JP2019210718A - Compression sprayer - Google Patents

Abstract

To provide a compression sprayer which can improve airtightness of the casing for compression.SOLUTION: A compression sprayer is provided which sends out spray material P with the pressure of compressed air. A casing for compression 10 is provided which consolidates the spray material P inside the tip side. A casing for aeration 20 is provided which presses out the consolidated spray material P. The spray material P is loosened in the casing for aeration 20 and sent out by compressed air. Elastic material 31 is annularly provided on the tip side of the casing for compression 10. The elastic material 31 is formed as if being adhered fast on the circumference of the consolidated spray material P.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a compression sprayer used when spraying a spray material finely crushed by a stirrer or a crusher, for example, on a slope using compressed air.

  As this type of sprayer, for example, a sprayer having a configuration shown in Patent Document 1 is disclosed. This spraying machine is provided with a cylinder under the hopper, supplying spray material such as concrete and mortar from the hopper to the cylinder, and extending the screw shaft in the cylinder to the cylinder tip side. The spray material is fed, and the spray material is compressed by this extending portion.

  Then, in the vicinity of the shaft end of the extending portion, the injection cylinder connected to the compressor and the discharge cylinder connecting the spray hose are opposed to each other and opened in the cylinder, and the compressed spray material is finely divided in the vicinity of the opening. A loosening wing is installed for loosening.

  This spraying machine compresses the spraying material sent between the loosening blade and the extension part of the screw shaft, and closes the cylinder so that the amount of spraying material sent out by the screw conveyor is made constant. It is a configuration. However, when a relatively soft and easy-to-flow spray material is sent out, the spray material becomes difficult to solidify, and thus there is a case where the closed portion is not formed on the tip side of the cylinder.

  Therefore, the applicant of the present invention has previously proposed a feeding device capable of maintaining a closed state by securely pressing even a soft spray material (Patent Document 2).

  This feeding device is provided with an opening / closing mechanism that opens and closes the distal end opening of the compression casing that conveys the spray material. And, when the spraying material is pressed and hardened, the tip opening portion of the compression casing is closed, and after the spraying material is pressed and solidified, the tip of the compression casing is opened and the solidified spraying material is pushed out. .

  Further, the spray material extruded from the tip of the compression casing is finely loosened in the air mixing casing adjacent to the compression casing and then conveyed by compressed air introduced into the air mixing casing. is there.

Japanese Patent No. 2729572 Japanese Patent No. 4702683

  With the feeding device of Patent Document 2, it is possible to reliably compress even a spray material having relatively good fluidity. However, when extruding the hardened spray material, a phenomenon may occur in which compressed air for compressing and conveying the fine material flows backward into the compression casing.

  It has been found that this reverse flow phenomenon occurs when a part of the compressed air enters the compression casing through a gap between the pressed spray material and the inner wall of the compression casing.

  That is, when materials obtained by pulverizing wood, grass, or the like in a metal compression casing are compressed, there is no gap between the compression casing and the material due to the elastic force of these materials. Therefore, the backflow of compressed air did not occur with such an elastic material.

  However, when a material containing sand is compressed in the compression casing, a slight gap is generated between the hard inner wall of the compression casing and the granular shape of the sand contained in the material. However, if the material is compressed in a stationary state, the gap will be extremely small and no back flow will occur yet.However, if the compressed material is moved in the tip direction, the inside of the metal compression casing and the non-elastic granular material It was found that a reverse flow in which compressed air enters from a slight gap was generated.

  In addition, when such a backflow phenomenon occurs, the material compressed in the compression casing may collapse due to the backflow phenomenon. Furthermore, since the compressed air which conveys a spraying material will escape to the casing side for compression, it will become impossible to spray material with compressed air.

  In view of the above, an object of the present invention is to provide a compression sprayer capable of improving the airtightness of a compression casing in order to prevent the occurrence of the backflow phenomenon as described above.

In order to achieve the above-mentioned object, the first means in the present invention is to continuously feed the spray material P such as concrete or mortar into the compression casing 10 and press and harden it inside the front end side of the compression casing 10. The compressed spray material P is extruded into the air mixing casing 20 provided outside the front end side of the compression casing 10, and the spray material P loosened in the air mixing casing 20 is compressed air. In a compression sprayer configured to be sent out by pressure,
An elastic material 31 is annularly arranged on the distal end side of the compression casing 10,
The elastic material 31 is configured to be in close contact with the periphery of the blowing material P before the pressed blowing material P is pushed into the air mixing casing 20.

  In the second means, the solid holding cylinder 30 is detachably attached to the distal end portion of the compression casing 10, and the annular elastic member 31 is detachably disposed on the solid holding cylinder 30. Is.

  The elastic member 31 of the third means is configured such that a plurality of thin elastic members 31 having an annular shape are stacked, and the plurality of stacked elastic members 31 are pressed and integrated by the solid holding cylinder 30. It is composed.

  The elastic member 31 of the fourth means has an annular protrusion 31A protruding from an annular inner peripheral surface.

  As described in claim 1 of the present invention, the elastic material 31 is annularly arranged on the front end side of the compression casing 10, and before the compressed spray material P is pushed out into the air mixing casing 20, Since the elastic material 31 is configured to be in close contact with the periphery of the spray material P, the airtightness of the compression casing 10 can be enhanced. As a result, it succeeded in preventing the phenomenon in which the compressed air flows backward from a slight gap between the compressed spray material P and the inner wall of the compression casing 10.

  As described in claim 2, the solid holding cylinder 30 is detachably attached to the tip of the compression casing 10, and the annular elastic member 31 is detachably disposed on the solid holding cylinder 30. Thus, the elastic material 31 can be easily replaced. Therefore, when the elastic material 31 is consumed, the replacement work with the new elastic material 31 is facilitated.

  As in claim 3, the elastic material 31 is configured such that a plurality of thin elastic materials 31 having an annular shape are stacked, and the plurality of stacked elastic materials 31 are pressed and integrated by the solid holding cylinder 30. As a result, when the elastic material 31 is replaced, it is possible to select and replace the worn elastic material 31. As a result, reasonable maintenance can be performed.

  Since the elastic member 31 has the annular protrusion 31A protruding from the annular inner peripheral surface as in claim 4, the protrusion 31A further sprays from the elastic member 31 in close contact with the spraying material P. It can bite into the material P and prevent the backflow of compressed air more reliably.

  As described above, according to the present invention, the airtightness of the compression casing can be increased, and the original purpose of preventing the backflow phenomenon of the compressed air can be achieved.

It is a front sectional view showing an example of the present invention. (A) thru | or (C) is each arrow directional cross-sectional view shown in FIG. 1, (A) is arrow AA line, (B) is arrow BB line, (C) is arrow C- It is sectional drawing of a C line. It is a top view which shows one Example of this invention. It is a side view which shows one Example of this invention. The state which mounts | wears with an elastic material to the solid holding cylinder of this invention is shown, (A) is a front view, (B) is a side view. The state which fixes a solid holding cylinder to the elastic material of this invention is shown, (A) is a front view, (B) is a side view. The state which fixed the solid holding cylinder to the elastic material of this invention is shown, (A) is a front view, (B) is a side view.

  The present invention is used when spraying a spray material P such as concrete or mortar onto a slope or the like with compressed air. The main configuration of the present invention is a configuration including a compression casing 10, an air mixing casing 20, and a solid holding cylinder 30.

  The compression casing 10 is a tubular member installed under the hopper 1 for supplying a spray material P such as concrete or mortar. The compression casing 10 is sprayed from the hopper 1 to the inlet 11 on the base end side of the compression casing 10. The material P is supplied. A compression rotary blade body 12 is mounted in the compression casing 10. And it is comprised so that the blowing material P may be sent to the front end side of the casing 10 for compression, and the blowing material may be compressed by this front end side (refer FIG. 1).

  The air mixing casing 20 is a storage part provided on the front end side of the compression casing 10 and is provided with a closing mechanism 21 that closes the front end opening of the compression casing 10 (see FIG. 1). When the blowing material P is compressed in the compression casing 10, the closing mechanism 21 closes the tip opening of the compression casing 10, and after a certain amount of the blowing material P is compressed, Is released so that the blowing material P pressed from the tip of the compression casing 10 is pushed out into the air mixing casing 20.

  The illustrated closing mechanism 21 includes a shaft 21A that reciprocates in the distal direction of the compression casing 10, and a sealing board 21B that is connected to one end of the shaft 21A (see FIG. 1). Then, until the spray material P is pressed and hardened in the compression casing 10, the spray material P is pressed down by the sealing board 21 </ b> B (see FIG. 3). After the spray material P is pressed and hardened in the compression casing 10, the closing mechanism 21 is moved to open the closed portion so that the spray material P is pushed out into the air mixing casing 20.

  When the compressed spray material P is pushed into the air mixing casing 20, the spray material P is loosened finely in the air mixing casing 20. That is, a rotary blade body 22 for finely loosening the pressed spray material P is provided inside the air mixing casing 20 that protrudes greatly below (see FIG. 2). And the blowing material P which open | released the obstruction | occlusion mechanism 21 and was extruded below the casing 20 for air mixing is loosened finely by the rotary blade body 22 immediately below (refer FIG. 4).

  An air supply port 23 is provided in the upper portion of the air mixing casing 20, and a discharge port 24 is provided in the lower portion (see FIG. 1). The compressed air from the air supply port 23 also acts to drop the compressed spray material P delivered from the tip of the compression casing 10 into the air mixing casing 20. Then, the blowing material P finely loosened by sending the conveying air using compressed air from the air feeding port 23 to the discharge port 24 is fed from the casing 20 for mixing air to the conveying cylinder 40. ing. The conveying cylinder 40 is configured so that compressed air is supplied from another path, and the pressure for blowing the spray material P onto a predetermined reinforcing surface or the like together with the conveying air is increased.

  The solid holding cylinder 30 is a member attached to the tip of the compression casing 10, and an annular elastic material 31 is disposed on the solid holding cylinder 30. And before the spraying material P is extruded in the casing 20 for air mixing, it comprises so that the elastic material 31 may closely_contact | adhere to the periphery of the pressed spraying material P (refer FIG. 1).

  The elastic material 31 can be directly attached to the inside of the tip of the compression casing 10. Further, as in the illustrated example, it is also possible to dispose the elastic material 31 on the solid holding cylinder 30 provided on the front end side of the air mixing casing 20 (see FIG. 1). In any case, before the blowing material P pressed and compressed on the front end side of the compression casing 10 is pushed out into the air mixing casing 20, the elastic material 31 adheres to the periphery of the blowing material P. become.

  The solid holding cylinder 30 in the illustrated example includes a storage case 32 that is detachably fixed to the tip of the compression casing 10, and the elastic material 31 is stored in the storage case 32 in a replaceable manner (FIGS. 5 to 7). reference).

  The storage case 32 is screwed to the connection flange 13 provided at the tip of the compression casing 10 with a connection bolt 14 (see FIG. 5B). Each part of the storage case 32 includes a curved support part 32A that supports the bottom part of the elastic member 31, and a pair of swinging parts that are swingably provided at the left and right ends of the support part 32A and fix the upper part of the elastic member 31. And a fixing portion 32B (see FIG. 5A).

  When the elastic material 31 is accommodated in the support portion 32A, the left and right fixing portions 32B are closed and connected at the upper portion of the elastic material 31, the solid holding cylinder 30 with the elastic material 31 mounted is completed (FIG. 7 (a)). reference). The spray material P sent by the compression rotary blade body 12 in the compression casing 10 is compressed inside the elastic material 31 of the solid holding cylinder 30 (see FIG. 1).

  The illustrated elastic material 31 is formed by a plurality of elastic materials 31 formed in an annular shape. And these elastic materials 31 are superposed | polymerized and accommodated in the storage case 32 (refer FIG. 5 (B)). Further, a dend bolt 31B is provided at the upper end of each elastic member 31, and the position of each elastic member 31 stored in the storage case 32 can be adjusted (see FIG. 6 (a)).

  In the present invention, the plurality of elastic members 31 are stored in the storage case 32 by the following procedure. First, the fixing portion 32B of the storage case 32 is opened, and the elastic material 31 is collectively supported by the support portion 32A (see FIG. 5A). At this time, the storage case 32 is fixed to the connecting flange 13 of the compression casing 10 (see FIG. 5B).

  Next, the fixing portion 32B of the storage case 32 is closed and connected, and the position of each elastic member 31 is adjusted with a dented bolt 31B (see FIG. 6 (A)). At this time, the pressing bolt 15 provided on the connecting flange 13 is tightened to crimp the side surface of each elastic material 31 (see FIG. 6B). A crimping plate 15 </ b> A that contacts the elastic material 31 is provided at the tip of the push bolt 15.

  In this way, the vertical position of the elastic material 31 is adjusted by the denting bolt 31B (see FIG. 7 (a)), and the adjustment of the overlapping direction of the elastic material 31 is performed by the push bolt 15 (FIG. 7 (b)). reference). Therefore, the position adjustment of each elastic member 31 is performed by the push bolt 15 and the dented bolt 31B.

  Moreover, the protrusion 31A which protrudes along an inner periphery is formed in the elastic material 31 piled up several sheets (refer FIG.7 (B)). The illustrated protrusion 31 </ b> A is formed by separately forming an annular elastic material 31 having a different inner diameter, and forming an appropriate number of these elastic materials 31 to form the protrusion 31 </ b> A inside the annular elastic material 31. By forming such a protrusion 31A, the backflow of compressed air is strongly prevented. At this time, the material of the elastic material 31 forming the protrusion 31 </ b> A is higher in hardness than the other elastic materials 31.

  In the present invention, the configuration of the compression casing 10, the air mixing casing 20, the solid holding cylinder 30, and the like is not limited to the illustrated configuration, and design changes within a range that does not change the gist of the present invention. Can be done freely.

P Spray material 1 Hopper 10 Compression casing 11 Input port 12 Compression rotary blade body 13 Connection flange 14 Connection bolt 15 Push bolt 15A Crimp plate 20 Air mixing casing 21 Closure mechanism 22 Rotary blade body 23 Air supply port 24 Discharge Outlet 30 Solid holding cylinder 31 Elastic material 31A Projection 31B Denden bolt 32 Storage case 32A Support part 32B Fixing part 40 Transport cylinder

In order to achieve the above-mentioned object, the first means in the present invention is to continuously feed the spray material P such as concrete or mortar into the compression casing 10 and press and harden it inside the front end side of the compression casing 10. The compressed spray material P is extruded into the air mixing casing 20 provided outside the front end side of the compression casing 10, and the spray material P loosened in the air mixing casing 20 is compressed air. In the compression sprayer configured to be sent out by pressure , a solid holding cylinder 30 is detachably attached to the tip of the compression casing 10, and a plurality of thin elastic members 31 having an annular shape are formed on the solid holding cylinder 30. like with overlapping, superposed a plurality of elastic members 31 arranged to integrate and pressed, the spray material P that has been compacted is the air mixing casing 2 Before being extruded within, lies in the structure as the elastic member 31 comes into close contact with the periphery of the spray material P.

The elastic member 31 of the second means has an annular protrusion 31A protruding from an annular inner peripheral surface.

  Replacing the elastic material 31 is configured such that the solid holding cylinder 30 is detachably attached to the distal end portion of the compression casing 10 and an annular elastic material 31 is detachably disposed on the solid holding cylinder 30. Can be easily performed. Therefore, when the elastic material 31 is consumed, the replacement work with the new elastic material 31 is facilitated.

  The elastic material 31 is configured such that a plurality of thin elastic materials 31 having an annular shape are stacked, and the plurality of stacked elastic materials 31 are pressed and integrated, so that when the elastic material 31 is replaced, Then, it becomes possible to select and replace the elastic material 31 of the consumed part. As a result, reasonable maintenance can be performed.

Since the elastic member 31 has the annular protrusion 31A protruding from the annular inner peripheral surface as in claim 2, the protrusion 31A further sprays from the elastic member 31 in close contact with the spraying material P. It can bite into the material P and prevent the backflow of compressed air more reliably.

Claims (4)

A spray material such as concrete or mortar is continuously fed into the compression casing and pressed inside the front end side of the compression casing, and the pressed spray material is provided outside the front end side of the compression casing. In the compression spraying machine configured to push out into the air mixing casing and to blow out the blowing material loosened in the air mixing casing at the pressure of the compressed air,
An elastic material is annularly arranged on the front end side of the compression casing, and the elastic material comes into close contact with the periphery of the blowing material before the pressed blowing material is pushed into the air mixing casing. A compression sprayer characterized by being configured as described above.   The compression sprayer according to claim 1, wherein a solid holding cylinder is detachably attached to a front end portion of the compression casing, and the elastic material having an annular shape is detachably disposed on the solid holding cylinder.   3. The compression spray according to claim 2, wherein the elastic material is configured such that a plurality of thin elastic materials having an annular shape are stacked, and the plurality of stacked elastic materials are pressed and integrated by the solid holding cylinder. Machine.   The compression spray machine according to any one of claims 1 to 3, wherein the elastic member has an annular ridge protruding from an annular inner peripheral surface.

Images