KR20140049836A - Medical fluid flow rate controlling apparatus - Google Patents

Abstract

The present invention provides an apparatus for controlling the flow of a chemical liquid, comprising: a housing having a valve chamber; a rotatable member rotatably accommodated in the valve chamber; a plurality of chemical liquid transfer lines which is introduced into the valve chamber, which wraps around the outer circumference of the rotatable member in different heights and which is led out from the valve chamber; a chemical liquid combining device for combining the chemical liquids flowing out from the plurality of chemical liquid transfer lines into a single flow; and a transfer line open/shut means for selectively pressing or releasing the chemical liquid transfer lines in the valve chamber such that all of the plurality of chemical liquid transfer lines are opened or shut or a portion of the plurality of chemical liquid transfer lines is shut according to the rotation angle of the rotatable member.

Description

Technical Field [0001] The present invention relates to a medical fluid flow rate control apparatus,

The present invention relates to a control device used for adjusting a dose (flow rate) when a drug solution such as an analgesic agent, an antibiotic, etc. is administered to an administration subject (for example, a patient) requiring administration of the drug solution.

In general, cancer patients are treated with special antibiotics to treat cancer. Analgesics are administered to patients who need pain management to relieve pain. Unlike other common medicines, special medicines such as antibiotics and analgesics are used excessively It is very important to administer the correct amount within the allowable range because the patient can lead to coma or shock when administered, and in the opposite case, when the dose is low, the drug can not achieve the purpose exactly.

Previously, the drug solution was administered using a syringe. However, in the system using the syringe, the dosage of the drug solution is determined according to the proficiency of the syringe operator, and it is very difficult to keep the drug solution dose (rate) per hour constant since the operator has to be continuously involved each time the drug solution is administered. That is, it was not easy to manage and maintain the dose of the drug solution.

Alternatively, the dosage may be adjusted by providing a dose adjusting device in the hose for drug solution administration. However, since the dose is controlled depending on the degree to which the dosage adjusting mechanism presses the hose, it is difficult to accurately administer the required amount of the nutrient solution depending on the condition of the patient who changes from time to time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a chemical liquid flow rate control device which can precisely control the flow rate of a chemical liquid so that a required chemical liquid is dispensed.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood from the following description if they are common knowledge (those skilled in the art to which the present invention belongs).

According to an embodiment of the present invention, there is provided a valve apparatus comprising: a housing having a valve chamber; A rotary member rotatably accommodated in the valve chamber of the housing; A plurality of chemical liquid transfer lines drawn into the valve chamber and drawn out from the valve chamber at respective different heights so as to be spaced apart from each other at an outer periphery of the rotating member and fixed in position to maintain a fixed state when the rotating member rotates; A chemical liquid confluence mechanism which combines the chemical liquid flowing through the plurality of chemical liquid conveying lines so as to be a single flow; Selectively pushing the plurality of chemical liquid transfer lines in the valve chamber so that at least one of the plurality of chemical liquid transfer lines is opened or at least one of the plurality of chemical liquid transfer lines is closed according to a rotation angle of the rotating member, And a transfer line opening / closing means for opening / closing the transfer line.

The transfer line opening / closing means may apply pressure to the inner circumferential side of the valve chamber facing the outer periphery of the rotary member to the plurality of liquid chemical transfer lines to close the plurality of liquid chemical transfer lines.

Here, the valve chamber may be cylindrical, and the transfer line opening / closing means may include a single or a plurality of pressing portions for pressing the plurality of chemical liquid transfer lines while rotating together with the rotating member at the periphery of the rotating member; And a plurality of recessed grooves provided in the inner circumference of the valve chamber so as to release the pressurized state of the chemical liquid transfer line by the pressurizing portion when the pressurizing portions are positioned so as to face each other on a height corresponding to each of the plurality of chemical liquid transfer lines Wherein the groove portion on each height is released from the pressing portion of the pressing portion against the plurality of chemical liquid transfer lines in accordance with the rotation angle of the rotary member or at least one of the plurality of chemical liquid transfer lines is pressed by the pressing portion Lt; / RTI >

The plurality of pressing portions are provided so as to be spaced apart from each other in the inner circumferential direction of the valve chamber on the respective heights, Is positioned so as to be on the same straight line along the height of the rotary member so that when the pressing portion is positioned so as to face the first groove portion on the same straight line, the plurality of chemical liquid transferring lines Can be opened by releasing all of the pressing by the user.

In addition, three liquid transfer lines may be provided, and four grooves may be provided at first, second, and third heights of different heights, and the first to fourth grooves of the first height may be arranged at intervals of 90 degrees And a second groove portion of the second height lower than the first height is disposed at a position spaced 45 degrees from the first groove portion of the second height and the third and fourth groove portions of the second height are disposed at a position spaced by 45 degrees from the first groove portion of the second height, And the second to fourth grooves of the third height lower than the second height are arranged to face the first and second grooves of the second height from the first groove part of the third height, And the second grooves are spaced apart by 45 degrees from each other in the spacing direction of the second grooves.

And the first groove sections on the same straight line may be provided with inlet and outlet holes for respectively drawing and withdrawing the plurality of chemical liquid transfer lines.

The pressing portion may include a pressure roller that presses the plurality of chemical liquid transfer lines and rotates by friction with the chemical liquid transfer line when the rotating member rotates.

The rotating member may have a cylindrical shape, and a transfer line inserting groove portion into which the plurality of chemical liquid transferring lines are inserted may be provided along an outer periphery.

The chemical liquid flow rate control apparatus according to an embodiment of the present invention may further include a chemical liquid branching mechanism that divides the chemical liquid from the chemical liquid supply source into the plurality of chemical liquid transfer lines at a different flow rate, have.

The housing has an instrument chamber for accommodating the liquid chemical branching mechanism and the chemical liquid confluence mechanism, so that the inlet-draw-out hole can be disposed between the valve chamber and the instrument chamber.

The chemical liquid flow rate control apparatus according to an embodiment of the present invention may further include rotation angle determination means for determining a position between the valve chamber and the rotation member to rotate the rotation member according to a predetermined angle.

The rotation angle determining means includes a plurality of engaging grooves provided along the circumferential direction to be spaced apart from each other on the bottom surface of the rotating member; A locking member provided on the bottom of the valve chamber in a cantilever form so as to bend and move for separation and access to a bottom of the rotating member, and having a locking protrusion fitted to one of the locking grooves according to the rotation angle of the rotating member. It may include.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: Means for solving various problems besides the means will be further presented below.

The present invention can control the flow rate of the chemical liquid precisely and precisely and administer a predetermined amount of the chemical liquid to the subject. In particular, since the present invention controls the flow rate of the chemical liquid by pressurizing the chemical liquid transfer line and releasing the pressurization, there is no fear of chemical liquid leakage.

1 and 2 are perspective views illustrating a chemical liquid flow rate control apparatus according to the present invention.
3 is a plan sectional view showing a chemical liquid flow rate control apparatus according to the present invention.
4 is an exploded perspective view showing the housing shown in Figs. 1 to 3. Fig.
5 is a sectional view taken along the line JJ in Fig.
FIG. 6 is a perspective view showing a coupling relationship between the rotating member, the chemical liquid transfer lines, the chemical liquid branching mechanism, the chemical liquid joining mechanism, and the like shown in FIG. 3 and FIG.
7 and 8 are a perspective view and a side sectional view showing the rotating member.
9 is a cross-sectional view taken along line KK, line LL and line MM of Fig.
10 to 17 are use state diagrams showing whether the chemical liquid transfer lines are open or closed according to the rotation angle of the rotating member.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For the sake of convenience, the size, line thickness, and the like of the components shown in the drawings referenced in the description of the present invention may be exaggerated somewhat. The terms used in the description of the present invention are defined in consideration of the functions of the present invention, and thus may vary depending on the user, the intention of the operator, customs, and the like. Therefore, the definition of this term should be based on the contents of this specification as a whole.

1 and 2 are perspective views illustrating a chemical liquid flow rate control apparatus according to the present invention, FIG. 3 is a plan sectional view illustrating a chemical liquid flow rate control apparatus according to the present invention, and FIG. 4 is a cross- Fig.

1 to 4, the chemical liquid flow rate control apparatus according to the present invention includes a housing 10 provided with a valve chamber 11 partitioned from each other and a mechanism chamber 12 adjacently disposed laterally, A rotational member 20 operated by operation, and three chemical liquid transfer lines 30A, 30B and 30C for transferring the chemical liquid.

The housing 10 may be constituted by a left housing member 10L and a right housing member 10R which are coupled to each other in pairs. The valve chamber 11 is formed into a cylindrical shape having a predetermined height in the vertical direction and the rotary member 20 is accommodated in the valve chamber 11 so as to be rotatable about a vertical axis coinciding with the center portion of the valve chamber 11 do.

FIG. 5 is a sectional view taken along the line JJ in FIG. 3, and FIG. 6 is a cross-sectional view taken along the line JJ in FIG. FIG. 3, 5, and 6, the chemical liquid transfer lines 30A, 30B, and 30C are drawn from the instrument chamber 12 into the valve chamber 11, H2 and H3 of the valve chamber 11 and the valve chamber 11, respectively. At this time, the chemical liquid transfer lines (30A, 30B, 30C) spaced apart from each other up and down maintains a fixed state without being rotated together with the rotating member 20 during the rotation of the rotating member 20 by fixing its position. . The chemical liquid transfer lines 30A, 30B, and 30C are composed of a flexible hose (tube) that can be flatly compressed and restored to its original shape, such as a silicone hose or a PVC hose.

Figs. 7 and 8 are a perspective view and a side sectional view showing the rotary member 20, and the rotary member 20 has a cylindrical structure, as shown in Figs. A transfer line inserting groove portion 21 is formed along the outer circumference of the rotary member 20 so as to insert chemical liquid transfer lines 30A, 30B and 30C surrounded by different heights H1, H2 and H3, On both sides of the transfer line insertion groove 21, a circular flange portion 22 protruding relatively is provided.

The rotary member 20 is accurately rotated about the vertical axis coinciding with the central portion of the valve chamber 11 by the guiding action of the guide. 4, the rotary motion guide guide of the rotary member 20 includes a flange portion 22 (see FIG. 4) on one or more than two different heights corresponding to the flange portion 22 in the inner circumference of the valve chamber 11, And a guide groove 13 provided along the inner periphery of the valve chamber 11 so that the guide groove 13 can be inserted.

As shown in FIG. 3, in the valve chamber 11, the chemical liquid transfer lines 30A, 30B, and 30C are opened and closed by the transfer line opening / closing means 100. As shown in FIGS. 3 and 6, the chemical chamber 12 is provided with a chemical liquid branching mechanism 40 and chemical liquid transfer lines 30A, 30B, 30C for introducing the chemical liquid into the chemical liquid transfer lines 30A, 30B, , 30C) are accommodated in a single flow. Referring to Fig. 4, the housing 10 is provided with a communication opening 14 communicating with the valve chamber 11 at a portion opposed to the upper portion of the rotary member 20. In Figs. 1 and 2, reference numeral 60 denotes an operation handle used for an operation of rotating the rotary member 20. Fig. The operation handle 60 is detachably coupled to the upper portion of the rotary member 20 through the communication opening 14 of the housing 10 from outside the housing 10 so that the rotary member 20 is rotatably supported by the operation handle 60 are rotated to the left and right to rotate in the same direction as the operation handle 60.

6, the chemical liquid branching mechanism 40 is branched from the single inflow pipe 41 and the inflow pipe 41 into which the chemical liquid is supplied from the chemical liquid supply source and is connected to the chemical liquid transfer lines 30A, 30B, 30C And three flow control tubes 42A, 42B, and 42C connected to one of the opposite ends of the flow control tube 42A, 42B, and 42C, respectively. The chemical liquid inflow hose 72 is connected to the inflow pipe 41 so as to transport the chemical liquid from the chemical liquid supply source. The chemical liquid inflow hose 72 is connected through the inflow hose withdrawing hole 16 shown in FIG. (10). The three flow rate control pipes 42A, 42B and 42C are constituted by capillaries having different sectional areas of the pipeline.

The chemical liquid confluence mechanism 50 includes a single confluent pipe 51 and three branch pipes 52 branched from the confluent pipe 51 and connected to the other of the opposite ends of the chemical liquid transfer lines 30A, 30B, . The chemical liquid outflow hose 74 is connected to the confluent pipe 51 for transporting the chemical liquid flowing out of the confluent pipe 51 to a desired location. The chemical liquid outflow hose 74, as shown in FIGS. 1, Is drawn out to the outside of the housing (10) through the outlet hose draw-out hole (17). The chemical solution outflow hose 74 may be connected to an injection unit (for example, an injection needle or a catheter) for injecting the chemical solution into an administration target (patient or the like).

The chemical liquid branching mechanism 40 and the chemical liquid confluence mechanism 50 are accommodated in the mechanism chamber 12 by the position fixing means while being fixed in position so that the chemical liquid transfer lines 30A, 30B, and 30C are prevented from rotating together with the rotary member 20. [ 4, the position fixing means for the liquid chemical branching mechanism 40 and the chemical liquid confluence mechanism 50 are provided between at least one of the flow control tubes 42A, 42B, 42C of the chemical liquid branching mechanism 40, A support member 90 provided in the mechanism chamber 12 is fitted to at least one of the branch pipes 52 of the confluence mechanism 50 so as to support the chemical liquid branching mechanism 40 and the chemical liquid confluence mechanism 50 . Alternatively, as the position fixing means, a holder or a clamp type may be applied instead of the support member 90.

Detachable means for coupling the rotating member 20 and the operation handle 60, the coupling rod 81 provided on the operation handle 60, the coupling rod 81 can be fitted to the upper portion of the rotating member 20. It includes a coupling groove 82 provided. The positions of the coupling rod 81 and the coupling groove 82 may be mutually changed.

9 is a cross-sectional view taken along lines K-K, L-L, and M-M in FIG. The transfer line opening and closing means 100 opens or closes all the liquid transfer lines 30A, 30B and 30C according to the rotation angle of the rotary member 20 or closes only some of the liquid transfer lines 30A, 30B and 30C The flow rate of the chemical liquid flowing out of the chemical liquid confluence mechanism 50 is regulated. 3 to 9, the transfer line opening / closing means 100 includes a pressing portion 110 provided on the outer circumference of the rotary member 20 so as to be rotatable together with the rotary member 20, And includes a plurality of concave grooves 120 provided in the inner periphery. The pressurizing portion 110 applies pressure to the inner circumferential side of the valve chamber 11 to the chemical liquid transfer lines 30A, 30B and 30C to close the chemical liquid transfer lines 30A, 30B and 30C, The pushing portion of the liquid delivering lines 30A, 30B and 30C (the portion pressed by the pushing portion) enters the inside of the liquid delivering lines 30A, 30B and 30C when the pushing portion 110 is opposed So that the pressing state is released.

As shown in Figs. 7 and 8, the pressing portion 110 includes a linear central pin 111, which is provided in the form of traversing the flange portion 22 in the vertical direction from one side of the outer periphery of the rotary member 20, Three pressure rollers 112A, 112B and 112C which are rotatably mounted on the center pin 111 so as to be respectively located in the line insertion recesses 21 and which press the chemical liquid transfer lines 30A, 30B and 30C, respectively . The pressing rollers 112A, 112B and 112C are rotated about the center pin 111 by the friction action with the chemical liquid feed lines 30A, 30B and 30C when the rotating member 20 is rotated, Friction between the pressurizing portion 110 and the chemical liquid transfer lines 30A, 30B, and 30C, which are generated during the rotation process of the chemical liquid transfer lines 20A, 20B, 20C, is reduced.

9, four grooves 120 are provided on different heights H1, H2 and H3 corresponding to the chemical liquid transfer lines 30A, 30B and 30C in the inner circumference of the valve chamber 11 .

More specifically, the first to fourth trenches 121A, 122A, 123A and 124A of the first height H1 are arranged at intervals of 90 degrees along the inner circumference of the valve chamber 11, as in the K-K line sectional view.

The first groove 121B having the second height H2 lower than the first height H1 is equal to the first groove 121A of the first height H1 in the vertical direction as in the LL line cross- And the second groove portion 122B of the second height H2 is disposed at a position spaced apart from the first groove portion 121B of the second height H2 by 45 degrees in a counterclockwise direction when viewed from above do. The third groove portion 123B and the fourth groove portion 124B of the second height H2 are formed on the opposite sides of the first groove portion 121B and the second groove portion 122B of the second height H2, And the third groove portion 123B of the second height H2 is positioned on the same straight line in the vertical direction as the third groove portion 123A of the first height H1.

The first groove 121C having the third height H3 lower than the second height H2 has the first and second heights H1 and H2 located on the same straight line in the vertical direction, The first groove portions 121A and 121B in the vertical direction. The second to fourth trenches 122C, 123C and 124C of the third height H3 are separated from the first trench 121C of the third height H3 by 45 degrees in the counterclockwise direction when viewed from above The second groove portion 122C of the third height H3 is positioned on the same straight line in the vertical direction from the second groove portion 122B of the second height H2 and the third height H3 Is positioned on the same straight line in the vertical direction as the second groove portion 122A of the first height H1.

According to such an arrangement structure of the grooves 120, the chemical liquid transfer lines 30A, 30B, and 30C are pressed all or part by the pressing portion 110 when the rotary member 20 is rotated in 45 degree angular increments And is opened and closed while the pressing state by the pressing portion 110 is all released.

121B, and 121C of the first to third heights H1, H2, and H3 positioned on the same straight line in the up-and-down direction and the pressure rollers 112A, 112B, The chemical liquid transfer lines 30A, 30B, and 30C are all opened. 3, 4, and 9, the chemical liquid transfer lines 30A, 30B, and 30C are respectively introduced into the first groove portions 121A, 121B, and 121C from the instrument chamber 12 to the valve chamber 11 Out port 15 for withdrawing from the valve chamber 11 to the mechanism chamber 12 is provided.

4, 5, 7, and 8, the chemical liquid flow rate control apparatus according to the present invention includes a rotation angle determination unit that determines a rotation angle of the rotary member 20, which determines the position of the rotary member 20, (200). The rotation angle determining means 200 includes two recessed engagement grooves 210 which are provided on the bottom surface of the rotary member 20 so as to be spaced apart from each other at intervals of 180 degrees in the circumferential direction and face each other, And a latching member 220 having a latching protrusion which is provided in a cantilever-like manner so as to be able to move and deflect for approaching and approaching the bottom surface of the member 20 and is fitted in the latching groove 210, respectively. At this time, the bottom of the valve chamber 11 is structured so as to be divided on both sides with respect to the center of the valve chamber 11 as shown in Fig. 4, 18, and the engaging member 220 may be provided to be positioned in the divided opening 18 thus formed. As shown in FIGS. 4 and 7, when the rotation member 20 is rotated, the engagement protrusion of the engagement member 220 is naturally inserted into the engagement recess 210, Or a curved surface rounded at a predetermined angle.

The flow rate control pipe 42A connected to the chemical liquid transfer line 30A at the first position H1 of the three flow rate control pipes 42A, 42B and 42C has a chemical solution of 1 mL / h The flow rate control pipe 42B, which flows at the flow velocity and is connected to the chemical liquid feed line 30B at the second position H2, flows at a flow rate of 2 mL / h and flows at a flow rate connected to the chemical liquid feed line 30C at the third position H3 When the chemical liquid is configured to flow at a flow rate of 4 mL / h, the control tube 42C can control the amount of the chemical liquid to be administered to the subject by selecting one of the total 8 modes as follows. This will be described with reference to FIGS.

The pressure rollers 112A, 112B and 112C are positioned so as to face the first grooves 121A, 121B and 121C of the first to third heights H1, H2 and H3 The chemical liquid transfer lines 30A, 30B, and 30C in the first to third positions H1, H2, and H3 are all rotated in the clockwise direction by 45 degrees when viewed from above, The present invention is in an OFF mode in which the chemical liquid does not flow out from the confluent pipe 51 while the pressurized closed state is maintained by the openings 112A, 112B and 112C. When the rotary member 20 is rotated by 45 degrees as described above, the engaging member 220 is disengaged from the engaging groove 210 and then inserted into the adjacent engaging groove 210, .

Next, when the rotary member 20 is rotated from the top in the clockwise direction by 45 degrees (rotated clockwise by 90 degrees in the state of FIG. 17), as shown in FIG. 11, The chemical solution transfer lines 30A are brought into the open state in which the pressurization by the first pressure roller 112A at the height corresponding to the first position H1 is released and the chemical solution transfer lines 30B And 30C are kept in the closed state pressed by the second and third pressing rollers 112B and 112C at the heights corresponding to the second and third positions H2 and H3, Lt; RTI ID = 0.0 > mL / h. ≪ / RTI >

Then, when the rotary member 20 is rotated from the top in the clockwise direction by 45 degrees (rotated in the clockwise direction by 135 degrees in the state of FIG. 17), as shown in FIG. 12, The line 30A is in the closed state pressed by the first pressure roller 112A and the chemical liquid transfer line 30B in the second position H2 is in the open state in which the pressurization by the second pressure roller 112B is released While the chemical liquid transfer line 30C in the third position H3 is kept closed by the third pressure roller 112C while the chemical liquid flows out from the confluent pipe 51 at a flow rate of 2 mL / do.

Next, when the rotary member 20 is rotated from the top in the clockwise direction by 45 degrees (rotated in the clockwise direction by 180 degrees in the state of FIG. 17), as shown in FIG. 13, The chemical liquid transfer line 30B in the second position H2 is opened by the second pressure roller 112B in the released state in which the pressurization by the first pressure roller 112A is released, While the chemical liquid transfer line 30C at the third position H3 is maintained in the closed state pressurized by the third pressure roller 112C and the chemical liquid is discharged from the confluent pipe 51 at a flow rate of 3 mL / .

Then, when the rotary member 20 is rotated by 45 degrees in the clockwise direction (rotated in the clockwise direction by 225 degrees in the state of FIG. 17) when viewed from above, the first and second positions H1 and H2 The chemical liquid transfer lines 30A and 30B of the third position H3 are each in the closed state pressed by the first and second pressure rollers 112A and the chemical liquid transfer lines 30C of the third position H3 are in the closed state, 112C is released, the chemical liquid flows out from the confluent pipe 51 at a flow rate of 4 mL / h.

Next, when the rotary member 20 is rotated from the top in the clockwise direction by 45 degrees (rotated clockwise by 270 degrees in the state of FIG. 17), as shown in FIG. 15, The chemical liquid transfer line 30B in the second position H2 is in the closed state in which the second pressurization roller 30A is pressed by the second pressure roller 112B, While the chemical liquid transfer line 30C at the third position H3 is maintained in the open state in which the pressurization by the third pressure roller 112C is released and the chemical liquid is discharged from the confluent pipe 51 at a flow rate of 5 mL / .

Then, when the rotary member 20 is rotated 45 degrees clockwise (in the state of FIG. 17, rotated clockwise by 315 degrees) when viewed from above, as shown in FIG. 16, The line 30A is in the closed state pressed by the first pressure roller 112A and the chemical liquid transfer line 30B in the second position H2 is in the open state in which the pressurization by the second pressure roller 112B is released While the chemical liquid transfer line 30C at the third position H3 is maintained in the open state in which the pressurization by the third pressure roller 112C is released and the chemical liquid is discharged from the confluent pipe 51 at a flow rate of 6 mL / .

Finally, when the rotary member 20 is rotated from the top in the clockwise direction by 45 degrees (in the state of FIG. 17, clockwise by 360 degrees one rotation), as shown in FIG. 17, The chemical transfer lines 30B and 30C in the second and third positions H2 and H3 are brought into the open state in which the transfer line 30A is released from the pressurization by the first pressure roller 112A, The chemical liquid flows out from the confluent pipe 51 at a flow rate of 7 mL / h while the open state in which the pressurization by the rollers 112B and 112C is released is maintained.

The following table summarizes the operations as shown in the table below.

The present invention which operates in this manner can be very usefully used as follows.

In the case of the surgical patients, there is a difference in the degree of pain depending on the type of operation or individual difference, but most of them feel very severe pain at the beginning of the operation, and the pain gradually decreases with time, It is alleviated. Accordingly, when the medicinal solution is administered to the operation patient for the purpose of pain management, a mode in which all of the chemical liquid transfer lines 30A, 30B, and 30C are opened as shown in FIG. 17 is selected, The mode can be switched so that the amount is reduced step by step.

In the case of terminal cancer patients, the pain felt gradually increases with time, as opposed to the operation patients, so the dose of the drug solution can be increased step by step.

Reference numeral 95, which is not described above, is an instruction unit. The instruction unit 95 is provided on the exposed surface at the upper portion of the rotary member 20 so that it can be seen from the outside. Around the communication opening 14 of the housing 10, H, 3 mL / h, 4 mL / h, 5 mL / h, 6 mL / h (OFF, 1 mL / , 7 mL / h).

As described above, the chemical liquid flow rate control apparatus according to the present invention can be installed independently on the chemical liquid supply line including the chemical liquid inlet hose 72 and the chemical liquid outlet hose 74, but can be applied to the chemical liquid dispenser . This will be briefly described with reference to International Publication No. WO 2010/087677 filed by the present applicant (hereinafter referred to as prior patent).

Figures 10 and 11 of the prior patent disclose a drug solution dispenser. The drug solution delivery system of the prior patent includes a drug solution dose control device, and the drug solution flow rate control device according to the present invention can be applied to the drug solution administration device of this prior patent instead of the drug solution dose control device. Of course, the apparatus for controlling the flow rate of the chemical solution according to the present invention is incorporated in the main body of the chemical solution transmission (refer to reference numeral 110A and 110B of the prior patent) so that the operation handle 60 is exposed to the outside. The second branch hose (reference numeral 125 of the prior patent) is connected to the inflow pipe 41 and the merging pipe 51 in place of the chemical solution inflow hose 72 and the chemical solution outflow hose 74.

When the chemical liquid flow rate control device according to the present invention is applied to the chemical liquid dosing device as described above, the valve chamber 11 and the instrument chamber 12 are directly provided on the main body of the chemical liquid supply without the housing 10 Depending on the operating conditions, the mechanism chamber 12 may be configured to have only a structure for fixing the position of the chemical liquid branching mechanism 40 and the chemical liquid joining mechanism 50, instead of a structure having a certain space have.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

For example, in the above description, three chemical liquid transfer lines 30A, 30B and 30C are provided. However, the number of liquid chemical transfer lines 30A, 30B and 30C can be appropriately increased or decreased, The number of the pressing rollers 42A, 42B, and 42C, the pressing rollers 112A, 112B, and 112C may be increased or decreased. According to this configuration, the number of the grooves 120 provided for each of the heights H1, H2, and H3 can be appropriately increased or decreased and the spacing of the grooves 120 for each of the heights H1, H2, .

The pressing portion 110 and the groove portion 120 of the conveying line opening and closing means 100 are exchanged with each other so that the conveying line opening and closing means 100 is provided to the plurality of chemical liquid conveying lines 30A, 30B, It is also possible to constitute such that the pressing force is applied to the outer peripheral side of the base 20.

The flow rates of the chemical liquids of the flow rate control pipes 42A, 42B and 42C were 1 mL / h, 2 mL / h and 4 mL / h, , 0.5 mL / h, 1.0 mL / h, 1.5 mL / h, 2.0 mL / h, 2.5 mL / h, 3.0 mL / h, 3.5 mL / h).

10: housing 11: valve chamber
12: instrument room 13: guide groove
14: communication opening 15: inlet-outlet hole
20: rotary member 21: transfer line insertion groove
22: flange portion 30A, 30B, 30C: chemical liquid transfer line
40: chemical liquid branching device 41: inlet pipe
42A, 42B, 42C: a flow rate control tube 50: a chemical liquid confluence mechanism
60: Operation handle 100: Feed line opening / closing means
110: pressing portion 111: center pin
112A, 112B, 112C: pressure roller 120:
200: rotation angle determining means 210:
220:

Claims (12)

A housing having a valve chamber;
A rotary member rotatably accommodated in the valve chamber of the housing;
A plurality of chemical liquid transfer lines drawn into the valve chamber and drawn out from the valve chamber at respective different heights so as to be spaced apart from each other at an outer periphery of the rotating member and fixed in position to maintain a fixed state when the rotating member rotates;
A chemical liquid confluence mechanism which combines the chemical liquid flowing through the plurality of chemical liquid conveying lines so as to be a single flow;
Selectively pushing the plurality of chemical liquid transfer lines in the valve chamber so that at least one of the plurality of chemical liquid transfer lines is opened or at least one of the plurality of chemical liquid transfer lines is closed according to a rotation angle of the rotating member, And a transfer line opening / closing means for opening / closing the transfer line. The method according to claim 1,
Wherein the transfer line opening / closing means applies pressure to the plurality of chemical liquid transfer lines to the inner circumferential side of the valve chamber opposite to the outer periphery of the rotating member to close the plurality of chemical liquid transfer lines. The method according to claim 2,
Wherein the valve chamber is cylindrical,
Wherein the transfer line opening / closing means comprises: a single or a plurality of pressing portions for pressing the plurality of chemical liquid transfer lines while rotating together with the rotating member at the outer periphery of the rotating member; And a plurality of recessed grooves provided in the inner circumference of the valve chamber so as to release the pressurized state of the chemical liquid transfer line by the pressurizing portion when the pressurizing portions are positioned so as to face each other on a height corresponding to each of the plurality of chemical liquid transfer lines However,
The grooves on each of the heights are arranged such that all of the pressing portions of the pressing portions with respect to the plurality of chemical liquid transfer lines are released or at least one of the plurality of chemical liquid transfer lines is pressed by the pressing portion according to the rotation angle of the rotating member. Chemical fluid flow control device. The method of claim 3,
Wherein the pressing portion is provided with one and is linear and disposed along the height of the rotary member,
Wherein the plurality of groove portions are provided on the respective heights so as to be spaced from each other in the inner circumferential direction of the valve chamber,
The first groove portions selected from the groove portions on the respective heights are arranged so as to lie on the same straight line along the height of the rotary member such that when the pressing portion is positioned to face the first groove portion on the same straight line, Wherein the line is opened while all the pressure by the pressing portion is released. The method of claim 4,
Three chemical transfer lines are provided,
The grooves are provided at four first, second, and third heights of different heights,
The first to fourth grooves of the first height are arranged at 90 degree intervals,
The second groove portion having the second height lower than the first height is disposed at a position spaced 45 degrees from the first groove portion having the second height and the third and fourth groove portions having the second height are disposed at the second height, 1 and the second groove portion, respectively,
And the second to fourth grooves having the third height lower than the second height are sequentially disposed at a position spaced apart from the first groove of the third height by a distance of 45 degrees in a direction away from the second groove of the second height A chemical liquid flow rate control device. The method of claim 4,
Wherein the first groove portions on the same straight line are provided with inlet-draw-out holes for respectively drawing and withdrawing the plurality of chemical liquid transfer lines. The method of claim 3,
Wherein the pressurizing portion includes a pressurizing roller that presses the plurality of chemical liquid transfer lines respectively and rotates by friction with the chemical liquid transfer line when the rotary member rotates. The method according to claim 1,
Wherein the rotary member is cylindrical and a transfer line inserting groove portion into which the plurality of chemical liquid transfer lines are respectively inserted is provided along an outer periphery. The method according to claim 1,
Further comprising a chemical liquid flowmeter for dividing the chemical liquid supplied from the chemical liquid supply source into the plurality of chemical liquid transfer lines at a different flow rate or introducing the chemical liquid at a different flow rate to only a part of the chemical liquid. The method of claim 9,
Wherein the housing has an instrument chamber for accommodating the chemical liquid branching mechanism and the chemical liquid joining mechanism,
And a draw-out opening for withdrawing and withdrawing the plurality of chemical liquid transfer lines is provided between the valve chamber and the mechanism chamber. The method according to claim 1,
Further comprising rotating angle determining means for determining a position between the valve chamber and the rotating member so as to rotate the rotating member according to a predetermined angle. [12] The apparatus of claim 12,
A plurality of engagement grooves provided along the circumferential direction so as to be spaced apart from each other on the bottom surface of the rotary member;
And an engaging member provided on the bottom of the valve chamber in a cantilever manner so as to be able to move and deflect for separation and approach from the bottom surface of the rotary member and to be engaged with any one of the engaging groove portions according to the rotation angle of the rotary member. And a control unit for controlling the flow rate of the chemical liquid.

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