Quartz sand washing mortar setting device

Abstract

A slurry settling device for quartz sand washing includes a clarification tank, a flocculation cylinder, a mixing tank, and a sludge scraping mechanism. The lower end of the clarification tank is conical, and the upper end is cylindrical. An overflow trough is provided at the edge of the upper end of the clarification tank, and an overflow pipe is provided at the bottom of the overflow trough. The mixing tank is located at the edge of the clarification tank and is equipped with a mud pipe and a flocculant pipe to mix the mud and flocculant. The lower end of the mixing tank is connected to the flocculation cylinder through a pipe groove. The flocculation cylinder is located at the axis of the clarification tank, and the height of the edge of the flocculation cylinder is greater than the height of the edge of the clarification tank. The upper end of the flocculation cylinder is connected to the mixing tank through a pipe groove. The sludge scraping mechanism is located at the axis of the flocculation cylinder, and its upper end is fixedly connected to the flocculation cylinder. A connecting corridor is also provided at the upper end of the clarification tank. One end of the connecting corridor is fixedly connected to the clarification tank, and the other end of the connecting corridor is fixedly connected to the flocculation cylinder. This slurry settling device for quartz sand washing is highly efficient and has a good clarification effect.

Description

Technical Field

[0001] This utility model relates to the field of quartz sand processing technology, and in particular to a mortar settling device for quartz sand washing. Background Technology

[0002] Quartz sand has various uses, one of which is as a fracturing proppant in the oil industry. When used as a fracturing proppant in oil, quartz sand has strict requirements regarding particle size. Therefore, it needs to be washed and screened. During washing, a large amount of slurry water is generated. The traditional method is to allow the slurry water to settle naturally. However, the solids in the slurry are very fine and do not settle easily, making this method time-consuming and requiring large settling tanks. To accelerate settling, flocculants can be added to the slurry. However, because the settling tank area is very large and the solid content in the slurry is unevenly distributed, this leads to waste of flocculants. If the area of ​​the settling tank is reduced, the rate of silt generation will be very fast, causing silt removal problems. Additionally, a small amount of silt will be mixed in with the upper layer of clear water, which will clog related pipes during subsequent recycling. Summary of the Invention

[0003] Therefore, it is necessary to provide a mortar settling device for washing quartz sand that is efficient and has a good clarification effect.

[0004] A mortar settling device for washing quartz sand includes a clarification tank, a flocculation cylinder, a mixing tank, and a sludge scraping mechanism;

[0005] The lower end of the clarification tank is conical, the upper end of the clarification tank is cylindrical, the upper edge of the clarification tank is provided with an overflow trough, the bottom of the overflow trough is provided with an overflow pipe, and the lower end of the clarification tank is conical.

[0006] The mixing tank is located at the edge of the clarification tank. The mixing tank is equipped with mud pipes and flocculant pipes to mix mud and flocculant. The lower end of the mixing tank is connected to the flocculation cylinder through a pipe groove.

[0007] The flocculation cylinder is located at the center of the clarifier, and the edge height of the flocculation cylinder is greater than the edge height of the clarifier. The upper end of the flocculation cylinder is connected to the mixing tank through a pipe groove.

[0008] The sludge scraping mechanism is located at the axis of the flocculation cylinder, and the upper end of the sludge scraping mechanism is fixedly connected to the flocculation cylinder.

[0009] The upper end of the clarification tank is also provided with a connecting corridor, one end of which is fixedly connected to the clarification tank and the other end of which is fixedly connected to the flocculation cylinder.

[0010] Preferably, the sludge scraping mechanism includes a scraper, a drive shaft, a reducer, a motor, and a support cover plate. The scraper is fixedly connected to the lower end of the drive shaft to scrape away the sludge at the bottom of the clarification tank. The upper end of the drive shaft is connected to the gear of the reducer. The reducer is connected to the gear of the motor shaft. The motor body is fixedly connected to the support cover plate, which is installed on the connecting corridor.

[0011] Preferably, the scraper mechanism further includes agitating blades to accelerate the mixing of mud and flocculant, and the agitating blades are located in the flocculation cylinder.

[0012] Preferably, the connecting corridor includes several connecting plates and a central support plate. One end of the connecting plate is fixedly connected to the clarification pool, and the other end of the connecting plate is connected to the central support plate. The connecting plates are radially distributed around the central support plate.

[0013] Preferably, the overflow channel is spiral-shaped, and the overflow pipe is located at the end of the overflow channel.

[0014] Preferably, the mortar settling device for washing quartz sand further includes a support frame for suspending the clarification tank. The support frame includes a support ring and at least three support columns. The support ring is located below the overflow trough and is fixedly connected to the edge of the clarification tank. The upper end of the support column is fixedly connected to the support ring, and the lower end of the support column is located on the ground.

[0015] Beneficial Effects: In use, the slurry settling device for quartz sand washing of this invention first transports the slurry and flocculant to a mixing tank via slurry and flocculant pipes. Then, the mixed fluid enters the flocculation cylinder along the pipe channel. Under the action of the flocculant, the slurry flocculates, and the solid matter settles to the bottom of the clarification tank. The clear water overflows from the edge of the clarification tank into the overflow trough and is further transported down through the overflow pipe. Because the clarification tank is very large, the clear water flowing into the overflow trough is very clear, almost free of impurities, resulting in a good clarification effect. Simultaneously, the flocculation zone and the clarification zone are separated by the flocculation cylinder, and the disturbance of water within the flocculation cylinder does not affect the water in the clarification zone, enabling faster water clarification. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the mortar settling device for quartz sand washing according to the present invention, showing a preferred angle.

[0017] Figure 2 This is a schematic diagram of the mortar settling device for quartz sand washing according to another preferred angle of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the mortar settling device for washing quartz sand according to this utility model.

[0019] In the diagram: 10 mortar settling device for quartz sand washing, 20 clarifier, 201 overflow trough, 202 overflow pipe, 203 connecting corridor, 2031 connecting plate, 2032 central support plate, 30 flocculation cylinder, 40 mixing tank, 401 mud pipe, 402 flocculant pipe, 403 pipe trench, 50 sludge scraping mechanism, 501 scraper, 502 drive shaft, 503 stirring blade, 60 support frame, 601 support ring, 602 support column. Detailed Implementation

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Please refer to Figures 1 to 3 A mortar settling device 10 for washing quartz sand includes a clarification tank 20, a flocculation cylinder 30, a mixing tank 40, and a sludge scraping mechanism 50.

[0022] The lower end of the clarification tank 20 is conical, the upper end of the clarification tank 20 is cylindrical, the upper edge of the clarification tank 20 is provided with an overflow trough 201, the bottom of the overflow trough 201 is provided with an overflow pipe 202, and the lower end of the clarification tank 20 is conical.

[0023] The mixing tank 40 is located at the edge of the clarification tank 20. The mixing tank 40 is equipped with a mud pipe 401 and a flocculant pipe 402 to mix mud and flocculant. The lower end of the mixing tank 40 is connected to the flocculation cylinder 30 through a pipe groove 403.

[0024] The flocculation cylinder 30 is located at the axis of the clarifier 20, the edge height of the flocculation cylinder 30 is greater than the edge height of the clarifier 20, and the upper end of the flocculation cylinder 30 is connected to the mixing tank 40 through the pipe groove 403.

[0025] The sludge scraping mechanism 50 is located at the axis of the flocculation cylinder 30, and the upper end of the sludge scraping mechanism 50 is fixedly connected to the flocculation cylinder 30.

[0026] The upper end of the clarification tank 20 is also provided with a connecting corridor 203, one end of which is fixedly connected to the clarification tank 20, and the other end of which is fixedly connected to the flocculation cylinder 30.

[0027] The clarification tank 20 of this invention is used for clarifying mud. Unlike existing clarification tanks 20 used for mortar, the clarification tank 20 of this invention adopts a conical structure, making it easier to collect solid sludge after clarification. Once the mud has been collected to a certain extent, it is discharged from the bottom of the clarification tank 20 using a pressure pump. Furthermore, this invention employs overflow clarification, ensuring that the treated water is relatively clean and suitable for sand washing without clogging related pipelines. It should be noted that this invention also occupies a smaller area; a typical mud and sand clarification tank 20 occupies more than half an acre, while the diameter of the clarification tank 20 of this invention is less than 5 meters.

[0028] The flocculation cylinder 30 of this invention is used to separate the flocculation zone from the clarification zone. In existing clarification tanks 20, the slurry agitates the liquid surface upon entry, carrying sediment into the vicinity of the inlet, thus prolonging the clarification time and introducing some sediment into the clarified water, affecting the clarification effect. Inside the flocculation cylinder 30, under the action of the flocculating liquid, the sediment flocculates and settles, eventually settling to the bottom of the clarification tank 20. Because the flocculating liquid and slurry only coagulate within the flocculation cylinder 30 and do not diffuse, the flocculation effect is significantly improved.

[0029] The mixing tank 40 of this invention is used for the initial mixing of mud and flocculant, and the mixture flows into the flocculation cylinder 30 after confluence. The mud comes from wastewater generated in various stages of sand washing and is pumped into the mixing tank 40 through the mud pipe 401. The flocculant is prepared by mixing flocculant and water, and after mixing, it is pumped into the mixing tank 40 through the flocculant pipe 402.

[0030] The sludge scraping mechanism 50 of this invention is used to scrape away sludge and sand from the bottom sidewall of the clarification tank 20. The sludge and sand that settles to the bottom of the clarification tank 20 will gradually adhere to the sidewall. If it is not scraped away in time, the stickiness of the sludge and sand will cause it to accumulate thicker and thicker.

[0031] In a preferred embodiment, the sludge scraping mechanism 50 includes a scraper 501, a drive shaft 502, a reducer, a motor, and a support cover plate. The scraper 501 is fixedly connected to the lower end of the drive shaft 502 to scrape away the sludge at the bottom of the clarification tank 20. The upper end of the drive shaft 502 is connected to the gear of the reducer. The reducer is connected to the shaft gear of the motor. The motor body is fixedly connected to the support cover plate, which is mounted on the connecting corridor 203.

[0032] The mud and sand do not need to be scraped too frequently, and the motor speed is generally high. Therefore, a speed reducer is needed to reduce the speed to 5-10 revolutions per minute.

[0033] In a preferred embodiment, the scraper 501 mechanism further includes agitator blades 503 to accelerate the mixing of slurry and flocculant. The agitator blades 503 are located within the flocculation cylinder 30. The drive shaft 502, powered by a motor, has significant power; using it solely for scraping away sludge would be wasteful. Adding agitator blades 503 to the drive shaft 502 to agitate the slurry and flocculant within the flocculation cylinder 30 accelerates mixing and increases the flocculation speed.

[0034] In a preferred embodiment, the connecting corridor 203 includes a plurality of connecting plates 2031 and a central support plate 2032. One end of the connecting plate 2031 is fixedly connected to the clarification pool 20, and the other end of the connecting plate 2031 is connected to the central support plate 2032. The connecting plates 2031 are radially distributed around the central support plate 2032.

[0035] The connecting corridor 203 of this utility model is mainly used to fix the flocculation cylinder 30 and the sludge scraping mechanism 50 on the clarification tank 20. It also facilitates the inspection and maintenance of the flocculation cylinder 30 and the sludge scraping mechanism 50. During maintenance, workers need to climb to the upper edge of the clarification tank 20 and walk through the connecting plate 2031 on the connecting corridor 203 to the central support plate 2032 to inspect the flocculation cylinder 30 and the sludge scraping mechanism 50.

[0036] In a preferred embodiment, the overflow trough 201 is spiral-shaped, and the overflow pipe 202 is located at the end of the overflow trough 201. This facilitates the rapid discharge of overflowing clean water.

[0037] In a preferred embodiment, the mortar settling device 10 for washing quartz sand further includes a support frame 60 for suspending the clarification tank 20. The support frame 60 includes a support ring 601 and at least three support columns 602. The support ring 601 is located below the overflow trough 201 and is fixedly connected to the edge of the clarification tank 20. The upper end of the support column 602 is fixedly connected to the support ring 601, and the lower end of the support column 602 is located on the ground.

[0038] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Those skilled in the art will understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A quartz sand washing mortar settling device for sand washing, characterized by: Includes clarifier, flocculation cylinder, mixing tank, and sludge scraping mechanism; The lower end of the clarification tank is conical, the upper end of the clarification tank is cylindrical, the upper edge of the clarification tank is provided with an overflow trough, the bottom of the overflow trough is provided with an overflow pipe, and the lower end of the clarification tank is conical. The mixing tank is located at the edge of the clarification tank. The mixing tank is equipped with mud pipes and flocculant pipes to mix mud and flocculant. The lower end of the mixing tank is connected to the flocculation cylinder through a pipe groove. The flocculation cylinder is located at the center of the clarifier, and the edge height of the flocculation cylinder is greater than the edge height of the clarifier. The upper end of the flocculation cylinder is connected to the mixing tank through a pipe groove. The sludge scraping mechanism is located at the axis of the flocculation cylinder, and the upper end of the sludge scraping mechanism is fixedly connected to the flocculation cylinder. The upper end of the clarification tank is also provided with a connecting corridor, one end of which is fixedly connected to the clarification tank and the other end of which is fixedly connected to the flocculation cylinder.

2. The quartz sand washing mortar settling device according to claim 1, characterized by: The sludge scraping mechanism includes a scraper, a drive shaft, a reducer, a motor, and a support cover plate. The scraper is fixedly connected to the lower end of the drive shaft to scrape away the sludge at the bottom of the clarification tank. The upper end of the drive shaft is connected to the gear of the reducer. The reducer is connected to the gear of the motor shaft. The motor body is fixedly connected to the support cover plate, which is installed on the connecting corridor.

3. The quartz sand washing slurry settling device according to claim 2, characterized by: The sludge scraping mechanism also includes agitating blades to accelerate the mixing of sludge and flocculant, and the agitating blades are located in the flocculation cylinder.

4. The quartz sand washing slurry settling device according to claim 1, characterized by: The connecting corridor includes several connecting plates and a central support plate. One end of each connecting plate is fixedly connected to the clarification pool, and the other end of each connecting plate is connected to the central support plate. The connecting plates are radially distributed around the central support plate.

5. The quartz sand washing mortar settling device according to claim 1, characterized by: The overflow channel is spiral-shaped, and the overflow pipe is located at the end of the overflow channel.

6. The quartz sand washing slurry settling device according to claim 1, characterized by: The mortar settling device for quartz sand washing also includes a support frame for suspending the clarification tank. The support frame includes a support ring and at least three support columns. The support ring is located below the overflow trough and is fixedly connected to the edge of the clarification tank. The upper end of the support column is fixedly connected to the support ring, and the lower end of the support column is located on the ground.

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