Double-cone vacuum drying device

Abstract

The utility model relates to the related technical field of vacuum drying, in particular to a double-cone vacuum drying device which comprises a supporting frame and a double-cone drying tank rotationally installed on the supporting frame and further comprises an exhaust pipe fixedly installed on the supporting frame. One end of the exhaust pipe extends into the double-cone drying tank and is rotationally connected with the double-cone drying tank, the end, extending into the double-cone drying tank, of the exhaust pipe is of a U-like structure, the air inlet end of the exhaust pipe is vertically downward, and a stainless steel filter screen is installed at the air inlet end of the exhaust pipe; when the stainless steel filter screen is cleaned and the double-cone dryer needs to be cleaned, the tank body does not need to be cooled, the filter bag does not need to be disassembled, water can be directly added into the tank body, the stainless steel filter screen of the vacuum interface is washed by a water gun, and the stainless steel filter screen can be fully cleaned by repeating for two or three times. Operators do not need to enter the tank body belonging to a limited space from beginning to end for operation, so that the labor intensity is low, and the operation is safe.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum drying, in particular to a double-cone vacuum drying device. Background Technique

[0002] The double-cone vacuum drying device is a commonly used solid material drying device in the production process of the pharmaceutical and chemical industries. In order to prevent cross-contamination between different materials, or the quality change or discoloration of the same material due to long-term heating, which is likely to affect the quality of the dried materials in the next batch. Therefore, thorough cleaning after the use of the double-cone vacuum drying device is a routine operation in the production process. Especially in the production process of drugs, preventing cross-contamination is a very prominent requirement, so this cleaning operation is extremely important.

[0003] In the existing double-cone vacuum drying device, the vacuum tube is usually directly connected to the tank body, and a filter cloth bag is installed at the opening of the double-cone tank body to prevent the dried materials from being sucked away by the vacuum. When cleaning the device, the cloth bag must be removed for cleaning, and both the disassembly and assembly need to be manually operated. This operation can only be carried out when the temperature of the tank body drops to near room temperature. In the continuous production process, this cooling process takes 2 - 3 hours, resulting in a very time-consuming and laborious cleaning process for the entire device, which greatly affects the production efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a double-cone vacuum drying device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A double-cone vacuum drying device includes a support frame and a double-cone drying tank rotatably installed on the support frame;

[0007] It further includes an air extraction pipe fixedly installed on the support frame. One end of the air extraction pipe extends into the double-cone drying tank and is rotatably connected to the double-cone drying tank. The end of the air extraction pipe extending into the double-cone drying tank is arranged in a U-shaped structure, and the air inlet end of the air extraction pipe is vertically downward. A stainless steel filter screen is installed at the air inlet end of the air extraction pipe.

[0008] For the double-cone vacuum drying device as described above: feeding ports and discharging ports are correspondingly arranged at the tops of the two cones of the double-cone drying tank, and blocking valves are respectively installed on the feeding ports and the discharging ports.

[0009] For the double-cone vacuum drying device as described above: rotary joints are symmetrically arranged on the double-cone drying tank. The rotary joints are rotatably installed on the support frame and are driven to rotate by a driving member installed on the support frame.

[0010] The double-cone vacuum drying device described above: The driving member includes a motor and a speed reducer fixedly installed on the support frame. The output shaft of the motor is rotationally connected to the driving shaft of the speed reducer through a belt, and the driving shaft is rotationally connected to one of the rotary joints through a bevel gear set.

[0011] The double-cone vacuum drying device described above: One end of the air extraction pipe away from the double-cone drying tank is connected with a buffer tank, and the air extraction pipe extends into the buffer tank. A check valve is arranged on the air extraction pipe between the double-cone drying tank and the buffer tank.

[0012] The double-cone vacuum drying device described above: An air outlet pipe is arranged at the top end of the buffer tank.

[0013] The double-cone vacuum drying device described above: A steam inlet pipe is rotationally connected to one end of the double-cone drying tank away from the air extraction pipe. A condensate outlet pipe is inserted inside the steam inlet pipe. The steam inlet pipe and the condensate outlet pipe are respectively communicated with the inlet and outlet of the heating flow channel in the double-cone drying tank.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] During the continuous production process, when the double-cone dryer needs to be cleaned, it is not necessary to cool down the tank body, nor to remove the filter bag. Water can be directly added into the tank body, and the stainless steel mesh filter of the vacuum interface can be rinsed with a water gun. Repeating two or three times can clean it thoroughly. It is convenient and efficient. When the temperature of the tank body is higher, the solubility of the material is greater and the cleaning is more thorough. During the cleaning process, it can be appropriately heated, and finally the washing liquid is discharged, and then vacuum-dried after heating, which greatly improves the production efficiency;

[0016] During the cleaning process of the double-cone vacuum dryer, the operator does not need to enter the tank body, which belongs to a confined space, from beginning to end. The labor intensity is low and the operation is safe;

[0017] During the use of the device, since the position of the vacuum port in the body is relatively high, it can be kept from being covered by the material, which is beneficial to the water vapor being evacuated by vacuum and improves the drying efficiency;

[0018] A buffer tank and a check valve are designed in the vacuum pipeline to form a double insurance, ensuring that it can avoid the return of liquid water and certain pollutants in the vacuum pipeline to the tank body under abnormal conditions such as sudden power failure or vacuum system failure, causing pollution to the product to be dried. This is particularly important in the field of drug production. Description of the Drawings

[0019] Figure 1 It is a structural schematic diagram of the double-cone vacuum drying device;

[0020] Figure 2It is a schematic elevation structure diagram of a double-cone drying tank and a support frame in a double-cone vacuum drying device.

[0021] In the figure: 1. Double-cone drying tank; 101. Feed inlet; 102. Discharge outlet; 2. Suction pipe; 3. Stainless steel filter screen; 4. Check valve; 5. Buffer tank; 5. Outlet pipe; 6. Steam inlet pipe; 7. Rotary joint; 8. Condensate outlet pipe; 9. Support frame; 10. Motor; 11. Reducer. Detailed implementation manners

[0022] The following will refer to the drawings to describe in detail various exemplary embodiments, features, and aspects of the present application. The same reference numerals in the drawings denote elements with the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0023] The special term "exemplary" here means "serving as an example, an embodiment, or illustrative". Any embodiment described as "exemplary" here does not have to be construed as superior to or better than other embodiments.

[0024] In addition, for better illustration of the present application, numerous specific details are given in the following detailed embodiments. Those skilled in the art should understand that the present application can be implemented without some specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0025] Please refer to Figures 1 to 2 , in the embodiment of the present utility model, a double-cone vacuum drying device includes a double-cone drying tank 1, a suction pipe 2, a support frame 9, and a stainless steel filter screen 3.

[0026] Specifically as follows, please refer to Figure 1 and Figure 2 , including;

[0027] A support frame 9 and a double-cone drying tank 1 rotatably installed on the support frame 9;

[0028] It further includes a suction pipe 2 fixedly installed on the support frame 9. One end of the suction pipe 2 extends into the double-cone drying tank 1 and is rotatably connected to the double-cone drying tank 1. The end of the suction pipe 2 extending into the double-cone drying tank 1 is arranged in a U-shaped structure. And the air inlet end of the suction pipe 2 is vertically downward. A stainless steel filter screen 3 is installed at the air inlet end of the suction pipe 2. Specifically, the stainless steel filter screen 3 is mainly used to facilitate the cleaning work and prevent rust from affecting the materials in the double-cone drying tank 1.

[0029] Specifically, in this embodiment, the double-cone vacuum drying device described in the present utility model is adopted. When in use, when the air in the double-cone drying tank 1 enters the suction pipe 2 through the inlet end of the suction pipe 2, under the action of the stainless steel filter screen 3, the tiny materials mixed in the air will stay on the surface of the stainless steel filter screen 3 to prevent the dried materials from being sucked away by the vacuum. In order to solve the problem of easy cross-contamination between different materials or between different batches of the same material, during continuous production, when the double-cone drying tank 1 needs to be cleaned, it is not necessary to cool down the tank body, nor to remove the stainless steel filter screen 3. Water can be directly added into the tank body, and the stainless steel filter screen 3 can be rinsed with a water gun. Repeating two or three times can clean it thoroughly, which is convenient and efficient. When the temperature of the tank body is higher, the solubility of the materials is greater and the cleaning is more thorough. During the cleaning process, it can be appropriately heated, and finally the washing liquid is discharged, and then vacuum-dried after heating, which greatly improves the production efficiency.

[0030] Among them, rinsing the stainless steel filter screen 3 with a water gun enables the operator not to enter the tank body, which belongs to a confined space, for operation from beginning to end, with low labor intensity and safe operation.

[0031] It should be noted that; the end of the suction pipe 2 extending into the double-cone drying tank 1 is arranged in a U-shaped structure, and the inlet end of the suction pipe 2 is vertically downward. During the use of the device, due to the relatively high position of the inlet end of the suction pipe 2 in the tank body, it can be kept from being covered by materials, which is conducive to the vacuum extraction of water vapor and improves the drying efficiency.

[0032] Please refer to Figure 1 , corresponding feed inlets 101 and discharge outlets 102 are provided at the tops of the two cones of the double-cone drying tank 1. A vacuum feed pipe is installed at the feed inlet 101, and the vacuum feed pipe is used to connect to a vacuum feeding machine. Of course, a control valve for controlling the conduction or blockage of the vacuum feed pipe is also provided at the vacuum feed pipe, and block valves are respectively installed on the discharge outlets 102.

[0033] When drying materials, the materials are conveyed into the double-cone drying tank 1 through the feed inlet 101. At this time, the block valves on the discharge outlets 102 are in a blocked state. After the loading is completed, the block valve on the feed inlet 101 is controlled to be blocked to prevent the materials in the double-cone drying tank 1 from falling out of the double-cone drying tank 1 before being dried. After the materials are dried, the block valve on the discharge outlet 102 is controlled to be opened, so that the materials in the double-cone drying tank 1 are discharged to realize the drying work of the materials.

[0034] Preferably, rotary joints 7 are symmetrically arranged on the double-cone drying tank 1. The rotary joints 7 are rotatably installed on the support frame 9 and are driven to rotate by a driving member installed on the support frame 9.

[0035] Please refer to Figure 1, the driving member includes a motor 10 and a speed reducer 11 fixedly installed on the support frame 9. The output shaft of the motor 10 is rotationally connected to the driving shaft of the speed reducer 11 through a belt, and the driving shaft is rotationally connected to one of the rotary joints 7 through a bevel gear set.

[0036] Furthermore, after the material is conveyed into the double-cone drying tank 1, the motor 10 is started to work. Under the drive of the belt, the transmission ratio between the output shaft of the motor 10 and the driving shaft of the speed reducer 11 is changed to reduce the rotational speed of the driving shaft. When the driving shaft rotates, it drives the rotary joint 7 to rotate synchronously, so that the double-cone drying tank 1 can rotate relative to the support frame 9, thereby enabling the material to continuously move up and down and inside and outside, thus accelerating the drying speed of the material, improving the drying efficiency, and achieving the purpose of uniform drying.

[0037] Please refer to Figure 1 , one end of the air extraction pipe 2 away from the double-cone drying tank 1 is connected to a buffer tank 5, and the air extraction pipe 2 extends into the buffer tank 5. A check valve 4 is provided on the air extraction pipe 2 between the double-cone drying tank 1 and the buffer tank 5.

[0038] Preferably, an air outlet pipe 501 is provided at the top of the buffer tank 5.

[0039] To elaborate, before the vacuum pipeline enters the double-cone drying tank 1, the gas extracted from the double-cone drying tank 1 will enter the liquid in the buffer tank 5 and then be extracted through the air outlet pipe 501. Among them, the check valve 4 is mainly provided to prevent the liquid in the air extraction pipe 2 from returning to the double-cone drying tank 1, ensuring that the liquid water and certain pollutants in the vacuum pipeline can be avoided from returning to the double-cone drying tank 1 under abnormal conditions and causing pollution to the product to be dried.

[0040] Preferably, a steam inlet pipe 6 is rotationally connected to one end of the double-cone drying tank 1 away from the air extraction pipe 2. A condensate outlet pipe 8 is inserted inside the steam inlet pipe 6. The steam inlet pipe 6 and the condensate outlet pipe 8 are respectively communicated with the inlet and outlet of the heating flow channel in the double-cone drying tank 1.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, 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. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-cone vacuum drying device, comprising a support frame (9) and a double-cone drying tank (1) rotatably mounted on the support frame (9), characterized in that ； It further includes an air extraction pipe (2) fixedly installed on the support frame (9). One end of the air extraction pipe (2) extends into the double-cone drying tank (1) and is rotatably connected to the double-cone drying tank (1). The end of the air extraction pipe (2) extending into the double-cone drying tank (1) is arranged in a U-shaped structure, and the air inlet end of the air extraction pipe (2) is vertically downward. A stainless steel filter screen (3) is installed at the air inlet end of the air extraction pipe (2).

2. The double-cone vacuum drying device according to claim 1, characterized in that, Feeding ports (101) and discharging ports (102) are correspondingly arranged at the tops of the two cones of the double-cone drying tank (1), and blocking valves are respectively installed on the feeding ports (101) and the discharging ports (102).

3. A double-cone vacuum drying device according to claim 1, characterized in that, Rotary joints (7) are symmetrically arranged on the double-cone drying tank (1). The rotary joints (7) are rotatably installed on the support frame (9) and are driven to rotate by a driving member installed on the support frame (9).

4. A double-cone vacuum drying device according to claim 3, characterized in that, The driving member includes a motor (10) and a reducer (11) fixedly installed on the support frame (9). The output shaft of the motor (10) is rotationally connected to the driving shaft of the reducer (11) through a belt, and the driving shaft is rotationally connected to one of the rotary joints (7) through a bevel gear set.

5. A double-cone vacuum drying device according to claim 1, characterized in that, One end of the air extraction pipe (2) away from the double-cone drying tank (1) is connected to a buffer tank (5), and the air extraction pipe (2) extends into the buffer tank (5). A check valve (4) is arranged on the air extraction pipe (2) between the double-cone drying tank (1) and the buffer tank (5).

6. A double-cone vacuum drying device according to claim 5, characterized in that, An air outlet pipe (501) is arranged at the top end of the buffer tank (5).

7. A double-cone vacuum drying device according to claim 1, characterized in that, A steam inlet pipe (6) is rotatably connected to one end of the double-cone drying tank (1) away from the air extraction pipe (2). A condensate outlet pipe (8) is inserted inside the steam inlet pipe (6). The steam inlet pipe (6) and the condensate outlet pipe (8) are respectively communicated with the inlet and outlet of the heating flow channel in the double-cone drying tank (1).

Images