A chemical safety feeding device

Abstract

This utility model discloses a chemical safety feeding device, including a feeding hopper with a vacuum feeding mechanism installed on it. The bottom outlet of the feeding hopper is connected to a storage hopper via a shut-off valve. The bottom outlet of the storage hopper is connected to a cylinder. A discharge pipe is provided at one bottom end of the cylinder. A screw feeding mechanism is installed on the cylinder. An opening groove is provided through the outer wall of the storage hopper near the bottom. In use, after the chemical raw materials are sucked into the feeding hopper by the vacuum feeding mechanism, the shut-off valve is opened to guide the raw materials from the feeding hopper into the storage hopper. Then, the screw feeding mechanism is activated to feed the raw materials into the reaction vessel. The feeding amount can be controlled relatively accurately. By periodically starting the vibration motor, the rubber sheet can vibrate, thereby shaking off the raw materials accumulated at the bottom of the storage hopper to prevent blockage at the cylinder's inlet. The device has good performance.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, specifically a chemical safety feeding device. Background Technology

[0002] In chemical production processes, various liquid, particulate, or powdered raw materials need to be put into reaction vessels to carry out chemical reactions in order to obtain chemical products.

[0003] A search revealed that patent CN222930816U discloses a chemical safety feeding device. By aligning the guide tube with the feeding hole and the mounting ring with the mounting groove, the storage box can be conveniently placed on the cover. Then, simply activating the electric push rod causes the output end of the electric push rod to retract, driving the fixed plate to move. This allows the locking block to easily lock the mounting ring and the guide tube, pre-storing the material in the storage box. Consequently, the material can be conveniently and safely fed into the box without repeatedly opening and closing the cover, improving the safety of the feeding device.

[0004] While the above solution can reduce the number of times the box is opened and closed during material feeding to reduce the leakage of chemical raw materials and thus improve safety, in actual use, the use of solenoid valves to control the opening and closing of the conduit cannot effectively control the amount of raw materials fed. Furthermore, when the storage box is installed on the cover, it requires manual handling, which is laborious. In addition, the solenoid valve wires also limit the range of motion of the storage box, making it inconvenient to use and requiring improvement. Utility Model Content

[0005] The purpose of this invention is to provide a chemical safety feeding device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A chemical safety feeding device includes a feeding hopper with a vacuum feeding mechanism installed on it. A storage hopper is connected to the bottom outlet of the feeding hopper via a shut-off valve. A cylinder is connected to the bottom outlet of the storage hopper. A discharge pipe is provided at one bottom end of the cylinder. A screw feeding mechanism is installed on the cylinder. An opening slot is provided through the outer wall of the storage hopper near the bottom. An anti-blocking mechanism is installed on the storage hopper at a location corresponding to the opening slot. The anti-blocking mechanism includes a detachable rubber sheet installed at the opening slot. A vibration motor is installed on the outer wall of the storage hopper on the rubber sheet.

[0008] As a further embodiment of this utility model: a plurality of first screws are fixedly installed on the outer wall of the storage barrel located outside the opening groove; a pressure frame is provided on one side of the rubber sheet; the rubber sheet is located between the pressure frame and the storage barrel; and a first nut is connected to the end of the first screw away from the storage barrel after passing through the pressure frame.

[0009] As a further embodiment of this utility model: an inner plate and an outer plate are respectively provided on both sides of the rubber sheet, a plurality of mounting ears are provided on the outer wall of the vibration motor, a plurality of second screws are fixedly installed on the outer wall of the inner plate, and a second nut is connected to the end of the second screw away from the inner plate after passing through the mounting ears of the rubber sheet, the outer plate and the vibration motor.

[0010] As a further embodiment of this utility model: the screw feeding mechanism includes a rotating shaft rotatably installed inside the cylinder, with auger blades fixedly installed on the outer wall of the rotating shaft, and a speed-reducing stepper motor fixedly installed at one end of the cylinder, with the output shaft of the speed-reducing stepper motor fixedly connected to one end of the rotating shaft.

[0011] As a further embodiment of this utility model: the vacuum feeding mechanism includes an air outlet pipe fixedly installed on the top of the feeding barrel, the top end of the air outlet pipe is connected to a vacuum pump unit through a pipe, and an air inlet pipe is fixedly connected to the outer wall of the feeding barrel near the top end along its tangent, and the air inlet end of the air inlet pipe is connected to a suction pipe through a flexible hose.

[0012] As a further improvement of this utility model: a filter is installed at one end of the air outlet pipe located inside the feeding hopper.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In use, this utility model uses a vacuum feeding mechanism to draw chemical raw materials into a feeding hopper. After opening the shut-off valve, the raw materials in the feeding hopper are transferred into a storage hopper. Then, the screw feeding mechanism is started to feed the raw materials into the reaction vessel. The amount of material fed can be controlled relatively accurately. By periodically starting the vibration motor, the rubber sheet can be vibrated to shake off the raw materials accumulated at the bottom of the storage hopper, thus preventing the raw materials from clogging the feed inlet of the cylinder. The effect is good. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a chemical safety feeding device.

[0016] Figure 2 This is a schematic diagram of the anti-clogging mechanism in a chemical safety feeding device.

[0017] Figure 3 This is a schematic diagram of the screw feeding mechanism in a chemical safety feeding device.

[0018] Among them, there are: 1. Feeding hopper; 2. Air outlet pipe; 3. Air inlet pipe; 4. Hose; 5. Suction pipe; 6. Cut-off valve; 7. Storage hopper; 8. Anti-blocking mechanism; 9. Cylinder; 10. Discharge pipe; 11. Gear stepper motor; 12. Rotary shaft; 13. Screw blade; 14. Opening groove; 15. Rubber sheet; 16. First screw; 17. First nut; 18. Inner plate; 19. Outer plate; 20. Second screw; 21. Second nut; 22. Vibration motor; 23. Pressure frame. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-3 In this embodiment of the present invention, a chemical safety feeding device includes a feeding hopper 1, on which a vacuum feeding mechanism is installed. The bottom outlet of the feeding hopper 1 is connected to a storage hopper 7 via a shut-off valve 6. The bottom outlet of the storage hopper 7 is connected to a cylinder 9. A discharge pipe 10 is provided at one bottom end of the cylinder 9. A screw feeding mechanism is installed on the cylinder 9. An opening groove 14 is provided through the outer wall of the storage hopper 7 near the bottom end. An anti-blocking mechanism 8 is installed on the storage hopper 7 at the corresponding position of the opening groove 14. The anti-blocking mechanism 8 includes a detachable rubber sheet 15 installed at the opening groove 14. A vibration motor 22 is provided on the outer wall of the rubber sheet 15 located on the outside of the storage hopper 7. The discharge pipe 10 of the cylinder 1 is connected to the inlet flange of the reaction vessel. The feeding hopper 1 and the storage hopper 7 are fixed to the reaction vessel or the outside of the reaction vessel by a bracket.

[0021] By adopting the above-mentioned solution, this utility model allows chemical raw materials to be sucked into the feeding barrel 1 through the vacuum feeding mechanism during use. After the shut-off valve 6 is opened, the raw materials in the feeding barrel 1 are introduced into the storage barrel 7. Then, the screw feeding mechanism is started to put the raw materials into the reaction vessel. The amount of material fed can be controlled more accurately. By periodically starting the vibration motor 22, the rubber sheet 15 can be vibrated, thereby shaking off the raw materials accumulated at the bottom of the storage barrel 7 to avoid the raw materials clogging the feed inlet of the cylinder 9. The effect of use is good.

[0022] Specific combination Figure 2In one embodiment of the present invention, a plurality of first screws 16 are fixedly installed on the outer wall of the storage barrel 7 located outside the opening groove 14. A pressure frame 23 is provided on one side of the rubber sheet 15. The rubber sheet 15 is located between the pressure frame 23 and the storage barrel 7. The end of the first screw 16 away from the storage barrel 7 passes through the pressure frame 23 and is connected to a first nut 17.

[0023] By using the first screw 16 and the first nut 17, the pressure frame 23 can press the rubber sheet 15 onto the outer wall of the storage tank 7 to seal the opening slot 14 and prevent chemical powder from leaking out of the opening slot 14.

[0024] Specific combination Figure 2 In one embodiment of the present invention, an inner plate 18 and an outer plate 19 are respectively provided on both sides of the rubber sheet 15, a plurality of mounting ears are provided on the outer wall of the vibration motor 22, and a plurality of second screws 20 are fixedly installed on the outer wall of the inner plate 18. The end of the second screw 20 away from the inner plate 18 passes through the mounting ears of the rubber sheet 15, the outer plate 19 and the vibration motor 22 and is connected to a second nut 21.

[0025] The inner plate 18, the outer plate 19, the second screw 20, and the second nut 21 facilitate the fixing of the vibration motor 22 onto the rubber sheet 15. Furthermore, by installing rods, hooks, and other structures on the surface of the inner plate 18, the raw materials in the storage hopper 7 can be better shaken apart.

[0026] Specific combination Figure 3 In one embodiment of the present invention, the screw feeding mechanism includes a rotating shaft 12 rotatably installed inside the cylinder 9, a auger blade 13 fixedly installed on the outer wall of the rotating shaft 12, and a speed reduction stepper motor 11 fixedly installed at one end of the cylinder 9, with the output shaft of the speed reduction stepper motor 11 fixedly connected to one end of the rotating shaft 12.

[0027] By starting the deceleration stepper motor 11 to drive the rotating shaft 12 to rotate, the rotating auger blades 13 can be used to transport the raw material falling into the cylinder 9 to the discharge pipe 10.

[0028] Specific combination Figure 1 In one embodiment of the present invention, the vacuum feeding mechanism includes an air outlet pipe 2 fixedly installed on the top of the feeding barrel 1. The top end of the air outlet pipe 2 is connected to a vacuum pump unit (not shown in the figure) through a pipe. An air inlet pipe 3 is fixedly connected to the outer wall of the feeding barrel 1 near the top end along its tangent. The air inlet end of the air inlet pipe 3 is connected to a suction pipe 5 through a flexible hose 4.

[0029] By starting the vacuum pump unit, a negative pressure can be formed inside the feeding barrel 1. At this time, the suction pipe 5 is inserted into the container containing the chemical raw materials, and the chemical raw materials can be sucked into the feeding barrel 1.

[0030] Based on the previous embodiment, a filter is further installed at one end of the vent pipe 2 inside the feeding barrel 1 to prevent a large amount of chemical raw materials from being drawn out through the vent pipe 2.

[0031] Furthermore, in some preferred embodiments of this utility model, the shut-off valve 6 is preferably one of a pneumatic butterfly valve, an electric butterfly valve, a pneumatic gate valve, or an electric gate valve.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A chemical safety feeding device, characterized in that: The device includes a feeding hopper (1), on which a vacuum feeding mechanism is installed. The bottom outlet of the feeding hopper (1) is connected to a storage hopper (7) via a shut-off valve (6). The bottom outlet of the storage hopper (7) is connected to a cylinder (9). A discharge pipe (10) is provided at one end of the bottom of the cylinder (9). A screw feeding mechanism is installed on the cylinder (9). An opening groove (14) is provided through the outer wall of the storage hopper (7) near the bottom. An anti-blocking mechanism (8) is installed on the storage hopper (7) at the corresponding position of the opening groove (14). The anti-blocking mechanism (8) includes a detachable rubber sheet (15) installed at the opening groove (14). A vibration motor (22) is provided on the outer wall of the storage hopper (7) on the outside of the rubber sheet (15).

2. The chemical safety feeding device according to claim 1, characterized in that: The storage hopper (7) is fixedly installed with a plurality of first screws (16) on the outer wall outside the opening groove (14). A pressure frame (23) is provided on one side of the rubber sheet (15). The rubber sheet (15) is located between the pressure frame (23) and the storage hopper (7). The end of the first screw (16) away from the storage hopper (7) passes through the pressure frame (23) and is connected with a first nut (17).

3. The chemical safety feeding device according to claim 1, characterized in that: The rubber sheet (15) has an inner plate (18) and an outer plate (19) on both sides respectively. The outer wall of the vibration motor (22) is provided with multiple mounting ears. Multiple second screws (20) are fixedly installed on the outer wall of the inner plate (18). The end of the second screw (20) away from the inner plate (18) passes through the mounting ears of the rubber sheet (15), the outer plate (19) and the vibration motor (22) and is connected to a second nut (21).

4. A chemical safety feeding device according to claim 1, characterized in that: The screw feeding mechanism includes a rotatable shaft (12) installed inside the cylinder (9). The outer wall of the shaft (12) is fixedly fitted with a dragon blade (13). A speed reduction stepper motor (11) is fixedly installed at one end of the cylinder (9). The output shaft of the speed reduction stepper motor (11) is fixedly connected to one end of the shaft (12).

5. A chemical safety feeding device according to claim 1, characterized in that: The vacuum feeding mechanism includes an air outlet pipe (2) fixedly installed on the top of the feeding barrel (1). The top end of the air outlet pipe (2) is connected to a vacuum pump unit through a pipe. An air inlet pipe (3) is fixedly connected to the outer wall of the feeding barrel (1) near the top end along its tangent. The air inlet end of the air inlet pipe (3) is connected to a suction pipe (5) through a hose (4).

6. A chemical safety feeding device according to claim 5, characterized in that: The air outlet pipe (2) is equipped with a filter at one end inside the feeding hopper (1).

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