JP2006112341A - Device for carrying fluid material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for carrying fluid material capable of carrying even a fluid carried material with high viscosity such as slurry with low water content without being affected by the viscosity of the fluid carried material by filling the fluid carried material into the entire intake volume of a carrying cylinder at an optimum timing in the intake stroke of the carrying piston, formed in a simple structure, and reduced in device cost and running cost. <P>SOLUTION: In this device for carrying fluid material, the slurry-like fluid carried material fed from a carrying device into a carried material filled chamber is force-fed to a use portion through a delivery chamber by a carrying piston reciprocating in the carrying cylinder. A pusher device feeding the carried material to the carried material filled chamber by pressurizing the carried material from the carrying device in association with the reciprocating motion of the carrying piston is installed between the carrying device and the carrying cylinder. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  INDUSTRIAL APPLICABILITY The present invention is applied to a piston pump or the like for sludge conveyance, and a slurry-like fluid conveyance material supplied to a conveyance material filling chamber by a conveyance device is used through a discharge chamber by a conveyance piston that reciprocates in a conveyance cylinder. The present invention relates to a fluid transporting material transporting device for pressure feeding.

As an example of a piston pump for sludge transport that transports a slurry-like fluid transported material such as sludge by reciprocating movement of a transport piston, Patent Document 1 (Japanese Patent Publication No. 7-122427) and Patent Document 2 (Japanese Patent Laid-Open No. 2002-2002). No. 263409) is provided.
In the technique of Patent Document 1, a plurality of hydraulically driven drive pistons, a plurality of transfer pistons directly connected to the drive piston of the cylinder unit, and a cylinder unit are provided, and a slurry-like state supplied to the transfer object filling chamber by a transfer device via a suction valve. The fluid transported material is pumped to the discharge chamber through the discharge valve by reciprocating the transport piston and the transport piston of the cylinder unit, and is sent from the discharge chamber to the destination of the fluid transported material. Configured to supply.

  Moreover, in the technique of patent document 2, the slurry-like fluid conveyance thing supplied to this piston pump from the hopper installed above the piston pump is conveyed by the conveyance piston which reciprocates in the conveyance cylinder of this piston pump. A pusher device having a pusher cylinder and a pusher piston is provided in the hopper, and the fluid transported material in the hopper is pushed into the piston pump by the reciprocating motion of the pusher piston of the pusher device. It is configured as follows.

Japanese Examined Patent Publication No. 7-122427 JP 2002-263409 A

Piston pumps such as those disclosed in Patent Document 1 (Japanese Patent Publication No. 7-122427), Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-263409), etc. In recent years, there have been increasing demands and examples of conveying low moisture content slurries with lower moisture content, reflecting energy conservation and higher performance of sludge and other dehydrators.
However, in the technique of Patent Document 1 (Japanese Patent Publication No. 7-122427), a fluid transported material that is continuously supplied from the inside of the hopper via the suction valve to the transported material filling chamber is transported. Since the piston is reciprocated in the transfer cylinder, the pressure is only sent to the discharge chamber via the discharge valve. Therefore, the flow of the transfer object supply path from the hopper through the transfer device to the intake port of the transfer cylinder When the moisture content of the conveyed product decreases due to the resistance, the viscosity increases, and the fluidity decreases (when the slurry becomes a low moisture content slurry), the amount of suction into the conveyance cylinder per stroke decreases.
For this reason, in the conventional technology, when the low moisture content slurry is conveyed, the low moisture content slurry is not filled in the entire suction volume of the conveyance cylinder, and the conveyance amount of the conveyance object per one stroke of the conveyance piston is greatly increased. It is likely that a situation will occur in which the transfer efficiency of the piston pump is greatly reduced.

Further, in the technique of Patent Document 2 (Japanese Patent Laid-Open No. 2002-263409), a pusher device including a pusher cylinder and a pusher piston is provided in a hopper, and the flow in the hopper is reciprocated by the pusher piston. The transportable material is pushed into the piston pump, but the pressure is applied to the fluid transported material in the hopper, and it is merely supplied into the transport cylinder.
For this reason, in this conventional technique, it is difficult to fill the entire transport cylinder suction volume with the fluid transported material at the optimum time of the suction stroke of the transport piston, and the pusher device is used during the discharge stroke of the transport piston. Due to the pressurization of the conveyed product, the resistance on the discharge side increases, which may cause a significant decrease in the conveyance efficiency of the piston pump.

  In view of the problems of the prior art, the present invention makes it possible to fill the entire suction volume of the transport cylinder with the fluid transport material in a timely manner at the optimum timing of the suction stroke of the transport piston without being affected by the viscosity of the fluid transport material. Providing a fluid transport material transport device that enables transport with high transport efficiency even for highly viscous fluid transport materials such as low moisture content slurry, and has a simple structure and reduced equipment and running costs. The purpose is to do.

  The present invention achieves such an object, and in a fluid transport material transport apparatus for feeding a slurry-like fluid transport material supplied from a transport device to a destination through a discharge chamber by a transport piston that reciprocates in a transport cylinder. A pusher device is provided between the transfer device and the transfer cylinder to pressurize the transfer material from the transfer device and supply it to the transfer material filling chamber in conjunction with the reciprocation of the transfer piston.

In this invention, preferably, the pusher device reciprocates in conjunction with a reciprocating motion of the transport piston in the pusher cylinder communicated with a transported material supply port of the transport device, and supplies the transported material. A pusher piston that pressurizes the conveyed product from the mouth and supplies the pressurized product to the conveyed product filling chamber, and conveys the conveyed product pressure-fed to the conveyed product filling chamber by the pusher piston through the discharge chamber to the destination. It is configured to pump.
In this invention, it is preferable that the pusher driving device for driving the pusher device, a piston displacement sensor for detecting the displacement of the transfer piston, and a detection value of the transfer piston displacement from the piston displacement sensor are input to the transfer device. The pusher driving device is driven based on a detected piston displacement value, and the fluid transported material is pushed into the transported material filling chamber by the pusher piston during the suction stroke of the transport piston.

According to such an invention, a pusher device preferably constituted by a pusher cylinder and a pusher piston is communicated with the suction side of the transport piston by pressurizing the transported material from the transport device in conjunction with the reciprocation of the transport piston. It is configured to supply to the transfer material filling chamber, and the pusher controller pressurizes and supplies the flowable transfer material into the transfer cylinder during the intake stroke of the transfer piston based on the detected value of the transfer piston displacement by the piston displacement sensor. As a result, it is possible to fill the entire transport cylinder suction volume with the fluid transported material at the optimum time of the suction stroke of the transport piston.
Thereby, even if it is a highly viscous fluid conveyance thing, such as a low moisture content slurry, without being influenced by the viscosity of the fluid conveyance article, it can be conveyed with high conveyance efficiency.

In the invention, preferably, the pusher controller stops the pusher piston at a position after the pusher piston pushes the fluid transported material into the transported material filling chamber, and operates the discharge stroke of the transport piston. Configured to squeeze.
According to this structure, the pusher piston stops the pusher piston at a position after the pusher piston pushes the fluid transported material into the transported material filling chamber, and causes the transport piston to operate the discharge stroke. The pusher piston can be used also as the suction valve in Patent Document 1 (Japanese Patent Publication No. 7-122427) or Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-263409). This eliminates the need for a fluid transporting material transport apparatus that has a simple structure and reduced apparatus costs and running costs.

In this invention, preferably, the pusher controller causes the transfer piston to operate in a discharge stroke at a position after the pusher piston is pushed in, and the pusher piston faces the transfer piston in the second half of the stroke of the transfer piston. The transported material filling chamber and the discharge chamber are shut off, and the pusher piston is used as a pulling process while staying at the position.
According to this structure, the pusher controller causes the transfer piston to operate in the discharge stroke at a position after the pusher piston is pushed in, and the transfer piston and the transfer object filling chamber are moved by the transfer piston in the latter half of the stroke of the transfer piston. By shutting off the discharge chamber and staying at that position, the pusher piston is used as a pulling process, so that the transfer piston can be used also as the discharge valve in Patent Document 1 or Patent Document 2, and the discharge valve and The drive device is not required, and a fluid transported material transport device having a simple structure and reduced device cost and running cost can be obtained.

In the present invention, preferably, a volume V1 corresponding to the transfer piston of the transfer object filling chamber to which the transfer object is supplied by the pusher device is larger than a stroke volume V2 of the transfer piston (V1> V2).
And in addition to this structure, it is good to comprise the said pusher apparatus in the following three aspects.

(1) The pusher piston includes a conical or pyramidal inclined portion whose cross-sectional area is reduced from the conveyed product filling chamber side of the pusher cylinder toward a back chamber formed on the back portion of the pusher piston. At the same time, a minute gap is formed between the outer periphery of the pusher piston and the inner periphery of the pusher cylinder so that the fluid transportable material can pass therethrough.
(2) The pusher piston communicates along the circumferential direction of the outer periphery from the transfer material filling chamber side of the pusher cylinder to the back chamber side formed on the back portion of the pusher piston, and the fluid transfer material passes through the pusher piston. A plurality of possible grooves are formed.
(3) The pusher piston communicates with the inner periphery of the product filling chamber side of the pusher cylinder and the back chamber side formed at the back of the pusher piston so that the fluid product can pass through. A plurality of such passage holes are formed.

  If comprised in this way, the volume V1 of a conveyance thing filling chamber will be larger than the stroke volume V2 (V1> V2) of a conveyance piston corresponding to this, and a conveyance thing filling chamber and a back chamber will be formed in the pusher piston of a pusher apparatus. Since a small passage through which the fluid carrier to be communicated is formed, the small passage between the carrier filling chamber (V1) having a volume larger than the stroke volume V2 of the carrier piston and the back chamber of the pusher piston, The back chamber and the transfer material filling chamber are always in communication, reducing the operating resistance of the pusher piston that accompanies the reciprocating movement of the transfer piston, and smoothly operating the pusher device to fill the flowable transfer material from the transfer device. Can be pumped into the chamber.

Further, the present invention can also be applied to a fluid transported material transport device provided with a suction valve and a discharge valve.
In this case, the flow is configured such that the slurry-like fluid transport material supplied via the suction valve by the transport device is pumped to the discharge chamber via the discharge valve by the transport piston that reciprocates in the transport cylinder. In the transportable material transport device, the transported material from the transport device is pressurized between the transport device and the suction valve in conjunction with the reciprocating motion of the transport piston, and is fed into the transported material filling chamber via the suction valve. A pusher device is provided, and the pusher device reciprocates in conjunction with a reciprocating motion of the transport piston in the pusher cylinder communicated with a transported material supply port of the transport device and supplies the transported material. A pusher piston is provided that pressurizes the conveyed product from the mouth and supplies the pressurized product to the conveyed product filling chamber.
If comprised in this way, Preferably the pusher apparatus comprised by the pusher cylinder and the pusher piston is interlocked with the reciprocating motion of a conveyance piston, and interlocking with the opening / closing operation | movement of a suction valve and a discharge valve, and the conveyance from a conveyance apparatus It is configured to pressurize the material and supply it to the transported material filling chamber communicated with the suction side of the transport piston, and pressurize and supply the fluid transported material into the transport cylinder by the pusher piston during the suction stroke of the transport piston. By doing so, it becomes possible to fill the entire transport cylinder suction volume with the fluid transported material at the optimum time of the suction stroke of the transport piston.
Thereby, even if it is a highly viscous fluid conveyance thing, such as a low moisture content slurry, without being influenced by the viscosity of the fluid conveyance article, it can be conveyed with high conveyance efficiency.

In the present invention, the conveying device may be constituted by a cylinder communicated with a hopper in which a fluid conveyance object is accommodated, and a piston type feeder slidably fitted in the cylinder.
If comprised in this way, since a fluid conveyance thing will be conveyed by the reciprocating motion of the piston type feeder slidably fitted in the cylinder, the pressure conveyance of the fluid conveyance substance will be possible, and high conveyance will be possible. Efficiency is obtained.

  According to the present invention, the pusher device is configured to pressurize a conveyed product from the conveying device in conjunction with a reciprocating movement of the conveying piston and supply the pressurized material to a conveyed product filling chamber communicated with the suction side of the conveying piston. Since the fluid transport material is pressurized and supplied into the transport cylinder by the pusher piston during the suction stroke of the transport piston, the fluid transport material is filled in the entire transport cylinder suction volume at the optimal time of the transport piston suction stroke. It becomes possible. Thereby, even if it is a highly viscous fluid conveyance thing, such as a low moisture content slurry, without being influenced by the viscosity of the fluid conveyance article, it can be conveyed with high conveyance efficiency.

  Further, the pusher piston can also be used as a suction valve, and the suction valve and its driving device are not required. Further, the transport piston and the pusher piston can be used as a discharge valve, and the discharge valve and its driving device are used. Is not required, a fluid transported material transport apparatus having a simple structure and reduced apparatus cost and running cost can be obtained.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.

FIG. 1 is a schematic cross-sectional view of the first pump train in the double-row piston pump according to the first embodiment of the present invention (cross-sectional view taken along line BB in FIG. 2), and FIG. FIG. 3 is a schematic cross-sectional view of the piston pump in the horizontal direction (cross-sectional view taken along the line AA in FIG. 1). FIG. 3 is a schematic cross-sectional view of the second pump train in the first embodiment (cross-sectional view taken along the line CC in FIG. 4 is a cross-sectional view taken along the line DD of FIG. 1 in the first embodiment.
1 to 4, reference numeral 14 denotes a casing, in which a first row of transfer cylinders 10a and a second row of transfer cylinders 10b are formed in parallel in the horizontal direction. 9a is a first row of transfer pistons fitted in the first row of transfer cylinders 10a so as to be reciprocally slidable, and 9b is a second row of transfer cylinders of the second row of transfer cylinders 10b slidably fitted. Two transfer pistons.

Reference numeral 6a denotes a hopper for the first row, 6b denotes a hopper for the second row, and the fluid transport article 7 is accommodated in the hoppers 6a and 6b. 4a is a first row screw conveyor that conveys the fluid transport material 7 in the first row hopper 6a to the pusher device 100, which will be described later, and 4b is a fluid transport in the second row hopper 6b. It is a screw conveyor for the second row that conveys the object 7 to the pusher device 100 side. Reference numeral 5a denotes a first row motor for rotationally driving the first row screw conveyor 4a, and 5b denotes a second row motor for rotationally driving the second row screw conveyor 4b.
Reference numeral 100 denotes a pusher device which constitutes the gist of the present invention and is configured as follows.

Reference numeral 11 denotes a discharge chamber communicated with the first row transport cylinder 10a and the second row transport cylinder 10b. Reference numeral 2a denotes a pusher cylinder for the first row, which communicates with the conveyed product supply port of the screw conveyor 4a for the first row and the conveyed product filling chamber 8a. Reference numeral 2b denotes a pusher cylinder for the second row, which communicates with the conveyed product supply port of the second row screw conveyor 4b and the conveyed product filling chamber 8b.
1a is a first row pusher piston fitted in the first row pusher cylinder 2a so as to be reciprocally slidable, and 1b is fitted in the second row pusher cylinder 2b so as to be slidable back and forth. This is the second row pusher piston.
20a is a back chamber for the first row formed on the back portion of the pusher piston 1a for the first row, and 20b is a back chamber for the second row formed on the back portion of the pusher piston 1b for the second row. is there.

3a is a first row pusher driving device for reciprocatingly driving the first row pusher piston 1a, and 3b is a second row pusher driving device for reciprocatingly driving the second row pusher piston 1b. 12a is a piston displacement sensor that detects the displacement of the first row pusher piston 1a, and 12b is a piston displacement sensor that detects the displacement of the second row pusher piston 1b.
Reference numeral 13 denotes a pusher controller, which is a detection value of the first row transport piston displacement from the first row piston displacement sensor 12a, and a second row transport piston from the second row piston displacement sensor 12b. The displacement detection value is input, and the first row pusher driving device 3a and the second row pusher driving device 3b are driven based on the respective detection values of the displacement of the transport piston, and the suction of the transport piston 9a or 9b is performed. During the stroke, the fluid transport material 7 is pushed into the transport material filling chamber 8a or 8b by the pusher piston 1a or 1b.

In the first embodiment, in the suction stroke of the first row transfer piston 9a, the transfer piston 9a moves to the right in FIGS. When the transfer cylinder 10a communicates, the pusher controller 13 drives the pusher driving device 3a based on the detected value of the transfer piston displacement for the first row from the piston displacement sensor 12a for the first row, thereby The row pusher piston 1a is moved downward.
Due to the downward movement of the first row pusher piston 1a, the fluid transport material 7 transported from the hopper 6a to the transport material filling chamber 8a by the first row screw conveyor 4a is added by the pusher piston 1a. The transfer cylinder 10a is filled with pressure.

On the other hand, during the suction stroke of the transfer piston 9a for the first row, the transfer piston 9b for the second row enters the discharge stroke and moves to the left in FIGS. When the pusher controller 13 is closed, the pusher controller 13 drives the pusher driving device 3b based on the detected value of the transport piston displacement for the second row from the piston displacement sensor 12b for the second row, thereby pushing the pusher for the second row. The piston 1b is moved upward to release the pressurized state in the conveyed product filling chamber 8b.
The transfer piston 9b moves to the left to close the transfer product filling chamber 8b, and further moves to the left, so that the fluid transfer product 7 filled in the transfer cylinder 10b for the second row is discharged into the discharge chamber 11. And is pumped to the use destination of the fluid carrier 7.

  As described above, in the first embodiment, the pusher controller 13 causes the first row transfer piston 9a and the first row pusher piston 1a to move together and the second row transfer piston 9b. And the second row pusher piston 1b, when the first row transport piston 9a and pusher piston 1a side are in the suction stroke, the second row transport piston 9b and pusher piston 1b side are in the discharge stroke, and the second row When the transfer piston 9b and the pusher piston 1b for the first stroke are in the intake stroke, the transfer piston 9a and the pusher piston 1a for the first row can be performed at an accurate timing as in the discharge stroke.

Therefore, according to the first embodiment, the pusher device 100 constituted by the pusher cylinder 2a or 2b and the pusher piston 1a or 1b is transported from the screw conveyor 4a or 4b in conjunction with the reciprocating motion of the transport piston 9a or 9b. The fluid transport material 7 supplied to the material filling chamber 8a or 8b is pressurized and supplied into the transport cylinder 10a or 10b, and the pusher controller 13 detects the transport piston displacement detected by the piston displacement sensor 12a or 12b. Accordingly, the fluid piston 7a or 1b pressurizes and supplies the fluid transport material 7 into the transport cylinder 10a or 10b during the suction stroke of the transport piston 9a or 9b. Flowable conveyed object 7 can be filled into the entire suction volume of the transport cylinder 10a or 10b to the optimal timing.
Thereby, even if it is a highly viscous fluid conveyance thing, such as a low moisture content slurry, without being influenced by the viscosity of the fluid conveyance article 7, it can be conveyed with high conveyance efficiency.

Also, the pusher controller 13 causes the pusher piston 1a or 1b to stop the pusher piston 1a or 1b at a position after the fluid transported material 7 is pushed into the transported material filling chamber 8a or 8b, and the transport piston 9a. Or it becomes possible to make it operate | move so that 9b may be act | operated of a pushing process.
As a result, the pusher piston 1a or 1b can be used also as a suction valve in the prior art, the suction valve and its driving device are not required, the structure is simple, and the device cost and running cost are reduced. Is obtained.

  Also, the pusher controller 13 causes the transfer piston 9a or 9b to operate in the discharge stroke at the position after the pusher piston 1a or 1b is pushed in, and the transfer piston 9a or 9b in the latter half of the stroke of the transfer piston 9a or 9b. As a result, it is possible to block the conveyed product filling chamber 8a or 8b facing the pusher piston 1a or 1b from the discharge chamber 11. By using the pusher piston as a pulling process in this state, the transfer piston 9a or 9b can be used also as a discharge valve in the prior art, and the discharge valve and its driving device are not required, the structure is simple and the device A fluid transporting material transporting device with reduced costs and running costs can be obtained.

FIG. 5 is a horizontal sectional view of a double-row piston pump according to a second embodiment of the present invention, and FIGS. 6A, 6B, 6C, and 6D are pistons in the second embodiment. It is operation | movement explanatory drawing of a pump.
In the second embodiment, the present invention is applied to a piston pump provided with a suction valve and a discharge valve similar to those of Patent Document 1 (Japanese Patent Publication No. 7-122427).
In FIG. 5, 21a is a suction valve for the first row, 22a is a discharge valve for the first row, 21b is a suction valve for the second row, and 22b is a discharge valve for the second row. The suction valve 21a opens and closes the conveyed product filling chamber 8a communicated with the first row pusher cylinder 2a and the first row transport cylinder 10a, and the second row suction valve 21b The conveyed product filling chamber 8b communicated with the second row pusher cylinder 2b and the second row conveyance cylinder 10b are opened and closed, and the first row discharge valve 22a is located in the first row conveyance cylinder 10a. And the discharge chamber 11 are opened and closed, and the discharge valve 22b for the second row opens and closes the inside of the transfer cylinder 10b for the second row and the inside of the discharge chamber 11.
Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals.

  Next, FIG. 6 is an explanatory view of the operation in the second embodiment. In FIG. 6A, the first row suction valve 21a is opened, and the second row suction valve 21b is closed. The discharge valve 22a for the first row is closed, and the discharge valve 22b for the second row is open, interlocking with the suction stroke (right movement as shown by the arrow in FIG. 6) of the transfer piston 9a for the first row. Then, the pusher piston 1a for the first row descends as shown by the arrow in FIG. 6, and the fluid transported material is pushed into the transport cylinder 10a for the first row and the discharge stroke of the transport piston 9b for the second row. The pusher piston 1b for the second row rises as indicated by the arrow in FIG. 6 in conjunction with (leftward movement as indicated by the arrow in FIG. 6), and the transfer piston 9b for the second row moves to the transfer cylinder for the second row. The fluid carrier in 10 b is pumped into the discharge chamber 11.

  6B, after the operation of FIG. 6A, the first row suction valve 21a is closed, the second row suction valve 21b is opened, and the first row discharge valve 22a is opened. The discharge valve 22b for the second row is closed, the transfer piston 9a for the first row is stationary at the maximum stroke position of the suction, and the pusher piston 1a for the first row is lowered downward in conjunction with this. The second row transport piston 9b is stationary at the maximum discharge stroke position, and the second row pusher piston 1b is stationary at the maximum ascending position.

  6C, from the state of FIG. 6B, the first row suction valve 21a is closed, the second row suction valve 21b is opened, and the first row discharge valve 22a is opened. The second row discharge valve 22b is closed, and the second row pusher piston 1b is interlocked with the suction stroke (rightward movement as indicated by the arrow in FIG. 6) of the second row transfer piston 9b. 6 moves down as shown by the arrow 6 and pushes the fluid transported material into the transport cylinder 10b for the second row, and at the discharge stroke of the transport piston 9a for the first row (leftward movement as indicated by the arrow in FIG. 6). In conjunction with this, the pusher piston 1a for the first row rises as shown by the arrow in FIG. 6, and the transfer piston 9a for the first row transfers the fluid carrier in the transfer cylinder 10a for the second row into the discharge chamber 11. To pump.

  6D, after the operation of FIG. 6C, the first row suction valve 21a is opened, the second row suction valve 21b is closed, and the first row discharge valve 22a is closed. The discharge valve 22b for the second row is open, the transfer piston 9a for the first row is stationary at the maximum stroke position of discharge, and the pusher piston 1a for the first row rises maximum in conjunction with this. The second row transfer piston 9b is stationary at the maximum suction stroke position, and the second row pusher piston 1b is stationary at the maximum lowered position in conjunction with this.

  According to the second embodiment, the pusher device 100 constituted by the pusher cylinder 2a or 2b and the pusher piston 1a or 1b is interlocked with the reciprocating movement of the transfer piston 9a or 9b, and the intake valve 21a or 21b and the discharge In conjunction with the opening / closing operation of the valve 22a or 22b, the fluid transport material 7 from the screw conveyor 4a or 4b is pressurized and supplied to the transport material filling chamber 8a or 8b communicated with the suction side of the transport piston 9a or 9b. In the pusher controller 13 (see FIG. 1), based on the detected value of the transfer piston displacement by the piston displacement sensor 12a or 12b, the pusher piston 1a or 1b moves the transfer cylinder 10a based on the detected value of the transfer piston 9a or 9b. Or Since the fluid transport material 7 is pressurized and supplied into 0b, the fluid transport material 7 is filled into the entire suction volume of the transport cylinder 10a or 10b at the optimum timing of the suction stroke of the transport piston 9a or 9b. It becomes possible.

FIG. 7 is a view corresponding to FIG. 5 of a double row piston pump according to a third embodiment of the present invention.
In this embodiment, the suction valve 21a or 21b is removed from the second embodiment shown in FIGS. 5 to 6, and the pusher piston 1a or 1b is also used as the suction valve 21a or 21b. This eliminates the need for the suction valve and its driving device, and provides a piston pump with a simple structure and reduced device cost and running cost.
Other configurations are the same as those of the second embodiment (FIG. 5), and the same members are denoted by the same reference numerals.

FIG. 8 is a view corresponding to FIG. 5 of a double row piston pump according to a fourth embodiment of the present invention.
In this embodiment, in contrast to the fifth embodiment, the first row screw conveyor 4a and the second row screw conveyor 4b are connected to the first row hopper 6a and the cylinder 32a. The piston 31a is slidably fitted in the cylinder 32a, the cylinder 32b is in communication with the second row of hoppers 6b, and the piston 31b is slidably fitted in the cylinder 32b.
In this case, since the fluid transported material is transported by the reciprocating motion of the conveyor piston 31a or 31b slidably fitted in the cylinder 32a or 32b, the fluid transported material can be pressurized and transported. Transport efficiency can be obtained.

  9A and 9B show a first example of the pusher device in each of the embodiments, wherein FIG. 9A is a side view of the main part, and FIG. 9B is a view taken along the line ZZ in FIG. 10A and 10B show a second example of the pusher device in each of the above embodiments, in which FIG. 10A is a side view of the main part, and FIG. 10B is a view taken in the direction of arrows YY in FIG. 11A and 11B show a third example of the pusher device in each of the embodiments, wherein FIG. 11A is a side view of the main part, and FIG. 11B is a view taken along the line VV in FIG.

Here, in each of the embodiments of the present invention, the volume V1 corresponding to the transfer piston 9a or 9b of the transfer product filling chamber 8a or 8b to which the fluid transfer product is supplied by the pusher device 100 is set to the transfer piston 9a. Or it is preferable to form larger than the stroke volume V2 of 9b (V1> V2).
In addition to the above configuration, the pusher device 100 is configured in the following three modes: the first example shown in FIG. 9, the second example shown in FIG. 10, and the third example shown in FIG.

In the first example of the pusher device shown in FIG. 9, the pusher piston 1 is reduced in cross-sectional area from the conveyed product filling chamber 8 side of the pusher cylinder 2 toward the back chamber 20 formed on the back portion of the pusher piston 1. A cone-shaped or pyramid-shaped inclined portion 102 having a width c through which the fluid carrier can pass between the outer periphery of the tip portion 101 of the pusher piston 1 and the inner periphery of the pusher cylinder 2. A gap 104 is formed. Reference numeral 103 denotes a valve stem.
In the second example of the pusher device shown in FIG. 10, the back chamber 20 formed on the back of the pusher piston 1 from the pusher cylinder 2 side of the pusher piston 2 along the circumferential direction of the outer periphery. A plurality (six in this example) of grooves 105 are formed along the circumferential direction so as to communicate with each other and allow a fluid carrier to pass therethrough.
In the third example of the pusher device shown in FIG. 11, the pusher piston 1 has a back portion formed on the inner peripheral portion of the tip portion 101, on the conveyed product filling chamber 8 side of the pusher cylinder 2 and on the back portion of the pusher piston 1. A plurality of (six in this example) passage holes 106 are formed along the circumferential direction so as to communicate with the chamber 20 side and through which the fluid carrier can pass.

  According to this configuration, the volume V1 of the conveyed product filling chamber 8 is formed larger than the corresponding stroke volume V2 of the conveying piston 9 (V1> V2), and the conveyed product filling chamber 8 is formed in the pusher piston 1 of the pusher device 100. Since the small passage through which the fluid transported material communicating with the back chamber 20 can pass is formed as in the first example, the second example, and the third example, the volume of the transport piston 9 is larger than the stroke volume V2. The operation of the pusher piston 1 in accordance with the reciprocating movement of the transfer piston 9 with the back chamber 20 and the transfer material filling chamber 8 always communicating with each other through a small passage between the large transfer material filling chamber 8 and the back chamber 20 of the pusher piston 1. The resistance is reduced, and the pusher device 100 can be smoothly operated to feed the fluid transported material from the transport device into the transported material filling chamber 8.

  According to the present invention, the fluid transported material can be filled in the entire suction volume of the transport cylinder in a timely manner at the optimum timing of the suction stroke of the transport piston, and the low water content slurry and the like are not affected by the viscosity of the fluid transported material. Thus, it is possible to provide a fluid transport material transport apparatus that can be transported with high transport efficiency, has a simple structure, and has reduced apparatus cost and running cost.

It is a schematic sectional drawing (BB sectional drawing of FIG. 2) of the 1st pump row | line | column in the double row type piston pump which concerns on 1st Example of this invention. It is a horizontal direction schematic sectional drawing (AA sectional view taken on the line of FIG. 1) of the double row type piston pump in the said 1st Example. It is a schematic sectional drawing (CC sectional view taken on the line of FIG. 2) of the 2nd pump row | line | column in the said 1st Example. It is the DD sectional view taken on the line of FIG. 1 in the said 1st Example. It is a horizontal direction schematic sectional drawing in the double row type piston pump which concerns on 2nd Example of this invention. (A), (B), (C), (D) is operation | movement explanatory drawing of the piston pump in the said 2nd Example. FIG. 6 is a view corresponding to FIG. 5 of a double row piston pump according to a third embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 5 of a double row piston pump according to a fourth embodiment of the present invention. The 1st example of the pusher apparatus in each said Example is shown, (A) is a principal part side view, (B) is a ZZ arrow line view in (A). The 2nd example of the pusher apparatus in each said Example is shown, (A) is a principal part side view, (B) is a YY arrow view in (A). The 3rd example of the pusher apparatus in each said Example is shown, (A) is a principal part side view, (B) is the VV arrow directional view in (A).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a Pusher piston for 1st row 1b Pusher piston for 2nd row 2a Pusher cylinder for 1st row 2b Pusher cylinder for 2nd row 3a Pusher drive device for 1st row 3b Pusher drive device for 2nd row 4a Screw conveyor for the first row 4b Screw conveyor for the second row 6a Hopper for the first row 6b Hopper for the second row 7 Fluid transport material 8a, 8b Transport material filling chamber 9a Transport piston 9b for the first row Second row transfer piston 10a First row transfer cylinder 10b Second row transfer cylinder 11 Discharge chamber 12a, 12b Piston displacement sensor 13 Pusher controller 14 Casing 20a First row back chamber 20b Second row back chamber 21a Suction valve for first row 21b Suction valve for second row 22a Discharge valve for first row 22 Discharge valve 31a for the second row, 31b conveyor piston 32a, 32b cylinder (conveyor)
100 pusher device 102 inclined portion 105 groove 106 passage hole

Claims (11)

  In a fluid transport material transporting device that pumps a slurry-like fluid transport material supplied from a transport device to a destination through a discharge chamber by a transport piston that reciprocates in a transport cylinder, between the transport device and the transport cylinder. A fluid transporting material transporting device comprising a pusher device that pressurizes the transported material from the transporting device and supplies the pressurized material to the transporting material filling chamber in conjunction with the reciprocating motion of the transporting piston.   The pusher device reciprocates in conjunction with the reciprocating motion of the transport piston in the pusher cylinder communicated with the transported material supply port of the transport device, and adds the transported material from the transported material supply port. A pusher piston that pressurizes and feeds the conveyed product to the conveyed product filling chamber, and is configured to pressure-feed the conveyed product that is pumped to the conveyed product filled chamber by the pusher piston through the discharge chamber to the use destination. The fluid transporting material transporting apparatus according to claim 1, wherein:   A pusher driving device that drives the pusher device; a piston displacement sensor that detects displacement of the transfer piston; and a detection value of the transfer piston displacement from the piston displacement sensor, and the pusher based on the transfer piston displacement detection value 3. A fluid transporting material transport device according to claim 2, wherein the fluid transporting material is pushed into the transport material filling chamber by the pusher piston during a suction stroke of the transport piston. .   The pusher controller is configured such that the pusher piston stops the pusher piston at a position after the fluid transported material is pushed into the transported material filling chamber, and causes the transport piston to operate in a discharge stroke. The fluid transportable material transport apparatus according to claim 3.   The pusher controller causes the transfer piston to operate in a discharge stroke at a position after the pusher piston is pushed in, and the transfer material filling chamber and the discharge chamber that the pusher piston faces by the transfer piston in the latter half of the stroke of the transfer piston. The fluid transportable material transport apparatus according to claim 3, wherein the pusher piston is used as a pulling step in a state in which the pusher piston remains in the position.   The volume V1 corresponding to the transfer piston of the transfer object filling chamber to which the transfer object is supplied by the pusher device is formed larger than the stroke volume V2 of the transfer piston (V1> V2). Fluid transport material transport device.   A fluid transport material transport configured to pump a slurry-like fluid transport material supplied via a suction valve by a transport device to a discharge chamber via a discharge valve by a transport piston that reciprocates in a transport cylinder. In the apparatus, a pusher device that pressurizes a conveyed product from the conveying device between the conveying device and the suction valve in conjunction with a reciprocating movement of the conveying piston and supplies the pressurized material to the conveyed product filling chamber via the suction valve. The pusher device communicates with the conveyed product supply port of the conveying device, and the pusher device reciprocates in the pusher cylinder in conjunction with the reciprocating motion of the conveying piston and conveys from the conveyed product supply port. A fluid transporting material transporting apparatus comprising a pusher piston that pressurizes a material and supplies it to the transporting material filling chamber.   The pusher piston includes a cone-shaped or pyramid-shaped inclined portion whose cross-sectional area is reduced toward the back chamber formed on the back of the pusher piston from the conveyed product filling chamber side of the pusher cylinder, 8. The fluidity according to claim 2, wherein a minute gap is formed between the outer periphery of the pusher piston and the inner periphery of the pusher cylinder so that the conveyed product can pass therethrough. 9. Conveyance device.   The pusher piston has a plurality of grooves through which the conveyed product can pass through the circumferential direction of the outer periphery from the conveyed product filling chamber side of the pusher cylinder to the back chamber side formed at the back of the pusher piston. The fluid transported material transport device according to claim 2, wherein the transportable material transport device is formed individually.   The pusher piston has a plurality of passage holes through which the conveyed product can pass through the inner periphery of the pusher piston communicating with the conveyed product filling chamber side of the pusher cylinder and the back chamber side formed at the back of the pusher piston. The fluid transported material transport device according to claim 2, wherein the fluid transport material transport device is formed by perforation.   The said conveying apparatus was comprised by the cylinder connected to the hopper in which a fluid conveyance thing is accommodated, and the piston type feeder fitted so that sliding in this cylinder was possible. Fluid transport material transport device.

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