CN2114513U - High pressure airless sprayer - Google Patents

Abstract

The utility model relates to mechanical equipment used for the spraying of liquid coating material, which is characterized in that a combination block of a built-in valve in a special purpose is provided, the combination block is arranged on the upper sides of a main body and a diaphragm pump group, a lacquer container 7 is arranged on the upper part of the combination block, the central concave of the lower side of the combination block is connected with a diaphragm to form a diaphragm pump cavity, one end of the diaphragm pump cavity is provided with an inlet one-way valve 1, the other end of the diaphragm pump cavity is provided with an outlet one-way valve 2, and the outlet one-way valve 2 is communicated with a pipe joint 5, a manual relief valve, the combination valve of a safety valve, a back feed valve, a pressure meter 6, etc. One side of the combination valve is communicated with an overflow and unloading pipe, a lever 20 is arranged between the pressure control valve and the back feed valve, the other end of the lever 20 is opposite to a push rod 21, and the push rod 21 is opposite to the inlet one-way valve 1.

Description

High pressure airless sprayer

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

At present, compressed air spraying is generally adopted in the liquid coating spraying, but the spraying of this mode has influenced sprayed surface owing to containing water, oil, impurity in the compressed air, cause spot occurs, turn white, low in glossiness, coating quality be relatively poor, and spraying application efficient is also low.

The purpose of this utility model provides the plant equipment of the liquid coating spraying usefulness that a kind of coating quality is good, efficiency of construction is high.

Below in conjunction with accompanying drawing technical solution of the present utility model is described in detail.

Fig. 1 cross section of the present utility model organigram.

Fig. 2 pressure-control valve of the present utility model left side apparent structure schematic diagram.

The right apparent structure schematic diagram of Fig. 3 combination valve of the present utility model.

According to shown in Figure 1, the utility model includes spray gun, flexible pipe, high pressure airless spray equipment has the combination piece of special-purpose built-in valve, make up the piece connection and be installed in machine main body and membrane pump group upside, combination piece top is connecting one and is being coated with charging basket 7, combination piece lower end central authorities recess is connected with the barrier film 3 of membrane pump and has been combined into the barrier film pump chamber, one end of barrier film pump chamber has import check valve 1, the left side of import check valve 1 has pipeline to link to each other with the pipe joint 4 of combination piece end face, the other end has outlet check valve 2, in outlet check valve 2 rear ends a main line and three bye-passes are arranged, one main line links to each other by the flexible pipe of the outer spray gun of pipe joint 5 and combination piece, 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 6, one side of combination valve has leads to the outer overflow off-load pipeline of combination piece, side at the combination piece has pressure-control valve, and pressure-control valve and feedback valve are in together on the center line and the spacing of being separated by From, the lever 20 perpendicular with its center line arranged between pressure-control valve and feedback valve, the other end of lever 20 is over against push rod 21, and push rod 21 and lever 20 are vertical and be in together on the center line with import check valve 1 and certain distance separately.

Above-described Combined hydraulic piece, its top by pipe joint 4 be coated with charging basket 7 and link to each other.

Feedback valve of the present utility model has valve body 18, at valve body 18 centers main hole is arranged, and pressure sensing post 17 is arranged in the main hole, and the tail end of pressure sensing post 17 is in pressure membrane 19.

What be worth proposition is that the combination valve with unloader and safety valve one of the present utility model has valve body 22, valve body 22 is screwed into combination block one side with screw thread and fixes, there is needle 23 at the center in the valve body 22, the afterbody of needle 23 has spring 24, the tail end of spring 24 has blind nut 25, the tail end of valve body 22 is connected with knurling handle 27 by screw thread, the central small hole of knurling handle 27 and recess pass the tail end of needle 23 and the nut 26 of band split pin are housed, there is an outlet to be connected in the front end side of needle 23 with overflow off-load pipeline, the axial inboard of the cylindrical of knurling handle 27 is provided with reference column 28, stop 29 is housed on the combination block of reference column 28 corresponding radiuss of turn, jump ring sheet 30 is arranged in the stop 29.

What be worth proposition simultaneously is pressure-control valve of the present utility model, valve body 12 is loaded on the outside of the combination block of special-purpose built-in valve, be connected with the combination block screw with screw thread, the knurling handle 8 that exposes is connected with valve body 12 with screw thread again, piston 13 is housed in the valve body 12, there is butterfly spring 11 rear end of piston 13, at the center of knurling handle 8 adjustable threaded top post 9 is arranged, its radially a side screw thread briquetting 10 is arranged, there is reference column 14 the axial inboard of the cylindrical of knurling handle 8, stop 15 is housed on the combination block of reference column 14 corresponding radiuss of turn, jump ring sheet 16 is arranged in the stop 15.

One end of lever 20 of the present utility model is between pressure-control valve and the feedback valve, and the other end has contact screw, and contact screw is over against the push rod of push rod 21, and push rod 6 has a sleeve pipe, and push rod is arranged in the sleeve pipe, and spring is arranged on the push rod, and the tail end of spring has sealing gasket.

Operation principle of the present utility model is such, the bottom surface of barrier film pump chamber is barrier film 3 and membrane pump assembly thereof, in the pump main body and perpendicular to the power eccentric shaft is housed below the membrane pump assembly, on the power eccentric shaft eccentric cam is arranged, eccentric cam is equipped with needle bearing outward, the needle bearing cylindrical contacts with the stem of membrane pump assembly, when the power eccentric shaft whenever rotates a circle, up compressed septum 3 is once for the stem that eccentric cam promotes the membrane pump group by needle bearing, the answer of membrane pump group is to rely on the butterfly spring on the pump group stem to recover, when barrier film 3 is down made the pump chamber extensional motion, pump chamber produces negative pressure, the coating of paint can 7 is opened import check valve 1 through pipe joint 4 along pipeline and is entered pump chamber, when barrier film 3 up during compression movement, pump chamber dwindles, the coating pressurized produces pressure in the pump chamber, import check valve 1 is closed, pump chamber continues compression, forming high pressure coating impacts outlet check valve 2 and enters the high pressure vanish system, system pressure raises, enter high-pressure hose through outlet pipe connection 5 and deliver to spray gun, be the fan-shaped spray painting through the spray tip atomizing and go out.

The pressure of high pressure vanish system shows by Pressure gauge 6, the pressure control of vanish system is to be realized by pressure-control valve with adjusting, the pressure regulation of this valve is to be undertaken by the rotation that exposes knurling handle 8, when tightening, lever 20 is lifted, and this moment, push rod 21 was subjected to itself spring tension effect to leave import check valve 1.When membrane pump is made operate as normal, system pressure raises, when the high pressure limiting scope to pressure-control valve preset of pressure was above, pressure sensing post 17 was raise and jack-up by system pressure, and the spring 11 that makes pressure-control valve by compression, this moment, the upper end of lever was moved to the left thereupon, the lower end compressing push rod 21 of lever 20 moves to right, and opens import check valve 1, import check valve 1 cisco unity malfunction, this moment, membrane pump also can't voltage supply, thereby system pressure is controlled in the pressure limiting scope automatically.

When membrane pump started or clean, combination valve handle 27 was left-handed during to stop 29, and this moment, needle 23 was pulled away from, valve opening communicates with the overflow unloading channel, and combination valve just becomes unloader, makes the pressure system off-load, the liquid of barrier film pump chamber output is flow back to paint can 7, circulation in forming.When knurling handle 27 right-hand rotations were extremely spacing, combination valve became safety valve, and this moment is when surpassing pressure limiting when system pressure, needle 23 rear spring are compressed, needle 23 top opening, high pressure coating overflows back paint can 7 to the combination valve side exit, guarantees that system pressure is normal.

The utility model has the advantages that because high pressure airless spray equipment does not need to supply gas with air compressor, the water, oil, the impurity that bring in the compressed air of so just having avoided being sent, to making coating surface and coating quality good, efficient improves greatly than the compression aerial spraying, also energy-conservation, reduce the coating loss, reducing has significant substantive progress on the environmental pollution.The utility model is easy to use to be easy to carry flexibly, easy to process, is easy to promote, practical.

Claims (5)

1, a kind of high pressure airless spray equipment that is used for the liquid coating spraying, include spray gun, flexible pipe is formed, it is characterized in that having the combination block of dedicated built-in formula valve, combination block connects and is installed in machine main body and membrane pump group upside, combination block top is connecting a paint can 7, central indentation below the combination block is connected with the barrier film of membrane pump 3 and has been combined into the barrier film pump chamber, one end of barrier film pump chamber has import check valve 1, the left side of import check valve 1 has passage to link to each other with the pipe joint 4 of combination block end face, the other end has outlet check valve 2, there are a main line and three bye-passes in outlet check valve 2 rear ends, one main line links to each other by the flexible pipe of the outer spray gun of pipe joint 5 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 6, a side of combination valve is connected with 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 20 perpendicular with its center line arranged between pressure-control valve and feedback valve, the other end of lever 20 is over against push rod 21, and push rod 21 and lever 20 are vertical and be in together on the center line with import check valve 1 and separated by a distance.

2, high pressure airless spray equipment according to claim 1 is characterized in that combination block top links to each other with paint can 7 by pipe joint 4.

3, high pressure airless spray equipment according to claim 1 is characterized in that feedback valve has valve body 18, at valve body 18 centers main hole is arranged, and pressure sensing post 17 is arranged in the main hole, and the tail end of pressure sensing post 17 has pressure membrane 19.

4, high pressure airless spray equipment according to claim 1, it is characterized in that combination valve has valve body 22, valve body 22 is screwed into combination block one side with screw thread and fixes, there is needle 23 at the center in the valve body 22, the tail end of needle 23 has spring 24, the tail end of spring 24 has blind nut 25, the afterbody of valve body 22 is connected with knurling handle 27 by screw thread, the central small hole of knurling handle 27 and recess pass the tail end of needle 23 and the nut 26 of band split pin are housed, there is an outlet to be connected in the front end side of needle 23 with overflow off-load pipeline, the axial inboard of the cylindrical of knurling handle 27 is provided with reference column 28, stop 29 is housed on the combination block of reference column 28 corresponding radiuss of turn, jump ring sheet 30 is arranged in the stop 29.

5, high pressure airless spray equipment according to claim 1, it is characterized in that the valve body 12 of pressure-control valve is loaded on the outside of the combination block of special-purpose built-in valve, be connected with the combination block screw with screw thread, the knurling handle 8 that exposes is connected with valve body 12 with screw thread again, piston 13 is housed in the valve body 12, there is butterfly spring 11 rear end of piston 13, at the center of knurling handle 8 adjustable threaded top post 9 is arranged, its radially a side screw thread briquetting 10 is arranged, there is reference column 14 the axial inboard of the cylindrical of knurling handle 8, stop 15 is housed on the combination block of reference column 14 corresponding radiuss of turn, jump ring sheet 16 is arranged in the stop 15.

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