CN110617702A

CN110617702A - Linkage mechanism of vacuum oven

Info

Publication number: CN110617702A
Application number: CN201911020179.6A
Authority: CN
Inventors: 张紫婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-10-15
Filing date: 2017-10-15
Publication date: 2019-12-27
Also published as: CN110631353A; CN107726858B; CN110631351A; CN107726858A; CN110631352A

Abstract

The invention discloses a linkage mechanism of a vacuum oven, and belongs to the field of vacuum ovens. The method comprises the following steps: eccentric wheel, gangbar, roof pressure piece, its characterized in that: the eccentric wheel is covered by two layers of sliding plates, the upper layer of sliding plate is provided with an arc-shaped track for controlling the movement of an eccentric wheel shaft, the lower layer of sliding plate is provided with a notch for allowing the eccentric wheel to pass through, one side of the linkage rod is connected with the side surface of the eccentric wheel, the other side of the linkage rod is connected with the jacking sheet, and the jacking sheet is contacted with the air release valve. The invention can more accurately control the temperature and the air pressure of the box body in the vacuum oven, controls the opening and closing of the oven door through the linkage mechanism, and has the advantages of simple structure, reasonable design, easy manufacture and convenient use.

Description

Linkage mechanism of vacuum oven

Technical Field

The invention relates to the field of vacuum ovens, in particular to a linkage mechanism of a vacuum oven.

Background

The vacuum oven is generally composed of angle steel and steel plates, a reliable heat insulation layer is formed by filling heat insulation materials between the outer box body and the inner box body, the industrial oven is widely applied, various industrial materials can be dried, and the vacuum oven is universal drying equipment.

The existing vacuum oven generally controls the operation of the oven through a sensor after the working pressure and temperature are preset, when the pressure or temperature in the inner box body exceeds a preset value, the vacuum oven stops working, and when the pressure or temperature is lower than the preset value, the motor continues working. After the drying of the articles in the oven is finished, the oven door can be manually opened only when the pressure of the box body in the vacuum oven is required to be consistent with the atmospheric pressure, but the oven door has the functions of heat insulation and sealing, so that the process is time-consuming and extremely long, the time and labor are wasted when the oven door is opened, the efficiency is extremely low, and the industrial production is influenced.

Therefore, one technical problem that needs to be urgently solved by those skilled in the art is: how to creatively provide an effective measure, the pressure and the temperature of the inner box body of the vacuum oven can be automatically controlled, and the box door of the vacuum oven is controlled through linkage equipment, so that the aims of improving the safety capability and the working efficiency are fulfilled.

Disclosure of Invention

In order to overcome the problems, the invention provides a linkage mechanism of a vacuum oven, which has the advantages of low energy consumption, high safety factor and simple structure, can effectively control the air pressure and the temperature in the vacuum oven box and automatically control the oven door, for the society.

The technical scheme adopted by the invention is as follows: the linkage mechanism of the vacuum oven comprises an eccentric wheel, a linkage rod and a jacking sheet, wherein two layers of sliding plates are covered on the eccentric wheel, an arc-shaped track for controlling the movement of an eccentric wheel shaft is arranged on the upper layer of sliding plate, a notch allowing the eccentric wheel to pass through is arranged on the lower layer of sliding plate, one side of the linkage rod is connected with the side face of the eccentric wheel, the other side of the linkage rod is connected with the jacking sheet, and the jacking sheet is in contact with an air release valve.

Preferably, a rotating shaft at the bottom of the eccentric wheel is fixed on the oven inner box body, the rotating shaft deviates from the circle center of the eccentric wheel disc, the movable shaft is arranged on the other side of the eccentric wheel disc, and a connecting line of the rotating shaft and the axis of the movable shaft passes through the circle center of the eccentric wheel disc.

Preferably, the right side of the lower sliding plate is connected with a latch of the vacuum oven.

Preferably, the upper deck slide moves to the left or right together with the lower deck slide.

Preferably, the contact part of the top pressing plate and the air release valve is of a U-shaped structure.

Compared with the prior art, the invention has the beneficial effects that: the linkage mechanism can control the opening and closing of the valve through the pressure of the top pressing sheet on the pressure release valve, and can adjust the working air pressure and temperature of the inner box body in time.

Drawings

FIG. 1 is a schematic structural view of a linkage mechanism of the vacuum oven of the present invention;

FIG. 2 is a schematic view of the linkage structural components of the present invention;

in the figure: 1. an eccentric wheel; 101. an eccentric wheel disc; 102. a rotating shaft; 103. a movable shaft; 2. a linkage rod; 3. pressing the sheet; 301. a "U" shaped piece; 302. a rotating blade; 303. fixing the pressing sheet; 4. a pressure relief valve; 5. an upper sliding plate; 6. a lower sliding plate; 7. and (5) locking.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, the vacuum oven includes: the eccentric wheel device comprises an eccentric wheel 1, a linkage rod 2 and a jacking sheet 3, wherein two layers of sliding plates are covered on the eccentric wheel, an arc-shaped track for controlling the movement of an eccentric wheel shaft is arranged on an upper sliding plate 5, a notch allowing the eccentric wheel to pass through is arranged on a lower sliding plate 6, one side of the linkage rod 2 is connected with the side face of the eccentric wheel, the other side of the linkage rod 2 is connected with the jacking sheet 3, and the jacking sheet 3 is in contact with an air release. The bottom rotating shaft 102 of the eccentric wheel 1 is fixed on an inner box body of the vacuum oven, the rotating shaft 102 deviates from the circle center of the eccentric wheel disc 101, the movable shaft 103 is arranged on the other side of the eccentric wheel disc 101, and the connecting line of the rotating shaft 102 and the axis of the movable shaft 103 passes through the circle center of the eccentric wheel disc 101. The right side of the lower sliding plate 6 is connected with the lock catch 7 of the vacuum oven. When the vacuum oven works, if the air pressure or the temperature in the vacuum oven exceeds a preset set value, the rotating shaft 102 of the eccentric wheel 1 rotates leftwards to drive the eccentric wheel disc 101 to rotate rightwards, the movable shaft of the eccentric wheel 1 moves leftwards in the arc-shaped track of the lower sliding plate 6, the eccentric wheel disc 101 protrudes outwards, the edge of the wheel disc applies outward thrust to the linkage rod 2, the linkage rod pushes the rotating blade 302 of the top pressing plate 3 to rotate clockwise, the rotating blade 302 pushes the U-shaped piece 303 of the top pressing plate 3 to lift upwards, the valve of the air release valve 4 is opened, outside air enters, the air pressure in the vacuum oven is increased, the temperature is reduced, meanwhile, the lock catch of the vacuum oven is opened, and when the air pressure in the vacuum oven is increased to be consistent with the outside air pressure, the door of the vacuum. If the vacuum oven just works, the rotating shaft 102 of the eccentric wheel 1 rotates rightwards to drive the eccentric wheel disc 101 to rotate rightwards, the movable shaft of the eccentric wheel 1 moves rightwards in the arc-shaped track of the lower sliding plate 6, the eccentric wheel disc 101 is retracted inwards, the edge of the wheel disc is subjected to the reaction force of the linkage rod 2, the rotating blade 302 rotates anticlockwise, the U-shaped piece 303 of the jacking pressing piece 3 is connected with the bottom of the air release valve 4, the valve of the air release valve 4 is in a closed state and isolated from the external environment, the air pressure in the vacuum oven is reduced, the temperature is increased, and meanwhile, the vacuum oven is locked by the lock catch.

Because the link gear has been added in the vacuum oven, the vacuum oven can work through the convenient control relief valve of link gear, atmospheric pressure and temperature in the box in nimble and efficient control, but simultaneously through eccentric wheel rotation drive sliding plate automatic control hasp locking with open, compare with prior art, this vacuum oven simple structure, convenient operation, it is nimble to use, atmospheric pressure and temperature in the interior box are more accurate, the hasp switch is more intelligent, the work efficiency of oven is higher, the security is stronger.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. A linkage mechanism for a vacuum oven comprising: eccentric wheel, gangbar, roof pressure piece, its characterized in that: the upper sliding plate is provided with an arc-shaped track for controlling the movement of an eccentric wheel shaft, the lower sliding plate is provided with a notch for allowing the eccentric wheel to pass through, one side of the linkage rod is connected with the side surface of the eccentric wheel, the other side of the linkage rod is connected with a top pressing plate, and the top pressing plate is in contact with the air release valve;

the upper sliding plate and the lower sliding plate move leftward or rightward together.