JPS62220488A - Liquid delivery device to which tube for vacuum suction is annexed - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid delivery device equipped with a vacuum suction tube that can improve the efficiency of filling operations, for example, when filling a closed space with liquid.

[Prior art] For example, in the maintenance of automobiles: In the work of filling antifreeze in the engine room or during assembly, the air inside the radiator must be removed by vacuum suction because of the complex shape inside the radiator. If the injection is not performed while handling, filling cannot be completed quickly.

Therefore, in addition to the antifreeze supply hose, a vacuum suction hose connected to a vacuum pump is attached to the antifreeze injection gun.

Figure 5 shows an example of such an antifreeze filling facility.
It is shown as an overall system diagram of M-crotch. 21 is a tank for preparing antifreeze liquid, 51 is a gun for injection of antifreeze liquid, 53 is a radiator, 43 is a vacuum tank, and two hoses, an antifreeze liquid supply hose 61 and a vacuum suction hose 62, are connected to the gun 51. has been done.

[Problems to be Solved by the Invention] When two hoses are attached to a liquid injection gun as described above, the operator must support the injection gun at the beginning and end of the injection operation. When performing a one-haku operation that changes the state, a set of two hoses creates a directionality in the ease with which they can be bent, making it difficult to freely perform the bow-sewing operation, resulting in a decrease in work efficiency. . Further, the need for a larger storage space for the injection gun when it is not in use also reduces workability.

The present invention can simplify the operation of a liquid injection gun to which two tubes are connected, one for liquid supply and one for vacuum suction, such as when injecting liquid into a closed space.
Therefore, it is an object of the present invention to provide a liquid delivery device that can improve injection efficiency.

[Means for Solving the Problems] In order to achieve the above object, a liquid delivery device equipped with a vacuum suction tube according to the present invention includes an outer tube for liquid delivery and an outer diameter smaller than the inner diameter of the outer tube. and an inner tube for vacuum suction that is inserted into the outer tube, and one ends of the outer and inner tubes to be attached to one end side of the inner and outer double tubes are respectively fitted. an outer tube joint and an outer tube joint disposed coaxially so as to be connected to each other, and a vacuum suction port joint connected to the liquid inlet joint and the inner tube joint, respectively. a liquid introduction piping joint; and a liquid discharge having a structure similar to the liquid introduction piping joint to be attached to the other end of the inner and outer double tube, and comprising an outlet for the liquid and a vacuum suction port. A configuration with a joint for use was adopted.

[Operations and Effects of the Invention] The device of the present invention having the above configuration has an inner tube for vacuum suction attached to the inner joint of a set of tube joints coaxially provided to the liquid introduction pipe joint. Fit one end of the outer tube for liquid delivery into the outer fitting. In the same way, assembly of the device is completed by fitting the other ends of the tubes for empty suction and liquid delivery into a pair of inner and outer joints provided coaxially with the liquid discharge joint, respectively. .

The method for using this device is to place the liquid inlet and vacuum suction port of the liquid introduction piping joint close to the place where the device is used, and to connect the piping connected to the storage tank and vacuum tank for the liquid for injection. Connect to the end fitting of Then, the liquid outlet and the vacuum suction port of the liquid discharge joint may be connected to the piping joint of the liquid injection gun, which is provided with a vacuum suction port, respectively.

Therefore, conventional liquid injection guns, which are equipped with a vacuum suction mechanism to allow for smooth injection of liquid into sealed containers, have two systems: one for supplying liquid and one for vacuum suction. The liquid injection gun according to the present invention can now connect only one coaxial tube, instead of connecting multiple tubes as in the past. Entanglement,
When multiple flexible tubes are used in a bundle, the ease of bending of the tube bundle becomes directional, resulting in a loss of smooth operation of swinging the injection gun, which increases the efficiency of injection operations. Not only does this eliminate the problem of the width decreasing, but it also saves storage space for the device. Furthermore, if the device of the present invention is used in a cable carrier for moving a plurality of liquid delivery tube groups in parallel on a multi-functional work line, the overall configuration can be made significantly more compact.

[Example] The apparatus of the present invention will be specifically described below based on an example shown in the accompanying drawings.

FIGS. 1 and 2 are a partially cutaway perspective view of an embodiment of the apparatus, and a vertical cross-sectional view of a piping joint for concentrated introduction of different types of liquid (or a joint for discharge).

The device as a whole includes a double structure tube A that combines two tubes that should be connected to a liquid supply source and a vacuum suction source, respectively, and a liquid introduction piping joint B fitted to one end of the tube A. It also consists of a liquid discharge joint C fitted on the other end.

The outer tube 1 constituting the double structure tube A and the inner tube 2 for vacuum suction, which has an outer diameter smaller than the inner diameter of this outer tube 1 and is inserted into the outer tube 1 for liquid delivery, have a good quality. Almost equally, they are made of highly flexible materials such as true synthetic resin or synthetic rubber.

The specific material may be selected as appropriate depending on the chemical properties of the liquid to be delivered, the temperature of the liquid, etc.

The liquid introduction piping joint B and the liquid discharge joint C have essentially the same MA construction, and fit one end side of each of the outer tube 1 and the inner tube 2, which are arranged coaxially. A set of tube fittings 3a and 4a for
(or 5a and 6a) and outer tube fitting a
Liquid inlet joint 3b (liquid outlet joint 5) connected to (5a)
b), and an in-page suction port joint 4b (6b) connected to the inner tube joint 4a (8a).

Such a joint MA construction may be formed by cutting a corrosive metal such as brass or aluminum alloy, or it may be formed by casting so-called engineering brass with excellent physical and chemical properties. It may also be a method of combining molded parts.

The shape and dimensions of the joint may be changed as necessary.

FIG. 3 is a piping system diagram of a facility showing an example in which the apparatus of the present invention is used for 1M stages of filling antifreeze into an engine radiator provided at the end of an automatic intermediate assembly line.

The freezing point depressant flows from the undiluted solution piping 20 connected to the undiluted solution storage tank, and the pure water for diluting the undiluted solution flows from the pure water piping 30 connected to the storage tank into the antifreeze Sll mixed-containing camellia 21 ff1tilt! It is sent through the 0 solenoid valve G. 22 is an agitator for stirring in the tank, 23 is a liquid level gauge, q is a pressure regulating valve, P is a pump, f is a flow meter, and 24 is at the end of the antifreeze supply piping whose concentration of freezing point depressant has been adjusted. A valved fitting located adjacent to the antifreeze injection line. 25 is a pneumatically operated remote control valve interposed upstream of the pipe joint, and a indicates an antifreeze delivery line. The antifreeze filling facility is also equipped with a vacuum suction device to remove air from inside the radiator to facilitate filling. 41 is a vacuum pump, 42 is a vacuum tank, 43 is a separation tank for separating moisture, oil, etc. from the sucked air to prevent it from entering the vacuum pump 41, and 26 is a vacuum suction pipe. A pipe joint with a valve 27 attached to the end is a remote-controlled air-operated valve, and is in charge of connecting and disconnecting the inside of the radiator and the vacuum tank.

An example of the structure of the liquid injection gun D is shown in FIG. 4 as a side sectional view. The injection gun D includes a body 100 of a liquid introduction/intermittent valve having a liquid introduction port 101 and a discharge port 106, a connection port 201 to a vacuum source, and a vacuum suction port 100.
The vacuum suction valve body 200 having a vacuum suction valve body 206 is connected by a bracket 400. 1
05 and 205 are valve bodies built into each valve body, and the piston 102 is loosely fitted into the valve body 100 or 200, which functions as a cylinder.
Or it is fixed to the end of the piston rod 202. 110 and 210 are compressed air introduction ports for causing the piston 102 or 202 to move back and forth;
3 and 203 are coil springs for urging the valve body 105 or 205 to close.

A terminal vacuum suction port 306 is formed in the nozzle-shaped liquid discharge port 0106 so as to surround this discharge port, and a cylindrical airtight seal made of a rubber elastic material roughly surrounds the terminal vacuum suction port 30G. A cover 307 is attached. By bringing the liquid discharge port 106 of the liquid injection gun D into pressure contact with the injection port of the radiator, this seal cover 307 isolates the inner space of the radiator from the outside world. A third valve body 300 is interposed between the vacuum suction port 206 at the downstream end of the vacuum suction valve body 200 and the terminal vacuum suction port 306 . 301.302.
303, 305 and 310 are respectively valve body 2
00, a piston, a one-piece spring for keeping the valve closed, a compressed air inlet for operating the valve body and piston.

The liquid injection gun D having such a structure connects the gas inlet 101 and the connection port 201 to the vacuum source to the liquid outlet joint 5b of the liquid discharge joint C of the device of the present invention.
By connecting it to the vacuum suction port joint 6b, it becomes ready for use. As shown in Figure 3,
When the connection port 201 of the injection gun D is directly connected to the joint 6b of the joint C using a joint put, the liquid inlet 10
1 and the joint 5b cannot be directly connected, so a short tube 7 is used to connect the two.

As is clear from a comparison with FIG. 5, which shows a conventional facility for injecting antifreeze into the engine runner, conventionally an antifreeze delivery hose 61 and a vacuum suction hose 62 are attached to the injection head 51. Whereas two hoses had to be connected in parallel, if the liquid delivery device of the present invention is used, the two hoses can be coaxially connected to the injection gun D. Only one rod is required, and various excellent effects as described above can be obtained.

The shapes and structures of the liquid injection and discharge joints are not limited to those shown in the embodiments, and can be modified in various ways.

The above example describes the case of filling a radiator with antifreeze, but the point is that the radiator has a complex internal shape where the work cannot proceed quickly unless the air existing in the injection space is forcibly discharged. The device of the present invention is extremely useful when filling liquid into a closed space or a closed space.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the device according to the present invention, Fig. 2 is a side sectional view of a liquid introduction piping joint (or liquid discharge joint), and Fig. 3 is used in an antifreeze filling facility for automobile radiators. FIG. 2 is a system diagram of the entire facility, illustrating how the device of the present invention is connected to an antifreeze injection gun. FIG. 4 is a side sectional view illustrating the structure of the liquid injection gun. FIG. 5 is a system diagram of a conventional antifreeze filling facility. In the diagram A...Double tube inside and outside B...Piping joint for liquid introduction C...Joint for liquid discharge D...Gun for liquid injection 1...Outer tube 2...Inner tube 3a, 4a, 5a, 6a...Tube joint Fig. 1A Fig. 2

Claims (1)

[Scope of Claims] 1) an outer tube for liquid delivery; an inner tube for vacuum suction having an outer diameter smaller than the inner diameter of the outer tube and inserted into the outer tube; and the inner and outer double tubes. an outer tube joint and an outer tube joint that are attached to one end of a tube and are arranged coaxially so that one ends of the outer and inner tubes can be fitted together, respectively; and an outer tube joint that is connected to the outer tube joint. a liquid introduction piping joint comprising a liquid inlet joint and a vacuum suction port joint connected to the inner tube joint; a liquid introduction piping joint to be attached to the other end of the inner and outer double tube; A liquid delivery device having a similar structure and equipped with a vacuum suction tube consisting of a liquid discharge joint having an outlet for the liquid and a vacuum suction port. 2) A liquid delivery device equipped with a vacuum suction tube according to claim 1, wherein both the outer and inner tubes are made of flexible material. 3) The liquid injection gun is used by attaching to the liquid introduction pipe joint a vacuum suction port for removing air from the injection space. Liquid delivery device with vacuum suction tube as described. 4) The liquid discharge joint is attached to the vacuum suction tube according to any one of claims 1 to 3, wherein the liquid discharge joint is incorporated into the body of the liquid injection gun. liquid delivery device.