 36 sealings.

Claims

1, a kind of displacement pump formula spray gun comprises support, principal post, shell, diffusion nozzle, suction pipe, wrench, check valve and combined suction and force pump, it is characterized in that: the check valve and the pump housing are integral, check valve comprises valve body, valve gap, the interior pipe liquid sealing of valve body and support, and communicate with liquid container; The inner chamber of support by with the dividing plate of interior pipe one, be divided into upper chamber, lower chambers; The pump housing is positioned at upper chamber, and the top of the pump housing and valve body is connected into one, the capping fitted seal of the upper shed of the pump housing and principal post.

2, displacement pump formula spray gun according to claim 1 is characterized in that: the top of described capping have indent the cylinder projection that is circle shape groove, outside band upper base, lid along and the outer wall of circular groove between a cylinder is arranged; One annular slot is arranged on the outer wall of the pump housing; Lid connects with threaded engagement on the support outer wall along the screw thread on the inwall, and in the draw-in groove between cylinder and the groove, the annular slot on the pump housing rides against on the interior shoulder of support on principal post in the upper end of the pump housing, and the cylinder in the capping inserts in the annular slot; Circle hole sleeve on the wrench is on valve body.