HFST aerobic fluidized reactor with pulsating sludge removal system for water treatment

Abstract

The present application is about a water treatment system of a HFST aerobic fluidized reactor equipped with an innovative pulsating mud discharge system. It includes a sedimentation cylinder and a pulsating mud scraping mechanism; a mud and water inlet pipe is provided at the top of the sedimentation cylinder, and a mud and water outlet pipe is provided at the bottom center of the sedimentation cylinder; a pulsating mud scraping mechanism is provided at the inner bottom of the sedimentation cylinder; the pulsating mud scraping mechanism includes a main connecting rod, a scraper, a top rod, a mud scraping motor, and a mud scraping shaft; the scraper of the pulsating mud scraping mechanism can move outward in an elevated posture, effectively preventing the settled sludge from being disturbed. When moving inward to scrape the mud, it will automatically drop to ensure the smooth progress of the scraping action. The present application arranges a pulsating mud scraping mechanism at the bottom of the sedimentation cylinder, and the pulsating mud scraping mechanism scrapes the settled sludge to the mud and water outlet pipe to ensure the smooth discharge of the settled sludge.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment equipment, and in particular to a water treatment system of a HFST aerobic fluidized bed reactor equipped with a pulsating sludge discharge system. Background Art

[0002] The process of treating sewage using an aerobic fluidized bed reactor usually includes three steps: aeration in an aeration tank, sedimentation in a primary sedimentation tank, and sedimentation in a secondary sedimentation tank. In the sedimentation tank, the solid particles in the muddy water are flocculated under the action of flocculants and aerobic organisms, and then separated from the sewage and precipitated to the bottom of the sedimentation tank.

[0003] Most of the existing sedimentation tanks are designed with an inclined surface. The settled sludge slides down to the sludge discharge pipe located at the lowest position of the inclined surface by gravity for discharge. Since the sludge is not fluid, a large amount of sludge may be deposited in the sedimentation tank but cannot be discharged normally. The general solution is to empty the sedimentation tank for cleaning, which is inconvenient and time-consuming. Summary of the invention

[0004] In order to solve or partially solve the problems existing in the related technology, the present application provides a water treatment system of a HFST aerobic fluidized reactor equipped with a pulsating sludge discharge system, aiming to solve the technical problem of poor discharge of sediment sludge.

[0005] The present application provides a water treatment system of a HFST aerobic fluidized reactor equipped with a pulsating mud removal system, including a sedimentation cylinder and a pulsating mud scraping mechanism;

[0006] A mud and water inlet pipe is provided at the top of the sedimentation cylinder, and a mud and water outlet pipe is provided at the center of the bottom of the sedimentation cylinder; a pulsating mud scraping mechanism is provided at the inner bottom of the sedimentation cylinder;

[0007] The pulsating mud scraping mechanism comprises a main connecting rod, a scraper, a push rod, a mud scraping motor and a mud scraping rotating shaft;

[0008] The scraper shaft is rotatably installed in the sedimentation cylinder and is coaxially arranged with the sedimentation cylinder; an eccentric cam is arranged at the lower end of the scraper shaft, a guide groove is constructed on the side surface of the eccentric cam, and the upper end of the scraper shaft is connected to the output shaft of the scraper motor installed on the sedimentation cylinder;

[0009] The main connecting rod is arranged above the inner bottom surface of the sedimentation cylinder, and is arranged parallel to the inner bottom surface of the sedimentation cylinder, and the projection of the main connecting rod on the horizontal plane extends along the radial direction of the sedimentation cylinder; a waist-shaped guide hole is provided on the main connecting rod, and a guide rod fixedly connected to the inner bottom surface of the sedimentation cylinder is provided in the waist-shaped guide hole;

[0010] One end of the main connecting rod close to the eccentric cam is movably connected to the guide groove, and a limiting hole away from the eccentric cam is provided on the main connecting rod, and a baffle in the shape of "7" is provided on the side of the limiting hole close to the eccentric cam; the lower end of the push rod is hinged to the bottom surface of the sedimentation cylinder, and the upper end passes through the limiting hole;

[0011] The scrapers extending toward the bottom surface of the sedimentation cylinder are arranged at intervals on the main connecting rod;

[0012] The scraper motor drives the eccentric cam to rotate via the scraper shaft, and the end of the main connecting rod connected to the guide groove moves along the guide groove, and then the eccentric cam first causes the main connecting rod to move in a direction away from the eccentric cam, and at the same time lifts the end of the main connecting rod close to the eccentric cam, so that the scraper moves outward in a state where it does not contact the sludge deposited at the bottom of the sedimentation cylinder, and then the eccentric cam drives the main connecting rod to move in a direction close to the eccentric cam, and at the same time lowers the end of the main connecting rod close to the eccentric cam, so that the scraper moves inward in a state where it contacts the bottom surface of the sedimentation cylinder, and then scrapes the sludge deposited at the bottom of the sedimentation cylinder toward the bottom center of the sedimentation cylinder;

[0013] During the outward movement of the main connecting rod, initially, the upper end of the push rod is inclined toward the side of the eccentric cam and abuts against the baffle plate. As the main connecting rod moves, the push rod gradually rotates toward the side away from the eccentric cam and pushes up the end of the main connecting rod away from the eccentric cam, so that the scraper does not contact the bottom surface of the sedimentation cylinder.

[0014] During the inward movement of the main connecting rod, the upper end of the push rod does not contact the baffle, thereby preventing the main connecting rod from being lifted.

[0015] In some embodiments, the eccentric cam includes a central connecting portion, an upper connecting portion, a lower connecting portion, and a cam connecting rod;

[0016] The upper connecting part and the lower connecting part are both annular, and the two are stacked, and the guide groove is arranged between the upper connecting part and the lower connecting part; the upper connecting part and the lower connecting part are respectively fixedly connected to the central connecting part through the cam connecting rod;

[0017] The main connecting rod is clamped with the guide groove.

[0018] In some embodiments, the scraper is hinged to the main connecting rod, and a limit block is provided on a side of the scraper close to the eccentric cam.

[0019] In some embodiments, a substantially funnel-shaped partition plate is provided on the top of the sedimentation cylinder, and the partition plate divides the internal cavity of the sedimentation cylinder into a stirring cavity and a sedimentation cavity;

[0020] The bottom of the stirring chamber is provided with material guide pipes at intervals around the circumference of the sedimentation cylinder, and the material guide pipes are arranged obliquely and extend to the inner side wall of the sedimentation cylinder;

[0021] A nozzle connected to the muddy water inlet pipe is arranged on the top of the stirring chamber.

[0022] In some embodiments, the spray head includes a feed pipe, a rotating pipe, and a spray pipe;

[0023] The two ends of the rotating tube are closed, the feeding tube is rotatably mounted on the upper end of the rotating tube, a connecting hole matching the position of the feeding tube is provided on the rotating tube, and the internal cavity of the rotating tube is connected with the internal cavity of the feeding tube through the connecting hole;

[0024] The lower end of the feed pipe is provided with the spray pipe which is in communication with the inner cavity of the rotating pipe, and the free end of the spray pipe extends in a horizontal direction perpendicular to the radial direction of the rotating pipe.

[0025] In some embodiments, the upper end of the rotating tube is connected to the scraper motor, and the lower end of the rotating tube is connected to the upper end of the scraper shaft.

[0026] In some schemes, a reduction housing is provided in the middle of the partition plate, a sun gear and an outer gear ring are rotatably mounted coaxially in the reduction housing, and a planetary gear is provided between the sun gear and the outer gear ring;

[0027] The lower end of the rotating tube is connected to the sun gear, and the outer gear ring is connected to the upper end of the mud scraping shaft.

[0028] In some embodiments, a mesh cylinder coaxially arranged therewith is fixedly installed in the sedimentation cylinder.

[0029] In some embodiments, a separation cylinder coaxially arranged therewith is fixedly installed in the net cylinder, the bottom of the separation cylinder is closed and a mud discharge pipe is provided.

[0030] The technical solution provided by this application may have the following beneficial effects:

[0031] The present application provides a pulsating scraper mechanism at the bottom of the sedimentation cylinder, and the pulsating scraper mechanism scrapes the deposited sludge to the mud and water outlet pipe to ensure smooth discharge of the deposited sludge. The scraper of the pulsating scraper mechanism can move outward in an elevated posture, effectively preventing the deposited sludge from being disturbed.

[0032] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0034] Figure 1 is a structural schematic diagram of a water treatment system shown in an embodiment of the present application;

[0035] Figure 2 is another structural schematic diagram of the water treatment system shown in the embodiment of the present application;

[0036] Figure 3 is a structural schematic diagram of a pulsating sludge scraping mechanism of a water treatment system shown in an embodiment of the present application;

[0037] Figure 4 is a structural schematic diagram of an eccentric cam of a water treatment system shown in an embodiment of the present application;

[0038] Figure 5 is a schematic diagram of the connection between the main connecting rod and the scraper of the water treatment system shown in the embodiment of the present application;

[0039] Figure 6 is another structural schematic diagram of a water treatment system shown in an embodiment of the present application;

[0040] Figure 7 yes Figure 6 A magnified image of point A;

[0041] Figure 8 Schematic diagram of the structure of the nozzle of the water treatment system shown in the embodiment of the present application; Figure numerals:

[0042] 1. Sedimentation cylinder; 101. Mud and water inlet pipe; 102. Mud and water outlet pipe;

[0043] 2. Pulsating mud scraping mechanism; 201. Main connecting rod; 2011. Waist-shaped guide hole; 2012. Limiting hole; 202. Scraper; 2021. Limiting block; 203. Push rod; 204. Mud scraping motor; 205. Mud scraping shaft; 206. Eccentric cam; 2061. Guide groove; 2062. Center connecting part; 2063. Upper connecting part; 2064. Lower connecting part; 2065. Cam connecting rod; 207. Guide rod; 208. Baffle;

[0044] 3. Separator plate; 301. Material guide pipe;

[0045] 4. Nozzle; 401. Feed pipe; 402. Rotating pipe; 4021. Connecting hole; 403. Spraying pipe; 404. Speed ​​reduction housing; 405. Sun gear; 406. Outer gear ring; 407. Planetary gear;

[0046] 5. Net cylinder;

[0047] 6. Separation tube; 601. Second through hole; 602. Mud discharge pipe; 603. Overflow pipe; DETAILED DESCRIPTION

[0048] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0049] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0050] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0051] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] Embodiment 1:

[0053] See also Figure 1-Figure 4The present application provides a water treatment system of a HFST aerobic fluidized reactor equipped with a pulsating mud removal system, including a sedimentation cylinder 1 and a pulsating mud scraping mechanism 2; the sedimentation cylinder 1 is made of metal material or cast, and is in the shape of a round hollow column.

[0054] A muddy water inlet pipe 101 is provided at the top of the sedimentation cylinder 1, and the muddy water inlet pipe 101 is connected to the aeration tank, and is used to introduce the sewage after aeration into the sedimentation cylinder 1. In the sedimentation cylinder 1, the sewage is mixed with the flocculant and left to stand, so that the impurities in the sewage are separated under the flocculation effect and precipitated at the bottom of the sedimentation cylinder 1, and the clean water is discharged through the overflow hole set at the top of the sedimentation cylinder 1, so as to achieve the purpose of muddy water separation. A muddy water outlet pipe 102 is provided at the bottom center of the sedimentation cylinder 1, which is used to discharge the precipitated sludge from the sedimentation cylinder 1.

[0055] A pulsating sludge scraping mechanism 2 is provided at the inner bottom of the sedimentation cylinder 1, and the pulsating sludge scraping mechanism 2 is used to scrape the sludge settled at the bottom of the sedimentation cylinder 1 toward the mud and water outlet pipe 102 to facilitate the discharge of the sludge; in order to facilitate the sludge to gather in the mud and water outlet pipe 102, the bottom of the sedimentation cylinder 1 is roughly funnel-shaped.

[0056] The pulsating scraper mechanism 2 includes a main connecting rod 201, a scraper plate 202, a push rod 203, a scraper motor 204, and a scraper shaft 205; the scraper shaft 205 is rotatably installed in the sedimentation cylinder 1 and is coaxially arranged with the sedimentation cylinder 1; an eccentric cam 206 is arranged at the lower end of the scraper shaft 205, and a guide groove 2061 is constructed on the side surface of the eccentric cam 206; the upper end of the scraper shaft 205 is connected to the output shaft of the scraper motor 204 installed on the sedimentation cylinder 1, and the scraper motor 204 is powered by an external power supply. When the scraper motor 204 is powered on and rotated, the eccentric cam 206 is driven to rotate through the scraper shaft 205.

[0057] The guide groove 2061 at a position far from the rotation center point of the eccentric cam 206 is at a lower vertical height, and the guide groove 2061 at a position close to the rotation center point of the eccentric cam 206 is at a higher vertical height.

[0058] The main connecting rod 201 is arranged above the inner bottom surface of the sedimentation cylinder 1, that is, the main connecting rod 201 and the inner bottom surface of the sedimentation cylinder 1 do not contact each other; the main connecting rod 201 is arranged parallel to the inner bottom surface of the sedimentation cylinder 1, and the projection of the main connecting rod 201 on the horizontal plane extends along the radial direction of the sedimentation cylinder 1; the main connecting rod 201 is provided with a waist-shaped guide hole 2011, and the waist-shaped guide hole 2011 is provided with a guide rod 207 fixedly connected to the inner bottom surface of the sedimentation cylinder 1, and the guide rod 207 is arranged perpendicular to the inner bottom surface of the sedimentation cylinder 1 to provide a better guiding effect. Through the cooperation of the guide rod 207 and the waist-shaped guide hole 2011, the main connecting rod 201 can only move up and down in the vertical direction or move in the horizontal direction along the radial direction of the sedimentation cylinder 1.

[0059] One end of the main connecting rod 201 close to the eccentric cam 206 is movably connected to the guide groove 2061, and a limiting hole 2012 away from the eccentric cam 206 is provided on the main connecting rod 201, and the limiting hole 2012 is a waist-shaped hole. A "7"-shaped baffle 208 is provided on the side of the limiting hole 2012 close to the eccentric cam 206, and the end of the horizontal section of the baffle 208 extends to above the center of one end of the limiting hole 2012; the lower end of the push rod 203 is hinged to the bottom surface of the sedimentation cylinder 1, and the upper end passes through the limiting hole 2012; scrapers 202 extending toward the bottom surface of the sedimentation cylinder 1 are arranged at intervals on the main connecting rod 201.

[0060] Working process of pulsating scraper mechanism 2:

[0061] 1. The main connecting rod 201 moves outward in the lifted state, so that the scraper 202 does not come into contact with the deposited sludge, avoiding the problem that the scraper 202 pushes the deposited sludge outward and reduces the sludge discharge efficiency. At the same time, the scraper 202 is prevented from disturbing the deposited sludge.

[0062] 2. The main connecting rod 201 moves inward at a lower position, and pushes the settled sludge to the mud and water inlet pipe 101 through the scraper 202.

[0063] Specific:

[0064] The scraper motor 204 drives the eccentric cam 206 to rotate through the scraper shaft 205, and the rotation of the eccentric cam 206 drives the main connecting rod 201 to move. Specifically, the end of the main connecting rod 201 connected to the guide groove 2061 moves along the guide groove 2061. In the process of moving from the rotation center point of the eccentric cam 206 to the rotation center point of the eccentric cam 206, the eccentric cam 206 drives the main connecting rod 201 to move away from the eccentric cam 206, and at the same time, the end of the main connecting rod 201 close to the eccentric cam 206 is raised, so that the scraper 202 is in a In the process of moving from the rotation center point away from the eccentric cam 206 to the rotation center point close to the eccentric cam 206, the eccentric cam 206 drives the main connecting rod 201 to move in the direction close to the eccentric cam 206, and at the same time lowers the end of the main connecting rod 201 close to the eccentric cam 206, so that the scraper 202 is in contact with the bottom surface of the sedimentation cylinder 1 and moves inward, thereby scraping the sludge deposited at the bottom of the sedimentation cylinder 1 toward the mud and water outlet pipe 102 located at the bottom center of the sedimentation cylinder 1. In this way, the end of the main connecting rod 201 close to the eccentric cam 206 moves outward at a higher position and moves inward at a lower position.

[0065] During the outward movement of the main connecting rod 201, initially, one end of the main connecting rod 201 close to the eccentric cam 206 is lifted up by the action of the eccentric cam 206, and the scraper 202 on the other end contacts the inner bottom surface of the sedimentation tube 1, and the upper end of the push rod 203 is inclined toward the side of the eccentric cam 206 and abuts against the bottom surface of the horizontal section of the baffle 208. As the main connecting rod 201 moves outward, the push rod 203 gradually rotates toward the side away from the eccentric cam 206, and moves the main connecting rod 201 away from the eccentric cam 206. The upper end of the push rod 203 is lifted upwards, so that the scraper 202 will not contact the bottom surface of the sedimentation tube 1, that is, the main connecting rod 201 is lifted during the outward movement of the main connecting rod 201; when the main connecting rod 201 moves outward to the limit distance, the upper end of the push rod 203 tilts to the side away from the eccentric cam 206 and slides out of the horizontal section of the baffle 208, and then the main connecting rod 201 moves inwards. During this process, the upper end of the push rod 203 does not contact the baffle 208, and the upper end of the push rod 203 can extend upwards, thereby preventing the main connecting rod 201 from being lifted. In this way, the end of the main connecting rod 201 away from the eccentric cam 206 moves outward at a higher position and moves inward at a lower position.

[0066] In this embodiment, in order to prevent the upper end of the push rod 203 from detaching from the main connecting rod 201, a limiting ball is provided at the upper end of the push rod 203, and the diameter of the limiting ball is larger than the limiting hole 2012; at the same time, the contact area between the push rod 203 and the baffle 208 can be increased through the limiting ball, thereby reducing the probability of damage to the baffle 208.

[0067] In this embodiment, a plurality of pulsating scraper mechanisms 2 may be provided to reduce the load of a single pulsating scraper mechanism 2 , thereby reducing the probability of damage thereof. The plurality of pulsating scraper mechanisms 2 may be arranged at intervals around the circumference of the sedimentation drum 1 .

[0068] Furthermore, the scraper 202 can be configured to be in an arc shape or a strip shape. Specific embodiment 2:

[0070] Based on the first embodiment, in this embodiment, if Figure 4 As shown, the eccentric cam 206 includes a central connecting portion 2062, an upper connecting portion 2063, a lower connecting portion 2064, and a cam connecting rod 2065; the projections of the upper connecting portion 2063 and the lower connecting portion 2064 on the horizontal plane are consistent, both are ring-shaped, and the two are stacked, the upper connecting portion 2063 is located above the lower connecting portion 2064, and a guide groove 2061 is arranged between the upper connecting portion 2063 and the lower connecting portion 2064; the central connecting portion 2062 is located at the rotation center of the upper connecting portion 2063 and the lower connecting portion 2064, and the upper connecting portion 2063 and the lower connecting portion 2064 are respectively fixedly connected to the central connecting portion 2062 through the cam connecting rod 2065, thereby connecting the central connecting portion 2062, the upper connecting portion 2063 and the lower connecting portion 2064 as a whole.

[0071] The end of the main connecting rod 201 close to the eccentric cam 206 is H-shaped (such as Figure 5 As shown), and is inserted into the slot, and then engaged with the guide slot 2061; when the eccentric cam 206 rotates, it can drive the main connecting rod 201 to move up and down in the vertical direction, and can also drive the main connecting rod 201 to move outward or inward in the horizontal direction along the radial direction of the sedimentation barrel 1; at the same time, the eccentric cam 206 of this structure can effectively reduce the projection area of ​​the eccentric cam 206 in the horizontal direction, thereby reducing the amount of sludge deposited on the eccentric cam 206, and the eccentric cam 206 rotates more smoothly, which is also more conducive to the discharge of the deposited sludge. Specific embodiment three:

[0073] Based on any of the above embodiments, in this embodiment, if Figure 5 As shown, the scraper 202 is hinged to the main connecting rod 201, and a limit block 2021 is provided on the side of the scraper 202 close to the eccentric cam 206, so that the scraper 202 can rotate to the side away from the eccentric cam 206 but cannot rotate to the other side; when the main connecting rod 201 moves outward, if there is a lot of deposited silt, the bottom end of the scraper 202 rotates under the action of the silt, and then its bottom end is lifted to prevent the scraper 202 from disturbing the deposited silt. Specific embodiment four:

[0075] Based on any of the above embodiments, in this embodiment, if Figure 6-Figure 8 As shown, a roughly funnel-shaped partition plate 3 is provided at the top of the sedimentation cylinder 1, and the partition plate 3 divides the internal cavity of the sedimentation cylinder 1 into a stirring chamber and a sedimentation chamber; a material guide pipe 301 is provided at intervals at the bottom of the stirring chamber around the circumferential direction of the sedimentation cylinder 1, and the material guide pipe 301 is inclined and extends to the inner wall of the sedimentation cylinder 1; a nozzle 4 connected to the mud and water inlet pipe 101 is provided at the top of the stirring chamber.

[0076] After the muddy water is introduced from the muddy water inlet pipe 101, it is sprayed around through the nozzle 4, and then converges to the center under the action of the baffle 208 to form a stirring effect, thereby improving the mixing uniformity of the muddy water and the flocculant, which is beneficial to accelerate the flocculation effect of impurities in the muddy water.

[0077] Then the muddy water is directly guided to the inner wall of the sedimentation cylinder 1 through the guide pipe 301. The deceleration effect of the inner wall of the sedimentation cylinder 1 is used to reduce the impact of the muddy water on the sedimentation chamber, avoid the settled sludge from being washed up again, and help accelerate the sedimentation of flocculants.

[0078] In this embodiment, the nozzle 4 includes a feed pipe 401, a rotating tube 402, and a spray pipe 403; both ends of the rotating tube 402 are closed, the feed pipe 401 is rotatably installed on the upper end of the rotating tube 402, and a connecting hole 4021 matching the position of the feed pipe 401 is provided on the rotating tube 402, and the internal cavity of the rotating tube 402 is connected with the internal cavity of the feed pipe 401 through the connecting hole 4021; the lower end of the feed pipe 401 is provided with a spray pipe 403 connected to the internal cavity of the rotating tube 402, and the free end of the spray pipe 403 extends in a horizontal direction perpendicular to the radial direction of the rotating tube 402.

[0079] When in use, the free end of the feed pipe 401 is connected to the mud and water inlet pipe 101, and the mud and water flow through the mud and water inlet pipe 101, the feed pipe 401, and the rotating pipe 402 in turn, and are finally sprayed out from the spray pipe 403. Since the free end of the spray pipe 403 extends in a horizontal direction perpendicular to the radial direction of the rotating pipe 402, when the mud and water are sprayed out from the spray pipe 403, a thrust is given to the spray pipe 403, thereby pushing the spray pipe 403 to rotate around the rotating pipe 402, thereby achieving the purpose of spraying the mud and water in all directions. The rotation of the spray pipe 403 does not require additional power, which effectively reduces the use cost of the device.

[0080] In this embodiment, the upper end of the rotating tube 402 is connected to the scraper motor 204, and the lower end of the rotating tube 402 is connected to the upper end of the scraper shaft 205, so that the rotational power of the rotating tube 402 is transmitted to the scraper shaft 205 to reduce the load of the scraper motor 204, which is beneficial to reducing the operating cost of the scraper motor 204. At the same time, when the introduced mud and water flow rate is small and cannot effectively drive the spraying pipe 403 to rotate, the scraper motor 204 can also directly drive the spraying pipe 403, so that the rotation of the two complements each other and ensures the stability of the operation of the device.

[0081] Furthermore, a reduction housing 404 is provided in the middle of the partition plate 3, and a coaxially arranged sun gear 405 and an outer gear ring 406 are rotatably installed in the reduction housing 404, a planetary gear 407 is provided between the sun gear 405 and the outer gear ring 406, and the planetary carrier of the planetary gear 407 is fixedly connected to the reduction housing 404; the lower end of the rotating tube 402 is connected to the sun gear 405, and the outer gear ring 406 is connected to the upper end of the scraper shaft 205. The sun gear 405, the outer gear ring 406, and the planetary gear 407 form a reduction mechanism, and the sun gear 405 is the input end and the outer gear ring 406 is the output end. Through the reduction mechanism, the output torque is increased, so that the thrust exerted on the spraying pipe 403 can drive the scraper shaft 205 to rotate, and at the same time, the rotation speed of the eccentric cam 206 is reduced to avoid the excessively fast rotation speed disturbing the mud and water in the sedimentation cylinder 1, so that the settled silt is washed up again. Specific embodiment five:

[0083] Based on any of the above embodiments, in this embodiment, if Figure 6 A net tube 5 coaxially arranged therewith is fixedly installed in the sedimentation tube 1. The net tube 5 reduces the disturbance of the muddy water in the net tube 5 caused by the muddy water guided downward through the guide pipe 301, which is conducive to accelerating the sedimentation of the muddy water in the net tube 5.

[0084] In this embodiment, a separation cylinder 6 coaxially arranged therewith is fixedly installed in the net cylinder 5. The bottom of the separation cylinder 6 is closed and eccentrically funnel-shaped. A mud discharge pipe 602 is arranged at the bottom to improve the discharge of sedimentation and sludge in the separation cylinder 6. A second through hole 601 is arranged at the bottom of the side of the separation cylinder 6. An overflow pipe 603 is arranged at the top of the separation cylinder 6. The overflow pipe 603 is used to discharge clean water. The arrangement of the separation cylinder 6 separates a relatively closed space in the separation cylinder 6, which effectively accelerates the sedimentation speed of the sludge. Moreover, in the separation cylinder 6, the water flow is in a downward flow posture, which makes it easier for the sludge in the separation cylinder 6 to settle.

[0085] In this embodiment, in order to improve the centrality of the scraper shaft 205, bearings are provided at staggered positions of the scraper shaft 205 and the separation cylinder 6.

[0086] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. HFST aerobic fluidized reactor equipped with a pulsating mud discharge system for water treatment. Features: Including sedimentation cylinder and pulsating sludge scraping mechanism; A mud and water inlet pipe is provided at the top of the sedimentation cylinder, and a mud and water outlet pipe is provided at the center of the bottom of the sedimentation cylinder; a pulsating mud scraping mechanism is provided at the inner bottom of the sedimentation cylinder; The pulsating mud scraping mechanism comprises a main connecting rod, a scraper, a push rod, a mud scraping motor and a mud scraping rotating shaft; The scraper shaft is rotatably installed in the sedimentation cylinder and is coaxially arranged with the sedimentation cylinder; an eccentric cam is arranged at the lower end of the scraper shaft, a guide groove is constructed on the side surface of the eccentric cam, and the upper end of the scraper shaft is connected to the output shaft of the scraper motor installed on the sedimentation cylinder; The main connecting rod is arranged above the inner bottom surface of the sedimentation cylinder, and is arranged parallel to the inner bottom surface of the sedimentation cylinder, and the projection of the main connecting rod on the horizontal plane extends along the radial direction of the sedimentation cylinder; a waist-shaped guide hole is provided on the main connecting rod, and a guide rod fixedly connected to the inner bottom surface of the sedimentation cylinder is provided in the waist-shaped guide hole; One end of the main connecting rod close to the eccentric cam is movably connected to the guide groove, and a limiting hole away from the eccentric cam is provided on the main connecting rod, and a baffle in the shape of "7" is provided on the side of the limiting hole close to the eccentric cam; the lower end of the push rod is hinged to the bottom surface of the sedimentation cylinder, and the upper end passes through the limiting hole; The scrapers extending toward the bottom surface of the sedimentation cylinder are arranged at intervals on the main connecting rod; The scraper motor drives the eccentric cam to rotate via the scraper shaft, and the end of the main connecting rod connected to the guide groove moves along the guide groove, and then the eccentric cam first causes the main connecting rod to move in a direction away from the eccentric cam, and at the same time lifts the end of the main connecting rod close to the eccentric cam, so that the scraper moves outward in a state where it does not contact the sludge deposited at the bottom of the sedimentation cylinder, and then the eccentric cam drives the main connecting rod to move in a direction close to the eccentric cam, and at the same time lowers the end of the main connecting rod close to the eccentric cam, so that the scraper moves inward in a state where it contacts the bottom surface of the sedimentation cylinder, and then scrapes the sludge deposited at the bottom of the sedimentation cylinder toward the bottom center of the sedimentation cylinder; During the outward movement of the main connecting rod, initially, the upper end of the push rod is inclined toward the side of the eccentric cam and abuts against the baffle plate. As the main connecting rod moves, the push rod gradually rotates toward the side away from the eccentric cam and pushes up the end of the main connecting rod away from the eccentric cam, so that the scraper does not contact the bottom surface of the sedimentation cylinder. When the main connecting rod moves inward, the upper end of the push rod does not contact the baffle, thereby preventing the main connecting rod from being lifted; The eccentric cam comprises a central connecting portion, an upper connecting portion, a lower connecting portion, and a cam connecting rod; The upper connecting part and the lower connecting part are both annular, and the two are stacked, and the guide groove is arranged between the upper connecting part and the lower connecting part; the upper connecting part and the lower connecting part are respectively fixedly connected to the central connecting part through the cam connecting rod; The main connecting rod is clamped with the guide groove; The scraper is hinged to the main connecting rod, and a limit block is provided on one side of the scraper close to the eccentric cam; A funnel-shaped partition plate is provided on the top of the sedimentation cylinder, and the partition plate divides the internal cavity of the sedimentation cylinder into a stirring cavity and a sedimentation cavity; The bottom of the stirring chamber is provided with material guide pipes at intervals around the circumference of the sedimentation cylinder, and the material guide pipes are arranged obliquely and extend to the inner side wall of the sedimentation cylinder; A nozzle connected to the muddy water inlet pipe is arranged on the top of the stirring chamber.

2. The water treatment system of the HFST aerobic fluidized reactor according to claim 1 is equipped with a pulsating mud discharge system, Features: The nozzle comprises a feed pipe, a rotating pipe and a spray pipe; The two ends of the rotating tube are closed, the feeding tube is rotatably mounted on the upper end of the rotating tube, a connecting hole matching the position of the feeding tube is provided on the rotating tube, and the internal cavity of the rotating tube is connected with the internal cavity of the feeding tube through the connecting hole; The lower end of the feed pipe is provided with the spray pipe which is in communication with the inner cavity of the rotating pipe, and the free end of the spray pipe extends in a horizontal direction perpendicular to the radial direction of the rotating pipe.

3. The water treatment system of the HFST aerobic fluidized reactor according to claim 2 is equipped with a pulsating mud discharge system, Features: The upper end of the rotating tube is connected to the mud scraping motor, and the lower end of the rotating tube is connected to the upper end of the mud scraping shaft.

4. The water treatment system of the HFST aerobic fluidized reactor according to claim 3 is equipped with a pulsating mud discharge system, Features: A reduction housing is provided in the middle of the partition plate, a sun gear and an outer gear ring are coaxially mounted and rotatably mounted in the reduction housing, and a planetary gear is provided between the sun gear and the outer gear ring; The lower end of the rotating tube is connected to the sun gear, and the outer gear ring is connected to the upper end of the mud scraping shaft.

5. The water treatment system of the HFST aerobic fluidized reactor according to claim 1 is equipped with a pulsating mud discharge system, Features: A net cylinder coaxially arranged therewith is fixedly installed in the sedimentation cylinder.

6. The water treatment system of the HFST aerobic fluidized reactor equipped with a pulsating mud discharge system according to claim 5, Features: A separation cylinder coaxially arranged therewith is fixedly installed in the net cylinder, the bottom of the separation cylinder is closed and provided with a mud discharge pipe; a second through hole is provided at the bottom of the side of the separation cylinder, and an overflow pipe is provided at the top of the side of the separation cylinder.

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