CA2209283A1 - Method of filling adhesive into adhesive injection apparatus and strainer for adhesive injection apparatus - Google Patents
Method of filling adhesive into adhesive injection apparatus and strainer for adhesive injection apparatusInfo
- Publication number
- CA2209283A1 CA2209283A1 CA 2209283 CA2209283A CA2209283A1 CA 2209283 A1 CA2209283 A1 CA 2209283A1 CA 2209283 CA2209283 CA 2209283 CA 2209283 A CA2209283 A CA 2209283A CA 2209283 A1 CA2209283 A1 CA 2209283A1
- Authority
- CA
- Canada
- Prior art keywords
- adhesive
- injection apparatus
- strainer
- adhesive injection
- connection portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000853 adhesive Substances 0.000 title claims abstract description 218
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 218
- 238000002347 injection Methods 0.000 title claims abstract description 108
- 239000007924 injection Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 24
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000002184 metal Substances 0.000 description 11
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Coating Apparatus (AREA)
Abstract
A method of filling an adhesive into an adhesive injection apparatus comprising the steps of: preparing an adhesive injection apparatus, an adhesive injection pump, and a strainer provided with a filter mounted in the inside of a hollow body of the strainer;
connecting the strainer between the adhesive injection apparatus and the adhesive injection pump; and injecting an adhesive sent out from the adhesive injection pump into the strainer so that the adhesive is filled into the adhesive injection apparatus after the adhesive has passed through the filter.
connecting the strainer between the adhesive injection apparatus and the adhesive injection pump; and injecting an adhesive sent out from the adhesive injection pump into the strainer so that the adhesive is filled into the adhesive injection apparatus after the adhesive has passed through the filter.
Description
METHOD OF FILLING ADHESIVE INTO ADHESIVE INJECTION APPARATUS
AND STRAINER FOR ADHESIVE INJECTION APPARATUS
BACKGROUND OF THE INVENTION
The present invention relates to a method of filling an adhesive into an adhesive injection apparatus which is used for an adhesive injection method suitable for mending cracks generated in a concrete structure, a mortar structure, or the like.
As the method of mending cracks generated in a concrete structure, a mortar structure, or the like, such a method that an adhesive of synthetic resin such as epoxy resin, unsaturated polyester resin, or the like is injected into cracks is well known.
As the mending method using adhesive injection, formally, there was such a method (Japanese Patent No. 251791) comprising the steps of attaching pipes on cracks at suitable intervals, sealing portions except the injection nozzle attachment position, connecting the injection nozzle to an injection pump after solidification of a .~e~1i ng material, and injecting an adhesive.
In this method, however, there were some difficulties in work.
Recently, therefore, there are known a mending method proposed in Japanese Patent No. 1558990 in which when an adhesive is injected into cracks or the like generated in a structure, the adhesive is stored in adhesive reservoir tubes provided in desirable positions in a range from an injection nozzle to a send-out side hose of an adhesive injection pump so that adhesive injection pressure acting on the cracks or the like in the structure is relieved and the stored adhesive is injected on the basis of a lasting change of the pressure of the tubes; another mending method proposed in Japanese Patent No. 1566024 in which an adhesive is filled in advance into a tube acting so as to press the adhesive filled therein, an adhesive inlet/outlet port is closed with a check valve, and then the tube is connected to an injection pipe attached to adhesive injecting portions such as cracks or the like so that the adhesive inlet/outlet is opened and the adhesive is injected into the cracks or the like owing to a lasting change of the pressure of the tube; and so on.
As the apparatus to be used in the foregoing methods, Japanese Patent No. 1537261 proposes an adhesive injection apparatus in which one end of an adhesive reservoir tube is connected and fixed to one end of an injection pipe having an injection port corresponding to cracks or the like and having, at its other end, an attachment washer, the other end of the adhesive reservoir tube is connected and fixed to another pipe to be connected to a send-out side (hose side) of an adhesive injection pump, and a check valve is provided on the latter pipe side. Further, Japanese Patent No. 1566024 and No. 1635377 propose an adhesive injection apparatus in which an attachment port having, at its one end, an attachment washer is connected to one end of an adhesive reservoir tube through a connection port for connection of the attachment port, and a valve system for releasing its closed state when the connection port and the attachment port are connected to each other. Moreover, Japanese Patent No. 1716183 proposes another adhesive injection apparatus.
Although these new proposals can provide an extremely remarkable effect in mending cracks in the structures, there are generated some problems in the process of the method.
~ hen an adhesive is injected into an adhesive injection apparatus, generally, a pedal-operated pump is used as an adhesive injector. This pump is set in a construction site in a working environment where foreign matters such as rubbish or the like are scattered, so that the foreign matters are apt to adhere to an adhesive application portion of the pump so as to be mixed into the adhesive. If an adhesive containing such foreign matters mixed therein is injected into the adhesive injeotion apparatus, the foreign matters may block a check valve for preventing back-flow of the adhesive so that the check valve cannot perform its function to cause leakage of the adhesive.
Figs. 10 and 11 show a conventional method of filling an adhesive into an adhesive injection apparatus for the purpose of explaining an example of a problem to be solved in the method.
As shown in Fig. 11, an adhesive injection apparatus 21 is constituted by an adhesive reservoir tube 30 which has, at its one end, a connection portion 23 to be connected to an attachment washer 22, and, at its other end, a connection portion ~5 to be connected to an adhesive send-out side of an adhesive injector 24.
A check valve C, for example, as shown in Fig. 10, is provided in the inside of the connection portion 25. The connection portion 22 of the adhesive reservoir tube 30 is fixed to a position of a crack 27 of a structure 20 through the attachment washer 22. Thereafter, the connection portion 25 is connected to a send-out side hose 28 of the adhesive injector 24 through a cock 29. When the adhesive injector 24 is operated so as to inject an adhesive into the adhesive injection apparatus, pressure is applied to the valve C in the direction of an arrow from an adhesive inlet port B of the adhesive injection apparatus A as shown in Fig. 10, so that the valve C is brought into an opened state. If foreign matters D
mixed in the adhesive stay in the valve C, however, the valve C can not be closed yet after injection of the adhesive so that the adhesive leaks out.
SUMMARY OF THE INV~N-lION
An object of the present invention is to solve the foregoing conventional problems by using the following means.
In order to solve the above problems, according to a first aspect of the present invention, provided is an adhesive injection method as follows.
First, a strainer for an adhesive injection apparatus is interposed between the adhesive injection apparatus and an adhesive injector for filling an adhesive into the adhesive injection apparatus and an adhesive injection pump.
More specifically, an adhesive injection apparatus, an adhesive injector, and a strainer provided with a filter mounted in the inside of a hollow body of the strainer are prepared; the strainer is connected between the adhesive injection apparatus and the adhesive injector; and an adhesive sent out from the adhesive injector is injected into the strainer so that the adhesive is filled into the adhesive injection apparatus after the adhesive has passed through the filter.
Further, according to another aspect of the present invention, provided is a strainer for use in the above adhesive injection method, which comprises: a hollow body; a first connection portion formed at an one end of the hollow body so as to be connected to an adhesive inlet port of an adhesive injection apparatus; a second connection portion formed at the other end of the hollow body so as to be connected to an adhesive send-out port of an adhesive injector, the second connection portion being communicated with the first connection portion through the hollow body; and a mesh filter provided in the inside of the hollow body.
Further, according to a further aspect of the present invention, provided is a strainer for use in the above adhesive injection method, which comprises: a hollow body; a first connection portion formed at an one end of the hollow body so as to be connected to an adhesive inlet port of an adhesive i~njection apparatus; a second connection portion formed at the other end of the hollow body so as to be connected to an adhesive send-out port of an adhesive injector, the second connection portion being communicated with the first connection portion through the hollow body; and a mesh filter provided in the inside of the hollow body at an adhesive inlet side thereof, the mesh filter being formed in a cylindrical shape with its one end closed by a spacer.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a lower-half sectional front view showing an embodiment of a strainer to be used for the adhesive injection apparatus;
Fig. 2 is a left side view of Fig. 1;
Fig. 3 is a right side view of Fig. 1;
Fig. 4 is a cross-sectional view taken on line A-A of Fig. 1;
Fig. 5 is a cross-sectional view taken on line B-B of Fig. 1;
Figs. 6A - 6C are perspective views showing various embodiments of a mesh filter having a metal gauge;
Fig. 7 is a schematic view showing an embodiment of the method of filling an adhesive into the adhesive injection apparatus;
Fig. 8 is a schematic view showing another embodiment of the method of filling an adhesive into the adhesive injection apparatus;
Fig. 9 is a schematic view showing an embodiment i~n which a plurality of adhesive injection apparatuses are attached along cracks;
Fig. 10 is a sectional view showing an embodiment of a check valve; and Fig. 11 is a schematic view showing an example of the conventional method of filling an adhesive into the adhesive injection apparatus.
DETAILED DESCRIPTION OF THE PR~ R~ EMBODIMENT
Now, embodiments of the present invention will be described with reference to the accompani-ed drawings.
Fig. 1 is a lower-half sectional front view showing an embodiment of a strainer to be used for the adhesive injection apparatus according to the present invention; Fig. 2 is a left side view; Fig. 3 is a right side view; Fig. 4 is a cross-sectional view taken on line A-A of Fig. 1; Fig. 5 is a cross-sectional view taken on line B-B of Fig. 1.
A hollow body 1 is constituted by body members 2 and 3 disposed at the adhesive injector side and the adhesive injection apparatus side respectively. The body member 2 has a connection portion 4 to be connected to a connection port of an adhesive injector at the adhesive send-out port side. The body member 3 has a connection portion 5 to be connected to an adhesive injection port of an adhesive injection apparatus. The body members 2 and 3 are fitted to each other through fitting circumferentia-~ edges 6 and 7 so as to be integrated with each other to thereby constitute the hollow cylindrical body 1. The connection portions 4 and 5 are throughout communicated with each other to form a pipe portio.
Here, the hollow body 1 has an inner diameter so that an air gap 12 can be held between the inner diameter and an outer diameter of a cylindrical mesh filter 8 (which will be described later) to be attached in the inside of the body member 2. The connection portion 4 has a diameter which conforms to the connection portion of the adhesive injector on the adhesive send-out port side, and the connection portion 5 has a diameter which conforms to a connection portion of the adhesive injection apparatus on the adhesive inlet port side.
The mesh filter 8 is configured such that a cylindrical metal gauge 9 is covered, at its one end, with a cap-like spacer 10 so as to be closed. The metal gauge 9 is attached in a manner so that the other end of the mesh gauge 9 is nipped in a nip portion 11 formed in the body member 2 of the hollow body 1 on the adhesive inlet port side.
In this embodiment, the body members 2 and 3 are integrated with each other after the mesh filter 8 has been attached by being nipped in the nip portion 11 formed in the inside of the body member 2.
It is a matter of course that the shape of the hollou body 1, the method of attaching the mesh filter 8 in the inside~of the hollow body 1, and so on, are not limited to those described in this embodiment. That is, the hollow body 1 may be formed in an integrated structure from the beginning, or the metal gauge 9 of the mesh filter 8 may have any one of various shapes shown in Figs.
6A-6C.
Fig. 6A shows a plate-like metal gauge 9. The metal gauge 9 is mounted at its circumference side along an inner circumferential wall of the hollow body 1 and fixed thereon. Fig. 6B shows a metal gauge 9 which is merely cylindrically wound. One end of the metal gauge 9 is covered with the above-mentioned spacer 10, and the other end thereof is attached to the adhesive inlet port of the hollow body 1. The metal gauge 9 is formed cylindrically so that the area of adhesive passage can be enlarged and the area of foreign matters adhesion can be also enlarged. When the area of foreign matters adhesion is narrow, adhesion of a small quantity of foreign matters makes the adhesive passage wrong.
It is preferable to select the mesh of the metal gauge 9 to be about JIS 80, suitably, about 60 - 200 taking the viscosity of an adhesive, the size of a foreign matter, and so on, into consideration.
The thus formed strainer for the adhesive injection apparatus is used in such a manner as follows.
Fig. 7 is an embodiment in which an adhesive send-out side hose of an adhesive injection pump 24 is connected to a~ adhesive inlet port of an adhesive injection apparatus 21 attached to a crack 27 of a structure 20 through a washer 22, and when an adhesive is injected from the adhesive injection pump 24 into the adhesive injection apparatus 21, a strainer 26 is interposed between the adhesive injection pump 24 and the adhesive injection apparatus 21.
The adhesive injection apparatus 21 is constituted by an adhesive reservoir tube 30 having, at its one end, a connection portion 23 to be connected to the attachment washer 22 and having, at its other end, a connection portion 25 to be connected to a connection portion 5 of the strainer 26. A check valve is provided in the inside of the adhesive reservoir tube 30 on the connection portion 25 side, for example, as shown in Fig. lO.
The adhesive injection apparatus 21 is fixed in the position of the crack 27 of the structure 20 through the attachment washer 22. Portions except the attachment position of the adhesive injection apparatus 21 is sealed with a putty-like ~eAl jng material. Fig. 9 shows a state where a plurality of adhesive injection apparatuses 21 are provided along the cracks 27.
As the adhesive injection pump 24, a pedal-operated pump is used.
An adhesive is sent out through a hose 28.
The strainer 26 is configured as described above. A
connection portion 4 is connected to the send-out side hose 28 of the adhesive injection pump 24 through a cock 29, and the connection portion 5 is connected to the adhesive inlet port side connection portion 25 of the adhesive injection apparatus 21. When the connection portion 5 of the strainer 26 is connected to the connection portion 25 of the adhesive injection apparatus 21, the check valve is opened so that the adhesive injection apparatus 21 and the strainer 26 are communicated with each other to form a pipe portion. The connection of the connection portions may be carried out water tightly by a known method.
Thereafter, the adhesive is sent out from the adhesive injection pump 24 and injected into the strainer 26. The adhesive is passed through a mesh filter 8 (Fig. 1) attached in the inside of the strainer 26 and injected into the adhesive injection apparatus 21 through an air gap 12 (Fig. 1). Foreign matters are removed from the adhesive when the adhesive pac~cec through the mesh filter 8. The adhesive is injected into the crack 27 of the structure 20 through the adhesive injection apparatus 21. When a predetermined quantity of adhesive is injected so that predetermined pressure is applied to the crack 27, the adhesive reservoir tube 30 constituting the adhesive injection apparatus 21 is expanded to thereby relieve the pressure acting on the crack 27 and the adhesive is stored. After injection of a required quantity of adhesive, the strainer 26 is removed. At this time, the check valve attached in the adhesive injection apparatus 21 is operated so as to prevent back flow and leakjng out of the adhesive. The adhesive is penetrated into a deep portion of the crack~27 by the compression force of the tube 30. Since foreign matters in the adhesive are removed when the adhesive p~-cses through the strainer 26, any obstacle, for example, lodging of the foreign matters in the check valve, is not caused.
Fig. 8 shows an embodiment in which an adhesive send-out side hose of an adhesive injection pump 24 is connected to an adhesive injection apparatus 31 having an adhesive inlét port which acts also as an adhesive outlet port, and a strainer 26 is interposed betueen the adhesive injection apparatus 31 and the adhesive injection pump 24 when the adhesive is injected from the adhesive injection pump 24 into the adhesive injection apparatus 31.
The adhesive injection apparatus 31 is constituted by an adhesive reservoir tube 36 having a connection portion 33 to be connected to a washer and to be connected to a connection portion 5 of a strainer 26. The other end 32 of the adhesive reservoir tube 36 is closed. A check valve is provided in the inside of the adhesive reservoir tube 36 at the connection portion 33 side, for example, as shown in Fig. 10.
One connection portion 5 of the strainer 26 is connected to the connection portion 33 of the adhesive injection apparatus 31, and the other connection portion 4 of the strainer 26 is connected to the send-out side hose 28 of an adhesive injection pump 24 through a cock 29.
Thereafter, an adhesive is sent out from the adhesive injection pump 24 and injected into the strainer 26. Since the adhesive paC~cec through a mesh filter 8 (Fig. 1) attached in the inside of the strainer 26, the adhesive is injected into the adhesive injection apparatus 31 after foreign matters mixed in the adhesive have been removed by the mesh filter 8. When the adhesive is injected, the tube 30 is expanded. When a predetermined quantity of adhesive has been injected after the expansion of the tube 30, the injection is stopped and the strainer 26 is removed. At this time, the check valve attached in the adhesive injection apparatus 31 is operated so as to prevent the adhesive from le~king out due to back flow. Since foreign matters in the adhesive are removed by the passage through the strainer 26, any obstacle, for example, lodging of the foreign matters in the check valve system, is not caused.
In the adhesive injection apparatus 31, the check valve is opened in response to the connection of the connection portion 33 to the washer attached to a crack of a structure, and the adhesive is injected into the crack by the pressure of the tube 30.
Being configured as described above, the present invention provides effects as follows.
That is, since an adhesive can be injected into the adhesive injection apparatus through the filter attached in the strainer, no foreign matters can be entered into the adhesive injection apparatus. Accordingly, it is possible to solve the conventional problem that foreign matters are lodged in the check valve to reduce the function of the check valve to thereby allow the adhesive to leak out.
Further, since the strainer can be connected to the injection inlet port side connection portion of the adhesive injection apparatus, the operation of adhesive injection from the adhesive injection pump into the adhesive injection apparatus can be carried out consistently.
Further, since the metal gauge is formed into a cylindrical shape in the mesh filter, the area of adhesive passage through the mesh filter is enlarged to make the passing of the adhesive easy and the area of adhesion of foreign matters to be removed can be enlarged.
AND STRAINER FOR ADHESIVE INJECTION APPARATUS
BACKGROUND OF THE INVENTION
The present invention relates to a method of filling an adhesive into an adhesive injection apparatus which is used for an adhesive injection method suitable for mending cracks generated in a concrete structure, a mortar structure, or the like.
As the method of mending cracks generated in a concrete structure, a mortar structure, or the like, such a method that an adhesive of synthetic resin such as epoxy resin, unsaturated polyester resin, or the like is injected into cracks is well known.
As the mending method using adhesive injection, formally, there was such a method (Japanese Patent No. 251791) comprising the steps of attaching pipes on cracks at suitable intervals, sealing portions except the injection nozzle attachment position, connecting the injection nozzle to an injection pump after solidification of a .~e~1i ng material, and injecting an adhesive.
In this method, however, there were some difficulties in work.
Recently, therefore, there are known a mending method proposed in Japanese Patent No. 1558990 in which when an adhesive is injected into cracks or the like generated in a structure, the adhesive is stored in adhesive reservoir tubes provided in desirable positions in a range from an injection nozzle to a send-out side hose of an adhesive injection pump so that adhesive injection pressure acting on the cracks or the like in the structure is relieved and the stored adhesive is injected on the basis of a lasting change of the pressure of the tubes; another mending method proposed in Japanese Patent No. 1566024 in which an adhesive is filled in advance into a tube acting so as to press the adhesive filled therein, an adhesive inlet/outlet port is closed with a check valve, and then the tube is connected to an injection pipe attached to adhesive injecting portions such as cracks or the like so that the adhesive inlet/outlet is opened and the adhesive is injected into the cracks or the like owing to a lasting change of the pressure of the tube; and so on.
As the apparatus to be used in the foregoing methods, Japanese Patent No. 1537261 proposes an adhesive injection apparatus in which one end of an adhesive reservoir tube is connected and fixed to one end of an injection pipe having an injection port corresponding to cracks or the like and having, at its other end, an attachment washer, the other end of the adhesive reservoir tube is connected and fixed to another pipe to be connected to a send-out side (hose side) of an adhesive injection pump, and a check valve is provided on the latter pipe side. Further, Japanese Patent No. 1566024 and No. 1635377 propose an adhesive injection apparatus in which an attachment port having, at its one end, an attachment washer is connected to one end of an adhesive reservoir tube through a connection port for connection of the attachment port, and a valve system for releasing its closed state when the connection port and the attachment port are connected to each other. Moreover, Japanese Patent No. 1716183 proposes another adhesive injection apparatus.
Although these new proposals can provide an extremely remarkable effect in mending cracks in the structures, there are generated some problems in the process of the method.
~ hen an adhesive is injected into an adhesive injection apparatus, generally, a pedal-operated pump is used as an adhesive injector. This pump is set in a construction site in a working environment where foreign matters such as rubbish or the like are scattered, so that the foreign matters are apt to adhere to an adhesive application portion of the pump so as to be mixed into the adhesive. If an adhesive containing such foreign matters mixed therein is injected into the adhesive injeotion apparatus, the foreign matters may block a check valve for preventing back-flow of the adhesive so that the check valve cannot perform its function to cause leakage of the adhesive.
Figs. 10 and 11 show a conventional method of filling an adhesive into an adhesive injection apparatus for the purpose of explaining an example of a problem to be solved in the method.
As shown in Fig. 11, an adhesive injection apparatus 21 is constituted by an adhesive reservoir tube 30 which has, at its one end, a connection portion 23 to be connected to an attachment washer 22, and, at its other end, a connection portion ~5 to be connected to an adhesive send-out side of an adhesive injector 24.
A check valve C, for example, as shown in Fig. 10, is provided in the inside of the connection portion 25. The connection portion 22 of the adhesive reservoir tube 30 is fixed to a position of a crack 27 of a structure 20 through the attachment washer 22. Thereafter, the connection portion 25 is connected to a send-out side hose 28 of the adhesive injector 24 through a cock 29. When the adhesive injector 24 is operated so as to inject an adhesive into the adhesive injection apparatus, pressure is applied to the valve C in the direction of an arrow from an adhesive inlet port B of the adhesive injection apparatus A as shown in Fig. 10, so that the valve C is brought into an opened state. If foreign matters D
mixed in the adhesive stay in the valve C, however, the valve C can not be closed yet after injection of the adhesive so that the adhesive leaks out.
SUMMARY OF THE INV~N-lION
An object of the present invention is to solve the foregoing conventional problems by using the following means.
In order to solve the above problems, according to a first aspect of the present invention, provided is an adhesive injection method as follows.
First, a strainer for an adhesive injection apparatus is interposed between the adhesive injection apparatus and an adhesive injector for filling an adhesive into the adhesive injection apparatus and an adhesive injection pump.
More specifically, an adhesive injection apparatus, an adhesive injector, and a strainer provided with a filter mounted in the inside of a hollow body of the strainer are prepared; the strainer is connected between the adhesive injection apparatus and the adhesive injector; and an adhesive sent out from the adhesive injector is injected into the strainer so that the adhesive is filled into the adhesive injection apparatus after the adhesive has passed through the filter.
Further, according to another aspect of the present invention, provided is a strainer for use in the above adhesive injection method, which comprises: a hollow body; a first connection portion formed at an one end of the hollow body so as to be connected to an adhesive inlet port of an adhesive injection apparatus; a second connection portion formed at the other end of the hollow body so as to be connected to an adhesive send-out port of an adhesive injector, the second connection portion being communicated with the first connection portion through the hollow body; and a mesh filter provided in the inside of the hollow body.
Further, according to a further aspect of the present invention, provided is a strainer for use in the above adhesive injection method, which comprises: a hollow body; a first connection portion formed at an one end of the hollow body so as to be connected to an adhesive inlet port of an adhesive i~njection apparatus; a second connection portion formed at the other end of the hollow body so as to be connected to an adhesive send-out port of an adhesive injector, the second connection portion being communicated with the first connection portion through the hollow body; and a mesh filter provided in the inside of the hollow body at an adhesive inlet side thereof, the mesh filter being formed in a cylindrical shape with its one end closed by a spacer.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a lower-half sectional front view showing an embodiment of a strainer to be used for the adhesive injection apparatus;
Fig. 2 is a left side view of Fig. 1;
Fig. 3 is a right side view of Fig. 1;
Fig. 4 is a cross-sectional view taken on line A-A of Fig. 1;
Fig. 5 is a cross-sectional view taken on line B-B of Fig. 1;
Figs. 6A - 6C are perspective views showing various embodiments of a mesh filter having a metal gauge;
Fig. 7 is a schematic view showing an embodiment of the method of filling an adhesive into the adhesive injection apparatus;
Fig. 8 is a schematic view showing another embodiment of the method of filling an adhesive into the adhesive injection apparatus;
Fig. 9 is a schematic view showing an embodiment i~n which a plurality of adhesive injection apparatuses are attached along cracks;
Fig. 10 is a sectional view showing an embodiment of a check valve; and Fig. 11 is a schematic view showing an example of the conventional method of filling an adhesive into the adhesive injection apparatus.
DETAILED DESCRIPTION OF THE PR~ R~ EMBODIMENT
Now, embodiments of the present invention will be described with reference to the accompani-ed drawings.
Fig. 1 is a lower-half sectional front view showing an embodiment of a strainer to be used for the adhesive injection apparatus according to the present invention; Fig. 2 is a left side view; Fig. 3 is a right side view; Fig. 4 is a cross-sectional view taken on line A-A of Fig. 1; Fig. 5 is a cross-sectional view taken on line B-B of Fig. 1.
A hollow body 1 is constituted by body members 2 and 3 disposed at the adhesive injector side and the adhesive injection apparatus side respectively. The body member 2 has a connection portion 4 to be connected to a connection port of an adhesive injector at the adhesive send-out port side. The body member 3 has a connection portion 5 to be connected to an adhesive injection port of an adhesive injection apparatus. The body members 2 and 3 are fitted to each other through fitting circumferentia-~ edges 6 and 7 so as to be integrated with each other to thereby constitute the hollow cylindrical body 1. The connection portions 4 and 5 are throughout communicated with each other to form a pipe portio.
Here, the hollow body 1 has an inner diameter so that an air gap 12 can be held between the inner diameter and an outer diameter of a cylindrical mesh filter 8 (which will be described later) to be attached in the inside of the body member 2. The connection portion 4 has a diameter which conforms to the connection portion of the adhesive injector on the adhesive send-out port side, and the connection portion 5 has a diameter which conforms to a connection portion of the adhesive injection apparatus on the adhesive inlet port side.
The mesh filter 8 is configured such that a cylindrical metal gauge 9 is covered, at its one end, with a cap-like spacer 10 so as to be closed. The metal gauge 9 is attached in a manner so that the other end of the mesh gauge 9 is nipped in a nip portion 11 formed in the body member 2 of the hollow body 1 on the adhesive inlet port side.
In this embodiment, the body members 2 and 3 are integrated with each other after the mesh filter 8 has been attached by being nipped in the nip portion 11 formed in the inside of the body member 2.
It is a matter of course that the shape of the hollou body 1, the method of attaching the mesh filter 8 in the inside~of the hollow body 1, and so on, are not limited to those described in this embodiment. That is, the hollow body 1 may be formed in an integrated structure from the beginning, or the metal gauge 9 of the mesh filter 8 may have any one of various shapes shown in Figs.
6A-6C.
Fig. 6A shows a plate-like metal gauge 9. The metal gauge 9 is mounted at its circumference side along an inner circumferential wall of the hollow body 1 and fixed thereon. Fig. 6B shows a metal gauge 9 which is merely cylindrically wound. One end of the metal gauge 9 is covered with the above-mentioned spacer 10, and the other end thereof is attached to the adhesive inlet port of the hollow body 1. The metal gauge 9 is formed cylindrically so that the area of adhesive passage can be enlarged and the area of foreign matters adhesion can be also enlarged. When the area of foreign matters adhesion is narrow, adhesion of a small quantity of foreign matters makes the adhesive passage wrong.
It is preferable to select the mesh of the metal gauge 9 to be about JIS 80, suitably, about 60 - 200 taking the viscosity of an adhesive, the size of a foreign matter, and so on, into consideration.
The thus formed strainer for the adhesive injection apparatus is used in such a manner as follows.
Fig. 7 is an embodiment in which an adhesive send-out side hose of an adhesive injection pump 24 is connected to a~ adhesive inlet port of an adhesive injection apparatus 21 attached to a crack 27 of a structure 20 through a washer 22, and when an adhesive is injected from the adhesive injection pump 24 into the adhesive injection apparatus 21, a strainer 26 is interposed between the adhesive injection pump 24 and the adhesive injection apparatus 21.
The adhesive injection apparatus 21 is constituted by an adhesive reservoir tube 30 having, at its one end, a connection portion 23 to be connected to the attachment washer 22 and having, at its other end, a connection portion 25 to be connected to a connection portion 5 of the strainer 26. A check valve is provided in the inside of the adhesive reservoir tube 30 on the connection portion 25 side, for example, as shown in Fig. lO.
The adhesive injection apparatus 21 is fixed in the position of the crack 27 of the structure 20 through the attachment washer 22. Portions except the attachment position of the adhesive injection apparatus 21 is sealed with a putty-like ~eAl jng material. Fig. 9 shows a state where a plurality of adhesive injection apparatuses 21 are provided along the cracks 27.
As the adhesive injection pump 24, a pedal-operated pump is used.
An adhesive is sent out through a hose 28.
The strainer 26 is configured as described above. A
connection portion 4 is connected to the send-out side hose 28 of the adhesive injection pump 24 through a cock 29, and the connection portion 5 is connected to the adhesive inlet port side connection portion 25 of the adhesive injection apparatus 21. When the connection portion 5 of the strainer 26 is connected to the connection portion 25 of the adhesive injection apparatus 21, the check valve is opened so that the adhesive injection apparatus 21 and the strainer 26 are communicated with each other to form a pipe portion. The connection of the connection portions may be carried out water tightly by a known method.
Thereafter, the adhesive is sent out from the adhesive injection pump 24 and injected into the strainer 26. The adhesive is passed through a mesh filter 8 (Fig. 1) attached in the inside of the strainer 26 and injected into the adhesive injection apparatus 21 through an air gap 12 (Fig. 1). Foreign matters are removed from the adhesive when the adhesive pac~cec through the mesh filter 8. The adhesive is injected into the crack 27 of the structure 20 through the adhesive injection apparatus 21. When a predetermined quantity of adhesive is injected so that predetermined pressure is applied to the crack 27, the adhesive reservoir tube 30 constituting the adhesive injection apparatus 21 is expanded to thereby relieve the pressure acting on the crack 27 and the adhesive is stored. After injection of a required quantity of adhesive, the strainer 26 is removed. At this time, the check valve attached in the adhesive injection apparatus 21 is operated so as to prevent back flow and leakjng out of the adhesive. The adhesive is penetrated into a deep portion of the crack~27 by the compression force of the tube 30. Since foreign matters in the adhesive are removed when the adhesive p~-cses through the strainer 26, any obstacle, for example, lodging of the foreign matters in the check valve, is not caused.
Fig. 8 shows an embodiment in which an adhesive send-out side hose of an adhesive injection pump 24 is connected to an adhesive injection apparatus 31 having an adhesive inlét port which acts also as an adhesive outlet port, and a strainer 26 is interposed betueen the adhesive injection apparatus 31 and the adhesive injection pump 24 when the adhesive is injected from the adhesive injection pump 24 into the adhesive injection apparatus 31.
The adhesive injection apparatus 31 is constituted by an adhesive reservoir tube 36 having a connection portion 33 to be connected to a washer and to be connected to a connection portion 5 of a strainer 26. The other end 32 of the adhesive reservoir tube 36 is closed. A check valve is provided in the inside of the adhesive reservoir tube 36 at the connection portion 33 side, for example, as shown in Fig. 10.
One connection portion 5 of the strainer 26 is connected to the connection portion 33 of the adhesive injection apparatus 31, and the other connection portion 4 of the strainer 26 is connected to the send-out side hose 28 of an adhesive injection pump 24 through a cock 29.
Thereafter, an adhesive is sent out from the adhesive injection pump 24 and injected into the strainer 26. Since the adhesive paC~cec through a mesh filter 8 (Fig. 1) attached in the inside of the strainer 26, the adhesive is injected into the adhesive injection apparatus 31 after foreign matters mixed in the adhesive have been removed by the mesh filter 8. When the adhesive is injected, the tube 30 is expanded. When a predetermined quantity of adhesive has been injected after the expansion of the tube 30, the injection is stopped and the strainer 26 is removed. At this time, the check valve attached in the adhesive injection apparatus 31 is operated so as to prevent the adhesive from le~king out due to back flow. Since foreign matters in the adhesive are removed by the passage through the strainer 26, any obstacle, for example, lodging of the foreign matters in the check valve system, is not caused.
In the adhesive injection apparatus 31, the check valve is opened in response to the connection of the connection portion 33 to the washer attached to a crack of a structure, and the adhesive is injected into the crack by the pressure of the tube 30.
Being configured as described above, the present invention provides effects as follows.
That is, since an adhesive can be injected into the adhesive injection apparatus through the filter attached in the strainer, no foreign matters can be entered into the adhesive injection apparatus. Accordingly, it is possible to solve the conventional problem that foreign matters are lodged in the check valve to reduce the function of the check valve to thereby allow the adhesive to leak out.
Further, since the strainer can be connected to the injection inlet port side connection portion of the adhesive injection apparatus, the operation of adhesive injection from the adhesive injection pump into the adhesive injection apparatus can be carried out consistently.
Further, since the metal gauge is formed into a cylindrical shape in the mesh filter, the area of adhesive passage through the mesh filter is enlarged to make the passing of the adhesive easy and the area of adhesion of foreign matters to be removed can be enlarged.
Claims (3)
1. A method of filling an adhesive into an adhesive injection apparatus comprising the steps of:
preparing an adhesive injection apparatus, an adhesive injection pump, and a strainer provided with a filter mounted in the inside of a hollow body of said strainer;
connecting said strainer between said adhesive injection apparatus and said adhesive injection pump; and injecting an adhesive sent out from said adhesive injection pump into said strainer so that said adhesive is filled into said adhesive injection apparatus after said adhesive has passed through said filter.
preparing an adhesive injection apparatus, an adhesive injection pump, and a strainer provided with a filter mounted in the inside of a hollow body of said strainer;
connecting said strainer between said adhesive injection apparatus and said adhesive injection pump; and injecting an adhesive sent out from said adhesive injection pump into said strainer so that said adhesive is filled into said adhesive injection apparatus after said adhesive has passed through said filter.
2. A strainer comprising:
a hollow body;
a first connection portion formed at an one end of said hollow body so as to be connected to an adhesive inlet port of an adhesive injection apparatus;
a second connection portion formed at the other end of said hollow body so as to be connected to an adhesive send-out port of an adhesive injection pump, said second connection portion being communicated with said first connection portion through said hollow body; and a mesh filter provided in the inside of said hollow body.
a hollow body;
a first connection portion formed at an one end of said hollow body so as to be connected to an adhesive inlet port of an adhesive injection apparatus;
a second connection portion formed at the other end of said hollow body so as to be connected to an adhesive send-out port of an adhesive injection pump, said second connection portion being communicated with said first connection portion through said hollow body; and a mesh filter provided in the inside of said hollow body.
3. A strainer comprising:
a hollow body;
a first connection portion formed at an one end of said hollow body so as to be connected to an adhesive inlet port of an adhesive injection apparatus;
a second connection portion formed at the other end of said hollow body so as to be connected to an adhesive send-out port of an adhesive injection pump, said second connection portion being communicated with said first connection portion through said hollow body; and a mesh filter provided in the inside of said hollow body at an adhesive inlet side thereof, said mesh filter being formed in a cylindrical shape with its one end closed by a spacer.
a hollow body;
a first connection portion formed at an one end of said hollow body so as to be connected to an adhesive inlet port of an adhesive injection apparatus;
a second connection portion formed at the other end of said hollow body so as to be connected to an adhesive send-out port of an adhesive injection pump, said second connection portion being communicated with said first connection portion through said hollow body; and a mesh filter provided in the inside of said hollow body at an adhesive inlet side thereof, said mesh filter being formed in a cylindrical shape with its one end closed by a spacer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24691496A JP2875985B2 (en) | 1996-08-30 | 1996-08-30 | Method for filling adhesive into adhesive injection device and strainer for adhesive injection device |
| JP246914/1996 | 1996-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2209283A1 true CA2209283A1 (en) | 1998-02-28 |
Family
ID=17155636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2209283 Abandoned CA2209283A1 (en) | 1996-08-30 | 1997-06-30 | Method of filling adhesive into adhesive injection apparatus and strainer for adhesive injection apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2875985B2 (en) |
| CA (1) | CA2209283A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9804296L (en) * | 1998-12-11 | 1999-12-20 | Senad Teknikbetong Ab | Method and apparatus for preparing injection mass |
| KR100976846B1 (en) | 2009-06-08 | 2010-08-20 | 주식회사 케이피지 | Packer structure and construction method using the same |
| CN106140569A (en) * | 2015-03-25 | 2016-11-23 | 刘子刚 | A kind of two component mixing and glue injection device |
-
1996
- 1996-08-30 JP JP24691496A patent/JP2875985B2/en not_active Expired - Lifetime
-
1997
- 1997-06-30 CA CA 2209283 patent/CA2209283A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP2875985B2 (en) | 1999-03-31 |
| JPH1072941A (en) | 1998-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |