JP2006240778A - Carrying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve quantitativeness performance, and achieve stable carrying by setting the carrying capacity to be gradually smaller from a supply port of a casing to a discharge port, so that carried matter is compacted at the discharge port to be discharged out of the casing. <P>SOLUTION: This carrying device is provided with the casing 2 having the supply port 4 at one end, and the discharge port 5 at the other end, and a screw carrier 10 to carry the carried matter supplied from the supply port 4 into the casing 2 to be carried in the casing 2 to be guided to the discharge port 5. The screw carrier 10 is composed of an outer screw blade 12, and an inner screw blade 13 of a reverse spiral to the outer screw blade 12. Both screw blades 12 and 13 are driven to rotate in the opposite directions to each other. The carrying capacity per rotation of the screw blades 12 and 13 is set to be gradually smaller from the supply port 4 to the discharge port 5. The carried matter carried in the casing 2 is gradually compacted as it goes toward the discharge port 5, and it is compacted along the whole cross section around the discharge port 5, in which state it is discharged from the discharge port 5 out of the casing 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a transport device that transports a transported object such as a granular material, and particularly relates to a transport device that uses a screw for transporting a transported object.

  As an example of a transport device for transporting a transported object such as a granular material, a cylindrical or tapered casing having a supply port at one end and a discharge port at the other end is different from each other and provided rotatably in the casing. 2. Description of the Related Art A conveyance device including a screw conveyance body having a pair of screw blades that can rotate in a direction has been proposed.

For example, the conveyance devices disclosed in Patent Document 1 and Patent Document 2 supply a conveyed product into a casing from a supply port, and rotate and drive a screw conveyance body, thereby having a pair of spiral directions opposite to each other. The screw blades are configured to rotate in opposite directions. According to such a configuration, the conveyed product is conveyed in the casing toward the discharge port by the cooperation of both screw blades, and is discharged from the discharge port to the outside of the casing.
Japanese Patent Laid-Open No. 2001-220010 Japanese Patent Application Laid-Open No. 2002-68483

  By the way, in the conveying apparatus having the above-described configuration, when the conveyed product is intermittently supplied to the supply port, the amount of the conveyed product conveyed in the casing varies with time. For this reason, it becomes difficult to discharge a certain amount of the conveyed product from the discharge port, and it cannot be used for applications where high quantitativeness is required.

  The present invention has been made in view of the conventional problems as described above, and can ensure the quantitativeness per unit time without being affected by the properties, weight, etc. of the conveyed product. It is an object of the present invention to provide a transport apparatus that can perform stable transport with high quantitativeness without being affected by the properties of the transported object.

In order to solve the above problems, the present invention employs the following means.
That is, the invention according to claim 1 is a casing having a supply port at one end and a discharge port at the other end, and is provided rotatably in the casing and is fed into the casing from the supply port. A screw transport body having screw blades for transporting an object through the casing and leading to the discharge port, wherein a transport volume per one rotation of the screw blade in the casing is the supply port It is characterized in that it is configured so as to gradually decrease from the outlet to the outlet.
According to the conveying device of the present invention, the volume per one pitch of the screw blades in the casing is gradually reduced from the supply port to the discharge port of the casing, so that the conveyed product conveyed in the casing moves in the direction of the discharge port. As the density gradually increases, the entire cross section is filled in the vicinity of the discharge port, and in this state, the gas is discharged from the discharge port to the outside of the casing.

The invention according to claim 2 is the transfer device according to claim 1, wherein the pitch of the screw blades is configured so as to gradually decrease from the supply port to the discharge port.
According to the conveying device of the present invention, the pitch of the screw blades of the screw conveying body is configured so as to decrease sequentially from the supply port to the discharge port of the casing, so the volume per pitch of the screw blades is the supply port of the casing. Gradually decreases from the outlet to the outlet. Therefore, the density of the conveyed product conveyed in the casing gradually increases as it moves in the direction of the discharge port, fills the entire cross section in the vicinity of the discharge port, and is discharged from the discharge port to the outside of the casing in this state. It will be.

The invention according to claim 3 is the transfer device according to claim 1 or 2, wherein the inner surface shape of the casing is formed into a shape that gradually decreases in diameter from the supply port to the discharge port, and the inner surface shape The outer shape of the screw blade is formed in a shape that matches the above.
According to the conveying device of the present invention, the inner surface shape of the casing is formed into a shape that gradually decreases in diameter from the supply port to the discharge port, and the screw blades of the screw conveying body are matched to the inner surface shape of the casing. Since the outer shape is formed, the volume per pitch of the screw blades is gradually reduced from the supply port to the discharge port of the casing. Therefore, the density of the conveyed product conveyed in the casing gradually increases as it moves in the direction of the discharge port, fills the entire cross section in the vicinity of the discharge port, and is discharged from the discharge port to the outside of the casing in this state. It will be.

The invention according to claim 4 is the transfer device according to any one of claims 1 to 3, wherein the screw transfer body is provided outside the inner screw blade and the inner screw blade. It is comprised by the outer side screw blade | wing which has a spiral of opposite direction, and the said inner side screw blade | wing and the said outer side screw blade | wing can be rotated in the mutually opposite direction, It is characterized by the above-mentioned.
According to the transport device of the present invention, the inner screw blade and the outer screw blade of the screw transport body rotate in opposite directions, so that the conveyed product does not rotate with the screw blades in the casing. It is conveyed without adhering to the blade, guided to the discharge port, and discharged from the casing through the discharge port.

The invention according to claim 5 is the transfer device according to any one of claims 1 to 4, wherein a supply means for supplying a supply object to the supply port, and a supply operation by the supply means is performed by the screw transfer body. And a control means for controlling in accordance with a load variation or a variation in the discharge amount from the discharge port.
According to the transfer device of the present invention, the supply operation of the supply unit is controlled by the control unit according to at least one of the load fluctuation of the screw carrier or the fluctuation of the weight of the passing object, and in the vicinity of the discharge port. It is possible to control the state of the conveyed product so that the entire cross section is always filled.

As described above, according to the conveying device of the first aspect of the present invention, the conveying volume per one rotation of the screw blades of the screw conveying body is configured to be gradually reduced from the supply port to the discharge port of the casing. Therefore, the density of the conveyed product that is transported in the casing gradually increases as it moves in the direction of the discharge port, and is discharged from the discharge port to the outside of the casing in a state where the entire cross section is filled at the discharge port. It will be.
Therefore, when the conveyed product is intermittently supplied to the supply port, even if the amount of the conveyed product conveyed in the casing fluctuates over time, it is possible to ensure quantitativeness per unit time. Therefore, stable conveyance with high quantitativeness can be performed regardless of the type of the conveyed product.

According to the second aspect of the present invention, the pitch of the screw blades of the screw carrier is configured so that the pitch of the screw blades gradually decreases from the supply port to the discharge port of the casing. Since it is configured so that it gradually decreases from the supply port to the discharge port of the casing, the density of the conveyed product that is transported in the casing gradually increases as it moves in the direction of the discharge port. It will be discharged | emitted out of a casing from a discharge port in the state which filled up.
Therefore, when the conveyed product is intermittently supplied to the supply port, even if the amount of the conveyed product conveyed in the casing fluctuates over time, it is possible to ensure quantitativeness per unit time. Therefore, stable conveyance with high quantitativeness can be performed regardless of the type of the conveyed product.

Furthermore, according to the conveying apparatus of claim 3, the inner surface shape of the casing is formed into a shape that gradually decreases in diameter from the supply port to the discharge port, and the screw of the screw carrier is formed into a shape that matches the inner surface shape of the casing. By forming the outer shape of the blades, the volume per one pitch of the screw blades is configured to be gradually reduced from the supply port to the discharge port of the casing. The density gradually increases as it moves in the direction, and is discharged out of the casing from the discharge port in a state where the entire cross section is filled at the discharge port.
Therefore, when the conveyed product is intermittently supplied to the supply port, even if the amount of the conveyed product conveyed in the casing fluctuates over time, it is possible to ensure quantitativeness per unit time. Therefore, stable conveyance with high quantitativeness can be performed regardless of the type of the conveyed product.

  Furthermore, according to the conveying apparatus of Claim 4, a screw conveyance body is comprised by the inner side screw blade | wing and the outer side screw blade | wing provided in the outer side of the inner side screw blade | wing and having the spiral in the direction opposite to an inner side screw blade | wing. Since the inner screw blades and the outer screw blades can rotate in opposite directions, both the screw blades and the conveyed material rotate together in the vicinity of the discharge port depending on the properties of the conveyed product, and the discharge from the discharge port is prevented. It will not be difficult or the overall density in the casing will be high and it will not be difficult to accept the conveyed item, and the conveyed item will not adhere to both screw blades, Regardless of the nature of the conveyed product, a constant amount can always be discharged from the discharge port, enabling stable and highly quantitative conveyance regardless of the properties of the conveyed product. That.

  Furthermore, according to the conveying apparatus of claim 5, the control means supplies the conveyed product to the supply port in accordance with at least one of the load variation of the screw conveying member or the variation of the weight of the conveyed material being passed. Since the supply operation by the supply means to be controlled is controlled, the state of the conveyed product at the discharge port can be controlled to be filled with the entire cross section of the discharge port regardless of the type of the conveyed product. Highly stable conveyance can be performed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a first embodiment of a transport device according to the present invention, and this transport device 1 is effective for transporting various transported objects such as powder particles, The casing 2 includes a screw carrier 10 that is rotatably provided in the casing 2, and a drive source 16 that rotationally drives the screw carrier 10.

  The casing 2 has a cylindrical shape in which both ends are closed, and is provided with a conveyance path 3 that is a cylindrical space sealed inside, and a conveyance object passes through the conveyance path 3 from one end to the other end. It is conveyed toward. A supply port 4 penetrating the inside and outside of the conveyance path 3 is provided at one end portion (left end portion in the figure) of the casing 2 in the longitudinal direction, and a conveyed product is supplied into the conveyance path 3 through the supply port 4. At the other end in the longitudinal direction of the casing 2, a discharge port 5 penetrating the inside and outside of the transport path 3 is provided so as to face a direction facing the supply port 4, and the transport in the transport path 3 is performed via the discharge port 5. The object is discharged out of the conveyance path 3.

The supply port 4 of the casing 2 is provided with a funnel-shaped hopper 6, and an opening / closing device 7 that opens and closes the supply port 4 is provided at the boundary between the hopper 6 and the supply port 4. The supply port 4 is opened and closed by the operation of.
The hopper 6 and the opening / closing device 7 constitute supply means.

  The opening / closing device 7 is not particularly limited as long as the supply port 4 can be opened and closed, and examples thereof include various dampers, rotary valves, and various electromagnetic opening / closing valves.

  The operation of the opening / closing device 7 is controlled by the control means 15. That is, the control means 15 detects at least one of the fluctuation of the current value due to the load fluctuation of the driving source 16 or the fluctuation of the weight of the transported object being passed by the detection means 20, and according to the signal from the detection means 20. Thus, the opening / closing operation of the opening / closing device 7 is controlled. By controlling the opening / closing operation of the opening / closing device 7, the supply amount of the conveyed product from the supply port 4 into the conveyance path 3 is adjusted, and a certain amount of the conveyed product stays in the conveyance path 3.

  Examples of the detection means 20 include an ammeter 20a that detects a change in the current value of the drive source 16, a load cell 20b that detects a change in the weight of the transported object being passed, and the like. In this embodiment, the ammeter 20a is used for detecting the fluctuation of the current value of the drive source 16, and the load cell 20b is used for detecting the fluctuation of the weight of the passing object.

  A storage tank (not shown) is connected to the hopper 6, and a conveyed product is supplied from the storage tank. In addition, you may comprise so that a conveyed product may be supplied directly, without connecting a storage tank to the hopper 6. FIG. Moreover, you may supply a conveyed product to the supply port 4 using a belt conveyor, for example, without using the hopper 6 and the opening / closing means 7 as a supply means. In this case, the control means 15 controls the on / off operation and speed of the belt conveyor according to at least one of the load fluctuation of the driving source 16 and the fluctuation of the weight of the conveyed article being passed.

  The screw carrier 10 is provided so as to be rotatable in the conveyance path 3 of the casing 2 and in the direction opposite to the outer screw blade 12 in the conveyance path 3 of the casing 2. An outer screw blade 12 and a reverse spiral inner screw blade 13 are provided.

  One end portion of the outer screw blade 12 protrudes outward from one end portion of the casing 2, and a cylindrical driven gear 18 is integrally provided at the protruding portion, and the driven gear 18 and a drive source 16 to be described later are driven. The gear 17 meshes with each other.

  The inner screw blade 13 is rotatably provided at the center of the conveyance path 3 of the casing 2, and is integrally formed by welding or the like on the peripheral surface of the rotary shaft 11 positioned so that the outer screw blade 12 is wound around the inner screw blade 13. It is joined and is configured to rotate integrally with the rotating shaft 11. A driven gear 19 is connected to one end portion of the rotating shaft 11, and the driven gear 19 and a driving gear 17 of a driving source 16 described later mesh with each other.

  A drive motor 16 as a drive source is provided in a portion adjacent to the casing 2, and a drive gear 17 is connected to a drive shaft of the drive motor 16, and the drive gear 17, the driven gear 18, and the driven gear 19 are connected. Intermeshing.

  By operating the drive motor 16, the driven gears 18 and 19 rotate in different directions via the drive gear 17, and the outer screw blade 12 and the inner screw blade 13 rotate in opposite directions.

  The outer diameter of the outer screw blade 12 is set so that a slight gap is formed between the outer screw blade 12 and the inner surface of the casing 2. The inner screw blade 13 is set to have a smaller outer diameter than the outer screw blade 12.

  The pitches of the outer screw blades 12 and the inner screw blades 13 are set so as to decrease sequentially from one end side (supply port 4 side) to the other end side (discharge port 5 side). Therefore, in the conveyance path 3 of the casing 2, the volume per one pitch of the screw blades 12 and 13 is formed to be gradually smaller from one end to the other end of the casing 2.

  In the example of FIG. 1, the inside of the conveyance path 3 of the casing 2 is divided into a plurality of (for example, three) sections from the supply port 4 to the discharge port 5, and the pitches of the screw blades 12 and 13 are the same in each section. And the pitch of both screw blades 12 and 13 for each section is configured to decrease sequentially from the supply port 4 to the discharge port 5, but the pitch of both screw blades 12 and 13 is continuously decreased. Also good.

  And in order to convey a conveyed product using the conveying apparatus 1 by this embodiment comprised as mentioned above, the conveyed item stored in the storage tank is intermittently supplied in the hopper 6, and an opening / closing device 7 is operated to open the supply port 4, and the conveyed product is supplied from the supply port 4 into the conveyance path 3 of the casing 2.

  Then, the drive motor 16 is operated to rotate the screw blades 12 and 13 of the screw carrier 10 in the opposite directions via the drive gear 17 and the driven gears 18 and 19, so that the outer screw blade 12 and the inner screw blade are rotated. In cooperation with 13, the conveyed product is conveyed in the direction of the discharge port 5.

  In this case, one screw pitch of both screw blades 12 and 13 is configured so as to gradually decrease from one end side (supply port 4 side) to the other end side (discharge port 5 side). Since the volume per pitch is configured to gradually decrease from one end side to the other end side, the conveyed product supplied from the supply port 4 into the conveyance path 3 of the casing 2 moves along the conveyance path 3. The density is gradually increased, and the entire cross-sectional area is filled in the discharge port 5, and in this state, the discharge port 5 is discharged out of the casing 2, and is supplied to the receiving portion of the conveyed product that continues to the discharge port 5. Become.

  Accordingly, even if the conveyed product is intermittently supplied to the supply port 4 and the amount of the conveyed product conveyed in the conveying path 3 of the casing 2 fluctuates in accordance with the intermittently, the quantitative property per unit time is ensured. Therefore, it is possible to carry out stable conveyance with high quantitativeness regardless of the type of the conveyed product.

  Further, when the supply amount of the conveyed product from the supply port 4 into the conveyance path 3 becomes excessive, the density of the conveyed product on the discharge port 5 side in the casing 2 is increased, and the high density portion is the supply port. The load of the drive source is increased by gradually growing to the 4th side. In this case, a change in the load of the drive source 16 is detected by the ammeter 20a, and opened and closed by the control means 15 according to the signal from the ammeter 20a. Since the opening / closing operation of the apparatus 7 is controlled and the supply amount of the conveyed product into the conveyance path 3 is adjusted, a certain amount of the conveyed product in the casing 2 is not affected by the fluctuation of the load of the drive source 16. Can be retained.

  Furthermore, when the discharge amount (cutout amount) of the conveyed product from the discharge port 5 is increased / decreased by increasing / decreasing the number of rotations of both screw blades 12, 13 of the screw carrier 10, However, in this case, the load cell 20b detects the change in the amount of the full portion and controls the opening / closing operation of the opening / closing device 7 by the control means 15 in accordance with the signal from the load cell 20b. Alternatively, the load change of the drive source 16 is detected by the ammeter 20a, and the opening / closing operation of the opening / closing device 7 is controlled by the control means 15 according to the signal to adjust the supply amount of the conveyed product into the conveyance path 3. Therefore, a certain amount of the conveyed product can be retained in the casing 2 without being affected by fluctuations in the discharge amount.

  Furthermore, since the outer screw blade 12 and the inner screw blade 13 of the screw carrier 10 rotate in opposite directions, the screw blades 12 and 13 and the conveyed product rotate together in the vicinity of the discharge port 5. Therefore, it is not difficult to discharge the conveyed product from the discharge port 5, and a certain amount of the conveyed product can be reliably discharged from the discharge port 5.

  In this embodiment, the pitch is gradually reduced from one end (input port 4) to the other end (discharge port 5) for each predetermined section. However, the pitch is continuous from one end to the other end. You may comprise so that it may become small sequentially, and there exists a similar effect in that case.

  Further, in this embodiment, the screw carrier 10 is constituted by the outer screw blade 12 and the inner screw blade 13, but the screw carrier may be constituted by one screw blade, and in that case Has the same effect.

  FIG. 2 shows a second embodiment of the conveying means according to the present invention. This conveying device 1 is formed by forming the casing 2 into a tapered cylindrical shape having a gradually decreasing diameter from one end to the other end. The outer shape of the outer screw blade 12 and the inner screw blade 13 of the screw carrier 10 are formed so as to match the inner shape of the casing 2, and the pitch of the screw blades 12, 13 is made constant throughout. The other configurations are the same as those shown in the first embodiment.

  And in the conveying apparatus 1 shown in this embodiment, since the casing 2 is formed in a tapered cylindrical shape having a gradually decreasing diameter from one end to the other end, both the screw blades 12 and 13 of the screw conveying body 10 are formed. The conveyance volume per rotation can be sequentially reduced from the inlet 4 to the outlet 5 of the casing 2.

  Accordingly, the conveyed product supplied from the supply port 4 into the conveyance path 3 of the casing 2 is gradually increased in density as it moves through the conveyance path 3, and fills the entire cross-sectional area at the discharge port 5, and this state Thus, the discharged product is discharged from the discharge port 5 to the outside of the casing 2 and supplied to the receiving portion of the conveyed product that continues to the discharge port 5, so that the conveyed product is intermittently supplied to the supply port 4, and the casing 2 is accordingly supplied. Even if the amount of the transported material transported in the transport path 3 fluctuates with time, it is possible to ensure quantitativeness per unit time.

  In addition, when the supply amount of the conveyed product from the supply port 4 into the conveyance path 3 becomes excessive, the ammeter 20a detects a change in the load of the drive source 16, and according to the signal from the ammeter 20a. Since the control means 15 controls the opening / closing operation of the opening / closing device 7 and adjusts the supply amount of the conveyed product into the conveyance path 3, the inside of the casing 2 is not affected by the fluctuation of the load of the drive source 16. It is possible to retain a certain amount of the transported material.

  Furthermore, when the discharge amount (cutout amount) of the conveyed product from the discharge port 5 is increased / decreased by increasing / decreasing the rotational speeds of the screw blades 12, 13 of the screw carrier 10, In this case, a change in the amount of the filled portion is detected by the load cell 20b, and the opening / closing operation of the opening / closing device 7 is controlled by the control means 15 in accordance with a signal from the load cell 20b. Since the supply amount of the conveyed product to the inside is adjusted, a fixed amount of the conveyed product can be retained in the casing 2 without being affected by the fluctuation of the discharge amount.

  Furthermore, since the outer screw blade 12 and the inner screw blade 13 of the screw carrier 10 rotate in opposite directions, the screw blades 12 and 13 and the conveyed product rotate together in the vicinity of the discharge port 5. Therefore, it is not difficult to discharge the conveyed product from the discharge port 5, and a certain amount of the conveyed product can be reliably discharged from the discharge port 5.

  In this embodiment, the pitch of the screw blades 12 and 13 of the screw carrier 10 is constant throughout, but as shown in the first embodiment, one end (input 4) From the one end to the other end (the discharge port 5) may be configured such that the pitch is sequentially reduced for every fixed section, or may be configured such that the pitch is continuously reduced from one end to the other end, In that case, the same effect is obtained.

  Also in this embodiment, the screw carrier 10 is constituted by the outer screw blades 12 and the inner screw blades 13, but the screw carrier may be constituted by one screw blade, and in that case Has the same effect.

  FIG. 3 shows a third embodiment of the conveying means according to the present invention. This conveying device 1 comprises the screw conveying body 10 only by the inner screw blades 13 and the rotation of the inner screw blades 13. The shaft 11 is configured such that the diameter gradually increases from one end to the other end, and the other configurations are the same as those shown in the first embodiment.

  And in the conveying apparatus 1 shown in this embodiment, while it comprises so that the rotating shaft 11 may become thick gradually from one end to the other end, the pitch of the inner screw blade | wing 13 is made small gradually from the one end side to the other end side. Since it comprises so, the conveyance volume per rotation of the inner side screw blade | wing 13 of the screw conveyance body 10 can be made small sequentially from the insertion port 4 of the casing 2 to the discharge port 5. FIG.

  Accordingly, the density of the conveyed product supplied from the supply port 4 into the conveyance path 3 of the casing 2 is gradually increased as it moves through the conveyance path 3, and the entire cross-sectional area is filled at the discharge port 5. As a result, it is discharged from the discharge port 5 to the outside of the casing 2 and supplied to the receiving portion of the conveyed product that continues to the discharge port 5.

  As a result, even if the conveyed product is intermittently supplied to the supply port 4 and the amount of the conveyed product conveyed in the conveyance path 3 of the casing 2 fluctuates with time, the quantitative property per unit time can be obtained. Since it can ensure, stable conveyance with high quantitative property can be performed.

  In addition, when the supply amount of the conveyed product from the supply port 4 into the conveyance path 3 becomes excessive, the ammeter 20a detects a change in the load of the drive source 16, and according to the signal from the ammeter 20a. Since the control means 15 controls the opening / closing operation of the opening / closing device 7 and adjusts the supply amount of the conveyed product into the conveyance path 3, the inside of the casing 2 is not affected by the fluctuation of the load of the drive source 16. It is possible to retain a certain amount of the transported material.

  Furthermore, when the discharge amount (cutout amount) of the conveyed product from the discharge port 5 is increased / decreased by increasing / decreasing the rotation speed of the inner screw blades 13 of the screw carrier 10, the retained amount of the conveyed product in the casing 2. However, in this case, the load cell 20b detects a change in the amount of the filled portion, and controls the opening / closing operation of the opening / closing device 7 by the control means 15 in accordance with the signal from the load cell 20b. Therefore, a certain amount of the conveyed product can be retained in the casing 2 without being affected by the fluctuation of the discharge amount.

  FIG. 4 shows a fourth embodiment of the conveying means according to the present invention. This conveying device 1 comprises the screw conveying body 10 only by the inner screw blades 13 and the rotation of the inner screw blades 13. The shaft 11 is configured to gradually increase from one end to the other end, and the pitch of the inner screw blades 13 is the same from one end to the other end. Other configurations are the same as those in the first embodiment. It is the same as that shown in.

  And in the conveying apparatus 1 shown in this embodiment, since it is comprised so that the rotating shaft 11 may become thick gradually from one end to the other end, it is per rotation of the inner side screw blade | wing 13 of the screw conveyance body 10. FIG. The conveyance volume can be sequentially reduced from the inlet 4 to the outlet 5 of the casing 2.

  Accordingly, the density of the conveyed product supplied from the supply port 4 into the conveyance path 3 of the casing 2 is gradually increased as it moves through the conveyance path 3, and the entire cross-sectional area is filled at the discharge port 5. As a result, it is discharged from the discharge port 5 to the outside of the casing 2 and supplied to the receiving portion of the conveyed product that continues to the discharge port 5.

  As a result, even if the conveyed product is intermittently supplied to the supply port 4 and the amount of the conveyed product conveyed in the conveyance path 3 of the casing 2 fluctuates with time, the quantitative property per unit time can be obtained. Since it can ensure, stable conveyance with high quantitative property can be performed.

  In addition, when the supply amount of the conveyed product from the supply port 4 into the conveyance path 3 becomes excessive, the ammeter 20a detects a change in the load of the drive source 16, and according to the signal from the ammeter 20a. Since the control means 15 controls the opening / closing operation of the opening / closing device 7 and adjusts the supply amount of the conveyed product into the conveyance path 3, the inside of the casing 2 is not affected by the fluctuation of the load of the drive source 16. It is possible to retain a certain amount of the transported material.

  Furthermore, when the discharge amount (cutout amount) of the conveyed product from the discharge port 5 is increased / decreased by increasing / decreasing the rotation speed of the inner screw blades 13 of the screw carrier 10, the retained amount of the conveyed product in the casing 2. However, in this case, the load cell 20b detects a change in the amount of the filled portion, and controls the opening / closing operation of the opening / closing device 7 by the control means 15 in accordance with the signal from the load cell 20b. Therefore, a certain amount of the conveyed product can be retained in the casing 2 without being affected by the fluctuation of the discharge amount.

  FIG. 5 shows a fifth embodiment of the conveying means according to the present invention. The conveying device 1 includes a flexible joint 21 interposed between the supply port 4 and the opening / closing device 7 and a casing. 2 is supported in a suspended state on the ceiling or the like by a suspending means 22 such as a wire, and a load cell 20b as a detecting means is interposed in the middle of the suspending means 22, and other configurations are as follows. This is the same as that shown in the first embodiment.

  And also in the conveying apparatus 1 shown in this embodiment, 1 pitch of both the screw blades 12 and 13 is from one end side (supply port 4 side) similarly to what is shown in the said 1st Embodiment. Since it is configured so that it gradually decreases from the other end side (the discharge port 5 side), the conveying volume per one rotation of both screw blades 12 and 13 is configured so as to decrease sequentially from one end side to the other end side. The transported material supplied from the supply port 4 into the transport path 3 of the casing 2 is gradually increased in density as it moves through the transport path 3 and fills the entire cross-sectional area at the discharge port 5. The material is discharged from the discharge port 5 to the outside of the casing 2 and supplied to the receiving portion of the conveyed product that continues to the discharge port 5.

  Accordingly, even if the conveyed product is intermittently supplied to the supply port 4 and the amount of the conveyed product conveyed in the conveying path 3 of the casing 2 fluctuates in accordance with the intermittently, the quantitative property per unit time is ensured. Therefore, it is possible to carry out stable conveyance with high quantitativeness regardless of the type of the conveyed product.

  Further, when the supply amount of the conveyed product from the supply port 4 into the conveyance path 3 becomes excessive, the density of the conveyed product on the discharge port 5 side in the casing 2 is increased, and the high density portion is the supply port. The load of the drive source 16 is gradually increased to the 4th side and the load of the drive source 16 is increased. In this case, a change in the load of the drive source 16 is detected by the ammeter 20a, and the control means 15 responds to the signal from the ammeter 20a. Since the opening / closing operation of the opening / closing device 7 is controlled and the supply amount of the conveyed product into the conveyance path 3 is adjusted, a certain amount of the amount of the load is not affected by the load of the driving source 16 in the casing 2. The conveyed product can be retained.

  Furthermore, when the discharge amount (cutout amount) of the conveyed product from the discharge port 5 is increased or decreased by increasing or decreasing the rotational speeds of the screw blades 12 and 13 of the screw carrier 10, the retained material in the casing 2 is retained. In this case, the load cell 20b detects the change in the amount of the filled portion, and controls the opening / closing operation of the opening / closing device 7 by the control means 15 according to the signal from the load cell 20b. Since the supply amount of the conveyed product is adjusted, a constant amount of the conveyed product can be retained in the casing 2 without being affected by the fluctuation of the discharge amount.

  Furthermore, since the outer screw blade 12 and the inner screw blade 13 of the screw carrier 10 rotate in opposite directions, the screw blades 12 and 13 and the conveyed product rotate together in the vicinity of the discharge port 5. Therefore, it is not difficult to discharge the conveyed product from the discharge port 5, and a certain amount of the conveyed product can be reliably discharged from the discharge port 5.

  FIG. 6 shows a sixth embodiment of the transfer device according to the present invention. This transfer device 1 has a flexible joint 21 interposed between a supply port 4 and an opening / closing device 7 and a casing. 2 is supported above the floor so as to be vertically displaceable by support means 22 and 22, and load cells 20b and 20b are interposed in the middle of the support means 23 and 23. This is the same as that shown in the first embodiment.

  And also in the conveying apparatus 1 shown in this embodiment, 1 pitch of both the screw blades 12 and 13 is from one end side (supply port 4 side) similarly to what is shown in the said 1st Embodiment. Since the volume per pitch of both screw blades 12 and 13 is configured to gradually decrease from one end side to the other end side, the other end side (discharge port 5 side) is configured to be sequentially decreased. The transported material supplied from the supply port 4 into the transport path 3 of the casing 2 is gradually increased in density as it moves through the transport path 3 and fills the entire cross-sectional area at the discharge port 5, and is discharged in that state. The material is discharged from the outlet 5 to the outside of the casing 2 and supplied to the receiving portion of the conveyed product that continues to the discharge port 5.

  Accordingly, even if the conveyed product is intermittently supplied to the supply port 4 and the amount of the conveyed product conveyed in the conveying path 3 of the casing 2 fluctuates in accordance with the intermittently, the quantitative property per unit time is ensured. Therefore, it is possible to carry out stable conveyance with high quantitativeness regardless of the type of the conveyed product.

  Further, when the supply amount of the conveyed product from the supply port 4 into the conveyance path 3 becomes excessive, the density of the conveyed product on the discharge port 5 side in the casing 2 is increased, and the high density portion is the supply port. The load of the drive source is increased by gradually growing to the 4th side. In this case, a change in the load of the drive source 16 is detected by the ammeter 20a, and opened and closed by the control means 15 according to the signal from the ammeter 20a. Since the opening / closing operation of the apparatus 7 is controlled and the supply amount of the conveyed product into the conveyance path 3 is adjusted, a certain amount of the conveyed product in the casing 2 is not affected by the fluctuation of the load of the drive source 16. Can be retained.

  Furthermore, when the discharge amount (cutout amount) of the conveyed product from the discharge port 5 is increased or decreased by increasing or decreasing the rotational speeds of the screw blades 12 and 13 of the screw carrier 10, the retained material in the casing 2 is retained. In this case, the load cell 20b detects the change in the amount of the filled portion, and controls the opening / closing operation of the opening / closing device 7 by the control means 15 according to the signal from the load cell 20b. Since the supply amount of the conveyed product is adjusted, a constant amount of the conveyed product can be retained in the casing 2 without being affected by the fluctuation of the discharge amount.

  Furthermore, since the outer screw blade 12 and the inner screw blade 13 of the screw carrier 10 rotate in opposite directions, the screw blades 12 and 13 and the conveyed product rotate together in the vicinity of the discharge port 5. Therefore, it is not difficult to discharge the conveyed product from the discharge port 5, and a certain amount of the conveyed product can be reliably discharged from the discharge port 5.

  FIG. 7 shows a sixth embodiment of a transfer device according to the present invention. This transfer device 1 has a flexible joint 21 interposed between a supply port 4 and an opening / closing device 7 and a casing. 2 is supported by the fulcrum 24 on the upper part of the floor part, and the other end part of the casing 2 is supported on the upper part of the floor part by the supporting means 23. Further, a load cell or the like is provided between the supporting means 23 and the floor part. The detection means 20 is interposed, and other configurations are the same as those shown in the first embodiment.

  And also in the conveying apparatus shown in this embodiment, as in the first embodiment, one pitch of both screw blades 12 and 13 is different from one end side (supply port 4 side). Since it is configured so as to decrease sequentially toward the end side (discharge port 5 side), and the conveyance volume per one rotation of both screw blades 12 and 13 is configured so as to decrease sequentially from one end side to the other end side, The transported material supplied from the supply port 4 into the transport path 3 of the casing 2 is gradually increased in density as it moves through the transport path 3 and fills the entire cross-sectional area at the discharge port 5, and is discharged in that state. The material is discharged from the outlet 5 to the outside of the casing 2 and supplied to the receiving portion of the conveyed product that continues to the discharge port 5.

  Accordingly, even if the conveyed product is intermittently supplied to the supply port 4 and the amount of the conveyed product conveyed in the conveying path 3 of the casing 2 fluctuates in accordance with the intermittently, the quantitative property per unit time is ensured. Therefore, it is possible to carry out stable conveyance with high quantitativeness regardless of the type of the conveyed product.

  Further, when the supply amount of the conveyed product from the supply port 4 into the conveyance path 3 becomes excessive, the density of the conveyed product on the discharge port 5 side in the casing 2 is increased, and the high density portion is the supply port. The load of the drive source 16 is gradually increased to the 4th side and the load of the drive source 16 is increased. In this case, a change in the load of the drive source 16 is detected by the ammeter 20a, and the control means 15 responds to the signal from the ammeter 20a. Since the opening / closing operation of the opening / closing device 7 is controlled and the supply amount of the conveyed product into the conveyance path 3 is adjusted, a certain amount of the conveyed product in the casing 2 without affecting the fluctuation of the load of the drive source 16. Can be retained.

  Furthermore, when the discharge amount (cutout amount) of the conveyed product from the discharge port 5 is increased / decreased by increasing / decreasing the number of rotations of both screw blades 12, 13 of the screw carrier 10, The range of the full portion of the material tends to fluctuate and the amount of stay of the conveyed material tends to fluctuate. In this case, the material is conveyed by the load cell 20b interposed between the support means 23 supporting the casing 2 and the floor. The weight of the casing 2 containing the object is detected, and the opening / closing operation of the opening / closing device 7 is controlled by the control means 15 in accordance with the signal detected by the detecting means 20 to adjust the supply amount of the conveyed object into the conveying path 3. Therefore, a certain amount of the conveyed product can be retained in the casing 2 without being affected by fluctuations in the discharge amount.

  Furthermore, since the outer screw blade 12 and the inner screw blade 13 of the screw carrier 10 rotate in opposite directions, the screw blades 12 and 13 and the conveyed product rotate together in the vicinity of the discharge port 5. Therefore, it is not difficult to discharge the conveyed product from the discharge port 5, and a certain amount of the conveyed product can be reliably discharged from the discharge port 5.

  The first embodiment shown in FIG. 1, the second embodiment shown in FIG. 2, the fifth embodiment shown in FIG. 5, the sixth embodiment shown in FIG. 6, and the embodiment shown in FIG. In the seventh embodiment, since the outer screw blades 12 and the inner screw blades 13 of the screw carrier 10 are configured to rotate in opposite directions, the conveyed product adheres to both screw blades 12 and 13. There is no such thing, and a certain amount of the conveyed product can be reliably discharged from the discharge port 5 regardless of the type of the conveyed product.

1 is a schematic view showing a first embodiment of a transport apparatus according to the present invention. It is the schematic which showed 2nd Embodiment of the conveying apparatus by this invention. It is the schematic which showed 3rd Embodiment of the conveying apparatus by this invention. It is the schematic which showed 4th Embodiment of the conveying apparatus by this invention. It is the schematic which showed 5th Embodiment of the conveying apparatus by this invention. It is the schematic which showed 6th Embodiment of the conveying apparatus by this invention. It is the schematic which showed 7th Embodiment of the conveying apparatus by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyance device 2 Casing 3 Conveyance path 4 Supply port 5 Discharge port 6 Hopper 7 Opening / closing device 10 Screw conveyance body 11 Rotating shaft 12 Outer screw blade 13 Inner screw blade 15 Control means 16 Drive source (drive motor)
Reference Signs List 17 drive gear 18, 19 driven gear 20 detection means 20a ammeter 20b load cell 21 flexible joint 22 suspension means 23 support means 24 fulcrum

Claims (5)

A casing having a supply port at one end and a discharge port at the other end, and being rotatably provided in the casing, and transporting a material to be supplied into the casing from the supply port, A screw carrier having screw blades leading to a discharge port,
A conveying apparatus characterized in that a conveying volume per one rotation of the screw blade in the casing is gradually reduced from the supply port to the discharge port.   The conveying device according to claim 1, wherein the screw blade pitch is configured to be gradually reduced from the supply port to the discharge port.   The inner surface of the casing is formed into a shape that gradually decreases in diameter from the supply port to the discharge port, and the outer shape of the screw blade is formed in a shape that matches the inner surface shape. The conveying apparatus as described in.   The screw carrier is composed of an inner screw blade and an outer screw blade provided outside the inner screw blade and having a spiral opposite to the inner screw blade, and the inner screw blade and the outer screw blade. The conveying device according to claim 1, wherein the conveying devices are rotatable in directions opposite to each other. Supply means for supplying a conveyed product to the supply port; and control means for controlling a supply operation by the supply means in accordance with at least one of a load fluctuation of the screw carrier and a fluctuation of the weight of the conveyed article being passed. 5. The transport apparatus according to claim 1, comprising:

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