JPS5920373Y2 - Rotor seal plate in rotor spray machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a rotor seal plate in a rotor/taper spray machine.

A complete rotor spraying machine is used as a device for spraying materials such as concrete and furnace materials.

This rotor set sprayer has a rotor with many cylinder holes installed vertically around the circumference between the hopper supported above the frame and the nozzle on the frame side, and the material in the hopper is sequentially transferred into cylinders by rotation of the rotor. It is a mechanism that fills the hole and then pushes the filled material to the nozzle using compressed air.The upper and lower surfaces of the rotating rotor are airtightly sealed to ensure smooth filling and extrusion of the material. Rubber rotor seals backed by iron plates are attached to the hopper and frame sides, and these rotor seals are brought into close contact with the friction plates on the top and bottom of the rotor.

However, with such a rotor seal structure, after the material in the tube hole is pushed out to the nozzle, when the rotor rotates and the tube hole communicates with the material drop hole again, the residual compressed air in the tube hole is released into the hopper. It blows up.

Therefore, in this seed spout-type spraying machine, as shown in Figs. A circular ventilation hole 24.25 is provided through the hole, and an exhaust hole 27 communicating with the ventilation hole 24.25 is provided in the hopper holding plate 26 in contact with the iron plate 23 to allow the compressed air remaining in the cylindrical hole 7 to pass through. An exhaust structure was adopted in which the air was discharged to the outside through the air holes 24 and 25 and the exhaust guide hole 27.

However, in such an exhaust structure, since the cylindrical hole rises from the rotor seal 9' into the hopper safety panel and extends sideways, the residual air inside the cylindrical hole as well as the residual material inside the cylindrical hole are removed. is discharged and adheres to the exhaust hole wall (this phenomenon tends to occur when the material contains a lot of moisture and resilt), the exhaust hole 27
Even if a stick is inserted through the opening of the
' is difficult to remove, and the exhaust hole becomes clogged in a short time, or even if it is not clogged, the cross-sectional area of the exhaust hole becomes extremely small.

For this reason, with conventional spraying machines, it is necessary to stop operation frequently and disassemble the hopper holding plate 26 and rotor seal 9' to remove the adhered materials, which deteriorates handling efficiency and also causes disassembly. However, the disadvantage was that the efficiency of spraying decreased due to time loss during assembly.

The present invention eliminates the drawbacks of the conventional rotor-set spraying machine as described above, and can extremely easily eliminate the need to disassemble the rerotor mechanism that has stopped operating even if residual material entrained in the compressed air adheres to the hole wall. It has an exhaust structure that can be removed.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

3 to 6 show a rotor set spraying machine according to the present invention, in which 1 is a hopper holding plate supported above a frame 2, 3 is a hopper fitted to the hopper holding plate 1, and 4 is a hopper holding plate supported above the frame 2. Machine side nozzle fixed to the bottom surface of frame 2,
Reference numeral 5 denotes a rotor, which is rotatable by a drive shaft 6 fitted in the center, and has a large number of cylindrical holes 7 arranged vertically around its circumference.

Reference numerals 8 and 8' denote friction plates superimposed and fixed on the upper and lower surfaces of the rotor 5, and each has a window hole that matches the cylindrical hole 7.

9 is a rotor seal plate, which is composed of a rubber body 10 and a backing plate 11 fixed to the back side by baking a steel plate. It is attached to the hopper safety panel 1 via the hopper plate 1, and comes into close contact with the friction plate 8.

It has an insertion hole 13 for the drive shaft 6 in the center, and a material drop hole 14 is provided outside the insertion hole 13 for guiding the material into the cylindrical hole 7 through the opening of the hopper holding plate 1. An extrusion hole 15 is provided at a position forward of the drop hole 14 in the rotational direction for adding compressed air to extrude the material in the cylindrical hole to the machine side nozzle 4.

Such a structure is similar to the conventional rotor seal plate, but the present invention has a rubber seal plate at the position between the material drop hole 14 and the extrusion hole 15 without penetrating the backing plate 11. A groove-shaped exhaust hole 16 with an opening 17 is provided on the outer periphery of the main body 10, and the groove-shaped exhaust hole 16 has a groove bottom (ceiling surface) 161 on the surface of the backing plate 11 as shown in FIG. Alternatively, as shown in Figure 6, the groove bottom 1
61 may not reach the surface of the backing plate, and the rubber portion 162 may remain between the backing plates 11.

In other drawings, reference numeral 18 denotes a lower rotor seal plate fixed on the frame 2, which has a discharge port communicating with the machine side nozzle 4 and an exhaust hole communicating with an opening in the frame.

Next, to explain the function of the rotor seal plate according to the present invention, the material a in the hopper is sequentially filled into the cylindrical hole 7 of the rotor 5 from the material drop hole 14, and then the cylindrical hole 7 is inserted into the extrusion hole 15 by rotation of the rotor. When this happens, it is pushed out to the machine side nozzle 4 by the added compressed air.

When the tube hole 7 moves further and reaches the exhaust hole, the compressed air remaining in the tube hole 7 is discharged, and the material remaining in the tube hole is also taken with it and discharged to the outside from the exhaust hole.

In such cases, if the material is damp or the aggregate contains silt, the material tends to adhere to the wall of the exhaust hole, but in the present invention, the exhaust structure Since the opening 17 at the end does not penetrate through and forms the groove-shaped exhaust hole 16 that communicates with the outer periphery of the rubber body 10, the inner vertical wall surface 162 of the exhaust hole and both side walls are made of elastic rubber. Materials tend to adhere to this part, and the ceiling surface (groove bottom) 161, where materials tend to adhere, does not have a rising bent part, unlike the previous exhaust structure, and is different from the rubber inner vertical wall surface 162. Since the surface is a right-angled linear surface, the attached material can be easily and completely removed by simply inserting the rod 201 from the opening 17 along the groove bottom 161.

As described above, according to the present invention, there is provided a material drop hole that guides the material in the hopper to the cylindrical hole on the circumference of the rotor, and an extrusion hole that pushes out the material filled in the cylindrical hole to the machine side nozzle using compressed air. In a rotor seal plate for a rotor set spraying machine, a groove-shaped exhaust hole 16 is provided at a position between the material drop hole 14 and the extrusion hole 15, and is opened to the outer periphery of the rubber body 10 without penetrating the backing plate 11. Therefore, there is no need to stop operation or disassemble the device even if residual materials adhere to the cylinder hole, and the adhered materials can be removed very easily and reliably, and the exhaust hole can always be kept in a clean state. I can do it.

Therefore, excellent effects such as improved workability, no time loss due to stoppage of operation, and greatly improved efficiency of spraying can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional rotor set spray machine, Fig. 2 is a plan view of its rotor seal plate, and Fig. 3 is a partial cutaway schematically showing a spray machine equipped with a rotor seal plate according to the present invention. FIG. 4 is a plan view showing an example of the rotor seal plate according to the present invention, FIG. 5 is a sectional view showing its use, and FIG. 6 is a sectional view showing another embodiment of the present invention. be. 9...Rotor seal plate, 10...Rubber body, 11...Backing plate, 14...
Material drop hole, 15...Extrusion hole, 16...
・Groove-shaped exhaust hole.

Claims (1)

[Scope of utility model registration request] In a rotor seal plate for a complete rotor spray machine, which is equipped with a material drop hole that guides the material in the hopper to a cylindrical hole on the circumference of the rotor, and an extrusion hole that pushes out the material filled in the cylindrical hole to a nozzle on the machine side using compressed air. , in a complete rotor spraying machine characterized in that a groove-shaped exhaust hole 16 is provided at a position between the material drop hole 14 and the extrusion hole 15, and is open to the outer periphery of the rubber body without penetrating the backing plate 11. rotor seal plate.