JPH0392600A - Vane pump - Google Patents

Abstract

PURPOSE:To get reversible through flow keeping a rotor rotating in the same direction by providing a change-over valve which alternately stops a flow between respective fluid passages and an inside of a casing, and also by providing two check valves in the respective fluid passages, which close one passage toward a common pipe but, at the same time, open another passage toward the common pipe owing to fluid pressure. CONSTITUTION:In the case where a change-over valve 10 closes a lower opening 7a of a fluid passage A, fluid flowing within a casing 1 in the direction of arrows is discharged to a fluid passage B through a lower opening 7b which is opened owing to the rotation of a rotor 2, and then is discharged to a fluid passage B by lifting up a check valve 11b and closing a communicating port 4b therewith. On the other hand, fluid flowed into the fluid passage A pushes a check valve 11a down, and then flows into a common passage C through a communicating port 4a, and after that, flows into a central portion of the rotor 2 in the casing 1. Then, the fluid flows again in the direction of arrows owing to centrifugal force and proceeds along the same route as mentioned above. In the case where a change-over valve 10 closes a lower opening 7b of the fluid passage B, the fluid flows backwards owing to the action of the check valves 11a and 11b from the fluid passage B toward the fluid passage A via the common passage C and the inside of the casing 1 as shown with arrows.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a bowl bomb that allows reversible mass flow of fluid.

[Conventional technology]

In order to enable reversible flow of fluid, the applicant has invented the Hoenbomb, which is disclosed in Japanese Patent Application Laid-open No. 174586/1986. The vane pump according to this invention is
A plurality of vanes are protruded from the circumferential surface of a reversibly rotatable rotor arranged in a substantially circular casing at intervals corresponding to the rotational direction of the rotor so as to be freely rotatable within the plane of the rotational direction of the rotor, A locking means, such as an adjustment bolt, is provided at the front and back positions of each vane in the rotational direction to hold the vane at a predetermined inclination with respect to the radial direction of the rotor, so that the rotor can be rotated in the normal or reverse direction. By doing so, the suction side and discharge side of the fluid can be alternately switched. [Problems to be Solved by the Invention] However, the above-mentioned hem bomb according to the invention of the applicant has a plurality of concave grooves formed at appropriate intervals on the circumferential surface of the rotor in order to enable the rotor to rotate reversibly. The base of each vane is positioned on a line connecting the concave groove and the center of the rotor so that each vane can rotate freely within the plane of the rotational direction of the rotor, and each vane is pivoted to the rotor. They are provided protruding from the concave grooves in the radial direction of the rotor, and adjustment bolts are hinged to the inner surface of each concave groove so that they can move forward and backward, and the inclination of each vane can be adjusted by the amount of protrusion of each Aj1 section bolt. Because of this, the structure of the rotor itself is complex and difficult to manufacture, and it takes time and effort to adjust the inclination of the many vanes, and the adjustment bolts often fall off during operation, which can lead to malfunctions. There were issues such as a high rate of SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a basin pump that solves all of these problems. [Means for Solving the Problems] In order to achieve the above object, the vane bomb of the present invention has a rotor, which has a large number of vanes fixedly installed at appropriate intervals in the rotational direction, which is pivotally supported in a casing, and a part of the casing. A pair of fluid pipes communicating with the inside of the casing is provided on the side wall, and a common pipe is provided with one end communicating with both fluid pipes and the other end communicating with the center of the rotor inside the casing. A switching valve is provided in each fluid pipeline that alternately forcibly cuts off the flow of fluid between the inside and outside, and each fluid pipeline is operated by the pressure of the fluid, and when fluid flows from inside the case song to the fluid pipeline side, a common pipe Each pipe is provided with a check valve that blocks the flow to the common pipe and opens the flow to the common pipe when the flow is blocked.

[Effect]

In the vane pump according to the present invention, first, when the switching valve 10 closes the lower end opening 7a of the fluid pipe 8 as shown in FIG. The fluid flows into the fluid conduit B from the open lower end opening 7b, and is sent out to the fluid conduit B while pushing up the check valve 1lb and blocking the communication port 4b. On the other hand, the fluid that has flowed into the fluid pipe A presses down the check valve 11a and flows into the common pipe C communicating through the communication port 4a, flows into the center of the rotor 2 in the casing 1, and is redirected by the centrifugal force. It flows in the indicated direction and follows the same path. In addition, when the switching valve IO closes the lower end opening 7b of the fluid pipe B as shown in FIG. 2, the fluid flowing in the direction of the arrow inside the casing l is allowed to flow through the open lower end opening 7b. The liquid flows into the fluid pipe A from A, pushes up the check valve 11a and closes the communication port 4a, and is sent to the fluid pipe A. On the other hand, the fluid that has flowed into the fluid conduit B pushes down the check valve 1lb, flows into the common conduit C communicating through the communication port 4b, flows into the center of the rotor 2, and follows the same path again. [Example] An example of the vane bomb according to the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a casing having a substantially circular shape, and 2 is a rotor that is disposed eccentrically within the casing 1 and is supported by a shaft. Fix the tube 3 so that it is tilted in a certain direction. These vanes 3 are arranged so that their tips approach the inner peripheral surface of the casing 1 on the eccentric side (the right side in the figure) where the rotor 2 comes closest, with almost no gaps. On the other hand, a pair of fluid pipes A and B communicating with the inside of the casing I are connected in a protruding manner to the wall surface of the casing I at a position relatively distant from the rotor 2. Furthermore, one end is connected to both fluid pipes A and B and the communication port 4a.
, 4b, and the other end is connected to the rotor 2 in the casing 1.
A common conduit C communicating with the center is provided. This common pipe C
protrudes forward from the surface of the casing l and is connected to the center of the rotor 2 in a detour manner. Each of the fluid pipes A. The lower end of B is a short valve cylinder body 5a,
5b to the casing l, and each valve cylinder body 5
The upper end openings 6a, 6b of the pipes a, 5b are provided so as to be substantially perpendicular to the communicating ports 4a, 4b on both sides of the common conduit C, and the lower end openings 7a, 7b are provided so as to be located on the same plane, respectively. A cylinder 8 is fixed to the outside of the casing 1, and a switching valve 10 is fixed to the tip of a rod 9, which always closes either the lower end opening 7a or 7b when the rod 9 moves back and forth. Also, one end is pivotally mounted in each of the fluid pipes AB, and rotates to open the communication port 4a of the common pipe C,
Check valves 11a and 1lb are respectively provided to close or open the upper end openings 6a and 6b of the valve cylinder bodies 5a and 5b. The vane pump of the present invention has the above-mentioned configuration.
As shown in the figure, the switching valve 10 is connected to the lower end opening 7a of the fluid pipe A.
In the closed state, the fluid flowing in the casing 1 in the direction of the arrow due to the rotation of the rotor 2 flows into the fluid conduit B from the open lower end opening 7b, pushes up the check valve 1lb, and closes the communication port 4b. It is sent to fluid pipe B while blocking it. On the other hand, the fluid that has flowed into the fluid pipe A pushes down the check valve 11a and flows into the common pipe C communicating through the communication port 4a, flows into the center of the rotor 2 inside the casing l, and is redirected by the centrifugal force. It flows in the indicated direction and follows the same path. In addition, as shown in FIG. 2, when the switching valve IO closes the lower end opening 7b of the fluid pipe B, the fluid flowing in the direction of the arrow in the casing l flows from the open lower end opening 7a to the fluid pipe A. , and pushes up the check valve 11a to open the communication port 4.
It is sent to fluid pipe 8 while blocking a. On the other hand, the fluid flowing into the fluid conduit B pushes down the check valve 1lb, flows into the common conduit C communicating through the communication port 4b, flows into the center of the rotor 2, and follows the same path again. Furthermore, the vane bomb shown in Fig. 3 has a check valve 11a1lb.
In order to reliably open and close the respective pipes, the connecting rod 12 is integrally connected to each check valve 6a, 5b by pivotally supporting both ends of the connecting rod 12. Although this connecting rod l2 is not necessarily required to operate the Hoehn bomb in a vertical position as in this embodiment, if it is provided, the opening and closing operations of the check valves 11a and 11b will be ensured.
However, it is always required when using the vane bomb horizontally.

FIG. 4 shows an example in which the vane bomb constructed in this manner is used in a fiber dyeing apparatus, in which the vane bomb is arranged vertically below the dye tank 13. Check valve 11a. 1lb is connected by a connecting rod l2 similar to that shown in Fig. 3. In the figure,
14 is a frame-shaped machine base that supports the vane bomb. Then, the dyeing rod 13 is installed on this machine stand 14. This dye tank 13 has a lid that can be airtightly sealed, and the branch base 15
The fiber material M is inserted into the porous tube 16 established on the upper surface and dyed with a dye solution. The dye liquor is supplied into the dye tank 13 via a supply pipe 17 connected to a dye liquor tank (not shown). 18 is a steam pipe that heats the dye liquor in the dye tank 13 to maintain it at a predetermined temperature. 19 is a drain pipe for discharging the dye liquor from the dye tank 13. 20 is a vacuum pump,
21 is a pressure pump, each of which is connected to the dyeing tank 13. 22 is a frequency 2 signal made of a known magnetron transmitter tube.
A microwave generator of 400 to 2,500 MHz is connected to the dye tank 13 via a wave pipe 23. 24 indicates a pressure gauge attached to the dye tank l3.

The upper end of one fluid pipe A of the vane bomb is connected to the bottom wall of the dye tank l3, and the upper end of the other fluid pipe B is connected to the branch base 15. When dyeing the fiber material M with this fiber dyeing device, the dye solution is transferred from the dyeing tank to the solution supply pipe 17.
is supplied to the dye tank 13 via the steam pipe l.
After heating the dye liquor in step 8, first, a motor (not shown) is operated to drive the vane bomb while fluid pipe 8 is closed and fluid pipe B is opened using the switching valve IO. Then, the dye liquor flowing in the rotational direction of the rotor 2 within the casing l is pushed out from the fluid pipe B and passes through the porous pipe 16 to the dye tank l.
3. It is sent inside and dyed. On the other hand, the dye liquor accumulated in the dye tank l3 flows from the fluid pipe A through the common pipe C to the center of the rotor 2 and performs the series of operations described in FIG. 1 above. After a certain period of time has elapsed, the cylinder 8 is actuated and the switching valve 10 is moved to the right to close the fluid pipe line B and open the fluid pipe line A, and the series of operations described in FIG. 2 is performed. The dye liquor is pushed out from the casing 1 into the fluid pipe A and sent to the dye tank 13. In this way, by reciprocating the switching valve 10 every predetermined period of time, the washing liquid is appropriately caused to flow forward and backward, and the fiber material M is evenly dyed from the outside and from the inside.

At this time, when the switching valve 10 closes the lower end opening 6a of the fluid pipe 8, the dye liquid flows into the fluid pipe B and the check valve 11
A is pushed up and goes up while blocking one communication port 4b of the common pipe C, and at the same time, the dye liquid flowing down the fluid pipe 8 pushes down the check valve 1lb and opens the other communication port 4a of the common pipe C. It quickly flows into common pipe C. Double check valve 1
If 1 a and 1 l b are connected by connecting rod I2,
The force of the dye liquid pushing down the check valve 4a is applied to the check valve 4b that closes the communication port 4b, and the check valve 4b is securely blocked, so that a part of the dye liquid rising in the fluid pipe B flows through the gap in the communication port 4b to the common pipe C. As a result, there is almost no loss in flow rate of the dye liquid. Furthermore, when the switching valve 10 closes the lower end opening 6b of the fluid pipe B, the flow direction of the dye liquid is changed and each of the check valves 11a. The operation of llb is reversed. After finishing dyeing for the required time, drain the dye solution in the dye tank 13 from the drain pipe 19,
If you dehydrate and dry with air using a 2L pressure bomb, and reduce the pressure inside dye tank 3 with suction from a vacuum bomb 20,
The water impregnated in the fiber material M causes low boiling and evaporates under reduced pressure, and if necessary, the microwave generator 22 is operated to introduce microwaves into the dye ffl3. By irradiating the woven fiber material M, the fiber material M is uniformly heated and dried. Above, one mode of use of the vane pump according to the present invention has been described in which it is used for textile dyeing, but it may be either a vertical type or a horizontal type, and the use of the vane pump of the present invention is not limited to this. For example, pharmaceutical manufacturing machinery, other chemical machinery, civil engineering machinery, water tanks, tanks, etc.
It goes without saying that it can be widely used in pools and other devices that reciprocate liquid flow as appropriate.

〔Effect of the invention〕

As described above, the vane pump of the present invention has a simpler structure than the conventional one, which makes it easier to manufacture and causes almost no failures during operation. In addition, while the rotor is rotating in one direction, the liquid flow can be switched between forward and reverse directions simply by reciprocating the switching valve, and if the two check valves are linked together by a connecting rod, the opening/closing operation of the valve can be changed. Do this reliably and there will be no loss in the amount of dye liquid discharged from the casing, which will naturally increase dyeing efficiency. Furthermore, in the fiber dyeing apparatus, since the vane bomb is vertically installed directly below the dyeing tank, it can be made more compact and requires less installation space.

Furthermore, it has many advantages, such as being able to be used in many fields other than textile dyeing equipment, and having a wide range of applications.

[Brief explanation of drawings]

The drawings are for explaining one embodiment of the present invention, and FIG. 1 is an explanatory diagram of the operation when fluid pipe A is closed, and FIG. 2 is an explanatory diagram of the operation when fluid pipe B is closed. FIG. 3 is a sectional view of an embodiment in which both check valves for opening and closing fluid pipes A and B are connected by a connecting rod, and FIG. 4 is a diagram showing the same in use.

Claims (1)

[Scope of Claims] 1. A rotor having a plurality of vanes fixed at appropriate intervals in the rotational direction is pivotally supported in a casing, and a pair of fluid pipes are provided on one side wall of the casing and communicate with the inside of the casing. At the same time, a common pipeline is provided, one end of which communicates with both fluid pipelines, and the other end of which communicates with the center of the rotor inside the casing, and the fluid flow between each fluid pipeline and the inside of the casing is alternately forced. A switching valve was installed in each fluid pipeline, which was operated by the pressure of the fluid, and when the fluid flowed from inside the casing to the fluid pipeline side, it blocked the flow to the common pipeline and the flow was also shut off. A vane pump characterized in that it is each equipped with a check valve that opens the flow to a common pipe. 2. Claim 1, characterized in that both check valves are integrally connected by pivotally supporting both ends of the connecting rod to the check valves provided in each fluid pipe. Vane pump as described.