Impact air flow type concrete dry-conveying and wet-concreting machine
A concrete and air-flow technology, which is used in earth-moving drilling, wellbore lining, tunnel lining, etc., can solve the problems of long concrete solidification and forming time, poor roof support effect, high labor intensity of workers, etc. phenomenon, good support effect, and the effect of reducing labor intensity
Inactive Publication Date: 2009-08-26
刘永 +3
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Problems solved by technology
The labor intensity of the workers is high, the concrete solidification and forming time is long, the strength is low, and the roof support effect is poor
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[0017] Such as figure 1 As shown, the present invention is composed of a screw feeder 1, a roots blower 2, an air feed mixer 3, a conveying pipeline 4, and a decompression atomizing humidifier 5. The air outlet of the roots blower 2 is connected to the air feed mixer 3. On the air inlet, the outlet of the screw feeder 1 is connected to the inlet of the air mixer 3, the outlet of the air mixer 3 is connected to the conveying pipe 4, and the outlet of the conveying pipe 4 is connected to the decompression mist Dehumidifier 5. among them:
[0018] The structure of the decompression atomization humidifier is as follows figure 2 As shown, it includes a section of pipe housing 7 larger than the diameter of the conveying pipe 4, one end of the pipe housing 7 is provided with an interface 6 connected to the conveying pipe 4; the other end of the pipe housing 7 is open as a discharge port 9. A plurality of high-pressure atomizing nozzles 8 are arranged on the pipe wall of the pipeline sh...
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The invention discloses an impact air flow type concrete dry-conveying and wet-concreting machine which is characterized by consisting of a spiral feeder, a Roots blower, an air-material mixer, a conveyer pipeline and a decompression atomization wet-concreting machine. An air outlet of the Roots blower is connected with an air inlet of the air-material mixer. A discharge hole of the spiral feeder is connected with a feeding hole of the air-material mixer. The discharge hole of the air-material mixer is connected with the conveyer pipeline. The discharge hole of the conveyer pipeline is connected with the decompression atomization wet-concreting machine, wherein, the air-material mixer is used for mixing the impact air flow provided by the Roots blower and concrete granules completely to form a uniform gas-solid mixture which enters into the conveyer pipeline in floating state, and the decompression atomization wet-concreting machine is used for ensuring that dry powder of concrete is watered and atomized at the end of the pipeline and then forms a sticky mixture. The invention provides a mechanized device for filling coal mine underground concrete for gob-side entry retaining.
Description
Technical field [0001] The invention relates to the technical field of underground concrete forming and conveying in coal mines. Background technique [0002] In underground coal mining, it is required to keep 10 meters of protective coal pillars between the two working faces, and 100,000 tons of protective coal pillars must be reserved for the 1 million tons of mining face. These coals cannot be mined and cause serious waste of coal resources. At present, some mines use concrete filling along the goaf to replace the coal pillars, but the concrete filling requires artificial concrete mixing, manual transportation, and vibrating rods to mix wet materials. Workers have high labor intensity, long time for concrete solidification and low strength, and poor roof support effect. Therefore, there is a great need for a mechanized concrete filling equipment along the goaf. Summary of the invention [0003] In order to solve the above-mentioned problems, the present invention provides an ...
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IPC IPC(8): E21D11/10E21F15/10
Inventor 刘永袁秋新王维耿华锋
Owner 刘永