A vacuum condensation dryer applicable to low-melting-point anti-decomposition objects

Abstract

The present invention relates to the technical field of vacuum dryers, and specifically relates to a vacuum condensation dryer suitable for low-melting-point anti-decomposition objects, including a vacuum box body and a material conveyor belt. A partition is fixed inside the vacuum box body, and the partition divides the interior of the vacuum box body into two independent chambers. Angle iron flanges are fixed on the outer surface of the partition. One end of each of the two angle iron flanges facing away from the material conveyor belt is respectively fixed with a first vacuum heat exchanger and a second vacuum heat exchanger through bolts and nuts. Medium-through pipes are fixed on both the first vacuum heat exchanger and the second vacuum heat exchanger. The number of the medium-through pipes is two. A vacuum extraction pipe is fixed at the center of the second medium-through pipe. An electric pre-vacuum valve, an electric air inlet valve, and a second vacuum detection device are respectively fixed on the outer surface of the vacuum extraction pipe from right to left. The present invention has a pre-vacuum structure, which is beneficial to controlling the vacuum degree in the material bin, effectively avoiding the formation of frost on the material due to water vapor, and improving the drying efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum dryers, and particularly to a vacuum condensation dryer suitable for low-melting-point anti-decomposition objects. Background Art

[0002] Vacuum drying technology is a technology that places materials under vacuum negative pressure conditions, reducing the boiling point of water. The boiling point of water at one atmosphere is 100 °C, and under vacuum negative pressure conditions, the boiling point of water can be reduced to 80 °C, 60 °C, and 40 °C to start evaporation.

[0003] When the existing vacuum dryers are in use, there is a problem that the vacuum degree is not easy to control. If the vacuum degree does not meet the standard, water vapor cannot be condensed; if the vacuum degree meets the standard, it will cause some water vapor to instantly frost on the materials, and then defrosting needs to be repeated, followed by vacuum drying again, which affects the drying efficiency and increases the power consumption.

[0004] Therefore, it is urgent to design a vacuum condensation dryer suitable for low-melting-point anti-decomposition objects to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a vacuum condensation dryer suitable for low-melting-point anti-decomposition objects, so as to solve the problems of difficult control of the vacuum degree, easy frosting of water vapor on the materials, repeated defrosting required, followed by vacuum drying again, which affects the drying efficiency and increases the power consumption as mentioned in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A vacuum condensation dryer applicable to low-melting-point anti-decomposition objects, comprising a vacuum chamber and a material conveyor belt. The material conveyor belt is evenly installed inside the vacuum chamber. Both ends of the material conveyor belt penetrate through the front and rear of the vacuum chamber, and electric sealing doors are movably installed at the connection between the vacuum chamber and the material conveyor belt. A partition is fixed inside the vacuum chamber. The partition divides the interior of the vacuum chamber into two independent chambers. Angle iron flanges are fixed on the outer surface of the partition. One end of each of the two angle iron flanges facing away from the material conveyor belt is respectively fixed with a first vacuum heat exchanger and a second vacuum heat exchanger through bolts and nuts. Medium-through pipes are fixed on both the first vacuum heat exchanger and the second vacuum heat exchanger. The number of the medium-through pipes is two. The two ends of the first medium-through pipe are respectively connected and fixed to the input ends of the first vacuum heat exchanger and the second vacuum heat exchanger through bolts. The two ends of the second medium-through pipe are respectively connected and fixed to the output ends of the first vacuum heat exchanger and the second vacuum heat exchanger through bolts. A defrosting pipe is fixed at the center of the first medium-through pipe. A first vacuum detection device, an electric defrosting valve, and a heater are respectively fixed on the outer surface of the defrosting pipe from right to left. A blower is fixed at one end of the heater facing away from the electric defrosting valve. A vacuum extraction pipe is fixed at the center of the second medium-through pipe. An electric pre-vacuum valve, an electric intake valve, and a second vacuum detection device are respectively fixed on the outer surface of the vacuum extraction pipe from right to left. A filter is fixed on the electric intake valve. A filtering mechanism is fixed at one end of the vacuum extraction pipe facing away from the second vacuum detection device. The top of the filtering mechanism is connected to an electric vacuum valve through a conduit. One end of the electric vacuum valve facing away from the filtering mechanism is connected to a vacuum pump through a conduit.

[0007] Preferably, two support plates are fixed on the left side of the partition.

[0008] Preferably, a first water receiving tray and a second water receiving tray are respectively fixed at the bottom of the first vacuum heat exchanger and the second vacuum heat exchanger. The first water receiving tray is fixed on the first support plate, and the second water receiving tray is fixed on the second support plate.

[0009] Preferably, a drain pipe is fixed at the bottom of the first water receiving tray. The drain pipe includes a main water pipe, a first branch water pipe, and a second branch water pipe. There are two branches on the right side of the main water pipe. The two branches are respectively connected to the first water receiving tray and the second water receiving tray through the first branch water pipe and the second branch water pipe. The top of the first branch water pipe passes through the first support plate and is connected and fixed to the bottom of the first water receiving tray. The top of the second branch water pipe passes through the second support plate and is connected and fixed to the bottom of the second water receiving tray. The left side at the bottom of the main water pipe is in an "S" shape and is fixedly penetrated on the vacuum chamber.

[0010] Preferably, sealing strips are clamped between the angle iron flanges and the first vacuum heat exchanger and the second vacuum heat exchanger respectively.

[0011] Preferably, the bottom end of the filter is fixed to the top end of the electric air intake valve by means of a threaded connection.

[0012] Preferably, the filtering mechanism includes a filter box, an exhaust pipe is inserted and fixed on the top of the filter box, an air inlet pipe and a drain valve are fixed on the sides of the filter box in an upper and lower distribution, and the vacuum pipe is connected to the inner cavity of the filter box through the air inlet pipe, the exhaust pipe is connected to the electric vacuum valve through a conduit, and filter elements are evenly fixed inside the filter box.

[0013] Preferably, a shock-absorbing sleeve is fixed to the output end of the vacuum pump by bolts, and the end of the shock-absorbing sleeve facing away from the vacuum pump is connected to the electric vacuum valve through a conduit.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the vacuum condensation dryer suitable for low-melting-point anti-deterioration objects has a pre-vacuum structure, which is conducive to controlling the vacuum degree in the material bin, effectively avoiding water vapor from frosting on the material, and improving the drying efficiency.

[0015] (1) The vacuum box is divided into two independent chambers by a partition, one material bin and the other equipment bin. The two bins are connected by two angle iron flanges, and the first vacuum heat exchanger and the second vacuum heat exchanger are respectively installed on the two angle iron flanges. An electric pre-vacuum valve is installed on the vacuum pipeline to control the connection between the equipment bin and the vacuum pipeline. The electric pre-vacuum valve is opened to pre-vacuum to reduce the pressure in the vacuum box. After the first vacuum detection device in the vacuum box reaches the set pressure, the moisture in the material is at the critical point of gasification. Then the electric pre-vacuum valve is closed to vacuum. The pump continues to extract air from the first vacuum heat exchanger and the second vacuum heat exchanger to make them vacuum. At the same time, the moisture in the material is vaporized and sucked into the first vacuum heat exchanger and the second vacuum heat exchanger. The vacuum pump is started and stopped by the second vacuum detection device to maintain the vacuum degree inside the first vacuum heat exchanger and the second vacuum heat exchanger. The heat exchange plates of the first vacuum heat exchanger and the second vacuum heat exchanger undergo a heat absorption process, so that the moisture in the material is condensed after being absorbed by the heat exchange plates to avoid frosting on the material. Finally, the material is condensed, dehydrated and dried, thereby effectively preventing water vapor from frosting on the material and improving the drying efficiency.

[0016] (2) Through the vacuum cooling drying method, there is no need to heat and dry the materials. It is suitable for materials with low melting points. It is also suitable for drying objects that are easily spoiled by heating. The entire drying process is carried out in a vacuum environment. It is also suitable for drying objects containing toxic and harmful substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional front view of the structure of the present invention;

[0018] Figure 2 Schematic diagram of the gas flow path of the filtration mechanism in the present invention Figure 1 in the present invention;

[0019] Figure 3 Schematic diagram of the enlarged structure at position A Figure 1 in the present invention;

[0020] Figure 4 Overall schematic diagram of the structure of the drain pipe Figure 1 in the present invention;

[0021] Figure 5 Side view schematic diagram of the structure of the first vacuum heat exchanger Figure 1 in the present invention;

[0022] In the figure: 1, vacuum box body; 2, material conveyor belt; 3, partition board; 4, angle iron flange; 5, sealing strip; 6, first vacuum heat exchanger; 7, first water receiving tray; 8, second vacuum heat exchanger; 9, second water receiving tray; 10, vacuum pumping pipeline; 11, first vacuum detection device; 12, drain pipe; 121, main water pipe; 122, first branch water pipe; 123, second branch water pipe; 13, electric pre-vacuum valve; 14, electric air inlet valve; 15, filter; 16, second vacuum detection device; 17, filtration mechanism; 171, filtration box body; 172, air inlet pipe; 173, filter element; 174, exhaust pipe; 175, drain valve; 18, electric vacuum valve; 19, vacuum pump; 20, shock absorption sleeve; 21, through pipe; 22, defrosting pipeline; 23, fan; 24, electric defrosting valve; 25, heater. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-5 , an embodiment provided by the present invention: a vacuum condensation dryer applicable to low-melting-point anti-decomposition objects, including a vacuum box body 1 and a material conveyor belt 2. The material conveyor belt 2 is uniformly installed inside the vacuum box body 1. Both ends of the material conveyor belt 2 penetrate through the front and rear of the vacuum box body 1, and electric sealing doors are movably installed at the connection between the vacuum box body 1 and the material conveyor belt 2. After the material enters the vacuum box body 1 through the material conveyor belt 2, the electric sealing door can close the feed port to make the vacuum box body 1 in a closed state. This is the prior art and will not be elaborated here too much.

[0025] Inside the vacuum chamber 1, a partition 3 is fixed. The partition 3 divides the interior of the vacuum chamber 1 into two independent chambers. An angle iron flange 4 is fixed on the outer surface of the partition 3. At one end of the two angle iron flanges 4 facing away from the material conveyor belt 2, a first vacuum heat exchanger 6 and a second vacuum heat exchanger 8 are respectively fixed by bolts and nuts for vacuum heat exchange. A through pipe 21 is fixed on both the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8. The number of the through pipes 21 is two. Both ends of the first through pipe 21 are respectively connected and fixed to the input ends of the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 by bolts. Both ends of the second through pipe 21 are respectively connected and fixed to the output ends of the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 by bolts. A defrosting pipe 22 is fixed at the center of the first through pipe 21. A first vacuum detection device 11, an electric defrosting valve 24 and a heater 25 are respectively fixed on the outer surface of the defrosting pipe 22 from right to left. The first vacuum detection device 11 is used to monitor the vacuum degree inside the vacuum chamber 1. One end of the heater 25 facing away from the electric defrosting valve 24 is fixed with a blower 23. By the operation of the blower 23 and the heater 25, the blower 23 blows the air heated by the heater 25 into the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 for defrosting. The electric defrosting valve 24 can be a two-way solenoid valve of standard specification, and the electric defrosting valve 24 is used to control the left-right communication of the defrosting pipe 22;

[0026] A vacuum pipe 10 is fixed at the center of the second central through pipe 21, and an electric pre-vacuum valve 13, an electric air intake valve 14 and a second vacuum detection device 16 are fixed on the outer surface of the vacuum pipe 10 from right to left, and a filter 15 is fixed on the electric air intake valve 14. The electric pre-vacuum valve 13 controls the connection between the vacuum pipe 10 and the left chamber of the vacuum box 1. The electric pre-vacuum valve 13 and the electric air intake valve 14 can both be two-way solenoid valves of standard specifications. One end of the electric pre-vacuum valve 13 is connected to the vacuum pipe 10, and the other end is connected to a filtering device to dry water vapor, dust, etc. to prevent water vapor from being sucked into the electric pre-vacuum valve 13 and accumulating, causing problems such as dripping. One end of the electric air intake valve 14 is connected to the vacuum pipe 10, and the other end is connected to the filter 15. The electric air intake valve 14 controls the connection between the outside and the inside of the vacuum box 1. When the electric air intake valve 14 is opened, air can be supplied to the vacuum box 1. In addition to the vacuum state inside the vacuum box 1, the filter 15 can dry the external air, purify the external air and filter dust. A filter mechanism 17 is fixed to the end of the vacuum pipe 10 away from the second vacuum detection device 16. The top of the filter mechanism 17 is connected to an electric vacuum valve 18 through a conduit. The end of the electric vacuum valve 18 away from the filter mechanism 17 is connected to a vacuum pump 19 through a conduit. The electric vacuum valve 18 can be a two-way solenoid valve of standard specifications. The electric vacuum valve 18 is used to control the connection switch between the filter mechanism 17 and the vacuum pump 19. The vacuum box 1 is evacuated by the operation of the vacuum pump 19. The first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 are connected in series through the middle pipe 21, so that the vacuum pump 19 can evacuate the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 at the same time. Similarly, the heater 25 can defrost the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 at the same time.

[0027] Further, such as Figure 1 As shown, two support plates are fixed on the left side of the partition 3, and the first water receiving pan 7 and the second water receiving pan 9 are fixed to the bottom ends of the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 respectively. The first water receiving pan 7 is fixed on the first support plate, and the second water receiving pan 9 is fixed on the second support plate. After the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 are defrosted, the water flows are discharged into the first water receiving pan 7 and the second water receiving pan 9 respectively.

[0028] Further, such as Figure 1 and Figure 4As shown, a drain pipe 12 is fixed to the bottom of the first water receiving tray 7. The drain pipe 12 includes a main water pipe 121, a first branch water pipe 122, and a second branch water pipe 123. There are two branches on the right side of the main water pipe 121. The two branches are respectively connected to the first water receiving tray 7 and the second water receiving tray 9 through the first branch water pipe 122 and the second branch water pipe 123. The top end of the first branch water pipe 122 passes through the first support plate and is fixedly connected to the bottom of the first water receiving tray 7. The top end of the second branch water pipe 123 passes through the second support plate and is fixedly connected to the bottom of the second water receiving tray 9. The left side of the bottom of the main water pipe 121 is in an "S" shape and is fixedly penetrated on the vacuum box body 1. The "S" shape structure design of the bottom of the main water pipe 121 enables some water to always remain in the "U" shaped pipe at the bottom of the main water pipe 121, maintaining the seal of the main water pipe 121. The defrosting water of the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 is discharged into the first water receiving tray 7 and the second water receiving tray 9 from the bottom, and then discharged from the vacuum box body 1 through the drain pipe 12.

[0029] Further, as Figure 1 and Figure 3 shown, sealing strips 5 are clamped between the angle iron flanges 4 and the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 respectively. The sealing strips 5 are made of rubber material and are used to improve the sealing performance between the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 and the angle iron flanges 4.

[0030] Further, as Figure 1 shown, the bottom end of the filter 15 is fixedly connected to the top end of the electric intake valve 14 by thread, which is conducive to disassembly and replacement.

[0031] Further, as Figure 2 shown, the filtering mechanism 17 includes a filtering box body 171. An exhaust pipe 174 is inserted and fixed at the top end of the filtering box body 171. An intake pipe 172 and a drain valve 175 are fixedly arranged on the side surface of the filtering box body 171 in a vertical distribution. And the evacuation pipe 10 is communicated with the inner cavity of the filtering box body 171 through the intake pipe 172. The exhaust pipe 174 is communicated with the electric vacuum valve 18 through a conduit. Filter elements 173 are uniformly fixed inside the filtering box body 171. The gas evacuated by the vacuum pump 19 enters the filtering box body 171 through the intake pipe 172. The gas flows to the lowest end inside the filter elements 173, fully filtering out the dust and water vapor in the evacuated gas, and then enters the vacuum pump 19 through the exhaust pipe 174 and is discharged, avoiding the dust and water vapor from affecting the service life of the vacuum pump 19.

[0032] Further, as Figure 1As shown in the figure, a shock-absorbing sleeve 20 is fixed to the output end of the vacuum pump 19 by bolts. One end of the shock-absorbing sleeve 20 facing away from the vacuum pump 19 is connected to the electric vacuum valve 18 through a conduit. Both ends of the shock-absorbing sleeve 20 are of flange structure and are respectively used for connecting to the output end of the vacuum pump 19 and the conduit. The middle of the shock-absorbing sleeve 20 is spherical and is made of elastic rubber material to reduce the impact of the vibration of the vacuum pump 19 during operation on the conduit and the electric vacuum valve 18.

[0033] Working principle: First, pre-pump the vacuum. After the material enters the vacuum chamber 1 through the material conveyor belt 2, turn on the vacuum pump 19, the electric vacuum valve 18, and the electric pre-vacuum valve 13, and turn off the drain valve 175, the electric intake valve 14, the electric defrosting valve 24, the heater 25, and the fan 23. The vacuum pump 19 extracts the air in the vacuum chamber 1 through the filtering mechanism 17, the vacuum extraction pipeline 10, and the electric pre-vacuum valve 13. After the first vacuum detection device 11 reaches the set pressure, turn off the electric pre-vacuum valve 13, and the vacuum pump 19 continues to extract the air inside the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 to make them vacuum.

[0034] Then, condense and dry. The second vacuum detection device 16 controls the start and stop of the vacuum pump 19 to maintain the vacuum degree inside the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8. The heat exchange fins inside the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 undergo an endothermic process, so that the moisture in the material is condensed after being absorbed by the heat exchange fins, and finally the material is condensed, dehydrated, and dried.

[0035] After the material is dehydrated and dried, turn off the filter 15 and the vacuum pump 19, and turn on the electric intake valve 14 and the electric pre-vacuum valve 13. The atmosphere enters the first vacuum heat exchanger 6, the second vacuum heat exchanger 8, and the vacuum chamber 1 through the electric intake valve 14.

[0036] Finally, defrost and drain. After the atmosphere enters the vacuum chamber 1, the material can be conveyed to the outside through the material conveyor belt 2. In addition, during the condensation and drying process, frost will form on the surface of the heat exchange fins inside the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8. When defrosting, turn on the fan 23, the heater 25, and the electric defrosting valve 24. The fan 23 blows the normal-temperature air into the defrosting pipeline 22, which is heated by the heater 25 and enters the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 through the electric defrosting valve 24, and is discharged from the electric intake valve 14 on the vacuum extraction pipeline 10. The first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 are heated, and the frost on the surface of the heat exchange fins inside the first vacuum heat exchanger 6 and the second vacuum heat exchanger 8 is dissolved and drips into the first water receiving tray 7 and the second water receiving tray 9, and finally is discharged from the vacuum chamber 1 through the drain pipe 12.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any respect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A vacuum condensation dryer applicable to low-melting-point anti-decomposition objects, comprising a vacuum box body (1) and a material conveyor belt (2). The material conveyor belt (2) is uniformly installed inside the vacuum box body (1). Both ends of the material conveyor belt (2) penetrate through the front and back of the vacuum box body (1), and electric sealing doors are movably installed at the connection between the vacuum box body (1) and the material conveyor belt (2). It is characterized in that: A partition plate (3) is fixedly installed inside the vacuum chamber (1). The partition plate (3) divides the interior of the vacuum chamber (1) into two independent chambers. An angle iron flange (4) is fixedly installed on the outer surface of the partition plate (3). One end of each of the two angle iron flanges (4) facing away from the material conveyor belt (2) is respectively fixedly installed with a first vacuum heat exchanger (6) and a second vacuum heat exchanger (8) through bolts and nuts. Medium-through pipes (21) are fixedly installed on both the first vacuum heat exchanger (6) and the second vacuum heat exchanger (8). The number of the medium-through pipes (21) is two. Two ends of the first medium-through pipe (21) are respectively connected and fixed to the input ends of the first vacuum heat exchanger (6) and the second vacuum heat exchanger (8) through bolts. Two ends of the second medium-through pipe (21) are respectively connected and fixed to the output ends of the first vacuum heat exchanger (6) and the second vacuum heat exchanger (8) through bolts. A defrosting pipeline (22) is fixedly installed at the center of the first medium-through pipe (21). A first vacuum detection device (11), an electric defrosting valve (24), and a heater (25) are respectively fixedly installed on the outer surface of the defrosting pipeline (22) from right to left. A blower (23) is fixedly installed at one end of the heater (25) facing away from the electric defrosting valve (24). A vacuum pumping pipeline (10) is fixedly installed at the center of the second medium-through pipe (21). An electric pre-vacuum valve (13), an electric intake valve (14), and a second vacuum detection device (16) are respectively fixedly installed on the outer surface of the vacuum pumping pipeline (10) from right to left. A filter (15) is fixedly installed on the electric intake valve (14). A filtering mechanism (17) is fixedly installed at one end of the vacuum pumping pipeline (10) facing away from the second vacuum detection device (16). The top of the filtering mechanism (17) is connected to an electric vacuum valve (18) through a conduit. One end of the electric vacuum valve (18) facing away from the filtering mechanism (17) is connected to a vacuum pump (19) through a conduit.

2. The vacuum condensation dryer for low-melting-point anti-decomposition objects according to claim 1, wherein: Two support plates are fixedly installed on the left side of the partition plate (3).

3. The vacuum condensation dryer for low melting point anti-decomposition objects according to claim 2, characterized in that: A first water receiving tray (7) and a second water receiving tray (9) are respectively fixedly installed at the bottom of the first vacuum heat exchanger (6) and the second vacuum heat exchanger (8). The first water receiving tray (7) is fixedly installed on the first support plate, and the second water receiving tray (9) is fixedly installed on the second support plate.

4. The vacuum condensation dryer for low melting point anti-decomposition objects according to claim 3, characterized in that: A drain pipe (12) is fixedly installed at the bottom of the first water receiving tray (7). The drain pipe (12) includes a main water pipe (121), a first branch water pipe (122), and a second branch water pipe (123). There are two branches on the right side of the main water pipe (121). The two branches are respectively connected to the first water receiving tray (7) and the second water receiving tray (9) through the first branch water pipe (122) and the second branch water pipe (123). The top of the first branch water pipe (122) passes through the first support plate and is connected and fixed to the bottom of the first water receiving tray (7). The top of the second branch water pipe (123) passes through the second support plate and is connected and fixed to the bottom of the second water receiving tray (9). The left side at the bottom of the main water pipe (121) is in an "S" shape and penetrates and is fixedly installed on the vacuum chamber (1).

5. A vacuum condensation dryer applicable to low-melting-point anti-decomposition objects according to claim 1, characterized in that: A sealing strip (5) is clamped between the angle iron flange (4) and the first vacuum heat exchanger (6) and the second vacuum heat exchanger (8) respectively.

6. The vacuum condensation dryer applicable to low-melting-point anti-decomposition objects according to claim 1, wherein: The bottom end of the filter (15) is fixedly connected to the top end of the electric intake valve (14) by threaded connection.

7. A vacuum condensation dryer applicable to low-melting-point anti-decomposition objects according to claim 1, characterized in that: The filtering mechanism (17) includes a filtering box body (171). An exhaust pipe (174) is fixedly inserted at the top end of the filtering box body (171). An intake pipe (172) and a drain valve (175) are fixedly arranged on the side surface of the filtering box body (171) in a vertical distribution. The vacuum extraction pipe (10) is communicated with the inner cavity of the filtering box body (171) through the intake pipe (172). The exhaust pipe (174) is communicated with the electric vacuum valve (18) through a conduit. Filter elements (173) are uniformly fixed inside the filtering box body (171).

8. A vacuum condensation dryer applicable to low-melting-point anti-decomposition objects according to claim 1, characterized in that: A shock-absorbing sleeve (20) is fixedly connected to the output end of the vacuum pump (19) by bolts. One end of the shock-absorbing sleeve (20) away from the vacuum pump (19) is connected to the electric vacuum valve (18) through a conduit.

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