JP4084890B2 - Camera device for mixer monitoring - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for monitoring the behavior of materials in a mixer for kneading various materials.
[0002]
[Prior art]
For example, when producing ready-mixed concrete in a ready-mixed concrete production plant, it is necessary to monitor the mixing condition of ready-mixed concrete in a mixer for quality control, and a television camera is often used for this monitoring. The conventional camera device protects the camera lens from dust scattered by disposing a protective glass on the front surface of the camera. However, since the surface of the protective glass is also soiled, as described in Japanese Utility Model Publication No. 5-32254, cleaning water is sprayed on the glass surface to remove the soil on the surface of the protective glass.
[0003]
[Problems to be solved by the invention]
However, the conventional camera device has a problem in that a clear image is displayed due to water droplets of cleaning water adhering to the surface of the protective glass.
[0004]
An object of the present invention is to provide a mixer monitoring camera device that displays a clear image in view of the above points.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention attaches a suction duct connected to a dust collector to an upper cover body disposed so as to cover the upper part of the kneading tank, and sucks and removes dust rising in the kneading tank by the dust collector. A monitoring camera device for a mixer configured as described above, wherein a cylindrical camera protective case is disposed on the upper cover body of the mixer, and an open / close shutter is disposed close to the mixer side of the camera protective case. The camera protection case side wall behind the opening / closing shutter is perforated with an outside air inlet, a protective glass is attached to the rear camera protection case, a surveillance camera is disposed over the protection glass, and the opening / closing When the shutter is opened, outside air is taken in from the outside air intake by the dust collector that is constantly in operation while the mixer is in operation, and the air in the camera protective case is sucked out. It is characterized in that the configuration was.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
According to the mixer monitoring camera device of the present invention, when the material is put into the mixer, the opening / closing shutter of the camera protection case is closed so that the protective glass is not soiled, and the opening / closing shutter is opened when the loading is completed. And start shooting. This type of mixer is often equipped with a device that removes scattered dust by suction, and when the open / close shutter is opened, the camera takes in the outside air from the outside air inlet formed in the side wall of the camera protection case. Air containing dust drifting in the protective case passes through the upper space in the mixer and is sucked to the suction duct side. As a result, dust drifting in the camera protection case is eliminated, and the visual field of the surveillance camera is improved and a clear image is displayed.
[0007]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0008]
In the figure, reference numeral 1 denotes a mixer. For example, in a biaxial mixer for kneading and adjusting various concrete materials, the kneading tank 2 passes through two parallel kneading shafts 3 and can rotate in opposite directions. The kneading shaft 3 is radially arranged with a large number of arms 4, and a blade 5 having an appropriate angle is attached to the tip of the arm 4 to drive a motor (not shown). Is rotated at a predetermined speed.
[0009]
Reference numeral 6 denotes an upper cover body disposed so as to cover the upper portion of the kneading tank 2. The upper cover body 6 is provided with a material charging chute 7 for charging various materials into the mixer 1, and the mixer 1. A suction duct 8 for sucking dust that rises when various materials are put in is attached, and the suction duct 8 is connected to a dust collector 9 disposed in the vicinity of the mixer 1.
[0010]
The upper cover body 6 is provided with an opening 10 through which the inside of the mixer 1 can be seen, and a cylindrical camera protective case 11 is disposed in the opening 10 so that the inside of the mixer 1 can be photographed through the camera protective case 11. The camera 12 is installed on the support material 13.
[0011]
A protective glass 15 for protecting the lens 14 of the surveillance camera 12 is attached to the upper end of the camera protective case 11 so that the camera can be photographed through the protective glass 15.
[0012]
Further, an opening / closing shutter 17 having a hinge structure at one end and freely opened and closed by a cylinder 16 is disposed in the camera protection case 11 in front of the protective glass 15.
[0013]
Also, an outside air intake 18 of an appropriate size is formed in the side wall of the camera protection case 11 between the protective glass 15 and the opening / closing shutter 17.
[0014]
Therefore, when the materials are kneaded by the mixer 1, when various materials are charged from the material charging chute 7, the open / close shutter 17 is kept closed to protect the protective glass 15 from the generated dust.
[0015]
When the introduction of various materials is completed, the cylinder 16 is operated to open the opening / closing shutter 17. The dust collector 9 is constantly in operation while the mixer is in operation. When the open / close shutter 17 is opened, the camera collects the outside air from the outside air intake 18 formed in the side wall of the camera protection case 11. Air containing dust floating in the protective case 11 is sucked into the suction duct 8 in the mixer 1.
[0016]
As a result, the dust drifting in the camera protection case 11 is quickly removed, the field of view of the surveillance camera 12 is well secured without being blocked by the dust, and a clear image in the mixer 1 can be displayed.
[0017]
【The invention's effect】
As described above, in the mixer monitoring camera apparatus according to the present invention, which is employed in the configured mixer to aspirate the dust soar kneading tank in the dust collector, a cylindrical camera protection A case is disposed on the upper cover body of the mixer, an open / close shutter is disposed close to the mixer side of the camera protection case, and an outside air inlet is formed in the camera protection case side wall behind the open / close shutter, is attached a protective glass on the camera protective case of the rear, since the provided a monitoring camera to the protective glass over, when opening the opening and closing shutter, the dust collector during mixer operation that is constantly running outdoor air fresh air from the inlet is sucked out the air in the captured and camera protective case because, not that the camera lens is contaminated, also the time of photographing in a camera protective case View of drifting camera monitoring dust can Rid quickly can project a clear image becomes good.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram for partially cutting showing an embodiment of a camera device for monitoring a mixer according to the present invention.
FIG. 2 is an enlarged view of a main part of FIG.
3 is a partially omitted perspective view of FIG. 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mixer 6 ... Upper cover body 11 ... Camera protective case 12 ... Surveillance camera 15 ... Protective glass 17 ... Opening / closing shutter 18 ... Outside air intake

Claims (1)

A camera device for monitoring a mixer configured to attach a suction duct connected to a dust collector to an upper cover body arranged so as to cover the upper part of the kneading tank, and to suck and remove the dust rising in the kneading tank by the dust collector A cylindrical camera protective case is disposed on the upper cover body of the mixer, an open / close shutter is disposed close to the mixer side of the camera protective case, and a camera protective case side wall behind the open / close shutter is disposed. A protective glass is attached to the camera protective case behind it, and a surveillance camera is installed over the protective glass. When the shutter is opened, the mixer is in operation continuously. The mixer monitor is constructed so that the outside air is taken in from the outside air intake by the dust collector and the air in the camera protective case is sucked out. Use the camera device.

Images