A polymer mixing grouting gun

Abstract

The present invention provides a polymer mixing grouting gun, comprising a grouting gun body, which is provided with a mixing and stirring system, an airway and a mixing chamber inside, wherein the mixing chamber is arranged at the slurry outlet end of the grouting gun body and is connected with the airway; the grouting gun body is provided with at least two feed ports connected with the mixing chamber, and the feed ports are respectively provided with detachable feed joints; the mixing and stirring system comprises a stirring motor, a motor main shaft connected with the stirring motor, a spiral stirring head detachably connected with the motor main shaft, and a slurry outlet head; the slurry outlet head is detachably connected with the slurry outlet end of the grouting gun body, and the slurry outlet head can be covered with a spiral stirring head; the motor main shaft and / or the spiral stirring head are inserted into the mixing chamber; and a control system is also included. The present invention is a novel multi-component polymer grouting gun that can fully mix the slurry and avoid gun blockage and gun jump.

Description

Technical Field

[0001] The invention relates to the research field of geotechnical engineering grouting technology, and in particular to a two-component polymer spiral mixing grouting gun. Background Art

[0002] The scale of infrastructure construction in my country is huge, and the number of existing and under-construction roads, railways, bridges, dams, tunnels and other infrastructure is also increasing. However, some infrastructure will have some safety hazards due to disrepair, natural erosion and other factors. Taking the existing roads as an example, the main hazards are: road surface delamination, sinking, water accumulation, cracking and other hazards. At present, the most common method to deal with the above-mentioned hazards is polymer grouting reinforcement and repair. As a two-component grouting material, polymer has different requirements for grouting guns during engineering emergency rescue than traditional cement slurry grouting guns. Existing two-component polymer grouting guns often directly mix the two slurries A and B and inject them into the injected medium. This often causes the slurries to be insufficiently mixed and crystallized, affecting the quality of polymer foaming molding. Although there are also studies that add atomizing filters to the A and B material storage chambers, the slurry is too viscous, which often causes gun blockage and gun jump, seriously affecting the progress of engineering emergency rescue construction.

[0003] The prior art discloses a mixing gun for chemical grouting (CN 206642594U), comprising a gun handle, a gun seat, a first feed pipe, a second feed pipe, a collecting pipe, a motor, a grouting pipe, an electric telescopic rod, a grouting tank, a battery and a light tank, wherein the gun seat is installed on the upper end face of the gun handle, the first feed pipe is embedded in the gun seat, the second feed pipe is installed on the lower side of the first feed pipe, the collecting pipe is installed on the left end face of the gun seat, and the motor is installed on the inner side of the gun seat. This design solves the problem that the gun seat and the gun handle of the original grouting gun cannot move, the grouting pipe is installed on the left end face of the collecting pipe, and the electric telescopic rod is installed on the inner side of the grouting pipe. This design solves the problem that the original grouting gun cannot automatically remove the residue on the surface of the grouting pipe, but there is a problem of uneven mixing of the two materials, which will affect the solidification effect of the slurry and the construction quality of the project cannot be guaranteed.

[0004] Therefore, it is urgent to study a new type of two-component polymer grouting gun that can fully mix the slurry and avoid gun blockage and gun jumping. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a polymer mixing grouting gun, which is a novel two-component polymer grouting gun that can fully mix the slurry and avoid gun blockage and gun jump.

[0006] In order to achieve the above-mentioned object, the present invention provides a polymer mixing grouting gun, comprising a grouting gun body, wherein a mixing and stirring system, an air passage and a mixing chamber for mixing and pressurizing slurry are arranged inside the grouting gun body, wherein the mixing chamber is arranged at the slurry outlet end of the grouting gun body and is communicated with the air passage; the grouting gun body is provided with at least two feed ports communicated with the mixing chamber, and feed joints are respectively arranged on the feed ports;

[0007] The mixing and stirring system comprises a stirring motor, a motor main shaft connected to the stirring motor, a spiral stirring head detachably connected to the motor main shaft, and a slurry discharge head for slurry discharge;

[0008] The grouting head is detachably connected to the grouting end of the grouting gun body, and the grouting head can cover the spiral stirring head; the motor main shaft and / or the spiral stirring head are inserted into the mixing chamber;

[0009] It also includes a control system for controlling the start and stop of the stirring motor and the on and off of the airway pressure.

[0010] Preferably, the grouting gun body comprises a grouting gun body and a grouting gun butt, and the mixing and stirring system is arranged inside the grouting gun body.

[0011] Preferably, the air duct includes a first air duct, a second air duct and a third air duct, the first air duct is arranged in the grouting gun butt and extends into the grouting gun body; the second air duct and the third air duct are arranged in the grouting gun body, and one end of the second air duct and the third air duct are respectively connected to the first air duct, and the other end is respectively connected to the mixing chamber.

[0012] Preferably, the feed connectors are respectively provided with control valves for controlling the flow of raw materials.

[0013] Preferably, the feed connector is a right-angle connector or a straight-through connector.

[0014] Preferably, the feed connectors are respectively provided with detachable plugs to facilitate cleaning of residual materials in the feed connectors.

[0015] Preferably, the stirring motor is arranged at the tail of the grouting gun body, so that the grouting gun has a compact structure and a delicate appearance.

[0016] Preferably, the slurry outlet head includes a tube body and a wing plate, one end of the tube body is provided with an external thread connected to the mixing chamber, and the other end is provided with a slurry outlet, and the wing plate is arranged on the outer side wall of the slurry outlet end of the tube body.

[0017] Preferably, the wing plate and the tube body are integrally formed or welded.

[0018] Preferably, the spiral stirring head comprises a spiral main shaft and continuous spiral blades, and the continuous spiral blades are spirally arranged on the outer side wall of the spiral main shaft.

[0019] Preferably, the connecting end of the spiral main shaft and the motor main shaft is provided with an external thread or an internal thread, and correspondingly, one end of the motor main shaft is provided with an internal thread or an external thread, so that the spiral stirring head is detachably connected to the motor main shaft, which is convenient for replacing or cleaning the spiral stirring head.

[0020] Preferably, a threading hole is also provided in the grouting gun butt for accommodating and storing the connecting wires with the stirring motor.

[0021] Preferably, the control system includes a grouting gun switch handle and an automatic rebound switch for controlling the opening and closing of the airway and the start and stop of the stirring motor. The end of the grouting gun switch handle is in contact with the automatic rebound switch, thereby ensuring that air pressure can be introduced into the airway while the grouting gun switch handle is pressed, the automatic rebound switch is turned on, and the stirring motor starts to rotate at the same time.

[0022] Preferably, the air inlet of the air duct is connected to an external air compressor, and the feed connectors are respectively connected to the material outlets of the grouting machine.

[0023] Preferably, the switch handle, slurry discharge head, motor spindle, grouting gun body and spiral stirring head of the grouting gun are made of stainless steel to prevent the grouting gun from rusting and increase its service life.

[0024] Since the present invention adopts the above technical solution, the beneficial effects of this application are:

[0025] 1. A polymer mixing grouting gun of the present invention is provided with a mixing and stirring system, and the mixing and stirring system includes a stirring motor, a motor main shaft connected to the stirring motor, a spiral stirring head detachably connected to the motor main shaft, and a slurry discharge head for discharging slurry; the slurry discharge head is detachably connected to the slurry discharge end of the grouting gun body, and the slurry discharge head can cover the spiral stirring head; the motor main shaft and / or the spiral stirring head are penetrated in a mixing chamber; so that the slurry is fully mixed in the mixing chamber and the slurry discharge head, thereby ensuring the grouting quality of the construction project.

[0026] 2. A polymer mixing grouting gun of the present invention is provided with an air channel for pressurizing two raw materials, the air channel is connected to an air compressor, and includes a first air channel, a second air channel and a third air channel, the first air channel is arranged in the grouting gun butt and extends into the grouting gun body; the second air channel and the third air channel are arranged in the grouting gun body, and one end of the second air channel and the third air channel are respectively connected to the first air channel, and the other end is respectively connected to the mixing chamber, the arrangement of the second air channel and the third air channel enables at least two raw materials to be preliminarily mixed in the mixing chamber under the action of air pressure, and the second air channel corresponds to a feed port, which is mainly used for pressurizing one of the raw materials, and the third air channel corresponds to another feed port, which is mainly used for pressurizing the other raw material. Under double pressurization, it is beneficial to fully mix the materials, and at the same time increases the injection pressure of the mixed slurry, thereby increasing the construction effect of the slurry.

[0027] 3. A polymer mixing grouting gun of the present invention has a mixing and stirring system and a pressurized airway, so that the slurry can flow quickly through air pressure drive and stirring motor stirring, and gun blockage and gun jumping can be prevented; the grouting gun is simple to manufacture, easy to carry, low in cost, and economical and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A cross-sectional view of a polymer mixing grouting gun of the present invention;

[0030] Figure 2 It is a three-dimensional schematic diagram of the pulp discharge head of the present invention;

[0031] Figure 3 It is a three-dimensional schematic diagram of the spiral stirring head of the present invention;

[0032] The reference numerals are as follows:

[0033] Serial number name Serial number name 1 Grouting gun body 22 Motor spindle 11 Grouting gun body 23 Spiral stirring head 12 Grouting tray 231 Screw spindle 13 Airway 232 Continuous spiral blade 131 First airway 24 Pulp head 132 Second airway 241 tube body 133 Third airway 242 Wing 14 Mixing chamber 243 Slurry outlet 15 First feed port 3 First feed connector 16 Second feed port 4 Second feed connection 17 Threading hole 5 Control valve 2 Mixing and stirring system 6 Grouting gun switch handle 21 Stirring motor 7 Automatic rebound switch DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention will be further described below in conjunction with the accompanying drawings:

[0036] Reference Figure 1 , Figure 2 and Figure 3 The present invention provides a polymer mixing grouting gun, comprising a grouting gun body 1, wherein a mixing and stirring system 2, an air passage 13 and a mixing chamber 14 for mixing and pressurizing slurry are arranged inside the grouting gun body 1, and the mixing chamber 14 is arranged at the slurry outlet end of the grouting gun body 1 and is communicated with the air passage 13; at least two feed ports communicated with the mixing chamber 14 are arranged on the grouting gun body 1, and in this embodiment, there are two feed ports, namely a first feed port 15 and a second feed port 16, and a detachable first feed joint 3 and a detachable second feed joint 4 are arranged in the first feed port 15 and the second feed port 16 respectively;

[0037] The mixing and stirring system 2 comprises a stirring motor 21, a motor main shaft 22 connected to the stirring motor 21, a spiral stirring head 23 detachably connected to the motor main shaft 22, and a slurry discharge head 24 for discharging slurry;

[0038] The slurry outlet head 24 is detachably connected to the slurry outlet end of the grouting gun body 1, and the slurry outlet head 24 can cover the spiral stirring head 23; the motor main shaft 22 and / or the spiral stirring head 23 are inserted into the mixing chamber 14;

[0039] It also includes a control system for controlling the start and stop of the stirring motor and the on and off of the airway pressure.

[0040] As a preferred embodiment, refer to Figure 1 The grouting gun body 1 includes a grouting gun body 11 and a grouting gun butt 12, and the mixing and stirring system 2 is arranged inside the grouting gun body 11 to facilitate the operation of the grouting gun.

[0041] As a preferred embodiment, refer to Figure 1 The air channel 13 includes a first air channel 131, a second air channel 132 and a third air channel 133. The first air channel 131 is arranged in the grouting gun butt 12 and extends into the grouting gun body 11; the second air channel 132 and the third air channel 133 are arranged in the grouting gun body 11, and one end of the second air channel 132 and the third air channel 133 are respectively communicated with the first air channel 131, and the other end of the second air channel 132 and the third air channel 133 are communicated with the mixing chamber 14. The arrangement of the second air channel 132 and the third air channel 133 allows the two raw materials to be preliminarily mixed in the mixing chamber under the action of air pressure, and the second air channel 132 corresponds to the first feed port 15, which is mainly used to pressurize one of the raw materials, and the third air channel 133 corresponds to the second feed port 16, which is mainly used to pressurize the other raw material. Under double pressurization, it is beneficial to fully mix the materials, and at the same time, the injection pressure of the mixed slurry is increased, thereby increasing the construction effect of the slurry.

[0042] As a preferred embodiment, the first feed connector 3 and the second feed connector 4 are right-angle connectors or straight-through connectors. The use of right-angle connectors is conducive to the connection with the feed pipe of the grouting machine, making the layout of the feed pipe neat and beautiful. The use of straight-through connectors is not prone to material blockage due to the absence of bends. In order to facilitate the connection with the feed pipe, a right-angle connector needs to be added to the feed pipe.

[0043] As a preferred embodiment, refer to Figure 1 The first feed connector 3 and the second feed connector 4 are respectively provided with control valves 5 for controlling the on-off of the raw materials.

[0044] As a preferred embodiment, the first feed joint 3 and the second feed joint 4 are respectively provided with detachable plugs, which are convenient for cleaning the residual materials in the first feed joint 3 and the second feed joint 4. During grouting, the plugs are in a tightened state. When blockage occurs, the plugs are removed and pressurized gas is blown into the first feed joint 3 and the second feed joint 4 to clean the residual materials.

[0045] As a preferred embodiment, refer to Figure 1 The stirring motor 21 is arranged at the tail of the grouting gun body 11, so that the grouting gun has a compact structure and a delicate appearance.

[0046] As a preferred embodiment, refer to Figure 2 The slurry outlet head 24 includes a tube body 241 and a wing plate 242. One end of the tube body 241 is provided with an external thread connected to the mixing chamber 14, and the other end is provided with a slurry outlet 243. The wing plate 242 is arranged on the outer side wall of the slurry outlet end of the tube body 241. The wing plate 242 is used to increase the connection tightness between the slurry outlet head 24 and the grouting head.

[0047] As a preferred embodiment, refer to Figure 2 The wing plate 242 and the tube body 241 are integrally formed or welded.

[0048] As a preferred embodiment, refer to Figure 3 The spiral stirring head 23 includes a spiral main shaft 231 and continuous spiral blades 232 , and the continuous spiral blades 232 are spirally arranged on the outer side wall of the spiral main shaft 231 .

[0049] As a preferred embodiment, the connecting end of the spiral main shaft 231 and the motor main shaft 22 is provided with external threads or internal threads. Correspondingly, one end of the motor main shaft 22 is provided with internal threads or external threads, so that the spiral stirring head 23 and the motor main shaft 22 are detachably connected, which is convenient for replacing or cleaning the spiral stirring head 23.

[0050] As a preferred embodiment, a wire threading hole 17 is further provided in the grouting gun butt 12 for accommodating and storing the connecting wires with the stirring motor 21, so that the wire layout in the grouting gun is neat and beautiful.

[0051] As a preferred embodiment, the control system includes a grouting gun switch handle 6 and an automatic rebound switch 7 for controlling the opening and closing of the airway and the start and stop of the stirring motor. The end of the grouting gun switch handle 6 is in contact with the automatic rebound switch 7 to ensure that air pressure can be introduced into the airway 13 while the grouting gun switch handle 6 is pressed, the automatic rebound switch 7 is turned on, and the stirring motor 21 starts to rotate at the same time.

[0052] As a preferred embodiment, the air inlet of the air channel 13 is connected to an external air compressor, and the first feed connector 3 and the second feed connector 4 are respectively connected to two material outlets of the grouting machine.

[0053] As a preferred embodiment, the grouting gun switch handle 6, the grouting head 24, the motor spindle 22, the grouting gun body 11 and the spiral stirring head 23 are made of stainless steel to prevent the grouting gun from rusting and increase its life.

[0054] The operation and use process of the present invention is as follows:

[0055] Step 1: First, connect the air pipe of the air compressor to the air inlet of the airway 13, connect the stirring motor 21 to the power supply, check whether the stirring motor 21 is normal, and check whether the first feed connector 3 and the second feed connector 4 are blocked;

[0056] Step 2: Install the spiral stirring head 23 and the slurry outlet head 24, align the slurry outlet head 24 with the grouting head and tighten it with a fixing clamp, and connect the first feed connector 3 and the second feed connector 4 to the two material outlets of the grouting machine respectively;

[0057] Step 3: Open the control valve 5, the power switch, and the air compressor at the first feed connector 3 and the second feed connector 4, press the grouting gun switch handle 6 to perform grouting, the two materials in the grouting machine first meet in the mixing chamber 14, and are preliminarily mixed and flow rapidly under the action of air pressure, and along with the rotation of the spiral stirring head 23, the preliminarily mixed slurry flows rapidly along the continuous spiral blades 232, so that the slurry is mixed more fully, and the fully mixed slurry is ejected from the slurry outlet 243 under the action of air pressure;

[0058] Step 4: After the grouting is completed, close the control valve 5 at the first feed joint 3 and the second feed joint 4, press the grouting gun switch handle 6 to discharge the excess slurry in the first feed joint 3 and the second feed joint 4 and the mixing chamber 14 to avoid slurry deposition or reaction between the two raw materials to block the first feed joint 3 and the second feed joint 4 and the mixing chamber 14. After the discharge, turn off the grouting machine, air compressor and power supply.

[0059] The above is a detailed introduction to the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the methods and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A polymer mixing grouting gun, characterized in that: include: A grouting gun body, wherein a mixing and stirring system, an air passage and a mixing chamber for mixing and pressurizing slurry are arranged inside the grouting gun body, the mixing chamber is arranged at the slurry outlet end of the grouting gun body and is communicated with the air passage; at least two feed ports communicated with the mixing chamber are arranged on the grouting gun body, and feed joints are respectively arranged on the feed ports; The mixing and stirring system comprises a stirring motor, a motor main shaft connected to the stirring motor, a spiral stirring head detachably connected to the motor main shaft, and a slurry discharge head for slurry discharge; The grouting head is detachably connected to the grouting end of the grouting gun body, and the grouting head can cover the spiral stirring head; the motor main shaft and / or the spiral stirring head are inserted into the mixing chamber; It also includes a control system for controlling the start and stop of the stirring motor and the on and off of the airway pressure; The feed joints are respectively provided with detachable plugs; The slurry outlet head comprises a tube body, one end of which is provided with an external thread connected to the mixing chamber; The grouting gun body comprises a grouting gun body and a grouting gun butt, and the mixing and stirring system is arranged inside the grouting gun body; The air channel includes a first air channel, a second air channel and a third air channel. The first air channel is arranged in the grouting gun butt and extends into the grouting gun body; the second air channel and the third air channel are arranged in the grouting gun body, and one end of the second air channel and the third air channel are respectively connected to the first air channel, and the other end is respectively connected to the mixing chamber; and the second air channel corresponds to the first feed port, and is mainly used to pressurize one of the raw materials, and the third air channel corresponds to the second feed port, and is mainly used to pressurize the other raw material.

2. A polymer mixing grouting gun according to claim 1, characterized in that: The feed joints are respectively provided with control valves for controlling the on-off of the raw materials.

3. A polymer mixing grouting gun according to claim 1, characterized in that: The pulp outlet head also includes a wing plate, and the other end of the tube body is provided with a pulp outlet, and the wing plate is arranged on the outer side wall of the pulp outlet end of the tube body.

4. A polymer mixing grouting gun according to claim 1, characterized in that: The spiral stirring head comprises a spiral main shaft and continuous spiral blades, and the continuous spiral blades are spirally arranged on the outer side wall of the spiral main shaft.

5. A polymer mixing grouting gun according to claim 4, characterized in that: The connecting end of the spiral main shaft and the motor main shaft is provided with an external thread or an internal thread, and correspondingly, one end of the motor main shaft is provided with an internal thread or an external thread.

6. A polymer mixing grouting gun according to claim 1, characterized in that: The control system comprises a grouting gun switch handle and an automatic rebound switch for controlling the on and off of the airway and the start and stop of the stirring motor. The end of the grouting gun switch handle is in contact with the automatic rebound switch.

7. A polymer mixing grouting gun according to claim 1, 4 or 5, characterized in that: The air inlet of the air channel is connected to an external air compressor, and the feed joint is respectively connected to two material outlets of the grouting machine.

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