CN2214233Y

CN2214233Y - High pressure airless spraying machine

Info

Publication number: CN2214233Y
Application number: CN 95233102
Authority: CN
Inventors: 梁青松; 钟波; 陈明传
Original assignee: 梁青松; 钟波; 陈明传
Current assignee: Shandong Agriculture Machinery Research Institute
Priority date: 1995-01-25
Filing date: 1995-01-25
Publication date: 1995-12-06
Anticipated expiration: 2005-01-25

Abstract

The utility model relates to a paint sprayer, which comprises a housing body 10, the combined valve blocks on the upper part of the housing body 10, a diaphragm pump whose upper and lower cavity bodies are respectively arranged on the combined valve blocks and the housing body 10, a joint 22 used for the connection with paint containers, and a spray gun joint 3, wherein, the upper cavity and the lower cavity of the joint 22 are mutually matched into integration. The utility model is characterized in that the upper cavity body of the diaphragm pump is provided with a suction valve, a discharging valve 28 is communicated with the upper cavity of the diaphragm pump, a gas exhausting and unloading valve 25 and the spray gun joint 3 are connected in series in the rear passageway of the discharging valve 28. The utility model has the advantages of simple structure, convenient adjustment, reliable action, long service life, high painting and spraying quality.

Description

High pressure airless spraying machine

The utility model relates to the plant equipment of liquid coating spraying usefulness.

Common liquid coating spraying equipment all adopts compressed air spraying, this mode because of contain water in the compressed air, oily impurity influences the sprayed surface effect.

On September 2nd, 1992 disclosed a kind of high pressure airless spray equipment by Patent Office of the People's Republic of China, this technology includes spray gun, flexible pipe, it is characterized in that: the combination block that dedicated built-in formula valve is arranged, combination block connects and is installed in machine main body and membrane pump group upside, combination block top is connecting a paint can, central indentation below the combination block is connected with the barrier film of membrane pump and has been combined into the barrier film pump chamber, one end of barrier film pump chamber has the import check valve, the left side of import check valve has the pipe joint of passage and combination block end face to join, the other end has the outlet check valve, there are a main line and three bye-passes in outlet check valve rear end, wherein a bye-pass links to each other by the flexible pipe of the outer spray gun of pipe joint and combination block, one bye-pass links to each other with the combination valve of unloader and safety valve, another bye-pass links to each other with feedback valve in being contained in the pressure-control valve relative opening, also have a bye-pass to link to each other with Pressure gauge, one side of combination valve is connected with one and leads to the outer overflow off-load pipeline of combination block, side in combination block has pressure-control valve, pressure-control valve and feedback valve are in together on the center line and are separated by a distance, the lever perpendicular with its center line arranged between pressure-control valve and feedback valve, the other end of lever 20 is over against push rod, and push rod is vertical with lever and be in together on the center line also separated by a distance with the import check valve.This technology does not need to provide injection power with air compressor, has avoided sneaking in the coating water, and wet goods impurity has improved the coating surface quality.Blemish in an otherwise perfect thing be that this technical pattern is comparatively complicated, thereby bring certain difficulty for processing and functional reliability aspect, and barrier film is fragile.

The purpose of this utility model is that the deficiency at above-mentioned technology provides a kind of simple in structure, reliable in action, the high pressure airless spraying apparatus of long service life.

High pressure airless spray equipment provided by the utility model, comprise housing, be positioned at the combination valve of housing top, up and down cavity lay respectively on combination valve block and the housing and cooperatively interact the all-in-one-piece membrane pump and with container for paint the join joint and the spray gun joint of usefulness, it is characterized in that: in the upper cavity of membrane pump, be equipped with inlet valve, drain valve communicates with the membrane pump epicoele, is being installed in parallel exhaust unloader and spray gun joint in the back passage of drain valve.

Exhaust unloader in the said structure is by the valve seat of the unloading hole that has intercommunicating pore and cooperate with joint, forms jointly with the equipped steel ball of intercommunicating pore with by the adjustment screw rod of handle turn.

Aforesaid membrane pump is by placing the barrier film on housing and the combination valve block interface to tell upper and lower chamber, wherein the same chamber of plunger displacement pump epicoele that constitutes of membrane pump cavity of resorption and plunger bushing and plunger.In the membrane pump cavity of resorption, suit the return spring of being adjusted by locking nut on the diaphragm center bar, is positioned at the plunger lower end check valve is housed, and correspondence side suit on housing the oil pressure adjusting valve that cooperates with the membrane pump cavity of resorption with it.Plunger is driven by eccentric wheel, and suit back-moving spring on plunger pair.

In order to improve the service life of barrier film, to have on the barrier film in combination valve block and barrier film corresponding section in the aforesaid membrane pump and fill up.At casing and barrier film corresponding section the one barrier film underlay that has open-work that is sleeved on the diaphragm center bar is arranged.

At length introduce embodiment of the present utility model below in conjunction with Figure of description:

Figure of description 1 is the schematic diagram of the utility model agent structure;

Figure of description 2 is horizontal section schematic diagrames of combination valve in the utility model;

Figure of description 3 is generalized sections of the utility model oil pressure adjusting valve;

In above-mentioned accompanying drawing: 1-flexible pipe, 2-joint, 3-discharging opening joint, 4-high-pressure hose, the 5-return spring, 6-plunger bushing, 7-plunger, 8-bearing, the 9-flat key, 10-housing, 11-eccentric wheel, 12-electric motor end cap, the 13-check valve, 14-back-moving spring, 15-locking nut, 16-barrier film underlay, the 17-barrier film, the 18-vent valve fills up on the 19-barrier film, the 20-valve, 21-valve body, 22-joint, the 23-flexible pipe, 24-handle, 25-off-load air bleeding valve, the 26-valve body, 27-bolt, 28-drain valve, the 29-handle, 30-spring, 31-oil pressure adjusting valve, the 32-intercommunicating pore, the 33-steel ball, 34-adjusts screw rod.

As shown in the figure, connecting firmly housing 10 on the electric motor end cap 12, on the lower surface of housing 10, purge cock is being set; Connecting firmly the valve body 26 and the vent valve 18 of combination valve in the upper surface of housing 10.

Membrane pump is divided into up and down two chambers by the barrier film 17 between valve body 26 and housing 10, and is corresponding with barrier film 17, respectively have on valve body 26 and the housing 10 groove and respectively setting-in pad 19 on the barrier film and have the barrier film underlay 16 of open-work.

Be equipped with the check valve of forming by valve 20, valve body 21 and valve seat, back-moving spring and retaining pin module in the upper cavity of aforementioned membrane pump.Communicate with upper cavity, on valve body 26, be equipped with the discharge one-way valve 28 that has regulator.The discharging opening joint 3 and the exhaust unloader 25 that can be connected by high-pressure hose 4 and spray gun that be equipped with in parallel in the back passage of discharge one-way valve 28.Wherein exhaust unloader 25 by the valve seat of the unloading hole that has pressure coating intercommunicating pore 32 and cooperate with joint 2, with valve seat on the equipped steel ball 33 of intercommunicating pore, with form jointly by the adjustment screw rod 34 of handle 24 turns, one end of flexible pipe 23 and joint 2 are equipped, and the other end feeds among the container for paint.

The lower chamber of aforementioned membrane pump is made of jointly the plunger bushing 6 and the equipped with it plunger that has the reducing endoporus 7 that are fitted in housing 10 grooves.In lower chamber, a check valve 13 is arranged at the bottom that is positioned at plunger 7, is holding center-pole and the return spring 5 of suit barrier film 17 thereon and the locking nut 15 that cooperates with it of barrier film 17 between check valve 13 and barrier film 17.

The below that is positioned at plunger 7 is to be fitted in eccentric wheel on the motor shaft by flat key 9,11 and be sleeved on rolling bearing 8 on the eccentric wheel 11; Suit plunger return spring 14 in the outside of plunger bushing 6, and this back-moving spring is spacing by spring base and pin.Communicate with the membrane pump cavity of resorption oil pressure adjusting valve 31 is installed on the sidewall of housing 10.

In use, flexible pipe 1 and flexible pipe 23 insert respectively in the container for paint, and high-pressure hose 4 joins with spray gun; The pasta position of hydraulic oil is injected in inspection to the inner chamber of housing 10 through vent valve 18 places; Starter motor then, and utilize handle 24 to adjust exhaust unloaders 25, the gas in the pipeline is discharged.

It is up that driven by motor eccentric wheel 11 promotes plunger 7, the compression of hydraulic oil in the membrane pump cavity of resorption is reached the force value that oil pressure adjusting valve 31 limits, and with this pressure through barrier film 17 conduction, coating in the compressed septum pump epicoele, force coating to spray through drain valve 28, joint 1, flexible pipe 4 to spray gun, when system quits work, by exhaust unloader 25 with coating in the system through joint 2, flexible pipe 23 enters in the container for paint.

When eccentric wheel 11 went to the below, descending at back-moving spring 14 effect lower plungers 7, cavity pressure descended under the membrane pump, and check valve 13 is opened, and the hydraulic oil in the housing 10 enters the membrane pump cavity of resorption through check valve 13; Simultaneously descending at the effect lower diaphragm plate 17 of return spring 5, negative pressuren zone appears in the membrane pump epicoele, and valve 20 is opened, and coating re-fills the membrane pump epicoele, finishes a working cycles.

The utility model has the advantages that: simple in structure, easy to adjust, reliable in action, long service life, coating quality height.

Claims

1, a kind of high pressure airless spray equipment, comprise housing (10), be positioned at the combination valve block of housing (10) top, upper and lower cavity lay respectively at combination valve block and housing (10) go up and cooperatively interact the all-in-one-piece membrane pump and with container for paint join used joint (22) and spray gun joint (3), it is characterized in that: in the upper cavity of membrane pump, be equipped with inlet valve (20), drain valve (28) communicates with the membrane pump epicoele, is being installed in parallel exhaust unloader (25) and spray gun joint (3) in the back passage of drain valve (28).

2, high pressure airless spray equipment according to claim 1, it is characterized in that the valve seat of exhaust unloader (25), form with the equipped steel ball (33) of intercommunicating pore (32) with by the adjustment screw rod (34) of handle (24) turn by the drain charge hole that has intercommunicating pore (32) and cooperate with joint (2).

3, high pressure airless spray equipment according to claim 1, it is characterized in that: membrane pump is by placing the barrier film (17) on housing (10) and the combination valve block interface to tell, cavity of resorption, the same chamber of plunger displacement pump epicoele that constitutes of membrane pump cavity of resorption and plunger bushing (6) and plunger (7) wherein, in the membrane pump cavity of resorption, suit the return spring of being adjusted by locking nut (15) (5) on the diaphragm center bar, be positioned at plunger (7) lower end check valve (13) is housed, the oil pressure adjusting valve (31) that cooperates with the membrane pump cavity of resorption is housed in the last side of housing (10), plunger (7) is driven by eccentric wheel (11), and suit back-moving spring (14) on plunger pair.

4, high pressure airless spray equipment according to claim 1, it is characterized in that: there is pad (19) on the barrier film combination valve block and barrier film (17) corresponding section, in casing (10) and barrier film (17) corresponding section the one barrier film underlay (16) that has open-work that is sleeved on the diaphragm center bar is arranged.