CN215325661U - Negative pressure conveying device - Google Patents

Abstract

The utility model relates to a negative pressure conveying device. The technical scheme is as follows: the utility model provides a negative pressure conveyor, a plurality of unit pipes that connect gradually including the end to end, the unit pipe is provided with feed inlet and discharge gate, the end connection anti-blocking valve of the discharge gate of unit pipe, anti-blocking valve includes the valve body, the valve body is provided with air inlet and gas outlet, be provided with the spring in the valve body, the air inlet and the gas outlet mutual disposition of valve body, the air inlet of valve body and the length direction of the line direction parallel spring of gas outlet, the one end of spring and the gas outlet place end contact of valve body, the other end vertical connection of spring has the case, the case covers the air inlet and with air inlet place end contact. When the unit pipe is blocked, the internal negative pressure is increased, the valve core opens the air inlet under the action of the negative pressure, the external air enters the device, the concentration of the materials in the device is reduced, the internal negative pressure is reduced, fewer materials enter the device, and the blocked part is blown in the opposite direction of material conveying.

Description

Negative pressure conveying device

Technical Field

The utility model relates to the technical field of material conveying, in particular to a negative pressure conveying device.

Background

The negative pressure conveying is a conveying mode that external gas flows to negative pressure by forming a negative pressure space and simultaneously drives materials to be conveyed to the negative pressure space. The existing negative pressure conveying mostly uses a pipeline as a conveying tool, but due to the different lengths of conveying paths and the actual situation of a field, the pipeline adaptability of a fixed structure is poor, and once blockage occurs, the slender pipeline is difficult to process.

Disclosure of Invention

Aiming at the problems that the adaptability of the pipeline structure is poor and the pipeline structure is not easy to treat after being blocked in the existing negative pressure conveying, the utility model provides the negative pressure conveying device which is of a sectional structure and has an anti-blocking function.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a negative pressure conveyor, a plurality of unit pipes that connect gradually including the end to end, the unit pipe is provided with feed inlet and discharge gate, the end connection anti-blocking valve of the discharge gate of unit pipe, anti-blocking valve includes the valve body, the valve body is provided with air inlet and gas outlet, be provided with the spring in the valve body, the air inlet and the gas outlet mutual disposition of valve body, the air inlet of valve body and the length direction of the line direction parallel spring of gas outlet, the one end of spring and the gas outlet place end contact of valve body, the other end vertical connection of spring has the case, the case covers the air inlet and with air inlet place end contact. The unit pipe is used for forming a negative pressure space to convey materials, when the unit pipe is blocked, the negative pressure inside the device is increased, the valve core is under the action of negative pressure, the spring resistance is overcome to move and open the air inlet, the outside air enters the device from the gap between the valve core and the air inlet, the concentration of the materials in the device is reduced, the negative pressure inside the conveying device is reduced, the blocked part is blown in the opposite direction of material conveying through the entering device which enables the materials to be fewer, and therefore the anti-blocking effect is achieved.

Preferably, a plurality of unit pipes connected end to end in sequence form a first conveying pipe, and the feeding end of the first conveying pipe is connected with a hopper. Form first conveyer pipe through the unit pipe, form the segmentation and prevent stifled, prevent stifled better effect, find out easily and prevent stifled position to be convenient for arrange first conveyer pipe, can adapt to more types of place, carry out the feed through the hopper, the hopper is the infundibulate, and the feed is efficient, is difficult to scatter.

Preferably, the discharge end of the first conveying pipe is connected with a second conveying pipe, the second conveying pipe is connected with the top of the storage bin, and the storage bin is provided with a negative pressure fan. The negative pressure fan is used as a power device to form internal negative pressure to transport materials, and the second conveying pipe is used for guiding the materials to the top of the storage bin and feeding the materials from the top of the storage bin.

Preferably, the feed end of the first conveying pipe is further connected with a vent pipe, a filter assembly is arranged in the vent pipe, and the hopper is located between the vent pipe and the first conveying pipe. Outside air is through receiving negative pressure effect internal flow, drives the material simultaneously and transports along first conveyer pipe, and filter assembly can filter the air that gets into, sneaks into other impurity in the prevention material.

Preferably, a drying component is arranged between the first conveying pipe and the hopper, and the vent pipe, the hopper, the drying component and the first conveying pipe are arranged in sequence. The materials are dried by the drying component, so that the materials are not easy to adhere together and block.

Preferably, the valve core is vertically connected with a positioning shaft, and the positioning shaft is positioned inside the spring. The valve core and the spring are prevented from deviating to cause air leakage of the anti-blocking valve.

The beneficial effect of the utility model is that,

1. the first conveying pipe is split into the plurality of unit pipes, the flexibility of arrangement and use of the first conveying pipe is improved, the anti-blocking valve is arranged on each unit pipe, segmented anti-blocking is achieved, the anti-blocking effect is effectively improved, and the blocking position can be found out rapidly.

2. The anti-blocking valve adopts the pressure of spring to resist the negative pressure to support the case in air inlet department, when the device is inside to take place to block up, the negative pressure is greater than spring pressure, and the case breaks away from the air inlet under the negative pressure effect, makes gaseous replenishment to the device inside, reduces inside negative pressure and inside material concentration, makes inside delivery capacity reduce, blows towards the opposite direction of material transport simultaneously and blocks up the department, reaches clear stifled effect.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a sectional view of an anti-blocking valve according to an embodiment of the present invention.

Fig. 3 is a schematic view of a unit tube and an anti-blocking valve in an embodiment of the present invention.

In the figure: 1. the device comprises a vent pipe, 2, a hopper, 3, a unit pipe, 4, an anti-blocking valve, 5, a second conveying pipe, 6, a storage bin, 7, a negative pressure fan, 8, an air inlet, 9, a valve core, 10, a spring, 11, a positioning shaft, 12, an air outlet, 13, a feeding hole, 14, a discharging hole, 15, a valve body, 16 and a dryer.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, a negative pressure conveying device comprises a storage bin 6, a negative pressure fan 7 is arranged at the top of the storage bin 6, air in the conveying device is drawn out to form a negative pressure space, and materials are conveyed through externally and internally supplemented gas. The top of storage storehouse 6 still is provided with second conveyer pipe 5, the exit linkage storage storehouse 6 of second conveyer pipe 5, the entry of second conveyer pipe 5 is located 6 bottom height or ground height in storage storehouse, the export of the first conveyer pipe of entry linkage of second conveyer pipe 5, the entry of first conveyer pipe is through tee junction hopper 2 and breather pipe 1, set up the filter core in the breather pipe 1, prevent to contain impurity in the gas of transported substance material, sneak into in the material, hopper 2 is located between breather pipe 1 and the first conveyer pipe, set up desicator 16 between hopper 2 and the first conveyer pipe, carry out drying process to the material, make it be difficult for blockking up, breather pipe 1, hopper 2, desicator 16 and first conveyer pipe arrange in proper order.

First conveyer pipe includes three unit pipes 3 that connect gradually end to end, and the discharge gate of adjacent unit pipe 3 is connected to the feed inlet of unit pipe 3, and the end connection of the discharge gate of unit pipe 3 has anti-blocking valve 4. Anti-blocking valve 4 includes vertical columniform valve body 15, the inside cylindrical cavity that sets up of valve body 15, the top and the bottom of valve body 15 are provided with air inlet 8 and the gas outlet 12 of this cavity of intercommunication respectively, air inlet 8 and gas outlet 12 are circular and mutual disposition, there is spring 10 in the valve body 15, the parallel feed inlet 13 of length direction and the line direction of discharge gate 14 of spring 10, spring 10 is located valve body 15 with the shrink state, when the pressure that spring 10 shrink produced equals the device transported substance material, the inside negative pressure of device. One end of the spring 10 abuts against the inner end face of one end of the valve body 15 where the air outlet 12 is located, the other end of the spring 10 is vertically connected with the valve core 9, the valve core 9 is circular and has a diameter larger than that of the air inlet 8, the valve core 9 can cover the air inlet 8 to block the air inlet 8, and the valve core 9 abuts against the inner end face of one end of the valve body 15 where the air inlet 8 is located; the valve core 9 is connected with a positioning shaft 11, the positioning shaft 11 is located inside the spring 10, and the length of the positioning shaft 11 is greater than that of the spring 10 and extends into the air outlet 12, so as to prevent the air leakage of the anti-blocking valve 4 caused by the deviation of the positions of the spring 10 and the valve core 9.

First pipeline also can be formed by unit pipe 3 and ordinary pipe connection, and is decided according to particular case, like the material of material, the turning that first conveyer pipe was arranged is how much, easy jam degree etc. and desicator 16, filter core and negative-pressure air fan 7 do not take out the material from storage silo 6 and are prior art, no longer describe herein.

The working process of the utility model is that the negative pressure fan 7 is started to pump out the air in the storage bin 6, the second delivery pipe 5 and the first delivery pipe, negative pressure is formed in the device, the external air flows into the device through the vent pipe 1 for supplement, and most impurities are removed through the filter element; the material is fed from the hopper 2 into the first conveyor pipe and after being dried by the dryer 16, the material is transported by the air flow into the storage bin 6. When the material takes place to block up in first conveyer pipe, inside because there is not the gaseous negative pressure increase that leads to of flow in the replenishment, when the negative pressure is greater than the static pressure in valve body 15 of spring 10, the resistance of spring 10 is overcome to the outer gas of anti-blocking valve 4, promote the valve core 9 downwards and make it break away from air inlet 8 to flow into first conveyer pipe through air inlet 8, reduce inside negative pressure and material concentration, reduce the transportation volume of material, blow the jam department to the opposite direction of material transport simultaneously, reach clear stifled effect.

Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. The negative pressure conveying device is characterized by comprising a plurality of unit pipes (3) which are sequentially connected end to end, wherein the unit pipes (3) are provided with a feed inlet (13) and a discharge outlet (14), the end parts of the discharge outlets (14) of the unit pipes (3) are connected with an anti-blocking valve (4), the anti-blocking valve (4) comprises a valve body (15), the valve body (15) is provided with an air inlet (8) and an air outlet (12), a spring (10) is arranged in the valve body (15), the air inlet (8) and the air outlet (12) of the valve body (15) are oppositely arranged, the connecting line direction of the air inlet (8) and the air outlet (12) is parallel to the length direction of the spring (10), one end of the spring (10) is in contact with the end part where the air outlet (12) of the valve body (15) is located, and the other end of the spring (10) is vertically connected with a valve core (9), the valve core (9) covers the air inlet (8) and is in contact with the end where the air inlet (8) is located.

2. The negative-pressure conveying device as claimed in claim 1, wherein a plurality of unit pipes (3) connected end to end in sequence are connected to form a first conveying pipe, and the feeding end of the first conveying pipe is connected with the hopper (2).

3. The negative-pressure conveying device according to claim 2, characterized in that the discharge end of the first conveying pipe is connected with a second conveying pipe (5), the second conveying pipe (5) is connected with the top of the storage bin (6), and the storage bin (6) is provided with a negative-pressure fan (7).

4. The negative pressure conveying device according to claim 2 or 3, wherein the feeding end of the first conveying pipe is further connected with a vent pipe (1), a filter assembly is arranged in the vent pipe (1), and the hopper (2) is positioned between the vent pipe (1) and the first conveying pipe.

5. The negative-pressure conveying device according to claim 4, characterized in that a drying assembly is arranged between the first conveying pipe and the hopper (2), and the vent pipe (1), the hopper (2), the drying assembly and the first conveying pipe are arranged in sequence.

6. Negative pressure delivery device according to claim 1 or 2, wherein the valve element (9) is vertically connected with a positioning shaft (11), and the positioning shaft (11) is positioned inside the spring (10).

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