JP2011156449A - Liquid mixing mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid mixing mechanism which can finely control, by a simple operation, a mixing amount when liquid passing through a pipe is mixed with other liquid such as a chemical. <P>SOLUTION: The liquid mixing mechanism 10 mixes the liquid 12 passing through the pipe 11 with other liquid 13 and is provided with one connection pipe part 21 and another connection pipe part 22 communicating with the pipe 11. The mechanism 10 is provided with a first taper hole 24 which becomes narrower along the flow direction of the liquid 12 and a second taper hole 25 which communicates with the first taper hole 24 and becomes wider along the flow direction of the liquid 12, and is also provided with an introducing path for the mixed liquid, which communicates with the taper surface of the second taper hole 25 and introduces other liquid 14. Further, the mechanism 10 has an introducing amount adjusting mechanism for adjusting the introducing amount of the other liquid 13 introduced from the introducing path for the mixed liquid. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a liquid mixing mechanism that enables a desired amount of another liquid mixture such as a chemical solution to be mixed with a liquid passing through a supply pipe when supplying a liquid such as animal drinking water.

  For example, when raising pigs, chickens, dairy cows, etc., water-soluble drugs such as antibacterial substances and vitamins are mixed with liquids such as drinking water for disease prevention and nutritional management. Conventionally, a liquid mixing mechanism has been developed to mix the liquid mixture of the water-soluble drug.

As a conventional liquid mixing mechanism, for example, Patent Document 1 discloses.
That is, the liquid mixing mechanism of Patent Document 1 connects a branch line for introducing a water-soluble drug to a drinking water distribution piping system, and arranges a mixing valve to inject a predetermined amount of chemical solution. is there.

  As the mixing valve, an outer frame body formed with a liquid inflow hole and a liquid discharge hole connected to a liquid passage piping system, and a valve body rotatably housed and loaded in the outer frame body, Consists of. In the valve body, a first liquid passage hole and a second liquid passage hole are formed substantially in parallel with the rotation center therebetween. By rotating the valve body, the first liquid passage hole and the second liquid passage hole are switched so as to be able to communicate with the liquid inflow hole and the liquid discharge hole.

  The first liquid passage hole is a straight hole. The second liquid passage hole is formed in a tapered shape in which the hole diameter at the substantially central portion is the smallest. Furthermore, a mixed liquid introduction hole for introducing another liquid (mixed liquid) such as a drug is formed at an appropriate position on the hole wall closer to the liquid discharge hole than the substantially central portion of the second liquid passage hole. The mixed liquid introduction hole communicates with a liquid tank via a liquid supply tube.

  The first liquid passage hole is used when only the liquid is supplied. On the other hand, the second liquid passage hole is used when another liquid (mixed liquid) is mixed with the liquid. That is, when the liquid passes through the narrowest hole diameter at the substantially central portion, the fluid pressure is lowered and a pressure difference is generated. Due to this pressure difference, the liquid mixture in the liquid tank is sucked through the liquid supply tube and the liquid mixture introduction hole, and mixed with the liquid passing through the second liquid passage hole.

Japanese Patent No. 3179541

  In the liquid mixing mechanism of Patent Document 1, by rotating the valve body, the first liquid passage hole having a straight hole and the second liquid passage hole having the narrowest diameter of the taper shape are connected to the liquid inflow hole. Although the liquid discharge hole can be switched so as to be able to communicate with the liquid discharge hole, the mixing amount of the mixed liquid depends on the flow rate of the liquid passing through the second liquid passage hole. When the liquid in the liquid passage piping system has a constant flow rate, the pressure difference before and after the narrowest hole diameter of the second liquid passage hole is constant, so the flow rate of the sucked mixed liquid is also constant.

  Therefore, when it is desired to adjust the mixing amount of the mixed liquid, for example, it is necessary to adjust the liquid flow rate of the piping system by adjusting the supply amount from the liquid supply source. However, in adjusting the flow rate of the liquid supply source, it is not easy to finely adjust the mixing amount of the mixed liquid.

  The present invention has been made in view of the above, and provides a liquid mixing mechanism capable of finely controlling a mixing amount when mixing other liquids such as a chemical liquid with a liquid passing through a pipe with a simple operation. This is the issue.

  In order to solve the above problems, a liquid mixing mechanism according to the present invention is a liquid mixing mechanism that mixes another liquid with a liquid passing through a pipe, and communicates with the pipe in order from the upstream side in the liquid flow direction. A main flow path having a first taper hole narrowing along the second taper hole communicating with the first taper hole and expanding along the flow direction, and a mixed liquid communicating with the main flow path and introducing another liquid And an introduction amount adjusting mechanism for adjusting an introduction amount of the other liquid introduced from the mixed liquid introduction passage into the main passage. The mixed liquid introduction path is preferably provided so as to communicate with a tapered surface of a second tapered hole constituting the main flow path.

  The introduction amount adjusting mechanism includes an apparatus main body having a main flow path including the first tapered hole and the second tapered hole, and a base portion that supports the apparatus main body, and the mixed liquid introduction path is the apparatus. A first introduction hole formed in the main body and communicating with the tapered surface of the second tapered hole; and the other liquid formed in the base portion and capable of communicating with the first introduction hole of the apparatus main body and mixed. And a second introduction hole communicated with the supply source, and the apparatus main body is located with respect to the base portion so that an overlapping area between the first introduction hole and the second introduction hole can be adjusted. It is preferable to have a structure that is provided so as to be rotatable.

  Further, in the apparatus main body having the main flow path including the first tapered hole and the second tapered hole, the mixed liquid introducing path is provided so as to communicate with the tapered surface of the second tapered hole, and the introduction amount It is preferable that the adjustment mechanism has a structure that adjusts an area through which the mixed liquid can pass in the mixed liquid introduction path. The introduction amount adjustment mechanism is provided in the apparatus main body, and includes a pin member that can advance and retreat in the mixed liquid introduction path, and can adjust the amount of passage of the mixed liquid by adjusting the advance and retreat amount of the pin member. It is more preferable that the configuration is as follows.

  It is preferable to further include a flow rate adjusting valve that is provided in the main channel and adjusts the flow rate of the liquid flowing in the main channel. In this case, the flow rate adjusting valve includes a valve shaft having a valve hole formed through in the radial direction, the valve hole is provided in the main flow path, and the valve shaft is rotated to rotate the valve shaft. It is preferable that the flow rate of the liquid passing through the valve hole be adjusted.

  According to the present invention, the liquid pressure increases when the liquid passes through the first tapered hole of the main flow path. As the liquid passes through the second taper hole, the liquid pressure decreases. Due to the pressure difference, another liquid is sucked from the mixed liquid introduction path and mixed with the liquid passing through the second tapered hole. At this time, since the introduction amount of the other liquid can be adjusted by the introduction amount adjusting mechanism, it can be controlled without adjusting the liquid flow rate of the liquid passing through the main flow path.

  Further, when the liquid flow rate of the main channel is adjusted by the flow rate adjusting valve, the liquid pressure flowing from the first taper hole to the second taper hole in the main channel can be easily adjusted. Can be finely controlled with a simple operation. By combining the flow rate adjustment of the main flow path and the adjustment by the introduction amount adjustment mechanism described above, the mixing amount of other liquids can be controlled more delicately.

FIG. 1 is a perspective view including a main part fracture portion showing a liquid mixing mechanism according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view showing the liquid mixing mechanism of the embodiment. FIG. 3 is an exploded configuration diagram of the liquid mixing mechanism of the embodiment. FIG. 4 is a plan view showing an overlapping state of the first introduction hole of the apparatus main body and the second introduction hole of the base portion in the embodiment. (A) is a plan view showing a fully open state, (B) is a plan view showing a substantially half-open state, and (C) is a plan view showing a fully closed state. 5A and 5B are diagrams showing a liquid mixing mechanism according to another embodiment of the present invention, in which FIG. 5A is a plan view, FIG. 5B is a cross-sectional view along CC ′ in FIG. B) is a cross-sectional view taken along the line AA ′, and FIG. 4D is a cross-sectional view taken along the line BB ′ of FIG. FIG. 6 is a diagram for explaining the operation of the liquid mixing mechanism of the other embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The liquid mixing mechanism 10 according to the present embodiment is provided connected to a pipe 11 as shown in FIGS. 1 to 3. The pipe 11 supplies, for example, a liquid 12 such as livestock drinking water to a livestock drinking fountain (water receiving tank). The liquid mixing mechanism 10 includes another liquid 13 in the liquid flowing through the pipe 11. (Hereinafter, referred to as “mixed liquid” in this embodiment).

  Specifically, an apparatus main body 20 provided with a main flow path (consisting of a first tapered hole 24 and a second tapered hole 25 described later) that communicates with the pipe 11 and allows the liquid 12 to pass therethrough, and the apparatus main body 20. The valve shaft 30 is provided so as to be freely rotatable, and a base portion 40 that supports the apparatus main body 20 so as to be rotatable. Since the other liquid 13 cannot be taken in the place where the pressure of the pipe 11 is high, the liquid mixing mechanism 10 is connected to the main flow path near the outlet of the pipe 11 that discharges the liquid 12 to the drinking fountain (water receiving tank). .

  The mixed liquid 13 is, for example, a water-soluble drug such as an antibacterial substance or a vitamin preparation for disease prevention or nutrition management for livestock.

  The apparatus main body 20 communicates with the pipe 11 and flows between the connection pipe portions 21 and 22 projecting on both sides, one connection pipe portion 21 and the other connection pipe portion 22 in order from the upstream side. A main flow path is formed that includes a first tapered hole 24 that narrows along the direction, and a second tapered hole 25 that communicates with the first tapered hole 24 and expands along the flow direction.

  Furthermore, a valve shaft hole 23 is provided between the first tapered hole 24 and the second tapered hole 25 and penetrates in the vertical direction of the apparatus body 20. The valve shaft hole 23 has such a shape that the valve shaft 30 can be inserted from the lower side in FIG. 3, and the upper part has a small diameter, the middle has a medium diameter, and the lower part has a large diameter.

  Furthermore, the apparatus main body 20 includes a first introduction hole 26 that communicates with the tapered surface of the second tapered hole 25 that constitutes the main flow path. The first introduction hole 26 is for introducing the mixed liquid 13 and communicates downward from the lower tapered surface of the second tapered hole 25 in FIGS. 2 and 3 to the lower surface of the apparatus main body 20. .

  The valve shaft 30 is rotatably disposed in the valve shaft hole 23, and has a valve hole 31 at a position where it can communicate with the first tapered hole 24 and the second tapered hole 25, which are positions facing the main flow path. Have. The valve shaft 30 is a flow rate adjusting valve, and by rotating the valve shaft 30, the overlapping area of the first tapered hole 24 and the valve hole 31 can be changed to adjust the flow rate of liquid passing through the valve hole 31. .

  Further, the valve shaft 30 has a shape to be inserted into the valve shaft hole 23 from the lower side in FIGS. 2 and 3, the upper portion is a small diameter portion 32, the middle is a medium diameter portion 33, and the lower portion is a large portion. A diameter portion 34 is formed. A knob portion 35 for rotating the valve shaft 30 is formed on the upper end side of the small diameter portion 32. 2 and 3, when the valve shaft 30 is inserted into the valve shaft hole 23 from the lower side, the knob portion 35 protrudes upward from the upper end of the valve shaft hole 23, and the lower end side of the large diameter portion 34 is the valve shaft shaft. This is a configuration that protrudes downward from the lower end of the hole 23.

  The valve hole 31 is provided in the medium diameter portion 33. A groove portion 36 is formed on the outer peripheral surface of the medium diameter portion 33 so as to be located above the valve hole 31. A packing material 38 such as an O-ring is attached to the groove 36. On the other hand, a groove portion 37 is also formed on the outer peripheral surface of the large diameter portion 34. A packing material 39 such as an O-ring is attached to the groove portion 37. The packing materials 38 and 39 prevent the liquid 12 flowing through the main flow path from leaking from the gap between the valve shaft hole 23 and the valve shaft 30.

  The base portion 40 has a shaft hole 41 for inserting the lower end side of the large diameter portion 34 of the valve shaft 30 on the upper surface thereof. When the apparatus main body 20 is mounted on the upper surface of the base portion 40, the large diameter portion 34 of the valve shaft 30 protruding downward from the lower surface of the apparatus main body 20 is inserted into the shaft hole 41 of the base portion 40. As a result, the valve shaft 30 is rotatable at the predetermined position. Further, the apparatus main body 20 is also attached to the base portion 40 so as to be rotatable around the valve shaft 30.

  In the present embodiment, the valve shaft 30 is also used as the rotation shaft of the apparatus main body 20 with respect to the base portion 40. As a result, the structure can be simplified, contributing to cost reduction.

  The base portion 40 has a second introduction hole 42 communicating with the first introduction hole 26 of the apparatus main body 20. The second introduction hole 42 introduces the mixed liquid 13, which is another liquid such as a medicine, into the first introduction hole 26. Although the protrusion 43 is provided on the lower surface of the base portion 40, the second introduction hole 42 is formed to penetrate downward from the upper surface of the base portion 40 at the position where the protrusion 43 is provided. One end of a liquid supply tube 44 is connected to the protrusion 43, and the other end is immersed in the mixed liquid 13 stored in the liquid tank 60.

  Further, a substantially circular groove 46 is provided on the upper surface of the base portion 40 so as to surround the outside of the second introduction hole 42, and a packing material 47 such as an O-ring is attached to the groove 46. The packing material 47 prevents the mixed liquid 13 from leaking from between the first introduction hole 26 and the second introduction hole 42.

  In the present embodiment, the first introduction hole 26 and the second introduction hole 42 constitute a mixed liquid introduction path. The apparatus main body 20 and the base portion 40 that rotatably supports the apparatus main body 20 constitute an introduction amount adjusting mechanism. By rotating the apparatus main body 20 around the valve shaft 30 with respect to the base portion 40, the overlapping area of the first introduction hole 26 and the second introduction hole 42 changes. Thereby, the supply amount of the mixed liquid 13 is adjusted.

  Further, as shown in FIGS. 1 and 4, the apparatus main body 20 is provided with a substantially arc-shaped long hole 27 on a concentric circle of rotation with respect to the base portion 40. In the present embodiment, the two long holes 27 are provided so as to penetrate the upper surface and the lower surface of the apparatus main body 20 at positions facing each other across the rotation center. There is no particular limitation.

  Further, the apparatus main body 20 is provided with a stopper member 28 that is in contact with the inner surface of the elongated hole 27 and restricts the rotation range of the apparatus main body 20. In the present embodiment, a bolt 28 a is used as the stopper member 28, and a function for locking and unlocking the apparatus main body 20 to the base portion 40 is provided. That is, the two bolts 28 a are inserted into the washer 28 b, the two bolts 28 a are inserted into the two long holes 27, and screwed into screw holes (not shown) provided on the upper surface of the base portion 40.

  In the state where the two bolts 28a are loosened, the apparatus main body 20 is unlocked with respect to the base portion 40, and can rotate. The rotation range of the apparatus main body 20 is regulated by the inner wall surface of the long hole 27 coming into contact with the bolt 28a. The rotation range includes a range in which the overlapping state of the first introduction hole 26 and the second introduction hole 42 is from fully open to fully closed.

  In order to make the overlapping state easy to understand, in this embodiment, as shown in FIG. 4, a reference groove 29 serving as an alignment reference is formed on the side surface of the apparatus main body 20. On the other hand, three scale lines 48a, 48b, and 48c are provided on the upper surface of the base portion 40.

  For example, in FIG. 4A, the overlapping area state of the first introduction hole 26 and the second introduction hole 42 is fully open. At this time, the two bolts 28a are located at substantially the center positions of the long holes 27. The reference groove 29 is located on the scale line 48b.

  In FIG. 4B, the apparatus main body 20 is slightly rotated from the position in FIG. 4A in the clockwise direction. The overlapping area state of the first introduction hole 26 and the second introduction hole 42 is substantially half open (1/2 compared to full open). At this time, the reference groove 29 is located between the scale line 48b and the scale line 48c.

  In FIG. 4C, the apparatus main body 20 is rotated in the clockwise direction from the position of FIG. At this time, the two bolts 28 a are in contact with the long holes 27. The overlapping area state of the first introduction hole 26 and the second introduction hole 42 is fully closed. The reference groove 29 is located on the scale line 48c.

  When the apparatus main body 20 is rotated counterclockwise from the position shown in FIG. 4A, the reference groove 29 is positioned between the scale line 48b and the scale line 48a.

  Further, as shown in FIGS. 1 and 2, the base portion 40 includes, for example, four bolts 49 as fixing tools on the upper surface of a substantially cylindrical cap attachment 50 attached to the cap mounting opening 61 of the liquid tank 60. It is fixed with.

The operation of the liquid mixing mechanism 10 having the above configuration will be described.
The knob portion 35 of the valve shaft 30 is rotated so that the valve hole 31 communicates with the first tapered hole 24 and the second tapered hole 25. Further, the apparatus main body 20 is rotated around the valve shaft 30 with respect to the base portion 40 so that the first introduction hole 26 and the second introduction hole 42 communicate with each other.

  The liquid 12 in the pipe 11 flows into the one connecting pipe portion 21 and increases in liquid pressure when passing through the first tapered hole 24. Further, when the liquid 12 passes through the valve hole 31 of the valve shaft 30 and passes through the second tapered hole 25, the liquid pressure decreases and flows out from the other connection pipe portion 22 to the pipe 11.

  Therefore, a pressure difference is generated in the liquid 12 flowing through the first tapered hole 24 and the second tapered hole 25. Due to the pressure difference, a negative pressure is generated in the first introduction hole 26 communicating with the tapered surface of the second tapered hole 25. As a result, the mixed liquid 13 in the liquid tank 60 is sucked through the first introduction hole 26, the second introduction hole 42 and the liquid supply tube 44 and mixed with the liquid 12 passing through the second tapered hole 25. .

  The amount of the mixed liquid 13 mixed with the liquid 12 depends on the pressure difference between the first tapered hole 24 and the second tapered hole 25. In the present embodiment, the flow rate of the liquid flowing into the valve hole 31 is changed by rotating the knob portion 35 of the valve shaft 30 to change the overlapping area of the valve hole 31 and the first taper hole 24 constituting the flow rate adjusting valve. Can be adjusted easily. When the liquid flow rate changes, the liquid pressure flowing into the second tapered hole 25 changes. As a result, the mixing amount of the mixed liquid 13 can be easily adjusted.

  Further, as described above, the mixing amount of the mixed liquid 13 is such that the apparatus main body 20 constituting the introduction amount adjusting mechanism is rotated with respect to the base portion 40 so that the first introduction hole 26 and the second introduction hole 42 overlap. Regardless of adjusting the area, the valve shaft 30 can be rotated and the liquid flow rate in the main line can be adjusted.

Next, a change in the mixing amount of the mixed liquid 13 will be described based on test examples.
The overlapping area state of the valve hole 31 and the first taper hole 24 is represented by “ratio of the throttle with respect to the liquid channel throttle fully opened”. Further, the overlapping area state of the first introduction hole 26 and the second introduction hole 42 is represented by “ratio of the restriction with respect to the full opening of the mixed liquid introduction path restriction”. In this test example, the inner diameter of the valve hole 31 in the fully opened liquid channel restrictor is 4.5 mm. On the other hand, the inner diameters of the first introduction hole 26 and the second introduction hole 42 when the mixed liquid introduction path restriction is fully opened are 1.8 mm.

First, the amount of liquid flowing out from the other connecting pipe part 22, that is, the amount of liquid mixture 13 by adjusting the liquid supply amount of the pipe 11 will be described.
If the liquid flow path throttle is fully open and the mixed liquid introduction path throttle is fully open,
When the amount of liquid flowing out from the other connection pipe portion 22 is 4 L (liter) / min, the mixing amount of the mixed liquid 13 is 14 mL / min.
When the amount of liquid flowing out from the other connection pipe portion 22 is 5 L (liter) / min, the mixing amount of the mixed liquid 13 is 82 mL / min.
When the amount of liquid flowing out from the other connection pipe portion 22 is 6 L (liter) / min, the amount of mixture of the mixed liquid 13 is 136 mL / min.

  Further, since the mixing amount of the mixed liquid 13 differs depending on the liquid flow path throttle state and the mixed liquid introduction path throttle state, the case where the liquid flow path throttle is changed and the case where the mixed liquid introduction path throttle is changed. investigated.

First, the mixing amount of the mixed liquid 13 when the liquid flow path throttle state is changed will be described in the case where the liquid amount flowing out from the other connection pipe portion 22 is 5 L (liter) / min.
As described above, when the liquid flow path throttle is fully opened and the mixed liquid introduction path throttle is fully open, the mixing amount of the mixed liquid 13 is 82 mL / min.
Compared to this,
When the liquid flow path throttle is 1/4 (the opening area is ¾ of the fully open position) and the mixed liquid introduction path throttle is fully open, the mixing amount of the mixed liquid 13 is 122 mL / min.
When the liquid flow path restriction is 1/2 (opening area is 1/2 of full opening) and the mixed liquid introduction path restriction is full open, the mixing amount of the mixed liquid 13 is 136 mL / min.

Next, the mixing amount of the mixed liquid 13 when the mixed liquid introduction path throttle state is changed will be described in the case where the amount of liquid flowing out from the other connection pipe portion 22 is 5 L (liter) / min.
As described above, when the liquid flow path throttle is fully opened and the mixed liquid introduction path throttle is fully open, the mixing amount of the mixed liquid 13 is 82 mL / min.
Compared to this,
When the liquid flow path restriction is fully open and the mixed liquid introduction path restriction is 1/2 (the opening area is 1/2 of the full opening), the mixing amount of the mixed liquid 13 is 48 mL / min.
When the liquid flow passage restriction is fully open and the mixed liquid introduction passage restriction is 3/4 (the opening area is 1/4 of the full opening), the mixing amount of the mixed liquid 13 is 34 mL / min.

  From the above, in the liquid mixing mechanism 10 of the embodiment of the present invention, the mixing amount of the mixed liquid 13 is adjusted by adjusting the introduction amount adjusting mechanism, that is, the apparatus main body 20 is rotated with respect to the base portion 40, By adjusting the overlapping area of the first introduction hole 26 and the second introduction hole 42, it is possible to finely control by a simple operation without adjusting the liquid flow rate of the main flow path.

  Further, the liquid flow rate in the main flow path can be easily adjusted by the flow rate adjusting valve, that is, by adjusting the overlapping area of the valve hole 31 and the first tapered hole 24 by rotating the valve shaft 30. As a result, the mixing amount of the mixed liquid 13 can be finely controlled with a simple operation.

  In addition, the mixing amount of the mixed liquid 13 can be controlled more delicately by combining both the flow rate adjustment of the main flow path and the adjustment by the introduction amount adjusting mechanism.

  For example, when only the liquid 11 such as drinking water is used for livestock, the overlap area between the first introduction hole 26 and the second introduction hole 42 only needs to be fully closed. Can be adjusted.

  5 and 6 are diagrams for explaining a liquid mixing mechanism 100 according to another embodiment of the present invention. In addition, the same member as the said embodiment is shown with the same code | symbol.

  As shown in FIG. 5, in this embodiment, the apparatus main body 20 is formed with the first tapered hole 24 and the second tapered hole 25, and the valve shaft 30 that is a flow rate adjusting valve for the main flow path is provided. It is the same as that of the said embodiment.

  In the present embodiment, as shown in FIG. 5D, the mixed liquid introduction path 70 is formed so as to penetrate from the side surface of the apparatus main body 20 toward the second tapered hole 25, and the mixed liquid introduction hole 70 is formed in the mixed liquid introduction hole 70. One end of a liquid supply tube 44 whose other end is connected to a liquid tank 60 in which a mixed liquid such as a chemical liquid is stored is connected.

  The introduction amount adjusting mechanism 80 includes a pin member 81 disposed in a through hole penetrating from the upper surface of the apparatus main body 20 toward the mixed liquid introduction hole 70, and a screw member 82 provided at the rear end of the pin member 81. It is equipped with. When the screw member 82 is rotated, the tip of the pin member 81 enters the mixed liquid introduction hole 70. Therefore, by rotating the screw member 82 and adjusting the amount of advancement / retraction of the tip portion of the pin member 81 into the mixed liquid introduction hole 70, the area where the mixed liquid can pass through the mixed liquid introduction hole 70 can be adjusted.

  The liquid mixing mechanism 100 of the present embodiment has a configuration in which the introduction amount adjusting mechanism 80 is more compact than the above embodiment. Therefore, for example, as shown in FIG. 6, even if it is connected to the drinking water pipe 11 protruding into the drinking fountain (water receiving tank) 200, it fits in the drinking fountain (water receiving tank) 200 in a compact manner. For this reason, the liquid tank 60 can also be arrange | positioned not only in the space below the drinking fountain (water receiving tank) 200 but in the drinking fountain (water receiving tank) 200.

  According to the present embodiment, for example, drinking water passes through the second tapered hole 25 through the first tapered hole 24 which is the main flow path and the valve hole 31 of the valve shaft 30, but at that time, the mixed liquid Other liquids such as drugs and vitamins are mixed from the introduction hole 70. And the drinking water with which this other liquid was mixed is discharged to the drinking fountain (water receiving tank) 200 from the discharge part 11a connected to the exit of the 2nd taper hole 25. FIG. The drinking fountain (water receiving tank) 200 is provided with a ball tap 210, and the drinking water is discharged from the discharge portion 11a until a predetermined water level is reached. When a predetermined water level is reached, the discharge of drinking water is stopped by the action of the ball tap 210. When the livestock drops only the drinking water level, the drinking water is discharged again, and the operation is repeated thereafter. Also in this embodiment, similarly to the above-described embodiment, the introduction amount of the mixed liquid can be easily adjusted by adjusting the introduction amount adjusting mechanism 80. Moreover, since the supply amount of drinking water etc. can also be adjusted by rotating the valve shaft 31 which is a flow regulating valve, it is possible to finely control the mixing amount of other liquids by adjusting both. is there.

10 Liquid mixing mechanism 11 Pipe 12 Liquid 13 Mixed liquid (other liquids)
DESCRIPTION OF SYMBOLS 20 Apparatus main body 21 One connection pipe part 22 The other connection pipe part 23 Valve shaft hole 24 1st taper hole 25 2nd taper hole 26 1st introduction hole 30 Valve shaft 31 Valve hole 35 Knob part 40 Base part 42 2nd introduction Hole 60 Liquid tank 70 Mixed liquid introduction hole 80 Introduction amount adjustment mechanism 81 Pin member

Claims (7)

A liquid mixing mechanism for mixing other liquid with liquid passing through a pipe,
A main flow path that includes a first tapered hole that communicates with the pipe and narrows in order from the upstream side along the flow direction of the liquid, and a second tapered hole that communicates with the first tapered hole and expands along the flow direction; ,
A mixed liquid introduction path that communicates with the main flow path to introduce another liquid;
A liquid mixing mechanism comprising: an introduction amount adjusting mechanism for adjusting an introduction amount of the other liquid introduced from the mixed liquid introduction passage into the main passage.   The liquid mixing mechanism according to claim 1, wherein the mixed liquid introduction path is provided so as to communicate with a tapered surface of a second tapered hole constituting the main flow path. The introduction amount adjusting mechanism includes an apparatus main body having a main flow path including the first tapered hole and the second tapered hole, and a base portion supporting the apparatus main body,
The mixed liquid introduction path is formed in the apparatus main body, and is formed in the base portion and the first introduction hole communicating with the tapered surface of the second tapered hole, and can communicate with the first introduction hole of the apparatus main body. And having a second introduction hole communicated with the supply source of the other liquid to be mixed,
3. The liquid mixing mechanism according to claim 1, wherein the apparatus main body is rotatably provided with respect to the base portion so that an overlapping area between the first introduction hole and the second introduction hole can be adjusted. In the apparatus main body having the main flow path including the first tapered hole and the second tapered hole, the mixed liquid introduction path is provided to communicate with the tapered surface of the second tapered hole,
The liquid mixing mechanism according to claim 1, wherein the introduction amount adjusting mechanism has a structure that adjusts an area through which the mixed liquid can pass in the mixed liquid introduction path.   The introduction amount adjustment mechanism is provided in the apparatus main body, and includes a pin member that can advance and retreat in the mixed liquid introduction path, and can adjust the amount of passage of the mixed liquid by adjusting the advance and retreat amount of the pin member. The liquid mixing mechanism according to claim 4.   The liquid mixing mechanism according to claim 1, further comprising a flow rate adjusting valve that is provided in the main flow path and adjusts a flow rate of the liquid flowing in the main flow path.   The flow rate adjusting valve is composed of a valve shaft having a valve hole formed through in a radial direction, the valve hole is provided in the main flow path, and the valve shaft is rotated by rotating the valve shaft. The liquid mixing mechanism according to claim 6, wherein the liquid mixing mechanism is configured to adjust a flow rate of the passing liquid.

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