CN209918118U

CN209918118U - Portable spraying device

Info

Publication number: CN209918118U
Application number: CN201920638619.3U
Authority: CN
Inventors: 谢卫志
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-01-10
Anticipated expiration: 2029-05-07

Abstract

A portable spraying device belongs to the technical field of spraying and is designed for saving canned liquefied gas. The device comprises a liquefied gas tank (1) with a valve (3) and an ejector (4), a coating tank (2) and a coating pipe communicated with the liquid in the coating tank and the ejector; the method is characterized in that: the coating tank (2) is arranged below the liquefied gas tank (1); the coating pipe is formed by connecting an upper coating pipe section (201) and a lower coating pipe section (209); the upper section (201) of the coating pipe is positioned in the liquefied gas tank (1), the upper end of the upper section of the coating pipe is communicated with the ejector (4), and the lower end of the upper section of the coating pipe penetrates through the bottom of the liquefied gas tank (1); when the paint tank (2) is installed in the liquefied gas tank (1), the lower section (209) of the paint pipe extends into the liquid in the paint tank, and the upper end of the lower section (209) of the paint pipe is communicated with the lower end of the upper section (201) of the paint pipe.

Description

Portable spraying device

Technical Field

The utility model relates to a portable spraying device. The device can be used for repairing the damage of the paint surface of the automobile.

Background

The existing portable spraying device takes canned liquefied gas as a compressed gas source, absorbs the coating in a coating can through a jet device (generally referred to as a jet vacuum pump, the same applies below), and then sprays the atomized coating through a nozzle. The coating pipe of the existing device is arranged outside the liquefied gas tank, the structure of the ejector is not compact, and the defect of low use efficiency of the canned liquefied gas exists.

Disclosure of Invention

The utility model aims at providing a portable spraying device saves compressed air source.

This object is achieved in that:

a portable spray coating device comprises a liquefied gas tank (a gas tank for short, a universal finger positive pressure source) with a valve and an ejector (the gas tank is sold with the valve and the ejector 4 integrally in a commodity circulation link), a coating tank and a coating pipe communicated with liquid in the coating tank and the ejector; the method is characterized in that: the paint tank (which can be disassembled) is arranged below the liquefied gas tank; the coating pipe is formed by connecting an upper section of the coating pipe and a lower section of the coating pipe; the upper section of the coating pipe is positioned in the liquefied gas tank, the upper end of the upper section of the coating pipe is communicated with the ejector, and the lower end of the upper section of the coating pipe penetrates through the bottom of the liquefied gas tank; when the coating tank is installed in the liquefied gas tank, the lower section of the coating pipe extends into the liquid in the coating tank, and the upper end of the lower section of the coating pipe is communicated with the lower end of the upper section of the coating pipe.

Further, in the embodiment, there is a ventilation cover of the paint can, which intervenes in the detachable mounting of the paint can and the liquefied gas tank; the connecting short pipe is arranged on the coating material tank, and is in interference fit with a connecting plug at the bottom of the gas tank penetrated by the upper section of the coating material pipe, and the screw thread is arranged below the coating material tank and is in fit with the screw thread at the tank opening of the coating material tank; the upper end of the lower section of the coating pipe is inserted into the short connecting pipe from bottom to top and is arranged below the breathable upper cover, and the lower end of the lower section of the coating pipe extends into the bottom of the coating tank.

The utility model has the advantages that: through the contrast test, the utility model discloses save liquefied gas more than prior art by 50%. Because the upper pipeline of the coating pipeline is positioned in the liquefied gas tank, the structure of the ejector can be compact, the path of the jet gas source is shortened, the kinetic energy loss is reduced, and the additional characteristics of the embodiment are that the structure is further compact, the flow channel is optimized, or the flow direction and the distribution of the gas flow and the liquid flow are optimized, so that the remarkable effect is achieved.

Drawings

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is an exploded schematic view of the embodiment.

Fig. 2 is a schematic view of the valve 3 in an open state.

Fig. 3 is a schematic view of the valve 3 in the closed state.

Fig. 4 is a schematic top view of the valve stem 35.

Fig. 5 is a bottom view of the gland 5.

Fig. 6 is a schematic diagram of the ejector 4. The finger cover 5 is shown only as a part of the ejector member, and is a schematic sectional view of these members in the a-a direction (see fig. 5). In the assembled condition, the outer tube 355 extends into the settlement bore 40 whilst the outer tube 359 extends into the bore 41.

The notation in the figure is: 1, a liquefied gas tank (short for gas tank), 11, an upper cover of the gas tank, 19, a connecting plug at the bottom of the gas tank; 2, a paint tank, a 21 air permeable cover, 210 air vents and 219 connecting short pipes; 201 coating tube upper section, 209 coating tube lower section, 2099 filter screen; 3, valves, 31 sealing rings, 35 valve rods, 350 valve holes, 351 annular channels, 355 outer pipes, 359 inner pipes and 39 circular pipe slideways; 4 ejector, 40 settling round hole, 41 round hole, 410 bend, 42 arc hole, 48 channel, 49 nozzle; and 5 refers to a gland.

Detailed Description

A portable spraying device comprises a liquefied gas tank 1 (a gas tank for short, a universal finger positive pressure source) with a valve 3 and an ejector 4, a coating tank 2 and a coating pipe communicated with liquid in the coating tank and the ejector, wherein the liquefied gas tank 1 is provided with the valve 3 and the ejector 4 for integral sale in a commodity circulation link; the method is characterized in that: the paint tank 2 is detachably mounted below the liquefied gas tank 1; the coating pipe is formed by connecting an upper coating pipe section 201 and a lower coating pipe section 209; the upper section 201 of the coating pipe is positioned in the liquefied gas tank 1, the upper end of the upper section of the coating pipe is communicated with the ejector 4, and the lower end of the upper section of the coating pipe penetrates through the bottom of the liquefied gas tank 1; in a state where the paint tank 2 is mounted in the liquefied gas tank 1, the lower section 209 of the paint pipe extends into the liquid in the paint tank, and the upper end of the lower section 209 of the paint pipe and the lower end of the upper section 201 of the paint pipe are communicated with each other.

Further, in the embodiment, there is a paint can air-permeable cap 21 interposed between the detachable mounting of the paint can and the liquefied gas tank; a connecting short pipe 219 arranged on the ventilation cover 21 is in interference fit with a connecting plug 19 at the bottom of the gas tank penetrated by the upper section 201 of the coating pipe, and threads arranged below the ventilation cover are in fit with the threads at the opening of the coating tank; the lower section 209 of the paint pipe is provided with a short connecting pipe 219 inserted from bottom to top at the upper end thereof and mounted below the upper breathable cover, and the lower end thereof extends into the bottom of the paint tank.

The inactive paint can has a further sealing cap, not shown.

Further, in the embodiment, the valve 3 is mounted on the gas tank upper cover 11, and the valve body (except for the upper part of the valve rod 35) is positioned in the gas tank; a circular tube slideway 39 is fixedly arranged on the upper cover 11 of the gas tank; the valve stem 35 of a sleeve structure is placed in the circular tube slide way 39 (radial connecting ribs are arranged between the inner tube and the outer tube of the sleeve structure), and is supported upwards by a spring (in the embodiment, the spring is used as the coating tube upper section 201 which is elastically bent); the inner tube 359 of the sleeve structure forms a passage for the coating material (the passage is permanently unobstructed), and the annular passages 351 (or parts thereof) between the outer tube and the inner tube form passages for the compressed gas (hereinafter referred to as annular passages); the outer pipe wall of the annular channel is provided with a through hole to form a valve hole 350; when the valve rod 35 is supported at a higher position by the spring, the valve hole 350 is covered by the sealing ring 31, and the valve is in a closed state (see fig. 3); when the valve stem 35 is manually depressed to a lower position (by pressing a finger cover 5 described later), the valve hole 350 is opened and the valve is in an open state (see fig. 2).

The upper portion of the valve stem 35 penetrates the gas cylinder upper cover 11.

Further, in the embodiment, the ejector 4 is disposed in the finger cover 5; on the top of the finger cover, there are channels 48 and nozzles 49; at the lower part of the finger cover, a circular hole 41 is sleeved in a settling circular hole 40 with a downward orifice and communicated to a channel 48 and a nozzle 49 to form a coating channel; on the side remote from the nozzle, the bottom of the circular settling hole 40 with its opening facing downwards (above the circular settling hole 40 in fig. 6) has an arc-shaped hole 42 with an arc-shaped cross section, which is communicated with a channel 48 and a nozzle 49 to form a jet air source (power air source) channel. The outer wall of the outer pipe of the valve rod 35 of the sleeve structure is in interference fit with the settlement round hole 40 on the finger pressing cover, and meanwhile, the inner pipe of the sleeve structure extends into the round hole 41 on the finger pressing cover, so that the jet air source (in a valve opening state) and the coating are respectively communicated with the ejector 4.

In the embodiment, the circular hole 41 has a rounded bend 410 near the channel 48. Has the function of smooth flow passage.

The two arrows in fig. 6 indicate the jet air supply (to the left in the drawing) and the flow direction of the coating material, respectively. The air is blown forward at the paint inlet (relative to the paint inlet of the ejector), so that the utilization rate of the jet air source is improved.

Further, not shown in the figure, a pipeline joint with a check valve can be reserved on the gas tank 1 for connecting to a compressed gas source. When the liquefied gas in the gas tank is exhausted, the valve 3 and the ejector 4 attached to the gas tank can be reused.

The above embodiments are merely examples to describe the present invention, and do not limit the scope of the patent protection.

Claims

1. A portable painting apparatus comprises a liquefied gas tank (1) with a valve (3) and an ejector (4), a paint tank (2), a paint pipe communicating the liquid in the paint tank and the ejector; the method is characterized in that: the coating tank (2) is arranged below the liquefied gas tank (1); the coating pipe is formed by connecting an upper coating pipe section (201) and a lower coating pipe section (209); the upper section (201) of the coating pipe is positioned in the liquefied gas tank (1), the upper end of the upper section of the coating pipe is communicated with the ejector (4), and the lower end of the upper section of the coating pipe penetrates through the bottom of the liquefied gas tank (1); when the paint tank (2) is installed in the liquefied gas tank (1), the lower section (209) of the paint pipe extends into the liquid in the paint tank, and the upper end of the lower section (209) of the paint pipe is communicated with the lower end of the upper section (201) of the paint pipe.

2. A portable painting device according to claim 1, characterised in that: a venting cover (21) having a paint can; a connecting short pipe (219) arranged on the ventilation cover (21) is in interference fit with a connecting plug (19) at the bottom of the gas tank penetrated by the upper section (201) of the coating pipe, and threads arranged below the ventilation cover are in fit with the threads at the tank opening of the coating tank; the lower section (209) of the coating pipe is provided with a short connecting pipe (219) inserted from bottom to top at the upper end thereof and is arranged below the upper breathable cover, and the lower end thereof extends into the bottom of the coating tank.

3. A portable painting device according to claim 1, characterised in that: the valve (3) is arranged on an upper cover (11) of the gas tank, and the valve body is positioned in the gas tank; a circular tube slideway (39) is fixedly arranged on the upper cover (11) of the gas tank; a valve rod (35) with a sleeve pipe structure is arranged in a circular pipe slideway (39) and is upwards supported by a spring; the inner pipe (359) of the sleeve structure forms a channel for the coating, and the annular channel (351) between the outer pipe of the inner pipe forms a channel for the compressed gas; the outer pipe wall of the annular channel is provided with a through hole to form a valve hole (350); when the valve rod (35) is supported at a higher position by the spring, the valve hole (350) is covered by the sealing ring (31), and the valve is in a closed state; when the valve rod (35) is manually pressed down to a lower position, the valve hole (350) is opened, and the valve is in an opening state.

4. A portable painting device according to claim 3, characterised in that: the ejector (4) is arranged in the finger pressing cover (5); a channel (48) and a nozzle (49) are arranged on the upper part of the finger-pressing cover; at the lower part of the finger-pressure cover, a circular hole (41) is sleeved in a settling circular hole (40) with a downward orifice and communicated to a channel (48) and a nozzle (49) to form a coating channel; an arc-shaped hole (42) with an arc-shaped cross section is formed in the bottom of the settling circular hole (40) with the opening facing downwards on one side far away from the nozzle and communicated with the channel (48) and the nozzle (49) to form a jet flow air source channel; the outer wall of the outer pipe of the valve rod (35) of the sleeve structure is in interference fit with the settlement round hole (40) on the finger pressing cover, and meanwhile, the inner pipe of the sleeve structure extends into the round hole (41) on the finger pressing cover, so that the jet air source and the coating are respectively communicated with the ejector (4).