CN215919346U

CN215919346U - Welding furnace vacuum bin single-channel nitrogen injection and vacuum-pumping system

Info

Publication number: CN215919346U
Application number: CN202121918138.1U
Authority: CN
Inventors: 向军; 王钊一; 冯霞霞; 王金磊
Original assignee: Jiangsu Xinzhida New Energy Equipment Co ltd
Current assignee: Jiangsu Xinzhida New Energy Equipment Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-03-01
Anticipated expiration: 2031-08-16

Abstract

The utility model provides a single-channel nitrogen injection and vacuum-pumping system of a vacuum bin of a welding furnace, which comprises a nitrogen inlet pipe, a reversing valve, a vacuum tank and a vacuum bin, wherein the vacuum bin is provided with an air inlet and an air outlet; when the right position of the reversing valve is accessed, the first connecting port is communicated with the third connecting port; and when the left position of the reversing valve is accessed, the second connecting port is communicated with the third connecting port. The nitrogen inlet pipeline and the vacuum pumping pipeline are designed into an air inlet and outlet, so that the structure of the vacuum chamber is simplified, meanwhile, the nitrogen inlet pipe, the vacuum tank and the air inlet and outlet are connected through a reversing valve, the space in the vacuum chamber is pumped into a vacuum state rapidly by the left-position connection, and the vacuum state can be broken by filling nitrogen by the right-position connection, so that the nitrogen consumption is saved by 30%.

Description

Welding furnace vacuum bin single-channel nitrogen injection and vacuum-pumping system

Technical Field

The utility model relates to a single-channel nitrogen injection and vacuum-pumping system for a vacuum bin of a welding furnace.

Background

The vacuum welding furnace is mainly used in the semiconductor electronic packaging industry, the welding process of the solder paste is generally direct high-temperature sintering in the air, welding holes are generated by direct welding in the air, poor products are generated due to insufficient solder desoldering due to the large welding holes, and the yield of products is reduced. Therefore, a sealed inner cavity is required to be formed on the workbench through the bin cover during working, the sealed inner cavity is pumped into a vacuum bin, welding quality is guaranteed, formation of a welding cavity is reduced, and nitrogen is filled to break a vacuum state after welding is completed.

In the prior art, two connecting pipelines are generally arranged on the bin cover, one pipeline is used for introducing nitrogen, and the other pipeline is used for pumping vacuum, so that the structure of the bin cover is complex, and the nitrogen consumption is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that in the prior art, two connecting pipelines are generally arranged on a bin cover, one pipeline is used for introducing nitrogen, and the other pipeline is used for pumping vacuum, so that on one hand, the structure of the bin cover is complicated, and the nitrogen consumption is increased.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a welding furnace vacuum bin single-channel nitrogen injection and vacuum-pumping system comprises a nitrogen inlet pipe, a reversing valve, a vacuum tank and a vacuum bin, wherein the vacuum bin is provided with an air inlet and an air outlet; when the right position of the reversing valve is accessed, the first connecting port is communicated with the third connecting port; and when the left position of the reversing valve is accessed, the second connecting port is communicated with the third connecting port.

Further: and the vacuum tank is connected with a vacuum pump, and when the negative pressure value in the vacuum tank is higher than the preset pressure, the vacuum pump works to pump out the gas in the vacuum tank.

The welding furnace vacuum bin single-channel nitrogen injection and vacuum-pumping system has the beneficial effects that the nitrogen inlet pipeline and the vacuum pumping pipeline are integrated to be designed into the gas inlet and outlet, so that the structure of the vacuum bin is simplified, meanwhile, the nitrogen inlet pipe, the vacuum tank and the gas inlet and outlet are connected through the reversing valve, the space in the vacuum bin can be rapidly pumped into a vacuum state by utilizing the negative pressure of the vacuum tank when the reversing valve is connected at the left position, and the nitrogen can be filled to break the vacuum state when the reversing valve is connected at the right position, so that the structural design saves 30% of the nitrogen usage amount, and is more convenient for switching the vacuum bin state.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a single-channel nitrogen injection and evacuation system of a vacuum chamber of a welding furnace according to the present invention.

In the figure, the device comprises an air inlet pipe 1, an air inlet pipe 2, a reversing valve 3, a vacuum tank 4, a vacuum bin 5, a first connecting port 6, a second connecting port 7, a third connecting port 8 and a vacuum pump.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the utility model include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

As shown in fig. 1, the utility model provides a single-channel nitrogen injection and vacuum-pumping system for a vacuum bin of a welding furnace, which comprises a nitrogen inlet pipe 1, a reversing valve 2, a vacuum tank 3 and a vacuum bin 4, wherein the vacuum bin 4 is provided with an inlet and an outlet, the reversing valve 2 is provided with a first connecting port 5 connected with the nitrogen inlet pipe 1, a second connecting port 6 connected with the vacuum tank 3 and a third connecting port 7 connected with the inlet and the outlet; when the right position of the reversing valve 2 is accessed, the first connecting port 5 is communicated with the third connecting port 7; when the left position of the reversing valve 2 is accessed, the second connecting port 6 is communicated with the third connecting port 7.

This scheme designs into a business turn over gas port with nitrogen gas entering pipeline and suction vacuum pipeline set, vacuum chamber 4's structure has been simplified, nitrogen gas intake pipe 1 simultaneously, connect through switching-over valve 2 between vacuum tank 3 and the business turn over gas port three, switching-over valve 2 left position inserts the negative pressure that can utilize vacuum tank 3 and pumps vacuum state with vacuum chamber 4 inner space rapidly, switching-over valve 2 right position inserts and to abolish vacuum state to vacuum chamber 4 internal filling nitrogen gas, 30% nitrogen gas use amount has been practiced thrift in this kind of structural design, the switching of vacuum chamber 4 state of being convenient for more simultaneously.

The vacuum tank 3 is connected with a vacuum pump 8, and when the negative pressure value in the vacuum tank 3 is higher than the preset pressure, the vacuum pump 8 works to pump out the gas in the vacuum tank 3.

Through setting up vacuum pump 8 on vacuum tank 3, can be in the pressure range of predetermineeing with vacuum tank 3 through the work of vacuum pump 8, this kind of vacuum tank 3 adds vacuum pump 8's structural design, does not need vacuum storehouse 4 vacuum pump 8 all to carry out work when the suction vacuum at every turn, and then has saved vacuum pump 8's power consumption, accords with current energy-saving and falls the environmental protection requirement of arranging.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a welding furnace vacuum storehouse single channel nitrogen gas pours into and evacuation system which characterized in that: the device comprises a nitrogen gas inlet pipe (1), a reversing valve (2), a vacuum tank (3) and a vacuum bin (4), wherein a gas inlet and a gas outlet are formed in the vacuum bin (4), a first connecting port (5) connected with the nitrogen gas inlet pipe (1) is formed in the reversing valve (2), a second connecting port (6) connected with the vacuum tank (3) is formed in the reversing valve, and a third connecting port (7) connected with the gas inlet and the gas outlet is formed in the reversing valve; when the right position of the reversing valve (2) is accessed, the first connecting port (5) is communicated with the third connecting port (7); when the left position of the reversing valve (2) is accessed, the second connecting port (6) is communicated with the third connecting port (7).

2. The welding furnace vacuum chamber single channel nitrogen gas injection and evacuation system of claim 1, characterized in that: the vacuum tank (3) is connected with a vacuum pump (8), and when the negative pressure value in the vacuum tank (3) is higher than the preset pressure, the vacuum pump (8) works to pump out the gas in the vacuum tank (3).