JP2005333838A - Liquid fertilizer mixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid fertilizer mixing device holding the mixture ratio of a liquid fertilizer constant even when an amount of water varies. <P>SOLUTION: This liquid fertilizer mixing device 10 wherein the liquid fertilizer 38 sucked from a liquid fertilizer container to water 39 in a flow pathway is mixed with the water at a prescribed ratio, comprises a cylindrical body 10A provided with a joint part 14 fit to the openings of the flow pathway 13 and the liquid fertilizer container, and has the following structure: a throttle path 15 is formed at a midpoint of the flow pathway; a high-pressure introduction communicating pathway 20 is formed to openly communicate with an upper part space 33 of the liquid fertilizer container at an upper-stream-side flow pathway 13a so as to make the throttle path in-between; a liquid-suction path 21 openly communicating with a bottom part space 32 of the liquid fertilizer container toward a lower-stream-side flow pathway 13b is provided with a filter member 25 at its lower end part; an air-release communicating pathway 22 openly communicating with the upper part space 33 of the liquid fertilizer container; and an opening end part of the liquid fertilizer container at a joint part is provided with a water transmission means using a waveform washer 24 for introducing the water dropped down from the container side openings of the high-pressure introduction communicating pathway 20 and the air-release communicating pathway 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a liquid fertilizer that sucks liquid fertilizer from a liquid fertilizer container with the pressure of water flowing through a water channel connected to a pressurized water source such as a pump or water supply, mixes it with the water in the water channel at a predetermined ratio, and sprays it on a plant as a liquid fertilizer dilution. It relates to a mixing device.

As one type of this type of mixing device, Japanese Patent Application Laid-Open No. 2001-245515 discloses that a hollow joint is provided on the outer periphery of a pipe, and a suction hole is formed through the pipe outer periphery in the joint. A suction tube is connected to the hole, an air hole is formed through the side surface of the coupling portion, the coupling portion is connected to the mouth of the liquid fertilizer container, and the upper space of the liquid fertilizer container is communicated with the atmosphere. Describes a liquid fertilizer mixing device configured to connect a bottom space of a liquid fertilizer container to a pipe via a pipe.
This mixing apparatus is used by connecting one end opening of a pipe to a water tap and the other end opening to a watering nozzle. When tap water is flowed with the tap open, a pressure difference is generated between the upper space of the liquid fertilizer container that communicates with the atmosphere and the bottom space of the container that communicates with the pipe through which tap water flows. Is sucked into the pipe and mixed into the tap water. And the liquid manure diluted with the tap water is sprayed to a plant from a watering nozzle.
JP 2001-245515 A

In the conventional liquid fertilizer mixing apparatus described above, the liquid fertilizer in the container is sucked by the pressure difference between the atmospheric pressure and the pressure of tap water flowing in the pipe. Therefore, since the liquid fertilizer mixing amount changes according to the amount of water supplied from the water tap, that is, how the faucet opens, the concentration of the liquid fertilizer dilution is not constant.
The present invention has been made in view of such problems, and an object thereof is to provide a liquid fertilizer mixing apparatus capable of keeping the liquid fertilizer mixing ratio constant even when the amount of water changes.

In order to achieve the above object, the present invention sucks liquid manure from a liquid fertilizer container with the pressure of pressurized water flowing through a flow channel connected to a pressurized water source such as a pump or a water tap and mixes it with water in the flow channel at a predetermined ratio. A liquid fertilizer mixing apparatus, comprising a cylindrical body provided with a connection portion fitted to a flow channel and a mouth of a liquid fertilizer container, forming a throttle passage in the middle of the flow channel, one end of the connection portion being a throttle passage A high-pressure introduction communication path that opens to the upper space of the liquid fertilizer container with the other end connected to the connecting portion, and one end that opens to the downstream flow path of the throttle passage and the other end of the liquid fertilizer container. A liquid manure suction passage that opens to the bottom space, and an air vent communication passage that has one end opened to the downstream flow channel of the throttle passage and the other end opened to the upper space of the liquid fertilizer container are formed.
Preferably, the liquid fertilizer container connecting portion is provided with water guiding means for guiding water dripped from the container side opening of the high pressure introduction communication path and the container side opening of the air vent communication path to the inner surface of the liquid fertilization container.
Preferably, a corrugated washer is attached to the end face of the liquid fertilizer container connecting portion in which the container side opening of the high pressure side communication path and the container side opening of the low pressure side communication path are formed as the water guiding means.
More preferably, a filter member is disposed in the liquid manure suction path.

In the liquid fertilizer mixing apparatus according to the present invention, the upstream side port of the throttle passage of the flow channel is connected to a pressurized water source such as a pump or a water tap, the downstream port of the throttle channel of the flow channel is connected to the watering nozzle, and the mouth of the liquid fertilizer container is connected. Connect the connection part. When pressurized water is caused to flow through the flow channel by opening a faucet or the like, the upper space of the liquid manure container communicated with the upstream flow channel on the upstream side of the throttle passage by the high-pressure introduction communication channel and the container communicated with the downstream flow channel on the downstream of the throttle channel by the liquid manure suction channel A pressure difference occurs between the bottom space and liquid fertilizer is sucked from the container bottom space through the liquid fertilizer suction passage into the flow channel, diluted by mixing with the water flowing through the flow channel, and the liquid fertilizer dilution is sprayed from the nozzle to the plant. Is done. When the pressurized water begins to flow, the water flows into the upper space of the liquid fertilizer container through the high pressure introduction communication passage, and the air in the upper space is discharged through the air vent communication passage into the flow channel downstream of the throttle passage, The upper space is filled with water.
According to the present invention, the liquid fertilizer in the liquid fertilizer container is sucked by the pressure difference between the upstream side and the downstream side of the throttle passage provided in the middle of the flow channel, so that the liquid fertilizer has a constant pressure difference regardless of the change in the amount of water in the flow channel. Can be sucked. For this reason, the mixing ratio of liquid manure can be kept constant. In addition, the air in the upper space of the liquid fertilizer container is discharged through the air vent communication passage, and the upper space is filled with water. For this reason, when the nozzle is closed, the water in the flowing water channel passes through the liquid fertilizer suction passage and passes through the liquid fertilizer container. The liquid fertilizer in the container can be prevented from flowing back into the bottom space or dropping into the upper space from the high-pressure introduction communication path or the air vent communication path. Accordingly, it is possible to prevent water from being mixed into liquid fertilizer having a specific gravity greater than that of water and diluting the liquid fertilizer concentration in the liquid fertilizer container.

Further, by providing the water guiding means, water dripped from the container side opening of the high pressure introduction communicating path and the container side opening of the air vent communicating path can be guided to the inner surface of the liquid fertilizer container, and water from both communicating paths is contained in the container. It can prevent still more reliably that liquid manure is dripped at liquid manure and is stirred.
Furthermore, by using a corrugated washer as the water guiding means, it is possible to prevent agitation of liquid fertilizer by dripping water at a low cost.
Further, by providing the filter member, the liquid manure suction passage is prevented from being clogged, and can be used for a long time.

In order to carry out the present invention, a liquid fertilizer mixing device that sucks liquid manure from a liquid fertilizer container with the pressure of pressurized water flowing through a flow channel connected to a pressurized water source such as a pump or a water tap and mixes it with water in the flow channel at a predetermined ratio The best form of this consists of a cylindrical body provided with a connecting part fitted to the flow channel and the mouth of the liquid fertilizer container. Then, a throttle passage is formed in the middle of the flow channel.
In addition, a high-pressure introduction communication passage that opens to the upper space of the liquid fertilizer container is formed to the upstream flow channel across the throttle passage, and an opening communicates to the bottom space of the liquid fertilizer container to the downstream flow channel and a filter is formed at the lower end. A liquid manure suction passage in which members are arranged and an air vent communication passage that opens to communicate with the upper space of the liquid fertilizer container are formed.
Further, water guiding means using a corrugated washer for guiding water dripped from the container side opening of the high-pressure introduction communicating path and the air vent communicating path to the inner surface of the liquid fertilizing container is provided at the liquid fertilizer container opening portion of the connecting portion.

  The present invention will be described below with reference to the drawings. FIG. 1 shows a liquid fertilizer mixing apparatus 10 according to an embodiment of the present invention. This mixing apparatus includes a cylindrical body 10 </ b> A, a corrugated washer 24, and a liquid manure suction tube 23.

  The cylindrical body 10A has an inlet port 11 and an outlet port 12 formed at both ends, a flow channel 13 communicating with both ports is formed inside, and a connecting portion 14 connected to the mouth 31 of the liquid fertilizer container 30 is provided in the middle. Has been.

  A throttle passage 15 is formed in the middle of the flow channel 13. The connecting portion 14 is formed with a fitting portion 16 that closely fits the mouth 31 of the liquid fertilizer container 30, and a tube connecting portion 17 to which the liquid manure suction tube 23 is connected is formed at the center of the front end surface 16 a of the fitting portion 16. It is installed. A ring groove 18 is formed in the base end portion 16 b of the fitting portion, and an O-ring 19 is attached to the ring groove 18.

  A high pressure introduction communication path 20, a liquid manure suction path 21, and an air vent communication path 22 are formed inside the connection portion 14. One end of the high-pressure introduction communication passage 20 opens to the upstream water flow passage 13 a of the throttle passage 15, and the other end opens to the tip surface 16 a of the fitting portion 16. The liquid fertilizer suction passage 21 includes a narrow diameter portion 21a and an enlarged diameter portion 21b. The narrow diameter portion 21a opens to the downstream water flow passage 13b of the throttle passage 15, and the enlarged diameter portion 21b opens to the distal end surface of the tube connection portion 17. ing. One end of the air vent communication passage 22 opens to the downstream water flow passage 13 b of the throttle passage 15, and the other end opens to the distal end surface 16 a of the fitting portion 16.

  As shown in FIG. 2, the corrugated washer 24 has an outer shape in which four fan-shaped pieces 24a are connected to form a substantially circular shape, and a hole 24b is formed at the center. Each sector piece 24a is gently curved upward. The corrugated washer 24 is attached by fitting the hole 24 b to the tube connecting portion 17 and connecting the liquid manure suction tube 23 to the connecting portion 17. The corrugated washer 24 is attached to the tube connecting portion 17 so that the sectoral piece 24 a faces the container 30 side opening end surface 20 a of the high pressure introduction communication path 20 and the container 30 side opening end surface 22 a of the air vent communication path 22.

  The liquid manure suction tube 23 has a required length so as to extend to the space near the bottom 32 of the container when the port 31 of the liquid manure container 30 is connected to the connecting portion 14. A filter member 25 is attached to the lower end of the tube 23. The filter member 25 captures impurities mixed in the liquid manure 38 and prevents the narrow diameter portion 21a of the liquid manure suction passage 21 from becoming clogged.

  The structure of the liquid fertilizer mixing apparatus 10 according to the present embodiment is as described above, and the usage method will be described below. The corrugated washer 24 is attached, the liquid manure suction tube 23 is connected to the tube connection portion 17, and the connection portion 14 is fitted to the mouth 31 of the liquid fertilizer container 30. The O-ring 19 is in pressure contact with the mouth 31 of the container 30, and the mouth 31 of the container 30 is sealed by the connecting portion 14. The inlet port 11 is connected to the water tap side hose 36, and the watering nozzle side hose 37 is connected to the outlet port 12.

  When the tap tap is opened and pressurized tap water is allowed to flow into the flow channel 13 of the mixing device 10, the upper space 33 of the liquid fertilizer container 30 and the liquid manure suction channel 21 communicated with the flow channel 13 a upstream of the throttle channel 15 by the high pressure introduction communication channel 20. As a result, a pressure difference is generated between the container bottom 32 space communicated with the downstream flow channel 13 b on the downstream side of the throttle passage 15, and the liquid fertilizer 38 is sucked into the flow channel 13 through the liquid manure suction channel 21 from the space near the bottom 32 of the container 30. The water 39 flowing through the flow channel is mixed and diluted. Then, the liquid fertilizer dilution 40 is sprinkled from the nozzle to the plant.

  When pressurized tap water begins to flow, water 39 flows into the upper space 33 of the liquid fertilizer container 30 through the high pressure introduction communication passage 20, and the air in the upper space 33 passes through the air vent communication passage 22 and flows downstream in the throttle passage 15. 13b and the upper space 33 is filled with water 39.

  According to the mixing device 10 according to the present embodiment, the liquid fertilizer 38 in the liquid fertilizer container 30 is sucked by the pressure difference between the upstream side 13a and the downstream side 13b of the throttle passage 15 provided in the middle of the flowing water channel 13, so Regardless of the change in the amount of water 39, the liquid fertilizer 38 can be sucked with a constant pressure difference. For this reason, the mixing ratio of the liquid fertilizer 38 can be kept constant. In addition, the air in the upper space 33 of the liquid fertilizer container 30 is discharged through the air vent communication passage 22 and the upper space 33 is filled with water 39. Therefore, when the nozzle is closed, the water in the water flow path 13 flows into the liquid manure suction passage. The liquid fertilizer 38 in the container 30 can be prevented from flowing back into the bottom space 32 of the liquid fertilizer container 30 through 21 and dropping into the upper space 33 from the high pressure introduction communication path 20 or the air vent communication path 21. Accordingly, it is possible to prevent the concentration of the liquid fertilizer 38 in the liquid fertilizer container 30 from diminishing due to the water 39 mixed in the liquid fertilizer 38 having a specific gravity greater than the water 39.

  Further, since the corrugated washer 24 is provided in the connecting portion 14, water dripping from the container 30 side opening end surface 20 a of the high pressure introduction communication path 20 and the container 30 side opening end face 22 a of the air vent communication path 22 causes the fan-shaped piece 24 a of the washer 24 to be dropped. It is guided to the inner surface of the liquid fertilizer container 30 and enters the upper space 33 of the container 30 along the inner surface. For this reason, it is possible to reliably prevent water from dripping into the liquid fertilizer 38 in the container 30 from both communication paths and stirring the liquid fertilizer 38.

Further, since the filter member 25 is attached to the lower end portion of the liquid manure suction tube 23, the liquid manure suction passage 21 is prevented from being drawn and the mixing device 10 can be used for a long time.

It is a cross-sectional view which shows the liquid fertilizer mixing apparatus and container which concern on Example 1 of this invention. It is a perspective view which shows the waveform washer which concerns on Example 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Liquid fertilizer mixing apparatus, 10A ... Cylindrical body, 11 ... Inlet port, 12 ... Outlet port, 13 ... Flow channel, 13a ... Upstream flow channel, 13b ... Downstream flow channel, 14 ... Connection part, 15 ... Restriction channel, DESCRIPTION OF SYMBOLS 16 ... Fitting part, 16a ... Fitting part front end surface, 16b ... Fitting part base end part, 17 ... Tube connection part, 18 ... Ring groove, 19 ... O-ring, 20 ... High pressure introduction communication path, 20a ... High pressure introduction Communication passage container side opening end surface, 21 ... Liquid manure suction passage, 21a ... Liquid manure suction passage narrow diameter portion, 21b ... Liquid manure suction passage enlarged portion, 22 ... Air vent communication passage, 22a ... Air vent communication passage container side opening end surface, 23 ... Liquid fertilizer Suction tube, 24 ... corrugated washer, 24a ... corrugated washer fan, 24b ... corrugated washer central hole, 25 ... filter member.
30 ... Liquid fertilizer container, 31 ... Container mouth, 32 ... Container bottom, 33 ... Container upper space.
36: Water faucet side hose, 37: Sprinkling nozzle side hose, 38 ... Liquid fertilizer, 39 ... Water, 40 ... Liquid fertilizer dilution.

Claims (4)

A liquid fertilizer mixing device that sucks liquid fertilizer from a liquid fertilizer container with the pressure of pressurized water flowing through a flowing water channel connected to a pressurized water source such as a pump or a water tap, and mixes it with the water in the flowing water channel at a predetermined ratio. A cylindrical body provided with a connection portion fitted to the mouth of the liquid fertilizer container, forming a throttle passage in the middle of the flow channel, one end of the connection portion opening to the upstream flow channel of the throttle channel, and the other end A high-pressure introduction communication passage that opens to the upper space of the liquid fertilizer container connected to the connection portion, a liquid manure suction passage that has one end opened to the downstream flow channel of the throttle passage and the other end opened to the bottom space of the liquid fertilizer container, An apparatus for mixing liquid fertilizer, characterized in that an air vent communication path having one end opened in a downstream flow channel of a throttle passage and the other end opened in an upper space of the liquid fertilizer container is formed. The water fertilizer container connecting portion is provided with water guiding means for guiding water dripped from the container side opening of the high pressure introduction communication path and the container side opening of the air vent communication path to the inner surface of the liquid fertilizer container. The liquid fertilizer mixing apparatus according to 1. The corrugated washer is attached to the end face of the liquid fertilizer container connecting portion in which the container side opening of the high pressure side communication path and the container side opening of the low pressure side communication path are formed as the water guiding means. 2. The liquid fertilizer mixing apparatus according to 2. 2. The liquid fertilizer mixing apparatus according to claim 1, wherein a filter member is disposed in the liquid fertilizer suction passage.

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