JP6755211B2 - Weather resistance test equipment - Google Patents

Description

The present invention relates to a weather resistance test device.

Conventionally, as disclosed in Patent Documents 1 and 2 below, a weather resistance test device for testing the resistance of members and parts to deterioration caused by various external environments is known.

Patent Document 1 below discloses an apparatus for performing a salt damage test, which is a kind of weather resistance test for automobile parts. This test device includes a test tank for accommodating an automobile to be tested, a tank for storing salt water and muddy water, a nozzle for injecting salt water and muddy water into the test tank, and salt water and nozzles from the tank to the nozzle. It is equipped with a pipe that guides muddy water.

Patent Document 2 below discloses an apparatus for performing a contamination test assuming an outer wall material of a building or the like. This test device includes a test tank for accommodating a test piece, a pollution source generator for generating a pollution source such as granules and powders, and a liquid discharger for discharging a liquid toward the test piece. There is.

Japanese Unexamined Patent Publication No. 57-191534 Jitsukaisho 60-161851

In the test apparatus disclosed in Patent Document 1, muddy water (mixed liquid) is prepared in advance by mixing soil particles (powdered particles) and water (liquid) in a tank. Then, the muddy water is supplied to the nozzle via a pipe, and then is injected from the nozzle into the test chamber. In this test device, the liquid feeding parts such as valves and pumps provided in the pipe may be damaged by the wear caused by the soil particles contained in the muddy water.

The test apparatus disclosed in Patent Document 2 has a configuration in which a powder or granular material and a liquid are not mixed and are separately sprayed onto a test object. However, in the water splash test (splash water test) of automobile parts, it may be necessary to inject a mixed liquid that is a mixture of water (liquid) and sand (powder and granular material) toward the test object. The test apparatus of Patent Document 2 is not suitable for such a test.

The present invention has been made in view of the above problems, and an object thereof is suitable for a test of injecting a mixed liquid in which powders and granules are mixed with a liquid onto a test object, and suppresses damage in a liquid feeding portion. It is to provide a weather resistance test apparatus capable of performing.

The weather resistance test device according to the present invention is a device for testing the resistance of the test object by injecting a mixed liquid in which a powder or granular material is mixed with the liquid toward the test object. The weather resistance test apparatus includes a liquid injection unit having an injection unit that injects the liquid toward the test object, a liquid feeding unit that sends the liquid to the injection unit, and the test from the injection unit. It is provided with a powder or granular material supply unit that supplies the powder or granular material on the injection trajectory of the liquid toward the body. The injection portion has a slit-shaped injection port for the liquid. The powder or granular material supply unit has a predetermined width in the length direction of the slit, and has a drop end for dropping the powder or granular material. The powder or granular material supply unit is arranged at a position where the powder or granular material can be dropped on the injection trajectory of the liquid. The liquid injection unit and the powder or granular material supply unit are configured to have a variable relative position between the injection port and the drop end in the direction along the injection trajectory of the liquid.

In the weather resistance test apparatus, the liquid is injected from the injection unit of the liquid injection unit toward the test piece, and the powder or granular material is supplied from the powder or granular material supply unit onto the injection trajectory of the liquid. As a result, the powder or granular material is mixed with the liquid after injection to obtain a mixed liquid, and the mixed liquid can be applied to the test object. In the conventional weather resistance test device, muddy water (mixed liquid) in which water (liquid) and soil particles (powder / granular material) are mixed in advance flows in the pipe, so that the pipe and the valves and pumps provided in the pipe are used. The liquid transfer part may be damaged due to wear by soil particles. On the other hand, in the weather resistance test apparatus according to the present invention, the liquid before the powder or granular material is mixed is sent to the injection part by the liquid feeding part (for example, piping, valve or pump), and becomes the liquid after injection. A mixed liquid is obtained by mixing the powders and granules. Therefore, it is possible to suppress the occurrence of damage due to wear due to the powder or granular material in the liquid feeding portion of the liquid injection unit. Therefore, it is not necessary to take measures against wear due to the powder or granular material in the liquid feeding portion of the liquid injection unit, and an increase in device cost can be suppressed. Further, according to the above configuration, the mixed liquid can be easily obtained only by dropping the powder or granular material on the orbit of the liquid injected from the liquid injection unit. The spread width of the liquid after injection may not match the slit width of the injection port. Further, the width of the powder or granular material after the fall does not always match the width of the fall end. On the other hand, according to the above configuration, the falling width of the powder or granular material and the spreading width of the liquid can be easily matched by adjusting the relative positions of the injection port and the falling end. Therefore, the powder or granular material can be reliably mixed with the liquid after injection.

The weather resistance test apparatus according to another aspect of the present invention is an apparatus for testing the resistance of the test object by injecting a mixed liquid in which powder or granular material is mixed with the liquid toward the test object. The weather resistance test apparatus includes a liquid injection unit having an injection unit that injects the liquid toward the test object, a liquid supply unit that sends the liquid to the injection unit, and the test from the injection unit. A powder or granular material supply unit for supplying the powder or granular material on an injection orbit of the liquid toward the body, and a test tank for accommodating the test object are provided. The liquid injection unit and the powder or granular material supply unit are arranged outside the test tank. The test tank includes a tank body in which the test object is housed and an opening through which the liquid injection trajectory passes, and a test tank shutter that opens and closes the opening of the tank body. doing.

According to this configuration , the liquid injection unit and the powder / granular material supply unit are placed on the space inside the tank body by closing the opening of the tank body with the shutter for the test tank except when spraying the mixed liquid onto the test piece. Can be isolated. Thus, in a case where the tank is a high-temperature environment, the liquid jet unit and granular material supply unit can it to suppress the damage due to heat.

The weather resistance test apparatus according to still another aspect of the present invention is an apparatus for testing the resistance of the test object by injecting a mixed liquid in which powders and granules are mixed with the liquid toward the test object. The weather resistance test apparatus includes a liquid injection unit having an injection unit that injects the liquid toward the test object, a liquid feeding unit that sends the liquid to the injection unit, and the test from the injection unit. A powder or granular material supply unit that supplies the powder or granular material on the liquid injection orbit toward the body, and a test tank that accommodates the test object and has an opening through which the liquid injection orbit passes. A mixed space located outside the test tank and in which the liquid and the powder or granular material are mixed, and a housing in which the mixed space adjacent to the opening is formed inside. There is.

In the weather resistance test apparatus, the powder or granular material supply unit may have a powder or granular material feeding unit that feeds the powder or granular material onto the injection orbit. The weather resistance test device may further include a drying means for drying the powder or granular material at the powder or granular material feeding unit.

When the fluidity of the powder or granular material deteriorates due to the influence of moisture or the like in the powder or granular material feeding portion, it becomes difficult to feed the powder or granular material from the powder or granular material feeding portion toward the injection trajectory. On the other hand, according to the above configuration, the fluidity of the powder or granular material can be maintained by drying the powder or granular material at the powder or granular material feeding portion, so that the powder or granular material is directed toward the injection trajectory. You can definitely send it.

In the weather resistance test apparatus, the drying means may be a heater for heating the powder or granular material.

According to this configuration, the water contained in the powder or granular material can be removed by heating, so that the powder or granular material can be reliably dried.

In the weather resistance test apparatus, the drying means may be a dry air supply unit that blows dry air onto the powder or granular material.

According to this configuration, by using dry air, the powder or granular material can be dried while suppressing the temperature fluctuation of the powder or granular material. Therefore, even when the dried powder or granular material is mixed with the liquid, it is possible to suppress the temperature fluctuation of the liquid.

The weather resistance test apparatus may further include a powder or granular material supply chamber that accommodates the powder or granular material supply unit and has a housing having an opening for supplying the powder or granular material. The weather resistance test device may be configured so that air in the housing can flow out of the housing through the opening.

According to this configuration, the space inside the housing can be isolated from the environment of the external space. Further, in the case of the configuration in which the dry air is blown to the powder or granular material, after the dry air is blown to the powder or granular material, the space inside the housing can be brought into a dry state filled with the dry air. Therefore, the fluidity of the powder or granular material can be reliably maintained. Moreover, if the air inside the housing can flow out of the housing through the opening, it is possible to prevent steam or the like from flowing into the housing from the outside of the housing. As a result, it is possible to prevent the vapor flowing into the housing from condensing and deteriorating the fluidity of the powder or granular material.

In the weather resistance test apparatus, the powder or granular material supply chamber may further have a shutter for a supply chamber that opens and closes the opening of the housing of the powder or granular material supply chamber .

According to this configuration, the opening of the housing can be opened only when necessary, such as when supplying powder or granular material. Therefore, it is possible to prevent steam or the like from flowing into the housing by closing the opening of the housing when it is not necessary.

The weather resistance test apparatus has the liquid injection unit and the powder so that the injection of the liquid from the liquid injection unit is started after the supply of the powder or granular material from the powder or granular material supply unit is started. A control unit that controls the operation of the granular material supply unit may be further provided.

The amount of powder or granular material supplied from the powder or granular material supply unit may not be stable immediately after the start of supply. Therefore, when the supply of the powder or granular material is started after the injection of the liquid, the mixed liquid in which the concentration of the powder or granular material is out of the desired range is injected to the test object because the supply amount of the powder or granular material is not stable. It may be done. On the other hand, according to the above configuration, the injection of the liquid can be started after the supply amount of the powder or granular material is stabilized, so that the mixed liquid having a stable concentration of the powder or granular material is injected to the test object. be able to.

As is clear from the above description, according to the present invention, it is suitable for a test of injecting a mixed liquid in which powders and granules are mixed with a liquid onto a test object, and it is possible to suppress damage in a liquid feeding portion. A weather resistance test device can be provided.

It is a figure which shows schematic structure of the weather resistance test apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the structure in the vicinity of the liquid injection port and the drop end of the powder or granular material in the weather resistance test apparatus. It is a figure which shows schematic structure of the weather resistance test apparatus which concerns on Embodiment 2 of this invention. It is the schematic for demonstrating the weather resistance test apparatus which concerns on other embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
First, the weather resistance test apparatus 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 schematically shows the configuration of the weather resistance test device 1 according to the present embodiment. Note that FIG. 1 shows only the main configuration of the weather resistance test device 1, and the weather resistance test device 1 according to the present embodiment may have any other configuration not shown in FIG.

The weather resistance test device 1 tests the resistance of the test object 100 by injecting a mixed liquid in which the powder or granular material S is mixed with the liquid L1 toward the test object 100. Specifically, the weather resistance test device 1 is used for a water splash test (splash water test) of an in-vehicle device, and is cold water or cold salt water (liquid) whose temperature is controlled in the range of 0 ° C. or higher and 4 ° C. or lower. Sand water (mixed liquid) in which sand (powder S) is mixed with L1) is intermittently sprayed toward the test object 100 at predetermined intervals. According to the standard of the splash water test, the weather resistance test device 1 performs an operation of injecting the mixed liquid 100 times every 30 minutes for 3 seconds. In FIG. 1, the injection trajectory of the liquid L1 is indicated by a broken line arrow.

The splash water test is a type of ice water impact test defined in the ISO (International Organization for Standardization) 16750-4 standard, and tests the resistance of in-vehicle equipment to thermal shock caused by cold water. Here, by injecting cold water mixed with sand, it is possible to carry out a test simulating the environment when the automobile is driven on the road. As shown in FIG. 1, the weather resistance test apparatus 1 mainly includes a test tank 3, a liquid injection unit 2, and a powder or granular material supply unit 4.

<Test tank>
The test tank 3 accommodates the test object 100, which is an in-vehicle device installed in, for example, an engine room of an automobile. The test tank 3 mainly has a tank main body 31 for accommodating the test piece 100 and a support base 32 arranged in the tank main body 31. The support base 32 has an upper surface 32A on which the test piece 100 is placed.

The tank body 31 has a heat insulating wall structure, and an opening 31A through which the injection trajectory of the liquid L1 (dashed line arrow in FIG. 1) passes is formed. As shown in FIG. 1, the opening 31A is provided in the wall portion 31AA on the liquid injection unit 2 and the powder or granular material supply unit 4 side in the tank body 31. The space inside and outside the tank body 31 is communicated by the opening 31A.

The support base 32 is arranged so that the upper surface 32A is at substantially the same height as the opening 31A of the tank body 31. As a result, as shown in FIG. 1, the liquid L1 mixed with the powder or granular material S can be applied to the test object 100 through the opening 31A.

The test tank 3 includes a shutter 33 for a test tank that opens and closes the opening 31A of the tank body 31, and a temperature control mechanism (not shown) that controls the temperature inside the tank body 31. With this temperature control mechanism, the inside of the tank body 31 can be adjusted to a high temperature environment (for example, 60 to 160 ° C.) assuming an engine room of an automobile. Further, the test tank shutter 33 is preferably composed of a heat insulating member. While the test is stopped, the opening 31A of the tank body 31 can be closed by lowering the test tank shutter 33. Therefore, it is possible to prevent the liquid injection unit 2 and the powder or granular material supply unit 4 from being damaged by the hot air from the inside of the tank body 31. Further, it is possible to prevent the water vapor generated by the evaporation of the injected water in the tank body 31 from flowing out of the tank body 31 through the opening 31A. The test tank shutter 33 is not essential in the weather resistance test apparatus according to the present invention, and may be omitted.

<Liquid injection unit>
The liquid injection unit 2 has an injection unit 21 that injects the liquid L1 toward the test piece 100, and a liquid supply unit 29 that sends the liquid L1 to the injection unit 21. As shown in FIG. 1, the liquid injection unit 2 is arranged outside the test tank 3.

The liquid feeding unit 29 mainly has a circulation circuit 22 and a branch path 27. The circulation circuit 22 circulates the liquid L1, and has a liquid storage tank 24, a circulation pipe 25, a liquid feed pump 23, and a first on-off valve 26.

The liquid storage tank 24 stores the liquid L1 and has a volume corresponding to the amount of water required for the splash water test. The liquid storage tank 24 is provided with an inlet 24A of the liquid L1 and an outlet 24B of the liquid L1. In order to facilitate the outflow of the liquid L1 from the outlet 24B, the inlet 24A is provided on the upper side of the liquid storage tank 24 (above the outlet 24B), and the outlet 24B is located at the center of the bottom of the liquid storage tank 24 (below the inlet 24A). It is provided on the side). However, the positions of the inlet 24A and the outlet 24B in the liquid storage tank 24 are not limited to this.

The circulation pipe 25 is for returning the liquid L1 flowing out of the liquid storage tank 24 to the liquid storage tank 24 again. The circulation pipe 25 has an upstream end connected to the outlet 24B of the liquid storage tank 24 and a downstream end connected to the inlet 24A of the liquid storage tank 24.

The liquid feed pump 23 is provided in the circulation pipe 25, and adjusts the flow rate of the liquid L1 flowing through the circulation pipe 25 according to the rotation speed of the inverter motor. The first on-off valve 26 is provided in the circulation pipe 25, and switches the flow and cutoff of the liquid L1 in the circulation pipe 25.

The liquid injection unit 2 further includes a temperature control unit 50 that controls the temperature of the liquid L1 in the liquid storage tank 24. In the present embodiment, the temperature control unit 50 has a heating unit 51 and a cooling unit 52 arranged in the liquid storage tank 24. Heating unit 51 is adapted to heat the liquid L1 in蓄液tank 24, a collector thermal heater or the like. The cooling unit 52 cools the liquid L1 in the liquid storage tank 24, and is composed of, for example, a refrigerator.

The branch path 27 has a branch pipe 28 branched from the circulation pipe 25 and a second on-off valve 28A provided in the branch pipe 28. The branch pipe 28 branches from the portion P1 between the liquid feed pump 23 and the first on-off valve 26 in the circulation pipe 25. The branch pipe 28 has an upstream end connected to the portion P1 of the circulation pipe 25 and a downstream end where the injection portion 21 is provided. The second on-off valve 28A switches the flow and cutoff of the liquid L1 in the branch pipe 28.

According to the liquid feeding unit 29, the liquid L1 can be sent to the injection unit 21 as follows. First, the liquid feed pump 23 is operated in a state where the second on-off valve 28A is closed and the first on-off valve 26 is open. As a result, the liquid L1 temperature-controlled by the temperature control unit 50 flows out from the outlet 24B of the liquid storage tank 24, flows from the upstream end to the downstream end of the circulation pipe 25, and then flows into the liquid storage tank 24 from the inlet 24A. To do. That is, the liquid L1 temperature-controlled by the temperature control unit 50 circulates in the circulation circuit 22.

Next, the first on-off valve 26 is closed and the second on-off valve 28A is opened. As a result, the liquid L1 temperature-controlled by the temperature control unit 50 is introduced into the branch pipe 28 from the portion P1 of the circulation pipe 25. Then, the liquid L1 is sent to the injection unit 21 through the branch pipe 28.

In addition to the above operation, an operation in which the first on-off valve 26 is omitted, the liquid L1 is constantly circulated in the circulation circuit 22, and the second on-off valve 28A is opened only when the liquid L1 is injected from the injection unit 21 may be adopted. .. In this case, it is not necessary to synchronize the first on-off valve 26 and the second on-off valve 28A, and the valve control can be simplified. Further, the first on-off valve 26 may be changed to a flow rate adjusting valve so that it is always opened at a predetermined opening degree.

The liquid feeding unit in the present invention is not limited to the embodiment having the circulation circuit 22 and the branch path 27 as in the present embodiment. For example, the liquid L1 may be directly sent from the liquid storage tank 24 to the injection unit 21 through one pipe without circulating the liquid L1. Further, the mode is not limited to the mode of injecting the temperature-controlled liquid L1 by the temperature control unit 50, and the mode of injecting the liquid that is not temperature-controlled may be used. That is, the temperature control unit 50 may be omitted.

The injection unit 21 has an injection port 21A for the liquid L1 and is arranged so that the injection port 21A faces the mixing space 37A for mixing the liquid L1 and the powder or granular material S. As shown in FIG. 1, the mixing space 37A is a space inside the housing 37 fixed to the wall portion 31AA of the tank body 31. The branch pipe 28 penetrates the wall portion of the housing 37 so that the injection portion 21 is located in the mixing space 37A.

FIG. 2 shows in detail the configuration in the vicinity of the injection unit 21. As shown in FIG. 2, the injection unit 21 is composed of an injection nozzle having a flat shape. The injection unit 21 has a liquid L1 injection port 21A formed in a horizontally long slit shape. The injection port 21A is defined by the injection end surface 21AA of the nozzle. As shown in FIG. 2, according to the injection unit 21, the liquid L1 can be injected from the injection port 21A so as to spread in the length direction D1 of the slit. Further, the injection nozzle constituting the injection unit 21 may be configured to be detachable from the downstream end of the branch pipe 28.

<Granular material supply unit>
The powder / granular material supply unit 4 supplies the powder / granular material S onto the injection trajectory of the liquid L1 from the injection unit 21 toward the test piece 100. In the present embodiment, the powder or granular material supply unit 4 supplies the powder or granular material S which is sand (for example, Arizona sand).

The weather resistance test device 1 according to the present embodiment is characterized in that the powder / granular material S is supplied onto the injection trajectory of the liquid L1 by the powder / granular material supply unit 4 in this way. As a result, as shown in FIG. 1, a mixed liquid in which the powder or granular material S is mixed with the liquid L1 is formed in the mixing space 37A outside the test tank 3, and the mixed liquid is passed through the opening 31A to the test piece 100. Can be sprayed toward. That is, the powder / granular material supply unit 4 and the liquid injection unit 2 constitute a mixed liquid injection unit.

Therefore, in the weather resistance test device 1 according to the present embodiment, the liquid L1 before the powder or granular material S is mixed flows through the circulation circuit 22 and the branch path 27, and is sent to the injection unit 21. Then, the mixed liquid is obtained by mixing the powder or granular material S with the liquid L1 after injection. Therefore, damage caused by wear due to the powder or granular material S is suppressed on the inner surfaces of the circulation pipe 25 and the branch pipe 28, the insides of the first and second on-off valves 26 and 28A, and the inside of the liquid feed pump 23. be able to. Therefore, it is not necessary to take special measures against wear due to the powder or granular material S in the circulation pipe 25, the branch pipe 28, the first and second on-off valves 26, 28A, and the liquid feed pump 23. As a result, an increase in device cost can be suppressed.

The powder or granular material supply unit 4 is arranged outside the test tank 3. Further, in the present embodiment, the powder or granular material supply unit 4 is arranged above the liquid injection unit 2. As a result, as shown in FIG. 1, the powder or granular material S can be dropped from the powder or granular material supply unit 4 onto the injection trajectory of the liquid L1. The powder or granular material supply unit 4 has a falling end 41 for dropping the powder or granular material S, and a powder or granular material feeding unit 42 for sending the powder or granular material S to the falling end 41.

FIG. 2 shows in detail the configuration of the powder or granular material supply unit 4 in the vicinity of the drop end 41. As shown in FIG. 2, the powder or granular material feeding portion 42 has a tray shape that opens upward. The powder or granular material S is spread on the bottom surface of the tray of the powder or granular material feeding portion 42. The powder / granular material feeding unit 42 is a mechanism for feeding the powder / granular material S toward the falling end 41 by the vibration of the bottom surface of the tray.

The drop end 41 has a predetermined width W1 in the length direction D1 of the slit of the injection port 21A, and drops the powder or granular material S toward the liquid L1 in a waterfall shape. Further, in the present embodiment, the liquid injection unit 2 and the powder or granular material supply unit 4 are configured to have a variable relative position between the injection port 21A and the drop end 41 in the direction D2 (front-back direction) along the injection trajectory of the liquid L1. ing. That is, by changing the positions of at least one (one or both) of the liquid injection unit 2 and the powder or granular material supply unit 4 in the front-rear direction, the positional relationship between the injection port 21A and the drop end 41 in the front-rear direction is adjusted. Can be done. Specifically, the position of the falling end 41 in the front-rear direction can be controlled by moving the tray of the powder or granular material feeding portion 42 back and forth by a slide mechanism such as a roller or a rail. Further, by manually adjusting the mounting position of the injection portion 21, the position of the injection port 21A in the front-rear direction can be adjusted.

The width W2 of the liquid L1 after being injected from the injection unit 21 may not match the slit width of the injection port 21A (in the present embodiment, the liquid L1 spreads in a fan shape). Further, the width of the falling powder or granular material S does not always match the width W1 of the falling end 41. Therefore, even if the slit width of the injection port 21A and the width W1 of the falling end 41 are precisely designed, it is difficult to match the width W2 of the liquid L1 after injection with the width of the powder or granular material S being dropped. In some cases. On the other hand, according to the weather resistance test device 1 according to the present embodiment, the width of the falling powder or granular material S and the liquid L1 are adjusted by adjusting the relative positions of the injection port 21A and the falling end 41 in the front-rear direction. The width W2 can be easily adjusted. Therefore, the powder or granular material S can be reliably mixed with the liquid L1 after injection.

It should be noted that it is not essential in the weather resistance test apparatus according to the present invention that the relative positions of the injection port 21A and the drop end 41 are variably configured. The positions of the liquid injection unit 2 and the powder or granular material supply unit 4 may be fixed.

The weather resistance test device 1 further includes a powder or granular material supply chamber 70. The powder or granular material supply chamber 70 opens and closes the housing 71 in which the powder or granular material supply unit 4 is housed and the opening 71AA for supplying the powder or granular material S is formed, and the opening 71AA of the housing 71. It has a shutter 72 for a supply chamber to be used.

As shown in FIG. 1, when the powder or granular material S is supplied, the shutter 72 for the supply chamber is raised so that the opening 71AA of the housing 71 is opened. Then, the powder or granular material S is supplied from the falling end 41 of the powder or granular material supply unit 4 into the mixing space 37A through the opening 71AA. On the other hand, when the supply of the powder or granular material S is stopped, the shutter 72 for the supply chamber is lowered to close the opening 71AA of the housing 71. In this state, the space inside the housing 71 and the space outside the housing 71 (mixed space 37A) are separated from each other. The shutter 72 for the supply chamber may be omitted, or the powder or granular material supply chamber 70 itself may be omitted.

The weather resistance test device 1 further includes a drying means 60 for drying the powder or granular material S in the powder or granular material feeding unit 42. In the present embodiment, the drying means 60 is a heater 61 that heats the powder or granular material S in the powder or granular material feeding unit 42. As shown in FIG. 1, the heater 61 is arranged above the powder or granular material S so as to face the powder or granular material S in the powder or granular material feed portion 42.

When the fluidity of the powder or granular material S deteriorates in the powder or granular material feeding portion 42 due to the influence of moisture or the like, it becomes difficult to feed the powder or granular material S from the powder or granular material feeding portion 42 toward the falling end 41. On the other hand, the fluidity of the powder or granular material S can be maintained by heating and drying the powder or granular material S in the powder or granular material feed portion 42 using the heater 61. Therefore, the powder or granular material S can be reliably sent toward the falling end 41. Moreover, by using the heater 61 as the drying means 60, the moisture that can be contained in the powder or granular material S can be reliably removed by heating, so that the powder or granular material S can be reliably dried. The drying means 60 is not an essential configuration in the present invention and may be omitted.

The weather resistance test device 1 further includes a control unit 90 that controls the operations of the liquid injection unit 2 and the powder or granular material supply unit 4. The control unit 90 switches the injection of the liquid L1 from the injection unit 21 and the stop thereof by controlling the operation of the liquid feed pump 23 in the liquid injection unit 2 and the opening and closing of the first and second on-off valves 26 and 28A. Further, the control unit 90 switches the supply (fall) of the powder or granular material S from the drop end 41 and the stop thereof by controlling the vibration operation of the bottom surface of the tray in the powder or granular material feed unit 42. The control unit 90 may be configured to also control the operations of the temperature control unit 50, the heater 61, the supply chamber shutter 72, and the test tank shutter 33.

The control unit 90 controls the operations of the liquid injection unit 2 and the powder or granular material supply unit 4 so that the mutual timing of the injection of the liquid L1 and the supply of the powder or granular material S is adjusted. In the present embodiment, the control unit 90 starts the liquid injection unit 2 so that the injection of the liquid L1 from the liquid injection unit 2 is started after the supply of the powder or granular material S from the powder or granular material supply unit 4 is started. And control the operation of the powder or granular material supply unit 4.

Specifically, the control unit 90 first sends a supply start command for the powder or granular material S (a command for starting the vibration of the powder or granular material feed unit 42) to the powder or granular material supply unit 4. Next, the time measuring unit (timer) provided in the control unit 90 starts measuring the elapsed time after the supply start command. Then, after the elapsed time reaches a predetermined time, the control unit 90 sends an injection start command of the liquid L1 (a command for opening the second on-off valve 28A) to the liquid injection unit 2. As a result, after the supply of the powder or granular material S is started, the injection of the liquid L1 can be started with a predetermined time difference.

The amount of the powder or granular material S supplied from the powder or granular material supply unit 4 may not be stable immediately after the start of supply. Therefore, when the supply of the powder or granular material S is started after the injection of the liquid L1, the powder or granular material S is mixed with the liquid L1 in a state where the supply amount of the powder or granular material S is not stable. As a result, the mixed liquid in which the concentration of the powder or granular material S is out of the desired range may be ejected toward the test object 100. On the other hand, in the present embodiment, by starting the injection of the liquid L1 after the supply of the powder or granular material S is started, the injection of the liquid L1 can be started after the supply amount of the powder or granular material S is stabilized. .. Therefore, the mixed liquid having a stable concentration of the powder or granular material S can be sprayed toward the test piece 100. The mutual timing of the injection of the liquid L1 and the supply of the powder or granular material S is not limited to the above embodiment.

The weather resistance test apparatus 1 further includes a recovery tank 34 as a configuration other than the configuration described above. The recovery tank 34 is not an essential configuration in the weather resistance test apparatus according to the present invention, and may be omitted.

The recovery tank 34 is for recovering the mixed liquid jetted into the tank body 31. As shown in FIG. 1, the recovery tank 34 is connected to the bottom of the tank body 31 via the first recovery pipe 35. As a result, the mixed liquid collected at the bottom of the tank body 31 after being sprayed toward the test piece 100 during the test can be collected in the recovery tank 34 via the first recovery pipe 35. Then, by separating the powder or granular material S from the mixed liquid accumulated in the recovery tank 34, the powder or granular material S can be reused. In particular, since the Arizona sand used in the splash water test is expensive, there is a great advantage in providing the recovery tank 34.

Further, as shown in FIG. 1, the recovery tank 34 is connected to the bottom of the housing 37 forming the mixing space 37A via the second recovery pipe 36. As a result, the mixed liquid collected at the bottom of the housing 37 can also be collected in the recovery tank 34.

Further, a concentration measuring unit for measuring the concentration of the powder or granular material S in the mixed liquid may be provided, and the measurement result by the concentration measuring unit may be fed back to control the supply of the liquid L1 and the powder or granular material S.

<Summary of Embodiment 1>
Here, the main features of the weather resistance test apparatus 1 according to the first embodiment described as described above and the effects of the features are listed.

The weather resistance test device 1 according to the present embodiment is an device for testing the resistance of the test object 100 by injecting a mixed liquid in which the powder or granular material S is mixed with the liquid L1 toward the test object 100. The weather resistance test device 1 includes a test tank 3 that houses the test object 100, an injection unit 21 that injects the liquid L1 toward the test object 100, and a liquid supply unit 29 that sends the liquid L1 to the injection unit 21. The liquid injection unit 2 having the above, and the powder or granular material supply unit 4 for supplying the powder or granular material S on the injection orbit of the liquid L1 from the injection unit 21 toward the test piece 100 are provided.

In the weather resistance test device 1, the liquid L1 is injected from the injection unit 21 of the liquid injection unit 2 toward the test object 100, and the powder or granular material S is injected from the powder or granular material supply unit 4 onto the injection trajectory of the liquid L1. Supply. As a result, the powder or granular material S is mixed with the liquid L1 after injection to obtain a mixed liquid, and the mixed liquid can be applied to the test piece 100. Therefore, the liquid L1 before the powder or granular material S is mixed is sent to the injection unit 21 by the liquid supply unit 29 (circulation pipe 25, branch pipe 28, first and second on-off valves 26, 28A, liquid supply pump 23). Then, the powder or granular material S is mixed with the liquid L1 after injection to obtain a mixed liquid. Therefore, it is possible to suppress the occurrence of damage due to wear due to the powder or granular material S in the liquid feeding unit 29 of the liquid injection unit 2. Therefore, it is not necessary to take measures against wear due to the powder or granular material S in the liquid feeding unit 29 of the liquid injection unit 2, and it is possible to suppress an increase in equipment cost.

In the weather resistance test apparatus 1, the powder or granular material supply unit 4 is arranged at a position where the powder or granular material S can be dropped on the injection trajectory of the liquid L1. As a result, the mixed liquid can be easily obtained by simply dropping the powder or granular material S onto the orbit of the liquid L1 injected from the liquid injection unit 2.

In the weather resistance test apparatus 1, the injection unit 21 has a slit-shaped injection port 21A of the liquid L1. The powder or granular material supply unit 4 has a predetermined width W1 in the length direction D1 of the slit, and has a drop end 41 for dropping the powder or granular material S. The liquid injection unit 2 and the powder or granular material supply unit 4 are configured to have a variable relative position between the injection port 21A and the drop end 41 in the direction D2 along the injection trajectory of the liquid L1. As a result, even if the width W2 of the liquid L1 after injection and the width of the falling powder or granular material S do not match, the falling powder or granular material S can be adjusted by adjusting the relative positions of the injection port 21A and the falling end 41. The width of the liquid L1 and the width W2 of the liquid L1 can be easily matched. Therefore, the powder or granular material S can be reliably mixed with the liquid L1 after injection.

In the weather resistance test apparatus 1, the powder or granular material supply unit 4 has a powder or granular material feeding unit 42 that feeds the powder or granular material S to the drop end 41. The weather resistance test device 1 includes a drying means 60 for drying the powder or granular material S in the powder or granular material feeding unit 42. As a result, the fluidity of the powder or granular material S can be maintained by drying the powder or granular material S in the powder or granular material feeding unit 42. Therefore, the powder or granular material S can be reliably sent toward the falling end 41.

In the weather resistance test apparatus 1, the drying means 60 is a heater 61 for heating the powder or granular material S. As a result, the water contained in the powder or granular material S can be removed by heating, so that the powder or granular material S can be reliably dried.

In the weather resistance test apparatus 1, the liquid injection unit 2 and the powder or granular material supply unit 4 are arranged outside the test tank 3. The test tank 3 includes a tank main body 31 in which an opening 31A through which the injection trajectory of the liquid L1 passes while accommodating the test piece 100, and a test tank shutter 33 that opens and closes the opening 31A of the tank main body 31. ,have. By closing the opening 31A of the tank body 31 with the shutter 33 for the test tank except during the test in which the mixed liquid is sprayed onto the test piece 100, the liquid injection unit 2 and the powder / granular material supply unit 4 are placed in the space inside the tank body 31. Can be isolated against. As a result, it is possible to prevent the liquid injection unit 2 and the powder or granular material supply unit 4 from being damaged by heat when the inside of the tank is in a high temperature environment.

The weather resistance test device 1 is a liquid injection unit so that the injection of the liquid L1 from the liquid injection unit 2 is started after the supply (drop) of the powder or granular material S from the powder or granular material supply unit 4 is started. 2 and a control unit 90 for controlling the operation of the powder or granular material supply unit 4 are provided. As a result, the injection of the liquid L1 can be started after the supply amount of the powder or granular material S is stabilized, so that the mixed liquid having a stable concentration of the powder or granular material S can be injected toward the test piece 100. it can.

(Embodiment 2)
Next, the configuration of the weather resistance test device 1A according to the second embodiment of the present invention will be described with reference to FIG. The weather resistance test device 1A according to the second embodiment basically has the same configuration as the weather resistance test device 1 according to the first embodiment, except that the drying means 60 is a dry air supply unit 64. .. Hereinafter, only the differences from the first embodiment will be described in detail.

As shown in FIG. 3, the weather resistance test device 1A according to the second embodiment includes a dry air supply unit 64 for blowing dry air onto the powder or granular material S as the drying means 60. The dry air supply unit 64 includes a dry air supply source 62 and a dry air supply pipe 63 that guides dry air from the dry air supply source 62 to the powder or granular material S.

The dry air supply pipe 63 is a wall portion of the housing 71 from one end connected to the dry air supply source 62 to the other end (supply port 63A) located above the powder or granular material S in the powder or granular material feed portion 42. Extends to penetrate. As a result, dry air can be blown from the dry air supply source 62 to the powder or granular material S in the powder or granular material feeding portion 42 via the dry air supply pipe 63. The operation of the dry air supply source 62 is controlled by the control unit 90.

In the second embodiment, unlike the case where the heater 61 is used for drying the powder or granular material S as in the first embodiment, the powder or granular material S is suppressed from the temperature fluctuation of the powder or granular material S by using dry air. Can be dried. Therefore, even when the dried powder or granular material S is mixed with the liquid L1, it is possible to suppress the temperature fluctuation of the liquid L1.

Further, as shown in FIG. 3, the powder or granular material supply unit 4 is housed in the housing 71 of the powder or granular material supply chamber 70 as in the first embodiment, and the supply port 63A of the dry air supply pipe 63 is the housing. It is open to the space inside the body 71. Therefore, after the dry air is sprayed on the powder or granular material S, the space inside the housing 71 can be brought into a dry state filled with the dry air. Therefore, the powder or granular material S can be surely dried.

Further, by supplying dry air from the outside of the housing 71 into the housing 71, the pressure inside the housing 71 can be made higher than that outside the housing 71. Therefore, the air inside the housing 71 (including dry air) can flow out of the housing 71 through the opening 71AA. Therefore, the dry air supplied into the housing 71 is blown out to the mixing space 37A side through the opening 71AA. As a result, as shown in FIG. 3, it is possible to prevent gas from flowing into the housing 71 even when the opening 71AA is open during the test. Specifically, during the test, water vapor is generated by the evaporation of the water jetted into the tank body 31, but it is possible to suppress the water vapor from flowing into the housing 71. Therefore, it is possible to prevent the water vapor that has flowed into the housing 71 from condensing and deteriorating the fluidity of the powder or granular material S.

(Other embodiments)
Finally, the weather resistance test apparatus according to another embodiment of the present invention will be described.

In the first embodiment, the case where the liquid L1 is intermittently injected by the liquid injection unit 2 has been described, but the present invention is not limited to this, and the liquid L1 may be constantly injected.

In the first embodiment, sand has been described as an example of the powder or granular material, but the present invention is not limited to this. Various powders and granules that can cause a problem of wear in the liquid feeding unit 29 of the liquid injection unit 2 can also be used in the same manner.

In the first embodiment, the case where the powder or granular material S is dropped onto the injection trajectory of the liquid L1 has been described, but the present invention is not limited to this, and the powder or granular material is not limited to this and is upward from a position below the injection trajectory of the liquid L1. The mode of injecting S may also be used.

In the first embodiment, the case where the liquid injection unit 2 and the powder or granular material supply unit 4 are provided as separate devices as shown in FIG. 1 has been described, but the present invention is not limited to this. For example, the liquid injection unit 2 and the powder or granular material supply unit 4 may be provided in one mixed liquid injection device, respectively.

In the first embodiment, the powder or granular material feeding portion 42 having a tray shape has been described, but as shown in FIG. 4, the powder or granular material feeding portion 42 is formed with a hollow portion 42A through which the powder or granular material S can pass. It may have a structure. As a result, the thickness of the powder or granular material S in the width direction can be made uniform as compared with the case of the tray shape.

In the first embodiment, the case where the test object 100 is housed in the test tank 3 has been described, but the present invention is not limited to this. The test body 100 may not be housed in the test tank 3 and may be installed in a predetermined room before the test is performed.

It should be understood that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown not by the above description but by the scope of claims, and it is intended that all modifications within the meaning and scope equivalent to the scope of claims are included.

1,1A Weather resistance test device 2 Liquid injection unit 3 Test tank 4 Powder or granular material supply unit 21 Injection unit 21A Injection port 29 Liquid supply unit 31 Tank body 31A Opening 33 Test tank shutter 41 Drop end 42 Powder or granular material feed unit 60 Drying means 61 Heater 64 Dry air supply unit 70 Powder or granular material supply chamber 71 Housing 71AA Opening 72 Supply chamber shutter 90 Control unit 100 Test object L1 Liquid S Powder or granular material

Claims (9)

A weather resistance tester that tests the resistance of a test object by injecting a mixed liquid in which powders and granules are mixed with the liquid toward the test object.
A liquid injection unit having an injection unit that injects the liquid toward the test object and a liquid supply unit that sends the liquid to the injection unit.
A powder or granular material supply unit for supplying the powder or granular material on the injection orbit of the liquid from the injection unit to the test object is provided .
The injection portion has a slit-shaped injection port for the liquid.
The powder or granular material supply unit has a predetermined width in the length direction of the slit, and has a drop end for dropping the powder or granular material.
The powder or granular material supply unit is arranged at a position where the powder or granular material can be dropped on the injection trajectory of the liquid.
The liquid ejecting unit and the powder or granular material supply unit is characterized that you have been variably configured the relative position between the falling edge and the injection port in the direction along the ejection trajectory of the liquid, weathering apparatus. A weather resistance tester that tests the resistance of a test object by injecting a mixed liquid in which powders and granules are mixed with the liquid toward the test object.
A liquid injection unit having an injection unit that injects the liquid toward the test object and a liquid supply unit that sends the liquid to the injection unit.
A powder or granular material supply unit that supplies the powder or granular material on the injection orbit of the liquid from the injection unit to the test object.
E Bei and a test chamber for containing the test object,
The liquid injection unit and the powder or granular material supply unit are arranged outside the test tank.
The test tank
A tank body that accommodates the test piece and has an opening through which the liquid injection trajectory passes.
It characterized by having a a test chamber shutter for opening and closing the opening of the tank body, Weatherproof test apparatus. A weather resistance tester that tests the resistance of a test object by injecting a mixed liquid in which powders and granules are mixed with the liquid toward the test object.
A liquid injection unit having an injection unit that injects the liquid toward the test object and a liquid supply unit that sends the liquid to the injection unit.
A powder or granular material supply unit that supplies the powder or granular material on the injection orbit of the liquid from the injection unit to the test object.
A test tank that accommodates the test piece and has an opening through which the liquid injection trajectory passes.
It is provided with a mixing space located outside the test tank and in which the liquid and the powder or granular material are mixed, and a housing in which the mixing space adjacent to the opening is formed inside. A featured weather resistance test device. The powder or granular material supply unit has a powder or granular material feeding unit that feeds the powder or granular material onto the injection orbit.
The weather resistance test apparatus according to any one of claims 1 to 3, further comprising a drying means for drying the powder or granular material in the powder or granular material feeding unit. The weather resistance test apparatus according to claim 4, wherein the drying means is a heater for heating the powder or granular material. The weather resistance test apparatus according to claim 4, wherein the drying means is a dry air supply unit that blows dry air onto the powder or granular material. The powder or granular material supply unit according to claim 1 to 6, further comprising a powder or granular material supply chamber having a housing in which the powder or granular material supply unit is housed and an opening for supplying the powder or granular material is formed. The weather resistance test apparatus according to any one item. The weather resistance test apparatus according to claim 7, wherein the powder or granular material supply chamber further includes a shutter for a supply chamber that opens and closes the opening of the housing of the powder or granular material supply chamber . The operation of the liquid injection unit and the powder or granular material supply unit is performed so that the injection of the liquid from the liquid injection unit is started after the supply of the powder or granular material from the powder or granular material supply unit is started. The weather resistance test apparatus according to any one of claims 1 to 8 , further comprising a control unit for controlling.

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