WO2022153954A1

WO2022153954A1 - Discharge device and discharge system

Info

Publication number: WO2022153954A1
Application number: PCT/JP2022/000443
Authority: WO
Inventors: 昂平翁
Original assignee: 兵神装備株式会社
Priority date: 2021-01-14
Filing date: 2022-01-09
Publication date: 2022-07-21
Also published as: JP7090356B1; TWI797927B; JP2022109170A; CN116801992A; TW202227191A; KR20230130005A

Abstract

[Problem] To provide a discharge device and a discharge system which sufficiently perform air venting in a fluid accommodation part through which a fluid flows into and out from a casing, and have a high degree of freedom in the positional relationship between a fluid introduction port and an air discharge part. [Solution] This discharge device 20 has a fluid introduction part 108, a connection part 78 disposed inside the fluid accommodation part 110, and an air discharge part 100. The air discharge part 100 has an air discharge path 130 communicating with the fluid accommodation part 110. The air discharge path 130 has: an air discharge part inlet 134 which communicates with the fluid accommodation part 110 on the opposite side to a fluid introduction port 108a with the connection part 78 therebetween; and an air discharge part outlet 138 which communicates with the outside of the fluid accommodation part 110 at a position spaced apart from the air discharge part inlet 134 in one or both of the circumferential direction and the axial direction of the fluid accommodation part 110.

Description

Discharge device and discharge system

The present invention relates to a discharge device and a discharge system.

Conventionally, a discharge device such as the rotary positive displacement pump disclosed in Patent Document 1 below has been provided. The rotary positive displacement pump of Patent Document 1 includes a power transmission mechanism unit including a drive shaft for transmitting rotational power input from a drive machine, a pump mechanism unit that operates by receiving rotational power from the drive shaft, and a fluid. It is supposed to be equipped with an accommodating body having an internal space for inflow and outflow.

Utility Model Registration No. 3221980

Here, in the discharge device such as the rotary positive displacement pump of the above-mentioned conventional technique, there are many problems when the discharge operation for discharging the fluid while the air remains in the internal space where the fluid flows in and out is performed. Occurs. For example, if the fluid is discharged while the air remains in the internal space or the like, the air is mixed into the discharged fluid as bubbles. When a fluid such as an adhesive is discharged and applied linearly as in the rotary positive displacement pump of Patent Document 1, a state where the adhesive is interrupted occurs in the middle (application line breakage). There are concerns. Further, while the discharge device is performing the discharge operation, the air is compressed and reduced due to the influence of the internal pressure, but when the discharge operation is stopped, the internal pressure acting on the air is reduced and the volume of the air is expanded. May occur. When such a phenomenon occurs, there is a concern that the fluid is pushed out due to the influence of the volume expansion of the air, and so-called dripping occurs.

In order to eliminate such concerns, the present inventors, such as a uniaxial eccentric screw pump, have a shaft or a shaft inside a space in which fluid flows in and out (hereinafter, also referred to as "fluid accommodating portion"). In a discharge device in which a columnar member such as a joint is present, a configuration for reliably discharging air (air bleeding) that has entered the fluid accommodating portion was examined. As a result, when a columnar member such as a shaft is present inside the fluid accommodating portion, the fluid inlet (fluid inlet) provided at a predetermined position in the circumferential direction of the fluid accommodating portion is used. It was found that there is a concern that air bleeding will be insufficient unless a configuration (air discharge portion) for discharging air from the opposite side in the circumferential direction is provided via a columnar member.

However, with the above configuration, the positional relationship between the fluid inlet and the air discharge section is limited. Therefore, it has been found that when the air bleeding is emphasized, there is a problem that a constraint condition such as a decrease in the degree of freedom in the arrangement of the discharge device is added.

Therefore, the present invention can sufficiently bleed air in the fluid accommodating portion where the fluid flows in and out inside the casing, and also has a discharge device having a high degree of freedom in the positional relationship between the fluid introduction port and the air discharge portion, and discharge. The purpose was to provide the system.

(1) The discharge device of the present invention provided to solve the above-mentioned problems is a discharge device capable of discharging a fluid introduced into a fluid accommodating portion provided inside a casing, and is the fluid. A fluid introduction section that introduces a fluid into the accommodating portion, an internal member arranged inside the fluid accommodating portion, and an air discharge portion that discharges air from the inside of the fluid accommodating portion to the outside. The fluid inlet section has a fluid inlet that communicates with the inside of the fluid accommodating section, and the air discharge section has an air discharge path that communicates with the fluid accommodating section. The air discharge passage communicates with the fluid accommodating portion on the opposite side of the fluid introduction port via the internal member, and the fluid accommodating portion with respect to the air discharge accommodating portion inlet. It is characterized by having an air discharge portion outlet communicating with the outside of the fluid accommodating portion at a position deviated from one or both of the circumferential direction and the axial direction.

The discharge device of the present invention has a fluid introduction port provided so as to communicate with the fluid introduction portion and an air discharge portion inlet. Further, the air discharge part inlet is provided on the opposite side to the fluid body introduction port via an internal member arranged inside the fluid body introduction part. Therefore, when air flows into the fluid accommodating portion together with the fluid from the fluid introduction port, the air is discharged from the fluid introduction portion through the air discharge portion inlet on the opposite side of the internal member. Since the discharge device of the present invention has such a configuration, the air that has flowed into the fluid introduction section can be sufficiently discharged through the inlet of the air discharge section.

Further, the discharge device of the present invention is provided with an air discharge path in which the air discharge unit serves as a passage for the air discharged through the inlet of the air discharge unit. Further, the air discharge path has an air discharge part outlet communicating with the outside of the fluid storage part at a position deviated from the air discharge part inlet in either one or both of the circumferential direction and the axial direction of the fluid storage part. Have. Therefore, in the discharge device of the present invention, the air discharge part outlet is not restricted to the position of the air discharge part inlet, and one or both of the circumferential direction and the axial direction of the fluid accommodating part with respect to the air discharge part inlet. It can be installed at a position off the ground.

(2) The discharge device of the present invention described above is preferably characterized in that the internal member has an axial shape extending in the axial direction inside the fluid accommodating portion.

According to such a configuration, the air flowing into the inside of the fluid accommodating portion wraps around the outer periphery of the internal member arranged so as to extend in the axial direction at the axial position of the fluid accommodating portion, and the air flows into the fluid accommodating portion. It can be moved so as to reach the air discharge part inlet provided on the opposite side, and can be sufficiently discharged.

(3) The discharge device of the present invention described above is characterized in that the air discharge portion inlet is provided at a position on the upper side in the direction of gravity when discharging the fluid with respect to the fluid introduction port. It is good to do.

According to such a configuration, the air that has flowed into the fluid accommodating portion can be more reliably discharged to the outside of the fluid accommodating portion.

(4) In the discharge device of the present invention described above, the inflow direction of air entering the air discharge part from the fluid accommodating part through the air discharge part inlet and the discharge of air discharged from the air discharge part outlet. It is preferable that the directions are in a crossing or twisting relationship.

According to this configuration, the air that has entered the fluid storage unit from the fluid introduction unit can be discharged in a direction different from the position opposite to the fluid introduction unit.

(5) In the discharge device of the present invention described above, at least a part of the air discharge portion is a separable combination of a plurality of constituent members, and one of the constituent members constituting the air discharge portion. It is preferable that the air discharge path is opened by separating a part or the whole from other constituent members.

According to such a configuration, a part or all of the constituent members constituting the air discharge portion are separated from other constituent members to open the air discharge passage, and the inside of the air discharge passage is cleaned or maintained. It becomes possible.

(6) The discharge device of the present invention described above includes a rotor composed of a drive unit, a male screw type shaft body, a stator capable of inserting the rotor and having an inner peripheral surface formed in a female screw type, and the above. It has a connecting portion that connects the drive unit and the rotor so that the rotor can rotate eccentrically so as to revolve along the inner peripheral surface of the stator while rotating inside the stator. However, it is preferable that the connecting portion is arranged inside the fluid accommodating portion as the internal member.

According to such a configuration, air can be sufficiently bleeded in the fluid accommodating portion regardless of the existence of the connecting portion for connecting the drive unit and the rotor so as to be able to transmit power, and the fluid inlet and the air discharge unit are provided. It is possible to provide a discharge device having a high degree of freedom in the positional relationship of the above.

(7) In the discharge system of the present invention provided to solve the above-mentioned problems, a plurality of the above-mentioned discharge devices of the present invention are arranged so that the casings are close to each other, and the fluid introduction unit of each discharge device. The air discharge unit is arranged at a position away from the casing of another adjacent discharge device.

According to such a configuration, it is not necessary to adjust the interval between the plurality of discharge devices in consideration of the existence of the fluid inlet and the air discharge unit, and the casings of the discharge devices are arranged so as to be sufficiently close to each other by that amount. be able to. Therefore, according to the above-described configuration, it is possible to sufficiently bleed air and provide a discharge system having a compact configuration.

According to the present invention, it is possible to sufficiently bleed air in the fluid accommodating portion where the fluid flows in and out inside the casing, and a discharge device having a high degree of freedom in the positional relationship between the fluid inlet and the air discharge portion. A discharge system can be provided.

(A) is a front view showing a discharge system according to an embodiment of the present invention, and (b) is a right side view of the discharge system shown in (a). It is sectional drawing which showed the structure of the discharge device which concerns on one Embodiment of this invention. It is an enlarged view of the part A of FIG. FIG. 3 is a cross-sectional view taken along the line BB of FIG. It is a perspective view which shows the 1st casing part which comprises the discharge device of FIG. It is a side view which shows the 1st casing part and the 1st sealing support member which concerns on a modification. (A) is a plan view of the first casing portion of FIG. 6, and (b) is a plan view showing a state in which the first sealing support member shown in the same figure is incorporated in the first casing of FIG. It is explanatory drawing which showed the structure of the discharge device which concerns on the 1st modification. It is explanatory drawing which shows the modification of the discharge system configured by using the discharge device of FIG. It is explanatory drawing which showed the structure of the discharge device which concerns on the 2nd modification.

Hereinafter, the discharge system 10 and the discharge device 20 according to the embodiment of the present invention will be described in detail with reference to the drawings. In the following description, first, the configurations of the discharge system 10 and the discharge device 20 will be described, and then the air discharge unit 100 included in the discharge device 20 and related configurations, and the arrangement of the discharge device 20 in the discharge system 10 , The work process of the air bleeding work in the discharge device 20 will be described in detail.

<< About the configuration of the discharge system 10 and the discharge device 20 >>
The discharge system 10 supplies and mixes, for example, a fluid such as a two-component adhesive composed of a main agent and a curing agent in a plurality of systems (two systems of the first system 12 and the second system 14 in this embodiment). , Discharge. As shown in FIG. 1, the discharge system 10 includes

discharge devices

20 and 20 and a mixing unit 40.

The same discharge device 20 is used for the first system 12 and the second system 14. The discharge device 20 is composed of a rotary positive displacement pump. In the present embodiment, as shown in FIG. 2, the discharge device 20 is configured by a so-called uniaxial eccentric screw pump. The discharge device 20 has a configuration in which a rotor 52, a stator 54, a power transmission mechanism 56, and the like are housed inside the casing 50. The casing 50 is made of metal and is a cylindrical member, and a first opening 60 is provided on one end side in the longitudinal direction. A second opening 62 is provided on the outer peripheral portion of the casing 50. The second opening 62 communicates with the internal space of the casing 50 at the intermediate portion in the longitudinal direction of the casing 50.

The first opening 60 and the second opening 62 are portions that function as suction ports and discharge ports of the uniaxial eccentric screw pump forming the discharge device 20, respectively. By rotating the rotor 52 in the forward direction, the discharge device 20 can function the first opening 60 as a discharge port and the second opening 62 as a suction port. Further, by rotating the rotor 52 in the opposite direction for maintenance or the like, the first opening 60 functions as a suction port and the second opening 62 functions as a discharge port, and the internal space of the casing 50 or the like is cleaned. be able to.

The stator 54 is a member having a substantially cylindrical appearance shape formed of an elastic body such as rubber or a resin or the like. The inner peripheral wall 66 of the stator 54 has n + 1 threads (n is a natural number) and has a single-stage or multi-stage female screw shape. In the present embodiment, the stator 54 has two rows and has a multi-stage female screw shape. Further, the through hole 68 of the stator 54 is formed so that the cross-sectional shape (opening shape) thereof is substantially oval when viewed in cross section at any position in the longitudinal direction of the stator 54.

The rotor 52 is a metal shaft body, and has an n-row single-stage or multi-stage male screw shape. In the present embodiment, the rotor 52 has a male screw shape eccentric with one row. The rotor 52 is formed so that its cross-sectional shape is substantially a perfect circle when viewed in cross section at any position in the longitudinal direction. The rotor 52 is inserted into the through hole 68 formed in the stator 54 described above, and is freely eccentrically rotatable inside the through hole 68.

When the rotor 52 is inserted through the stator 54, the outer peripheral surface 70 of the rotor 52 and the inner peripheral surface 66 of the stator 54 are in close contact with each other at the tangent line between the rotor 52, and the inner peripheral surface 66 of the stator 54 and the outer peripheral surface of the rotor 52 are brought into close contact with each other. A fluid transport path 72 (cavity) is formed between the 70 and the 70. The fluid transport path 72 spirally extends in the longitudinal direction of the stator 54 and the rotor 52.

When the rotor 52 is rotated in the through hole 68 of the stator 54, the fluid transport path 72 advances in the longitudinal direction of the stator 54 while rotating in the stator 54. Therefore, when the rotor 52 is rotated, the fluid is sucked into the fluid transport path 72 from one end side of the stator 54, and the fluid is transferred toward the other end side of the stator 54 in a state of being confined in the fluid transport path 72. , It is possible to discharge at the other end side of the stator 54.

The power transmission mechanism 56 is for transmitting power from the drive unit 74 to the rotor 52 described above. The power transmission mechanism 56 has a power transmission unit 76 and a connection unit 78. The power transmission unit 76 is provided on one end side of the casing 50 in the longitudinal direction. Further, the connecting portion 78 is provided in the intermediate portion. The connecting portion 78 is a portion that connects the power transmission unit 76 and the rotor 52 so that power can be transmitted. As a result, the rotor 52 can rotate eccentrically so as to revolve along the inner peripheral surface of the stator 54 while rotating on the inside of the stator 54. The connecting portion 78 is composed of a conventionally known universal joint, a coupling rod, a screw rod, or the like. Therefore, the connection unit 78 can transmit the rotational power generated by operating the drive unit 74 to the rotor 52 to rotate the rotor 52 eccentrically.

The mixing unit 40 mixes and discharges the fluids supplied from the

discharge devices

20 and 20. The mixing unit 40 includes a mixer unit 42. The mixer unit 42 is composed of, for example, a static mixer, a dynamic mixer provided with a drive screw that operates by receiving power from a drive source such as a motor, or the like. In the present embodiment, the mixer unit 42 is composed of a static mixer.

≪About the air discharge part 100 and the structure related to it≫
The discharge device 20 described above includes an air discharge unit 100 for discharging air that has flowed in together with a fluid from the outside. Hereinafter, the air discharge unit 100 and the configuration related thereto will be described in detail with reference to the drawings.

As shown in FIGS. 2 and 3, the air discharge unit 100 is provided in a portion of the casing 50 of the discharge device 20 in which the power transmission mechanism 56 is housed. Specifically, the casing 50 has a first casing portion 50a, a second casing portion 50b, a third casing portion 50c, and a fourth casing portion 50d. Further, the casing 50 has a first sealing support member 102 between the first casing portion 50a and the second casing portion 50b, and a second sealing between the second casing portion 50b and the third casing portion 50c. It has a support member 104.

The first casing portion 50a and the second casing portion 50b are portions in which the power transmission mechanism 56 and the drive portion 74 are housed, respectively. The third casing portion 50c is a portion provided between the first casing portion 50a and the second casing portion 50b. Further, the fourth casing portion 50d is a portion in which the pump mechanism 55 including the rotor 52 and the stator 54 is housed. The air discharge portion 100 is provided in a portion forming the first casing portion 50a among these portions constituting the casing 50.

Inside the first casing portion 50a, a fluid storage portion 110 for accommodating a fluid supplied from the outside is provided. The fluid accommodating portion 110 communicates with the fourth casing portion 50d in which the pump mechanism 55 is accommodated, and the fluid supplied to the first casing portion 50a can be supplied to the fluid transport path 72. Further, a connecting portion 78 (internal member) is arranged inside the fluid accommodating portion 110. The connecting portion 78 is a columnar one arranged at a substantially axial center position of the fluid accommodating portion 110, and is arranged so as to extend in the axial direction.

Further, in the first casing portion 50a, the end portion on the third casing portion 50c side is sealed by the first sealing support member 102 and the sealing member 106. Specifically, the first sealing support member 102 is a member formed in a ring shape. The first sealing support member 102 is fitted into the fitting portion 120 formed by counterboring the portions in contact with each other in the first casing portion 50a and the third casing portion 50c. Further, the seal member 106 is fitted into an opening provided at the axial position of the first sealing support member 102. A shaft-shaped power transmission unit 76 is inserted into the seal member 106. As a result, the power transmission portion 76 is rotatably supported on one end side, and the first casing portion 50a is closed at the end portion on the third casing portion 50c side. The power transmission unit 76 is rotatable on the other end side (drive unit 74 side) by the second sealing support member 104 and the seal member 107 provided between the second casing portion 50b and the third casing portion 50c. Is supported by.

As shown in FIG. 5 and the like, a fluid introduction portion 108 is provided on the peripheral portion of the first casing portion 50a. The fluid introduction unit 108 has a fluid introduction port 108a that communicates with the inside and outside of the fluid storage unit 110. As a result, the fluid can be introduced into the fluid accommodating portion 110 via the fluid introducing portion 108.

The air discharge unit 100 is a portion that discharges air from the inside of the fluid accommodating unit 110 to the outside. The air discharge portion 100 is formed by separably combining the first sealing support member 102 with the first casing portion 50a. Specifically, the air discharge unit 100 has an air discharge path 130 that communicates with the fluid accommodating unit 110. The air discharge path 130 is formed in the first casing portion 50a described above by using the groove 126 formed on the bottom surface 124 of the first counterbore portion 122 constituting the fitting portion 120 and the first sealing support member 102. Has been done.

As shown in FIG. 5 and the like, the groove 126 is formed in a gutter shape, and has a shape open to the outside in the intermediate portion thereof. The air discharge path 130 constitutes a circumferential discharge path 132 through which air can pass by closing the open portion of the groove 126 by the first sealing support member 102 fitted in the fitting portion 120 (FIG. 4). Etc.). Further, as shown in FIG. 5, the circumferential discharge path 132 can open the groove 126 to the outside by removing the first sealing support member 102. The circumferential discharge path 132 is formed so as to extend in the circumferential direction of the fluid accommodating portion 110. In the present embodiment, the circumferential discharge path 132 extends in the circumferential direction of the fluid accommodating portion 110 so as to form an arc having a central angle of about 90 degrees. Further, the air discharge path 130 is a circumferential discharge path via an air discharge portion inlet 134 communicating with one end side of the circumferential discharge path 132 and an axial discharge path 136 communicating with the other end side of the circumferential discharge path 132. It has an air discharge outlet 138 that communicates with 132.

The air discharge section inlet 134 is an opening communicating with the fluid storage section 110 on one end side of the circumferential discharge path 132. The air discharge portion inlet 134 is opened on the opposite side to the fluid fluid introduction portion 108 via a columnar connecting portion 78 provided inside the fluid storage portion 110. That is, the air discharge section inlet 134 is provided at a position facing the fluid introduction section 108 in the circumferential direction. Further, the air discharge unit inlet 134 is provided at a position (opposite side to the pump mechanism 55 / drive unit 74 side) on the upper side in the gravity direction when the fluid is discharged from the fluid introduction unit 108.

The axial discharge path 136 is a passage communicating with the other end side of the circumferential discharge path 132. The axial discharge path 136 is formed by providing a hole extending in the axial direction with respect to the first casing portion 50a on the other end side of the circumferential discharge path 132.

The air discharge portion outlet 138 is composed of an opening formed so as to communicate with the terminal portion of the axial discharge path 136. The air discharge portion outlet 138 is formed by providing a hole extending in a direction intersecting the axial direction with respect to the first casing portion 50a (in the present embodiment, a direction substantially orthogonal to each other / a radial direction of the fluid accommodating portion 110). Has been done. A female screw is formed on the inner peripheral surface of the air discharge portion outlet 138. As a result, the sealing member 140 having a screw shaft having a male screw on the outer peripheral portion can be attached to and detached from the air discharge portion outlet 138, and the air discharge portion outlet 138 can be opened and closed.

The air discharge unit outlet 138 is provided at a position on the other end side of the circumferential discharge path 132 having the air discharge unit inlet 134 on one end side. Therefore, the air discharge unit outlet 138 is located at a position deviated from the air discharge unit inlet 134 in the circumferential direction of the fluid accommodating unit 110. Further, the air discharge portion outlet 138 is provided on the other end side of the circumferential discharge passage 132 so as to communicate with the terminal portion of the axial discharge passage 136 formed in the axial direction of the fluid accommodating portion 110. Therefore, the air discharge unit outlet 138 is located at a position deviated from the air discharge unit inlet 134 in the axial direction.

In the air discharge passage 130, the inflow direction of the air entering the air discharge unit 100 from the fluid accommodating unit 110 via the air discharge unit inlet 134 and the discharge direction of the air discharged from the air discharge unit outlet 138 are twisted. Each part is configured to be related. Further, the direction in which air is introduced together with the fluid from the fluid introduction unit 108 to the fluid storage unit 110 and the direction in which air discharged from the air discharge unit outlet 138 is discharged are in a twisted relationship. Each part is composed.

<< Arrangement of the discharge device 20 in the discharge system 10 >>
As described above, the discharge system 10 includes a discharge device 20 for the first system 12 (hereinafter, also referred to as “discharge device 20A”) and a discharge device 20 for the second system 14 (hereinafter, also referred to as “discharge device 20B”). It is equipped with (referred to as). As described above, the discharge device 20 is located at a position where the fluid introduction unit 108 and the air discharge unit outlet 138 are separated from each other in the circumferential direction (positions separated by approximately 90 degrees in this embodiment).

Therefore, as shown in FIG. 1, in the discharge system 10, the air

discharge parts outlets

138 and 138 of the

discharge devices

20A and 20B face the front side, and the fluid introduction part 108 of the discharge device 20A on the left side in the front view. Is arranged so that the fluid introduction portion 108 of the discharge device 20B on the left side and the right side of the discharge system 10 faces the right side of the discharge system 10. As a result, while minimizing the interval between the

discharge devices

20A and 20B, the introduction of the fluid into the

discharge devices

20A and 20B and the air bleeding work can be performed without removing the

discharge devices

20A and 20B from the discharge system 10.

<< About the work process of air bleeding work in the discharge device 20 >>
The air bleeding operation when introducing the fluid into the discharge device 20 can be performed by, for example, the following procedure. Specifically, in the discharge device 20, the fluid tank, the supply pump, etc. are provided by the flow path connected to the fluid introduction unit 108 in a state where the fluid accommodating portion 110 formed in the casing 50 is empty. Connected to a fluid source equipped with. When performing the air bleeding work, the air discharge path 130 is opened to the atmosphere by removing the sealing member 140 attached to the air discharge unit outlet 138. When the fluid is introduced from the fluid introduction portion 108 in this state, the fluid flows in so as to wrap around the columnar connecting portion 78 arranged inside the fluid accommodating portion 110. As a result, the fluid accommodating portion 110 is filled with the fluid.

In the process of introducing the fluid into the fluid accommodating portion 110 as described above, the air that has flowed into the fluid accommodating portion 110 together with the fluid wraps around the connecting portion 78 and is on the opposite side of the fluid accommodating portion 108. It flows into the air discharge path 130 through a certain air discharge portion inlet 134. The air that has flowed into the air discharge path 130 reaches the air discharge section outlet 138 via the circumferential discharge path 132 and the axial discharge path 136, and is discharged to the outside of the fluid accommodating section 110. In the present embodiment, the air discharge portion inlet 134 is on the opposite side of the shaft forming the connection portion 78 with respect to the fluid introduction portion 108, and is near the uppermost portion of the fluid storage portion 110 in the gravity direction (first sealing). Since it is located substantially directly below the support member 102), air cannot be accumulated in the fluid accommodating portion 110, and the entire fluid accommodating portion 110 is filled with the fluid. Further, in the fourth casing portion 50d communicating with the first casing portion 50a in which the fluid accommodating portion 110 is formed, the rotor 52 and the stator 54 forming the pump mechanism 55 are sealed by a seal wire formed in close contact with each other. It has been stopped. Therefore, in the discharge device 20, air does not flow in and out on the pump mechanism 55 side.

When the air is sufficiently released from the fluid accommodating portion 110 as described above, the sealing member 140 is attached to the air discharging portion outlet 138 to seal the air discharging path 130. After that, the discharge device 20 is operated, and the fluid transport path 72 (cavity) formed in the stator 54 is also filled with the fluid. Further, if necessary, the fluid is discharged (discarded) from the fluid transport path 72. As a result, the air bleeding work in the discharge device 20 is completed, and the fluid is ready to be discharged.

According to the discharge device 20 according to the above-described embodiment and the discharge system 10 using the discharge device 20, the following effects (1) to (8) can be obtained.

(1) The discharge device 20 of the present embodiment has a fluid inlet 108a provided so as to communicate with the fluid accommodating portion 110, and an air discharge portion inlet 134. Further, the air discharge portion inlet 134 is provided on the opposite side to the fluid fluid introduction port 108a via the connection portion 78 arranged inside the fluid storage portion 110. Therefore, when air flows into the fluid accommodating portion 110 together with the fluid from the fluid introduction port 108a, the air is discharged from the fluid accommodating portion 110 through the air discharging portion inlet 134 on the opposite side of the connecting portion 78. Will be done. Since the discharge device 20 of the present embodiment has such a configuration, the air that has flowed into the fluid accommodating unit 110 can be sufficiently discharged through the air discharge unit inlet 134.

(2) The discharge device 20 of the present embodiment includes an air discharge path 130 in which the air discharge unit 100 serves as a passage for air discharged through the air discharge unit inlet 134. Further, the air discharge passage 130 communicates with the outside of the fluid storage unit 110 at a position deviated from the air discharge unit inlet 134 in either one or both of the circumferential direction and the axial direction of the fluid storage unit 110. It has a discharge outlet 138. Therefore, in the discharge device 20 of the present embodiment, the air discharge unit outlet 138 is not restricted to the position of the air discharge unit inlet 134, and the fluid accommodating unit 110 is in the circumferential direction and the axial direction with respect to the air discharge unit inlet 134. It can be provided at a position that is different from either one or both of the above.

(3) In the discharge device 20 of the present embodiment, the connecting portion 78 is formed as an internal member arranged inside the fluid accommodating portion 110 in an axial shape extending in the axial direction of the fluid accommodating portion 110. With such a configuration, the air flowing into the fluid accommodating portion 110 wraps around the outer periphery of the connecting portion 78 arranged so as to extend in the axial direction at the axial position of the fluid accommodating portion 110. Then, it can be moved so as to reach the air discharge portion inlet 134 provided on the opposite side of the fluid introduction port 108a, and can be sufficiently discharged.

In the present embodiment, an example in which the connecting portion 78 is used as an internal member is shown, but the present invention is not limited to this, and various members arranged inside the fluid accommodating portion 110 are used as internal members. Can be done.

(4) The discharge device 20 of the present embodiment is provided at a position where the air discharge unit inlet 134 is on the upper side in the direction of gravity when discharging the fluid with respect to the fluid introduction port 108a. As a result, the discharge device 20 can more reliably discharge the air that has flowed into the fluid storage unit 110 to the outside of the fluid storage unit 110. In the present embodiment, an example is shown in which the air discharge portion inlet 134 is provided at a position on the upper side in the gravity direction with respect to the fluid introduction port 108a, but the present invention is not limited to this. For example, when a sufficient effect can be achieved such that the air discharge portion inlet 134 does not have to be on the upper side in the gravity direction with respect to the fluid introduction port 108a to sufficiently bleed the air, or when other effects are prioritized. May have the air discharge portion inlet 134 at the same position in the gravity direction as the fluid introduction port 108a, or may be on the lower side in the gravity direction.

(5) The discharge device 20 described above has an inflow direction of air entering the air discharge unit 100 from the fluid accommodating unit 110 via the air discharge unit inlet 134 and an discharge direction of air discharged from the air discharge unit outlet 138. However, there is a twisting relationship. As a result, the discharge device 20 can discharge the air that has entered the fluid storage unit 110 from the fluid introduction unit 108 in a direction different from the position opposite to the fluid introduction unit 108.

In the present embodiment, the inflow direction of the air entering the air discharge part 100 from the fluid accommodating part 110 and the discharge direction of the air discharged from the air discharge part outlet 138 are in a twisted relationship. Although an example of the device 20 has been shown, the same effect can be expected even if the configuration of the discharge device 20 is changed so that both directions intersect.

(6) In the discharge device 20 of the present embodiment described above, at least a part of the air discharge unit 100 is a separable combination of a plurality of constituent members, and the constituent members constituting the air discharge unit 100. The air discharge path 130 is opened by separating a part or all of the components from the other components. Specifically, the air discharge portion 100 is formed by separably combining the first sealing support member 102 with the first casing portion 50a. As a result, the discharge device 20 separates the first sealing support member 102 from the first casing portion 50a to open the air discharge path 130, and cleans the inside of the air discharge path 130 and performs maintenance. Can be done.

In the present embodiment, the discharge device 20 in which the air discharge path 130 can be opened by separating a part or all of the constituent members constituting the air discharge portion 100 from the other constituent members has been illustrated. The present invention is not limited to this. When the air discharge path 130 can be cleaned or maintained by another means, or when disassembly and cleaning need not be considered, the configuration may not necessarily be disassembled as described above.

Further, in the present embodiment, an arcuate groove 126 is provided in the first counterbore portion 122 of the first casing portion 50a, and the groove 126 is opened by the first sealing support member 102 fitted in the first counterbore portion 122. Although an example in which the circumferential discharge path 132 through which air can pass is configured by closing the portion, the present invention is not limited to this. For example, as shown in FIGS. 6 and 7, the first counterbore portion 122 of the first casing portion 50a has an arcuate depression 150 not only on the top surface side but also on the fluid accommodating portion 110 side instead of the groove 126. The first sealing support member 102 is provided with an arcuate wall 152 on the side of the first sealing support member 102, and the first sealing support member 102 is fitted into the first counterbore portion 122 to form a groove 126 between the two. The corresponding gap 154 may be formed. Even in the case of such a configuration, the same effect as that of the above embodiment can be obtained.

(7) In the discharge device 20 of the present embodiment described above, the drive unit 74, the rotor 52 formed of the male screw type shaft body, and the rotor 52 can be inserted, and the inner peripheral surface is formed in a female screw type. A connection between the stator 54 and the rotor 52 that connects the drive unit 74 and the rotor 52 so that the rotor 52 can rotate eccentrically so as to revolve along the inner peripheral surface of the stator 54 while rotating on the inside of the stator 54. It has a portion 78, and the connecting portion 78 is arranged inside the fluid accommodating portion 110 as an internal member. As a result, the discharge device 20 can sufficiently bleed air in the fluid accommodating unit 110 and introduce the fluid regardless of the presence of the connecting unit 78 for connecting the drive unit 74 and the rotor 52 so as to be able to transmit power. It is possible to have a high degree of freedom in the positional relationship between the port 108a and the air discharge unit 100. In the present embodiment, an example in which the discharge device 20 is a uniaxial eccentric screw pump is shown, but the present invention is not limited to this, and other types, for example, as will be described in detail later as a modified example, of other types. It may be used as a discharge device.

(8) In the discharge system 10 described above, the two

discharge devices

20 and 20 are arranged so that the casing 50 is close to each other, and the fluid introduction section 108 and the air discharge section 100 of each discharge device 20 are close to each other. It is assumed that the discharge device 20 is arranged at a position away from the casing 50 of the discharge device 20. As a result, the discharge system 10 does not need to adjust the interval between the plurality of discharge devices 20 in consideration of the presence of the fluid introduction port 108a and the air discharge unit 100, and the casings 50 of each discharge device 20 are separated by that amount. It can be arranged so that it is sufficiently close to each other. Therefore, the discharge system 10 described above can sufficiently bleed air and has a compact structure.

In the present embodiment, an example in which the discharge system 10 is constructed by using the two

discharge devices

20 and 20 is illustrated, but the present invention is not limited to this, and a larger number of discharge devices 20 are provided. You may. Further, in the present embodiment, a discharge system 10 in which a fluid such as a two-component adhesive is mixed and discharged is exemplified, but the present invention is not limited to this. For example, the discharge system 10 may not include the mixing unit 40 and may be capable of individually discharging the fluid from each discharge device 20. Further, in the present embodiment, an example in which the discharge device 20 is used for the discharge system 10 is shown, but the present invention is not limited to this, and the discharge device 20 may be used alone.

≪First modification example≫
In the above embodiment, an example in which the air discharge unit 100 is provided in the discharge device 20 including the uniaxial eccentric screw pump is shown, but the present invention is not limited to this. For example, as in the discharge device 220 shown in FIG. 8, in the needle valve type discharge device, an air discharge unit 260 having the same configuration as the air discharge unit 100 of the discharge device 20 may be provided. Hereinafter, the configuration of the discharge device 220 will be described. In the following description, the same reference numerals will be given to the configurations common to the above embodiments, and detailed description thereof will be omitted.

The discharge device 220 has a casing 230, a needle 240, an actuator 250, and an air discharge unit 260. In the discharge device 220, the casing 230 corresponds to the casing 50 of the above embodiment. In the illustrated state, a discharge port 232 is provided at a position on the lower end side of the casing 230 and communicates with the outside. Further, a top surface portion 230a is provided on the upper end side of the casing 230. As a result, a fluid accommodating portion 234 capable of accommodating the fluid is formed inside. Further, a fluid introduction section 236 corresponding to the fluid introduction section 108 of the above embodiment is provided on the outer peripheral portion of the casing 230. The fluid introduction section 236 communicates with the fluid accommodating section 234 on the upper end side of the casing 230.

The needle 240 is capable of advancing and retreating in the axial direction via an insertion hole 230b provided in the top surface portion 230a of the casing 230. The discharge device 220 can close the discharge port 232 by inserting the tip of the needle 240 into the discharge port 232. Further, the discharge device 220 can open the discharge port 232 by pulling out the tip of the needle 240 from the discharge port 232. The needle 240 is an internal member arranged so as to extend in the axial direction in the fluid accommodating portion 234.

The actuator 250 is arranged on the base end side of the needle 240 (upper side of the top surface portion 230a in the illustrated state). The actuator 250 is connected to the needle 240 and can move the needle 240 forward and backward in the axial direction.

The air discharge unit 260 corresponds to the air discharge unit 100 of the above embodiment. The air discharge unit 260 is said to have a passage corresponding to the above-mentioned air discharge path 130 provided in the casing 230. Specifically, the air discharge unit 260 has an air discharge passage 266 having an air discharge unit inlet 262 on one end side and an air discharge unit outlet 264 on the other end side. The air discharge unit inlet 262 and the air discharge unit outlet 264 correspond to the above-mentioned air discharge unit inlet 134 and air discharge unit outlet 138, respectively.

The air discharge section inlet 262 is open so as to communicate with the fluid storage section 234. In this modification, the air discharge portion inlet 262 is opened on the opposite side of the fluid introduction portion 236 via the needle 240, which is an internal member. That is, the air discharge portion inlet 262 is located at a position deviated from the fluid introduction portion 236 in the circumferential direction of the fluid accommodating portion 234. Further, the air discharge portion inlet 262 is located at a position deviated from the fluid introduction portion 236 in the axial direction of the fluid accommodating portion 234 (in this modified example, above the fluid introduction portion 236).

Further, the air discharge part outlet 264 is opened so as to communicate with the outside of the fluid storage part 234 (casing 230). The air discharge section outlet 264 is provided at a position separated from the fluid introduction section 236 on the lower side in the axial direction. The air discharge portion outlet 264 can be opened and closed by attaching / detaching a sealing member 272 similar to the sealing member 140.

The air discharge path 266 is formed in the casing 230 so as to connect the above-mentioned air discharge section inlet 262 and the air discharge section outlet 264. In the illustrated example, the air discharge passage 266 has an axial discharge passage 268 extending in the axial direction from the air discharge portion inlet 262 and a fluid accommodating portion 234 so as to reach the air discharge portion outlet 264 from the terminal portion of the axial discharge passage 268. It has a circumferential discharge path 270 formed so as to extend in the circumferential direction of (casing 230).

By configuring the discharge device 220 of this modified example, the same effects as in (1) to (6) of the discharge device 20 of the above-described embodiment can be obtained. Further, as shown in FIG. 9, by constructing a discharge system 210 in which a plurality of discharge devices 220 (four in the illustrated example) are arranged side by side, it is possible to discharge fluid from each discharge device 220 to the work W. be able to. According to such a discharge system 210, the same action and effect as in (8) for the discharge system 10 of the above embodiment can be obtained.

Although the present modification shows an example in which the discharge device 220 is a needle valve type discharge device, the present invention is not limited to this. For example, in a jet type dispenser, a piston type dispenser, or the like, the same configuration as that of the discharge device 220 can be adopted.

≪Second modification≫
In the first modification described above, the needle valve type discharge device 220 has been exemplified, but the present invention is not limited thereto. For example, the screw type discharge device 320 shown in FIG. 10 may be used. Hereinafter, the configuration of the discharge device 320 will be described. In the following description, the same reference numerals are given to the configurations common to the above-described embodiment and the above-mentioned first modification, and detailed description thereof will be omitted.

The discharge device 320 has a casing 330, a screw 340, a motor 350, and an air discharge unit 360. In the discharge device 320, the casing 330 corresponds to the casing 50 of the above embodiment and the casing 230 of the first modification. In the illustrated state, a discharge port 332 is provided at a position on the lower end side of the casing 330 and communicates with the outside. Further, a top surface portion 330a is provided on the upper end side of the casing 330. As a result, a fluid accommodating portion 334 capable of accommodating the fluid is formed inside. Further, a fluid introduction portion 336 similar to the fluid introduction portion 236 of the first modification is provided on the outer peripheral portion of the casing 330, and communicates with the fluid accommodating portion 334.

The screw 340 is said to be provided with a rotary blade 344 for a rotary shaft 342 extending in the vertical direction. The rotating shaft 342 is connected to the motor 350 via an insertion hole 330b provided in the top surface portion 330a of the casing 330. The screw 340 is an internal member arranged so as to extend in the axial direction in the fluid accommodating portion 334.

The air discharge unit 360 corresponds to the air discharge unit 100 of the above embodiment and the air discharge unit 260 of the first modification. The air discharge unit 360 is assumed to have a passage corresponding to the above-mentioned

air discharge passages

130 and 266 provided in the casing 330. Specifically, the air discharge unit 360 has an air discharge path 366 having an air discharge unit inlet 362 on one end side and an air discharge unit outlet 364 on the other end side.

The air discharge section inlet 362 is open so as to communicate with the fluid storage section 334. In this modification, the air discharge portion inlet 362 is opened on the opposite side of the fluid introduction portion 336 via the screw 340 which is an internal member. The air discharge unit inlet 362 is located at a position deviated from the fluid introduction unit 336 in the circumferential direction and the axial direction of the fluid storage unit 334.

Further, the air discharge part outlet 364 is opened so as to communicate with the outside of the fluid storage part 334 (casing 330). The air discharge section outlet 364 is provided at a position separated from the fluid introduction section 336 on the upper side in the axial direction. The air discharge portion outlet 364 can be opened and closed by attaching / detaching a sealing member 372 similar to the sealing member 140.

The air discharge path 366 is formed in the casing 330 so as to connect the above-mentioned air discharge section inlet 362 and the air discharge section outlet 364.

By configuring the discharge device 320 of this modification, the same effects as in (1) to (6) of the discharge device 20 of the above-described embodiment can be obtained. Further, by arranging a plurality of discharge devices 320, the effect of the above (8) can be obtained as in the discharge system 10 of the above embodiment and the discharge system 210 of the first modification.

The present invention is not limited to those shown as the above-described embodiments, modifications, etc., and there may be other embodiments from the teaching and spirit within the scope of the claims. The components of the above-described embodiment may be arbitrarily selected and combined. Further, any component of the embodiment and any component described in the means for solving the invention or a component embodying any component described in the means for solving the invention are arbitrarily combined. May be configured. We also intend to acquire the rights to these in the amendment or divisional application of the present application.

INDUSTRIAL APPLICABILITY The present invention can be suitably used in a general multi-liquid mixed discharge device that discharges a fluid that is required to mix and discharge a plurality of fluids, such as a two-component adhesive composed of a main agent and a curing agent. Is.

10: Discharge system 20: Discharge device 50: Casing 52: Rotor 54: Stator 74: Drive unit 76: Power transmission unit 78: Connection unit (internal member)
100: Air discharge part 108: Fluid introduction part 108a: Fluid introduction port 110: Fluid storage part 130: Air discharge path 134: Air discharge part inlet 138: Air discharge part outlet 210: Discharge system 220: Discharge device 230: Casing 234: Fluid accommodating unit 236: Fluid introduction unit 240: Needle (internal member)
260: Air discharge part 262: Air discharge part inlet 264: Air discharge part outlet 266: Air discharge path 320: Discharge device 330: Casing 334: Fluid accommodating part 336: Fluid introduction part 340: Screw (internal member)
360: Air discharge part 362: Air discharge part inlet 364: Air discharge part outlet 366: Air discharge path

Claims

It is a discharge device capable of discharging the fluid introduced into the fluid accommodating portion provided inside the casing.
A fluid introduction section that introduces a fluid into the fluid accommodating section, and a fluid introduction section.
An internal member arranged inside the fluid accommodating portion and
It has an air discharge part that discharges air from the inside of the fluid accommodating part to the outside.
The fluid introduction unit has a fluid introduction port communicating with the inside of the fluid storage unit.
The air discharge section has an air discharge path communicating with the fluid accommodating section.
The air discharge passage communicates with the fluid accommodating portion on the opposite side of the fluid introduction port via the internal member, and the fluid accommodating portion with respect to the air discharge accommodating portion inlet. A discharge device having an air discharge unit outlet communicating with the outside of the fluid accommodating unit at a position deviated from one or both of the circumferential direction and the axial direction.
The discharge device according to claim 1, wherein the internal member has an axial shape extending in the axial direction inside the fluid accommodating portion.
The discharge device according to claim 1 or 2, wherein the air discharge unit inlet is provided at a position on the upper side in the direction of gravity when discharging the fluid with respect to the fluid introduction port.
The inflow direction of the air entering the air discharge part from the fluid accommodating part through the air discharge part inlet and the discharge direction of the air discharged from the air discharge part outlet are in a crossing or twisting relationship. The discharge device according to any one of claims 1 to 3, wherein the discharge device is characterized by.
At least a part of the air discharging part is a combination of a plurality of constituent members in a separable manner.
Any one of claims 1 to 4, wherein the air discharge path is opened by separating a part or all of the constituent members constituting the air discharge portion from other constituent members. Discharge device according to.
Drive unit and
A rotor composed of a male screw type shaft body and
A stator through which the rotor can be inserted and whose inner peripheral surface is formed in a female thread shape,
A connecting portion that connects the drive unit and the rotor so that the rotor can rotate eccentrically so as to revolve along the inner peripheral surface of the stator while rotating on the inside of the stator. Have and
The discharge device according to any one of claims 1 to 5, wherein the connecting portion is arranged inside the fluid accommodating portion as the internal member.
A plurality of discharge devices according to any one of claims 1 to 6 are arranged so that the casings are close to each other.
A discharge system characterized in that the fluid introduction portion and the air discharge portion of each discharge device are arranged at positions separated from the casings of other discharge devices in the vicinity.