CN1448324A - Particle conveyer - Google Patents

Abstract

The present invention discloses a particle conveyer which is mainly composed of a feeding hopper for storing material, a particle congeries forming part connected to the feeding hopper, a supply pipe connected to the particle congeries forming part for supplying air pressure to material and a first air supply part and a second air supply part for applying pressure to the material filled in the particle congeries forming part. The particle conveyer provided in the present invention can solve the block problem for the material in the supply pipe by controlling the air pressure of the first air supply part and the second air supply part and a method of air supply mode, thereby can finish filling the particle congeries with high efficiency during the process for feeding the particle congeries, and can execute air pressure feeding with high efficiency in order to reduce the material waste and pulverization problem, thereby can endure the reliability for the air pressure feeding for the particle congeries.

Description

Powder body feedway

Technical field

The present invention relates to a kind of powder body feedway, particularly relating to a kind of is that the powder material aggregation carries out the powder body feedway that air pressure is carried again with forming materials.

Background technology

As everyone knows, powder material aggregation carrying method is that a kind of profit is the carrying method that air pressure is carried powder shape material.This carrying method be in delivery pipe, air buffer is placed in by powder shape material form and evenly distributed successively single powder material aggregation between, the mode of utilizing air pressure to carry is then transmitted, thereby can prevent that material from resulting in blockage in delivery pipe, thereby can realize a kind of method that low speed, high concentration are carried.Yet, in order to carry out the moulding of powder material aggregation, it is that delivery pipe is carried material that this method needs each container as prescribed amount on delivery source, and this container generally all is equipped with the rotation opening closing valve, opening and closing the valve material that the moulding of powder material aggregation is required repeatedly by batch (-type) quantitatively carries in delivery pipe, and utilize the pressure of pressure sending type blower fan generation to form air buffer between each powder material aggregation in the delivery pipe, carry out air pressure then successively and carry.But in this process, owing to can be in contact with one another with the material of carrying during this valve opening and closing, thereby can make material production loss and powder phenomenon-tion; And material being carried out air pressure when carrying with blower fan, the spillage of material and the pulverizing problem that constantly rub and cause because of material and delivery pipe also can appear.

Summary of the invention

In order to address the above problem, the object of the invention is to provide a kind of powder body feedway that reduces spillage of material and pulverizing problem.

In order to achieve the above object, powder body feedway provided by the invention mainly by the feed hopper of restorative material, the powder material aggregation forming part that links to each other with feed hopper, be connected with powder material aggregation forming part and can carry out the delivery pipe that the air pressure of material carries and can be first gas supply part and second gas supply part that the material that is filled in powder material aggregation forming part pressurizes forming; Described first gas supply part and second gas supply part the air pressure of confession, if only from wherein side's voltage supply, then can not satisfy from powder material aggregation forming part and carry the required delivery pressure of material to delivery pipe; And, can satisfy above-mentioned required delivery pressure if by first gas supply part and second gas supply part, two sides voltage supply simultaneously, therefore respectively the air pressure of two gas supply parts is set; When the moulding of powder material aggregation, make first gas supply part and second gas supply part, two sides pressurization; In the interim of each powder material aggregation moulding, make a certain side of first gas supply part or second gas supply part stop voltage supply at least, thus the conveying of control powder material aggregation.

Described first gas supply part is connected feed hopper, and second gas supply part is connected powder material aggregation forming part.

When conducting powder grain thing aggregation is carried, the continuous voltage supply of described first gas supply part, and the second gas supply part batch (-type) voltage supply.

Described first gas supply part and second gas supply part are connected powder material aggregation forming part simultaneously.

When conducting powder grain thing aggregation was carried, described first gas supply part and second gas supply part carried out the batch (-type) voltage supply simultaneously.

Be provided with the pressure detector that can detect the delivery pipe internal pressure in the described delivery pipe, and on basis, control with this pressure detector detected pressures first gas supply part and (or) voltage supply of second gas supply part.

Described delivery pipe is shape in the shape of a spiral.

Powder body feedway provided by the invention can solve the blockage problem of carrying intraductal material by the method for controlling first gas supply part and the second gas supply part amount of gas pressure and plenum system, thereby in the process of formation and conveying powder material aggregation, can finish the filling of powder material aggregation by high efficiency, and carry out efficiently air pressure and carry, with the loss and the pulverizing problem of minimizing material, thereby it is reliable to guarantee that powder material aggregation air pressure is carried.Even also can carry the powder material aggregation without restriction under the narrow and small relatively situation of conveying space in the horizontal direction at vertical direction.

Description of drawings

Below in conjunction with the drawings and specific embodiments powder body feedway of the present invention is elaborated.

Fig. 1 is the powder body feedway first example structure scheme drawing of the present invention.

Fig. 2 is that first control cock and second control cock of the powder body feedway among Fig. 1 opens and closes time cycle contrast figure.

Fig. 3 is the powder body feedway second example structure scheme drawing of the present invention.

Fig. 4 is that first control cock and second control cock of the powder body feedway among Fig. 3 opens and closes time cycle contrast figure.

Fig. 5 is the another kind of embodiment structural representation of the powder body feedway among Fig. 1.

The specific embodiment

As shown in Figure 1, powder body feedway provided by the invention 1 mainly by storage bin(hopper) 2, as storagetank feed hopper 3, gas supply part 4, powder material aggregation forming part 5, delivery pipe 6, dust separator 7 and reclaim hopper 8 and form.Described storage bin(hopper) 2 comprises storage vessel 9, connection pipe 10 and feed control cock 11.It is cylindrical and the bottom is funnelform structure that storage vessel 9 has top, be equipped with in it and need carry out the powder and granular material that the powder material aggregation is carried usefulness, for example fragile and efflorescence such as the sugar coated tablet in medicine and the field of food, granule, soft capsule, thereby the material of necessary handled; Connection pipe 10 is to extend downwards and form from the bottom of storage vessel 9, and its lower end is connected with the supply container 12 of feed hopper 3.Feed control cock 11 then is positioned at the middle part of connection pipe 10, and when it was in opening, the material of storage can enter into supply container 12 by connection pipe 10 in the storage vessel 9, and when it is in closed condition, then stops the conveying of material.When the material of storing in the feed hopper 3 reduced to a certain amount of owing to the conveying of powder material aggregation, storage bin(hopper) 2 just can offer feed hopper 3 to supply the quantity that is reduced in the feed hopper 3 with the material of storing in it by the unlatching of feed control cock 11.The inside of feed hopper 3 is to be made of airtight Pressure Container, and it comprises supply container 12 and feed pipe 13.It is cylindrical and the bottom is funnelform structure that supply container 12 also has top, and a certain amount of material that is provided by storage bin(hopper) 2 can temporarily be provided in it; And feed pipe 13 is to extend downwards and form from the bottom of supply container 12, and its lower end is connected with powder material aggregation forming part 5.Gas supply part 4 comprises the blower fan 14 as air supply source, first gas supply part 15 that links to each other with feed hopper 3 and second gas supply part 16 that joins with powder material aggregation forming part 5.First gas supply part 15 is made up of first compressed air line 17 and first control cock 18.One end of first compressed air line 17 is connected with the top of feed hopper 3, its other end then with second compressed air line 19 on the centre a bit join.First control cock 18 is installed on first compressed air line 17, and the switching of its may command first compressed air line 17 and adjusting blower fan 14 offer the air pressure of feed hopper 3 through first compressed air line 17.Second gas supply part 16 is made up of second compressed air line 19 and second control cock 20.One end of second compressed air line 19 is connected with powder material aggregation forming part 5, and its other end then is connected with blower fan 14.The centre that second control cock 20 is installed in second compressed air line 19 a bit, it can be used for controlling the switching of second compressed air line 19 and regulates blower fan 14 offers powder material aggregation forming part 5 through second compressed air line 19 air demand.Powder material aggregation forming part 5 in a tubular form, the one end is connected with the feed end of delivery pipe 6, its other end then is connected with second compressed air line 19, that is, and and delivery pipe 6 and second compressed air line, the 19 relative two ends that are connected powder material aggregation forming part 5.In addition, an end of the powder material aggregation forming part 5 that links to each other with second compressed air line 19 top also is connected with feed pipe 13 simultaneously.Delivery pipe 6 is straight tube-like, and it is obliquely installed with the gradient that is preferably below 30 ° below 50 °.The feed end of delivery pipe 6 is connected with powder material aggregation forming part 5, and its mouth then is connected with dust separator 7.In addition, on this pipe, several pressure detectors 21 have been installed for the pressure that detects delivery pipe 6 by setting spacing.Dust separator 7 is a kind of gas-solid separation devices, and its sidewall is connected with the discharge end of delivery pipe 6, and its top links to each other with exhaust system 22, and its underpart then joins with recovery hopper 8.It is basic identical with the structure of storage bin(hopper) 2 to reclaim hopper 8, also is to be used for storing a kind of device that is transferred material.Blower fan 14, first control cock 18, second control cock 20 and each pressure detector 21 in the powder body feedway 1 of the present invention all is connected with CPU 23 as control setup.These devices all are to finish powder material aggregation course of conveying under the control of CPU23.Below, the powder material aggregation course of conveying that the control by CPU 23 is realized is elaborated.Before the conducting powder grain thing aggregation course of conveying, at first on CPU23, configure the amount of gas pressure that should provide from first compressed air line 17 and second compressed air line 19.This amount of gas pressure is to be standard with the delivery pressure that can carry material in delivery pipe 6.As single side pressurization from first compressed air line 17 or second compressed air line 19, then can not satisfy required delivery pressure, therefore, should set respectively, come voltage supply by first compressed air line 17 and 19 liang of sides of second compressed air line in order to satisfy delivery pressure.And, also should be that friction coefficient waits and suitably adjusts delivery pressure according to the kind of internal diameter, the gradient, fed distance and the material of delivery pipe 6.Simultaneously, according to concrete device condition, be the proper proportion that benchmark is determined first compressed air line 17 and second compressed air line, 19 internal gas pressure amounts with its delivery pressure.That is, the air pressure of first compressed air line 17 and second compressed air line 19 is to set to the air quantity control of blower fan 14 and to pressure (opening degree) adjustment of first control cock 18 and second control cock 20 according to CPU23.CPU23 is exactly the switching of controlling first control cock 18 and second control cock 20 according to the time cycle as shown in Figure 2, and according to each amount of gas pressure that has configured, provide air by first compressed air line 17 and second compressed air line 19, form the powder material aggregation with batch (-type), and in delivery pipe 6, the powder material aggregation is carried.That is, as shown in Figure 2, when beginning to carry the powder material aggregation, at first open first control cock 18.At this moment, first compressed air line 17 just can provide air for feed hopper 3 according to pre-set air pressure, at this moment, the material of storing in the feed hopper 3 is just shifted to powder material aggregation forming part 5 under the effect of this air pressure, and is filled in the powder material aggregation forming part 5.But, owing to only when first compressed air line 17 comes voltage supply, can not satisfy required delivery pressure,, only form material and be filled in delay state in the powder material aggregation forming part 5 so material can not be transported to delivery pipe 6 from powder material aggregation forming part 5.Then, first control cock 18 still is in opening, and second control cock 20 then is in the batch (-type) open and-shut mode.Like this, when second control cock 20 was in opening, second compressed air line 19 just can provide pressure for it according to the force value that powder material aggregation forming part 5 configures, thereby the material that will be filled in the powder material aggregation forming part 5 is pushed delivery pipe 6 to.And, because first compressed air line 17 and second compressed air line 19 all provide enough pressure, thus the powder material aggregation can be formed, and it is carried along delivery pipe 6.And when second control cock 20 is in closure state, 19 of second compressed air lines stop to provide air to powder material aggregation forming part 5, still only come voltage supply, again the material of storing in the feed hopper 3 is filled in the powder material aggregation forming part 5 by first compressed air line 17.Batch (-type) by second control cock 20 just opens and closes and can order transfer out the powder material aggregation from powder material aggregation forming part 5, and when second control cock 20 is in opening, that is, during the moulding of powder material aggregation, it is carried in delivery pipe.And when second control cock 20 is in closed condition, promptly, the interim of each powder material aggregation moulding, it is in halted state in delivery pipe 6, simultaneously, between each powder material aggregation, be formed with intervenient air buffer again, thereby can in delivery pipe 6, the powder material aggregation be carried out the pulsation-free Ultra-Low Speed and carry (as: below the 5m/sec).Subsequently, be transported to that material in the delivery pipe 6 enters in the dust separator 7 and with air separation after be stored to the recovery hopper 8 that is connected dust separator 7 bottoms again.Simultaneously, the air of separating from material that is mingled in the dust separator 7 is then discharged by exhaust gear.In carrying powder material aggregation process, carry required pressure because reduced, so can realize the course of conveying that air consumption is little, cost is low.And, can make the air of discharge be difficult for producing dust, thereby can keep the cleaning of environment because free air capacity is few.Because this powder material aggregation conveying method only depends on CPU 23 to control the switching of first control cock 18 and second control cock 20, just can be successively with the moulding of powder material aggregation, conveying, therefore need not on the feed pipe 13 of feed hopper 3, to install the open and close type valve additional, promptly utilize the switching of this valve to come to provide its required a certain amount of material for powder material aggregation forming part 5, and then form the powder material aggregation, so just can avoid the spillage of material and the pulverizing problem that contact and bring with the open and close type valve owing to material.In addition, when carrying the powder material aggregation successively in delivery pipe 6, its interior delivery pressure reaches required amount during as if the moulding of powder material aggregation, then carries; And if not enough its required amount of delivery pressure in the interim of each powder material aggregation moulding then ends to carry.Promptly, because the termination when conveying when carrying out the moulding of powder material aggregation repeatedly and powder material aggregation moulding interval is carried, thereby can utilize this Ultra-Low Speed mode of movement to prevent the continuous friction of material and delivery pipe, therefore, the loss or the pulverizing problem of material in the powder material aggregation course of conveying have been reduced.In addition, even it is transported to also can not make the degree that delivery pipe 6 stops up in the delivery pipe 6 time continuously when material remaining in the feed hopper 3 reduces to, as shown in Figure 2, can make first control cock 18 and second control cock 20 continue to be in opening, at this moment the material of remnants can be carried out disposable air pressure and carry.That is to say that first compressed air line, 17 pressurizations as from powder body feedway 1 shown in Figure 1 can be filled into the material that is stored in the feed hopper 3 in the powder material aggregation forming part 5; And, then can make the material that is filled in the powder material aggregation forming part 5 form the powder material aggregation as from 19 pressurizations of second compressed air line, be transported to again in the delivery pipe 6.Therefore, material efficiently can be filled to the powder material aggregation, again it efficiently be carried out air pressure and carry.In carrying powder material aggregation process, control by CPU23 can make the 17 continuous voltage supply of first compressed air line, the 19 intermittently voltage supply of second compressed air line, the material of storing in the feed hopper 3 just can constantly be pushed to and be filled in the powder material aggregation forming part 5 like this, batch (-type) voltage supply by second compressed air line 19 makes it form the powder material aggregation successively then, the promoting the circulation of qi of going forward side by side is pressed and is carried, therefore, can finish the conveying of powder material aggregation reliably.In addition, this control method has also been carried out suitable setting to the unlatching and the shut of second control cock 20, and, as mentioned above, the air pressure that is provided by first compressed air line 17 is the capacity according to feed hopper 3, set to the pressure of powder material aggregation forming part 5 actual pressurizations with the material stored in the feed hopper 3, and, set the pressure that second compressed air line 19 provides according to the air pressure size that first compressed air line 17 is set.When utilizing powder body feedway 1 shown in Figure 1 to carry out the conveying of powder material aggregation, as the obstruction that occurs in the delivery pipe 6 causing by material, then be located at the square on the lower side pressure detector 21 of part that gets clogged in the delivery pipe 6 and just can detect the pressure decay value that causes owing to blocking, CPU23 then can suitably control the air demand of first compressed air line 17 and second compressed air line 19 to eliminate obstruction according to its testing result.More particularly, CPU 23 can utilize the method that always continues to make first control cock 18 and second control cock 20 be in opening to eliminate the problem that pressure reduces, perhaps utilize to change the increased pressure that method that first control cock 18 and second control cock, 20 pressure set is provided first compressed air line 17 and second compressed air line 19, utilize these methods, also can eliminate immediately even occur the clogged with material situation in the delivery pipe 6, thereby can guarantee that powder material aggregation course of conveying is good.

In powder body feedway 1 shown in Figure 1, first compressed air line 17 of first gas supply part 15 is to be connected with feed hopper 3, and second compressed air line 19 of second gas supply part 16 is to be connected with powder material aggregation forming part 5.Can also as shown in Figure 3 first compressed air line 17 of first gas supply part 15 and second compressed air line 19 of second gas supply part 16 be connected with powder material aggregation forming part 5 simultaneously.That is, as shown in Figure 3, an end and the powder material aggregation forming part 5 of first compressed air line 17 of powder body feedway 1 are joined, and powder material aggregation forming part 5 also is connected with an end of delivery pipe 6 at the position.The other end of first compressed air line 17 a bit is connected with centre on second compressed air line 19.That is, first compressed air line 17 and second compressed air line 19 are connected with two sides of powder material aggregation forming part 5 respectively.In addition, powder body feedway 1 shown in Figure 3 is except that These characteristics, and is identical with powder body feedway 1 structure shown in Figure 1, and used the symbol identical with Fig. 1, omits its explanation of carrying out at this.In powder body feedway 1 shown in Figure 3, CPU23 is according to time gap shown in Figure 4 switching by first control cock 18 and second control cock 20, and according to the different amount of gas pressure of setting, carry out air feed from first compressed air line 17 and second compressed air line 19, in powder material aggregation forming part 5, intermittently form the powder material aggregation, and in delivery pipe 6, finish powder material aggregation course of conveying.As shown in Figure 4, when carrying the powder material aggregation, first control cock 18 and second control cock 20 are in the batch (-type) open and-shut mode simultaneously.When first control cock 18 and second control cock 20 are in opening, first compressed air line 17 and second compressed air line 19 will be according to the amount of gas pressure of setting separately to powder material aggregation forming part 5 air feed, and the material in being filled in powder material aggregation forming part 5 is exerted pressure and pushed it against in the delivery pipe 6.And be filled in the material in the powder material aggregation forming part 5, so can form the powder material aggregation and conveying in delivery pipe 6 owing to be subjected to from first compressed air line 17 and 19 liang of enough pressure that the side applied of second compressed air line.In addition, when first control cock 18 and second control cock 20 are closed simultaneously, first compressed air line 17 and second compressed air line 19 be corresponding stopping to powder material aggregation forming part 5 air feed simultaneously also, at this moment, be stored in material in the feed hopper 3 and will rely on its deadweight and fall, and be filled in the powder material aggregation forming part 5.Batch (-type) by first control cock 18 and second control cock 20 opens and closes, and the powder material aggregation just can be sent from powder material aggregation forming part 5 successively.When first control cock 18 and second control cock 20 are in opening, at first carry out the moulding of powder material aggregation, it is sent in the delivery pipe 6 then; And when first control cock 18 and second control cock 20 are in closed condition, it is the interim of each powder material aggregation moulding, the motion of powder material aggregation in delivery pipe 6 stops, at this moment can between each powder material aggregation, form air buffer A, thereby in delivery pipe 6, realize steadily conveying of Ultra-Low Speed (for example: below the 5m/sec).Therefore, identical with the content of above elaboration, this powder material aggregation mode of movement also is to utilize CPU23 to control the switching of first control cock 18 and second control cock 20, will wait to carry material to form the powder material aggregation successively, and then carry.So, there is no need on the feed pipe 13 of feed hopper 3, to install the open and close type valve, promptly utilize the switching of this valve to come to form the required a certain amount of material of powder material aggregation, so just can avoid the loss and the pulverizing problem that contact and bring with the open and close type valve because of material for powder material aggregation forming part 5 provides.In delivery pipe 6, carry successively in the process of powder material aggregation, when the moulding of powder material aggregation,, then carry if delivery pressure satisfies its required amount of pressure.In the interim of each powder material aggregation moulding, because not enough its aequum of delivery pressure, thereby conveying stops.Promptly, the termination of conveying when carrying out the moulding of powder material aggregation repeatedly and powder material aggregation moulding interim is carried, therefore this method is a kind of course of conveying of Ultra-Low Speed, thereby can prevent the continuous friction of delivery pipe and material, thereby be reduced in the loss and the efflorescence of material in the powder material aggregation course of conveying.In this device, when even remaining material reduces to it is transported to the degree that also can not make its obstruction in the delivery pipe 6 continuously in the feed hopper 3, as shown in Figure 4, can make first control cock 18 and second control cock 20 continue to be in opening, at this moment the material of remnants once all can be carried.In powder body feedway 1 shown in Figure 3, first compressed air line 17 and second compressed air line 19 all are connected with powder material aggregation forming part 5 simultaneously.When first control cock 18 and second control cock 20 are in opening, the voltage supply simultaneously of first compressed air line 17 and second compressed air line 19, it can make the material that is filled in the powder material aggregation forming part 5 form the powder material aggregation and be transported in the delivery pipe 6.Therefore, can guarantee that the air pressure course of conveying is reliable.And when carrying the powder material aggregation, control by CPU23, carry out the batch (-type) voltage supply simultaneously from first compressed air line 17 and second compressed air line 19, the material of filling in the powder material aggregation forming part 5 is exerted pressure, and be transported in the delivery pipe 6.Therefore, can guarantee that the course of conveying of powder material aggregation is more effective.In addition, this control method has also been done suitable setting to the unlatching and the shut of first control cock 18 and second control cock 20.And, as mentioned above, also the air pressure that first compressed air line 17 and second compressed air line 19 are provided has carried out suitable setting, generally speaking, compare with the air pressure that first compressed air line 17 provides, it is higher that the air pressure that second compressed air line 19 is provided is set.In addition, the delivery pipe 6 in Fig. 1 and the powder body feedway 1 shown in Figure 3 all is a straight tube-like, also can make delivery pipe 6 shape in the shape of a spiral as shown in Figure 5.Promptly carry under the situation of powder material aggregation,, then can occur to guarantee to stablize the situation of conveying owing to the action of gravity of material if the gradient of delivery pipe 6 is excessive at vertical direction.And if delivery pipe 6 changes the gradient in the way therein, then the friction drag of delivery pipe 6 and storeroom will change, and causes the powder material aggregation to damage thus, and causes the obstruction of material.Therefore, as mentioned above, when carrying out vertical direction conveying powder material aggregation, be necessary the gradient of delivery pipe 6 is arranged to a less definite value.Yet, when the conveying space of horizontal direction narrow and small and wish that when vertical direction is carried the powder material aggregation in a large number the straight tube-like delivery pipe 6 shown in Fig. 1 and Fig. 3 just is difficult to carry out the powder material aggregation and carries because of the gradient is excessive.Therefore, in this case, as shown in Figure 5, delivery pipe 6 can be made the spiral fashion of vertically upwards spiraling,, also can finish the conveying of powder material aggregation without restriction at vertical direction even the conveying space of horizontal direction is narrower and small like this.In addition, powder body feedway 1 shown in Figure 5 is except that These characteristics, all the other all construct identical (just having omitted the diagram part to pressure detector 21) with powder body feedway 1 shown in Figure 1, and have used the symbol identical with Fig. 1, so omit specifying that it carries out at this.In addition, in the middle of above explanation, first compressed air line 17 in the powder body feedway 1 shown in Figure 1 is connected with the top of feed hopper 3, and second compressed air line 19 is connected with a side end of powder material aggregation forming part 5.First compressed air line 17 in the powder body feedway 1 shown in Figure 3 and second compressed air line 19 are connected with two ends of powder material aggregation forming part 5 respectively.The point of connection of first compressed air line 17 and second compressed air line 19 is not only limited to above-mentioned a few place, for example, first right compression conduit 17 can be connected with feed pipe 13, simultaneously, the side end of second compressed air line 19 with powder material aggregation forming part 5 be connected.First compressed air line 17 and second compressed air line 19 can also be connected with a side end of powder material aggregation forming part 5 simultaneously.Can suitably select according to the purpose and the purposes of producing.In addition, also several first compressed air lines 17 and second compressed air line 19 can be set respectively on first gas supply part 15 and second gas supply part 16, for example, one end of two first compressed air lines 17 can be connected respectively on the side of the top of feed hopper 3 and powder material aggregation forming part 5, again one second compressed air line 19 another side with powder material aggregation forming part 5 be connected.The device that air pressure is provided such as blower fan 14 etc. also can be set respectively on first gas supply part 15 and second gas supply part 16.Be not limited only to foregoing method aspect the setting of first compressed air line 17 and second compressed air line, 19 air demands, for example, the mode of available prior manual regulation is set the pressure (opening degree) of first control cock 18 and second control cock 20.In addition, the mode of also available prior adjusting blower fan 14 air quantity is set.In powder body feedway 1 shown in Figure 1, control by CPU23 can make first compressed air line 17 continue voltage supply, and make the 19 batch (-type) voltage supply of second compressed air line, also can adopt opposite method, promptly, second compressed air line 19 continues voltage supply, and the 17 batch (-type) voltage supply of first compressed air line.Also having a kind of method is to make first compressed air line 17 and second compressed air line 19 carry out the batch (-type) voltage supply simultaneously.In powder body feedway 1 shown in Figure 3, control by CPU23 can make first compressed air line 17 and second compressed air line 19 carry out the batch (-type) voltage supply simultaneously, also can make first compressed air line 17 continue voltage supply, and the 19 batch (-type) voltage supply of second compressed air line, or employing and above-mentioned opposite method, that is, make second compressed air line 19 continue voltage supply, and the 17 batch (-type) voltage supply of first compressed air line.

Claims (7)

1, a kind of powder body feedway is characterized in that: described powder body feedway (1) mainly by the feed hopper (3) of restorative material, the powder material aggregation forming part (5) that links to each other with feed hopper (3), be connected with powder material aggregation forming part (5) and the delivery pipe (6) and can be that can carry out the air pressure conveying of material is filled in first gas supply part (15) and second gas supply part (16) that the interior material of powder material aggregation forming part (5) pressurizes and forms; Described first gas supply part (15) and second gas supply part (16) the air pressure of confession, if only from wherein side's voltage supply, then can not satisfy from powder material aggregation forming part (5) and carry the required delivery pressure of material to delivery pipe (6); And, can satisfy above-mentioned required delivery pressure if by first gas supply part (15) and second gas supply part (16) two sides voltage supply simultaneously, therefore respectively the air pressure of two gas supply parts (15,16) is set; When the moulding of powder material aggregation, make first gas supply part (15) and second gas supply part (16) two sides pressurization; In the interim of each powder material aggregation moulding, make a certain side of first gas supply part (15) or second gas supply part (16) stop voltage supply at least, thus the conveying of control powder material aggregation.

2, powder body feedway according to claim 1, it is characterized in that: described first gas supply part (15) is connected feed hopper (3), and second gas supply part (16) is connected powder material aggregation forming part (5).

3, powder body feedway according to claim 2 is characterized in that: when conducting powder grain thing aggregation is carried, and described first gas supply part (15) voltage supply continuously, and second gas supply part (16) batch (-type) voltage supply.

4, powder body feedway according to claim 1 is characterized in that: described first gas supply part (15) and second gas supply part (16) are connected powder material aggregation forming part (5) simultaneously.

5, powder body feedway according to claim 4 is characterized in that: when conducting powder grain thing aggregation was carried, described first gas supply part (15) carried out the batch (-type) voltage supply simultaneously with second gas supply part (16).

6, according to each described powder body feedway in the claim 1～5, it is characterized in that: be provided with the pressure detector (21) that can detect delivery pipe (6) internal pressure in the described delivery pipe (6), and on basis, control with this pressure detector (21) detected pressures first gas supply part (15) and (or) voltage supply of second gas supply part (16).

7, according to each described powder body feedway in the claim 1～5, it is characterized in that: described delivery pipe (6) is shape in the shape of a spiral.

Images