Internal liquid filling device for parts

Abstract

The internal liquid filling device comprises a rectangular liquid storage box and a rectangular filling cylinder, the filling cylinder is fixedly installed above the liquid storage box, an end cover for achieving sealing is fixedly installed at an upper end opening of the filling cylinder, and the side faces of the liquid storage box and the filling cylinder are connected with a liquid suction assembly and a liquid return assembly respectively. The liquid suction assembly and the liquid return assembly each comprise a liquid pipe and a liquid closing valve, the side face of the filling barrel is connected with an air exhaust assembly, the air exhaust assembly comprises an air exhaust pipe fixedly installed on the filling barrel, an air closing valve a is installed in the air exhaust pipe, a vacuum generator is installed at the outer end of the air exhaust pipe, and an air inlet assembly is installed on the side face of the filling barrel. According to the device, the interior of the filling cylinder is vacuumized firstly, then liquid is injected in the vacuum environment, bubbles are prevented from being generated in the process of filling the liquid into the part, and it is guaranteed that the liquid is fully filled.

Description

TECHNICAL FIELD

[0001] The utility model relates to tooling jig technical field, concretely is a part's internal liquid filling device. BACKGROUND

[0002] Some parts need to fill specific liquid in the process of assembly production, and the manual method is generally used to fill liquid, but some liquid is easy to produce air bubble due to the influence of its own density, viscosity and other characteristics, and it is easy to appear insufficient when filling into the part, thereby affecting use. SUMMARY

[0003] The utility model discloses a part's internal liquid filling device to solve the problem in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a part's internal liquid filling device, including the liquid receiving box of rectangle and the filling tube of rectangle, the filling tube fixed installation is in the top of liquid receiving box, the upper end of filling tube is fixedly installed with the end cover that realizes the closure, liquid receiving box and filling tube are connected with liquid suction assembly, liquid return assembly respectively in the side, liquid suction assembly, liquid return assembly all include liquid pipe, liquid valve, the side of filling tube is connected with the air extraction assembly, the air extraction assembly includes with the fixed installation of air extraction pipe of filling tube, installs relevant gas valve a in air extraction pipe, the outer end of air extraction pipe is installed with vacuum generator, the side of filling tube is installed with air inlet assembly.

[0005] Preferably, the upper end of the filling tube is provided with a ring groove, and a sealing ring is bonded in the ring groove, the sealing ring is used for sealing the gap between the end cover and the upper end of the filling tube, and the end cover and the filling tube are fixedly installed through screws.

[0006] Preferably, the air outlet of the vacuum generator is provided with a silencer.

[0007] Preferably, the air inlet assembly includes an air inlet pipe, and a relevant gas valve b is connected to the air inlet pipe, and a filter head is installed at the outer end of the air inlet pipe.

[0008] Compared with the prior art, the utility model has the beneficial effects that: the device first extracts the vacuum in the interior of the filling tube, then injects liquid in the vacuum environment, prevents air bubble from being produced in the process of filling liquid into the part, and guarantees that the liquid is filled fully. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0010] In the figure: 1, liquid storage box; 2, filling cylinder; 3, end cap; 4, sealing ring; 5, liquid suction assembly; 6, liquid return assembly; 7, air suction assembly; 71, vacuum generator; 72, silencer; 73, air valve a; 8, air inlet assembly. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0012] Please refer to Figure 1 The utility model provides a kind of technical scheme: a kind of internal liquid filling device of part, including rectangular liquid storage box 1 and rectangular filling cylinder 2, liquid storage box 1 is used to store the liquid that is filled to part, the top of liquid storage box 1 is installed breather valve to balance the air pressure inside and outside liquid storage box 1, filling cylinder 2 is fixedly installed above liquid storage box 1, the upper end of filling cylinder 2 is fixedly installed with the end cap 3 that realizes closure, the upper end of filling cylinder 2 is equipped with annular groove, sealing ring 4 is bonded in annular groove, sealing ring 4 is used to seal the gap between end cap 3 and the upper end of filling cylinder 2, end cap 3 and filling cylinder 2 are fixedly installed by screw.

[0013] Liquid storage box 1 and filling cylinder 2 are respectively connected with liquid suction assembly 5, liquid return assembly 6 in side surface, liquid suction assembly 5, liquid return assembly 6 all include liquid pipe, liquid valve, liquid in liquid storage box 1 is transported to filling cylinder 2 by liquid suction assembly 5, liquid return assembly 6 is used to draw back the residual liquid in filling cylinder 2 after use to liquid storage box 1.Liquid suction assembly 7 is connected to the side of filling cylinder 2, and the air suction assembly 7 includes an air suction pipe fixedly installed with the filling cylinder 2, an air valve a73 is installed in the air suction pipe, a vacuum generator 71 is installed at the outer end of the air suction pipe, a silencer 72 is installed at the air outlet of the vacuum generator 71, and the silencer 72 is used to reduce the noise of the exhaust. The vacuum generator 71 is used to generate negative pressure to vacuumize the inside of the filling cylinder 2, eliminate air bubbles and ensure that the liquid is fully filled. The air inlet assembly 8 is installed on the side of the filling cylinder 2, the air inlet assembly 8 includes an air inlet pipe, an air valve b is connected to the air inlet pipe, a filter head is installed at the outer end of the air inlet pipe, the filter head is used to prevent impurities in the air from entering the inside, and the air inlet assembly 8 is used to air into the filling cylinder 2 to break the vacuum.

[0014] Working principle: After opening end cap 3, place the part inside, then lock end cap 3 to seal it. Vacuum the filling cylinder 2 through the vacuum assembly. At this time, open the switch valve in the liquid suction assembly 5 to allow liquid to enter the filling cylinder 2. After the inner cavity is filled, close the injection. At this time, slowly release the air shut-off valve b in the air intake assembly 8 to allow air to enter and break the vacuum. Then take out the part to complete one liquid filling process. This device can eliminate liquid filling air bubbles and ensure liquid filling quality. Open the liquid shut-off valve in the liquid return assembly 6, and the remaining oil in the filling cylinder 2 flows back to the liquid collection tank 1 under the action of gravity.

[0015] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An internal liquid filling device for a part, comprising a rectangular liquid storage tank (1) and a rectangular filling cylinder (2), wherein the filling cylinder (2) is fixedly installed above the liquid storage tank (1), and an end cap (3) for sealing is fixedly installed at the upper end of the filling cylinder (2), characterized in that: The liquid storage box (1) and the filling cylinder (2) are respectively connected to a liquid suction assembly (5) and a liquid return assembly (6) on their sides. The liquid suction assembly (5) and the liquid return assembly (6) both include a liquid pipe and a liquid shut-off valve. The filling cylinder (2) is connected to a vacuum assembly (7) on its side. The vacuum assembly (7) includes a vacuum pipe fixedly installed with the filling cylinder (2). A vacuum valve a (73) is installed in the vacuum pipe. A vacuum generator (71) is installed at the outer end of the vacuum pipe. An air inlet assembly (8) is installed on the side of the filling cylinder (2).

2. The internal liquid filling device for a part according to claim 1, characterized in that: The upper port of the filling cylinder (2) is provided with an annular groove, and a sealing ring (4) is bonded in the annular groove. The sealing ring (4) is used to seal the gap between the end cap (3) and the upper port of the filling cylinder (2). The end cap (3) and the filling cylinder (2) are fixedly installed by screws.

3. The internal liquid filling device for a part according to claim 2, characterized in that: The vacuum generator (71) is equipped with a silencer (72) at its outlet.

4. The internal liquid filling device for a part according to claim 2, characterized in that: The air intake assembly (8) includes an air intake pipe, into which a relevant air valve b is connected, and a filter head is installed at the outer end of the air intake pipe.

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