Separation layer grouting filling pumping system

Abstract

The utility model relates to the technical field of bed separation filling, in particular to a bed separation grouting filling pumping system. The bed separation grouting filling pumping system comprises a feeding device, a stirring and mixing device and a diaphragm pump. The feeding device, the stirring and mixing device and the diaphragm pump are arranged in sequence. The diaphragm pump is adopted to replace a traditional slurry pump to serve as a grouting pump, a pump pit does not need to be dug in a site, smooth and standardized operation can be achieved on the ground, the diaphragm pump is generally used for making abrasion and corrosion media such as tailings and chemical slurry, and slurry such as coal ash runs in an independent cavity and does not make contact with a mechanical part of a pump body; not only are the problems of serious on-site liquid leakage and frequent replacement of accessories solved, but also the service life is prolonged to more than 15 years.

Description

Technical Field

[0001] The utility model relates to the technical field of separation layer filling technology, in particular to a separation layer grouting filling pumping system. Background Art

[0002] Overburden separation filling technology involves grouting the overburden separation zone through surface drilling, creating a grouting and compaction bearing zone of a certain width in the central part of the goaf. This maintains the stability of the main or target key stratum during mining, creating a composite support structure consisting of overburden key stratum, compaction bearing layer in the filling zone, and segmented isolation coal pillars to control the ground surface and effectively control surface collapse in the goaf. How to effectively and quickly inject slurry into the separation space has become a key issue restricting the development of overburden separation filling technology.

[0003] Currently, the most common process layout is to load fly ash from the fly ash storage tank into the hopper of the filter-making machine using a loader, and then use a screw conveyor to quantitatively deliver the fly ash into the filter-making machine (first-stage mixing). According to the set water-ash mass ratio, the fly ash is evenly mixed with water in proportion to form a slurry. The slurry enters the slurry mixing tank (second-stage mixing) and is lifted by a slurry pump to the grouting port for grouting. The traditional filling pumping process uses a slurry pump for grouting. Based on our construction experience and research, this pumping process has the following major disadvantages:

[0004] 1. Since the slurry pump has a relatively low self-priming force and the mixing tank is relatively deep, it is impossible to suck out the slurry from above. A large pump pit needs to be specially arranged on the site. This not only makes the site uneven and unsightly, but also makes the equipment transportation, inspection and maintenance very difficult.

[0005] 2. The traditional process uses a mud pump as a grouting pump, which has a process mismatch problem. This is because mud pumps are generally used in oil drilling to pump mud, while the medium pumped by the delamination grouting filling technology is a mixed slurry of fly ash, coal gangue, and water. The mass density is very high and the wear is very serious. During the operation of the mud pump, the slurry will enter the transmission part of the equipment, causing serious mechanical wear of the equipment. Over time, the slurry will flow out of the pump body, causing the factory area to be dirty and messy, and the equipment accessories are frequently replaced, and the equipment life is only about one year. Utility Model Content

[0006] The purpose of this utility model is to provide a separation layer grouting filling pumping system, which can solve the problems existing in the prior art;

[0007] The utility model provides a separation layer grouting filling pumping system, which includes a feeding device, a stirring and mixing device and a diaphragm pump;

[0008] The feeding device, the stirring and mixing device and the diaphragm pump are arranged in sequence.

[0009] Preferably, the feeding device includes a feeder and a belt conveyor;

[0010] One end of the belt conveyor is connected to the feeder, and the other end is connected to the stirring and mixing device.

[0011] Preferably, the stirring and mixing device includes an integrated filter and mixer and a mixing tank;

[0012] The integrated filter and mixer and the mixing tank are arranged in sequence. The inlet end of the integrated filter and mixer is connected to the belt conveyor, and the outlet end of the integrated filter and mixer is connected to the mixing tank.

[0013] Preferably, the inlet of the diaphragm pump communicates with the mixing tank.

[0014] Preferably, the diaphragm pump includes a diaphragm chamber, and the diaphragm chamber includes an inlet of the diaphragm pump. The inlet of the diaphragm pump communicates with the mixing tank through a pipeline.

[0015] Preferably, the diaphragm pump includes a diaphragm chamber and a pump body mechanical part;

[0016] The diaphragm chamber and the pump body mechanical part are arranged separately.

[0017] Preferably, the diaphragm chamber further includes an outlet, and the outlet communicates with the grouting pipeline.

[0018] Preferably, the mixing tank includes a tank body and a stirring device, and the stirring device is arranged in the tank body.

[0019] Preferably, the integrated filter and mixer of the stirring and mixing device and the diaphragm pump are installed on the same horizontal plane.

[0020] Preferably, the inlet end of the feeder of the feeding device and the inlet end of the mixing tank of the stirring device are on the same horizontal plane as the installation plane of the diaphragm pump.

[0021] Beneficial effects:

[0022] By using a diaphragm pump to replace the traditional slurry pump as the grouting pump, there is no need to dig a pump pit in the site, the ground can be made flat for standardized operation, and the diaphragm pump is generally used for wear-corrosion media such as tailings and chemical slurries. The fly ash slurry runs in a separate cavity and does not contact the mechanical part of the pump body. This not only solves the serious problem of liquid leakage on site and frequent replacement of accessories, but also extends the service life to more than 15 years. Description of the drawings

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of the separated layer grouting filling pumping system provided for the specific embodiment of the present invention.

[0025] Explanation of the reference numerals:

[0026] 1: Feeder; 2: Belt conveyor; 3: Filter and mixing integrated machine; 4: Stirring tank; 5: Pump body mechanical part; 6: Diaphragm cavity; 7: Discharge port; 8: Diaphragm pump inlet. Specific embodiments

[0027] The following will clearly and completely describe the technical solutions of the present invention in combination with the embodiments. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined. In addition, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] As Figure 1 shown, in this embodiment, a separated layer grouting filling pumping system is provided, which includes a feeding device, a stirring and mixing device, and a diaphragm pump. The feeding device, the stirring and mixing device, and the diaphragm pump are arranged in sequence.

[0031] Generally, a diaphragm pump is used to replace the traditional slurry pump as the grouting pump. There is no need to dig a pump pit in the site, and the ground can be made flat for standardized operation. Moreover, diaphragm pumps are generally used for wear-corrosion media such as tailings and chemical slurries. The fly ash slurry and the like operate in a separate cavity and do not contact the mechanical part of the pump body. This not only solves the serious problem of liquid leakage on site and frequent replacement of accessories, but also extends the service life to more than 15 years.

[0032] Specifically, the feeding device includes a feeder 1 and a belt conveyor 2. One end of the belt conveyor 2 is connected to the feeder 1, and the other end is connected to the stirring and mixing device.

[0033] The stirring and mixing device includes a filter-making integrated machine 3 and a stirring tank 4. The filter-making integrated machine 3 and the stirring tank 4 are arranged in sequence. The inlet end of the filter-making integrated machine 3 is connected to the belt conveyor 2, and the outlet end of the filter-making integrated machine 3 is connected to the stirring tank 4.

[0034] The feed inlet 8 of the diaphragm pump is in communication with the stirring tank 4. Specifically, the feed inlet 8 of the diaphragm pump is in communication with the stirring tank 4 through a seamless steel pipe. The diaphragm pump includes a diaphragm cavity 6, and the diaphragm cavity 6 includes the feed inlet 8 of the diaphragm pump. The feed inlet 8 of the diaphragm pump is in communication with the stirring tank 4 through a pipeline.

[0035] The diaphragm pump includes a diaphragm cavity 6 and a pump body mechanical part 5. The diaphragm cavity 6 and the pump body mechanical part 5 are arranged separately.

[0036] The diaphragm cavity 6 further includes a discharge port 7, and the discharge port 7 is in communication with the grouting pipeline. The stirring tank 4 includes a tank body and a stirring device, and the stirring device is arranged inside the tank body.

[0037] The filter press integrated with a stirring mixer 3 and the diaphragm pump of the stirring and mixing device are installed on the same horizontal plane. The inlet end of the feeder 1 of the feeding device and the inlet end of the mixing tank 4 of the stirring device are on the same horizontal plane as the installation plane of the diaphragm pump.

[0038] In this embodiment, the working principle of the separated seam grouting filling pumping system is also provided:

[0039] Fly ash and coal gangue powder are pushed to the feeder 1 by a forklift, and the powder is transported to the filter press integrated with a stirring mixer 3 by the belt conveyor 2. In the filter press integrated with a stirring mixer, the powder and water are fully stirred and mixed to form grouting slurry. After the slurry is made, it is transferred to the mixing tank 4. After secondary stirring in the mixing tank, it enters the inlet of the diaphragm pump 8, and then is transferred into the diaphragm cavity 6. The diaphragm cavity is sealed and separated from the mechanical part 5 of the pump body. After the slurry is pressurized by the diaphragm cavity 6, it enters the grouting pipeline through the outlet 7 and is transported to the grouting hole for grouting.

[0040] The equipment of this technical solution is arranged on a horizontal plane, the site space is cleaner and tidier, there will be no liquid leakage in the grouting pump, and the slurry does not contact the mechanical transmission part of the pump body, which prolongs the service life of the pump body. The grouting pump motor uses a frequency conversion motor, which is more energy-saving and power-saving. The grouting flow rate is larger than that of the traditional grouting flow rate, effectively increasing the grouting volume and being able to consume more coal gangue.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A separation layer grouting filling pumping system, characterized in that, It includes a feeding device, a stirring and mixing device, and a diaphragm pump; The feeding device, the stirring and mixing device, and the diaphragm pump are arranged in sequence; The feeding device includes a feeder and a belt conveyor; One end of the belt conveyor is connected to the feeder, and the other end is connected to the stirring and mixing device; The stirring and mixing device includes an integrated filter and mixing machine and a stirring tank; The integrated filter and mixing machine and the stirring tank are arranged in sequence. The inlet end of the integrated filter and mixing machine is connected to the belt conveyor, and the outlet end of the integrated filter and mixing machine is connected to the stirring tank.

2. The separated layer grouting filling pumping system according to claim 1, characterized in that, The inlet of the diaphragm pump is communicated with the stirring tank.

3. The off-strata grouting filling pumping system according to claim 2, wherein The diaphragm pump includes a diaphragm chamber, and the diaphragm chamber includes a diaphragm pump inlet, and the diaphragm pump inlet is communicated with the stirring tank through a pipeline.

4. The separated layer grouting filling pumping system according to claim 2, characterized in that, The diaphragm pump includes a diaphragm chamber and a pump body mechanical part; The diaphragm chamber and the pump body mechanical part are arranged separately; 5. The separated seam grouting and filling pumping system according to claim 4, wherein, The diaphragm chamber further includes an outlet, and the outlet is communicated with a grouting pipeline.

6. The separation layer grouting filling pumping system according to claim 1, characterized in that The stirring tank includes a tank body and a stirring device, and the stirring device is arranged in the tank body.

7. The separation layer grouting filling pumping system according to claim 1, characterized in that, The integrated filter and mixing machine of the stirring and mixing device and the diaphragm pump are installed on the same horizontal plane.

8. The separated seam grouting filling pumping system according to claim 7, characterized in that, The inlet end of the feeder of the feeding device and the inlet end of the stirring tank of the stirring device are located on the same horizontal plane as the installation plane of the diaphragm pump.

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