Low-temperature vacuum drying device

Abstract

The utility model provides a low-temperature vacuum drying device which comprises a drying box, a heating plate, a drying box, an air exhauster and a filter box, and further comprises a placing cylinder and a negative pressure tank, the drying box is of a cylindrical structure, a front sealing plate and a rear sealing plate are distributed and fixedly connected to the two ends of the drying box, and a guide sleeve extending into the drying box is fixedly connected to the middle of the front sealing plate; the placing cylinder is sleeved with the guide sleeve and is in axial sliding sealing fit with the guide sleeve, the end, located in the drying box, of the placing cylinder is a blind end, and the other end of the placing cylinder is open and fixedly connected with a plugging disc used in cooperation with the guide sleeve through a connecting rod. Through the arrangement of the drying box, the placing barrel, the guide sleeve, the plugging disc, the ventilation window and the flow guide hole, when the placing barrel is opened, the drying box is still in a negative pressure state, and when the placing barrel is closed, the drying box can directly provide negative pressure suction force for the placing barrel, that is, when traditional Chinese medicine is taken and placed, the negative pressure in the drying box cannot be greatly lost; the device has the advantage of energy conservation.

Description

Technical Field

[0001] The utility model relates to the technical field of traditional Chinese medicine drying and processing, in particular to a low-temperature vacuum drying device. Background Art

[0002] When processing traditional Chinese medicine, in order to increase the storage time of traditional Chinese medicine, it is necessary to dry the traditional Chinese medicine, usually using a low-temperature vacuum drying device for drying. When the existing low-temperature vacuum drying device is used, the air directly extracted and discharged during the drying process contains traditional Chinese medicine components, and the direct discharge causes a waste of resources.

[0003] At present, the utility model with the publication number CN217357815U proposes a low-temperature vacuum drying device for Chinese medicine processing, including a sealed box, an absorption plate and a movable plate, wherein the sealed box is provided with a drying plate, and the sealed box is provided with a box door, the upper end of the sealed box is provided with an exhaust pipe, the exhaust pipe is provided with an air pump, and the exhaust pipe is provided with an air collecting box, the air collecting box is provided with an absorption plate, and the bottom end of the air collecting box is provided with a groove corresponding to the absorption plate, and the absorption plate is engaged with the groove. When the utility model is used, when the absorption plate needs to be replaced, the sealed box cover is opened, and then the two pull blocks and the pull rod are pushed to move closer to each other, the pull rod drives the connecting rod to move closer to each other, and the connecting rod drives the lower part of the movable plate to move closer to each other, thereby separating the card block from the card slot and driving the absorption plate to move upward, so that the absorption plate can be taken out for replacement. When installing, the absorption plate can be engaged with the groove, which is simple to operate and convenient for installation and removal of the absorption plate.

[0004] However, the above-mentioned prior art still has shortcomings when in use: the airtight box needs to be re-exhausted each time it is opened and closed, which means that the vacuum pump needs to be started frequently and then the vacuum operation needs to be carried out for a long time, resulting in high power consumption and low drying efficiency.

[0005] To this end, the utility model provides a low-temperature vacuum drying device. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a low-temperature vacuum drying device to solve the problems raised in the above background technology. The utility model has the advantages of energy saving and improved drying efficiency.

[0007] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a low-temperature vacuum drying device, including a drying box, a heating plate, a drying box, an exhaust fan and a filter box, and also including a placement tube and a negative pressure tank. The drying box is a cylindrical structure, and the two ends of the drying box are fixedly connected with a front sealing plate and a rear sealing plate. The middle part of the front sealing plate is fixedly connected with a guide sleeve extending into the drying box. The placement tube sleeve is arranged in the guide sleeve and is axially sliding and sealing. The end of the placement tube located in the drying box is a blind end, and the other end of the placement tube is open and fixedly connected with a sealing disk used in conjunction with the guide sleeve through a connecting rod. A ventilation window located in the drying box is provided at the top of the outer peripheral wall of the guide sleeve, and a guide hole used in conjunction with the ventilation window is provided at the top of the placement tube. The heating plate is fixedly arranged in the placement tube.

[0008] Furthermore, the inner fixing sleeve of the guide sleeve is provided with a sealing rubber sleeve close to the opening.

[0009] Furthermore, the bottom of the drying box is fixedly connected to a base via a support plate, the base is fixedly connected to an oil cylinder, one end of the placement tube located on the drying box is fixedly connected to a connecting shaft that passes through the rear wall of the drying box, one end of the output shaft of the oil cylinder is fixedly connected to a cantilever, and one end of the cantilever is fixedly connected to one end of the connecting shaft.

[0010] Furthermore, the sealing rubber sleeve is a T-shaped structure, and the outer peripheral wall of the sealing disk and the inner wall of the sealing rubber sleeve are sealed and matched.

[0011] Furthermore, a wire channel is provided in the connecting shaft, and a wire electrically connected to the heating plate is embedded in the wire channel.

[0012] Furthermore, a coaxial transmission shaft passes through and is slidably connected to the connecting shaft, and one end of the transmission shaft is fixedly connected to a push plate located in the placement cylinder.

[0013] Furthermore, an inserting hole is formed on the outer wall of the transmission shaft, and a latch is inserted into the inserting hole.

[0014] Furthermore, the negative pressure tank, the vacuum pump, the filter box and the drying box are connected in series, and the filter box is located between the negative pressure tank and the drying box.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model provides a drying box, a placement tube, a guide sleeve, a sealing plate, a ventilation window and a guide hole, so that when the placement tube is opened, the drying box is still in a negative pressure state, and when the placement tube is closed, the drying box can directly provide negative pressure suction to the placement tube, that is to say, when taking and placing Chinese medicine, a large amount of negative pressure in the drying box will not be lost, which has the advantage of energy saving.

[0017] 2. The utility model provides a push plate above the heating plate, and the push plate can directly push the heated and dried Chinese medicine away from the heating plate, which has the advantage of convenient material unloading and will not cause accidental scalding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the low-temperature vacuum drying device of the utility model;

[0019] Figure 2 It is a schematic diagram of the placement cylinder and the push plate of the low-temperature vacuum drying device of the utility model after being exploded and deployed;

[0020] Figure 3 It is a cross-sectional view of the cooperation between the conductor and the connecting shaft of the low-temperature vacuum drying device of the utility model;

[0021] In the figure: 1. drying box; 2. placing cylinder; 3. front sealing plate; 4. rear sealing plate; 5. guide sleeve; 6. connecting rod; 7. sealing plate; 8. ventilation window; 9. diversion hole; 101. vacuum pump; 102. heating plate; 103. sealing rubber sleeve; 104. base; 105. oil cylinder; 1051. cantilever; 106. connecting shaft; 1061. wire channel; 107. wire; 108. transmission shaft; 1081. push plate; 1082. socket; 109. latch; 110. filter box; 120. negative pressure tank. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figures 1 to 3 The utility model provides a technical solution: a low-temperature vacuum drying device, comprising a drying box 1, a heating plate 102, the drying box 1, an exhaust fan 101, a filter box 110 and a negative pressure tank 120, wherein the negative pressure tank 120, the exhaust fan 101, the filter box 110 and the drying box 1 are connected in series, the filter box 110 is located between the negative pressure tank 120 and the drying box 1, the exhaust fan 101 exhausts air from the negative pressure tank 120, the negative pressure tank 120 is in a negative pressure state, the negative pressure tank 120 exhausts air from the drying box 1, and the water vapor in the drying box 1 is filtered through the filter box 110 and then enters the negative pressure tank 120, and the above-mentioned filter box 110 adopts the prior art in the patent literature mentioned in the background technology.

[0024] In the present technical solution, it also includes a placement tube 2, which is a cylindrical structure and is an instrument for placing traditional Chinese medicine. The drying box 1 is also a cylindrical structure. The two ends of the drying box 1 are fixedly connected with a front sealing plate 3 and a rear sealing plate 4. The middle part of the front sealing plate 3 is fixedly connected with a guide sleeve 5 extending into the drying box 1. The placement tube 2 is sleeved in the guide sleeve 5 and is axially slidingly sealed. Specifically, a sealing rubber sleeve 103 close to the mouth is fixedly provided in the guide sleeve 5.

[0025] One end of the placement tube 2 located inside the drying box 1 is a blind end, and the other end of the placement tube 2 is open and fixedly connected to a sealing disk 7 used in conjunction with the guide sleeve 5 through a connecting rod 6. Specifically, the sealing rubber sleeve 103 is a T-shaped structure, and the outer peripheral wall of the sealing disk 7 and the inner wall of the sealing rubber sleeve 103 are sealed together. That is to say, when the sealing disk 7 enters the sealing rubber sleeve 103, the mouth of the guide sleeve 5 is sealed, and the entire drying box 1 is in a closed state.

[0026] A ventilation window 8 located in the drying box 1 is provided at the top of the outer peripheral wall of the guide sleeve 5, and a guide hole 9 used in conjunction with the ventilation window 8 is provided at the top of the placement tube 2. When the sealing disk 7 blocks the guide sleeve 5, the ventilation window 8 and the guide hole 9 are opposite to each other, and the inner cavity of the placement tube 2 and the drying box 1 are connected. When the sealing disk 7 is separated from the guide sleeve 5, the guide hole 9 is sealed by the sealing rubber sleeve 103, and the placement tube 2 and the drying box 1 are in a disconnected state.

[0027] The heating plate 102 is fixedly disposed in the placing tube 2. The heating plate 102 adopts the structure in the prior art and will not be described in detail in this embodiment. The heating plate 102 is used to place Chinese medicine.

[0028] Furthermore, the bottom of the drying box 1 is fixedly connected to the base 104 through a support plate, and the base 104 is fixedly connected to the oil cylinder 105. One end of the placement tube 2 located on the drying box 1 is fixedly connected to a connecting shaft 106 that penetrates the rear wall of the drying box 1. A positioning sleeve is welded to the rear wall of the placement tube 2 and is sleeved on the outside of the connecting shaft 106. A sealing ring is sleeved in the positioning sleeve. One end of the output shaft of the oil cylinder 105 is fixedly connected to a cantilever 1051, and one end of the cantilever 1051 is fixedly connected to one end of the connecting shaft 106. The oil cylinder 105 provides traction to the connecting shaft 106 through the cantilever 1051.

[0029] In this embodiment, a wire channel 1061 is defined in the connection shaft 106 , and a wire 107 electrically connected to the heating plate 102 is embedded in the wire channel 1061 .

[0030] In this embodiment, a coaxial transmission shaft 108 passes through and is slidably connected to the connecting shaft 106. Specifically, a guide hole that seals and cooperates with the transmission shaft 108 can be opened in the connecting shaft 106. One end of the transmission shaft 108 is fixedly connected to a push plate 1081 located in the placement tube 2. In the process of pushing the transmission shaft 108, the push plate 1081 can push the traditional Chinese medicine on the heating plate 102 outward, making discharge more convenient.

[0031] An insert hole 1082 is provided on the outer wall of the transmission shaft 108 , and a latch 109 is inserted into the insert hole 1082 . The function of this arrangement is to limit the transmission shaft 108 .

[0032] When using this device, first start the vacuum pump 101, negative pressure is formed in the negative pressure tank 120, and the gas in the drying box 1 enters the negative pressure tank 120 through the filter box 110, and the drying box 1 is in a negative pressure state. Then control the placement tube 2 to slide outward, and the blocking plate 7 moves outward from the guide sleeve 5. At this time, the placement tube 2 is in an open state, and the guide hole 9 is blocked by the sealing rubber sleeve 103. Put the Chinese medicine into the placement tube 2, control the placement tube 2 to slide into the drying box 1, and the blocking plate 7 enters the sealing rubber sleeve 103 to block the guide sleeve 5. When the guide hole 9 and the ventilation window 8 are opposite, the drying box 1 applies negative pressure to the Chinese medicine in the placement tube 2, and then the heating plate 102 is powered to achieve vacuum drying.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A low-temperature vacuum drying device, comprising a drying box (1), a heating plate (102), an exhaust fan (101) and a filter box (110), characterized in that: It also includes a placement tube (2) and a negative pressure tank (120), the drying box (1) is a cylindrical structure, the two ends of the drying box (1) are fixedly connected with a front sealing plate (3) and a rear sealing plate (4), the middle part of the front sealing plate (3) is fixedly connected with a guide sleeve (5) extending into the drying box (1), the placement tube (2) is sleeved in the guide sleeve (5) and is axially sliding and sealingly matched, the end of the placement tube (2) located in the drying box (1) is a blind end, the other end of the placement tube (2) is open and fixedly connected with a sealing disk (7) used in conjunction with the guide sleeve (5) through a connecting rod (6), the top of the outer peripheral wall of the guide sleeve (5) is provided with a ventilation window (8) located in the drying box (1), the top of the placement tube (2) is provided with a guide hole (9) used in conjunction with the ventilation window (8), and the heating plate (102) is fixedly arranged in the placement tube (2).

2. The low-temperature vacuum drying device according to claim 1, characterized in that: The inner fixed sleeve of the guide sleeve (5) is provided with a sealing rubber sleeve (103) close to the opening.

3. The low-temperature vacuum drying device according to claim 2, characterized in that: The bottom of the drying box (1) is fixedly connected to a base (104) via a support plate, and an oil cylinder (105) is fixedly connected to the base (104). One end of the placement tube (2) located at the drying box (1) is fixedly connected to a connecting shaft (106) penetrating the rear wall of the drying box (1), and one end of the output shaft of the oil cylinder (105) is fixedly connected to a cantilever (1051), and one end of the cantilever (1051) is fixedly connected to one end of the connecting shaft (106).

4. The low-temperature vacuum drying device according to claim 2, characterized in that: The sealing rubber sleeve (103) is of a T-shaped structure, and the outer peripheral wall of the sealing disk (7) and the inner wall of the sealing rubber sleeve (103) are in sealing cooperation.

5. The low-temperature vacuum drying device according to claim 3, characterized in that: A wire channel (1061) is provided in the connecting shaft (106), and a wire (107) electrically connected to the heating plate (102) is embedded in the wire channel (1061).

6. The low-temperature vacuum drying device according to claim 3, characterized in that: A coaxial transmission shaft (108) passes through and is slidably connected to the connecting shaft (106), and one end of the transmission shaft (108) is fixedly connected to a push plate (1081) located in the placement cylinder (2).

7. The low-temperature vacuum drying device according to claim 6, characterized in that: The outer wall of the transmission shaft (108) is provided with an insertion hole (1082), and a latch (109) is inserted into the insertion hole (1082).

8. The low-temperature vacuum drying device according to claim 1, characterized in that: The negative pressure tank (120), the air extractor (101), the filter box (110) and the drying box (1) are connected in series, and the filter box (110) is located between the negative pressure tank (120) and the drying box (1).

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