TW201604407A - Pumping device - Google Patents

Abstract

The objective is to provide a pumping device which has good maintainability and with which a constant quantity of a fluid can be transferred without pulsation. This pumping device (10) has a pump mechanism portion (20) that is provided with a uniaxial eccentric screw pump mechanism (25) formed by combining a stator (22) and a rotor (24). Furthermore, the pumping device (10) has a support structure portion (60) that can support the pump mechanism portion (20) in a state of being immersed in a fluid that is being stored in a storage tank (15), and a discharge path (100) that is connected directly or indirectly to the stator (22) and leads the fluid discharged from the stator (22) to the exterior of the storage tank (15). The pumping device (10) can assemble and disassemble the pump mechanism portion (20) by moving the rotor (24) in the axial direction in relation to the stator (22) which is being supported by the support structure portion (60).

Description

Pick-up device

The present invention relates to a scooping device for scooping a fluid body as a pressure-feeding object from a storage tank.

In the related art, the vertical sedimentation type axial flow pump of the following Patent Document 1 has been provided as a scooping device for scooping a fluid body to be a pressure-feeding object from a storage tank. The upright type sedimentation pump of Patent Document 1 is for extracting a metal which is formed into a molten state for molding or the like. In the upright type decanter pump, a cylindrical case is fixed at a lower end of a thin-walled draft tube having a discharge port, and an upper end portion is coupled to a motor. Further, an axial flow impeller is fixed to the lower end portion of the hollow shaft inserted into the thin-walled draft tube, and is disposed in the casing.

[Previous Technical Literature] [Patent Document]

Patent Document 1: Japanese Patent Laid-Open Publication No. 2001-329987

Here, the upright type decantation pump of Patent Document 1 is constituted by a scroll type pump, and is integrally formed integrally. Therefore, when performing a warranty or the like, it is necessary to pull out the entire pump from the storage tank. Therefore, in the case where the upright type decanter pump or the like is used for the discharge of the fluid body, there is a problem that the warranty takes a considerable amount of time.

Further, since the above-described upright type decanter pumping is constituted by a scroll type pump, there is a problem that the fluid body cannot be quantitatively transferred without pulsation. Therefore, when the metal formed in a molten state is directly supplied to a molding machine or the like by using the above-described upright type decanter pump or the like, molding failure due to fluctuations in the supply state of the molten metal may occur. Therefore, in the case of using the above-described upright type decanter pump or the like, there is a problem that it is necessary to adopt a method for eliminating fluctuations in the supply state of the molten metal.

Accordingly, it is an object of the present invention to provide a scooping apparatus that is highly warranties and capable of quantitatively transferring a fluid body without pulsation.

In order to solve the above-described problems, the present invention is a pick-up device that picks up the fluid from a storage tank in which a fluid to be pumped is stored, and has a pumping mechanism portion, a support structure portion, and an extraction path. The pump mechanism unit includes a pump mechanism unit of a uniaxial eccentric screw pumping mechanism having a stator having an inner circumferential surface forming a female screw type and eccentricity in the stator by receiving power a rotating male screw type rotor, and the fluid body can be sucked from a suction port formed on one end side of the stator by eccentrically rotating the rotor And being discharged from the discharge port formed on the other end side; and the support structure portion is supported in a state where the pump mechanism portion is immersed in the fluid body stored in the storage tank; The lead-out passage is directly or indirectly connected to the discharge port of the stator, and the flow body discharged from the discharge port is led out to the outside of the storage tank; and is supported by the support structure portion The stator moves the rotor in the axial direction, whereby assembly and disassembly of the pump mechanism portion can be performed.

In the scooping device of the present invention, the rotor is moved in the axial direction with respect to the stator supported by the support structure portion, whereby assembly and disassembly of the pump mechanism portion can be performed. Therefore, the scooping device of the present invention is excellent in terms of warranty.

Moreover, in the scooping apparatus of the present invention, the pump mechanism unit is provided with a uniaxial eccentric screw pumping mechanism. Therefore, according to the scooping apparatus of the present invention, by controlling the relative rotation amount of the rotor to the stator, the flow body can be quantitatively and pulsated without pulsation.

The above-described scooping device of the present invention preferably includes a power mechanism portion including a power source that supplies power to the rotor, and the power mechanism portion and the pump mechanism portion are capable of blocking the fluid body. Isolation by way of communication.

According to this configuration, it is possible to suppress a problem that the flow body discharged on the pump mechanism portion side reaches the side of the power mechanism portion.

Further, in the above-described scooping device of the present invention, it is preferable that the support structure portion is capable of causing the stator in the storage tank The pump mechanism portion is supported in an exposed state.

According to this configuration, the pump mechanism unit can be isolated from the power source or the like, and the fluid discharged from the pump mechanism unit side can be prevented from reaching the power source or the like.

The above-described scooping device of the present invention may further include a housing tube that is closed at one end side and has an opening portion on the other end side, and the pump mechanism portion is housed inside the housing tube; The opening is disposed in a state in which the opening portion faces the bottom side of the storage tank, and the opening portion is positioned closer to a bottom side of the storage tank than the suction port.

In the case of such a configuration, by operating the pumping mechanism unit, the fluid can be taken in from the opening of the housing tube at a position lower than the suction port, and will be taken in. The fluid to the receiving cylinder is drawn up to the suction port and pumped. Therefore, according to the scooping apparatus of the present invention, it is possible to inhale and pressurize the fluid body stored in the lower side than the suction port of the stator.

The above-described scooping device of the present invention preferably includes a power transmission member that connects a power source that supplies power to the rotor and the rotor so as to transmit power; the housing tube is coupled to the power Passing components.

According to this configuration, the positional relationship between the accommodating cylinder and the pumping mechanism portion can be fixed, and the suction performance or the discharge performance of the fluid in the pumping mechanism portion can be stabilized.

The above-described scooping device of the present invention may also have: The accommodating cylinder driving device is configured to move the accommodating cylinder toward or away from a bottom surface of the storage tank or in a direction of another member disposed along the bottom surface; and to close the storage cylinder to the bottom surface or the other member. Thereby, the opening can be closed by the bottom surface or other members thereof.

According to this configuration, the opening of the housing tube can be closed while the pressure feed of the fluid body is stopped, and the flow body can be prevented from flowing into the housing tube. Thereby, it is possible to suppress the flow body from being supplied to the pump mechanism portion when the pressure feed of the fluid body is stopped, and to suppress the discharge of the fluid body other than the assumption in the pump mechanism portion.

In the above-described stator according to the present invention, the stator may have a through-hole that is formed in a female thread shape so as to penetrate between a pair of end faces formed on one end side and the other end side in the axial direction. The stator is inserted into the through hole, and has a closing portion driving device that can close the blocking portion of one end of the housing tube and close to and away from the stator housed inside the housing tube In the state in which the flow body is stopped, the closing portion is formed to be closer to the end surface of the one side of the stator than in the squeezing state.

In the scooping apparatus of the present invention, in a state in which the ejection of the fluid is stopped, the end surface of the closing surface is closer to the one side of the stator than in the scooping. Thereby, the fluid body does not easily flow between the end surface and the closing surface, and the fluid body does not easily flow into the through hole of the stator. Therefore, by bringing the blocking surface closer to the end surface of the stator, it is possible to suppress the flow body from flowing into the through hole, and Suppress the leakage of the fluid.

In the above-described support device of the present invention, it is preferable that the support structure portion has a connection member that connects and supports the stator, and the connection member includes a connection portion that can be on the discharge port side. The stator and the communication passage are connected to the stator connected to the connection portion, and the extension path is connected to the communication passage.

According to this configuration, the stator can be connected to the connecting member, and the stator can be connected to the lead-out path through the communication passage.

Here, in the case where the pumping mechanism portion is immersed in the fluid body stored in the storage tank as described above, it is preferable to consider in advance a high differential pressure acting on the fluid body stored in the storage tank (head) The possibility of leakage due to the influence of pressure). Further, it is preferable to consider a phenomenon in which the fluid body leaks due to the principle of siphoning by a slight gap formed between the rotor and the stator.

In the above-described support structure, the support structure includes a connection member that connects and supports the stator, and the connection member includes a connection portion that can be configured as described above. a discharge port that connects the stator and a communication passage that communicates with the stator that is coupled to the connection portion, and the pick-up device includes a storage cylinder drive device that can approach the storage tube toward and away from the connection portion a directional operation; the connecting portion is provided along a bottom surface of the storage tank; and the communication passage is continuous The discharge port of the stator is formed to extend in the axial direction of the stator; the rotor is directly or indirectly connected to the housing tube, and is capable of being formed by the storage tube driving device The operation of the accommodating cylinder is operated in the axial direction, and the opening is closed by abutting the accommodating cylinder against the connecting portion, and the front end side of the rotor has entered the communication passage.

According to this configuration, the opening of the housing tube can be closed while the flow of the fluid is stopped, and the flow body can be prevented from flowing into the housing tube, and the flow body can be supplied to the pumping mechanism unit. Thereby, it is possible to surely prevent the leakage of the fluid caused by the above-described influence of the high differential pressure or the principle of siphoning. Moreover, even if the storage cylinder drive device is operated and the storage cylinder is brought into contact with the connection portion, the front end side of the rotor has entered the communication passage, and does not interfere with other members. Therefore, in the scooping apparatus of the present invention, the operation for closing the opening of the accommodating cylinder can be smoothly performed when the pressure feeding of the fluid body is stopped.

According to the present invention, it is possible to provide a scooping apparatus which is highly warrantable and capable of quantitatively transferring a fluid body without pulsation.

10, 110, 210‧‧‧ out of the device

15‧‧‧reservoir

17‧‧‧ bottom

20‧‧‧Pumping Department

22a, 22b‧‧‧ end face

22‧‧‧ Stator

24‧‧‧Rotor

25‧‧‧ pumping mechanism

26‧‧‧ inner perimeter wall

30‧‧‧through holes

32‧‧‧Inhalation

34‧‧‧Exporting

36‧‧‧ peripheral wall

38‧‧‧Fluid transport road

40‧‧‧Power Institutions Department

42‧‧‧ drive machine

44‧‧‧Power transmission mechanism

46‧‧‧Shell

46a‧‧‧ base end

46b‧‧‧ front end

48‧‧‧Power Transmission Department

50‧‧‧Eccentric rotation

52, 152‧‧‧ shaft body

53, 253‧‧ ‧ pin joints

60, 260‧‧‧Support Structure Department

61, 261‧‧ ‧ body department

61a‧‧ ‧ pillar

61b‧‧‧ top board

61c‧‧‧ hole

63, 163, 263 ‧ ‧ pump support

66‧‧‧Support members

68, 168‧‧‧ Linked components

70‧‧‧Connected component ontology

70a‧‧‧ upper surface

72‧‧‧Connecting Department

74, 174‧‧‧Connected Road

76‧‧‧Connecting port

80‧‧‧ receiving cylinder

82‧‧‧ openings

84‧‧‧ Closed surface

86‧‧‧ gap

90‧‧‧Handling unit

100‧‧‧Export

102‧‧‧Pipe

120‧‧‧Actuator

220‧‧‧External components

222‧‧‧ Seal

224‧‧‧Connecting port

230‧‧‧Export

232‧‧‧ overflow

234‧‧‧Overflow tube

225‧‧‧Links

Fig. 1 is a view showing the configuration of a device of a scooping device according to an embodiment of the present invention.

Fig. 2 is a view showing the configuration of the loading and unloading unit.

Fig. 3 is a view showing the configuration of a device of the first embodiment.

Fig. 4 is a view showing the configuration of a device of the second embodiment.

Fig. 5 is a view showing the configuration of the device of the third embodiment.

Hereinafter, the scooping device 10 according to an embodiment of the present invention will be described in detail with reference to the drawings. As shown in Fig. 1, the scooping device 10 is provided for the storage tank 15 in which the fluid to be pumped is stored, and is used for the fluid in the storage tank 15. The scooping device 10 is roughly divided into a pump mechanism unit 20, a power mechanism unit 40, a support structure unit 60, a housing tube 80, and an extension path 100.

The pump mechanism unit 20 is constituted by a pumping mechanism of a rotary displacement type. In the present embodiment, the pump mechanism unit 20 includes a uniaxial eccentric screw pumping mechanism 25 composed of a combination of the stator 22 and the rotor 24.

The stator 22 is a member having a substantially cylindrical outer shape formed of an elastomer such as rubber or a resin, ceramic, metal, carbon composite or the like. The inner peripheral wall 26 of the stator 22 is formed in the shape of n and single or multiple segments of a female screw. In the present embodiment, the stator 22 is formed in a shape of two or more female threads. Further, the through hole 30 of the stator 22 penetrates between the end faces 22a and 22b formed at both ends of the stator 22. The through hole 30 is a section which is viewed in the longitudinal direction of the stator 22, and is cut in section. The surface shape (opening shape) is formed into a substantially oblong shape. The opening on one end side of the stator 22 functions as a suction port 32 for sucking the fluid body, and the opening on the other end side functions as a discharge port 34 for discharging the fluid. The stator 22 can be supported in a state of being erected in the storage tank 15 by the support structure portion 60 which will be described later in detail.

The rotor 24 is a metal shaft body and is formed in the shape of n-1 single-stage or multi-stage male screw. In the present embodiment, the rotor 24 is formed in a single eccentric male thread shape. The rotor 24 has a cross-sectional shape that is substantially rounded regardless of the position in the longitudinal direction. The rotor 24 is inserted into the through hole 30 formed in the stator 22 described above, and is freely eccentrically rotatable inside the through hole 30.

When the rotor 24 is inserted into the stator 22, a fluid transfer path 38 (cavity) can be formed between the inner peripheral wall 26 of the stator 22 and the outer peripheral wall 36 of the rotor 24. When considering the conveyance precision of the flow body in the pump mechanism unit 20, etc., it is preferable that the stator 22 and the rotor 24 are in a state in which the inner peripheral wall 26 and the outer peripheral wall are in close contact with each other. The fluid transfer path 38 extends in a spiral shape toward the longitudinal direction of the stator 22 and the rotor 24.

When the rotor 24 is rotated in the through hole 30 of the stator 22, the fluid transfer path 38 advances in the longitudinal direction of the stator 22 while rotating in the stator 22. Therefore, when the rotor 24 is rotated, fluid can be sucked into the fluid transfer path 38 from one end side of the stator 22, and toward the other end side of the stator 22 in a state where the fluid is blocked in the fluid transfer path 38. Transfer and spit on the other end side of the stator 22 Out. Specifically, when the rotor 24 is rotated in the forward direction, the flow of the fluid from the suction port 32 formed on one end side of the stator 22 and the discharge port 34 on the other end side can be discharged (discharge operation). . Further, by rotating the rotor 24 in the reverse direction, it is possible to perform an operation (retracting operation) in which the flow body is sucked from the discharge port 34 side in the opposite direction to the discharge operation.

The power mechanism unit 40 is configured to include a drive unit 42 as a power source of the rotor 24, a power transmission mechanism 44 for transmitting power of the drive unit 42 to the pump mechanism unit 20 side, and the like. Although the power transmission mechanism 44 or the like is housed in the casing 46, the pump mechanism portion 20 described above is provided on the outer side of the casing 46. Therefore, the power mechanism unit 40 is connected to the pump mechanism unit 20 so as to be able to transmit power to the pump mechanism unit 20, but is not separated from the pump unit 20 by the flow body.

The power transmission mechanism 44 is for transmitting power from the driver 42 to the rotor 24 described above. The power transmission mechanism 44 has a power transmission portion 48 and an eccentric rotation portion 50. The power transmission unit 48 is configured to transmit power from the driver 42 to the eccentric rotating unit 50 and is housed in the base end portion 46a of the casing 46. Further, the eccentric rotating portion 50 is housed in the front end portion 46b of the casing 46. The eccentric rotating portion 50 is a portion that connects the power transmission portion 48 and the rotor 24 so that power can be transmitted. As shown in FIG. 1 , an Oldham's coupling can be used as the eccentric rotating portion 50 to connect the shaft body 52 to the power transmission portion 48 side and the rotor 24 side. Instead, as shown in Figure 2, it can also be shaped The both ends of the shaft body 52 such as a coupling rod are transmitted through the joints of the pin joints 53, 53 and the like, and are connected to the power transmission portion 48 side and the rotor 24 side. By connecting the power transmitting portion 48 side and the rotor 24 side through the eccentric rotating portion 50, the rotational force generated by the driving machine 42 can be transmitted to the rotor 24, and the rotor 24 can be eccentrically rotated.

The support structure portion 60 is supported while the pump mechanism portion 20 is immersed in the fluid body stored in the storage tank 15, and is positioned while the power mechanism portion 40 is positioned in the pump mechanism portion 20. Settings. The support structure portion 60 has a body portion 61 and a pump support portion 63 for supporting the pump mechanism portion 20. The support structure portion 60 is formed to have a structure in which the pump support portion 63 is coupled to the main body portion 61.

The main body portion 61 is a ladder member that is connected to the upper end side of the plurality of pillars 61a that are erected on the outer side of the storage tank 15, and is connected to the top plate 61b that is substantially horizontal. The top plate 61b of the main body portion 61 is provided with a hole 61c into which the front end portion 46b of the casing 46 constituting the power mechanism portion 40 described above can be inserted. The power mechanism unit 40 has the side surface of the front end portion 46b facing downward (storage groove 15) side, and is inserted from the upper side of the top plate 61b toward the hole 61c so as to be inserted into the front end portion 46b. In this way, the power mechanism unit 40 is provided in a state in which the main body portion 61 is positioned in a state where the front end portion 46b side protrudes downward from the top plate 61b. In this state, the distal end portion 46b is positioned further away from the liquid surface of the fluid located in the storage tank 15.

The pump support portion 63 can be supported in a state where the stator 22 is exposed in the storage tank 15. Specifically, the pump support portion 63, the tie There are a support member 66 and a joint member 68.

The support member 66 is supported in a state in which the joint member 68 has been suspended in the storage tank 15. One end side (upper end side) of the support member 66 is connected to the front end portion 46b of the casing 46. Thereby, the support member 66 can be fixed so as to extend downward (on the side of the storage groove 15). Further, the other end side (lower end side) of the support member 66 is connected to the coupling member 68. Thereby, the joint member 68 can be supported by the support member 66 being suspended below the top plate 61b of the main body portion 61.

The connecting member 68 has a connecting member body 70, a connecting portion 72, a communication path 74, and a connecting port 76. The outer shape of the joint member body 70 is formed into a flat plate shape, and is supported along the bottom 17 side of the storage tank 15 by the support member 66 which will be described later. The connecting portion 72 is erected on the upper surface 70a side of the connecting member body 70. The connecting portion 72 is a tubular body that is opened upward and can be inserted into the stator 22 with substantially no gap. When the stator 22 is inserted into the joint portion 72, the joint member 68 and the stator 22 are connected. The communication path 74 is a flow path formed in the connection member body 70. The communication passage 74 is formed to communicate with the coupling portion 72 and to reach the connection port 76 provided on the top surface of the coupling member body 70. An outlet path 100 is connected to the connection port 76.

The housing tube 80 is hollow and has a cylindrical body having an opening 82 on one end side and a closed end 84 on the other end side. The housing tube 80 is such that the opening portion 82 faces the bottom 17 side of the storage tank 15, and is closed. The plug surface 84 is provided on the liquid surface side in a state of the plug surface 84. The housing 52 is inserted into the housing tube 80 so as to penetrate the blocking surface 84 substantially perpendicularly. Therefore, the rotor 24 connected to the shaft body 52 is present in the housing tube 80. Therefore, the state in which the pump mechanism unit 20 is housed in the housing tube 80 is obtained by inserting the rotor 24 into the stator 22 that is coupled and supported by the coupling member 68. Further, a gap 86 is formed between the lower end portion of the housing tube 80 and the upper surface 70a of the coupling member body 70 constituting the coupling member 68. Therefore, as shown by the arrow in Fig. 1, the flow body located in the storage tank 15 can be taken into the storage cylinder 80 through the gap 86.

The lead-out path 100 is constituted by a pipe 102 connected to the connection port 76 of the connection member body 70. The piping 102 is raised from the connection port 76 to a height exceeding the liquid level of the fluid body, and reaches the outer side of the storage tank 15. The lead-out path 100 is indirectly connected to the flow path of the discharge port 34 of the stator 22 through the communication path 74 provided in the connection member 68. Therefore, the flow path 100 can be led out to the outside of the storage tank 15 by the flow body which is pumped by the pump mechanism unit 20.

The above-described scooping device 10 of the present embodiment moves the rotor 24 in the axial direction with respect to the stator 22 that is formed in the vertical state in the storage tank 15, whereby the assembly of the pumping mechanism unit 20 can be performed. break down. Here, as shown in Fig. 2, in the present embodiment, the detachable unit 90 can be formed by connecting the rotor 24 to the shaft body 52 of the power mechanism unit 40. Further, the stator 22 is formed such that the through hole 30 is positioned substantially directly below the hole 61c provided in the support structure portion 60, and is supported in the storage groove 15. Therefore, starting with the rotor 24, The detachment unit 90 is inserted into the hole 61c of the support structure portion 60 from above the top plate 61b, and the rotor 24 can be inserted into the through hole 30 of the stator 22, and assembled into the pump mechanism portion 20. On the other hand, the detachment unit 90 is moved in the axial direction and the rotor 24 is detached from the stator 22, whereby the pump mechanism portion 20 can be disassembled. Therefore, the dispensing device 10 of the present embodiment can easily perform the warranty.

Further, in the scooping device 10 of the present embodiment, a uniaxial eccentric screw pumping mechanism 25 is provided as the pumping mechanism unit 20. Therefore, according to the squeezing device 10, by controlling the relative rotation amount of the rotor 24 to the stator 22, the flow body can be quantitatively pulsated without pulsation.

In the above-described pick-and-place device 10, the power mechanism unit 40 and the pump mechanism unit 20 are connected so as to be capable of transmitting power, but are isolated such that the fluid does not travel between the two. Specifically, in the scooping device 10, the stator 22 is supported in a state where it is exposed in the storage tank 15, and the discharge port 34 is not connected to the power mechanism portion 40 side. Therefore, it is possible to suppress a problem that a flow body discharged on the side of the pump mechanism unit 20 reaches the side of the power mechanism unit 40.

In the above-described scooping device 10, the support structure portion 60 is provided with a coupling member 68 that connects and supports the stator 22. Further, the connecting member 68 is provided with a connecting portion 72 that is capable of connecting a portion on the side of the discharge port 34 of the stator 22, and a communication passage 74 that communicates with the stator 22 connected to the connecting portion 72. An outlet path 100 is connected to the connection port 76 at the end of the communication path 74. Therefore, if the stator 22 is coupled to the connecting member 68, the stator 22 can be connected through the communication path 74. Connected to the export path 100.

In the above-described scooping device 10, the pump mechanism portion 20 is housed inside the housing tube 80, and the opening portion 82 of the housing tube 80 is positioned closer to the bottom 17 side of the storage tub 15 than the suction port 32. Therefore, by operating the pumping mechanism unit 20, the fluid can be taken in from the opening 82 at a position lower than the suction port 32 to the inside of the housing tube 80, and drawn up to the suction port 32. Pressure delivery. Therefore, according to the scooping device 10, it is possible to suck and press the fluid that is stored below the suction port 32 of the stator 22.

Further, in the scooping device 10, the housing tube 80 is coupled to the shaft body 52 that connects the driver 42 and the rotor 24. Therefore, the positional relationship between the accommodating cylinder 80 and the pumping mechanism portion 20 can be fixed, and the suction performance or the discharge performance of the fluid in the pumping mechanism portion 20 can be stabilized.

The above-described scooping device 10 may be configured such that a vane or a screw is provided to the housing tube 80, and the flow body in the storage tank 15 can be stirred. According to this configuration, the retention of the fluid in the storage tank 15 can also be suppressed.

Further, as shown in Fig. 3, the housing tube 80 may not be provided. According to this configuration, the configuration of the device of the scooping device 10 can be simplified only by not providing the housing tube 80.

Here, in the case where a fluid having a high temperature state like a molten metal is used as a pressure-fed object, thermal expansion or thermal contraction of the stator 22 and the rotor 24 can be assumed. Therefore, since a gap is formed between the stator 22 and the rotor 24, the flow body is stopped by stopping the pump mechanism portion 20. Since the possibility of leakage is preferred, it is preferable to adopt a method for suppressing leakage of the fluid in advance.

Specifically, for example, the scooping device 110 shown in Fig. 4 can be formed. Hereinafter, the throwing device 110 will be described. In addition, the same code|symbol is attached|subjected about the same with the s

The scooping device 110 is provided with an actuator 120. The actuator 120 functions as both a housing cartridge driving device and a blocking portion driving device. In other words, the actuator 120 can integrally move the housing tube 80 coupled to the shaft body 52 and the power mechanism unit 40 up and down. Therefore, the actuator 120 can be brought close to the bottom 17 side of the storage tubing 15 (in the present modification, other members (connecting members 168) disposed along the bottom 17) The function of the receiving cylinder drive device. Further, the actuator 120 can be configured such that the closing surface 82 of the housing tube 80 is opposed to the end surface 22a of the upper end side of the stator 22 provided in the housing tube 80 by the movement of the housing tube 80 (inhalation is formed). The function of the occlusion drive device that is close to and away from the face of the port 32. By operating the actuator 120 and bringing the storage tube 80 into contact with the bottom 17 side (the connecting member 168 in the present embodiment), the opening 82 can be closed. When the flow of the fluid body caused by the pump mechanism unit 20 is stopped, by closing the opening portion 82 as described above, it is possible to avoid the flow body from flowing into the inside of the storage tube 80, and it is possible to suppress the flow body from being stopped. Expected to leak. Further, by bringing the closing surface 82 close to the end surface 22a of the stator 22, the distance between the end surface 22a and the closing surface 82 can be reduced. By this, the flow The moving body does not easily flow between the end surface 22a and the closing surface 82, and the flowing body does not easily flow into the through hole 30 of the stator 22. Therefore, by bringing the closing surface 82 close to the end surface 22a, it is possible to suppress the flow of the fluid into the through hole 30 and suppress the leakage of the fluid.

Further, in the example shown in Fig. 4, a gap is formed between the end surface 22a and the closing surface 82 even in a state where the storage tube 80 is moved toward the bottom 17 side until the opening 82 is closed. However, the invention is not limited thereto. In other words, the closing surface 82 may be covered by the end surface 22a, and the opening of the through hole 30 formed in the end surface 22a may be closed by the closing surface 82. According to this configuration, it is possible to more reliably prevent the fluid from flowing into the through hole 30 and prevent leakage of the fluid.

Moreover, in the example shown in FIG. 4, the blocking surface 82 is integrally formed in the housing tube 80. Therefore, the actuator 120 can function as both the storage cylinder drive device and the closing portion drive device. However, the invention is not limited thereto. In other words, when the blocking surface 82 can be independently operated from the main body portion of the housing tube 80, the housing driving device for driving the main body of the housing tube 80 and the blocking surface 82 can be separately provided. The occlusion drive.

Further, in the example shown in Fig. 4, the shaft body 152 composed of a flexible rod is connected to the rotor 24 side and the power transmission portion 48 side, but the first one described above may be employed. The shaft 52 of the example shown in Fig. 2 or Fig. 2 is substituted.

Moreover, in the scooping device 110, a pump support is provided The portion 163 replaces the pump support portion 63 of the scooping device 10. The pump support portion 163 is provided with a coupling member 168 supported by the support member 66. The connecting member 168 is common to the connecting member 68 of the pick-up device 10 at a point where the tubular connecting portion 72 into which the stator 22 can be inserted is provided. The connection member 168 is different from the connection member 68 in that the communication path 174 is provided instead of the communication path 74. The communication passage 174 is formed to communicate with the through hole 30 of the stator 22 attached to the coupling member 168 and to extend on the same axis as the through hole 30. The communication passage 174 penetrates the bottom 17 of the storage tank 15 and reaches the outer side of the storage tank 15. Therefore, when the storage tube 80 is brought into contact with the connection portion 72 and the opening portion 82 is closed, the front end side of the rotor 24 does not interfere with other members but enters the communication path 74. Therefore, according to the squeezing device 110, the operation for closing the opening portion 82 of the accommodating cylinder 80 can be smoothly performed when the pressure feeding of the fluid body is stopped.

In any case, the stator 22 of the pumping mechanism unit 20 is provided with the stator 22 so that the suction port 32 is higher than the discharge port 34 (liquid level side), but the stator 22 is provided. The invention is not limited thereto. Specifically, the scooping device 210 shown in Fig. 5 can be formed. Hereinafter, the throwing device 210 will be described. In addition, the same components as those of the squeezing devices 10 and 110 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The scooping device 210 is different from the scooping devices 10 and 110 in that the support structure portion 260 is provided instead of the support structure portion 60. The support structure portion 260 has a frame-shaped body portion 261 for supporting the casing 46 of the power mechanism portion 40 instead of the body portion 61. Again, the support structure The portion 260 has a pump support portion 263 instead of the pump support portion 63.

The pump support portion 263 is a hollow cylinder that is erected so as to reach the upper side than the liquid surface from the liquid stored in the fluid in the storage tank 15. The pump support portion 263 is connected to the casing 46 of the power mechanism portion 40 at one end side (upper end side). A seal 222 is provided between the pump support portion 263 and the casing 46, and is formed so as not to flow between the two.

The other end side (lower end side) of the pump support portion 263 is formed as an open end, and the stator 22 is connected. The stator 22 is supported by the pump support portion 263 in a state where the end portion on the discharge port 34 side is inserted into the open end of the pump support portion 263. Therefore, in the scooping device 210, the suction port 32 of the stator 22 is located below the discharge port 34 (bottom 17) side.

In the scooping device 210, the coupling rod 252 may be used instead of the shaft body 52 in the example of Fig. 1, and both end portions may be connected to the rotor 24 side and the power transmission portion 48 side by pin joints 253, 253. At the front end of the coupling rod 252, a rotor 24 is attached. The coupling rod 252 is inserted into the inside of the pump support portion 263, and the rotor 24 is inserted through the through hole 30 of the stator 22.

Further, a connection port 224 is provided at a position on the upper side in the axial direction of the outer structural member 220 and above the liquid surface of the fluid body. A pipe constituting the lead-out path 230 is connected to the connection port 224. Further, an overflow port 232 is provided above the connection port 224 and below the seal 222. At the overflow port 232, there is an overflow The flow tube 234 can return the flow body that has not been completely discharged from the pump support portion 263 to the delivery path 230 to the storage tank 15 side.

The scooping device 210 can suck the fluid from the suction port 32 that opens toward the bottom 17 side of the storage tank 15 by operating the pump mechanism unit 20, and can be directed toward the storage tank via the pump support portion 263 and the lead-out passage 230. 15 outside the out.

Even when the configuration is such as the squeezing device 210, the pump mechanism unit 20 can be independent from the power mechanism unit 40, and the warranty of the pump mechanism unit 20 can be easily performed.

[Industrial Applicability]

The scooping device of the present invention can be utilized in all of the applications of the fluid to be pumped from the storage tank. The scooping device of the present invention can be suitably utilized even in the case where the fluid is heated at a high temperature such as molten metal.

10‧‧‧Exporting device

20‧‧‧Pumping Department

22‧‧‧ Stator

22a, 22b‧‧‧ end face

24‧‧‧Rotor

25‧‧‧ pumping mechanism

26‧‧‧ inner perimeter wall

30‧‧‧through holes

32‧‧‧Inhalation

34‧‧‧Exporting

36‧‧‧ peripheral wall

38‧‧‧Fluid transport road

40‧‧‧Power Institutions Department

42‧‧‧ drive machine

44‧‧‧Power transmission mechanism

46‧‧‧Shell

46a‧‧‧ base end

46b‧‧‧ front end

48‧‧‧Power Transmission Department

50‧‧‧Eccentric rotation

52‧‧‧Axis

60‧‧‧Support Structure Department

61‧‧‧ Body Department

61a‧‧ ‧ pillar

61b‧‧‧ top board

63‧‧‧Pump support

66‧‧‧Support members

68‧‧‧Connected components

70‧‧‧Connected component ontology

70a‧‧‧ upper surface

72‧‧‧Connecting Department

74‧‧‧Connected Road

76‧‧‧Connecting port

80‧‧‧ receiving cylinder

82‧‧‧ openings

84‧‧‧ Closed surface

86‧‧‧ gap

90‧‧‧Handling unit

100‧‧‧Export

102‧‧‧Pipe

Claims (9)

A scooping device is a scooping device that scoops out the fluid body from a storage tank in which a fluid to be pumped is stored, and has a pumping mechanism portion, a support structure portion, and an outlet path, and the pumping mechanism portion has a single A shaft eccentric screw pumping mechanism having a female shaft-shaped stator having an inner circumferential surface and a male screw type eccentrically rotating in the stator by receiving power, and capable of borrowing By rotating the rotor eccentrically, the fluid body is sucked from a suction port formed on one end side of the stator, and is discharged from a discharge port formed on the other end side; and the support structure portion is capable of causing the pump The pumping mechanism is immersed in the state of the fluid body stored in the storage tank; and the outlet path is directly or indirectly connected to the spout of the stator for discharging from the spout The discharged fluid is led out to the outside of the storage tank; the rotor is oriented toward the axis with respect to the stator supported by the support structure The mobile, assembling and disassembling can be performed whereby the portion of the pumping mechanism. The scooping device according to claim 1, further comprising: a power mechanism unit including a power source that supplies power to the rotor; and the power mechanism unit and the pump mechanism unit are capable of preventing the flow The way of bodywork is isolated. The scooping device according to claim 1 or 2, wherein the support structure portion supports the pump mechanism portion in a state in which the stator is exposed in the storage tank. The scooping device according to any one of claims 1 to 3, further comprising: a housing tube that is closed at one end side and has an opening portion on the other end side; and the inside of the housing tube is accommodated The pumping mechanism unit is disposed in a state in which the opening portion faces the bottom side of the storage tank, and the opening portion is positioned closer to a bottom side of the storage tank than the suction port. The scooping device according to claim 4, further comprising: a power transmission member that connects a power source that supplies power to the rotor and the rotor so that power can be transmitted; and the housing tube is coupled to The aforementioned power transmission member. The scooping device according to Item 4 or 5, further comprising: a housing cartridge driving device configured to position the housing tube toward or away from a bottom surface of the storage tank or along the bottom surface The other members move in the direction; the receiving tube is brought close to the bottom surface or the other member, whereby the opening can be closed by the bottom surface or other members thereof. The scooping device according to any one of claims 4 to 6, wherein the stator has a female screw-shaped through hole formed in one end side and the other end side in the axial direction. a pair of end faces In the meantime, the stator can be inserted into the through hole, and the closing portion driving device can block the closing portion of one end of the housing tube, and can be received and detached from the inside of the housing tube. The end surface on one side of the stator is in a state in which the closing of the fluid body is stopped, and the closing portion is formed to be closer to the end surface of the one side of the stator than in the scooping. The scooping device according to any one of claims 1 to 7, wherein the support structure portion has a connecting member that connects and supports the stator, and the connecting member includes a connecting portion. The stator can be coupled to the discharge port side, and a communication passage that communicates with the stator connected to the connection portion, and the lead-out passage is connected to the communication passage. The scooping device according to any one of claims 4 to 8, wherein the support structure portion has a connecting member that connects and supports the stator, and the connecting member includes a connecting portion. The stator can be connected to the discharge port side; and a communication passage that communicates with the stator connected to the connection portion; The squeezing device includes a accommodating cylinder driving device that is configured to move the accommodating cylinder toward and away from the coupling portion, and the connecting portion is provided along a bottom surface of the storage tank; a continuous discharge port of the stator and extending in an axial direction of the stator; the rotor being directly or indirectly connected to the housing tube and capable of being coupled to the housing tube driving device The operation of the accommodating cylinder is caused to move in the axial direction, and the accommodating cylinder is brought into contact with the connecting portion to close the opening, and the front end side of the rotor has entered the communication passage.