Discharged sewage treatment and re-discharge equipment and process based on safe coal mining

Abstract

The invention relates to the technical field of sewage treatment, and discloses discharged sewage treatment and re-discharge equipment and process based on safe coal mining, and the discharged sewage treatment and re-discharge equipment based on safe coal mining comprises a sedimentation tank and a ladder frame fixedly connected to the top end of the sedimentation tank, the double-end frame is fixedly connected to the middle of the ladder frame, the sleeve shell is fixedly connected to the outer portion of the rotating shaft, the bottom end of the pressing sleeve is located in the sleeve shell and attached to the top end of the connecting piece, the pressing sleeve enables the inclined scraping pieces to be switched through the connecting piece, and the surfaces of the inclined scraping pieces are cleaned through the cleaning frame. Switching of the inclined scraping pieces is achieved through cooperation of the pressing sleeve and the connecting piece, cleaning of the inclined scraping pieces is achieved through the cleaning frame, after the inclined scraping pieces are switched, the cleaning frame can maintain uniform stress and stable state of all parts in the equipment operation process at the same time, abnormal conditions of the equipment are reduced, the equipment operation reliability is improved, and the service life of the equipment is prolonged. The long-term stable operation of the sewage treatment system is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to a sewage treatment and re - discharge device and process for discharged sewage based on safe coal mining. Background Art

[0002] During the processes of coal mining, coal washing and processing, and coal chemical production, a large amount of coal sewage containing harmful substances such as suspended solids, heavy metals, and organic pollutants is generated. To achieve the up - to - standard discharge of sewage and the recycling of water resources, it is usually necessary to use a multi - stage process combination such as "pretreatment - precipitation - filtration purification - advanced treatment" to treat the sewage. Among them, the precipitation link is a key step, and it is necessary to use a sludge scraper to scrape the coal sludge at the bottom of the sedimentation tank to the central mud outlet for discharge, so as to achieve solid - liquid separation.

[0003] However, in the prior art, the common sludge scrapers for coal sewage sedimentation tanks on the market mostly adopt a sludge scraping structure with central drive or peripheral drive. The scraper is connected to the driving device through a rotating shaft and rotates around the central axis of the sedimentation tank under the drive of the motor to scrape the precipitated coal sludge towards the central mud outlet. However, due to the characteristics of the coal sludge flocs in coal sewage, which have small particle size, high viscosity, and strong adsorbability, when the scraper rotates, some coal sludge will adhere to the surface and edge of the scraper. As the equipment continues to operate, the coal sludge accumulates continuously, resulting in an increase in the self - weight of the scraper, the load of the driving motor exceeding the rated power, a decrease in the rotation speed of the scraper, and a reduction in the amount of sludge scraped per unit time, seriously affecting the continuity of the sewage treatment system. At the same time, most of the existing sludge scraper blades adopt an intermittent structure to reduce the operating resistance, but the coal sludge is extremely easy to fill the gaps between the blades, forming a dense blocking layer. After blocking, the contact area between the rotating scraper and the water flow increases significantly, resulting in violent turbulence of the water flow in the sedimentation tank. The upward water flow formed by the turbulence will resuspend the precipitated coal sludge into the water body, increasing the suspended solid concentration of the effluent from the sedimentation tank and destroying the stability of the entire sewage treatment process. At the same time, the increase in the scraper load caused by coal sludge adhesion and blockage will accelerate the wear of key components such as bearings, shortening the service life of the equipment. Moreover, to remove the accumulated sludge on the scraper, it is necessary to frequently stop the machine for manual cleaning or high - pressure flushing, which not only increases the operation and maintenance workload but also prolongs the non - production time of the sewage treatment system, indirectly increasing the sewage treatment cost of the enterprise. Summary of the Invention

[0004] The purpose of the present invention is to provide a sewage treatment and re - discharge device and process for discharged sewage based on safe coal mining, so as to solve the problem that the sludge scraper of the sedimentation tank needs to continuously maintain efficient operation.

[0005] On the one hand, the present invention provides a sewage treatment and re - discharge device for coal safety mining, which includes a sedimentation tank and a ladder frame fixedly connected to the top of the sedimentation tank. It also includes a double - end frame fixedly connected to the middle of the ladder frame, a rotating shaft and a pressure sleeve fixedly connected to the output end of the double - end frame, a sleeve shell fixedly connected to the outside of the rotating shaft, a connecting piece slidably connected to the sleeve shell, a double - connecting frame fixedly connected to the connecting piece, two connecting rods respectively fixedly connected to both sides of the double - connecting frame, a plurality of inclined scraping blades equidistantly arranged and fixedly connected to the connecting rods, a plurality of cleaning frames equidistantly arranged and fixedly connected to the sleeve shell, and a threaded rod connected between the rotating shaft and the pressure sleeve. The rotating shaft is located outside the pressure sleeve, the bottom end of the pressure sleeve is located inside the sleeve shell and fits with the top end of the connecting piece. There are two connecting pieces and two double - connecting frames, which are symmetric about the central axis of the rotating shaft. The pressure sleeve makes the inclined scraping blades switch with each other through the connecting piece, and uses the cleaning frame to clean the surface of the inclined scraping blades.

[0006] Further, the connecting rod is divided into a first connecting rod and a second connecting rod, and the inclined scraping blades connected by the first connecting rod and the second connecting rod are staggered. The number of cleaning frames is twice that of the inclined scraping blades. The inclined scraping blades are located between two cleaning frames, and the bottom end of the cleaning frame is parallel to the inclined scraping blade.

[0007] Further, the connecting piece includes a slide bar slidably connected inside the sleeve shell, an arc piece fixedly connected to the slide bar, a strong spring connected between the rotating shaft and the arc piece, a half - slider fixedly connected to the bottom end of the slide bar, and a connecting shaft fixedly connected to the half - slider. The top end of the slide bar is arc - shaped.

[0008] Further, the pressure sleeve includes a sleeve shaft connected to the output end of the double - end frame, and an inclined block fixedly connected to the bottom end of the sleeve shaft. The bottom of the inclined block is an arc - inclined surface. The inclined block fits with the top end of the slide bar, and the inclined block is located inside the sleeve shell.

[0009] Further, two mounting rods are arranged outside the sleeve shell. The two mounting rods are symmetric about the central axis of the sleeve shell. The tops of a plurality of cleaning frames are fixedly connected to the mounting rods, and two sliding grooves are opened on the sleeve shell.

[0010] Further, the length from the bottom end to the top end of the arc - inclined surface is equal to the length of the sliding groove.

[0011] Further, a side piece is fixedly connected to the outside of the rotating shaft. The bottom end of the strong spring is connected to the side piece. The connecting shaft passes through the sliding groove and is fixedly connected to the double - connecting frame.

[0012] Further, the double - end frame includes a main motor fixedly connected to the ladder frame, and a secondary motor fixedly connected to the main motor. The output end of the main motor is connected to the rotating shaft, and the output end of the secondary motor is connected to the sleeve shaft.

[0013] Furthermore, the double connection frame is provided with a straight rod, and a reinforcing cable is connected between the straight rod and the end of the connecting rod far from the double connection frame.

[0014] On the other hand, the present invention provides: A process for treating and re-discharging discharged sewage based on safe coal mining, using a device for treating and re-discharging discharged sewage based on safe coal mining, which is characterized by including the following steps:

[0015] Water inlet: Sewage enters the inside of the sedimentation tank to prepare for solid-liquid separation.

[0016] Sedimentation separation: The sewage flows slowly, and the suspended solids settle to the bottom of the tank due to gravity, the clear water rises, and the upper layer of water overflows and enters the subsequent treatment process.

[0017] Sludge discharge and collection: The sludge at the bottom of the tank is processed by the double-end frame driving the rotating shaft through the inclined scraping blade.

[0018] Cleaning bucket: Discharge and process regularly, and at the same time, drive the replacement of different inclined scraping blades through the double-end frame pressing sleeve to ensure efficient cleaning.

[0019] Advantages of the present invention:

[0020] 1. The switching of the inclined scraping blade is realized through the cooperation of the pressing sleeve and the connecting piece, and the cleaning of the inclined scraping blade is realized through the cleaning frame. The cleaning frame can automatically clean the inclined scraping blade adhered with coal sludge after the inclined scraping blade is switched, without manual intervention, and the cleaning work can be completed by the operation of the equipment itself, ensuring that the sludge scraper always operates in an efficient state, improving the sewage treatment efficiency, ensuring the solid-liquid separation effect, and at the same time maintaining the uniform force and stable state of each component during the operation of the equipment, reducing the occurrence of equipment abnormalities, improving the reliability of equipment operation, and ensuring the long-term stable operation of the sewage treatment system.

[0021] 2. Through the fixed inclined scraping blade and the cleaning frame, the automatic cleaning of the inclined scraping blade is realized, reducing the violent turbulence of the water flow in the sedimentation tank, effectively preventing the re-suspension of the precipitated coal sludge, ensuring the stable water quality of the sedimentation tank effluent, and maintaining the stability of the entire sewage treatment process.

[0022] 3. By making different inclined scraping blades work alternately, avoiding the continuous work of a single inclined scraping blade, the working time of a single inclined scraping blade is greatly shortened each time, the friction time and contact times with the coal sludge are significantly reduced, and the scraping performance of the inclined scraping blade is guaranteed by reducing friction. Description of the drawings

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the first perspective of the sewage treatment and re-discharge equipment of the present invention;

[0024] Figure 2 It is a structure schematic diagram of the double-end frame of the sewage treatment and re-discharge equipment of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the rotating shaft of the sewage treatment and re - discharge equipment of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the connecting piece of the sewage treatment and re - discharge equipment of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the connecting rod of the sewage treatment and re - discharge equipment of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the pressure sleeve of the sewage treatment and re - discharge equipment of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the housing of the sewage treatment and re - discharge equipment of the present invention;

[0030] Figure 8 It is for the sewage treatment and re - discharge equipment of the present invention Figure 2 The enlarged schematic diagram at position A in it.

[0031] In the figure:

[0032] 1, sedimentation tank; 2, ladder frame; 3, double - end frame; 31, main motor; 32, secondary motor; 4, rotating shaft; 41, side piece; 5, pressure sleeve; 51, sleeve shaft; 52, inclined block; 521, arc inclined surface; 6, housing; 61, mounting rod; 62, sliding groove; 7, connecting piece; 71, sliding bar; 72, arc piece; 73, strong spring; 74, half - slider; 75, connecting shaft; 8, double - connecting frame; 81, straight rod; 9, connecting rod; 91, first connecting rod; 92, rear connecting rod; 10, inclined scraping piece; 11, cleaning frame; 12, threaded rod; 13, reinforcing cable. Specific embodiments

[0033] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0034] Example 1, refer to Figures 1-8, which is the first embodiment of the present invention, provides a sewage treatment and re - discharge device based on coal safety mining, including a sedimentation tank 1 and a ladder 2 fixedly connected to the top of the sedimentation tank 1. It also includes a double - end frame 3 fixedly connected to the middle of the ladder 2, a rotating shaft 4 and a pressing sleeve 5 fixedly connected to the output end of the double - end frame 3, a sleeve 6 fixedly connected to the outside of the rotating shaft 4, a connecting piece 7 slidably connected to the sleeve 6, a double - connecting frame 8 fixedly connected to the connecting piece 7, two connecting rods 9 respectively fixedly connected to both sides of the double - connecting frame 8, a plurality of inclined scraping blades 10 equidistantly arranged and fixedly connected to the connecting rods 9, a plurality of cleaning frames 11 equidistantly arranged and fixedly connected to the sleeve 6, and a threaded rod 12 connected between the rotating shaft 4 and the pressing sleeve 5. The rotating shaft 4 is located outside the pressing sleeve 5, the bottom end of the pressing sleeve 5 is located inside the sleeve 6 and fits with the top end of the connecting piece 7. There are two connecting pieces 7 and two double - connecting frames 8, which are symmetric about the central axis of the rotating shaft 4. The pressing sleeve 5 enables the inclined scraping blades 10 to switch with each other through the connecting piece 7, and uses the cleaning frame 11 to clean the surface of the inclined scraping blades 10, avoiding the increase in the self - weight of the inclined scraping blades 10 due to coal sludge adhesion and maintaining the continuous and efficient operation of the sewage treatment system.

[0035] Specifically, the basic structure of the device is composed of the sedimentation tank 1 and the ladder 2. The ladder 2 is firmly fixedly connected to the top of the sedimentation tank 1 by a combination of steel welding and bolts, providing a reliable support platform for the subsequent components of the device. The output end of the double - end frame 3 has two parts, which are respectively fixedly connected to the rotating shaft 4 and the pressing sleeve 5. The pressing sleeve 5 adopts a hollow cylindrical structure, and its bottom end is closely attached to the top end of the connecting piece 7 to achieve precise transmission and switching operations. The sleeve 6 is a cylindrical metal shell. Since there are two connecting pieces 7 and two double - connecting frames 8, there are four corresponding connecting rods 9, and the number of inclined scraping blades 10 connected to each connecting rod 9 is equal. In addition, the surface of the inclined scraping blades 10 is treated with wear resistance. In addition, multiple groups of cleaning frames 11 are equidistantly fixedly connected to the outer wall of the sleeve 6. The bottom end of the cleaning frame 11 does not contact the inclined scraping blades 10, but the gap between them is small, so that when the inclined scraping blades 10 move, the coal sludge adhered to the surface and edge of the inclined scraping blades 10 can be efficiently removed without damaging the surface of the inclined scraping blades 10. During operation, the rotation of the pressing sleeve 5 will push the corresponding connecting piece 7 by applying downward pressure, realizing the up - and - down movement and mutual switching of the inclined scraping blades 10 at different positions of the rotating shaft 4, and the cleaning frame 11 timely cleans the inclined scraping blades 10 with coal sludge switched down, thus forming an efficient and continuous sludge scraping operation process.

[0036] Referring to Figures 1-3 , the connecting rod 9 is divided into a first connecting rod 91 and a rear connecting rod 92, and the inclined scraping blades 10 connected by the first connecting rod 91 and the rear connecting rod 92 are arranged alternately. The number of cleaning frames 11 is twice that of the inclined scraping blades 10. The inclined scraping blades 10 are located between two cleaning frames 11, and the bottom end of the cleaning frame 11 is parallel to the inclined scraping blades 10.

[0037] Specifically, the connecting rod 9 is further subdivided into a first connecting rod 91 and a rear connecting rod 92. The two have the same structure and are both made of high-strength alloy steel pipes. In terms of spatial layout, due to the control of the pressure sleeve 5 and the connecting piece 7, the first connecting rod 91 and the rear connecting rod 92 are distributed in a stepped manner. At the same time, the inclined scraping blades 10 they connect form a staggered array. At the same time, the length of the inclined scraping blade 10 is less than the distance between the first connecting rod 91 and the rear connecting rod 92 to avoid collisions during switching.

[0038] In addition, a highly elastic ethylene propylene diene monomer (EPDM) rubber plate can be sleeved on the surface of the bottom end of each cleaning frame 11. Serrated textures are provided on the surface of the rubber plate. The rubber scraping plate uses its own elastic deformation to closely fit the surface and back of the inclined scraping blade 10, completely stripping the adhered slime, which can further increase the effect and thus ensure the continuous and stable operation of the sewage treatment system.

[0039] Refer to Figures 1-4 , the connecting piece 7 includes a slide bar 71 slidably connected inside the sleeve 6, an arc piece 72 fixedly connected to the slide bar 71, a strong spring 73 connected between the rotating shaft 4 and the arc piece 72, a semi-slider 74 fixedly connected to the bottom end of the slide bar 71, and a connecting shaft 75 fixedly connected to the semi-slider 74. The top end of the slide bar 71 is arc-shaped.

[0040] Specifically, the slide bar 71 is in a long strip shape. The surfaces of the slide bar 71 and the semi-slider 74 adopt a grinding process, enabling the whole to slide smoothly and stably inside the sleeve 6. The slide bar 71 and the arc piece 72 are fixedly connected by high-strength welding. The arc piece 72 surrounds the outside of the rotating shaft 4, and a strong spring 73 is provided between its inner side and the rotating shaft 4. At the same time, there are two strong springs 73 and they are symmetric about the central axis of the slide bar 71. The two strong springs 73 are used to ensure the rebound speed of the slide bar 71, ensure the stability of the sliding of the slide bar 71, and ensure that there is enough resilience to pull multiple components. Therefore, it is necessary to install a strong spring 73 with a relatively high spring constant.

[0041] In addition, the two connecting pieces 7 correspond to the first connecting rod 91 and the rear connecting rod 92 respectively. When the first connecting rod 91 is below the rear connecting rod 92, the two connecting pieces 7 also form an upper and lower step. For the connecting piece 7 at the lower part, its strong spring 73 is in a compressed state. That is, when the pressure sleeve 5 rotates, it will exert a downward pressure on one connecting piece 7 and at the same time reduce the pressure on the other connecting piece 7. For the squeezed connecting piece 7, its slide bar 71 and semi-slider 74 will slide synchronously, and then the double connecting frame 8 and the installed connecting rod 9 will move synchronously. At the same time, the strong spring 73 will also be compressed. For the connecting piece 7 with reduced pressure, its strong spring 73 will quickly rebound, resetting the whole connecting piece 7, and the corresponding components connected to it will also move up accordingly, and then switch.

[0042] Refer to Figures 2-6, the pressing sleeve 5 includes a sleeve shaft 51 connected to the output end of the double-end frame 3, and an inclined block 52 fixedly connected to the bottom end of the sleeve shaft 51. The bottom of the inclined block 52 is an arc inclined surface 521. The inclined block 52 fits against the top end of the slide bar 71, and the inclined block 52 is located inside the sleeve housing 6.

[0043] Specifically, at the bottom end of the sleeve shaft 51, the inclined block 52 is fixedly connected. The bottom of the inclined block 52 is an arc inclined surface 521, which can fit against the arc-shaped structure at the top end of the slide bar 71. During the rotation of the inclined block 52, a stable force conduction path is ensured. When the double-end frame 3 drives the sleeve shaft 51 to rotate 180 degrees, the bottom end of the arc inclined surface 521 of the inclined block 52 switches positions, applying pressure to the top end of one slide bar 71, prompting the slide bar 71 to slide smoothly along the inner wall of the sleeve housing 6, while the other slide bar 71 will lose pressure and move back, thereby driving the double connection frame 8, the connecting rod 9, and the inclined scraping blade 10 connected thereto to move synchronously, thus realizing the switching action of different inclined scraping blades 10. At the same time, the entire inclined block 52 is located inside the sleeve housing 6, which can not only ensure the free movement of the inclined block 52 but also effectively prevent impurities such as slime from entering and affecting its working performance.

[0044] Refer to Figures 2-7 , two mounting rods 61 are provided outside the sleeve housing 6. The two mounting rods 61 are symmetric about the central axis of the sleeve housing 6. The tops of multiple cleaning frames 11 are fixedly connected to the mounting rods 61. Two sliding grooves 62 are formed on the sleeve housing 6. The length from the bottom end to the top end of the arc inclined surface 521 is equal to the length of the sliding groove 62.

[0045] A side piece 41 is fixedly connected to the outside of the rotating shaft 4. The bottom end of the strong spring 73 is connected to the side piece 41. The connecting shaft 75 passes through the sliding groove 62 and is fixedly connected to the double connection frame 8.

[0046] Specifically, the two sliding grooves 62 restrict the moving path of the connecting shaft 75, ensuring that the connecting shaft 75 can only move up and down. When different inclined scraping blades 10 are switched, the moving distance of both is also equal to the length of the sliding groove 62. The sliding groove 62 is formed by milling, and its inner wall is ground to reduce friction. The slide bar 71 can complete the sliding of the entire stroke in the sliding groove 62. One end of the connecting shaft 75 is connected to the half slider 74, and the other end extends outside the sleeve housing 6 and is fixedly connected to the double connection frame 8 with high-strength bolts. During the operation of the equipment, the connecting shaft 75 can accurately transmit the sliding displacement of the slide bar 71 to the double connection frame 8, thereby driving the inclined scraping blade 10 to achieve a smooth switch, ensuring the efficient operation of the entire sludge scraping system, ensuring the accuracy and reliability of the cooperation between the components of the equipment, and ensuring the efficient and stable operation of the sludge scraping operation.

[0047] In addition, the side piece 41 ensures that it can provide a stable and accurate support point for the strong spring 73 during the rotation of the rotating shaft 4. At the same time, the side piece 41 is provided with a square opening to ensure the movement of the slide bar 71.

[0048] Refer to Figures 1-8 , the double-end frame 3 includes a main motor 31 fixedly connected to the ladder frame 2, and a secondary motor 32 fixedly connected to the main motor 31. The output end of the main motor 31 is connected to the rotating shaft 4, and the output end of the secondary motor 32 is connected to the sleeve shaft 51.

[0049] Among them, when the rotating shaft 4 rotates, the pressure sleeve 5, the sleeve 6, the connecting member 7, the double connecting frame 8, the connecting rod 9, the inclined scraping blade 10, and the cleaning frame 11 will all rotate synchronously. When it is necessary to switch the inclined scraping blade 10, stop the main motor 31, remove the threaded rod 12 between the rotating shaft 4 and the pressure sleeve 5, and then drive the pressure sleeve 5 to rotate 180 degrees by the secondary motor 32. The secondary motor 32 and the pressure sleeve 5 are driven by two bevel gears, and the secondary motor 32 needs to be a motor that can idle.

[0050] Refer to Figures 1-8 , the double connecting frame 8 is provided with a straight rod 81, and a reinforcing cable 13 is connected between the straight rod 81 and the end of the connecting rod 9 far away from the double connecting frame 8 to increase the stability during the operation of the overall equipment.

[0051] The working principle of the present invention is as follows: First, after the operator determines that the inclined scraper 10 needs to be switched, the main motor 31 is controlled to stop running. Subsequently, the operator removes the threaded rod 12 between the rotating shaft 4 and the pressing sleeve 5 to release the restriction on the axial movement of the pressing sleeve 5. Then, the secondary motor 32 is controlled to start working. The secondary motor 32 drives the sleeve shaft 51 to rotate, thereby driving the inclined block 52 fixed at the bottom end of the sleeve shaft 51 to rotate. Since the bottom of the inclined block 52 is an arc-shaped inclined surface 521 and fits with the top end of the slide bar 71, during the rotation of the inclined block 52 by 180 degrees, the bottom end of the arc-shaped inclined surface 521 switches positions, and the originally uncompressed side of the slide bar 71 begins to receive the pressure exerted by the arc-shaped inclined surface 521 of the inclined block 52. Under the squeezing action, the slide bar 71 smoothly slides along the chute 62 on the inner wall of the sleeve 6. Since the chute 62 restricts the movement path of the connecting shaft 75, it is ensured that the connecting shaft 75 can only move up and down. The sliding of the slide bar 71 is accurately transmitted to the double connecting frame 8 through the connecting shaft 75, thereby driving the connecting rod 9 and the inclined scraper 10 connected thereto to move downward synchronously. At the same time, the strong spring 73 in the connecting member 7 is compressed, storing elastic potential energy. And for the originally compressed side of the slide bar 71, with the rotation of the inclined block 52, the pressure is lost. At this time, the strongly compressed spring 73 quickly rebounds, and the generated resilience pulls the corresponding connecting member 7 as a whole to move upward, and the double connecting frame 8, the connecting rod 9, and the inclined scraper 10 connected thereto also move upward and reset synchronously. Through the lowering and rising of the two side connecting members 7, the up and down switching of the inclined scraper 10 at different positions is realized. The originally working inclined scraper 10 is switched to the non-working position, and the clean inclined scraper 10 on the other side enters the working state. After the switching is completed, the operator reinstalls the threaded rod 12 between the rotating shaft 4 and the pressing sleeve 5 to fix the position of the pressing sleeve 5. Subsequently, the main motor 31 is restarted, driving the rotating shaft 4 to rotate, driving components such as the pressing sleeve 5, the sleeve 6, the connecting member 7, the double connecting frame 8, the connecting rod 9, the inclined scraper 10, and the cleaning frame 11 to rotate synchronously. The newly switched-to working-position inclined scraper 10 starts to perform the mud scraping operation, thus forming an efficient and continuous mud scraping operation process.

[0052] Example two, referring to Figures 1-8 , which is the second embodiment of the present invention, provides a process for discharging, treating, and re-discharging sewage based on coal safety mining. Using a device for discharging, treating, and re-discharging sewage based on coal safety mining, it includes the following steps:

[0053] Water inlet: Sewage enters the inside of the sedimentation tank 1 to prepare for solid-liquid separation.

[0054] Sedimentation separation: The sewage flows slowly, and the suspended solids settle to the bottom of the tank due to gravity, and the clear water rises. The upper layer of water overflows and enters the subsequent treatment process.

[0055] Sludge discharge and collection: The sludge at the bottom of the tank is processed by the inclined scraper 10 through the double-end frame 3 driving the rotating shaft 4.

[0056] Cleaning bucket: Discharge and process regularly. At the same time, drive 5 through the double-end frame 3 pressing sleeve to replace different inclined scraping blades 10 to ensure efficient cleaning.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A sewage treatment and re - discharge device for coal safety mining, comprising a sedimentation tank (1) and a ladder frame (2) fixedly connected to the top of the sedimentation tank (1), characterized in that: It further includes a double-end frame (3) fixedly connected to the middle of the ladder frame (2), a rotating shaft (4) and a pressing sleeve (5) fixedly connected to the output end of the double-end frame (3), a housing (6) fixedly connected to the outside of the rotating shaft (4), a connecting member (7) slidably connected to the housing (6), a double-connecting frame (8) fixedly connected to the connecting member (7), two connecting rods (9) respectively fixedly connected to both sides of the double-connecting frame (8), a plurality of inclined scraping blades (10) equidistantly arranged and fixedly connected to the connecting rods (9), a plurality of cleaning frames (11) equidistantly arranged and fixedly connected to the housing (6), and a threaded rod (12) connected between the rotating shaft (4) and the pressing sleeve (5). The rotating shaft (4) is located outside the pressing sleeve (5). The bottom end of the pressing sleeve (5) is located inside the housing (6) and fits against the top end of the connecting member (7). Both the connecting member (7) and the double-connecting frame (8) are provided with two and are symmetrical about the central axis of the rotating shaft (4). The pressing sleeve (5) enables the inclined scraping blades (10) to switch with each other through the connecting member (7), and uses the cleaning frame (11) to clean the surface of the inclined scraping blades (10).

2. The sewage discharge treatment and re - discharge equipment for coal safety mining according to claim 1, wherein: The connecting rod (9) is divided into a first connecting rod (91) and a rear connecting rod (92). The inclined scraping blades (10) connected by the first connecting rod (91) and the rear connecting rod (92) are arranged alternately. The number of the cleaning frames (11) is twice that of the inclined scraping blades (10). The inclined scraping blades (10) are located between two cleaning frames (11). The bottom end of the cleaning frame (11) is parallel to the inclined scraping blades (10).

3. The sewage discharge treatment and re-discharge equipment for coal safety mining according to claim 2, wherein: The connecting member (7) includes a sliding strip (71) slidably connected to the inside of the housing (6), an arc-shaped piece (72) fixedly connected to the sliding strip (71), a strong spring (73) connected between the rotating shaft (4) and the arc-shaped piece (72), a semi-slider (74) fixedly connected to the bottom end of the sliding strip (71), and a connecting shaft (75) fixedly connected to the semi-slider (74). The top end of the sliding strip (71) is arc-shaped.

4. The sewage discharge treatment and re - discharge equipment for coal safety mining according to claim 3, wherein: The pressing sleeve (5) includes a sleeve shaft (51) connected to the output end of the double-end frame (3), and an inclined block (52) fixedly connected to the bottom end of the sleeve shaft (51). The bottom of the inclined block (52) is an arc-shaped inclined surface (521). The inclined block (52) fits against the top end of the sliding strip (71). The inclined block (52) is located inside the housing (6).

5. The sewage discharge treatment and re - discharge equipment for coal safety mining according to claim 4, characterized in that: Two mounting rods (61) are arranged on the outside of the housing (6). The two mounting rods (61) are symmetrical about the central axis of the housing (6). The tops of a plurality of the cleaning frames (11) are fixedly connected to the mounting rods (61). Two sliding grooves (62) are formed in the housing (6).

6. The sewage discharge treatment and re - discharge equipment for coal safety mining according to claim 5, characterized in that: The length from the bottom end to the top end of the arc-shaped inclined surface (521) is equal to the length of the sliding groove (62).

7. The sewage discharge treatment and re - discharge equipment for coal safety mining according to claim 5, characterized in that: A side piece (41) is fixedly connected to the outside of the rotating shaft (4). The bottom end of the strong spring (73) is connected to the side piece (41). The connecting shaft (75) passes through the sliding groove (62) and is fixedly connected to the double-connecting frame (8).

8. The sewage discharge treatment and re - discharge equipment for coal safety mining according to claim 4, characterized in that: The double-end frame (3) includes a main motor (31) fixedly connected to the ladder frame (2), and a secondary motor (32) fixedly connected to the main motor (31). The output end of the main motor (31) is connected to the rotating shaft (4), and the output end of the secondary motor (32) is connected to the sleeve shaft (51).

9. The sewage treatment and re - discharge equipment for coal safety mining according to claim 1, characterized in that: The double-connection frame (8) is provided with a straight rod (81), and a reinforcing cable (13) is connected between the straight rod (81) and the end of the connecting rod (9) away from the double-connection frame (8).

10. A process for treating and re-discharging the discharged sewage based on safe coal mining, which uses a device for treating and re-discharging the discharged sewage based on safe coal mining according to any one of claims 1-9, characterized in that, It includes the following steps: Water inlet: Sewage enters the inside of the sedimentation tank (1) to prepare for solid-liquid separation; Sedimentation separation: The sewage flows slowly, and the suspended solids settle to the bottom of the tank due to gravity, the clear water rises, and the upper layer of water overflows and enters the subsequent treatment process; Sludge discharge and collection: The rotating shaft (4) is driven by the double-end frame (3) to process the sludge at the bottom of the tank through the inclined scraping blade (10); Cleaning bucket: Discharge and process regularly. At the same time, the pressing sleeve drive (5) of the double-end frame (3) is used to replace different inclined scraping blades (10) to ensure efficient cleaning.

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