Chemical tank

Abstract

To provide a chemical solution tank capable of performing a function to guide chemical solution flown from a water filling port and discharge it and a function to mount a mounted object.SOLUTION: A tank upper surface 6a of a chemical tank 6 is provided with a first recess 10 and a second recess 20. In a first recess bottom surface 10a, a water filling port 11 is formed. On a second recess bottom surface 20a, a mounting part S mounting a container C is provided. The first recess 10 and the second recess 20 communicate each other by a connection part 30. The first recess bottom surface 10a at a position of the connection part 30 is higher than a second recess bottom surface 20a at the position of the connection part 30. The second recess 20 has an open part 20c opening outward from an end part of the tank upper surface 6a.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a chemical liquid tank that is capable of containing a chemical liquid and on which an object can be placed on the upper surface of the tank. [Background technology]

[0002] For example, a spraying vehicle that sprays liquid pesticides is provided with a liquid pesticide tank that contains the liquid pesticide. When placing a box for storing pesticide containers on the top of such a liquid pesticide tank, a dedicated stand for placing the box on the liquid pesticide tank is attached to the liquid pesticide tank. Such a configuration in which a stand is attached to a liquid pesticide tank is described, for example, in Patent Document 1.

[0003] In addition, a water inlet is provided on the top surface of the tank, but the liquid may overflow from this inlet. Some tanks have a groove-shaped recess on the top surface to guide the liquid that overflows from the inlet so that the liquid does not splash onto problem areas. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-191611 A Summary of the Invention [Problem to be solved by the invention]

[0005] As described above, the structure for placing the box on the liquid tank and the structure for directing the liquid overflowing from the water inlet are provided separately. However, in this technical field, from the viewpoint of simplifying the structure, there is a demand for a structure that has both functions.

[0006] Therefore, an object of the present invention is to provide a chemical liquid tank that can realize, in a single shape, the function of guiding and draining chemical liquid that overflows from a water inlet, as well as the function of placing objects on it. [Means for solving the problem]

[0007] The present invention relates to a chemical liquid tank (6) capable of containing a chemical liquid therein and capable of placing an object (C) on a tank upper surface (6a), the tank upper surface (6a) being provided with a first recess (10) and a second recess (20) adjacent to the first recess (10), a first recess bottom surface (10a) which is the bottom surface of the first recess (10) is formed with a water inlet (11), and a second recess bottom surface (20a) which is the bottom surface of the second recess (20) is formed with a placement portion (S) on which the object (C) can be placed. ), the first recess (10) and the second recess (20) are connected to each other by a connection portion (30) that penetrates a wall surface (10b) of the first recess (10) and a wall surface (20b) of the second recess (20), the height of the bottom surface (10a) of the first recess at the position of the connection portion (30) is higher than the height of the bottom surface (20a) of the second recess at the position of the connection portion (30), and the second recess (20) has an opening portion (20c) that opens outward from an end portion of the tank top surface (6a).

[0008] In this chemical tank (6), the chemical liquid overflowing from the water inlet (11) can flow from the first recess (10) through the connection part (30) to the second recess (20) on which the object (C) is placed. In addition, in this chemical tank (6), the chemical liquid flowing into the second recess (20) can be drained to the outside from the tank top surface (6a) at the position of the opening part (20c). In other words, the second recess (20) has both a function of guiding and draining the chemical liquid overflowing from the water inlet (11) and a function for placing the object (C). In this way, the chemical tank (6) can achieve both a function of guiding and draining the chemical liquid overflowing from the water inlet (11) and a function for placing the object (C) in a single shape.

[0009] In the above-described chemical liquid tank (6), the height of the second recess bottom surface (20a) at the position of the connection portion (30) may be higher than the height of the second recess bottom surface (20a) at the position of a drainage portion (20d) in the open portion (20c) that drains the chemical liquid outward from an end portion of the tank upper surface (6a). In this case, the chemical liquid tank (6) can easily drain the chemical liquid that has flowed from the first recess (10) into the second recess (20) via the drainage portion (20d).

[0010] In the above-described chemical liquid tank (6), the bottom surface (20a) of the second recess may be inclined downward toward the drainage channel (20e) connecting the connection portion (30) and the drainage portion (20d). In this case, the chemical liquid tank (6) can collect the chemical liquid that has flowed into the second recess (20) in the drainage channel (20e) and easily drain it from the drainage portion (20d).

[0011] In the above-described chemical liquid tank (6), the bottom surface (10a) of the first recess may be horizontal or may be inclined downward toward the position of the connecting portion (30). In this case, the chemical liquid tank (6) can prevent the chemical liquid overflowing from the water inlet (11) from accumulating in the first recess (10) and allow the chemical liquid to flow into the second recess (20) via the connecting portion (30).

[0012] In the above-mentioned chemical liquid tank (6), the placement section (S) may be flat so that the object (C) can be placed thereon. In this case, the chemical liquid tank (6) can facilitate placing the object (C) on the placement section (S). Furthermore, even if the chemical liquid falls from the object (C) placed on the placement section (S) onto the bottom surface (20a) of the second recess, the chemical liquid tank (6) can prevent the chemical liquid from remaining on the bottom surface (20a) of the second recess and facilitate draining the chemical liquid to the outside through the opening (20c).

[0013] In the liquid chemical tank (6) described above, the placement portion (S) may be provided with a protrusion (20f) for fixing the object (C) to be placed. In this case, the liquid chemical tank (6) can fix the object (C) to the placement portion (S) using the protrusion (20f), and can prevent the object (C) from falling off the tank upper surface (6a). Effect of the Invention

[0014] According to the present invention, a chemical liquid tank can be provided that can achieve, in a single shape, the function of guiding and draining chemical liquid that overflows from a water inlet, and the function of providing a place to place objects. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view showing a boom sprayer equipped with a chemical solution tank according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of the liquid chemical tank and its surroundings as viewed from the left and diagonally above. [Diagram 3] FIG. 3 is a schematic diagram showing the configuration of the upper surface of the liquid chemical tank. [Figure 4] FIG. 4 is an end view showing the height positions of the bottom surface of the first recess and the bottom surface of the second recess around the connection portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each drawing, the same or corresponding elements are denoted by the same reference numerals, and duplicated explanations will be omitted.

[0017] First, the basic configuration of a boom sprayer 1 according to an embodiment will be described with reference to Fig. 1. The boom sprayer 1 is, for example, a self-propelled riding management machine (spraying work vehicle) equipped with a self-propelled vehicle 2 and a boom device 3 that sprays a chemical solution. The boom sprayer 1 sprays a chemical solution (chemical) stored in a chemical solution tank 6 while driving the vehicle 2 in a farm field. In the following description, "front", "rear", "left", and "right" refer to the boom sprayer 1 unless otherwise specified.

[0018] The vehicle 2 has a cabin 4 which is a cockpit for an operator. An engine room 5 which houses an engine is provided at the rear of the vehicle 2. A chemical tank 6 which contains the chemical liquid to be sprayed from the boom device 3 is provided between the cabin 4 and the engine room 5. The cabin 4 is provided at the front of the vehicle 2, and the chemical tank 6 is provided behind the cabin 4. The vehicle 2 has a pair of front wheels W1 and a pair of rear wheels W2.

[0019] The boom device 3 includes a center boom 3a, a right boom 3b, and a left boom 3c. When spraying a chemical solution, the right boom 3b and the left boom 3c are spread out so that they protrude to the right and left from the vehicle 2, respectively. A liquid supply pipe is provided along each of the center boom 3a, the right boom 3b, and the left boom 3c. A plurality of chemical solution nozzles N are attached to the liquid supply pipe. The boom device 3 sucks up the chemical solution from the chemical solution tank 6, pressure-feeds it to the liquid supply pipe, and sprays the chemical solution from the plurality of chemical solution nozzles N provided on the liquid supply pipe.

[0020] When spraying chemicals, the right boom 3b and the left boom 3c are folded up and stored diagonally upward at the rear in a position to the side of the vehicle 2 as shown in Figure 1. When the right boom 3b is in its stored position P, it is supported by a boom receiver that stands upright from the rear of the vehicle 2. When the left boom 3c is in its stored position P, it is supported by a boom receiver that stands upright from the rear of the vehicle 2.

[0021] More specifically, the boom device 3 is supported by a boom support device 7 provided at the front of the vehicle 2. The boom device 3 further includes a center frame 3d. The center frame 3d is a generally columnar member extending in the left-right direction, and is supported by the boom support device 7. The center frame 3d supports the center boom 3a at a position in front of the center frame 3d so as to extend along the left-right direction.

[0022] The right boom 3b is supported swingably at the right end of the center frame 3d. This allows the right boom 3b to open and close around a connection with the center frame 3d as an axis between a stored position P in which the right boom 3b is stored at a lateral position on the right side of the vehicle 2, and a deployed position in which the right boom 3b is protruded to the right side. In the stored position P, the right boom 3b is positioned along the right side of the vehicle 2.

[0023] The left boom 3c is supported swingably at the left end of the center frame 3d. This allows the left boom 3c to open and close around the connection with the center frame 3d as an axis between a stored position P in which the left boom 3c is stored at a lateral position on the left side of the vehicle 2, and a deployed position in which the left boom 3c is protruded to the left. In the stored position P, the left boom 3c is positioned along the left side of the vehicle 2.

[0024] Next, the chemical liquid tank 6 according to this embodiment will be described in detail. The chemical liquid tank 6 can store a chemical liquid therein. In this embodiment, the chemical liquid tank 6 can have an object placed on its tank upper surface 6a. Here, as an example, the object is described as a container C. For example, the container C can store a chemical, a hose, etc. to be put into the chemical liquid tank 6. In this embodiment, as an example, two containers C can be placed on the tank upper surface 6a.

[0025] As shown in Figs. 2 and 3, a first recess 10 and a second recess 20 adjacent to the first recess 10 are provided on the tank top surface 6a of the chemical liquid tank 6. The first recess 10 is provided approximately near the center in the left-right direction on the tank top surface 6a. The first recess 10 includes a first recess bottom surface 10a and a first recess wall surface 10b. The first recess bottom surface 10a forms the bottom surface of the concave shape of the first recess 10. The first recess wall surface 10b rises from the edge of the first recess bottom surface 10a and forms the wall surface of the concave shape of the first recess 10.

[0026] A water inlet 11 for injecting a medicinal liquid (chemical), water, etc. into the first recess 10 is formed on the bottom surface 10a of the first recess 10. The water inlet 11 is closed by a lid 12 so as to be able to open and close. When injecting a medicinal liquid, etc., the lid 12 is removed from the water inlet 11. The bottom surface 10a of the first recess is horizontal.

[0027] The second recess 20 is provided in the tank upper surface 6a at a position behind the first recess 10 and toward the left end. The second recess 20 includes a second recess bottom surface 20a and a second recess wall surface 20b. The second recess bottom surface 20a forms the concave bottom surface of the second recess 20. The second recess bottom surface 20a forms the placement portion S on which the container C is placed. The placement portion S is flat on which the container C can be placed. The second recess wall surface 20b rises from an edge of the second recess bottom surface 20a and forms the concave wall surface of the second recess 20.

[0028] The second recess 20 has an opening 20c that opens outward from the end of the tank top surface 6a. The opening 20c is a portion where the second recess wall 20b is not provided and the inside of the second recess 20 opens outward (laterally). In FIG. 3, the position of the opening 20c is indicated by a virtual line (two-dot chain line). In this embodiment, the second recess 20 opens outward from the rear end and the left end of the tank top surface 6a. In other words, the opening 20c extends along the rear edge and the left edge of the edge of the second recess bottom surface 20a.

[0029] The first recess 10 and the second recess 20 communicate with each other via a connection portion 30 that penetrates the first recess wall surface 10b and the second recess wall surface 20b. As shown in Fig. 4, the height of the first recess bottom surface 10a at the position of the connection portion 30 is higher than the height of the second recess bottom surface 20a at the position of the connection portion 30.

[0030] As shown in Fig. 2, the second recess bottom surface 20a is inclined downward toward the front side and downward toward the left side. Therefore, as shown in Fig. 2 and Fig. 3, the chemical solution on the second recess bottom surface 20a is drained from the left edge and the front edge of the second recess bottom surface 20a toward the left side of the second recess bottom surface 20a. In this way, the left edge and the front edge of the second recess bottom surface 20a of the open portion 20c becomes the drainage portion 20d that drains the chemical solution toward the outside of the second recess bottom surface 20a.

[0031] That is, the height of the second recess bottom surface 20a at the position of the connection part 30 is higher than the height of the second recess bottom surface 20a at the position of the drainage part 20d that drains the chemical solution from the end (left end) of the tank top surface 6a of the open part 20c toward the outside. Also, the second recess bottom surface 20a is entirely inclined downward toward the drainage channel 20e that connects the connection part 30 and the drainage part 20d.

[0032] 2, the placement section S is provided with a plurality of protruding portions 20f. The protruding portions 20f are used to fix the container C. For example, the protruding portions 20f may be bolts protruding upward from the bottom surface 20a of the second recess. For example, the container C is fixed to the placement section S by fastening the bottom surface of the container C with the bolts serving as the protruding portions 20f and nuts (not shown).

[0033] Here, for example, when the chemical solution or water is injected or when the boom sprayer 1 is swayed, the chemical solution in the chemical solution tank 6 may overflow from the water inlet 11. The following describes the drainage path of the chemical solution overflowing from the water inlet 11. As shown in FIG. 3, the chemical solution overflowing from the water inlet 11 tends to accumulate in the first recess 10. In this embodiment, the first recess 10 and the second recess 20 are connected via the connection part 30, so the chemical solution in the first recess 10 flows from the first recess 10 into the second recess 20 via the connection part 30.

[0034] As described above, the bottom surface 20a of the second recess is inclined downward toward the front and left side. Therefore, the liquid medicine that flows into the second recess 20 through the connection part 30 flows toward the left side along the drainage path 20e. Then, the liquid medicine is drained from the drainage part 20d toward the outside (left side) of the tank top surface 6a, and is drained downward along the side of the liquid medicine tank 6.

[0035] As described above, the chemical tank 6 can allow the chemical liquid overflowing from the water inlet 11 to flow from the first recess 10 through the connection portion 30 into the second recess 20 on which the container C is placed. In addition, in this chemical tank 6, the chemical liquid that has flowed into the second recess 20 can be drained to the outside from the tank upper surface 6a at the position of the open portion 20c. In other words, the second recess 20 has both a function of guiding and draining the chemical liquid overflowing from the water inlet 11 and a function for placing the container C therein. In this way, the chemical tank 6 can achieve, in a single shape, a function of guiding and draining the chemical liquid overflowing from the water inlet 11 and a function for placing the container C therein as a placed object.

[0036] The height of the second recess bottom surface 20a at the position of the connection portion 30 is higher than the height of the second recess bottom surface 20a at the position of the drainage portion 20d that drains the chemical solution from the end of the second recess bottom surface 20a outward. In other words, the chemical solution that has flowed into the second recess 20 can flow toward the drainage portion 20d on the second recess bottom surface 20a. In this case, the chemical solution tank 6 can easily drain the chemical solution that has flowed from the first recess 10 into the second recess 20 via the drainage portion 20d.

[0037] In the liquid chemical tank 6 of this embodiment, the drainage section 20d is located on the left edge of the bottom surface 20a of the second recess. In other words, the liquid chemical that overflows from the water inlet 11 is drained downward along the left side surface of the liquid chemical tank 6. This allows the liquid chemical tank 6 to drain the liquid chemical from a portion different from the engine compartment 5 where it is desired to avoid the liquid chemical being splashed.

[0038] The entire bottom surface 20a of the second recess is inclined downward toward the drainage channel 20e that connects the connection portion 30 and the drainage portion 20d. In this case, the chemical tank 6 can collect the chemical liquid that has flowed into the second recess 20 in the drainage channel 20e and easily drain it from the drainage portion 20d.

[0039] In this embodiment, the bottom surface 20a of the second recess is inclined downward toward the front and left side. Since the bottom surface 20a of the second recess is inclined downward toward the front side in this manner, the container C placed on the placement section S is in a state in which the upper opening is inclined toward the cabin 4. Therefore, the chemical liquid tank 6 makes it easy for an operator to take out the items stored in the container C from the cabin 4 side.

[0040] In the liquid chemical tank 6, the bottom surface 10a of the first recess is horizontal. In this case, the liquid chemical tank 6 can allow the liquid chemical overflowing from the water inlet 11 to flow into the second recess 20 via the connection part 30 while preventing the liquid chemical overflowing from the water inlet 11 from accumulating in the first recess 10.

[0041] The placement section S has a flat surface on which the container C can be placed. In this case, the chemical tank 6 can make it easy to place the container C on the placement section S. Furthermore, even if the chemical liquid falls from the container C placed on the placement section S onto the bottom surface 20a of the second recess, the chemical tank 6 can prevent the chemical liquid from remaining on the bottom surface 20a of the second recess and can make it easy to drain the chemical liquid to the outside through the open section 20c.

[0042] The mounting portion S is provided with a protrusion 20f for fixing the container C. In this case, the chemical liquid tank 6 can fix the container C using the protrusion 20f, and can prevent the container C from falling off the tank upper surface 6a (mounting portion S).

[0043] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, the bottom surface 10a of the first recess is horizontal, but may be inclined downward toward the position of the connecting part 30. In this case, the chemical tank 6 can further prevent the chemical liquid overflowing from the water inlet 11 from accumulating in the first recess 10, and can flow into the second recess 20 through the connecting part 30.

[0044] In the above embodiment, the liquid chemical tank 6 drains the liquid chemical that overflows from the water inlet 11 to the outside from the left side of the tank top surface 6a, but the direction of drainage is not limited. For example, if the engine room 5 is not provided behind the liquid chemical tank 6 (for example, if the engine room 5 is provided in front of the liquid chemical tank 6), the liquid chemical tank 6 may drain the liquid chemical that overflows from the water inlet 11 to the outside from the rear of the tank top surface 6a.

[0045] The positional relationship and shapes of the first recess 10, the second recess 20, and the connection portion 30 provided in the tank upper surface 6a are merely examples, and are not limited to the configuration shown in FIG. 3 and the like.

[0046] Although the container C is shown as an example of the object to be placed, an object other than the container C may be placed on the placement portion S on the upper surface of the liquid tank 6. In addition, the configuration of the protrusion 20f that fixes the container C may be a configuration other than a bolt. [Explanation of symbols]

[0047] 6...chemical liquid tank, 6a...top surface of tank, 10...first recess, 10a...bottom surface of first recess, 10b...wall surface of first recess, 11...water inlet, 20...second recess, 20a...bottom surface of second recess, 20b...wall surface of second recess, 20c...opening portion, 20d...drainage portion, 20e...drainage channel, 20f...convex portion, 30...connection portion, C...container (object to be placed), S...placement portion.

Claims

1. A chemical tank (6) capable of containing a chemical liquid therein and capable of placing an object (C) on an upper surface (6a) of the tank, The tank upper surface (6a) is provided with a first recess (10) and a second recess (20) adjacent to the first recess (10), A water inlet (11) is formed on a first recess bottom surface (10a) which is the bottom surface of the first recess (10), A second recess bottom surface (20a) which is a bottom surface of the second recess (20) constitutes a placement portion (S) on which the object to be placed (C) can be placed, The first recess (10) and the second recess (20) are connected to each other by a connecting portion (30) that penetrates a wall surface (10b) of the first recess (10) and a wall surface (20b) of the second recess (20), The height of the first recess bottom surface (10a) at the position of the connection portion (30) is higher than the height of the second recess bottom surface (20a) at the position of the connection portion (30), The second recess (20) has an opening (20c) that opens outward from an end of the tank top surface (6a).

2. The chemical tank (6) of claim 1, wherein the height of the bottom surface (20a) of the second recess at the position of the connection portion (30) is higher than the height of the bottom surface (20a) of the second recess at the position of a drainage portion (20d) of the open portion (20c) that drains the chemical liquid outward from an end of the tank top surface (6a).

3. The chemical tank (6) according to claim 2, wherein the second recess bottom surface (20a) is inclined downwardly toward a drainage channel (20e) connecting the connection portion (30) and the drainage portion (20d).

4. The chemical tank (6) according to any one of claims 1 to 3, wherein the bottom surface (10a) of the first recess is horizontal or inclined downwardly toward the position of the connection portion (30).

5. The chemical liquid tank (6) according to any one of claims 1 to 4, wherein the placement portion (S) is flat and capable of placing the object (C) thereon.

6. The chemical liquid tank (6) according to any one of claims 1 to 5, wherein the placement portion (S) is provided with a protrusion (20f) for fixing the object to be placed (C).

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