Low-temperature vacuum drying oven

Abstract

The utility model discloses a low-temperature vacuum drying oven, which relates to the technical field of traditional Chinese medicine drying equipment and comprises a drying oven. An inner container is embedded in the inner side of the drying box, a rotating frame is arranged in the inner container, a rotating shaft of the rotating frame is connected with a mounted bearing installed on a sliding frame in a matched mode, and then the sliding frame is connected with an inner container sliding rail installed on the inner side of the inner container in a sliding mode. A plurality of bearing frames are arranged in the middle of the rotating frame, and the bearing frames are arranged in an annular array mode along the central axis of the rotating frame. Heat is increased on the inner side of the heating cavity and conducted to the inner container, the multiple bearing frames rotate on the rotating frame along the inserting rods of the bearing frames, traditional Chinese medicinal materials can be conveniently laid flat through the bearing frames and rotate along with the rotating frame, the traditional Chinese medicinal materials can be heated more evenly, the inner container can be vacuumized through the positive pressure pumping pipe, a negative pressure environment is created, the boiling point of water is reduced, and the water boiling point is reduced. Therefore, the drying speed is increased and the drying efficiency is improved.

Description

Technical Field

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

[0002] Low-temperature vacuum drying oven is a kind of equipment specially used for drying materials. It creates negative pressure environment by vacuuming, lowers the boiling point of water, and allows the water to evaporate at a lower temperature. Functionally, it can achieve efficient drying under relatively low temperature conditions, avoiding the adverse effects of high temperature on some heat-sensitive and easily oxidizable materials (including some traditional Chinese medicines), and maintaining the original properties, composition and activity of the materials to the greatest extent. This drying oven is widely used in many fields such as medicine, food, and chemical industry, especially for some materials that require high drying conditions, such as precious traditional Chinese medicines, biological products, etc.

[0003] There are some limitations in the traditional Chinese medicine drying technology. For example, ordinary hot air drying may cause excessive temperature and destroy the effective ingredients and active substances of Chinese medicine; some drying methods may be inefficient and take a long time to dry, affecting the production progress; for this reason, we provide a low-temperature vacuum drying oven, which uses a positive air pressure pipe and a vacuum pump to evacuate the inner tank to create a negative pressure environment, reduce the boiling point of water, and thus speed up the drying speed. A rotating rack is set on the inner side, and the insert rod of the rotating rack is connected to the carrier rack, so that Chinese medicinal materials can be laid flat on the carrier rack, such as roots, stems, leaves and other Chinese medicinal materials, and as the rotating rack rotates, the Chinese medicinal materials on the carrier rack are heated evenly, improving the drying efficiency and quality, and effectively making up for the above problems. Utility Model Content

[0004] The utility model aims to provide a low-temperature vacuum drying oven, which uses a positive air pressure extraction pipe to cooperate with a vacuum pump to evacuate an inner tank to create a negative pressure environment, reduce the boiling point of water, and thus accelerate the drying speed. A rotating frame is arranged on the inner side, and a support frame is sleeved on the insertion rod of the rotating frame, so that Chinese medicinal materials, such as roots, stems, leaves and other Chinese medicinal materials, can be laid flat on the support frame, and as the rotating frame rotates, the Chinese medicinal materials on the support frame are evenly heated, thereby improving the drying efficiency and quality, so as to solve the problems raised in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low-temperature vacuum drying oven comprises a drying oven; an inner liner is embedded inside the drying oven, a rotating frame is arranged inside the inner liner, and the rotating shaft of the rotating frame is matched and connected with a bearing with a seat installed on a sliding frame, and secondly, the sliding frame is slidably connected with an inner liner slide rail installed on the inner side of the inner liner; a plurality of bearing frames are arranged in the middle of the rotating frame, and the plurality of bearing frames are arranged in a circular array along the central axis of the rotating frame, and the two ends of the bearing frames are respectively sleeved on the outer sides of corresponding insertion rods, and secondly, the insertion rods are welded to the rotating frame; a heating chamber is arranged between the drying oven and the inner liner, and a positive vacuum pressure pipe is arranged in the inner liner.

[0007] As a further technical solution of the utility model, a sealing cover is provided on one side of the inner tank opening, and a positive air pressure extraction pipe is installed on the sealing cover, and the end of the positive air pressure extraction pipe away from the inner tank is connected to the vacuum pump through a delivery pipe; the sealing cover is also connected to a pressure gauge, and the sealing cover is locked to the inner tank by snap-locking.

[0008] As a further technical solution of the utility model, the sealing cover is fixed to the movable arm by bolts, and the movable arm is movably connected to the mounting seat by a rotating shaft. Secondly, the mounting seat is fixed to the drying box by bolts.

[0009] As a further technical solution of the utility model, one side of the drying box is connected with a steam input pipe, and the other end of the steam input pipe is connected with a steam generator; the other side of the drying box is connected with a pressure relief valve.

[0010] As a further technical solution of the utility model, a plug connector is welded on one side of the rotating shaft of the rotating frame, the plug connector is plugged into the plug-in cavity of the socket sleeve, and the socket sleeve is cooperatively connected with the bearing with a seat installed on the inner tank; the socket sleeve is also cooperatively connected with the output shaft of the reducer, the reducer is cooperatively connected with the drive motor, and the reducer is fixed to the drying box by bolts.

[0011] As a further technical solution of the utility model, an opening for facilitating the insertion of a locking plug is provided above one end of the inner tank slide rail close to the sealing cover, and the locking plug has a T-shaped cross section.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model increases the heat inside the heating chamber and conducts it to the inner pot. Multiple carriers will rotate on the rotating rack along their respective insertion rods. The carriers can facilitate the flattening of Chinese medicinal materials and make them heated more evenly as the rotating rack rotates. The positive vacuum pressure pipe can vacuum the inner pot to create a negative pressure environment, reduce the boiling point of water, and thus speed up the drying speed;

[0014] 2. In the utility model, the steam generated by the steam generator is transported to the heating chamber through the steam input pipe, and the heat brought by the steam can be quickly transferred to heat the inner pot, thereby reducing the gradual heating time and improving the drying efficiency;

[0015] 3. In the utility model, after the sliding frame enters the inner tank along the inner tank slide rail, the rotating frame is rotated to make the plug connector dock with the socket tube. The reducer cooperates with the driving motor to drive the socket tube to rotate, thereby driving the plug connector to provide power for the rotation of the rotating frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 This utility model Figure 1 Schematic diagram from another perspective.

[0018] Figure 3 This utility model Figure 1 main view.

[0019] Figure 4 This utility model Figure 3 Sectional view at AA.

[0020] Figure 5 This utility model Figure 3 A partial enlarged view of point B.

[0021] Figure 6 This utility model Figure 1 Schematic diagram of the internal structure.

[0022] Figure 7 This utility model Figure 6 A partial enlarged view of point C.

[0023] Figure 8 This utility model Figure 6 A partial enlarged view of point D.

[0024] In the figure: 1-drying box, 2-inner tank, 3-steam input pipe, 4-pressure relief valve, 5-movable arm, 6-sealing cover, 7-positive air pressure extraction pipe, 8-pressure gauge, 9-clasp, 10-inner tank slide rail, 11-locking plug plate, 12-sliding frame, 13-rotating frame, 14-insertion rod, 15-carrying frame, 16-plug connector, 17-sleeve tube, 18-reducer, 19-drive motor, 20-heating chamber, 21-mounting seat. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-8 In the embodiment of the utility model, a low-temperature vacuum drying oven comprises a drying oven 1; an inner liner 2 is embedded in the inner side of the drying oven 1, a rotating frame 13 is arranged inside the inner liner 2, and the rotating shaft of the rotating frame 13 is matched and connected with the bearing with a seat installed on the sliding frame 12, and secondly, the sliding frame 12 is slidably connected with the inner liner slide rail 10 installed on the inner side of the inner liner 2; a plurality of bearing frames 15 are arranged in the middle of the rotating frame 13, and the plurality of bearing frames 15 are arranged in a circular array along the central axis of the rotating frame 13, and the two ends of the bearing frames 15 are respectively sleeved on the outer side of the corresponding insertion rod 14, and secondly, the insertion rod 14 is welded on the rotating frame 13; a heating chamber 20 is arranged between the drying oven 1 and the inner liner 2, and a positive vacuum pumping pipe 7 is arranged in the inner liner 2.

[0027] By adopting the above technical solution, the heat is increased inside the heating chamber 20 and conducted to the inner tank 2. Multiple carriers 15 will rotate on the rotating frame 13 along their respective insertion rods 14. The carriers 15 can facilitate the flattening of Chinese medicinal materials and rotate with the rotating frame 13 to make them heated more evenly. The positive vacuum pressure pipe 7 can vacuum the inner tank 2 to create a negative pressure environment, reduce the boiling point of water, and thus speed up the drying speed. The sliding frame 12 drives the rotating frame 13 to slide along the inner tank slide rail 10, which is convenient for loading and unloading materials onto the carrier 15.

[0028] In this embodiment, a sealing cover 6 is provided on one side of the opening of the inner liner 2, and a positive air pressure relief pipe 7 is installed on the sealing cover 6, and the end of the positive air pressure relief pipe 7 away from the inner liner 2 is connected to the vacuum pump through a delivery pipe; a pressure gauge 8 is also connected to the sealing cover 6, and the sealing cover 6 is locked with the inner liner 2 by a snap lock 9.

[0029] Furthermore, the sealing cover 6 is fixed to the movable arm 5 by bolts, and the movable arm 5 is movably connected to the mounting seat 21 by a rotating shaft. Secondly, the mounting seat 21 is fixed to the drying box 1 by bolts.

[0030] By adopting the above technical solution, after the sealing cover 6 is locked with the inner liner 2 by the latch 9, the vacuum pump cooperates with the delivery pipe to draw vacuum from the inner liner 2 through the positive air pressure extraction pipe 7, the pressure gauge 8 is convenient for checking the pressure inside, and the mounting seat 21 is convenient for the installation of the movable arm 5, which can facilitate the support of the sealing cover 6.

[0031] In this embodiment, a steam input pipe 3 is connected to one side of the drying box 1, and the other end of the steam input pipe 3 is connected to the steam generator; a pressure relief valve 4 is connected to the other side of the drying box 1.

[0032] By adopting the above technical solution, the steam generated by the steam generator is transported to the heating chamber 20 through the steam input pipe 3, and the heat brought by the steam can be quickly transferred to heat the inner pot 2, thereby reducing the gradual heating time and improving the drying efficiency.

[0033] In this embodiment, a plug connector 16 is welded to one side of the rotating shaft of the rotating frame 13, and the plug connector 16 is plugged into the plug-in cavity of the socket sleeve 17, and the socket sleeve 17 is cooperated and connected with the bearing seat installed on the inner tank 2; the socket sleeve 17 is also cooperated and connected with the output shaft of the reducer 18, and the reducer 18 is cooperated and connected to the drive motor 19, and the reducer 18 is fixed to the drying box 1 by bolts.

[0034] By adopting the above technical solution, after the sliding frame 12 enters the inner liner 2 along the inner liner slide rail 10, the rotating frame 13 is rotated so that the plug connector 16 is docked with the socket tube 17, and the reducer 18 cooperates with the driving motor 19 to drive the socket tube 17 to rotate, thereby driving the plug connector 16 and providing power for the rotation of the rotating frame 13.

[0035] In this embodiment, an opening is provided above one end of the inner tank slide rail 10 close to the sealing cover 6 for facilitating the insertion of a locking plug plate 11 , and the locking plug plate 11 is provided in a T-shaped cross section.

[0036] By adopting the above technical solution, after the sliding frame 12 enters the inner container 2 along the inner container slide rail 10, the locking plug plate 11 is inserted into the opening of the inner container slide rail 10, which can block the sliding frame 12 and prevent it from moving.

[0037] The working principle of the utility model is as follows: when in use, after the sliding frame 12 enters the inner tank 2 along the inner tank slide rail 10, the locking plug plate 11 is plugged into the opening of the inner tank slide rail 10, which can block the sliding frame 12 and prevent it from moving; after the sealing cover 6 is locked with the inner tank 2 through the latch 9, the vacuum pump cooperates with the delivery pipe to extract vacuum from the positive air suction pipe 7 in the inner tank 2, the pressure gauge 8 is convenient for checking the pressure inside, the mounting seat 21 is convenient for the installation of the movable arm 5, and can facilitate the support of the sealing cover 6; the steam generated by the steam generator is transported to the heating chamber 20 through the steam input pipe 3, and the heat brought by the steam can be quickly conducted to heat the inner tank 2, thereby reducing the gradual heating time and improving the drying efficiency; when the sliding frame 12 moves along the inner tank slide rail 1 After 0 enters the inner tank 2, the rotating frame 13 is rotated to make the plug connector 16 dock with the sleeve tube 17. The reducer 18 cooperates with the driving motor 19 to drive the sleeve tube 17 to rotate, thereby driving the plug connector 16 to provide power for the rotation of the rotating frame 13; the heat is increased on the inner side of the heating chamber 20 and transmitted to the inner tank 2. Multiple carriers 15 will rotate on the rotating frame 13 along their respective plug rods 14. The carriers 15 can facilitate the flattening of Chinese medicinal materials, and as the rotating frame 13 rotates, it can make it more evenly heated. The positive vacuum pressure pipe 7 can vacuum the inner tank 2 to create a negative pressure environment, reduce the boiling point of water, and thus speed up the drying speed. The sliding frame 12 drives the rotating frame 13 to slide along the inner tank slide rail 10, which is convenient for loading and unloading materials onto the carrier 15.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0039] 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 oven, characterized in that: The invention comprises a drying box (1); an inner liner (2) is embedded inside the drying box (1); a rotating frame (13) is arranged inside the inner liner (2); and a rotating shaft of the rotating frame (13) is matched and connected with a bearing seat installed on a sliding frame (12); secondly, the sliding frame (12) is slidably connected with an inner liner slide rail (10) installed on the inner side of the inner liner (2); a plurality of bearing frames (15) are arranged in the middle of the rotating frame (13); and the plurality of bearing frames (15) are arranged in a circular array along the central axis of the rotating frame (13); the two ends of the bearing frames (15) are respectively sleeved on the outer side of the corresponding insertion rod (14); secondly, the insertion rod (14) is welded to the rotating frame (13); a heating chamber (20) is arranged between the drying box (1) and the inner liner (2); and a positive air extraction and pressure pipe (7) is arranged in the inner liner (2).

2. A low temperature vacuum drying oven according to claim 1, characterized in that: A sealing cover (6) is provided on one side of the opening of the inner container (2), and a positive vacuum pressure relief pipe (7) is installed on the sealing cover (6), and the end of the positive vacuum pressure relief pipe (7) away from the inner container (2) is connected to the vacuum pump through a delivery pipe; a pressure gauge (8) is also connected to the sealing cover (6), and the sealing cover (6) is locked with the inner container (2) through a snap lock (9).

3. A low temperature vacuum drying oven according to claim 2, characterized in that: The sealing cover (6) is fixed to the movable arm (5) by means of bolts, and the movable arm (5) is movably connected to the mounting seat (21) by means of a rotating shaft. Furthermore, the mounting seat (21) is fixed to the drying box (1) by means of bolts.

4. A low temperature vacuum drying oven according to claim 1, characterized in that: One side of the drying box (1) is cooperatively connected to a steam input pipe (3), and the other end of the steam input pipe (3) is cooperatively connected to a steam generator; the other side of the drying box (1) is cooperatively connected to a pressure relief valve (4).

5. A low temperature vacuum drying oven according to claim 1, characterized in that: A plug connector (16) is welded to one side of the rotating shaft of the rotating frame (13), and the plug connector (16) is plugged into the plug-in cavity of the sleeve (17), and the sleeve (17) is cooperatively connected to a bearing seat installed on the inner tank (2); the sleeve (17) is also cooperatively connected to the output shaft of a reducer (18), and the reducer (18) is cooperatively connected to a driving motor (19), and the reducer (18) is fixed to the drying box (1) by bolts.

6. A low temperature vacuum drying oven according to claim 1, characterized in that: An opening is provided above one end of the inner container slide rail (10) close to the sealing cover (6) to facilitate the insertion of a locking plug plate (11), and the locking plug plate (11) is arranged in a T-shaped cross section.

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