JP2002122252A - Flow regulating valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an effect of a solidified object in a flow regulating valve and to reduce maintenance cost. SOLUTION: A pipe main body 21 is elastically deformed by changing a position of a blocking member 19 so that the fluid having a flow rate corresponding to a position of the blocking member 19 is made to flow in the pipe main body 21. In this case, since a storage casing 16 in which a spindle part 18, which is a slide part of the flow regulating valve 10, or the blocking member 19 or a projecting part 15 for blocking a flow passage is provided, does not come into direct contact with liquid, gas vaporizated from the liquid or gas contained in liquid, the movement of the flow regulating valve 10 is not prevented due to solidification of a component contained in the liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow control valve, and more particularly, to a flow control valve for controlling a flow rate of a fluid containing a substance which easily solidifies.

[0002]

2. Description of the Related Art FIG. 13 shows a sectional view and a perspective view of a conventional flow control valve. In the conventional flow control valve 100, when adjusting the flow rate of the fluid, the handle 1
By rotating 01, the rotating shaft 102 is rotated. As a result, the closing plate 103 is inserted into the flow path 105 communicating with the pipe 104 by the tap portion formed on the rotating shaft 102 and the closing plate 103, and the flow rate is adjusted according to the insertion amount.

[0003]

In the above-mentioned conventional flow control valve 100, the closing plate 103 has a structure in which it is in direct contact with a fluid. When used for flow rate adjustment, inclusions solidify in the gap between the valve body and the closing plate, the gap between the rotating shaft and the closing plate, and impede the rotation of the rotating shaft and the movement of the closing plate. In such a case, there is a problem that the device cannot be used.

In such a case, the flow control valve 10
Therefore, it is necessary to replace the entirety of the valve, and the cost for the ridge adjustment valve and the labor involved in the replacement work are required, which raises a problem that the maintenance cost is increased. Therefore, an object of the present invention is to provide a flow control valve capable of reducing the influence of coagulated material in the flow control valve and reducing the maintenance cost.

[0005]

According to a first aspect of the present invention, there is provided an elastic pipe for allowing a fluid formed by an elastic member to flow through a casing, the pipe being detachably mountable in the casing. By deforming the elastic pipe portion and a pipe unit having a portion,
A flow rate adjusting unit that adjusts the flow rate of the fluid or interrupts the flow.

According to a second aspect of the present invention, in the first aspect, the flow rate adjusting unit changes a flow path cross-sectional area of the elastic pipe portion with a closing member for elastically deforming the elastic pipe portion. And a driving member for driving the closing member so that the closing member is driven. According to a third aspect of the present invention, in the configuration of the second aspect, a handle portion operated by a user is provided, and the driving member drives the closing member in accordance with an operation amount of the handle portion. And

According to a fourth aspect of the present invention, in the configuration of the first aspect, the flow rate adjustment unit is rotated about a predetermined rotation fulcrum by a user's operation, and the elastic pipe portion is rotated. And a rotary closing member for elastically deforming the elastic member. According to a fifth aspect of the present invention, in the configuration of the first aspect, the flow rate adjusting unit has a guide groove, and an operation unit main body for a user to perform a flow rate adjusting operation; It is characterized in that it is provided with a rotation closing member for being rotated around a predetermined rotation fulcrum by being guided in the guide groove and for elastically deforming the elastic pipe portion.

According to a sixth aspect of the present invention, in the configuration of the fifth aspect, the operation portion main body of the flow rate adjusting unit is configured to be able to move the outer peripheral surface of the casing along a longitudinal direction of the elastic pipe portion. The flow rate adjusting unit includes a holding member capable of holding the position of the operation portion main body in the longitudinal direction against the elasticity of the elastic pipe portion.

According to a seventh aspect of the invention, in the configuration of the fifth or sixth aspect, the rotation closing member is rotated about a first rotation fulcrum which is the predetermined rotation fulcrum. The first rotation closing member is rotated about a second rotation fulcrum, which is the predetermined rotation fulcrum, and
In cooperation with the rotation closing member, sandwiching the elastic pipe portion,
A second rotation closing member for elastically deforming the elastic pipe portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to the drawings. [1] First Embodiment FIG. 1 is a partially exploded perspective view of a flow control valve according to a first embodiment. The flow control valve 10 is roughly composed of a valve main body 11 functioning as a casing, and a pipe unit 12 detachably mounted on the valve main body 11.

The valve body 11 has a projection 15 for closing the passage.
And has a storage casing 16 for storing the pipe unit 12, a rotary handle 17 for a user to perform an operation for adjusting the flow rate, and a screw 18 </ b> A (see FIG. 2), which is interlocked with the rotary handle 17. Spindle section 18 that rotates by rotation, and screw receiving section 19A that is screwed into screw section 18A.
(See FIG. 2), and a closing member 19 that is inserted into the storage casing 16 as the spindle 18 rotates.

The pipe unit 12 has a pipe body 21 formed of silicone rubber as an elastic material, and a bolt 22 (see FIG. 2) and a nut 23 (see FIG. 2) when the pipe unit 12 is housed in the valve body 11. (See FIG. 2), and a fixing panel portion 24 provided with a fixing hole 24A for fixing. FIG.
An operation explanatory diagram of the flow control valve 10 of the first embodiment is shown in FIG. FIG. 2A shows the flow control valve 10 in the open state.
FIG. 4 is a cross-sectional view showing the closing member 1 in this state.
9 is housed in the upper part of the valve body 11 and is separated from the pipe body 21. This makes the pipe body 2
The fluid will flow at the maximum flow rate in 1.

On the other hand, FIG. 2B is a cross-sectional view showing the flow control valve 10 in a closed state. In this state, the closing member 19 is pushed down while elastically deforming the pipe body 21. It is in a state of contact with the flow path closing projection 15 via the pipe body 21. Therefore, the fluid cannot flow in the pipe body 21.

The above description has been made in the case of the open state and the closed state.
Is located, the fluid having the flow rate corresponding to the position of the closing member 19 flows in the pipe main body 21. In this case, the storage casing 1 provided with the spindle portion 18 or the closing member 19 or the projection 15 for closing the flow path, which is the sliding portion of the flow rate adjusting valve 10.
Since the liquid 6 does not come into direct contact with the liquid, the gas in which the liquid is vaporized, or the gas contained in the liquid, the movement of the flow control valve 10 is not hindered by the solidification of the components contained in the liquid.

[2] Second Embodiment FIG. 3 shows a schematic configuration diagram of a flow control valve according to a second embodiment. 3A is a front cross-sectional view of the flow control valve, FIG. 3B is a top cross-sectional view of the flow control valve, and FIG. 3C is a side cross-sectional view of the flow control valve. . In the first embodiment, the valve body is formed integrally, but in the second embodiment, the valve body is divided into two.

The flow control valve 30 is roughly divided into a valve body 31 functioning as a casing and a valve body 3.
1 and a pipe main body 32 formed of silicon rubber as an elastic material. The valve main body 31 is provided with a valve main body upper part 31A and a valve main body lower part 31B, and the valve main body upper part 31A and the valve main body lower part 31B are bolted nuts 33 in a state where the pipe main body 32 is sandwiched and fixed from above and below. Are fixed to each other.

The upper portion 31A of the valve body has a rotary handle portion 34 for the user to perform an operation for adjusting the flow rate, and a screw portion 36A. The rotary handle portion 34 is fixed to the rotary handle portion 34 with a screw 35 and is attached to the rotary handle portion 34. It comprises a spindle part 36 that rotates in conjunction with it, and a closing member 37 that has a screw receiving part 37A screwed to the screw part 36A, and is inserted into the valve body 31B with the rotation of the spindle part 36. Have been.

Further, a fixing cover 39 for fixing the spindle portion 36 so as not to come off is provided on the upper portion 31A of the valve body via a spacer 38. Pipe body 32
Is stored in the valve body 31 and the washer 4
1 and an external metal pipe 43
Is fixed to the connection end 43A. In this case, the pipe body 32, the washer 41, and the bolt / nut 42 function as a pipe unit.

The lower part 31B of the valve body is provided with a projection 44 for closing the passage. Next, the operation of the second embodiment will be described with reference to FIG. As shown in FIG. 3A, when the flow control valve 30 is in the open state, the closing member 37 is housed on the upper side of the valve main body upper part 31 </ b> A and is separated from the pipe main body 32. As a result, the fluid flows through the pipe body 32 at the maximum flow rate.

Thereafter, when the rotary handle 34 is rotated clockwise, the spindle 36 rotates clockwise in conjunction with the rotary handle 34. At this time,
Since the screw portion 36A of the spindle portion 36 is screwed into the screw receiving portion 37A of the closing member 37, the closing member 37 is inserted into the valve main body lower portion 31B with the rotation of the spindle portion 36. With this insertion, the pipe body 3
3 is pressed downward in FIG. 3, is elastically deformed, the cross-sectional area of the flow path is reduced, and the flow rate of the fluid gradually decreases. When the closing member 37 comes into contact with the flow path closing projection 44 via the pipe body 32, the fluid cannot flow in the pipe body 21 and the flow of the fluid is shut off.

In this case, similarly to the first embodiment, the valve body 31 provided with the spindle portion 36, the closing member 37, or the projection portion 44 for closing the flow path in the flow control valve 30 is a liquid, a gas in which the liquid is vaporized. Alternatively, since there is no direct contact with gas or the like contained in the liquid, the solidification of the components contained in the liquid causes the flow control valve 3
The movement of zero is not disturbed. [3] Third Embodiment FIG. 4 is a partial cross-sectional perspective view of a flow control valve according to a third embodiment. In FIG. 4, the same parts as those in the first embodiment of FIG. 1 are denoted by the same reference numerals.

The flow control valve 50 is roughly divided into a valve body 51 functioning as a casing and a valve body 5.
1 and a pipe unit section 12 which is configured to be detachable. The valve main body 51 is provided with a flow path closing projection 15 and includes a storage casing 16 for storing the pipe unit 12, a rotary lever handle 53 for a user to perform an operation for adjusting a flow rate, and a rotary lever handle. A rotary cam portion 55 connected to the rotary lever 53 via a rotary shaft 54 and rotating in conjunction with the rotary lever handle portion 53;
And a first cam receiving portion 56 and a second cam receiving portion 57, and a closing member 58 inserted into the storage casing 16 in accordance with the rotational state of the rotary cam portion 55, that is, the position of the rotary cam convex portion 55A. And is provided.

FIG. 5 shows a flow control valve 50 according to the third embodiment.
2 shows a cross-sectional view in an open state. Flow control valve 50
In the opened state, the rotating cam projection 55A, which is the tip of the rotating cam 55, is connected to the first cam receiving portion 5 of the closing member 58.
The closing member 58 is housed on the upper side of the valve body 11 due to the elasticity of the pipe body 21. As a result, the fluid flows through the pipe body 21 at the maximum flow rate. Thereafter, when the rotation lever handle 53 is rotated clockwise, the rotation shaft 54 rotates clockwise in conjunction with the rotation handle 34. At this time, the closing member 53 is slid downward in FIG. 5 in accordance with the position of the rotary cam projection 55A, and inserted into the valve body 31B.

With the insertion of the closing member 53, the pipe main body 21 is pressed downward in FIG.
The cross-sectional area of the flow path is reduced, and the flow rate of the fluid gradually decreases. When the rotary cam projection 55A rotates to a position where it engages with the second cam receiving portion 57, the closing member 53
Is in contact with the flow path closing projection 15 via the pipe body 21, so that the fluid cannot flow through the pipe body 21 and the flow of the fluid is shut off. Also in this case, similarly to the first embodiment, the flow control valve 50
In the above, the valve body 21 provided with the rotating shaft 54, the rotating cam portion 55 or the closing member 53 or the flow path closing projection 15 is in direct contact with a liquid, a gas obtained by evaporating the liquid, or a gas contained in the liquid. Therefore, the movement of the flow control valve 50 is not hindered by the solidification of the component contained in the liquid.

[4] Fourth Embodiment FIG. 6 is a cross-sectional view of a flow control valve according to a fourth embodiment.
6, the same parts as those in the first embodiment in FIG. 2 are denoted by the same reference numerals. The flow control valve 60 is roughly divided into a valve body 61 functioning as a casing.
And a pipe unit 12 detachably mounted on the valve body 61. Valve body 6
1 is a housing casing 63 provided with a channel closing projection 62 for housing the pipe unit 12 and a rotating lever handle 6 for a user to perform an operation for adjusting the flow rate.
4 is provided.

FIG. 6A is a cross-sectional view showing the flow control valve 60 in an open state. In this state, the rotating lever handle 64 is in a collapsed state. At this time, the closing member 64A provided at the end of the rotating lever handle portion 64 on the inner side of the valve main body 61 is configured to be longer than the diameter of the pipe main body 21 in a direction perpendicular to the paper surface. , Is in a state where the pipe body 21 is not pressed. As a result, the fluid flows through the pipe body 21 at the maximum flow rate.

FIG. 6B is a cross-sectional view showing the flow control valve 10 in a closed state. In this state, the rotating lever handle 64 rotates about a rotating center 64B. As a result, the closing member 64A is pushed down while elastically deforming the pipe main body 21, and is in a state of contact with the flow path closing projection 62 via the pipe main body 21. Therefore, the fluid cannot flow in the pipe body 21.

The above description has been made in the case of the open state and the closed state.
Is located, the fluid having the flow rate corresponding to the position of the closing member 64 </ b> A flows in the pipe main body 21. In this case, the storage casing 61 provided with the turning lever handle portion 64 (the closing member 64A) of the flow rate adjusting valve 60 or the flow path closing projection 62 is provided.
However, since the liquid does not come into direct contact with the liquid, the gas in which the liquid is vaporized, or the gas contained in the liquid, the solidification of the liquid-containing component does not hinder the movement of the flow control valve 60.

[5] Fifth Embodiment FIG. 7 is an external perspective view of a flow control valve according to a fifth embodiment. The pipe main body 82 of the flow control valve 70 is fixed to a transport pipe 73 for transporting a fluid by a washer 71 and a bolt nut 72. Flow control valve 7
0 is roughly divided into a valve main body 75 functioning as a casing, a flow adjusting slider section 76, and a screw groove provided in the valve main body 75 for fixing the flow adjusting slider section 76 at a position corresponding to a desired flow rate. 75C and a slider fixing portion 77 having a screw portion 77A to be screwed.

FIGS. 8 to 11 show the process of assembling the flow control valve 70. FIG. As shown in FIGS. 7 and 8, the valve body 75 includes a valve body upper portion 75A. Further, as shown in FIGS. 7 and 8B, a guide groove 78A for guiding the flow rate adjusting slider portion 76 is provided in the upper portion 75A of the valve body along the longitudinal direction. Furthermore, in the valve body upper part 75A,
The first closing member 80A is arranged in the first guide groove 81A with the rotation shaft 79A as the center of rotation, and is in contact with the pipe main body 82.

Similarly, the valve body 75 is provided with a valve body lower portion 75B as shown in FIGS. Further, as shown in FIGS. 7 and 9B, a guide groove 78B for guiding the flow rate adjusting slider portion 76 is provided in the lower portion 75B of the valve body along the longitudinal direction. Further, a first closing member 80B is provided on the lower part 75B of the valve body with the first closing member 80B about a rotation shaft 79B as a rotation center.
It is arranged in the guide groove 81B and is in contact with the pipe body 82.

The valve body upper portion 75A and the valve body lower portion 75B are fixed by bolt nuts 83 with the pipe body 83 housed inside. Further, when the assembly of the valve body 75 is completed, as shown in FIG. 10, a flow rate adjusting slider portion 76 is attached to the flow rate adjusting valve 70 so as to sandwich the valve body 75. 10A and 10A.
As shown in (b), a first flow rate adjusting slider body having a rail-shaped engaging projection 86A engaging with the guide groove 78A and a curved flow rate adjusting guide groove 87A for guiding the first closing member 80A. 88A, a rail-shaped engaging projection 86B engaging with the guide groove 78B, and the second closing member 8
Curved flow adjustment guide groove 87 for guiding OB
B, and a second flow adjustment slider main body 88B provided with B. The first flow adjustment slider main body 88A and the second flow adjustment slider main body 88B are fixed by bolts and nuts 89. When the flow rate slider 76 is attached to the valve body 75A, as shown in FIG. 11A, the screw portion 77A of the slider fixing portion 77 is attached so as to screw with a thread groove 75C provided in the valve body 75.

Next, the operation of the flow control valve of the fifth embodiment will be described with reference to FIG. FIG. 12A is an explanatory diagram of the operation of the flow control valve 70 in the open state. In this state, the first closing member 80A is located at the left end of the flow control guide groove 87A in the drawing, and the second closing member 80A is in the second position. The closing member 80B is also located at the left end in the drawing of the flow adjustment guide groove 87B. As a result, as shown in FIG. 12B, the first closing member 80A and the second closing member 80B are only in contact with the pipe main body 82 and are not pressing the pipe main body 82. As a result, the fluid flows at the maximum flow rate in the pipe body 82.

When the slider fixing portion 77 is rotated and screwed in the state of FIG. 12A, the screw fixing portion 77A is screwed into the screw groove 75C provided in the valve body 75, so that the slider fixing portion 77 is It will advance in the direction of arrow X. As a result, the flow rate adjusting slider 76 in contact with the slider fixing 77 is also slid in the direction of the arrow X and moves. At this time, the tip of the first closing member 80A is moved in the direction of arrow Y1 along the flow adjustment guide groove 87A, and the tip of the second closing member 80B is moved in the flow adjustment guide groove 8A.
It is moved in the direction of arrow Y2 along 7B. This allows
The pipe main body 82 is sandwiched between the first closing member 80A and the second closing member 80B with a substantially uniform force, so that fluid cannot flow through the pipe main body 82.

Although the above description has been made in the case of the open state and the closed state, the first closing member 80A and the second closing member 80B are fixed by fixing the slider fixing portion 77 in an arbitrary state therebetween. Thus, the pipe body 82 is sandwiched with a substantially uniform force in a state corresponding to the positions of the slider fixing portion 7 and the flow rate adjusting slider 76, so that the flow rate of the fluid can be adjusted. Also in this case, the valve body 75 constituting the flow control valve 70, the flow control slider 76, the slider fixing portion 77, the first closing member 8
0A and the second closing member 80B do not come into direct contact with a liquid, which is a fluid, a gas in which the liquid is vaporized, or a gas contained in the liquid. Does not impair the function.

In this case, according to the elasticity of the pipe body 82 and the pressure of the fluid flowing through the pipe body 82, the thread cutting angle of the thread groove 75C provided on the valve body 75 and the threaded portion 77A provided on the slider fixing portion 77 is set. Thereby, the first closing member 80A and the second closing member 80B can be configured not to be pushed back by the elasticity of the pipe body 82 or the pressure of the fluid flowing in the pipe body 82. is there.

[5.1] Modification of Fifth Embodiment In the above description, the two movable members of the first closing member 80A and the second closing member 80B for changing the cross-sectional area of the flow path of the pipe body 82 are described. However, any one of them may be used as a fixing member by forming a flow path closing protrusion as in the first to fourth embodiments.

[6] Effects of the Embodiment As described above, according to the present embodiment, the closing member or the spindle, which is the movable portion of the flow control valve, does not directly contact the liquid to be flow-controlled. In addition, it is possible to prevent a malfunction of the flow control valve due to the solidification of the liquid or a gas in which the liquid is vaporized. In addition, since the pipe body is sandwiched in the axial direction, unnecessary stress is not generated in the pipe body, and the length of the pipe body can be reduced. Furthermore, since a configuration that allows manual operation is employed, the number of components can be reduced. As a result, the manufacturing cost can be reduced and the product life can be prolonged.

[7] Modification of Embodiment In the above description, the case where the flow rate control valve is manually operated has been described. However, the present invention can be applied to the case where the flow rate control valve is operated electrically using a motor or the like. Become.

[0040]

According to the present invention, since the movable portion of the flow control valve does not directly contact the liquid to be flow-controlled with a simple configuration, the flow rate of the liquid or the vaporized gas of the liquid can be reduced. It is possible to prevent malfunction of the adjustment valve. In addition, since the pipe body is sandwiched in the axial direction, unnecessary stress does not occur in the pipe body, the length of the pipe body can be shortened, and the number of parts can be reduced. Therefore, the manufacturing cost of the flow control valve can be suppressed, and the product life can be prolonged.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view of a flow control valve according to a first embodiment.

FIG. 2 is an explanatory diagram of an operation of the flow control valve of the first embodiment.

FIG. 3 is an explanatory view of a flow control valve according to a second embodiment.

FIG. 4 is a partially exploded perspective view of a flow control valve according to a third embodiment.

FIG. 5 is an operation explanatory view of a flow rate adjusting valve according to a third embodiment.

FIG. 6 is an explanatory diagram of a flow control valve according to a fourth embodiment.

FIG. 7 is an external perspective view of a flow control valve according to a fifth embodiment.

FIG. 8 is an assembly process diagram (part 1) of a flow rate adjustment valve according to a fifth embodiment.

FIG. 9 is an assembly process diagram (part 2) of the flow rate adjustment valve according to the fifth embodiment.

FIG. 10 is an assembly process diagram (part 3) of the flow rate adjustment valve according to the fifth embodiment.

FIG. 11 is an assembly process diagram (part 4) of the flow rate adjustment valve according to the fifth embodiment.

FIG. 12 is an operation explanatory view of the flow rate adjusting valve of the fifth embodiment.

FIG. 13 is an explanatory view of a conventional flow adjustment valve.

[Explanation of symbols]

 10 Flow control valve 11 Valve body 12 Pipe unit 15 Protrusion for closing flow passage 16 Storage casing 17 Rotating handle 18 Spindle 18A Screw 19 Closing member 18A Screw receiving part 21 Pipe body 24 Fixing panel part 24A Fixing hole 30 Flow control valve 31 Valve body 31A Upper valve body 31B Lower valve body 32 ... Pipe body 34 Rotating handle part 36 Spindle part 37 Closing member 37A Screw receiving part 38 Spacer 39 Fixing lid 43 Metal pipe 43A Connection end part 44 Flow Road blocking projection 50 Flow control valve 51 Valve body 53 Rotating lever handle 54 Rotating shaft 55 Rotating cam 55A Rotation Cam convex portion 56 First cam receiving portion 57 Second cam receiving portion 58 Closing member 58 60 Flow rate regulating valve 61 Valve body 62 Projecting portion for closing flow passage 63 Storage casing 64: Rotating lever handle 64A: Closing member 64B: Rotating center 70: Flow control valve 75: Valve body 76: Flow control slider 77: Slider fixing part 78A: Guide groove 79A , 79B ... rotating shaft 80A ... first closing member 80B ... second closing member 82 ... pipe main body

Claims (7)

[Claims] 1. A casing, a pipe unit detachable in the casing and having an elastic pipe part for flowing a fluid formed by an elastic member, and a fluid unit by deforming the elastic pipe part. And a flow control unit for controlling the flow rate of the fluid or shutting off the flow. 2. The flow control valve according to claim 1, wherein the flow control unit comprises: a closing member for elastically deforming the elastic pipe portion; and the closing member for changing a flow path cross-sectional area of the elastic pipe portion. And a driving member for driving the member. 3. The flow control valve according to claim 2, further comprising a handle portion operated by a user, wherein the driving member drives the closing member in accordance with an operation amount of the handle portion. To adjust the flow rate. 4. The flow control valve according to claim 1, wherein the flow control unit is turned around a predetermined turning fulcrum by a user's operation,
A flow regulating valve, comprising: a rotation closing member for elastically deforming the elastic pipe portion. 5. The flow control valve according to claim 1, wherein the flow control unit has a guide groove, and an operation unit main body for a user to perform a flow control operation; and the guide according to the flow control operation. A flow regulating valve, characterized in that the valve is turned around a predetermined turning fulcrum by being guided in the groove, and is provided with a turning closing member for elastically deforming the elastic pipe portion. 6. The flow rate adjusting valve according to claim 5, wherein the operation portion main body of the flow rate adjusting unit is configured to be able to move on an outer peripheral surface of the casing along a longitudinal direction of the elastic pipe portion. The flow rate adjusting valve includes a holding member capable of holding the position of the operation unit body in the longitudinal direction against the elasticity of the elastic pipe portion. 7. The flow control valve according to claim 5, wherein the rotation closing member is rotated about a first rotation fulcrum that is the predetermined rotation fulcrum. A closing member, being rotated about a second rotation fulcrum, which is the predetermined rotation fulcrum, and cooperating with the first rotation closing member to sandwich the elastic pipe portion; A flow control valve, comprising: a second rotary closing member for elastic deformation.