Peristaltic grouting pump

Abstract

The present application provides a perfusion type grouting pump, which comprises a control box and a double-push-rod air cylinder. A piston capable of sliding along the axial direction of the air cylinder is arranged in the double-push-rod air cylinder. The piston is in sealing connection with the air cylinder, so as to divide the air cylinder into a pushing cylinder and a recycling cylinder. The pushing cylinder is connected with the control box through a pushing pipeline, and the recycling cylinder is connected with the control box through a recycling pipeline. Two push rods are arranged side by side on the piston. The two push rods are both arranged to pass through the pushing cylinder. The push rods are in sliding sealing connection with the pushing cylinder. The end of each push rod away from the air cylinder is provided with a tray. A three-way reversing valve and an air inlet pipeline are arranged in the control box. The three connecting ends of the three-way reversing valve are connected with the air inlet pipeline, the pushing pipeline and the recycling pipeline, respectively. A three-in-one processing mechanism is arranged on the air inlet pipeline. The three-in-one processing mechanism is used for pressure regulating and filtering treatment of the air source. The perfusion type grouting pump is convenient and safe to use.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine grouting, and particularly relates to a perfusion type grouting pump. BACKGROUND

[0002] With the continuous increase of mining depth, the mine gradually appears strong mine pressure, difficult roadway maintenance, high ground temperature and difficult exploration, deteriorating mining conditions, and declining production technology effect and economic benefit. On the one hand, the roadway cross section must be increased, and on the other hand, the ground pressure increases, and under the action of high stress in deep part, the surrounding rock moves more violently, and the deformation and damage of the roadway are more serious. The mine pressure problem of the roadway is generally serious, and the floor heave becomes a common ground pressure phenomenon, especially in the mining and preparation roadway. The proportion of disrepair and severely disrepair roadways increases, and the deep roadway maintenance problem has become the weakest link in the entire mine production system.

[0003] Due to the increase of mining depth, the stress of coal and rock mass increases, the number of coal seams with rock burst danger increases, the mine with rock burst gradually increases, the hazard degree tends to be more serious with the increase of depth, and the gas emission is generally large when mining in deep part of the mine. The problem of coal and gas outburst has become an important problem that cannot be ignored in deep mining. Research shows that with the mining of the mine to the deep part, different degrees of heat damage problems are encountered, the high temperature of the mine seriously affects human health, causes various diseases, increases the accident rate, and reduces labor productivity. Even forced to stop production. With the increase of mining depth, the exploration intensity increases, the ground pressure and ground temperature increase, the rock burst and coal and gas outburst danger increase, and a series of measures need to be taken accordingly.

[0004] The main influencing factor of the complexity of deep coal seam mining is the mine pressure. Under the action of high stress, the surrounding rock moves more violently, and the deformation and damage of the roadway are more serious. The deformation speed of the surrounding rock of the roadway is fast, the deformation amount is large, and the deformation range of the surrounding rock of the roadway is large. The working characteristics of the support of the roadway are high, the initial support force, working resistance and shrinkage amount are large, and even the roadway excavated in the floor rock sometimes also suffers from large deformation.

[0005] The maintenance difficulty of the roadway has developed from the use period to the driving period, the abandoned roadway after excavation increases, the roadway will lose stability soon after excavation, the shrinkage deformation of the surrounding rock is large, the stability of the roadway gradually deteriorates with the increase of depth, the maintenance cost of the deep roadway increases sharply, the support body cannot resist the concentrated pressure to prevent the plastic deformation of the surrounding rock, but only can make the support performance adapt to the rock movement of the plastic deformation zone, and the support body needs to have corresponding shrinkability. For the loose zone, the ordinary support body needs to control the moving amount, keep the relative integrity, control the moving amount within the range that can be borne by the ordinary support structure, keep the relative stability of the loose zone, and prevent it from disintegration and collapse.

[0006] After the deep roadway is excavated, the deformation speed of the surrounding rock changes with the change of the excavation time, if effective supporting measures are not taken, when the deformation exceeds the allowable deformation of the supporting structure, the bearing capacity of the supporting structure decreases, the deformation speed of the surrounding rock intensifies, and finally the roadway structure is unstable. With the expansion of the mining scale of the coal mine in China, the mining depth is gradually increased, and the deep mining has become an inevitable process of the coal mine production.

[0007] In the prior art, the drilling hole can be grouted and supported by combining a supporting system. However, the existing grouting equipment is driven by electricity, and it is troublesome to pull the cable in the roadway, and if the cable is worn, not only the risk of electric leakage will occur, but also the flammable gas is easily ignited to cause a larger accident, that is, the existing grouting equipment has certain safety risks.

[0008] Therefore, it is necessary to provide an improved technical solution for the above-mentioned prior art. SUMMARY

[0009] The purpose of the present application is to provide a perfusion grouting pump to at least solve the problem that the existing grouting equipment has certain safety risks.

[0010] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0011] The perfusion grouting pump comprises a control box and a double-push-rod air cylinder.

[0012] The double-push-rod air cylinder is internally provided with a piston which slides in the axial direction of the air cylinder, and the piston is in sealing connection with the air cylinder to divide the air cylinder into a pushing cylinder and a recycling cylinder, the pushing cylinder is connected with the control box through a pushing pipeline, and the recycling cylinder is connected with the control box through a recycling pipeline.

[0013] Two push rods are arranged side by side on the piston, both of which pass out of the pushing cylinder, and the push rod and the pushing cylinder are in sliding sealing connection, and the end of each push rod away from the air cylinder is provided with a tray.

[0014] The control box is provided with a three-way reversing valve and an air inlet pipeline, and the three connecting ends of the three-way reversing valve are respectively connected with the air inlet pipeline, the pushing pipeline and the recycling pipeline.

[0015] The air inlet pipeline is provided with a three-in-one processing mechanism, which is used for pressure regulating and filtering treatment of the gas source.

[0016] As described above, the perfusion grouting pump, preferably, the three-in-one processing mechanism comprises a pressure reducing valve for stabilizing the pressure of the gas source.

[0017] The perfusion grouting pump as claimed in any one of the preceding claims, preferably, the triple processing mechanism further comprises a filter for cleaning and filtering the air source.

[0018] The perfusion grouting pump as claimed in any one of the preceding claims, preferably, the triple processing mechanism further comprises an oil atomizer for lubricating the components in the perfusion grouting pump.

[0019] The perfusion grouting pump as claimed in any one of the preceding claims, preferably, the pressure reducing valve, the filter and the oil atomizer are arranged in sequence in the air inlet direction of the air inlet pipe.

[0020] The perfusion grouting pump as claimed in any one of the preceding claims, preferably, the three-way reversing valve is provided with a switch having three positions: the cylinder lifting position, the cylinder retracting position and the cylinder stopping position; the cylinder lifting position corresponds to the advancing pipeline, the cylinder retracting position corresponds to the recycling pipeline, and the cylinder stopping position is between the advancing pipeline and the recycling pipeline.

[0021] The perfusion grouting pump as claimed in any one of the preceding claims, preferably, a quick adjusting valve is arranged at the connection between the advancing pipeline and the advancing cylinder,

[0022] a quick adjusting valve is arranged at the connection between the recycling pipeline and the recycling cylinder;

[0023] The quick adjusting valve is used for filling or discharging gas to or from the recycling cylinder and the advancing cylinder.

[0024] The perfusion grouting pump as claimed in any one of the preceding claims, preferably, a double-liquid tray is arranged on the side of the cylinder close to the advancing cylinder, and the tray is guided to move in the double-liquid tray.

[0025] The double-liquid tray is used for mounting a container containing double-component grouting liquid.

[0026] The perfusion grouting pump as claimed in any one of the preceding claims, preferably, the perfusion grouting pump further comprises a grouting liquid mixer mounted at the grouting liquid outlet of the container.

[0027] The grouting liquid mixer comprises an adapter pipe, two ends of the adapter pipe being an inlet end and an outlet end respectively.

[0028] A stirring member is rotationally arranged in the adapter pipe, and a limiting member is arranged at each end of the stirring member, the limiting member being used for abutting against the two ends of the stirring member; the limiting member is fixed relative to the adapter pipe, and the cross-sectional area of the limiting member is smaller than that of the adapter pipe.

[0029] A plurality of spiral units are arranged on the stirring member, and the spiral units rotate under the action of material flow.

[0030] The perfusion type grouting pump as described above, preferably, the screw unit is a screw structure; in the axial direction of the stirring member, the edges of the two ends of the screw unit are in the same plane;

[0031] In the axial direction of the stirring member, the edges of the two ends of the screw unit are parallel to each other, and in the adjacent two screw units, the adjacent edges are not in the same plane.

[0032] In the adjacent two screw units, the adjacent edges are perpendicular to each other.

[0033] Beneficial effects:

[0034] The perfusion type grouting pump uses air source, air is easy to obtain, and the working pressure is low. The used air can be discharged on site, and there is no need to recover the gas. The gas has small viscosity and small flow resistance loss, which is convenient for centralized air supply and long-distance transportation. The pneumatic system has strong adaptability to the environment, can work reliably in a wide temperature range, humid and dusty environment, and slight leakage will not pollute the environment, without fire and explosion danger, safe to use. Moreover, the perfusion type grouting pump has simple structure, convenient maintenance and low cost; the service life of each component is long, the execution output of the pneumatic element is smaller than that of the hydraulic pressure, the movement is faster, the applicability is strong, and it can work in gas outburst mine, flammable, explosive, multiple sinking, humid and impact harsh environment without polluting the environment, with long service life. The perfusion type grouting pump has self-unloading function and will not be damaged due to overload, which is convenient to realize stepless speed change. The working environment is clean.

[0035] The perfusion type grouting pump has flexible grouting mode, which can grout from the front, obliquely or horizontally. Moreover, the grouting pressure is large, and the grouting distance is far, which is a great advantage of using double liquid grouting pump. The requirement for grouting medium is low, and the grouting medium can be water, cement slurry, silt slurry, etc., or a mixture of the two. The double liquid grouting pump can grout slurry (A, B slurry composition) and suspension type (A, C slurry composition) slurry at the same time, which is not available in general grouting machines.

[0036] The slurry mixer can make the mixing of two or more kinds of slurry more thorough and uniform. The double liquid grouting pump has wide grouting range, which can be used for strengthening support of shaft and tunnel in mine, building, railway and other fields, full-length anchoring of mine support products, slope protection and reinforcement of mountain, reinforcement of water conservancy projects, tunnel support and reinforcement and reinforcement of subway engineering. During the grouting process, the grouting pipe does not reverse and does not overflow, which is beneficial to environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0037] The drawings constituting a part of the specification of this application are used to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute improper limitation on the present application. Among them:

[0038] Figure 1 Structure diagram of the perfusion type grouting pump according to an embodiment of the present application;

[0039] Figure 2 Sectional view of the mixer according to an embodiment of the present application.

[0040] In the figure: 1, inlet adapter sleeve; 2, inlet screw sleeve; 3, blocking ball; 4, spring; 5, adapter pipe; 6, stirring member; 7, outlet adapter sleeve; 8, outlet screw sleeve; 10, slurry mixer; 11, double-liquid holder; 12, push rod; 13, quick regulating valve; 14, double-push-rod air cylinder; 15, recovery pipeline; 16, propelling pipeline; 20, control box; 21, pressure reducing valve; 22, filter; 23, oil atomizer; 24, three-way reversing valve; 25, pressure gauge. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0042] In the description of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application, and are not required to be the specific orientations and operations of the present application, and therefore cannot be understood as limitations on the present application. The terms "connected", "connected" used in the present application should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection; can be directly connected, can also be indirectly connected through intermediate components. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0043] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0044] According to the specific embodiments of the present application, as Figures 1-2As shown, the present application provides a perfusion grouting pump, which is characterized in that the perfusion grouting pump comprises a control box 20 and a double push rod cylinder 14; the double push rod cylinder 14 is internally provided with a piston which slides along the axial direction of the cylinder, and the piston is sealingly connected with the cylinder to divide the cylinder into a pushing cylinder and a recovery cylinder, the pushing cylinder is connected with the control box 20 through a pushing pipeline 16, and the recovery cylinder is connected with the control box 20 through a recovery pipeline 15; two push rods 12 are arranged side by side on the piston, and the two push rods 12 are both arranged to pass through the pushing cylinder, and the push rod 12 is sealingly connected with the pushing cylinder in sliding mode, and the end of each push rod 12 away from the cylinder is provided with a tray; in this embodiment, a sealing sleeve or a sealing rubber ring is arranged between the push rod 12 and the pushing cylinder; the control box 20 is internally provided with a three-way reversing valve 24 and an air inlet pipeline, the three-way reversing valve 24 is connected with the air inlet pipeline, the pushing pipeline 16 and the recovery pipeline 15 through three connection ends, and a three-in-one processing mechanism is arranged on the air inlet pipeline, and the three-in-one processing mechanism is used for pressure regulating and filtering treatment of the air source.

[0045] The perfusion grouting pump uses an air source as a driving source, the air source is easy to obtain in a mine, and thus the perfusion grouting pump is more convenient to use, and the air source is relatively safe, and thus accidents such as electric leakage do not occur.

[0046] In the perfusion grouting pump, the cylinder has the double push rods 12, the trays on the double push rods 12 can simultaneously push two-component grouting liquid, that is, the perfusion grouting pump can perfuse double-component grouting liquid, for example, can simultaneously grout slurry type (A, B slurry composition) and suspension type (A, C slurry composition) slurry, and thus the applicability of the perfusion grouting pump is greatly improved.

[0047] The three-in-one processing mechanism comprises a pressure reducing valve 21, and the pressure reducing valve 21 is used for stabilizing the pressure of the air source. The air source is kept in a constant state through the pressure reducing valve 21, so as to avoid accidents caused by unstable air pressure, and damage to valves or actuators and other hardware caused by sudden changes in the air pressure of the air source can be reduced.

[0048] The three-in-one processing mechanism further comprises a filter 22, and the filter 22 is used for cleaning and filtering the air source. The filter 22 filters out water and part of impurities in the air, so as to avoid water entering the device with the air. In this embodiment, the filter 22 is further connected with a pressure gauge 25, so as to facilitate observation of the air pressure of the air inlet pipeline.

[0049] The three-in-one processing mechanism further comprises an oil atomizer 23, and the oil atomizer 23 is used for lubricating various components in the perfusion grouting pump. In this embodiment, the oil atomizer 23 is arranged to atomize lubricating oil, so as to lubricate components which are inconvenient to lubricate, such as the piston and the push rod 12 in the cylinder, and thus the service life of the perfusion grouting pump is greatly prolonged.

[0050] The pressure reducing valve 21, the filter 22 and the oil atomizer 23 are arranged in sequence in the air inlet direction of the air inlet pipe.

[0051] The air source is first stabilized by the pressure reducing valve 21 to ensure the stability of the air source entering the perfusion grouting pump, and the impurities in the air source are filtered by the filter 22 to avoid the impurities in the air source polluting the lubricating oil in the downstream oil atomizer 23, thereby ensuring the effectiveness of the lubricating oil.

[0052] The three-way reversing valve 24 is provided with a switch, which has three positions: cylinder lifting position, cylinder collecting position and cylinder stopping position; the cylinder lifting position corresponds to the advancing pipeline 16, the cylinder collecting position corresponds to the recycling pipeline 15, and the cylinder stopping position is between the advancing pipeline 16 and the recycling pipeline 15.

[0053] In this embodiment, when the switch is turned to the cylinder lifting position, the three-way reversing valve 24 communicates the air inlet pipeline with the advancing pipeline 16; when the switch is turned to the cylinder collecting position, the three-way reversing valve 24 communicates the air inlet pipeline with the recycling pipeline 15; when the switch is turned to the cylinder stopping position, the air inlet pipeline is not communicated with the advancing pipeline 16 and the recycling pipeline 15.

[0054] A quick regulating valve 13 is arranged at the connection between the advancing pipeline 16 and the advancing cylinder, and a quick regulating valve 13 is arranged at the connection between the recycling pipeline 15 and the recycling cylinder; the quick regulating valve 13 is used to fill gas into the recycling cylinder and the advancing cylinder or exhaust waste gas.

[0055] A double-liquid holder 11 is arranged on the side of the cylinder close to the advancing cylinder, and the tray is guided to move in the double-liquid holder 11; the double-liquid holder 11 is used to install a container containing two-component grouting liquid. In this embodiment, the two-component grouting liquid is separately arranged before grouting, and is mixed together during grouting.

[0056] The perfusion grouting pump further comprises a grout mixer 10, which is installed at the grout outlet of the container. The grout mixer 10 is used to mix the grout, and the two-component grout is mixed in the mixer after being extruded, and is then punched into the designated position in the borehole, thereby ensuring that the grout has been fully mixed.

[0057] The grout mixer 10 comprises an adapter pipe 5, two ends of the adapter pipe 5 being an inlet end and an outlet end respectively; a stirring member 6, which is rotatably arranged in the adapter pipe 5, and a limiting member is arranged at each end of the stirring member 6, the limiting member being used to abut against the two ends of the stirring member 6; the limiting member is fixed relative to the adapter pipe 5, and the cross-sectional area of the limiting member is smaller than that of the adapter pipe 5; a plurality of spiral units are arranged on the stirring member 6, and the spiral units rotate under the action of material flow.

[0058] In the mixer, the stirring member 6 is limited from axially displacing relative to the adapter pipe 5 by the limiting member, so that the stirring member 6 can only rotate in the adapter pipe 5. The material enters the adapter pipe 5 from the inlet end and exits the adapter pipe 5 from the outlet end. Under the flow action of the material, the helical unit drives the stirring member 6 to rotate, so that the material is fully and uniformly mixed. That is, when the material passes through the mixer, the stirring member 6 can mix the material by rotating the helical unit under the flow action of the material itself, without the need to specially set a driving source for driving the stirring of the material, thereby saving energy and achieving full stirring of the material.

[0059] The helical unit is of a helical structure, and the edges at the two ends of the helical unit are in the same plane in the axial direction of the stirring member 6. In this embodiment, a plurality of helical units are connected side by side to form the stirring member 6. The structure of the helical unit is similar to the principle of the rotation of a windmill. When the fluid passes through, the helical unit rotates, thereby saving the driving source and causing the stirring member 6 to rotate, so that the material is rotated and stirred.

[0060] In the axial direction of the stirring member 6, the edges at the two ends of the helical unit are parallel to each other. In this embodiment, the edges at the two ends of the helical unit are parallel to each other, so that the material is displaced as much as possible after passing through one helical unit, thereby achieving greater stirring and rotation of the material.

[0061] In the adjacent two helical units, the adjacent edges are not in the same plane. That is, the adjacent helical units in this application are not continuous, and this arrangement is also to maximize the uniform mixing of the material. After the material is rotated and stirred by one helical unit, because the edges of the adjacent two helical units are not in the same plane, that is, there is a certain angle between the adjacent two helical units. When the material enters the next helical unit, it needs to be cut by the edge of the next helical unit and then be rotated and stirred by the helical unit. The plurality of helical units arranged side by side on the stirring member 6 in this application cut and rotate the material multiple times, thereby maximizing the stirring of the material.

[0062] In the adjacent two helical units, the adjacent edges are perpendicular to each other. This makes the adjacent edges form a cross shape, and when the material enters the next helical unit from one helical unit, the adjacent edges perpendicular to each other will divide the material into four parts, which are alternately combined to maximize the mixing of the material.

[0063] A one-way valve is arranged at the inlet end of the adapter pipe 5, which is used to allow the material to pass through the inlet end in one direction only. This allows the material to enter the mixer only from the inlet end and prevents the material from flowing back from the inlet end, thereby ensuring that the material does not backflow.

[0064] An inlet adapter sleeve 1 is connected to the inlet end of the adapter pipe 5, and an outlet adapter sleeve 7 is arranged at the outlet of the adapter pipe 5; a limiting member is arranged in the inlet adapter sleeve 1 and the outlet adapter sleeve 7. In the embodiment, the inlet adapter sleeve 1 and the outlet adapter sleeve 7 are hollow sleeve structures, and internal threads are arranged in the inlet adapter sleeve 1 and the outlet adapter sleeve 7; external threads are arranged on the outer surfaces of the adapter pipe 5 near the inlet end and the outlet end; the inlet adapter sleeve 1 and the outlet adapter sleeve 7 are threadedly connected to the adapter pipe 5. Such arrangement not only makes the structure of the mixer simpler, but also facilitates disassembly and assembly of the mixer, and further facilitates replacement of the stirring member 6.

[0065] The limiting member is a stepped hole arranged in the inlet adapter sleeve 1 and the outlet adapter sleeve 7, or a screw sleeve threadedly connected in the inlet adapter sleeve 1 and the outlet adapter sleeve 7, and the screw sleeve is a hollow sleeve structure.

[0066] When the limiting member is the stepped hole, the limiting member and the respective inlet adapter sleeve 1 and outlet adapter sleeve 7 are integrated structures, which have better structural strength; when the limiting member is the screw sleeve, it is more convenient for disassembly and assembly of the mixer, and replacement of the components. In the embodiment, as shown in the figure, the limiting member is the screw sleeve, which includes an inlet screw sleeve 2 and an outlet screw sleeve 8. Figure 1

[0067] The one-way valve is arranged between the limiting member of the inlet adapter sleeve 1 and the stirring member 6, and a hollow hole is arranged on the limiting member for material flow to pass through; the one-way valve includes a blocking ball 3 and a spring 4, the two ends of the spring 4 are respectively in contact with the blocking ball 3 and the stirring member 6, and the spring 4 presses the blocking ball 3 tightly on the hollow hole of the limiting member. In the embodiment, the spring 4 is directly in contact with the stirring member 6; in other embodiments, a limiting member can be arranged between the spring 4 and the stirring member 6 to separate the spring 4 and the stirring member 6.

[0068] The spring 4 is a conical spring, the end of the conical spring in contact with the blocking ball 3 is a small end, the end of the conical spring in contact with the stirring member 6 is a large end, and the conical spring gradually increases from the small end to the large end. The spring 4 selects the conical spring, the large end of the conical spring is in contact with the stirring member 6, so that the spring 4 can be compressed more stably, and the stable operation of the mixer is ensured.

[0069] In the embodiment, the perfusion type grouting pump dust collection is arranged on a trolley, which is convenient for transportation and use in a mine.

[0070] When the perfusion type grouting pump is used:

[0071] 1. The gas source is connected to the air inlet pipe in the control box, the end of the air inlet pipe is an air inlet in the embodiment, and the gas source is connected to the air inlet; then the pressure reducing valve is adjusted until the required pressure value is reached;

[0072] ​2. Debugging whether the piston in the cylinder runs back and forth smoothly;

[0073] 3. Installing on the double slurry tray, the container with double slurry;

[0074] 4. Installing the slurry mixer at the A, B slurry outlets, so that the A, B two kinds of slurry can be well mixed together, and the best effect is achieved;

[0075] 5. When the switch is turned to the position of the cylinder rising, the gas source enters the push cylinder through the push pipeline, so that the piston is slowly pushed out, and the quick adjusting valve arranged on the recovery cylinder discharges waste gas, and the push rod top pushes the bottom of the slurry container at a certain speed, so that the A, B two kinds of slurry are slowly pushed out.

[0076] 6. After the slurry is injected and pushed, the switch is turned to the position of the cylinder returning, the gas source enters the recovery cylinder through the recovery pipeline, and the special quick adjusting valve makes the piston slowly return, and the quick adjusting valve arranged on the push cylinder discharges waste gas, and the piston and the push rod return to the original position at the required speed.

[0077] In summary, the technical scheme of the perfusion type grouting pump provided by the application uses a gas source as a driving source, the gas source is easy to obtain in a mine, so that the perfusion type grouting pump is more convenient to use, and the perfusion type grouting pump is safer to use, and accidents such as electric leakage do not occur.

[0078] In the perfusion type grouting pump, the cylinder has double push rods, and the tray on the double push rods can push two kinds of grouting liquids at the same time, that is, the perfusion type grouting pump can perfuse double-component slurry, for example, the perfusion type grouting pump can simultaneously grout slurry of the slurry type (A, B slurry composition) and the suspension type (A, C slurry composition), thereby greatly improving the applicability of the perfusion type grouting pump.

[0079] In the slurry mixer, when the material passes through the mixer, the stirring part can mix the material by rotating the spiral unit under the flow of the material itself, without specially setting a driving source for driving the stirring material to mix, not only saving energy, but also realizing sufficient stirring of the material. In adjacent two spiral units, adjacent sides form a cross shape, and when the material enters the next spiral unit from one spiral unit, the adjacent sides perpendicular to each other divide the material into four parts, and are alternately combined to maximize the mixing of the material.

[0080] It can be understood that the above description is only exemplary, and the embodiments of the application are not limited in this regard.

[0081] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is within the scope of protection of the claims of the present application.

Claims

1. A gravity feed grout pump characterized by, The perfusion type grouting pump comprises a control box and a double-push-rod air cylinder; The double-push-rod air cylinder is internally provided with a piston which slides along the axial direction of the air cylinder, and the piston is in sealing connection with the air cylinder so as to divide the air cylinder into a pushing cylinder and a recovery cylinder, the pushing cylinder is connected with the control box through a pushing pipeline, and the recovery cylinder is connected with the control box through a recovery pipeline; Two push rods are arranged on the piston in parallel, the two push rods are both arranged to pass through the pushing cylinder, the push rod is in sliding sealing connection with the pushing cylinder, and the end of each push rod away from the air cylinder is provided with a tray; The control box is internally provided with a three-way reversing valve and an air inlet pipeline, and the three connecting ends of the three-way reversing valve are respectively connected with the air inlet pipeline, the pushing pipeline and the recovery pipeline; The air inlet pipeline is provided with a triple processing mechanism, and the triple processing mechanism is used for pressure regulating and filtering treatment of the air source; The air cylinder is provided with a double-liquid tray box near the side of the pushing cylinder, and the tray is guided to move in the double-liquid tray box; The double-liquid tray box is used for mounting a container filled with double-component grouting liquid; The perfusion type grouting pump further comprises a grout mixer, and the grout mixer is mounted at the grout outlet of the container; The grout mixer comprises an adapter pipe, and the two ends of the adapter pipe are respectively an inlet end and an outlet end; A stirring piece is arranged in the adapter pipe in a rotating mode, and a limiting piece is arranged at each end of the stirring piece, the limiting piece is used for abutting against the two ends of the stirring piece, the limiting piece is fixed relative to the adapter pipe, and the cross-sectional area of the limiting piece is smaller than that of the adapter pipe; A plurality of spiral units are arranged on the stirring piece, and the spiral units rotate under the action of material flow; A one-way valve is arranged at the inlet end of the adapter pipe, the one-way valve comprises a blocking ball and a spring, the two ends of the spring are respectively in contact with the blocking ball and the stirring piece, and the spring presses the blocking ball against the hollow hole of the limiting piece; the spring is a conical spring, the end of the conical spring in contact with the blocking ball is a small end, the end of the conical spring in contact with the stirring piece is a large end, and the conical spring gradually increases from the small end to the large end.

2. A gravity fed grout pump according to claim 1, wherein, The triple processing mechanism comprises a pressure reducing valve, and the pressure reducing valve is used for stabilizing the pressure of the air source.

3. A gravity fed grout pump according to claim 2, wherein, The triple processing mechanism further comprises a filter, and the filter is used for cleaning filtration of the air source.

4. The gravity feed grout pump of claim 3, wherein, The triple processing mechanism further comprises an oil atomizer, and the oil atomizer is used for lubricating each component of the perfusion type grouting pump.

5. A gravity fed grout pump according to claim 4, wherein, In the air inlet direction of the air inlet pipeline, the pressure reducing valve, the filter and the oil atomizer are arranged in sequence.

6. The gravity feed grout pump of claim 1, wherein, The three-way reversing valve is provided with a switch, the switch has three positions: a cylinder lifting position, a cylinder recovery position and a cylinder stopping position; the cylinder lifting position corresponds to the pushing pipeline, the cylinder recovery position corresponds to the recovery pipeline, and the cylinder stopping position is between the pushing pipeline and the recovery pipeline.

7. The perfusion type grouting pump according to claim 1, wherein A quick adjusting valve is arranged at the connection between the pushing pipeline and the pushing cylinder, A quick adjusting valve is arranged at the connection between the recovery pipeline and the recovery cylinder; The quick adjusting valve is used for filling gas into the recovery cylinder and the pushing cylinder or discharging waste gas.

8. The gravity feed grout pump of claim 1, wherein, The spiral unit is a spiral structure; in the axial direction of the stirring piece, the edge lines at the two ends of the spiral unit are in the same plane. In the axial direction of the stirring member, the lines of the two ends of the spiral unit are parallel to each other, and in the adjacent two spiral units, the adjacent lines are not in the same plane. In the adjacent two spiral units, the adjacent lines are perpendicular to each other.

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