Hopper washing device

Abstract

To solve the problem that conventional hopper washing devices usually have low cleaning power, and those with higher cleaning effect are costly and difficult to manufacture at low cost.SOLUTION: By using a hopper washing device that has an overall square-shaped configuration and is equipped with a front pipe section with multiple outlets that forms an angle of 10 to 70 degrees below a horizontal surface, a rear pipe section with multiple outlets at the vertical bottom, a right pipe section with multiple outlets at the vertical bottom, and a left pipe section with multiple outlets at the vertical bottom, the inside of the hopper can be cleaned with high cleaning power at a very low cost.SELECTED DRAWING: Figure 8

Description

[Background technology]

[0001] The present invention relates to a hopper cleaning device that cleans the inner peripheral surface of a hopper in a concrete mixer truck.

[0002] Generally, when ready-mixed concrete is poured into a rotating drum mounted on the bed of a concrete mixer truck via a hopper, the ready-mixed concrete adheres to the inner surface of the hopper, which is then washed away by an appropriate method.

[0003] In conventional concrete mixer trucks, the inner peripheral surface of the hopper is cleaned using a brush while water is discharged from a hose device for cleaning the hopper.

[0004] In recent years, mixer trucks have also appeared that use a hopper cleaning device that has a hopper cleaning hose at the end of it, with a pipe arranged in a ring shape around the inner edge of the hopper's upper opening, and that can be remotely operated to wash away ready-mixed concrete that has adhered to the inner surface of the hopper. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Application Publication No. 6-75707 [Patent Document 2] Jitsuhei No. 7-56166 Summary of the Invention [Problem to be solved by the invention]

[0006] For example, the invention described in Patent Document 1 has water sprinkler pipes arranged on the inside and inside surfaces of a hopper cover, and cleaning water is sprayed from a remote device operated from the driver's seat to clean the inside of the hopper.

[0007] This device does not have any distinctive features in the sprinkler pipe, and simply pours water into the hopper, resulting in low cleaning power.

[0008] In addition, the invention of Patent Document 2 arranges a pipe only on the front side of the inner peripheral edge of the hopper cover, and multiple nozzles for spraying cleaning water are rotatably attached to the pipe at appropriate intervals.

[0009] Although this device has improved cleaning effectiveness, the cleaning nozzle is costly and difficult to manufacture inexpensively. [Means for solving the problem]

[0010] In order to solve the above problem, the invention of claim 1 is a device for washing ready-mixed concrete adhering to the hopper of a mixer truck, and includes a front pipe section having a plurality of outlets at an angle of 10 to 70 degrees below the horizontal plane, a rear pipe section having the same length as the front pipe and a plurality of outlets at the vertically lower part, a right pipe section having a plurality of outlets at the vertically lower part, a left pipe section having the same length as the right pipe and a plurality of outlets at the vertically lower part, and a hose connected to the right pipe section or the left pipe section. The mixer truck is characterized in that it has a hose joint, in which the front pipe section is joined at an angle of 70 to 100 degrees to the upper part of the right pipe section and the upper part of the left pipe section, and the rear pipe section is joined at an angle of 70 to 100 degrees to the lower part of the right pipe section and the lower part of the left pipe section, forming an overall L-shape, and water injected from the hose joint is released from the outlets of the front pipe section, the rear pipe section, the right pipe section, and the left pipe section, thereby washing away ready-mixed concrete adhering to the hopper of the mixer truck.

[0011] In addition, the invention of claim 2 is a hopper cleaning device of claim 1, characterized in that it is provided with a blocking wall for the purpose of injecting water in only one direction into the right pipe section or the left pipe section connected to the hose connection section.

[0012] The invention of claim 3 is the hopper cleaning device of claim 1, characterized in that the material of the front pipe section, the rear pipe section, the right pipe section and the left pipe section is polyethylene or polyvinyl chloride resin. [Effects of the Invention]

[0013] According to the above invention, it is possible to provide a hopper cleaning device that can be manufactured and installed at very low cost. Furthermore, even when the inside of a hopper cannot be cleaned on-site, the device is inexpensive and can clean the inside of the hopper with high cleaning power. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view of the exterior of a mixer truck 20 to which a hopper cleaning device 10 according to an embodiment of the present invention is attached, as viewed from the right rear direction. [Figure 2] 1 is a perspective view of an appearance of an open hopper 214 of a mixer truck 20 to which a hopper cleaning device 10 according to an embodiment of the present invention is attached, as seen from the right rear direction. [Figure 3] 1 is an external view of a hopper cleaning device 10 according to an embodiment of the present invention, viewed from below. [Figure 4] 1 is an external view of a hopper cleaning device 10 according to an embodiment of the present invention, viewed from above. [Figure 5] 1A and 1B are an external view of a hopper cleaning device 10 according to an embodiment of the present invention as viewed from below, and a cross-sectional view of the hopper cleaning device 10. [Figure 6] 1 is a diagram illustrating the flow of water W when the hopper cleaning device 10 of Example 1 according to an embodiment of the present invention is viewed from below. FIG. [Figure 7] FIG. 10 is a diagram illustrating the flow of water W as seen from below in the hopper cleaning device 10 of Example 2 according to the embodiment of the present invention. [Figure 8] 1 is a diagram showing a state in which the hopper cleaning device 10 according to the embodiment of the present invention cleans the adhered ready-mixed concrete C with water W. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiments are examples for explaining the present invention, and are not intended to limit the present invention to only these embodiments. Furthermore, the present invention can be modified in various ways without departing from the gist of the present invention. Furthermore, the same components in each drawing will be designated by the same reference numerals whenever possible, and redundant explanations will be omitted.

[0016] <Embodiment> A hopper cleaning device 10 according to a first embodiment of the present invention will be described with reference to Figures 1 to 5. Figure 1 is an external perspective view of a mixer truck 20 to which a hopper cleaning device 10 according to an embodiment of the present invention is attached, as seen from the right rear direction, Figure 2 is an external perspective view of an open hopper 214 of the mixer truck 20 to which a hopper cleaning device 10 according to an embodiment of the present invention is attached, as seen from the right rear direction, Figure 3 is an external view of the hopper cleaning device 10 according to an embodiment of the present invention, as seen from below, Figure 4 is an external view of the hopper cleaning device 10 according to an embodiment of the present invention, as seen from above, and Figure 5 is an external view of the hopper cleaning device 10 according to an embodiment of the present invention, as seen from below, and a cross-sectional view of the hopper cleaning device 10.

[0017] 1, the mixer truck 20 generally includes a driver's cab 211 where the driver operates the truck, a drum 212 that loads ready-mixed concrete while rotating, a water tank 213 that stores water for washing, a hopper 214 that serves as the entrance for loading the ready-mixed concrete, a hopper cover 215 that serves as the lid for the hopper 214, and a chute 216 that discharges the transported ready-mixed concrete. The hopper cleaning device 10 is attached to the hopper cover 215, and cleans the ready-mixed concrete that adheres to the inside of the hopper 214 when the ready-mixed concrete is loaded.

[0018] 2, the hopper cleaning device 10 is used by fastening it to the hopper cover front frame 221 and the hopper cover rear frame 222 of the hopper cover 215 using an insulok, hook, or the like. Also, as shown in the figure, a water tank hose 223 extending from the water tank 213 is connected to the hose joint 115, and water is poured into the hopper cleaning device 10.

[0019] 3 to 5, the hopper cleaning device 10 is made up of a front pipe section 111, a rear pipe section 112, a right pipe section 113, a left pipe section 114, and a hose joint section 115. The materials for the front pipe section 111, the rear pipe section 112, the right pipe section 113, the left pipe section 114, and the hose joint section 115 are not particularly specified and may be metal, but in consideration of strength and weight, polyethylene or polyvinyl chloride resin is preferable.

[0020] 4, the front pipe section 111 is joined to the upper part of the right pipe section 113 at an angle 11R and to the upper part of the left pipe section 114 at an angle 12R, and the rear pipe section 112 is joined to the lower part of the right pipe section 113 at an angle 13R and to the lower part of the left pipe section 114 at an angle 14R. The angles 11R, 12R, 13R, and 14R are between 70 degrees and 100 degrees, and as shown in the figure, the hopper cleaning device 10 as a whole has a square shape.

[0021] There is no particular restriction on the method of joining the front pipe section 111, the rear pipe section 112, the right pipe section 113, and the left pipe section 114. They may be integrated during molding, or elbow sections or the like may be used to make the front pipe section 111, the rear pipe section 112, the right pipe section 113, and the left pipe section 114 detachable.

[0022] As shown in the cross-sectional view (b) of FIG. 5 as viewed from below, the front pipe section 111 includes outlets 111h1 to 111h10 that form an angle 111R downward from the horizontal plane. In the external view (a) as viewed from below, ten outlets 111h1 to 111h10 are provided, but the number is not specifically specified. The outlet angle 111R is preferably 10 to 70 degrees, more preferably around 45 degrees. The water force at this angle 111R increases the cleaning ability of the front of the hopper 214. The diameter hP of the outlets 111h1 to 111h10 is preferably 1.0 to 3.0 mm, more preferably around 2.0 mm.

[0023] The length 111L of the front pipe portion 111 is not specified, but is preferably 700 mm to 800 mm in consideration of the size of commercially available hopper covers 215. The diameter P of the front pipe portion 111 is also not specified, but is preferably 18 mm to 38 mm.

[0024] As shown in the cross-sectional view (c) of Figure 5 as viewed from below, the rear pipe section 112 includes outlets 112h1 to 112h10, which are angled downward at an angle 112R from the horizontal plane. In the external view (a) as viewed from below, ten outlets 112h1 to 112h10 are shown, but the number is not limited to a specific number. The outlet angle 112R is preferably 80 to 100 degrees, i.e., approximately vertical, and more preferably 90 degrees. The water pressure at the angle 112R enhances the cleaning performance of the sloped interior of the hopper 214. The diameter hP of the outlets 112h1 to 112h10 is preferably 1.0 to 3.0 mm, and more preferably approximately 2.0 mm.

[0025] The size of the length 112L of the rear pipe section 112 is not specified, but considering the size of commercially available hopper covers 215, it is preferably 700 mm to 800 mm, and is preferably the same length as the front pipe section 111. Similarly, the size of the diameter P of the rear pipe section 112 is not specified, but is preferably 18 mm to 38 mm.

[0026] The right pipe section 113, while not shown, includes outlets 113h1 to 113h8 that are angled downward from the horizontal plane by an angle 113R, similar to the cross-sectional view (c) of Figure 5 viewed from below. In the external view (a) viewed from below, eight outlets 113h1 to 113h8 are provided, but the number is not specifically specified. The outlet angle 113R is preferably 80 to 100 degrees, i.e., approximately vertical, and more preferably 90 degrees, which is vertical. The water force at angle 113R improves the cleaning performance of the sloped interior of the hopper 214. The diameter hP of the outlets 113h1 to 113h8 is preferably 1.0 to 3.0 mm, and more preferably approximately 2.0 mm.

[0027] The length 113L of the right pipe portion 113 is not specified, but is preferably 400 mm to 600 mm in consideration of the size of commercially available hopper covers 215. The diameter P of the right pipe portion 113 is also not specified, but is preferably 18 mm to 38 mm.

[0028] The left pipe section 114, while not shown, includes outlets 114h1 to 114h8 that are angled downward from the horizontal plane by an angle 114R, similar to the cross-sectional view (c) of Figure 5 viewed from below. In the external view (a) viewed from below, eight outlets 114h1 to 114h8 are provided, but the number is not specified. The outlet angle 114R is preferably 80 to 100 degrees, i.e., approximately vertical, and more preferably 90 degrees, which is vertical. The water force at angle 114R improves the cleaning performance of the sloped interior of the hopper 214. The diameter hP of the outlets 114h1 to 114h8 is preferably 1.0 to 3.0 mm, and more preferably approximately 2.0 mm.

[0029] The length 114L of the left pipe section 114 is not specified, but considering the size of commercially available hopper covers 215, it is preferably 400 mm to 600 mm, and is preferably the same length as the right pipe section 113. Similarly, the diameter P of the left pipe section 114 is not specified, but is preferably 18 mm to 38 mm.

[0030] In the drawing, the hose joint 115 is joined to the right pipe section 113, but it may also be joined to the left pipe section 114. The hose joint 115 is joined to a water tank hose 223 extending from the water tank 213, and pours water into the hopper cleaning device 10.

[0031] In the drawing, the shape of hose junction 115 is L-shaped, but is not particularly specified. Furthermore, the length 115L and width 115D of hose junction 115 are not specified, but are preferably 80 mm to 110 mm. The size of diameter P of hose junction 115 is also not specified, but is preferably 18 mm to 38 mm.

[0032] <Implementation Method> A method for implementing the hopper cleaning device 10 according to the embodiment of the present invention will be described with reference to Figures 6 to 8. Figure 6 is a diagram illustrating the flow of water W when the hopper cleaning device 10 according to Example 1 of the present invention is viewed from below, Figure 7 is a diagram illustrating the flow of water W when the hopper cleaning device 10 according to Example 2 of the present invention is viewed from below, and Figure 8 is a diagram illustrating how the hopper cleaning device 10 according to the embodiment of the present invention cleans the adhesive ready-mix concrete C with water W.

[0033] As shown in Figure 6, in Example 1, water W poured from the water tank hose 223 extending from the water tank 213 flows into the hose joint 115, splits into left and right from the center of the right pipe section 113, flows into the front pipe section 111 and the rear pipe section 112, and collides at the center of the left pipe section 114.

[0034] In Example 2 shown in Figure 7, a blocking wall 116 is provided on the right pipe section 113 near the hose joint 115, so that water W poured from a water tank hose 223 extending from a water tank 213 and flowing into the hose joint 115 flows only in one direction into the right pipe section 113. The water W flows in the order of the rear pipe section 112, the left pipe section 114, and the front pipe section 111, and collides at the blocking wall 116.

[0035] When the front pipe section 111, rear pipe section 112, right pipe section 113, and left pipe section 114 are filled with water W, the water W discharged from each outlet as shown in Fig. 8a) washes away the ready-mixed concrete C adhering to the inside of the mixer truck's hopper 214 as shown in Fig. 8b). The outlets 111h1 to 111h10 of the front pipe section 111 are set at an angle 111R, so the angle of the water W increases the cleaning ability of the front inside of the hopper 214 as shown in the figure.

[0036] Furthermore, the outlets of the rear pipe section 112, right pipe section 113 and left pipe section 114 are angled at an almost vertical angle 112R, and 113R and 114R (not shown), which increases the cleaning ability of the slope inside the hopper 214 as shown.

[0037] In the case of Example 1, the water pressure in the front pipe section 111 and the rear pipe section 112 is approximately equal, so it is possible to clean the entire inside of the hopper 214. In the case of Example 2, the water pressure in the rear pipe section 112 is strong, so the cleaning ability of the rear inside of the hopper 214 is high. [Explanation of symbols]

[0038] 10 Hopper cleaning device 20 Mixer Truck 111 Front pipe section 112 Rear pipe section 113 Right pipe section 114 Left pipe section 115 Hose joint 116 Bulkhead 211 Cab 212 drums 213 Water Tank 214 Hopper 215 Hopper Cover 216 shots 221 Hopper cover front bone 222 Hopper cover rear bone 223 Water Tank Hose C. Adhesion ready-mix concrete P Pipe diameter W water hP Outlet diameter

Claims

1. A device for cleaning ready-mixed concrete adhering to the hopper of a mixer truck, a front pipe portion having a plurality of air outlets that are angled 10 to 70 degrees below the horizontal plane; A rear pipe section having the same length as the front pipe and having a plurality of air outlets at a vertical lower portion; a right pipe portion having a plurality of outlets at a vertical lower portion; a left pipe portion having the same length as the right pipe and having a plurality of air outlets at a vertical lower portion; a hose joint portion joined to the right pipe portion or the left pipe portion; Equipped with The front pipe section is joined to the upper part of the right pipe section and the upper part of the left pipe section at an angle of 70 degrees to 100 degrees, The rear pipe section is joined to the lower part of the right pipe section and the lower part of the left pipe section at an angle of 70 degrees to 100 degrees, The overall shape is a square, and water injected from the hose joint is discharged from each outlet of the front pipe section, the rear pipe section, the right pipe section, and the left pipe section, thereby washing away ready-mixed concrete adhering to the hopper of the mixer truck. A hopper cleaning device characterized by:

2. A blocking wall is provided in the right pipe section or the left pipe section connected to the hose connection section in order to inject water in only one direction.

2. The hopper cleaning device according to claim 1.

3. The front pipe section, the rear pipe section, the right pipe section, and the left pipe section are made of a material selected from the group consisting of polyethylene and polyvinyl chloride resin.

3. The hopper cleaning device according to claim 1 or 2.

4. the total number of outlets of the front pipe section, the rear pipe section, the right pipe section, and the left pipe section is 30 to 40; 3. The hopper cleaning device according to claim 1 or 2.

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