JP5204339B1 - Anti-freezing spreader - Google Patents

Abstract

An object of the present invention is to eliminate the problem of problems caused by freezing and temporary use restrictions by making the spraying bowl of the sprayer free from residual spray liquid.
A water stop cock 4 that opens and closes a pipe 2b is provided at the base of a jet tube 2, and a drain valve 5 is provided for a spraying bowl of a sprayer that has a spray nozzle at least at the tip of the jet tube 2. The remaining spray liquid in the injection tube 2 can be discharged via the drain valve 5 when the stop cock 4 is closed. Although the water stop cock 4 and the water drain valve 5 are constituted by a three-way valve 11 and both of them are combined, they may be provided as independent valves.
[Selection] Figure 6

Description

  The present invention relates to a sprayer for a sprayer for spraying a medicine or the like, and in particular, a sprayer having a long jet tube (tube tube) in which the sprayed liquid tends to remain after use, and freezing the remaining sprayed liquid. The present invention relates to an anti-freezing sprayer that can be eliminated.

  Some sprayers used for spraying insecticides have a plurality of spray nozzles for one jet tube. The applicant of the present invention has proposed one of the spray baskets used in the sprayer having such a structure in Patent Document 1 below.

  In the sprinkler, an outer pipe and an inner pipe inserted inside the outer pipe constitute one jet pipe, and the inner pipe is slid to expand and contract the jet pipe.

  Note that there are also commercially available products that have a variable length by inserting an inner pipe inside the outer pipe and then removing the inner pipe.

Japanese Patent Application No. 2010-136994

  In particular, a spray basket that uses a long jet tube to expand the spray range tends to leave the spray liquid inside the jet tube after use. A water stop cock that opens and closes the pipe line of the tube is provided at the base of the tube (behind the part called the quayside nozzle). When the water stop cock is closed, the outlet of the pipe Since there is a spray nozzle having a large outflow resistance, the spray liquid filling the inside of the nozzle tube remains without being discharged.

  When the remaining spray liquid freezes in winter, the spray basket is damaged by the volume expansion of the spray liquid due to freezing. In addition, the tube is clogged even if it does not break. In addition, in the case of a telescopic sprinkler, the expansion and contraction of the jet tube is also hindered by freezing, and the sprinkler can not be used until the spray liquid is melted.

  It is an object of the present invention to eliminate the problem of damage due to freezing and temporary use restrictions by making the spraying basket of the sprayer free from the residual spray liquid.

  In order to solve the above-described problems, in the present invention, the nozzle has a water stop cock that opens and closes a pipe line from the spray liquid supply pipe to the jet pipe at the base of the jet pipe, and further, a spray nozzle at least at the tip of the jet pipe A spray valve is provided in the spraying spout of the sprayer having a so that when the water stop cock is closed, the remaining spray liquid in the nozzle can be discharged via the drain valve.

  The water stop cock and the drain valve are preferably combined (integrated), and the combination can be realized by configuring both valves as three-way valves.

  The three-way valve has a first position for connecting (communicating) the jet tube to the spray liquid supply pipe by switching the position of the valve body, and the jet pipe is connected to the spray liquid supply pipe and the drain port 2. A valve having a structure capable of selecting a second position for simultaneously disconnecting (disconnecting) from a person and a third position for connecting (communicating) the nozzle to the drain outlet is particularly preferable.

  The drain valve may be installed in a pipe joint provided with a pipe joint having a downward branching drain port between the jet pipe and the spray liquid supply hose.

  The drain valve provided independently from the water stop cock is a drain cock (which can be a commercial product) that can be opened and closed by simply rotating the lever 90 degrees. This is also achieved by using a water drain valve.

  The spraying spout of the present invention can discharge the spray liquid remaining in the nozzle tube to the outside by closing the water stop cock and opening the drain valve. In that operation, since the spray liquid itself disappears, freezing in the injection tube does not occur, and damage to the spraying tub due to freezing and usage restrictions are avoided.

  In addition, what comprised the said drain valve with the three-way valve integral with the water stop cock, and what used the three-way valve which can select the said 1st-3rd position by switching the position of a valve body especially By moving the valve body to the second position, the spray tube can be separated from both the spray solution supply hose and the drain port and the spray solution in the tube can be held for a short period of time.

  In applications where spray liquid containing medicine is sprayed, waste of spray liquid should be reduced as much as possible if there is no concern about freezing. Use a three-way valve that can separate the jet tube from both the spray liquid supply hose and the drain. This is effective in reducing waste of spray. The combination of the water drain valve and the water stop cock is excellent in operability, and can be reduced in size and cost.

  The water stop cock and drain valve, which are either installed alone or combined, may be manual valves and do not require a power source.

  For this reason, there is no problem in using the spreader. In addition, the number of parts is smaller than that of an electromagnetically driven valve, the structure is simple and inexpensive, and there is almost no risk of failure.

The perspective view which shows an example of the anti-freezing spreader of this invention Top view of the antifreeze sprinkler in FIG. (A): A cross-sectional side view showing the root side of the antifreezing sprinkler in FIG. 1 with the water stop cock open and the water drain valve closed, (b): along line III-III in FIG. Sectional view of the drain valve open state along the position 1 is a side sectional view showing the root side of the anti-freezing sprinkler in FIG. 1 with the water stop cock closed and the drain valve open. (A): A cross-sectional view showing a three-way valve in which a stop cock and a drain valve are combined with the stop cock open and the drain valve closed, (b): in the state of FIG. Side view showing lever position of 3-way valve (A): A cross-sectional view showing the three-way valve in FIG. 5 with both the water stop cock and the drain valve closed, (b): showing the lever position of the three-way valve in the state shown in FIG. 6 (a). Side view (A): Cross-sectional view showing the three-way valve of FIG. 5 with the water stop cock closed and the drain valve closed, (b): Side view showing the lever position of the three-way valve in the state of FIG. 7 (a) Figure

  Hereinafter, an embodiment of the antifreezing sprinkler of the present invention will be described based on FIGS. 1 to 7 of the accompanying drawings. The antifreezing sprinkler 1 illustrated in FIGS. 1 and 2 has a plurality of spray nozzles 3 attached to a jet tube 2, a water stop cock 4 at the root of the jet tube 2, and a drainage valve characterizing the present invention. 5 is provided.

  Reference numeral 6 denotes a grip for hand-holding provided on the outer periphery of the ridge-side nozzle hole 2a (base pipe) of the injection tube 2, and 7 denotes a shoulder belt. The grip 6 and the shoulder belt 7 are provided as necessary, and are not essential elements. In the figure, H is a spray liquid supply hose connected to the antifreeze sprinkler 1, and the spray liquid pumped up by a pump (not shown) is fed into the freeze preventive sprinkler 1 through this hose.

  The spray nozzle 3 is provided at two locations in the middle of the tip and the longitudinal end of the jet tube 2. The spray nozzle 3 in the middle of the longitudinal direction of the jet tube arranged in front of the shore jet nozzle 2a is attached to the nozzle holder 8 by attaching the nozzle holder 8 to the outer periphery of the jet tube 2, but the spray nozzle 3 is Depending on the size of the spreader, it may be provided only at the tip of the jet tube 2.

  A flow path (not shown) is provided inside the nozzle holder 8, and the flow path inside the nozzle tube 2 through a communication hole (also not shown) provided through the nozzle tube 2. 2b (see FIGS. 3 and 4), the spray liquid flows from the pipe line 2b to the flow path in the nozzle holder 8 via the communication hole, and is atomized from the spray nozzle 3 held in the nozzle holder 8. Is injected.

  The water stop cock 4 rotates the spherical valve body 4a shown in FIG. 3 and FIG. 4 in the range of 0 ° to 90 ° by the operation of the operation lever 4b, so that the pipe 2b (with the valve seat 4c of the pipe) It is a well-known cock that opens and closes the passage between them. The illustrated stop cock 4 is excellent in operability, but may be replaced with a valve other than the ball valve.

  3 is a manually operated ball valve in which a spherical valve body 5a, an operation lever 5b, and a valve seat 5c are combined. The drain valve 5 includes a water stop cock 4; It can be replaced with a gate valve similar to.

  In the drain valve 5, a pipe joint 9 having a downward branching drain port 10 is arranged between the water stop cock 4 and the injection pipe 2 and provided in the pipe joint 9. A valve in which 5 is combined can also be adopted.

  An example of the combined valve is shown in FIGS. The illustrated valve includes a single valve body 11a having a main passage Mp and a sub passage Sp branched from the main passage (the valve body shown in the figure is a ball) 11a, an operation lever 11b for rotating the valve body, and three pieces. The three-way valve 11 is a combination of the valve seat 11c.

  The operation lever 11b of the three-way valve is provided on the side portion of the antifreezing sprinkler 1 and when the operation lever 11b is held at the first switching position in FIG. 5B, the operation lever 11b is shown in FIG. As shown, the main passage Mp of the valve body 11a is released, the sub passage Sp is closed by the valve seat 11c on the drain port 10 side, and the pipe line 2b on the spray liquid supply hose H side than the three-way valve 11 is the injection tube. 2 is connected.

  When the operation lever 11b is rotated to the position shown in FIG. 6B, the position of the valve body 4a is switched to the second position shown in FIG. 6A, and the main passage provided in the valve body. Mp and the sub passage Sp are closed by the valve seat 11c, and the connection of the spray liquid supply hose H to the injection tube 2 and the connection of the injection tube 2 to the drain port 10 are both cut off.

  Further, when the operation lever 11b is rotated to the position of FIG. 7B, the position of the valve body 11a is switched to the third position shown in FIG. 7A, and the main passage Mp of the valve body by the valve seat 11c. The sub-passage Sp of the valve element is connected to the jet tube 2 in a state where the disconnection from the jet tube 2 is continued, and the interior of the jet tube 2 communicates with the drain port 10 via the sub-passage Sp and the main passage Mp. The residual spray liquid in the jet tube 2 is discharged to the outside.

  It is convenient to confirm the switching position of the operating lever 11b by putting a check mark on the lever and the valve housing or providing a known ratchet mechanism. However, depending on the operating position of the operating lever 11b, Since it is sprayed, spraying is stopped, or the existing spray liquid is discharged to the outside, the reference mark and the ratchet mechanism are not necessarily required.

  As described above, the antifreezing sprinkler 1 of the present invention closes the water stop cock 4 after use, and then opens the drain valve 5 by operating the lever 11b to remain in the inside of the injection tube 2. Can be discharged to the outside. If there is no concern about freezing, both the water stop cock 4 and the drain valve 5 can be closed after use to hold the remaining spray liquid inside the injection tube 2.

  The discharge of the remaining spray liquid when the drain valve 5 is opened does not particularly apply a discharge pressure. Therefore, the drain port 10 is preferably provided below the jet tube 2.

  If the drainage port 10 having the drainage valve 5 is provided on the lower side of the nozzle tube 2, the spray cock 1 is sprayed when the water stop cock 4 is closed and the drainage valve 5 is opened and the tip end side of the spraying tub 1 is lifted up slightly. Air flows into the tube 2 from the hole of the nozzle 3, and the remaining spray liquid in the tube 2 naturally flows out from the drain port 10.

Further, when the hole of the spray nozzle 3 is at a position lower than the drain valve 5, air flows into the injection pipe 2 from the drain port 10 and the remaining spray liquid flows out of the hole of the spray nozzle 3.

  The jet tube 2 is a telescopic tube configured by combining an inner pipe, an outer pipe into which the inner pipe is slidably inserted, and a lock mechanism for fixing the inner pipe to each point of the slide. May be. Of course, the present invention is not limited to this, and the present invention can be applied to all well-known spreading baskets.

DESCRIPTION OF SYMBOLS 1 Antifreeze sprinkle 2 Jet pipe 2a Vestibule nozzle 2b Pipe line 3 Spray nozzle 4 Water stopcock 4a Valve body 4b Operation lever 4c Valve seat 5 Drain valve 5a Valve body 5b Operation lever 5c Valve seat 6 Grip 7 Shoulder belt 8 Nozzle holder 9 Pipe joint 10 Drain port 11 Three-way valve 11a combined with water stop cock and drain valve 11a Valve body 11b Operation lever 11c Valve seat H Spray liquid supply hose

Claims (4)

  The root of the jet tube (2) has a water stop cock (4) for opening and closing a pipe (2b) from the spray liquid supply hose (H) to the jet tube, and at least the tip of the jet tube (2) A spray valve (5) is provided in a spray bottle of a sprayer having a spray nozzle (3), and when the water stop cock (4) is closed, the remaining spray liquid in the jet tube (2) is removed from the water. Freezing prevention sprayer that can be discharged via the drain valve (5).   The stop cock (4) and the drain valve (5) are selected for connection of the injection pipe (2) to the spray liquid supply hose (H) and connection of the injection pipe (2) to the drain port (10). The antifreezing sprinkler according to claim 1, comprising a three-way valve (11) that switches automatically.   As the three-way valve (11), a first position for connecting the jet pipe (2) to the spray liquid supply hose (H) by switching the position of the valve body (11a), and the jet pipe (2). A second position for simultaneously disconnecting the spray liquid supply hose (H) and the drainage port (10) and a third position for connecting the nozzle (2) to the drainage port (10) can be selected. The antifreezing sprinkler according to claim 2, wherein a valve having a structure is provided.   A pipe joint (9) having a downward branching drain port (10) is provided between the jet pipe (2) and the spray liquid supply hose (H), and the drain valve (5) is provided in the pipe joint (9). The anti-freezing sprayer according to claim 1 installed.

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