Sewage treatment equipment with mixed liquid reflux device

Abstract

The invention relates to the technical field of sewage treatment, and discloses sewage treatment equipment with a mixed liquid backflow device, the sewage treatment equipment comprises a power mechanism, the power mechanism further comprises a pool wall, the top of the pool wall is fixedly connected with a first supporting plate, and a first special-shaped gear is driven by a motor to rotate; when convex teeth on the first special-shaped gear are meshed with convex teeth on the second special-shaped gear, the first special-shaped gear and the second special-shaped gear rotate synchronously, and when the protruding position on the first special-shaped gear makes contact with the concave position on the first bevel gear, meshing connection of the first special-shaped gear and the second special-shaped gear is converted into sliding connection, and the second special-shaped gear stops rotating. When a protruding block on the first special-shaped gear is in contact with the correcting rod, the first special-shaped gear and the second special-shaped gear are driven again to be meshed, the second special-shaped gear rotates again, circulation is conducted in sequence, and a second bevel gear rotates intermittently, so that when the fan blades rotate, due to the effect of centrifugal force, the scraper scrapes outwards along the outer walls of the fan blades, and the fan blades are scraped outwards; and the surfaces of the fan blades are cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, in particular to sewage treatment equipment with a mixed liquid reflux device. Background Art

[0002] With the increasing requirements of the country for environmental protection, the sewage treatment rate in my country has been growing rapidly. At present, there are two main types of sewage in my country: centralized treatment and decentralized treatment. For example, newly built sewage treatment plants in towns and industrial parks belong to centralized treatment methods. Decentralized treatment mainly refers to on-site treatment of sewage. For example, hospital wastewater treatment stations, hotel sewage treatment systems and community sewage treatment systems all belong to decentralized treatment types. Centralized treatment requires the collection of all sewage, and a large amount of capital needs to be invested in pipeline construction. The construction period will also be extended accordingly. Decentralized treatment does not require the construction of too many pipelines, which can save a lot of costs in the construction period and construction investment. The distribution of residents in my country is mostly large mixed and small concentrated, which determines that the type of sewage treatment suitable for my country is centralized treatment as the main and decentralized treatment as the auxiliary.

[0003] In sewage treatment, the stirring device installed in the anoxic tank can promote the full contact between microorganisms and sewage, improve the degradation efficiency, and prevent the deposition of sludge at the bottom of the tank, which leads to a reduction in the effective volume of the tank. However, when the sewage in the anoxic tank is stirred, some sticky impurities will adhere to the fan blades, affecting the rotation of the fan blades and increasing the burden on the motor. The following solutions are proposed to address the above problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a sewage treatment equipment with a mixed liquid reflux device, including a power mechanism, the power mechanism also includes a pool wall, the top of the pool wall is fixedly connected to a support plate 1, the inner wall of the support plate 1 is rotatably connected to a reciprocating screw, and the bottom of the reciprocating screw is fixedly connected to a rotating pipe; The rotary stirring mechanism comprises a connecting block fixedly connected to the bottom of the rotating tube, a fan blade is fixedly connected to the outer wall of the connecting block, and a telescopic sleeve rod is fixedly connected to the inner wall of the connecting block; The collecting and cleaning mechanism comprises a collecting trough slidably connected to the outer wall of the rotating tube, a fixed support is fixedly connected to the outer wall of the collecting trough, and a connecting rod is fixedly connected to the outer wall of the fixed support.

[0005] Preferably, the power mechanism also includes a water inlet pipe fixedly connected to the inner wall of the pool wall, a water outlet pipe fixedly connected to the inner wall of the pool wall, a second support plate fixedly connected to the top of the pool wall, a water pump fixedly connected to the inner wall of the pool wall, a mixed liquor reflux pipe fixedly connected to the top of the water pump, and a blower fixedly connected to the top of the second support plate. The water inlet pipe is used to introduce sewage treated in the previous pool into the current pool, and the water outlet pipe is used to introduce the treated sewage into the next pool for the next treatment. The water pump and the mixed liquor reflux pipe are used to realize the reflux of the mixed liquor to improve the oxygen transfer efficiency and sludge activity, and can also convert nitrate nitrogen into nitrogen gas to denitrify the sewage.

[0006] Preferably, the power mechanism also includes an air duct fixedly connected to the outer wall of the blower, an aeration head is fixedly connected to the bottom of the air duct, the bottom of the aeration head is fixedly connected to the inner wall of the pool wall, and a motor bracket is fixedly connected to the top of the support plate. When the blower is running, wind force is introduced into the aeration head through the air duct, and the aeration head aerates the sewage in the pool, providing oxygen to the sewage, promoting microbial growth and metabolism, and then degrading organic matter and reducing nitrogen and phosphorus content.

[0007] Preferably, the power mechanism also includes a motor fixedly connected to the top of the motor bracket, a special-shaped gear 1 is fixedly connected to the outer wall of the motor, a protruding block is fixedly connected to the outer wall of the special-shaped gear 1, and a special-shaped gear 2 is meshingly connected to the outer wall of the special-shaped gear 1. The power supply is turned on to the motor to make the motor work normally, thereby driving the special-shaped gear 1 to rotate, and the meshing connection between the special-shaped gear 1 and the special-shaped gear 2 provides necessary power support for the orderly operation of the subsequent components.

[0008] Preferably, the power mechanism also includes a correction rod fixedly connected to the outer wall of the special-shaped gear second, the outer wall of the special-shaped gear second is fixedly connected with a bevel gear one, the outer wall of the bevel gear one is fixedly connected with a bevel gear two, the bottom of the bevel gear two is fixedly connected to the top of the reciprocating screw, and the centrifugal force generated by the fan blade when rotating allows the scraper to scrape outward, a telescopic sleeve rod is provided to connect the scraper and the connecting block, and the special-shaped gear one is driven by the motor to rotate, and the special-shaped gear one rotates continuously. When the convex teeth on the special-shaped gear one mesh with the convex teeth on the special-shaped gear two, the two rotate synchronously, and when the protruding part on the special-shaped gear one contacts the concave part on the bevel gear one, the special-shaped gear one and the special-shaped gear two are converted from a meshing connection to a sliding connection. At this time, the special-shaped gear one cannot drive the special-shaped gear two to rotate, and when the protruding block on the special-shaped gear one contacts the correction rod, the special-shaped gear one is driven to mesh with the special-shaped gear two again, and the special-shaped gear two rotates again, and the cycle is repeated in sequence, and the bevel gear two rotates intermittently.

[0009] Preferably, the rotary stirring mechanism also includes a return spring fixedly connected to the inner wall of the connecting block, the outer wall of the return spring is fixedly connected to the inner wall of the telescopic sleeve rod, the outer wall of the telescopic sleeve rod is fixedly connected with a scraper, the inner wall of the scraper is slidably connected to the outer wall of the fan blade, and utilizing the characteristic that when the scraper moves outward, the gas inside the telescopic sleeve rod is compressed and contracts, a partition is provided, and the top of the partition is filled with hydraulic oil, when the scraper moves outward, the air inside the telescopic sleeve rod is compressed and contracts, thereby driving the partition to move upward, allowing the hydraulic oil on the partition to flow upward into the interior of the telescopic sleeve rod through the groove, and when the scraper stops moving outward and is forced to move inward, the telescopic sleeve rod The internal hydraulic oil is squeezed and flows downward, returning to the top of the partition. The partition moves downward under the pulling force of the telescopic spring, thereby restoring the components to their original positions. Through the movement of the above components, the five scrapers can move outward synchronously and the distance of outward movement is equal, so that the center of gravity is always maintained in the center of the connecting block to avoid one scraper being blocked by a larger and stickier lump and unable to move outward, while other scrapers continue to move outward without obstruction. When the fan blades rotate, the center of gravity may shift, causing the reciprocating screw and the rotating tube to tilt, causing the convex teeth of the bevel gear one and the bevel gear two to rub against each other, thereby damaging them, and even affecting the operation of the motor in severe cases.

[0010] Preferably, the rotary stirring mechanism also includes a partition slidably connected to the inner wall of the connecting block, a telescopic spring is fixedly connected to the bottom of the partition, an end of the outer wall of the telescopic spring away from the telescopic sleeve is fixedly connected to the inner wall of the connecting block, and a notch is provided on the inner wall of the connecting block. By utilizing the above-mentioned characteristics, the five scrapers can move inward and outward synchronously. Since a certain fan blade may be attached to a larger and stickier agglomerate on its surface for some reason, when the fan blade rotates, the scraper on the fan blade may be blocked from continuing to move outward when moving outward alone due to insufficient centrifugal force, thereby failing to The surface is cleaned, but the other scrapers at this time are not affected by the larger and stickier lumps and will continue to move outward, driving the partition to move upward, and the hydraulic oil will flow upward under pressure, flowing into the interior of the telescopic sleeve behind the blocked scraper through the slot. Due to the action of other unblocked scrapers, the partition will continue to move upward, and the hydraulic oil will push the blocked scraper outward through the telescopic sleeve, causing it to generate a greater outward force, and then when a single centrifugal force is insufficient, a greater force can be generated through synchronous outward movement to remove those larger and stickier lumps.

[0011] Preferably, the collecting and cleaning mechanism also includes a movable protrusion rotatably connected to the outer wall of the connecting rod, the outer wall of the fixed pillar is slidably connected to the inner wall of the supporting plate, the outer wall of the rotating tube is fixedly connected with a filter screen, the inner wall of the rotating tube is rotatably connected with a collecting pipe, the outer wall of the collecting pipe is rotatably connected to the inner wall of the power mechanism, the outer wall of the collecting pipe is fixedly connected to the inner wall of the pool wall, when the fan blades rotate, the oil and other impurities floating on the water surface will be concentrated around the rotating tube, and a collecting trough is provided, when the reciprocating screw rotates, the movable protrusion rotates and slides upward along the groove on the reciprocating screw, and when it reaches the top, the movable protrusion will change from a state inclined to one side to a horizontal state, and then change to a state inclined to the other side through the groove on the reciprocating screw, and then rotate and slide downward along the groove on the reciprocating screw. In this way, the movable protrusion drives the collecting tank to move up and down through the connecting rod and the fixed support. When the oil and other impurities on the water surface are concentrated around the rotating tube due to the rotation of the fan blades, the collecting tank rises to collect the oil and other impurities and a small part of the sewage into the collecting tank. Since oil substances have hydrophobic groups, they will float on the water surface to form a thin film, and the density of impurities such as oil is lower than that of sewage. At this time, the sewage will be below the collecting tank, and impurities such as oil will float above the sewage. When the collecting tank rises, impurities such as oil will be higher than the filter, and then fall through the filter to the inner wall of the collection pipe, and then be discharged outward through the collection pipe to prevent oil and other impurities from entering the pool behind and affecting the normal operation of the pool behind. When the filter rotates, the impurities attached to its surface will be thrown out by centrifugal force to prevent the filter from being blocked.

[0012] The present invention has the following beneficial effects: (1) The present invention utilizes the centrifugal force generated by the rotation of the fan blade to cause the scraper to scrape outward, and sets a telescopic sleeve rod to connect the scraper and the connecting block. The motor drives the special-shaped gear 1 to rotate, and the special-shaped gear 1 rotates continuously. When the convex teeth on the special-shaped gear 1 mesh with the convex teeth on the special-shaped gear 2, the two rotate synchronously. When the protruding part on the special-shaped gear 1 contacts the concave part on the bevel gear 1, the special-shaped gear 1 and the special-shaped gear 2 are changed from meshing connection to sliding connection. At this time, the special-shaped gear 1 cannot drive the special-shaped gear 2 to rotate. Wheel 2 rotates, and when the protruding block on the special-shaped gear 1 contacts the correction rod, it drives the special-shaped gear 1 to mesh with the special-shaped gear 2 again. At this time, the special-shaped gear 2 rotates again, and the cycle is repeated. The bevel gear 2 rotates intermittently. Through the intermittent rotation of the bevel gear 2, when the fan blades rotate, the scraper scrapes outward along the outer wall of the fan blade due to the centrifugal force to clean the surface of the fan blade. When the fan blades stop rotating, the scraper is pulled by the reset spring in the telescopic sleeve and moves inward to reset.

[0013] (2) The present invention utilizes the characteristic that the gas inside the telescopic sleeve is compressed and contracts when the scraper moves outward, and sets a partition whose top is filled with hydraulic oil. When the scraper moves outward, the air inside the telescopic sleeve is compressed and contracts, thereby driving the partition to move upward, allowing the hydraulic oil on the partition to flow upward into the telescopic sleeve through the notch. When the scraper stops moving outward and is forced to move inward, the hydraulic oil inside the telescopic sleeve is squeezed and flows downward and returns to the top of the partition. The partition moves downward under the pulling force of the telescopic spring, thereby causing the Each component returns to its original position. Through the movement of the above components, the five scrapers can move outward synchronously and the distance of outward movement is equal, so that the center of gravity is always maintained in the center of the connecting block, to avoid a certain scraper being blocked by a larger and stickier lump and unable to move outward, while other scrapers continue to move outward without obstruction. When the fan blades rotate, the center of gravity may shift, causing the reciprocating screw and the rotating tube to tilt, causing the convex teeth of the bevel gear one and the bevel gear two to rub against each other, thereby damaging them, and even affecting the operation of the motor in severe cases.

[0014] (3) The present invention utilizes the above-mentioned characteristic that the five scrapers can move inward and outward synchronously. Since a certain fan blade may have larger and stickier lumps attached to its surface for some reason, when the fan blade rotates, the scraper on the fan blade may be blocked from continuing to move outward when moving outward alone due to insufficient centrifugal force, thereby failing to clean the surface of the fan blade. However, at this time, the other scrapers are not affected by the larger and stickier lumps and will continue to move outward, driving the partition to move upward. The hydraulic oil flows upward under pressure and flows into the interior of the telescopic sleeve behind the blocked scraper through the slot. Due to the action of the other unblocked scrapers, the partition will continue to move upward and cause the hydraulic oil to push the blocked scraper outward through the telescopic sleeve, causing it to generate a larger outward force. As a result, when a single centrifugal force is insufficient, a larger force can be generated through synchronous outward movement to remove those larger and stickier lumps.

[0015] (4) The present invention utilizes that when the fan blades rotate, other impurities such as oil floating on the water surface will be concentrated around the rotating tube, and a collecting tank is set. When the reciprocating screw rotates, the movable protrusion rotates and slides upward along the groove on the reciprocating screw. When it reaches the top, the movable protrusion changes from a state of being inclined to one side to a horizontal state, and then changes to a state of being inclined to the other side through the groove on the reciprocating screw, and then rotates and slides downward along the groove on the reciprocating screw. In this way, the movable protrusion drives the collecting tank to move up and down through the connecting rod and the fixed support. When the oil and other impurities on the water surface are concentrated around the rotating tube due to the rotation of the fan blades, the collecting tank is The collecting tank rises and collects impurities such as oil and a small part of sewage into the collecting tank. Since oil substances have hydrophobic groups, they will float on the water surface to form a thin film, and the density of impurities such as oil is lower than that of sewage. At this time, the sewage will be below the collecting tank, while impurities such as oil will float above the sewage. When the collecting tank rises, impurities such as oil will be higher than the filter, and then fall through the filter to the inner wall of the collection pipe, and then be discharged outward through the collection pipe to prevent impurities such as oil from entering the pool behind and affecting the normal operation of the pool behind. When the filter rotates, the impurities attached to its surface will be thrown out by centrifugal force to prevent the filter from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the internal components of the overall structure of the present invention; Figure 2 It is a schematic diagram of the power mechanism of the present invention; Figure 3 It is a schematic diagram of the internal components of the power mechanism of the present invention; Figure 4 For the present invention Figure 3 A is an enlarged schematic diagram; Figure 5 This is a schematic diagram of the internal components of the rotary stirring mechanism of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of B; Figure 7 A schematic diagram of the internal components of the cleaning mechanism is collected for the present invention; Figure 8 For the present invention Figure 7 A magnified schematic diagram of C in the middle.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1, power mechanism; 101, pool wall; 102, support plate 1; 103, reciprocating screw; 104, rotating pipe; 105, water inlet pipe; 106, water outlet pipe; 107, support plate 2; 108, water pump; 109, mixed liquid return pipe; 110, blower; 111, air duct; 112, aeration head; 113, motor bracket; 114, motor; 115, special-shaped gear 1; 116, protruding block; 117, special-shaped gear 2; 118 , correction rod; 119, bevel gear one; 120, bevel gear two; 2, rotating stirring mechanism; 201, connecting block; 202, fan blade; 203, telescopic sleeve rod; 204, reset spring; 205, scraper; 206, partition; 207, telescopic spring; 208, notch; 3, collecting and cleaning mechanism; 301, collecting tank; 302, fixed support; 303, connecting rod; 304, movable protrusion; 305, filter screen; 306, collecting pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] For example, see Figure 1 - Figure 4 The present invention is a sewage treatment equipment with a mixed liquid reflux device, comprising a power mechanism 1, the power mechanism 1 also comprises a pool wall 101, a support plate 102 is fixedly connected to the top of the pool wall 101, a reciprocating screw 103 is rotatably connected to the inner wall of the support plate 102, and a rotating tube 104 is fixedly connected to the bottom of the reciprocating screw 103; The rotating stirring mechanism 2 includes a connecting block 201 fixedly connected to the bottom of the rotating tube 104, a fan blade 202 is fixedly connected to the outer wall of the connecting block 201, and a telescopic sleeve rod 203 is fixedly connected to the inner wall of the connecting block 201; The collecting and cleaning mechanism 3 comprises a collecting tank 301 slidably connected to the outer wall of the rotating tube 104 , a fixed support 302 is fixedly connected to the outer wall of the collecting tank 301 , and a connecting rod 303 is fixedly connected to the outer wall of the fixed support 302 .

[0021] The power mechanism 1 also includes a water inlet pipe 105 fixedly connected to the inner wall of the pool wall 101, a water outlet pipe 106 fixedly connected to the inner wall of the pool wall 101, a support plate 107 fixedly connected to the top of the pool wall 101, a water pump 108 fixedly connected to the inner wall of the pool wall 101, a mixed liquid return pipe 109 fixedly connected to the top of the water pump 108, and a blower 110 fixedly connected to the top of the support plate 107. The water inlet pipe 105 is used to introduce the sewage treated by the previous pool into the current pool, and the water outlet pipe 106 is used to introduce the treated sewage into the next pool for the next treatment. The water pump 108 and the mixed liquid return pipe 109 are used to realize the reflux of the mixed liquid to improve the oxygen transfer efficiency and sludge activity, and can also convert nitrate nitrogen into nitrogen gas to achieve denitrification of sewage.

[0022] The power mechanism 1 also includes an air duct 111 fixedly connected to the outer wall of the blower 110, an aeration head 112 is fixedly connected to the bottom of the air duct 111, the bottom of the aeration head 112 is fixedly connected to the inner wall of the pool wall 101, and a motor bracket 113 is fixedly connected to the top of the support plate 102. When the blower 110 is running, wind is introduced into the aeration head 112 through the air duct 111, and the aeration head 112 aerates the sewage in the pool, provides oxygen to the sewage, promotes the growth and metabolism of microorganisms, and then degrades organic matter and reduces nitrogen and phosphorus content.

[0023] The power mechanism 1 also includes a motor 114 fixedly connected to the top of the motor bracket 113, a special-shaped gear 115 is fixedly connected to the outer wall of the motor 114, a protruding block 116 is fixedly connected to the outer wall of the special-shaped gear 115, and a special-shaped gear 2 117 is meshedly connected to the outer wall of the special-shaped gear 115. When the motor 114 is powered on, the motor 114 works normally, thereby driving the special-shaped gear 115 to rotate. Through the meshing connection between the special-shaped gear 115 and the special-shaped gear 2 117, necessary power support is provided for the orderly operation of the subsequent components.

[0024] The power mechanism 1 also includes a correction rod 118 fixedly connected to the outer wall of the special-shaped gear 117, a bevel gear 119 fixedly connected to the outer wall of the special-shaped gear 117, a bevel gear 120 fixedly connected to the outer wall of the bevel gear 119, and the bottom of the bevel gear 120 is fixedly connected to the top of the reciprocating screw 103. The centrifugal force generated by the fan blade 202 during rotation will cause the scraper 205 to scrape outwards. A telescopic sleeve rod 203 is provided to connect the scraper 205 and the connecting block 201, and the special-shaped gear 115 is driven to rotate by the motor 114. The special-shaped gear 115 continues to rotate. When the convex teeth on the special-shaped gear 115 mesh with the convex teeth on the special-shaped gear 117, the two rotate synchronously. When the protruding part on the special-shaped gear 115 contacts the concave part on the bevel gear 119, the special-shaped gear 115 and the special-shaped gear 117 are changed from meshing connection to sliding connection. At this time, the special-shaped gear 115 cannot drive the special-shaped gear 117 to rotate. When the protruding block 116 on the special-shaped gear 115 contacts the correction rod 118, the special-shaped gear 115 is driven to mesh with the special-shaped gear 117 again. At this time, the special-shaped gear 117 rotates again, and the cycle is repeated in sequence. The bevel gear 120 rotates intermittently.

[0025] For example 2, please refer to Figure 5 - Figure 8The present invention is a sewage treatment equipment with a mixed liquid reflux device. On the basis of the first embodiment, the rotating stirring mechanism 2 also includes a reset spring 204 fixedly connected to the inner wall of the connecting block 201, the outer wall of the reset spring 204 is fixedly connected to the inner wall of the telescopic sleeve 203, and the outer wall of the telescopic sleeve 203 is fixedly connected with a scraper 205, and the inner wall of the scraper 205 is slidably connected to the outer wall of the fan blade 202. When the scraper 205 moves outward, the gas inside the telescopic sleeve 203 is compressed and contracted. A partition 206 is provided, and its top is filled with hydraulic oil. When the scraper 205 moves outward, the air inside the telescopic sleeve 203 is compressed and contracted, thereby driving the partition 206 to move upward, allowing the hydraulic oil on the partition 206 to flow upward into the interior of the telescopic sleeve 203 through the notch 208, and when the scraper 205 moves outward, the air inside the telescopic sleeve 203 is compressed and contracted, thereby driving the partition 206 to move upward, and allowing the hydraulic oil on the partition 206 to flow upward into the telescopic sleeve 203 through the notch 208. When the blade stops moving outward and is forced to move inward, the hydraulic oil inside the telescopic sleeve 203 is squeezed and flows downward, returning to the top of the partition 206. The partition 206 moves downward under the pulling force of the telescopic spring 207, thereby restoring the components to their original positions. Through the movement of the above components, the five scrapers 205 can be moved outward synchronously and the distance of outward movement can be made equal, so that the center of gravity is always kept in the center of the connecting block 201, so as to avoid one scraper 205 being blocked by a larger and stickier lump and unable to move outward, while other scrapers 205 continue to move outward without being blocked. When the fan blade 202 rotates, the center of gravity may shift, causing the reciprocating screw 103 and the rotating tube 104 to tilt, causing the convex teeth of the bevel gear 119 and the bevel gear 2 120 to rub against each other, thereby being damaged, and even seriously affecting the operation of the motor.

[0026] The rotating stirring mechanism 2 also includes a partition 206 slidably connected to the inner wall of the connecting block 201, and a telescopic spring 207 is fixedly connected to the bottom of the partition 206. The end of the outer wall of the telescopic spring 207 away from the telescopic sleeve 203 is fixedly connected to the inner wall of the connecting block 201. A notch 208 is provided on the inner wall of the connecting block 201. By utilizing the above-mentioned characteristics, the five scrapers 205 can move inward and outward synchronously. Since a certain fan blade 202 may be attached to a larger and stickier agglomerate on its surface for some reason, when the fan blade 202 rotates, the scraper 205 on the fan blade 202 may be blocked and cannot continue to move outward when moving outward alone due to insufficient centrifugal force, thereby not The surface of the fan blade 202 can be cleaned, but at this time the other scrapers 205 are not affected by the larger and stickier lumps and will continue to move outward, driving the partition 206 to move upward, and the hydraulic oil will flow upward under pressure, flowing into the interior of the telescopic sleeve 203 behind the blocked scraper 205 through the slot 208. Due to the action of other unblocked scrapers 205, the partition 206 will continue to move upward, and the hydraulic oil will push the blocked scraper 205 outward through the telescopic sleeve 203, causing it to generate a greater outward force, and then when a single centrifugal force is insufficient, a greater force can be generated through synchronous outward movement to remove those larger and stickier lumps.

[0027] The collecting and cleaning mechanism 3 also includes a movable protrusion 304 rotatably connected to the outer wall of the connecting rod 303, the outer wall of the fixed support 302 is slidably connected to the inner wall of the support plate 102, the outer wall of the rotating tube 104 is fixedly connected with a filter screen 305, the inner wall of the rotating tube 104 is rotatably connected with a collecting pipe 306, the outer wall of the collecting pipe 306 is rotatably connected to the inner wall of the 290 power mechanism 1, and the outer wall of the collecting pipe 306 is fixedly connected to the inner wall of the pool wall 101, and the fan is used to When the blade 202 rotates, the oil and other impurities floating on the water surface will be collected around the rotating tube 104. A collecting tank 301 is set. When the reciprocating screw 103 rotates, the movable protrusion 304 rotates and slides upward along the groove on the reciprocating screw 103. When it reaches the top, the movable protrusion 304 changes from a state of tilting to one side to a horizontal state, and then changes to a state of tilting to the other side through the groove on the reciprocating screw 103, and then moves along the groove on the reciprocating screw 103 to the horizontal state. The movable protrusion 304 drives the collecting tank 301 to move up and down through the connecting rod 303 and the fixed support 302. When the impurities such as oil on the water surface are concentrated around the rotating tube 104 due to the rotation of the fan blade 202, the collecting tank 301 rises to collect the impurities such as oil and a small part of sewage into the collecting tank 301. Since the oil substance has a hydrophobic group, it will float on the water surface to form a thin film, and the density of impurities such as oil is less than that of sewage. At this time, the sewage will be below the collecting tank 301, and the impurities such as oil will float above the sewage. When the collecting tank 301 rises, the impurities such as oil will be higher than the filter screen 305, and then fall down through the filter screen 305 to the inner wall of the collecting pipe 306, and then be discharged outward through the collecting pipe 306 to prevent the impurities such as oil from entering the pool behind and affecting the normal operation of the pool behind. When the filter screen 305 rotates, the impurities adhering to its surface will be thrown outward by centrifugal force to prevent the filter screen 305 from being blocked.

[0028] A specific application of this embodiment is: when using the device, the device is installed at a desired position, and the power supply of the motor 114 is turned on, a telescopic sleeve rod 203 is set to connect the scraper 205 and the connecting block 201, and the motor 114 drives the special-shaped gear 1 115 to rotate, and the special-shaped gear 1 115 rotates continuously. When the convex teeth on the special-shaped gear 1 115 are meshed with the convex teeth on the special-shaped gear 2 117, the two rotate synchronously. When the protruding part of the special-shaped gear 1 115 contacts the concave part of the bevel gear 1 119, the special-shaped gear 1 115 and the special-shaped gear 2 117 are changed from meshing connection to sliding connection. At this time, the special-shaped gear 1 115 cannot drive the special-shaped gear The second gear 117 rotates, and when the protruding block 116 on the special-shaped gear 115 contacts the correction rod 118, the special-shaped gear 115 is driven to mesh with the special-shaped gear 2 117 again. At this time, the special-shaped gear 2 117 rotates again, and the cycle is repeated in sequence. The bevel gear 2 120 rotates intermittently. Through the intermittent rotation of the bevel gear 2 120, when the fan blade 202 rotates, due to the centrifugal force, the scraper 205 scrapes outward along the outer wall of the fan blade 202 to clean the surface of the fan blade 202. When the fan blade 202 stops rotating, the scraper 205 is pulled by the reset spring 204 in the telescopic sleeve 203 and moves inward to reset.

[0029] Taking advantage of the fact that the gas inside the telescopic rod 203 is compressed and contracts when the scraper 205 moves outward, a partition 206 is provided, and the top of the partition 206 is filled with hydraulic oil. When the scraper 205 moves outward, the air inside the telescopic rod 203 is compressed and contracts, thereby driving the partition 206 to move upward, allowing the hydraulic oil on the partition 206 to flow upward into the telescopic rod 203 through the notch 208. When the scraper stops moving outward and is forced to move inward, the hydraulic oil inside the telescopic rod 203 is squeezed and flows downward and returns to the top of the partition 206. The partition plate 206 moves downward under the pulling force of the telescopic spring 207, thereby restoring each component to its original position. Through the movement of the above components, the five scrapers 205 can be synchronously moved outward, and the distance of outward movement is equal, so that the center of gravity is always kept at the center of the connecting block 201, so as to avoid that one scraper 205 is blocked by a larger and stickier agglomerate and cannot move outward, but other scrapers 205 continue to move outward without being blocked. When the fan blade 202 rotates, the center of gravity may shift, thereby causing the reciprocating screw 103 and the rotating tube 104 to tilt. The convex teeth of the bevel gear 119 and the bevel gear 2 120 are rubbed against each other, and then damaged, which may even affect the operation of the motor. Because a certain blade 202 may be attached to the surface of a larger and stickier agglomerate for some reason, when the blade 202 rotates, the scraper 205 on the blade 202 may be blocked and cannot continue to move outward when moving outward alone due to insufficient centrifugal force, thereby failing to clean the surface of the blade 202. However, at this time, the other scrapers 205 are not affected by the larger and stickier agglomerates and will continue to move outward. The hydraulic oil is pressed to flow upward, and flows into the telescopic sleeve 203 behind the blocked scraper 205 through the notch 208. Due to the action of other unblocked scrapers 205, the partition 206 will continue to move upward, and the hydraulic oil will push the blocked scraper 205 to move outward through the telescopic sleeve 203, so that it generates a greater outward force. Therefore, when a single centrifugal force is insufficient, a greater force can be generated through synchronous outward movement to remove larger and stickier lumps.

[0030] When the fan blades 202 rotate, other impurities such as oil floating on the water surface will be concentrated around the rotating tube 104, and a collecting tank 301 is set. When the reciprocating screw 103 rotates, the movable protrusion 304 rotates and slides upward along the groove on the reciprocating screw 103. When reaching the top, the movable protrusion 304 changes from a state of tilting to one side to a horizontal state, and then changes to a state of tilting to the other side through the groove on the reciprocating screw 103, and then rotates and slides downward along the groove on the reciprocating screw 103, and so on. The movable protrusion 304 drives the collecting tank 301 to move up and down through the connecting rod 303 and the fixed support 302, and the oil and other impurities on the water surface are concentrated around the rotating tube 104 due to the rotation of the fan blades 202. When the collecting tank 301 is surrounded, the collecting tank 301 rises, and impurities such as oil and a small part of sewage are collected into the collecting tank 301. Since oil substances have hydrophobic groups, they will float on the water surface to form a thin film, and the density of impurities such as oil is lower than that of sewage. At this time, the sewage will be below the collecting tank 301, and impurities such as oil will float above the sewage. When the collecting tank 301 rises, impurities such as oil will be higher than the filter screen 305, and then fall down through the filter screen 305 to the inner wall of the collecting pipe 306, and then be discharged outward through the collecting pipe 306 to prevent impurities such as oil from entering the pool behind and affecting the normal operation of the pool behind. When the filter screen 305 rotates, the impurities adhered to its surface will be thrown outward by centrifugal force to prevent the filter screen 305 from being blocked.

[0031] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sewage treatment device with a mixed liquid reflux device, comprising a power mechanism (1), the power mechanism (1) further comprising a pool wall (101), the top of the pool wall (101) being fixedly connected to a support plate 1 (102), the inner wall of the support plate 1 (102) being rotatably connected to a reciprocating screw (103), the bottom of the reciprocating screw (103) being fixedly connected to a rotating tube (104), characterized in that: Also includes: A rotary stirring mechanism (2), the rotary stirring mechanism (2) comprising a connection block (201) fixedly connected to the bottom of the rotating tube (104), a fan blade (202) fixedly connected to the outer wall of the connection block (201), and a telescopic sleeve rod (203) fixedly connected to the inner wall of the connection block (201); A collecting and cleaning mechanism (3), the collecting and cleaning mechanism (3) comprising a collecting trough (301) slidably connected to the outer wall of the rotating tube (104), a fixed support (302) fixedly connected to the outer wall of the collecting trough (301), and a connecting rod (303) fixedly connected to the outer wall of the fixed support (302).

2. The sewage treatment equipment with a mixed liquid reflux device according to claim 1 is characterized in that: The power mechanism (1) further comprises a water inlet pipe (105) fixedly connected to the inner wall of the pool wall (101); a water outlet pipe (106) fixedly connected to the inner wall of the pool wall (101); a second support plate (107) fixedly connected to the top of the pool wall (101); a water pump (108) fixedly connected to the inner wall of the pool wall (101); a mixed liquid return pipe (109) fixedly connected to the top of the water pump (108); and a blower (110) fixedly connected to the top of the second support plate (107).

3. The sewage treatment equipment with a mixed liquid reflux device according to claim 2 is characterized in that: The power mechanism (1) further comprises an air duct (111) fixedly connected to the outer wall of the blower (110); an aeration head (112) is fixedly connected to the bottom of the air duct (111); the bottom of the aeration head (112) is fixedly connected to the inner wall of the pool wall (101); and a motor bracket (113) is fixedly connected to the top of the support plate 1 (102).

4. The sewage treatment equipment with a mixed liquid reflux device according to claim 3 is characterized by: The power mechanism (1) further comprises a motor (114) fixedly connected to the top of the motor bracket (113); a first shaped gear (115) is fixedly connected to the outer wall of the motor (114); a protruding block (116) is fixedly connected to the outer wall of the first shaped gear (115); and a second shaped gear (117) is meshingly connected to the outer wall of the first shaped gear (115).

5. The sewage treatment equipment with a mixed liquid reflux device according to claim 4 is characterized in that: The power mechanism (1) also includes a correction rod (118) fixedly connected to the outer wall of the special-shaped gear 2 (117), the outer wall of the special-shaped gear 2 (117) is fixedly connected to the bevel gear 1 (119), the outer wall of the bevel gear 1 (119) is fixedly connected to the bevel gear 2 (120), and the bottom of the bevel gear 2 (120) is fixedly connected to the top of the reciprocating screw (103).

6. The sewage treatment equipment with a mixed liquid reflux device according to claim 5, characterized in that: The rotary stirring mechanism (2) further comprises a return spring (204) fixedly connected to the inner wall of the connection block (201); the outer wall of the return spring (204) is fixedly connected to the inner wall of the telescopic sleeve (203); the outer wall of the telescopic sleeve (203) is fixedly connected to a scraper (205); the inner wall of the scraper (205) is slidably connected to the outer wall of the fan blade (202).

7. The sewage treatment equipment with a mixed liquid reflux device according to claim 6, characterized in that: The rotary stirring mechanism (2) further comprises a partition (206) slidably connected to the inner wall of the connecting block (201); a telescopic spring (207) is fixedly connected to the bottom of the partition (206); an end of the outer wall of the telescopic spring (207) away from the telescopic sleeve rod (203) is fixedly connected to the inner wall of the connecting block (201); and a notch (208) is provided on the inner wall of the connecting block (201).

8. The sewage treatment equipment with a mixed liquid reflux device according to claim 7, characterized in that: The collecting and cleaning mechanism (3) further comprises a movable protrusion (304) rotatably connected to the outer wall of the connecting rod (303); the outer wall of the fixed support (302) is slidably connected to the inner wall of the support plate (102); a filter screen (305) is fixedly connected to the outer wall of the rotating tube (104); a collecting pipe (306) is rotatably connected to the inner wall of the rotating tube (104); the outer wall of the collecting pipe (306) is rotatably connected to the inner wall of the 290 power mechanism (1); and the outer wall of the collecting pipe (306) is fixedly connected to the inner wall of the pool wall (101).

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