Vacuum feeding machine

Abstract

The utility model relates to the technical field of vacuum feeding, in particular to a vacuum feeding machine. Comprising a fan, a transition bin and a stock bin, a pulse blowback valve is installed at the top of the stock bin, a butterfly valve is installed at the discharging end of the bottom of the stock bin, a filter cylinder is arranged in an inner cavity of the stock bin, and an air outlet of the fan is communicated with an air inlet in the left side of the top of the stock bin through an air pipe; a discharging port is obliquely formed in the end, located in the inner cavity of the transition bin, of the material pipe, a sealing cover plate is rotationally installed on the discharging port through a rotating shaft, the left end of the discharging port is lower than the right end, and the distance between the right end of the discharging port and the inner wall of the transition bin is smaller than the distance between the left end of the discharging port and the transition bin. Not only can the stability of material conveying be ensured, but also dust can be effectively prevented from being sprayed out from the material suction pipe when the filter cartridge is subjected to back-blowing cleaning through the pulse back-blowing valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum feeding technology field, concretely is a kind of vacuum feeding machine. BACKGROUND

[0002] Vacuum conveyor is mainly used for powder conveying, with the widespread application of vacuum conveyor in powder conveying industry, the competition of vacuum conveyor is more intense, the cost advantage is more obvious, and with the mass application of equipment, some small problems on equipment also appear, such as when pulse valve backflushing, dust is ejected from suction pipe, cause a large amount of dust in workshop, cause environmental pollution. SUMMARY

[0003] (I) technical problem solved

[0004] In order to solve the above problems of prior art, the utility model provides a kind of vacuum feeding machine, not only can guarantee the stability of conveying, when being backflushed and cleaned to filter cartridge by pulse backflushing valve, dust can be effectively avoided from being ejected from suction pipe.

[0005] (II) technical scheme

[0006] In order to achieve the above purpose, the main technical scheme adopted by the utility model includes:

[0007] A kind of vacuum feeding machine, including fan, transition bin and bunker, the pulse backflushing valve is installed at the top position of the transition bin, butterfly valve is installed at the bottom discharge end of the transition bin, filter cartridge is arranged at the inner cavity position of the transition bin, the air outlet of the fan is communicated with the air inlet of the left side of the top of transition bin by air pipe, material pipe is arranged between the bunker and transition bin, the discharge outlet is obliquely arranged at one end of the inner cavity of transition bin, the sealing cover plate is rotatably installed on the discharge outlet by rotating shaft, the discharge outlet is obliquely arranged, the left side of one end of the discharge outlet is lower than the right side, the distance between the right side of one end of the discharge outlet and the inner wall of transition bin is less than the distance between the left side of one end and transition bin.Not only can guarantee the stability of conveying, when being backflushed and cleaned to filter cartridge by pulse backflushing valve, dust can be effectively avoided from being ejected from suction pipe.

[0008] Preferably, the sealing gasket is arranged on the side of the sealing cover plate close to the discharge outlet.

[0009] (III) beneficial effects

[0010] The utility model provides a kind of vacuum feeding machine. It has the following beneficial effects:

[0011] (1) Under natural conditions, the sealing cover is closed under the action of gravity. Only when the material is being sucked will the sealing cover be opened by external air pressure and material pressure (at this time, the pulse valve will not open during backflush). This solves the problem of dust being sprayed out of the suction pipe when the pulse valve is backflush.

[0012] (2) Compared with traditional valves, the advantages are as follows: 1. Low cost. Due to the simple manufacturing of the sealing cover and the discharge port, the cost is much lower than that of pneumatic butterfly valves and ball valves. 2. Energy saving and environmental protection. Since this one-way valve does not require electricity or gas to open and close, it saves a lot of electricity and gas. 3. No material blockage. When the one-way valve is opened, it will be fully open, and there will be no valve plate in the pipeline, which will cause material blockage. When the pneumatic butterfly valve is opened, there is a valve plate in the middle, which will cause some pipeline blockage. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the present utility model;

[0014] Figure 2 This is a structural diagram of the sealing cover plate installation of this utility model.

[0015] In the diagram: 1. Fan; 2. Transition chamber; 3. Hopper; 4. Pulse backflush valve; 5. Butterfly valve; 6. Filter cartridge; 7. Material pipe; 8. Discharge port; 9. Sealing cover plate; 10. Sealing gasket. Detailed Implementation

[0016] 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.

[0017] like Figure 1 As shown, the vacuum feeder in this embodiment includes a blower 1, a transition chamber 2, and a hopper 3. A pulse backflush valve 4 is installed at the top of the transition chamber 2, and a butterfly valve 5 is installed at the bottom discharge end of the transition chamber 2. A filter cartridge 6 is installed inside the transition chamber 2. The air outlet of the blower 1 is connected to the air inlet on the left side of the top of the transition chamber 2 through an air duct. A material pipe 7 is installed between the hopper 3 and the transition chamber 2. A discharge port 8 is inclined at one end of the material pipe 7 inside the transition chamber 2. A sealing cover 9 is rotatably installed on the discharge port 8 via a rotating shaft. The discharge port 8 is inclined, with the left end of the discharge port 8 lower than the right end. The distance between the right end of the discharge port 8 and the inner wall of the transition chamber 2 is less than the distance between the left end and the transition chamber 2. Under the action of gravity, the sealing cover 9 keeps the material pipe 7 in a closed state. The sealing cover 9 is only opened when it is subjected to external air pressure and material pressure during material suction.

[0018] Further, the sealing cover plate 9 is provided with a sealing gasket 10 near the discharge port 8.

[0019] Working principle: under natural conditions, the sealing cover plate 9 is in a closed state under the action of gravity. When the fan 1 sucks the material through the air pipe, the sealing cover plate 9 is opened under the action of negative pressure. At this time, the pulse valve backflush valve 4 is in a closed state. When the filter cartridge 6 needs to be cleaned, the fan 1 is in a closed state. When the pulse air flow blown by the pulse backflush valve 4 pulses the filter cartridge 6, the sealing cover plate 9 is still in a closed state under the action of gravity, so that the dust during the backflush of the pulse valve will not be sprayed out of the material pipe 7.

Claims

1. A vacuum loading machine comprising a fan (1), a transition bin (2) and a bin (3), characterized in that: The pulse back flushing valve (4) is installed at the top of the transition bin (2), the butterfly valve (5) is installed at the bottom discharge end of the transition bin (2), the filter cartridge (6) is arranged in the inner cavity of the transition bin (2), the air outlet of the fan (1) is communicated with the air inlet at the left top of the transition bin (2) through the air pipe, the material bin (3) and the transition bin (2) are provided with the material pipe (7), the material pipe (7) is provided with the discharge port (8) at one end of the inner cavity of the transition bin (2) and is inclined, the sealing cover plate (9) is rotatably installed on the discharge port (8) through the rotating shaft, the discharge port (8) is inclined, the left end of the discharge port (8) is lower than the right end, and the distance between the right end of the discharge port (8) and the inner wall of the transition bin (2) is smaller than the distance between the left end of the discharge port (8) and the transition bin (2).

2. A vacuum loading machine according to claim 1, characterized in that: The sealing cover plate (9) is provided with the sealing gasket (10) close to the side of the discharge port (8).

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