CN212619749U - Vacuum drying machine - Google Patents
Vacuum drying machine Download PDFInfo
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- CN212619749U CN212619749U CN202021469086.XU CN202021469086U CN212619749U CN 212619749 U CN212619749 U CN 212619749U CN 202021469086 U CN202021469086 U CN 202021469086U CN 212619749 U CN212619749 U CN 212619749U
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- vacuum
- breaking valve
- connecting pipe
- opening
- vacuum cavity
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Abstract
The utility model provides a vacuum drying machine, including board, vacuum cavity, connecting pipe and broken vacuum valve, the vacuum cavity is fixed on the board, one side of vacuum cavity is equipped with throws the material passageway, throw the material passageway with the vacuum cavity intercommunication, be equipped with opening and gas outlet on the vacuum cavity, the gas outlet is kept away from open-ended position, the opening with the one end of connecting pipe is connected, the other end of connecting pipe with broken vacuum valve connects, broken vacuum valve control and external opening or closing of ventilating. The vacuum breaking valve is automatically opened, partial air is properly introduced, and saturated vapor generated by drying materials in the sealed vacuum cavity is diluted and drained, so that the container is rapidly discharged with secondary vapor, rapid drying is realized, vapor detention is reduced, and the drying effect is improved.
Description
Technical Field
The utility model relates to a drying equipment especially indicates a vacuum drying machine.
Background
The vacuum dryer is a low-temperature drying device for heating materials, can be used for dehydrating and drying materials with high added value and heat sensitivity, such as agricultural and sideline products, health products, food, medicinal materials, fruits and vegetables, chemical raw materials and the like, and can also be used for low-temperature concentration of chemical products, removal of crystal water, drying of enzyme preparations and vacuum extraction of Chinese herbal medicines in a vacuum (negative pressure) state.
In the prior art, in order to seek improvement of the use effect of the vacuum container and energy saving, all users and equipment manufacturers seek to improve the vacuum degree of the drying container at a glance, thereby causing increase of investment of the vacuum container and load of the vacuum pump. In fact, under a certain vacuum state and heating temperature, steam evaporated from the vacuum equipment can reach an equilibrium state, the vapor pressure in the vacuum container is fixed on a constant value, the water vapor in the closed vacuum equipment fills the whole space and cannot be pumped away by the vacuum pump, so that the equipment is stopped, and the part of the water vapor filled in the closed vacuum container is condensed back to the material again, so that the dryness of the dried material is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provides a vacuum drier, aiming at solving the technical problems of improving the dryness of materials and shortening the drying time.
In order to solve the technical problem, the utility model discloses a technical scheme be: the vacuum drying machine comprises a machine table, a vacuum cavity, a connecting pipe and a vacuum breaking valve, wherein the vacuum cavity is fixed on the machine table, a feeding channel is arranged on one side of the vacuum cavity and communicated with the vacuum cavity, an opening and an air outlet are formed in the vacuum cavity, the air outlet is far away from the position of the opening, the opening is connected with one end of the connecting pipe, the other end of the connecting pipe is connected with the vacuum breaking valve, and the vacuum breaking valve controls the opening or closing of air ventilation with the outside.
The vacuum breaking valve comprises a sealing piece, an air inlet is formed in the vacuum breaking valve, and the sealing piece is movably located on the air inlet.
The top of the vacuum breaking valve can be provided with a knob, and the knob is connected with the sealing piece through a guide piece arranged in the vacuum breaking valve.
The guide piece comprises a guide post, and the guide post is in telescopic connection with a guide hole formed in the sealing piece.
The guide piece further comprises a spring, the spring is located between the guide post and the guide hole, one end of the spring is connected with the guide post, and the other end of the spring is connected with the guide hole.
And one end of the connecting pipe, which is provided with a pipe orifice, is matched with the threaded end arranged on the vacuum breaking valve.
The beneficial effects of the utility model reside in that: through using broken vacuum valve, reach the constant value when the vacuum in the vacuum chamber, open broken vacuum valve, suitably introduce some air, dilute the drainage to the produced saturated vapor of the dry material in airtight vacuum chamber to discharge the container rapidly with the secondary vapor, realize rapid draing, reduce the steam and detain, improve drying effect.
Drawings
The following detailed description of the specific structure of the present invention with reference to the accompanying drawings
FIG. 1 is an overall structure diagram of the vacuum dryer of the present invention;
FIG. 2 is a structural diagram of the vacuum breaking valve of the present invention;
fig. 3 is a sectional view of the vacuum breaker of the present invention.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like 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 drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 to 3, a vacuum dryer is provided, which includes a machine table 5, a vacuum chamber 2, a connecting pipe 6 and a vacuum breaking valve 1, wherein the vacuum chamber 2 is fixed on the machine table 5, a feeding channel 4 is arranged on one side of the vacuum chamber 2, the feeding channel 4 is communicated with the vacuum chamber 2, an opening and an air outlet 3 are arranged on the vacuum chamber 5, the air outlet 3 is far away from the opening, the opening is connected with one end of the connecting pipe 6, the other end of the connecting pipe 6 is connected with the vacuum breaking valve 1, and the vacuum breaking valve 1 controls the opening or closing of the ventilation with the outside. Open broken vacuum valve 1 through control, suitably introduce some air, dilute the drainage to the produced saturated vapor of the dry material of airtight vacuum intracavity to get rid of the container rapidly with the secondary vapor, realize rapid draing, reduce the steam and detain, improve drying effect.
In the embodiment, the use of the vacuum breaking valve is a result of breaking the conventional reverse thinking, and the larger the vacuum drying chamber is, the higher the air dryness required for breaking the vacuum (or the anhydrous inert gas is used), and the more obvious the effect is. According to Maxwell velocity distribution rate and molecular diffusion theory, at a certain temperature, the evaporation rate (drying rate) of water is only related to the relative humidity of gas and is distributed in a gradient manner, although the vacuum breaking valve breaks the vacuum degree in a short time to reduce the vacuum degree, the evaporation rate of the water is apparently reduced; but on the other hand because the humidity of air is far less than the steam humidity in the container, consequently, because the evaporation rate of air's joining will promote moisture under certain pressure, consequently, under certain condition, adopt broken vacuum technique can shorten the drying time of material greatly.
Further, according to theoretical calculation, in a negative pressure vacuum cavity of 1 cubic meter, under the condition of keeping a negative pressure state of 0.02MPa, 132g of evaporated water vapor is always remained and cannot be pumped away, and the water content in the humid air is only 17.3% of the water vapor content in the negative pressure container, so that the dryness of material drying can be effectively improved by adopting the vacuum breaking valve, the water content is reduced, and the drying efficiency is improved. Specifically, the vacuum breaker 1 comprises a sealing member 13, the vacuum breaker 1 is provided with an air inlet 14, and the sealing member 13 is movably arranged on the air inlet 14.
In this embodiment, when the vacuum degree in the vacuum chamber 2 reaches a limit value, that is, the negative pressure in the vacuum chamber 2 reaches a constant value, the air below the sealing member 13 on the air inlet acts on the sealing member 13, the upward force overcomes the self-weight of the sealing member, the sealing member 13 is pushed upward to open the sealing surface, the air flows into the vacuum breaking valve 1 from the air inlet and enters the vacuum chamber 2, the vacuum is broken, after the vacuum is eliminated, the sealing member 13 drops under the self-weight to reseal, and the air does not enter the vacuum chamber any more.
Through using broken vacuum valve 1, when the vacuum in vacuum cavity 2 reaches the constant value, open broken vacuum valve 1 automatically, suitably introduce some air, dilute the drainage to the produced saturated vapor of the dry material in airtight vacuum cavity 2 to discharge the container with the secondary vapor rapidly, realize rapid draing, reduce the vapour and detain, improve drying effect.
Specifically, the air inlet 14 is located in the middle of the vacuum breaker 1, and a channel arranged in the vacuum breaker 1 is communicated with the connecting pipe 6. The air is fed through the air inlet 14, the opening and closing of the air inlet 14 and the channel in the vacuum breaking valve 1 are controlled by the sealing piece 13, the negative pressure balance of the vacuum cavity 2 is broken, the vacuum degree in the drying vacuum cavity 2 is reduced (pressure is increased or decreased) after the air is fed, and the vacuum breaking valve 1 is automatically closed when the vacuum degree is reduced to a specified value, so that the purposes of accelerating drying and improving the drying effect are achieved.
Specifically, the vacuum breaker 1 may be provided with a knob 11 at the top thereof, and the knob 11 is connected to the sealing member 13 through a guide 12 provided in the vacuum breaker 1. The opening and closing of the vacuum breaking valve 1 can be adjusted through the knob 11, in a common situation, the opening and closing of the vacuum breaking valve can be achieved without the knob, the knob is a control mode, the opening and closing of the vacuum breaking valve can be adjusted through the knob flexibly, and therefore the opening and closing of the vacuum breaking valve 1 can be controlled.
Specifically, the guide member 12 includes a guide post 121, and the guide post 121 is telescopically coupled to a guide hole 122 provided in the sealing member 13. The guide post 121 makes a telescopic motion, i.e., a lifting motion, in the guide hole 122, or the guide post does not make a motion and the guide hole 122 makes a lifting motion, thereby indirectly adjusting to open or close the vacuum breaker 1.
Specifically, the guide 12 further includes a spring 15, the spring 15 is located between the guide post 121 and the guide hole 122, one end of the spring 15 is connected to the guide post 121, and the other end of the spring 15 is connected to the guide hole 122. The knob 11 has the function of controlling the magnitude of the negative pressure through the arranged spring 15.
Specifically, one end of the connecting pipe 6 provided with the pipe orifice is matched with the threaded end of the vacuum breaking valve 1. The pipe orifice enables the connecting pipe to be matched and fixed with the threaded end of the vacuum breaking valve, and meanwhile, other types of vacuum breaking valves 1 can be replaced at any time according to actual use conditions.
Specifically, the shape of the air outlet 3 is a cone, a circle, or a rectangle. The shape of the air outlet can be determined according to actual use conditions.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (6)
1. A vacuum drier is characterized in that: the vacuum device comprises a machine table, a vacuum cavity, a connecting pipe and a vacuum breaking valve, wherein the vacuum cavity is fixed on the machine table, a feeding channel is arranged on one side of the vacuum cavity and communicated with the vacuum cavity, an opening and an air outlet are formed in the vacuum cavity, the air outlet is far away from the position of the opening, the opening is connected with one end of the connecting pipe, the other end of the connecting pipe is connected with the vacuum breaking valve, and the vacuum breaking valve controls the opening or closing of air ventilation with the outside.
2. The vacuum dryer of claim 1, wherein: the vacuum breaking valve comprises a sealing element, the vacuum breaking valve is provided with an air inlet, and the sealing element is movably located on the air inlet.
3. The vacuum dryer of claim 2, wherein: the top of the vacuum breaking valve can be provided with a knob, and the knob is connected with the sealing piece through a guide piece arranged in the vacuum breaking valve.
4. The vacuum dryer of claim 3, wherein: the guide piece comprises a guide post, and the guide post is in telescopic connection with a guide hole formed in the sealing piece.
5. The vacuum dryer according to claim 4, wherein: the guide piece further comprises a spring, the spring is located between the guide post and the guide hole, one end of the spring is connected with the guide post, and the other end of the spring is connected with the guide hole.
6. The vacuum dryer of claim 1, wherein: the end of the connecting pipe, which is provided with the pipe orifice, is matched with the thread end arranged on the vacuum breaking valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021469086.XU CN212619749U (en) | 2020-07-22 | 2020-07-22 | Vacuum drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021469086.XU CN212619749U (en) | 2020-07-22 | 2020-07-22 | Vacuum drying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212619749U true CN212619749U (en) | 2021-02-26 |
Family
ID=74719241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021469086.XU Active CN212619749U (en) | 2020-07-22 | 2020-07-22 | Vacuum drying machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212619749U (en) |
-
2020
- 2020-07-22 CN CN202021469086.XU patent/CN212619749U/en active Active
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