CN211216570U - Granular raw material vacuum feeding system - Google Patents

Abstract

The utility model discloses a vacuum feeding system for granular raw materials, which is used for feeding materials from a silo to a reaction kettle, comprising a filter, a material suction gun, a vacuum pump and a controller. A cavity composed of a cylindrical structure, a conical structure and a second cylindrical structure, the inner cavity of the upper part of the second cylindrical structure is provided with a butterfly valve, and a weighing unit is provided below the butterfly valve, and the weighing unit includes a circular truncated weighing unit. The weight box, the bottom of the weighing box is provided with a pressure sensor, the opposite ends of the weighing box are respectively provided with a first rotating shaft and a second rotating shaft, the first rotating shaft is rotatably connected with the side wall of the second cylindrical structure, and the second rotating shaft extends The second cylindrical structure is connected with an external motor, and the lower end of the second cylindrical structure is connected with the feed port of the reactor; the controller is connected with the first position sensor, the second position sensor, the vacuum pump, the butterfly valve and the motor. The utility model realizes automatic and accurate feeding by arranging a weighing box in the filter, and has a simple and reliable structure.

Description

A vacuum feeding system for granular raw materials

technical field

The utility model belongs to the technical field of vacuum feeding, in particular to a vacuum feeding system for granular raw materials.

Background technique

In the process of participating in the reaction of the granular raw material in the reactor, it needs to be loaded first. For example, ferrous sulfate participates in the reaction. The current feeding process is generally manual feeding or vacuum automatic feeding. Vacuum automatic feeding generally adopts vacuum pump and suction gun to suck granular raw materials from the silo into the filter, and then discharge the material into the reaction kettle after filtering. Although it saves the cumbersome manual feeding, and improves the safety of manual feeding. However, the current automatic feeding of the vacuum pump adopts the controller to control the opening and closing of the butterfly valve to realize the feeding. The butterfly valve is opened for blanking, and the butterfly valve is closed to store the material. When it is judged according to experience that the feeding into the reactor is completed, the controller controls the vacuum pump to close, but Precise feeding is not possible.

Utility model content

Aiming at the technical problems existing in the prior art, the utility model provides a vacuum feeding system for granular raw materials.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

A granular raw material vacuum feeding system for feeding material from a silo to a reaction kettle, comprising:

The filter includes a cavity formed by a first cylindrical structure, a conical structure and a second cylindrical structure integrally formed from top to bottom, the inner cavity of the upper part of the second cylindrical structure is provided with a butterfly valve, and the A weighing unit is arranged below the butterfly valve, and the weighing unit includes a truncated weighing box, the bottom of the weighing box is provided with a pressure sensor, and the opposite ends of the weighing box are respectively provided with a first rotating shaft and The second rotating shaft, the first rotating shaft is rotatably connected to the side wall of the second cylindrical structure, the second rotating shaft extends out of the second cylindrical structure and is connected to an external motor, and the lower end of the second cylindrical structure is connected to the reaction The feed port of the kettle is connected;

A suction gun, one end of which extends into the silo, and the other end is connected with a suction pipe;

The discharge port is connected to the other end of the suction pipe and extends into the cavity of the first cylindrical structure. The discharge port is provided with a filter screen covering the cross section. A second position sensor and a first position sensor are sequentially arranged on the inner wall of the cylindrical structure from top to bottom;

a vacuum pump, which is arranged on the top of the filter, and the vacuum pump is connected with a suction pipe extending into the filter;

The controller is connected with the first position sensor, the second position sensor, the vacuum pump, the butterfly valve and the motor.

Preferably, the end of the discharge port is provided with a cover plate, and the cover plate is in the shape of a semi-circular arc and is connected to the upper half of the end of the discharge port.

Preferably, the interior of the first cylindrical structure is provided with a baffle covering the cross section, and the suction pipe extends through the baffle into the cavity below the baffle.

Preferably, the side wall of the silo is provided with a vibration motor.

The granular raw material vacuum feeding system of the utility model has the following beneficial effects: the utility model realizes automatic and accurate feeding by arranging a weighing box in the filter, and has a simple and reliable structure.

Description of drawings

Fig. 1 is the front view structure schematic diagram of a kind of granular raw material vacuum feeding system in the utility model;

Fig. 2 is the enlarged view of A of Fig. 1;

Fig. 3 is a control block diagram of a granular raw material vacuum feeding system in the utility model.

In the figure: 1. silo; 2. filter; 21. first cylindrical structure; 22. conical structure; 23. second cylindrical structure; 3. suction gun; 4. vacuum pump; 5. weighing box ; 6. Pressure sensor; 7. First shaft; 8. Second shaft; 9. Motor; 10. Reactor; 101. Feed inlet; 11. Suction pipe; 12. Outlet; 14. Suction pipe; 15. Cover plate; 16. Baffle plate; 17. Butterfly valve; 18. First position sensor; 19. Second position sensor; 20. Vibration motor.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 to 3, a granular raw material vacuum feeding system is used to feed the reaction kettle 10 from the silo 1, including a filter 2, a suction gun 3, a vacuum pump 4 and a controller 20, filtering The device 2 includes a cavity formed by a first cylindrical structure 21, a conical structure 22 and a second cylindrical structure 23 integrally formed from top to bottom. The inner cavity of the upper part of the second cylindrical structure 23 is provided with a butterfly valve 17. The butterfly valve The bottom of 17 is provided with a weighing unit, the weighing unit includes a truncated weighing box 5, the bottom of the weighing box 5 is provided with a pressure sensor 6, and the opposite ends of the weighing box 5 are respectively provided with a first rotating shaft 7 and a first rotating shaft 7. Two rotating shafts 8, the first rotating shaft 7 is rotatably connected to the side wall of the second cylindrical structure 23, the second rotating shaft 8 extends out of the second cylindrical structure 23 and is connected to the external motor 9, and the second cylindrical structure 23 is connected to the reactor 10. The feed port 101 is connected.

One end of the suction gun 3 extends into the silo 1, and the other end is connected with a suction pipe 11. The end of the suction pipe 11 away from the silo 1 is provided with a discharge port 12, and the discharge port 12 extends into the first cylindrical structure 21. In the cavity, the discharge port 12 is provided with a filter screen 13 covering the cross-section, the inner wall of the second cylindrical structure 23 below the discharge port 12 is provided with a first position sensor 18, and the upper part of the first position sensor 18 is provided. There is a second position sensor 19 , which is also located below the outlet 12 . The vacuum pump 4 is arranged on the top of the filter 2 , and the vacuum pump 4 is connected with a suction pipe 14 extending into the filter 2 .

The controller is connected to the first position sensor 18 , the second position sensor 19 , the vacuum pump 4 , the butterfly valve 17 and the motor 9 .

In this embodiment, the end of the discharge port 12 is provided with a cover plate 15. The cover plate 15 is in the shape of a semi-circular arc and is connected to the upper half of the end of the discharge port 12, which is convenient for discharging and reduces granularity. The raw material will be sucked upward, so that the granular raw material is rapidly accumulated, and the scattering is reduced, so as to fall into the cavity of the conical structure 22 .

In this embodiment, a baffle 16 covering the cross section is provided inside the first cylindrical structure 21 , and the suction pipe 14 extends through the baffle 16 into the cavity below the baffle 16 . The function of the baffle 16 is to ensure that the granular raw material can enter the cavity of the conical structure 22 .

In this embodiment, the side wall of the silo 1 is provided with a vibrating motor 20 (outsourced part), which can prevent the raw material from agglomerating and prevent the suction gun 3 from being blocked during suction.

The working principle of a granular raw material vacuum feeding system in the present invention is that the butterfly valve 17 is initially closed, the vacuum pump 4 is turned on, and the vacuum in the filter 2 starts to be extracted, so that the granular raw materials pass through the suction gun 3 in sequence. , the suction pipe 11 and the feeding port 12 fall into the first cylindrical structure 21 . Under the action of the cover plate 15 and the baffle plate 16 , the granular raw materials will form a stack above the butterfly valve 17 . When the first position sensor 18 detects the height of the stack, it will send a signal to a controller, the controller controls the butterfly valve 17 to open, and starts to drop the material into the weighing box 5, and the pressure sensor 6 detects the preset weight and sends a signal to the Sent to the controller, the controller controls the butterfly valve 17 to close, and at the same time the controller controls the motor 9 to drive the weighing box 5 to turn over, so that the granular raw material falls into the feeding port 101 . When the second position sensor 18 detects the height of the stack, it sends a signal to the controller to turn off the vacuum pump 4 . Therefore, automatic feeding of granular raw materials can be realized.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the spirit and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims (4)

1. A granular raw material vacuum feeding system is used for feeding materials from a storage bin to a reaction kettle and is characterized by comprising

The filter comprises a cavity formed by a first cylindrical structure, a conical structure and a second cylindrical structure which are integrally formed from top to bottom, a butterfly valve is arranged in an inner cavity of the upper portion of the second cylindrical structure, a weighing unit is arranged below the butterfly valve and comprises a round platform-shaped weighing box, a pressure sensor is arranged at the bottom of the weighing box, a first rotating shaft and a second rotating shaft are respectively arranged at two opposite ends of the weighing box, the first rotating shaft is rotationally connected with the side wall of the second cylindrical structure, the second rotating shaft extends out of the second cylindrical structure and is connected with an external motor, and the lower end of the second cylindrical structure is connected with a feeding hole of the reaction kettle;

one end of the material suction gun extends into the material bin, and the other end of the material suction gun is connected with a material suction pipe;

the discharge port is connected to the other end of the material suction pipe and extends into the cavity of the first cylindrical structure, a filter screen covering the cross section is arranged in the discharge port, and a second position sensor and a first position sensor are sequentially arranged on the inner wall of the second cylindrical structure below the discharge port from top to bottom;

the vacuum pump is arranged at the top of the filter and is connected with an air suction pipe extending into the filter;

and the controller is connected with the first position sensor, the second position sensor, the vacuum pump, the butterfly valve and the motor.

2. The vacuum feeding system for granular raw materials as claimed in claim 1, wherein the end of the discharging hole is provided with a cover plate, and the cover plate is in a semi-circular arc shape and is connected to the upper half part of the end part of the discharging hole.

3. A vacuum charging system for granular raw materials according to claim 1, characterized in that the first cylindrical structure is internally provided with a baffle plate covering the cross section, and the air suction pipe passes through the baffle plate and extends into the cavity below the baffle plate.

4. The vacuum feeding system for granular raw materials as claimed in claim 1, wherein the side wall of the bin is provided with a vibration motor.

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