Alarm device for dry granulation feeder

Abstract

The application relates to a dry granulation feeding machine alarm device, which comprises a vacuum feeding machine, a vacuum generator, a back-blowing valve, a pressure detection sensor, a vacuum breaking valve, a feeding valve, a recovery valve, a first storage tank, a dry granulation machine, a vibrating screen and a second storage tank. The dry granulation feeding machine alarm device is simple in structure, can realize real-time detection of the change of the vacuum degree in the feeding process through the installation of the pressure difference detection sensor and the vacuum breaking valve between the vacuum feeding machine and the feeding valve, can alarm and prompt when the vacuum degree is insufficient, can detect the material stacking condition of the dry granulation machine through the installation of the pressure detection switch on the dry granulation machine, and can alarm and prompt when the material in the dry granulation machine is stacked to a certain height.

Description

Technical Field

[0001] This utility model relates to the field of feeding machine technology, specifically to an alarm device for a dry granulation feeding machine. Background Technology

[0002] A vacuum conveyor is a device that uses the principle of vacuum negative pressure to suck up powdery, granular, or small lump materials through pipes and transport them to a designated location. It is commonly used in applications requiring material conveying in a closed, dust-free environment, such as the pharmaceutical, food, and chemical industries.

[0003] During the production process, the vacuum feeder sucks the material to be granulated into the vacuum feeder, which is connected to a vibrating screen. The material passes through the vibrating screen, and the material with the correct particle size is collected in a storage tank. The material with the incorrect particle size enters the dry granulator for granulation. The granulated material is then sucked back into the vacuum feeder and sieved through the vibrating screen. Due to factors such as the large range of powder particle sizes and the large differences in the flowability of powder materials, insufficient vacuum may occur, causing the material to be granulated to not be sucked up. This requires staff to be on-site at all times. In addition, when the vacuum degree is insufficient, the material with the incorrect particle size in the dry granulator also cannot be sucked up. The material accumulates in the dry granulator, and the dry granulator continues to granulate, but the material cannot be sucked into the vacuum feeder, resulting in incorrect particle size and affecting the operation of the dry granulator.

[0004] In summary, an alarm device is needed for a dry pelleting feeder that can issue an alarm when the vacuum level of the vacuum feeder is insufficient, and also issue an alarm when the material in the dry pelleting machine accumulates to a certain height. Summary of the Invention

[0005] To address the problem of insufficient vacuum in vacuum feeders preventing the collection of granulated material and the accumulation of substandard material in dry granulation machines, necessitating constant on-site monitoring, this invention provides an alarm device for dry granulation feeders. This simple device utilizes a differential pressure sensor and a vacuum breaker installed between the vacuum feeder and the feeding valve to monitor vacuum changes in real time. An alarm is triggered when the vacuum is insufficient. Additionally, a pressure detection switch on the dry granulation machine monitors material accumulation, triggering an alarm when material reaches a certain height.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: An alarm device for a dry granulation feeding machine includes a vacuum feeder, a vacuum generator, a backflush valve, a pressure sensor, a vacuum breaking valve, a feeding valve, a recovery valve, a first storage tank, a dry granulation machine, a vibrating screen, and a second storage tank. The vacuum feeder includes a discharge valve, a filter device, a vacuum feeder inlet, and a vacuum feeder outlet. The vibrating screen includes a vibrating screen inlet, a first vibrating screen outlet, and a second vibrating screen outlet. A pressure detection switch is installed on the top of the dry granulation machine. The vacuum generator is installed on the top of the vacuum feeder, and the backflush valve is installed within the vacuum generator. The vacuum feeder is equipped with a filter device at its upper part and a discharge valve at its lower part. The feed inlet of the vacuum feeder is connected to a first pipe. The pressure detection sensor, vacuum breaking valve, and feed valve are sequentially installed on the first pipe. The first pipe is connected to a first storage tank via a second pipe. The discharge outlet of the vacuum feeder is connected to the feed inlet of a vibrating screen via a flexible connection. The first discharge outlet of the vibrating screen is connected to a dry granulator via a pipe. The dry granulator is connected to the first pipe via a third pipe. The recovery valve is installed on the third pipe. The second discharge outlet of the vibrating screen is connected to a second storage tank via a pipe.

[0007] Furthermore, the first and third pipes are stainless steel pipes, and the second pipe is a steel wire hose.

[0008] Furthermore, casters are installed at the bottom of both the first and second storage tanks.

[0009] The main features of this utility model are as follows: This utility model provides an alarm device for a dry granulation feeding machine. The alarm device has a simple structure. By installing a differential pressure detection sensor and a vacuum breaking sensor between the vacuum feeder and the feeding valve, the change in vacuum degree during the feeding process can be detected in real time. An alarm is triggered when the vacuum degree is insufficient. A pressure detection switch is installed on the dry granulation machine to detect the material accumulation. When the material in the dry granulation machine accumulates to a certain height, an alarm is triggered. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the alarm device for the dry granulation feeding machine of this utility model. Figure 2 The circuit diagram is for the alarm device of the dry granulation feeding machine of this utility model. Figure 3 The circuit diagram shows the pressure detection switch in the alarm device of the dry pelletizing feeder of this utility model. The attached diagram is labeled as follows: 1-vacuum feeder, 101-feeding valve, 102-filter device, 103-vacuum feeder inlet, 104-vacuum feeder outlet, 2-vacuum generator, 3-backflush valve, 4-pressure sensor, 5-vacuum breaking valve, 6-feeding valve, 7-recovery valve, 8-first storage tank, 9-dry granulator, 901-pressure switch, 10-vibrating screen, 1001-vibrating screen inlet, 1002-vibrating screen first outlet, 1003-vibrating screen second outlet, 11-second storage tank, 12-first pipe, 13-second pipe, 14-flexible connection, 15-third pipe, 16-indicator light, 17-buzzer. Detailed Implementation

[0011] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings of the structural schematic diagram. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0012] As shown in Figure (1), a dry granulation feeding machine alarm device includes a vacuum feeder 1, a vacuum generator 2, a backflush valve 3, a pressure detection sensor 4, a vacuum breaking valve 5, a feeding valve 6, a recovery valve 7, a first storage tank 8, a dry granulation machine 9, a vibrating screen 10, and a second storage tank 11. The vacuum feeder 1 is a device that uses the principle of vacuum negative pressure to suck up powdery, granular, or small blocky materials through a pipeline and transport them to a designated location. The vacuum generator 2 is a new type of efficient, clean, economical, and small vacuum component that uses a positive pressure air source to generate negative pressure. This makes it very easy and convenient to obtain negative pressure in places where compressed air is available or where both positive and negative pressure are required in a pneumatic system. The pressure detection sensor 4 determines the flow rate or velocity by measuring the pressure difference between the two ends of the fluid, thereby realizing the monitoring and control of the fluid flow state. It consists of a pressure-sensitive element and a conversion circuit, which can convert pressure changes into electrical signal outputs and is usually used for continuous pressure measurement and control. The vacuum breaking valve 5 is a safety device used to prevent the formation of a vacuum, and is usually installed in pipes, containers, or equipment. The vacuum feeder includes a discharge valve 101, a filter device 102, a vacuum feeder inlet 103, and a vacuum feeder outlet 104. The vibrating screen 10 includes a vibrating screen inlet 1001, a vibrating screen first outlet 1002, and a vibrating screen second outlet 1003. The vibrating screen first outlet 1002 is used for discharging materials with unqualified particle size from the vibrating screen 10, and the vibrating screen second outlet 1003 is used for discharging materials with qualified particle size from the vibrating screen 10. The top of the dry granulator 9 is equipped with a pressure detection switch 901. The pressure detection switch 901 automatically turns on or off when a preset pressure is reached. It senses internal or external pressure changes, and when the pressure reaches the set value, the switch contacts actuate to turn the circuit on or off.The vacuum generator 2 is installed on top of the vacuum feeder 1, and the backflush valve 3 is installed inside the vacuum generator 2. A filter device 102 is installed on the upper part of the vacuum feeder 1, and a discharge valve 101 is installed on the lower part of the vacuum feeder 1. The vacuum feeder inlet 103 is connected to the first pipe 12. The pressure sensor 4, the vacuum breaking valve 5, and the feeding valve 6 are sequentially installed on the first pipe 12. The first pipe 12 is connected to the first storage tank 8 via a second pipe 13. The material to be granulated is placed in the first storage tank 8. Under the action of the vacuum generator 2, a vacuum is formed in the vacuum feeder 2, drawing the material to be granulated from the first storage tank 8 into the vacuum feeder 1 through the vacuum feeder inlet 103. The vacuum feeder outlet 104 is connected to the vibrating screen inlet 1001 via a flexible connection 14. The material to be granulated in the vacuum feeder 1 passes through the vacuum feeder outlet 1004. 4. The material enters the vibrating screen 10. The first discharge port 1002 of the vibrating screen is connected to the dry granulator 9 through a pipe. The material with unqualified particle size screened out of the vibrating screen 10 enters the dry granulator 9 through the first discharge port 1002 of the vibrating screen for granulation. The dry granulator 9 is connected to the first pipe 12 through the third pipe 15. The material after being granulated by the dry granulator 9 is sucked into the vacuum feeder 1 under the action of the vacuum generator 2. The recovery valve 7 is installed on the third pipe 15. The second discharge port 1003 of the vibrating screen is connected to the second storage tank 11 through a pipe. The material with qualified particle size enters the second storage tank 11 through the second discharge port 1003 of the vibrating screen for storage. The vacuum feeder 1, vacuum generator 2, pressure detection sensor 4, pressure detection switch 901, backflush valve 3, vacuum breaking valve 5, feeding valve 6, and recovery valve 7 are connected to the control system (not shown in the figure) through wires.

[0013] The first pipe 12 and the third pipe 15 are stainless steel pipes, the second pipe 13 is a steel wire hose, and the bottom of the first storage tank 8 and the second storage tank 11 are equipped with casters to facilitate the movement and transportation of the storage tanks.

[0014] The specific workflow is as follows: Connect the vacuum feeder 1 to the vibrating screen 10, connect the first pipe 12 to the second pipe 13, connect the second pipe 13 to the first storage tank 8, connect the vibrating screen 10 to the dry granulator 9, and connect the vibrating screen 10 to the second storage tank 11.

[0015] Step 1: Turn on the power. When material needs to be fed, close the feeding valve 101, vacuum breaking valve 5, recovery valve 7 and backflush valve 3, and turn on the vacuum generator 2 and feeding valve 6. The material to be granulated enters the vacuum feeder 1 from the first storage tank 8 under the action of the vacuum generator 2. The pressure detection sensor 4 detects the vacuum value in real time. When the pressure detection sensor 4 detects insufficient vacuum, the indicator light lights up and the buzzer sounds to remind the staff that there is a malfunction. The staff does not need to monitor it all the time.

[0016] Step 2: After the material is sucked up, the discharge valve 101, vacuum breaking valve 5, recovery valve 7, feeding valve 6 and vacuum generator 2 are closed, the backflush valve 3 is opened for backflush, and after backflushing for 1 second, the vacuum breaking valve 5 is opened to release the vacuum pressure. Then the discharge valve 101 is opened to discharge the material, and the material in the vacuum feeder 1 enters the vibrating screen 10 for sieving.

[0017] Step 3: Recover the material. Close the discharge valve 101, vacuum breaking valve 5, feeding valve 6, and backflush valve 3. Open the vacuum generator 2 and recovery valve 7. The material that does not meet the particle size requirements after passing through the vibrating screen 10 enters the dry granulator 9 for granulation. After granulation, the material enters the vacuum feeder 1 through the recovery valve 7 under the action of the vacuum generator 2. The pressure detection sensor 4 detects the vacuum value in real time. When the pressure detection sensor 4 detects insufficient vacuum, the indicator light lights up and the buzzer sounds to remind the staff that a malfunction has occurred.

[0018] Step 4: Close the discharge valve 101, vacuum breaking valve 5, recovery valve 7, feeding valve 6 and vacuum generator 2, open the backflush valve 3 for backflush, and after backflushing for 1 second, open the vacuum breaking valve 5 to release the vacuum pressure, and then open the discharge valve 101 to discharge the material. The material in the vacuum feeder 1 enters the vibrating screen 10 for sieving.

[0019] In the above feeding process, the first and second steps are a material suction cycle, and the third and fourth steps are a material recovery cycle. The number of cycles for each cycle can be adjusted according to the actual situation. For example, it can be set to start a material recovery cycle after 4 material suction cycles.

[0020] As shown in the circuit diagram (2), the first step is as follows: when material needs to be sucked up, the vacuum generator 2 switch SB1 is closed, the control system controls the feeding valve 101, the vacuum breaking valve 5, the recovery valve 7 and the backflush valve 3 to close, the vacuum generator 2 is powered on and opened, the feeding valve 6 is opened, KT1 and KM1 are energized, SKT1 is closed, and the material to be granulated enters the vacuum feeder 1 from the first storage tank 8 under the action of the vacuum generator 2. The pressure detection sensor 4 detects the vacuum value in real time. When the vacuum value in the pressure detection sensor 4 is normal, the vacuum feeder 1 feeds normally. When the pressure detection sensor 4 detects that the vacuum is insufficient, SB2 is closed, KT2 is energized, SKT2 is closed, the indicator light 16 lights up, and the buzzer 17 sounds to remind the staff that there is a fault. The staff does not need to keep an eye on it.

[0021] Step 2: After the material is sucked up, the control system controls the discharge valve 101, vacuum breaking valve 5, recovery valve 7, feeding valve 6 and vacuum generator 2 to close, SB1 to open, SB4 and SB5 to close, backflush valve 3 switch SB3 to close, backflush valve 3 to open and backflush, backflush for 1 second, KM2 to be energized, SKM2 to close, KM3 to be energized, SKM3 to close, KT3 to be energized, SKT3 to close, vacuum breaking valve 5 to be energized and open, after the vacuum pressure is released, the control system controls the discharge valve 101 to open and discharge the material, the material in the vacuum feeder 1 enters the vibrating screen 10 for sieving.

[0022] If the vacuum breaking valve 5 malfunctions and fails to break the vacuum, resulting in an excessively high vacuum value in the pressure detection sensor 4, SB5 will open, the feed valve 101 will be de-energized, and the control system will be unable to control the feed valve 101 to open, preventing the valve stem from being forcibly deformed and damaged.

[0023] As shown in the circuit diagram (3), during operation, SB6 is closed. When too much material accumulates in the dry granulator 9, the pressure detection switch 901 detects the pressure, SB7 is closed, KT4 is energized, SKT4 is closed, indicator light 16 lights up, and buzzer 17 sounds to remind the staff that a fault has occurred.

[0024] Based on the above process, the problem of insufficient vacuum in the vacuum feeder, which prevents the material to be granulated from being sucked up, and the problem of material with unqualified particle size in the dry granulator from being sucked up and accumulating in the dry granulator, requiring staff to be on-site at all times, can be solved.

[0025] In summary, the alarm device for this dry pelletizing feeder has a simple structure. By installing a differential pressure sensor and a vacuum breaking sensor between the vacuum feeder and the feed valve, the change in vacuum level during the feeding process can be detected in real time. An alarm will be triggered when the vacuum level is insufficient. A pressure detection switch installed on the dry pelletizing machine can detect the material accumulation situation. When the material in the dry pelletizing machine accumulates to a certain height, an alarm will be triggered.

[0026] It should be noted that the above description is merely a preferred embodiment of the present invention. 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 that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention.

Claims

1. An alarm device for a dry granulation feeding machine, characterized in that, The alarm device for the dry granulation feeder includes a vacuum feeder (1), a vacuum generator (2), a backflush valve (3), a pressure sensor (4), a vacuum breaking valve (5), a feeding valve (6), a recovery valve (7), a first storage tank (8), a dry granulation machine (9), a vibrating screen (10), and a second storage tank (11). The vacuum feeder includes a discharge valve (101), a filter device (102), a vacuum feeder inlet (103), and a vacuum feeder outlet (104). The vibrating screen (10) includes a vibrating screen inlet (1001), a vibrating screen first outlet (1002), and a vibrating screen second outlet (1003). A pressure detection switch (901) is installed on the top of the dry granulation machine (9). The vacuum generator (2) is installed on the top of the vacuum feeder (1), and the backflush valve (3) is installed on the top of the vacuum feeder (1). In the generator (2), a filter device (102) is installed on the upper part of the vacuum feeder (1), and a discharge valve (101) is installed on the lower part of the vacuum feeder (1). The feed inlet (103) of the vacuum feeder is connected to the first pipe (12). The pressure detection sensor (4), the vacuum breaking valve (5) and the feed valve (6) are installed on the first pipe (12) in sequence. The first pipe (12) is connected to the first storage tank (8) through the second pipe (13). The discharge port (104) of the vacuum feeder is connected to the feed port (1001) of the vibrating screen through the flexible connection (14). The first discharge port (1002) of the vibrating screen is connected to the dry granulator (9) through the pipe. The dry granulator (9) is connected to the first pipe (12) through the third pipe (15). The recovery valve (7) is installed on the third pipe (15).

2. The alarm device for the dry granulation feeding machine according to claim 1, characterized in that, The first pipe (12) and the third pipe (15) are stainless steel pipes, and the second pipe (13) is a steel wire hose.

3. The alarm device for the dry granulation feeding machine according to claim 2, characterized in that, The bottom of the first storage tank (8) and the second storage tank (11) are equipped with casters.

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