Y-shaped double-cavity switchable vacuum feeding system

Abstract

The utility model discloses a Y type double cavity type switchable vacuum charging system, including vacuum pump unit, vacuum tank, buffer tank, reaction kettle and vacuum charging control system, vacuum pump unit and vacuum tank are connected through pipeline, reaction kettle feed inlet on the top of reaction kettle is fixedly connected with Y type buffer stock bin through fifth pneumatic butterfly valve, and the vacuum pump unit is connected with the buffer stock bin through the fifth pneumatic butterfly valve. And the upper part of the Y-shaped buffer bin is fixedly connected with a first vacuum charging machine and a second vacuum charging machine through a third pneumatic butterfly valve and a fourth pneumatic butterfly valve respectively. By arranging the two vacuum charging machines smaller than the existing vacuum charging machine in volume, the Y-shaped buffer stock bin and the corresponding pneumatic butterfly valve, double-cavity circulating switching continuous feeding is realized, and the feeding efficiency of the vacuum charging machine is basically the same as that of the existing single-cavity vacuum charging machine, so that the feeding efficiency of the vacuum charging machine is greatly improved in the feeding process. The reaction kettle is always isolated from the two vacuum charging machines, so that harmful gas in the reaction kettle is prevented from eroding the vacuum charging machines and materials in the vacuum charging machines.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical production and manufacturing, in particular to a Y-shaped double-chamber switchable vacuum feeding system. Background Technique

[0002] A vacuum feeding system is a device that uses a vacuum to create a negative pressure environment and transfers powder, granules or other solid materials from one container to another through pipeline transportation. In the field of pharmaceutical production and manufacturing, the existing vacuum feeding systems have the following defects in actual application:

[0003] 1. The existing vacuum feeder is directly connected to the reaction kettle. When there are harmful volatile gases in the reaction kettle, not only the materials in the vacuum feeder will be contaminated, but also the vacuum feeder will be damaged.

[0004] 2. The existing vacuum feeder adopts a single-chamber feeding method, which is only suitable for single-material feeding and cannot feed two materials simultaneously. The production efficiency is not high and the applicability is not strong.

[0005] 3. The existing single-chamber feeding vacuum feeder is large in volume, inconvenient to install and prone to interference with the reaction kettle equipment. Moreover, when the vacuum feeder fails, it must be shut down for maintenance, affecting the production efficiency. Content of the Utility Model

[0006] The purpose of the utility model is to provide a Y-shaped double-chamber switchable vacuum feeding system to solve at least one of the problems raised in the background technique.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] A Y-shaped double-chamber switchable vacuum feeding system includes a vacuum pump unit, a vacuum tank, a buffer tank, a reaction kettle and a vacuum feeding control system. The vacuum pump unit is connected to the vacuum tank through a pipeline. The reaction kettle inlet at the top of the reaction kettle is fixedly connected to a Y-shaped buffer bin through a fifth pneumatic butterfly valve. The upper part of the Y-shaped buffer bin is fixedly connected to a first vacuum feeder and a second vacuum feeder through a third pneumatic butterfly valve and a fourth pneumatic butterfly valve respectively. The vacuum tank is connected to the vacuum generators of the first vacuum feeder and the second vacuum feeder through pipelines. The feeding end of the first vacuum feeder is fixedly connected to a first feeding pipe through a first pneumatic butterfly valve. The first feeding pipe is connected to the buffer tank through a pipeline. The feeding end of the second vacuum feeder is fixedly connected to a second feeding pipe through a second pneumatic butterfly valve. The first feeding pipe is connected to the second feeding pipe through a pipeline. The vacuum feeding control system can control the opening and closing of the first pneumatic butterfly valve, the second pneumatic butterfly valve, the third pneumatic butterfly valve, the fourth pneumatic butterfly valve and the fifth pneumatic butterfly valve.

[0009] Further, the Y-shaped buffer silo includes a first material chamber, a second material chamber, and a blanking chamber. The first material chamber, the second material chamber, and the blanking chamber are fixedly connected in a Y shape and communicate with each other. The fifth pneumatic butterfly valve is fixedly arranged between the blanking chamber and the feed inlet of the reaction kettle. The third pneumatic butterfly valve is fixedly arranged between the first material chamber and the first vacuum feeder. The fourth pneumatic butterfly valve is fixedly arranged between the second material chamber and the second vacuum feeder.

[0010] Further, a branch pipe is fixedly connected to the pipe body of the first feed pipe, and the branch pipe is communicated with the second feed pipe through a pipeline.

[0011] Further, the first pneumatic butterfly valve, the second pneumatic butterfly valve, the third pneumatic butterfly valve, the fourth pneumatic butterfly valve, and the fifth pneumatic butterfly valve are respectively connected to an external air source through air circuits, and electromagnetic valves are arranged in each air circuit. The vacuum feeding control system is electrically connected to the electromagnetic valves, and the air circuits are switched on or off by controlling the opening and closing of the electromagnetic valves to control the opening and closing of each pneumatic butterfly valve.

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

[0013] 1. By setting two vacuum feeders with smaller volumes than the existing ones, a Y-shaped buffer silo, and corresponding pneumatic butterfly valves, the present utility model realizes double-chamber cyclic switching continuous feeding. While maintaining basically the same feeding efficiency as the existing single-chamber vacuum feeder, during the feeding process, the reaction kettle is always isolated from the two vacuum feeders, preventing harmful gases in the reaction kettle from eroding the vacuum feeder and the materials therein.

[0014] 2. The present utility model can realize functions such as double-chamber cyclic switching continuous feeding, double-chamber and double-material simultaneous feeding, and single-chamber feeding, expanding the scope of application. At the same time, the double-chamber and double-material simultaneous feeding method can effectively improve production efficiency.

[0015] 3. Since the present utility model adopts two smaller vacuum feeders and a Y-shaped buffer silo, the installation orientation can be flexibly adjusted to avoid interference with the reaction kettle equipment. Moreover, when a certain vacuum feeder fails, only the pneumatic butterfly valve at the end of the faulty vacuum feeder needs to be closed, and only the other vacuum feeder is used for feeding, so as not to affect normal production. At the same time, the faulty vacuum feeder can be removed for timely repair. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is Figure 1 a partial enlarged view at A in

[0018] In the figure: 1 - vacuum pump unit, 2 - vacuum tank, 3 - buffer tank, 4 - first vacuum feeder, 5 - second vacuum feeder, 6 - first feed pipe, 601 - branch pipe, 7 - second feed pipe, 8 - first pneumatic butterfly valve, 9 - second pneumatic butterfly valve, 10 - third pneumatic butterfly valve, 11 - fourth pneumatic butterfly valve, 12 - Y-shaped buffer silo, 1201 - first material chamber, 1202 - second material chamber, 1203 - blanking chamber, 13 - fifth pneumatic butterfly valve, 14 - reaction kettle, 1401 - reaction kettle feed inlet. Detailed implementation mode

[0019] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Please refer to Figure 1 - Figure 2 , an embodiment provided by the present utility model:

[0021] A Y-shaped double-chamber switchable vacuum feeding system, comprising a vacuum pump unit 1, a vacuum tank 2, a buffer tank 3, a reaction kettle 14 and a vacuum feeding control system. The vacuum pump unit 1 is connected to the vacuum tank 2 through a pipeline. The reaction kettle feed inlet 1401 at the top of the reaction kettle 14 is fixedly connected to a Y-shaped buffer silo 12 through a fifth pneumatic butterfly valve 13. The upper part of the Y-shaped buffer silo 12 is fixedly connected to a first vacuum feeder 4 and a second vacuum feeder 5 through a third pneumatic butterfly valve 10 and a fourth pneumatic butterfly valve 11 respectively. The vacuum tank 2 is connected to the vacuum generators of the first vacuum feeder 4 and the second vacuum feeder 5 through pipelines. The feed end of the first vacuum feeder 4 is fixedly connected to a first feed pipe 6 through a first pneumatic butterfly valve 8. The first feed pipe 6 is connected to the buffer tank 3 through a pipeline. The first pneumatic butterfly valve 8 is used to connect or cut off the passage between the buffer tank 3 and the first vacuum feeder 4. The feed end of the second vacuum feeder 5 is fixedly connected to a second feed pipe 7 through a second pneumatic butterfly valve 9. The first feed pipe 6 is connected to the second feed pipe 7 through a pipeline. The second pneumatic butterfly valve 9 is used to connect or cut off the passage between the buffer tank 3 and the second vacuum feeder 5. The vacuum feeding control system can control the opening and closing of the first pneumatic butterfly valve 8, the second pneumatic butterfly valve 9, the third pneumatic butterfly valve 10, the fourth pneumatic butterfly valve 11 and the fifth pneumatic butterfly valve 13.

[0022] Among them, the Y-shaped buffer bin 12 includes a first bin 1201, a second bin 1202 and a blanking bin 1203. The first bin 1201, the second bin 1202 and the blanking bin 1203 are welded in a Y shape and communicate with each other. The fifth pneumatic butterfly valve 13 is fixedly installed between the blanking bin 1203 and the reactor feed inlet 1401 by bolts, and is used to connect or cut off the passage between the Y-shaped buffer bin 12 and the reactor feed inlet 1401. The third pneumatic butterfly valve 10 is fixedly installed between the first bin 1201 and the first vacuum feeder 4 by bolts, and is used to connect or cut off the passage between the first vacuum feeder 4 and the Y-shaped buffer bin 12. The fourth pneumatic butterfly valve 11 is fixedly installed between the second bin 1202 and the second vacuum feeder 5 by bolts, and is used to connect or cut off the passage between the second vacuum feeder 5 and the Y-shaped buffer bin 12.

[0023] Among them, a branch pipe 601 is welded to the pipe body of the first feed pipe 6. The branch pipe 601 is connected to the second feed pipe 7 through a pipeline, so that the material in the buffer tank 3 can enter the second vacuum feeder 5 through the branch pipe 601 and the second feed pipe 7 under the action of the second vacuum feeder 5.

[0024] Among them, the first pneumatic butterfly valve 8, the second pneumatic butterfly valve 9, the third pneumatic butterfly valve 10, the fourth pneumatic butterfly valve 11, and the fifth pneumatic butterfly valve 13 are respectively connected to an external air source through air circuits, and solenoid valves are provided in each air circuit. The vacuum feeding control system is electrically connected to the solenoid valves, and the air circuits are connected or disconnected by controlling the opening and closing of the solenoid valves to control the opening and closing of each pneumatic butterfly valve.

[0025] The working principle of the present utility model: First, calculate according to the pipe inner diameter, material flow rate, hopper volume of the vacuum feeder, and volume of the Y-shaped buffer bin 12, or preset the action sequence and action interval time of the first pneumatic butterfly valve 8, the second pneumatic butterfly valve 9, the third pneumatic butterfly valve 10, the fourth pneumatic butterfly valve 11, and the fifth pneumatic butterfly valve 13 in the vacuum feeding control system by the experimental method. In the initial state, the first pneumatic butterfly valve 8, the second pneumatic butterfly valve 9, the third pneumatic butterfly valve 10, the fourth pneumatic butterfly valve 11, and the fifth pneumatic butterfly valve 13 are all in the closed state.

[0026] According to the actual production situation, the present utility model can realize working conditions such as double-chamber cyclic switching continuous feeding, double-chamber double-material simultaneous feeding, and single-chamber feeding, expanding the scope of application.

[0027] I. Double-chamber cyclic switching continuous feeding working condition:

[0028] When the first vacuum feeder 4 extracts materials from the buffer tank 1 by the power of the vacuum source provided by the vacuum pump unit 1, the first pneumatic butterfly valve 8 opens, and the materials enter the first vacuum feeder 4 from the buffer tank 1 through the first feed pipe 6. When the hopper of the first vacuum feeder 4 (the hopper volumes of the first vacuum feeder 4 and the second vacuum feeder 5 are 50L, and the hopper volume of the existing single-chamber vacuum feeder is 100L) is full or nearly full, the first pneumatic butterfly valve 8 closes. At the same time, the second pneumatic butterfly valve 9 and the third pneumatic butterfly valve 10 open, and the materials in the buffer tank 1 enter the second vacuum feeder 5 through the branch pipe 601 and the second feed pipe 7. The materials in the hopper of the first vacuum feeder 4 fall into the Y-shaped buffer bin 12 from the first material chamber 1201. After the materials are emptied, the third pneumatic butterfly valve 10 closes, and the fifth pneumatic butterfly valve 13 opens. The materials in the Y-shaped buffer bin 12 enter the reaction kettle 14 through the reaction kettle feed port 1401. After the materials are emptied, the fifth pneumatic butterfly valve 13 closes. When the hopper of the second vacuum feeder 5 is full or nearly full, the second pneumatic butterfly valve 9 closes. At the same time, the first pneumatic butterfly valve 8 and the fourth pneumatic butterfly valve 11 open, and the materials in the buffer tank 1 enter the first vacuum feeder 4 through the first feed pipe 6. The materials in the hopper of the second vacuum feeder 5 fall into the Y-shaped buffer bin 12 from the second material chamber 1202. After the materials are emptied, the fourth pneumatic butterfly valve 11 closes, and the fifth pneumatic butterfly valve 13 opens. The materials in the Y-shaped buffer bin 12 enter the reaction kettle 14 through the reaction kettle feed port 1401. After the materials are emptied, the fifth pneumatic butterfly valve 13 closes. In this way, it cycles repeatedly to achieve continuous feeding with cyclic switching. While maintaining basically the same feeding efficiency as the existing single-chamber vacuum feeder, during the feeding process, the reaction kettle 14 is always isolated from the first vacuum feeder 4 and the second vacuum feeder 5, preventing the harmful gases in the reaction kettle 14 from eroding the vacuum feeder and the materials therein.

[0029] II. Double-chamber and double-material simultaneous feeding condition:

[0030] In the case that there are no harmful gases in the reaction kettle 14, close the branch pipe 601, and connect the second feed pipe 7 to another material buffer tank, then the function of double-chamber and double-material simultaneous feeding can be achieved, improving the production efficiency.

[0031] III. Single-chamber feeding condition:

[0032] When a certain vacuum feeder fails, assuming the second vacuum feeder 5 fails, only need to normally close the second pneumatic butterfly valve 9 and the fourth pneumatic butterfly valve 11, and only use the first vacuum feeder 4 for feeding, so as not to affect normal production. At the same time, the second vacuum feeder 5 can also be removed for timely maintenance.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A Y-shaped double-chamber switchable vacuum feeding system, comprising a vacuum pump unit (1), a vacuum tank (2), a buffer tank (3), a reaction kettle (14) and a vacuum feeding control system. The vacuum pump unit (1) is connected to the vacuum tank (2) through a pipeline, and is characterized in that: The reactor feed inlet (1401) at the top of the reactor (14) is fixedly connected to a Y-shaped buffer silo (12) through a fifth pneumatic butterfly valve (13). The upper part of the Y-shaped buffer silo (12) is fixedly connected to a first vacuum feeder (4) and a second vacuum feeder (5) through a third pneumatic butterfly valve (10) and a fourth pneumatic butterfly valve (11) respectively. The vacuum tank (2) is connected to the vacuum generators of the first vacuum feeder (4) and the second vacuum feeder (5) through pipelines. The feed end of the first vacuum feeder (4) is fixedly connected to a first feed pipe (6) through a first pneumatic butterfly valve (8). The first feed pipe (6) is connected to a buffer tank (3) through a pipeline. The feed end of the second vacuum feeder (5) is fixedly connected to a second feed pipe (7) through a second pneumatic butterfly valve (9). The first feed pipe (6) is connected to the second feed pipe (7) through a pipeline. The vacuum feeding control system can control the opening and closing of the first pneumatic butterfly valve (8), the second pneumatic butterfly valve (9), the third pneumatic butterfly valve (10), the fourth pneumatic butterfly valve (11), and the fifth pneumatic butterfly valve (13).

2. The Y-shaped double-chamber switchable vacuum feeding system according to claim 1, wherein: The Y-shaped buffer silo (12) includes a first material chamber (1201), a second material chamber (1202), and a blanking chamber (1203). The first material chamber (1201), the second material chamber (1202), and the blanking chamber (1203) are fixedly connected in a Y shape and are interconnected. The fifth pneumatic butterfly valve (13) is fixedly arranged between the blanking chamber (1203) and the reactor feed inlet (1401). The third pneumatic butterfly valve (10) is fixedly arranged between the first material chamber (1201) and the first vacuum feeder (4). The fourth pneumatic butterfly valve (11) is fixedly arranged between the second material chamber (1202) and the second vacuum feeder (5).

3. The Y-shaped double-chamber switchable vacuum feeding system according to claim 1, characterized in that: A branch pipe (601) is fixedly connected to the body of the first feed pipe (6). The branch pipe (601) is connected to the second feed pipe (7) through a pipeline.

4. A Y-shaped double-chamber switchable vacuum feeding system according to claim 1, characterized in that: The first pneumatic butterfly valve (8), the second pneumatic butterfly valve (9), the third pneumatic butterfly valve (10), the fourth pneumatic butterfly valve (11), and the fifth pneumatic butterfly valve (13) are respectively connected to an external air source through air circuits, and solenoid valves are arranged in each air circuit. The vacuum feeding control system is electrically connected to the solenoid valves and controls the opening and closing of the air circuits by controlling the opening and closing of the solenoid valves to control the opening and closing of each pneumatic butterfly valve.

Images