JPH04101070U - gasket - Google Patents

Abstract

(57) [Summary] [Purpose] This invention provides a gasket for a rotary spraying machine used for conveying shotcrete. [Structure] Consisting of a support plate (2) and an arcuate protective material (6) attached to it, an intermediate layer (7) whose protective material is made of an elastic material.
A gasket used in a rotary concrete spraying machine, characterized in that it is attached on top of the.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is a gasket for rotary spraying machines used to transport shotcrete. Regarding.

0002

[Problems to be solved by conventional techniques and ideas]

There are two methods for spraying concrete: dry method and wet method. In the dry method, sand , fill the spray machine with a heated dry or wet mixture of cement and, if desired, gravel. and is carried pneumatically by compressed air through the supply pipe to the spray nozzle. here Then, the required mixing water is added through a separate hose line and compressed air is added through a nozzle. spray concrete.

0003 The most widely used machine for dry spraying is the rotary spray machine. In this type of machine , the dry mixture is fed by a rotor from a delivery funnel into a feed pipe under pressure. Ru. The rotor has several rotating partition spaces, which are continuously horizontally rotated by the drive motor. Rotate to. On one side of the rotor, the partitioned space is gravity-filled from above by a delivery funnel. filled. The rotational movement causes the rotating partition space to pass through the outlet, and from the outlet into the space. the contents of which are discharged into a supply pipe under pressure of compressed air. Residual pressure is released, then rotation The partition space is further rotated for refilling. This type of rotating machine has the third German patent. No. 130682. Varies depending on height, shape and number of partition spaces rotors are used to adapt to the different characteristics of different raw materials and are used for different feeding operations. make a work For all types of rotors, the gasket is located at the top of the rotating compartment. It is necessary to seal the bottom and the bottom, and it is necessary to allow raw materials to enter and exit the rotating partition space. There is. A gasket consists of multiple sheets of elastic material fixed to a metal support plate. suitable for filling and discharging raw materials or supplying and discharging compressed air. It has an opening in the correct position. The material is stuck to the gasket and the top and bottom edges of the rotor. The arcuate protective material is filled (the upper gas gasket) or sometimes assembled into a gasket with an opening for evacuation (bottom gasket). It's included. These arcuate guards are made of hard, resistant material.

0004 The gasket is pressed against the friction plate and is made of an elastic material, so naturally it It is compressed to a thickness that cannot be compressed any further. The arcuate protection material is smaller than this compressed thickness. It must not be thick, otherwise the protective material would lift the gasket and cause frictional rotation. Separate it from the rolling plate and disable the sealing function of the gasket. In a normal embodiment, the bow The top of the shaped shield is 0.2-0.3 mm lower than the surface of the uncompressed gasket.

[0005] Gaskets are relatively expensive components that are subject to wear. Therefore durable It can be made and repolished several times. When resharpening, remove the arcuate guard It must be ground to the appropriate height and reinserted. But this is very troublesome It is labor intensive and therefore not normally performed.

[0006]

[Means to solve the problem]

It has now been found that this problem is easily overcome. In other words, this invention is supported. Consists of a plate and an arcuate protective material attached to it, and the protective material is an intermediate layer made of elastic material. Used in a rotating concrete spraying machine characterized by being mounted on the This provides a gasket that can

[0007] The presence of this intermediate layer allows the arcuate protection material to behave like the surrounding gasket material. A high degree of sealing and good protection are achieved at the same time.

[0008] The resilient member may be any suitable material. Preferably the same material as the gasket. It is best to have a certain degree of hardness. In a preferred embodiment, the protective member is a fastener, such as a screw. The height of the member relative to the gasket can be adjusted by tightening the screw. Can be easily adjusted. This screw can be inserted directly into the support plate or Penetrate it into other parts to which it is attached.

[0009] The invention will further be described with reference to the drawings depicting preferred embodiments. Figure 1 and FIG. 2 is a perspective view of the upper and lower gaskets attached to the rotor. Figure 3 is a view of the upper gasket portion of Figure 1 with the arcuate protector attached; The protection material is in place, indicated by the dotted line.

0010 A rubber gasket (1) is fixed to a support plate (2). Upper and lower gaskets Both kits have a central opening to ensure that the gasket is in place on the rotary spray machine. and the rotor drive shaft passes through it. The upper gasket has an elongated arcuate opening ( 4), through which the concrete raw material enters the rotating partition space, and the lower part The gasket has a small opening (5) through which the concrete material is drawn into the rotor. is discharged from the

[0011] An arcuate support (8) is fixed to one end of the opening (4), the sides of which are connected to the opening (4) and the gasket. It coincides with the sides of the socket (1) and the support plate (2). On top of this is an arcuate elastic member (7). is attached, and an arcuate protective member (6) is attached to the upper surface of this elastic member. . When the sides of members (6) and (7) are brought into contact with the opening (4), their sides and and the sides of the support (8) coincide. Members (6) and (7) are members (6) and (7). By means of screws which pass through and are fixed to the arcuate support in cooperation with the threads in the arcuate support (8). and fixed to the arcuate support. The position of the arcuate protective member (6) is determined by tightening or loosening the screw (9). It can be changed for gaskets depending on the mechanism.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an upper gasket.

FIG. 2 is a perspective view of the lower gasket.

FIG. 3 is a perspective view of the top gasket with the arcuate guard attached.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Gasket, 2... Support plate, 3... Central opening, 4... Opening, 5... Small opening, 6... Arcuate protective material, 7... Elasticity Member, 8... Arcuate support, 9
···screw.

Claims (4)

[Scope of utility model registration request] 1. A gasket for use in a rotary concrete spraying machine, comprising a support plate and an arcuate protection member attached to the support plate, the protection member being attached on an intermediate layer made of an elastic material. 2. The gasket of claim 1, wherein the arcuate guard is attached to the support plate by screws. 3. A gasket according to claim 1, wherein the elastic material has the same hardness as the material of the gasket. 4. A rotary concrete spraying machine comprising the gasket according to claim 1 or 2.