A municipal drainage pre-treatment device

Abstract

The application belongs to the technical field of sewage treatment, and particularly relates to a municipal drainage pretreatment equipment, which comprises an initial sedimentation tank, a water inlet is arranged on the left side end face of the initial sedimentation tank, a water outlet is arranged on the right side end face of the initial sedimentation tank, a collecting bin is fixedly installed above the water outlet, a separation mechanism is arranged on the left side of the water outlet, the separation mechanism comprises a belt filter screen, the belt filter screen rotates on two rotating rollers, the rotating roller located at the bottom rotates in the initial sedimentation tank, the rotating roller located at the top is provided with mounting plates on both sides, the mounting plates are mounted on the initial sedimentation tank, and the rotating roller located at the top rotates on the two mounting plates, the belt filter screen is fixedly connected with uniformly arranged baffle plates, the baffle plates are provided with uniformly arranged first leakage holes, a water control mechanism is arranged between the two mounting plates, and an isolation mechanism is arranged above the rotating roller located at the bottom.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a municipal drainage pretreatment device. Background Technology

[0002] With the acceleration of urbanization, municipal sewage not only contains domestic sewage, but also industrial wastewater and stormwater runoff. Domestic sewage contains a large amount of organic matter and suspended solids; industrial wastewater may contain heavy metals, toxic and harmful substances, and persistent organic pollutants; stormwater runoff carries garbage, silt, oil, and other contaminants from the ground.

[0003] Wastewater and rainwater contain a large number of harmful substances. If discharged directly into water bodies or onto the ground without treatment, they will cause great harm to the environment and human health. Therefore, it is essential to pre-treat wastewater or rainwater before discharge to avoid this situation.

[0004] Wastewater pretreatment not only purifies wastewater or rainwater but also reduces the burden on the treatment process and improves the efficiency and quality of subsequent treatment. Furthermore, wastewater pretreatment is a necessary measure to protect the environment and human health.

[0005] Wastewater pretreatment is a purification method primarily used for preparatory work before the discharge of wastewater and rainwater. The purpose of wastewater pretreatment is to remove or reduce impurities and pollutants in wastewater or rainwater to a certain level, thereby reducing the burden on subsequent treatment processes and improving treatment efficiency and quality. Wastewater pretreatment typically includes steps such as separation, coagulation, and sedimentation.

[0006] When separating wastewater, filters are mainly used to intercept larger suspended solids, such as plastic bags, paper, branches and other large debris. If large suspended solids are not removed in time, they will damage the subsequent wastewater treatment equipment.

[0007] When filtering suspended waste through a filter screen, as the amount of wastewater increases, the waste in the wastewater accumulates on the filter screen, causing it to become clogged. Existing technologies can remove the clogged waste from the filter screen to prevent clogging. However, when the waste is discharged, it carries a large amount of water, such as water residue in garbage bags. When this water-containing waste is carried out, harmful substances in the water are also carried out, which can harm the external environment and prolong the drying time of the waste. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies and solve the above-mentioned technical problems, this invention proposes a municipal drainage pretreatment device. By setting up a primary sedimentation tank, water can be squeezed out of the garbage, thereby reducing the amount of water in the garbage. The specific structure is as follows:

[0009] A municipal drainage pretreatment device includes a primary sedimentation tank; an inlet is provided on the left end face of the primary sedimentation tank; and an outlet is provided on the right end face of the primary sedimentation tank.

[0010] A collection chamber is fixedly installed above the water outlet; a separation mechanism is provided on the left side of the water outlet; the separation mechanism includes a belt filter screen; the belt filter screen rotates on two rotating rollers;

[0011] The bottom roller rotates within the primary sedimentation tank; the top roller has mounting plates on both sides, which are mounted on the primary sedimentation tank, and the top roller rotates on the two mounting plates.

[0012] The belt filter screen is fixedly connected to a uniformly arranged baffle plate, and the baffle plate is provided with a uniformly arranged first leakage hole.

[0013] A water control mechanism is provided between the two mounting plates, and the water control mechanism is used to control the amount of garbage in the water;

[0014] The roller at the bottom has an inclined plate on its left side, and the inclined plate has an arc surface on the side near the belt filter screen. The rotating baffle will pass through the arc surface.

[0015] A baffle is rotatably mounted on the side of the inclined plate near the rotating roller via a torsion spring, and the other side of the baffle is in contact with the belt filter screen.

[0016] An isolation mechanism is provided above the bottom roller, and the isolation mechanism is used to isolate floating garbage on the water.

[0017] Preferably, the water control mechanism includes a squeezing roller; the squeezing roller rotates between two mounting plates;

[0018] A first motor is fixedly mounted on one of the mounting plates, and the first motor is used to drive the extrusion roller to rotate counterclockwise;

[0019] The outer ring surface of the extrusion roller is provided with evenly arranged deep grooves, which engage with the baffles on the belt filter screen; the openings of the deep grooves are all provided with rounded corners.

[0020] In the initial state, one of the baffles extends into one of the deep grooves. When the extrusion roller rotates, the deep grooves on the extrusion roller will engage with the baffles in turn.

[0021] Below the extrusion rollers, inside the belt filter screen, there is a support plate, and the support plate is parallel to the belt filter screen; the two sides of the support plate are mounted on the mounting plate.

[0022] Preferably, the support plate has sliding grooves on both sides of the two mounting plates, and the sliding grooves are perpendicular to the belt filter screen.

[0023] The support plate is fixedly equipped with sliders on both end faces near the slide groove, and the sliders slide within the slide groove.

[0024] Both sliders are fixedly connected to springs below, and the other side of the springs is connected to the bottom of the groove; the support plate is initially attached to the belt filter above.

[0025] Preferably, the support plate comprises a base plate and a plurality of elongated blocks;

[0026] The slider is fixedly connected to the base plate; a slide rail is provided on the top end face of the base plate; long blocks are slidably connected in the slide rail, and adjacent long blocks are in close contact with each other;

[0027] Each of the elongated blocks is fixedly connected to a spring at its bottom, and the other side of the spring is connected to the bottom of the slide; the bottom of the base plate has a through hole for water leakage.

[0028] Preferably, a top plate is slidably connected within the deep groove of each of the extrusion rollers;

[0029] Each of the top plates is fixedly connected to a spring, and the other side of each spring is connected to the bottom of the deep groove. In the initial state, the top plate is located at the opening of the deep groove.

[0030] Preferably, the belt filter screen has inclined grooves on the side walls on both sides of the primary sedimentation tank on the left side, and the inclined grooves are parallel to the belt filter screen.

[0031] The isolation mechanism includes a floating roller; a rotating rod is fixedly connected to the floating roller, and the rotating rod is located in two inclined grooves;

[0032] The outer ring surface of the floating roller is fixedly connected with evenly arranged rotating plates.

[0033] Preferably, a sliding plate is slidably connected to each of the two inclined troughs, and the sliding plate partially extends out of the inclined trough in the initial state and extends above the primary sedimentation tank;

[0034] The two sides of the rotating rod rotate within the opposing sliding plates respectively; a second motor is fixedly installed on the side of the sliding plate extending above the primary sedimentation tank, and a pulley is installed on the rotating shaft of the second motor;

[0035] The pulley and the roller are connected to a drive belt that rotates together. When the second motor rotates, it will drive the rotating rod to rotate through the drive belt.

[0036] Preferably, each of the rotating plates has a uniformly arranged second drain hole.

[0037] The beneficial effects of this invention are as follows:

[0038] 1. The municipal drainage pretreatment equipment of the present invention, by setting a circulating rotating belt filter, can discharge the garbage blocked at the belt filter, thereby avoiding the garbage from clogging the belt filter. At the same time, by setting a water control mechanism, water can be squeezed out of the garbage, thereby reducing the water content in the garbage. This prevents the garbage with excessive water content from being carried into the external environment, which would cause harm to the external environment due to the presence of harmful substances in the sewage. The reduction in the moisture content of the garbage also reduces the drying time of the garbage.

[0039] 2. In the municipal drainage pretreatment equipment of the present invention, when the thickness of garbage at different positions on the same side of the baffle plate of the belt filter is different, when the squeezing roller squeezes the garbage, the long block under the thicker garbage slides a greater distance downward, and the long block under the thinner garbage slides a smaller distance downward. At this time, the downward movement distance of the long block is determined by the thickness of the garbage. In this process, when squeezing garbage of different thicknesses on the same side of the baffle plate, the squeezing roller can squeeze garbage of different thicknesses evenly, thereby avoiding some garbage being too thick, which would prevent the thinner garbage from being completely squeezed when the squeezing roller squeezes the garbage, resulting in some water not being squeezed out. By setting multiple long blocks that slide downward, the garbage being squeezed can be made to fit with the long blocks below, thereby improving the dehydration effect of the garbage.

[0040] 3. The municipal drainage pretreatment equipment of the present invention, by setting floating rollers, can automatically adjust its position according to the height of the liquid level, and at the same time block garbage. Each time the rotating plate rotates, it can carry away a part of the garbage, so that the garbage can be transferred to the belt filter screen in batches. Then, the garbage is squeezed by the squeezing rollers in batches, thus avoiding the floating garbage from all floating to the belt filter screen at once, thereby avoiding too much garbage being directly carried away by the belt filter screen, making the garbage on the belt filter screen too thick, resulting in incomplete squeezing by the squeezing rollers, and thus preventing the water in some garbage from being discharged. Attached Figure Description

[0041] The invention will now be further described with reference to the accompanying drawings.

[0042] Figure 1 This is a structural diagram of the primary sedimentation tank of the present invention;

[0043] Figure 2 This is a diagram of the internal structure of the primary sedimentation tank of this invention;

[0044] Figure 3 This is an exploded view of the separation mechanism, water control mechanism, and isolation mechanism in this invention;

[0045] Figure 4 This is the present invention. Figure 3 Enlarged view of a portion of point A in the middle;

[0046] Figure 5 This is a structural diagram of the support plate in this invention;

[0047] Figure 6 This is a top view of the primary sedimentation tank of the present invention;

[0048] Figure 7 This is the present invention. Figure 6 Sectional view at point BB;

[0049] Figure 8 This is the present invention. Figure 7 Enlarged view of a section at point C;

[0050] Figure 9 This is the present invention. Figure 7 Enlarged view of a section at point D.

[0051] In the diagram: 1. Primary sedimentation tank; 11. Inlet; 12. Outlet; 13. Collection chamber; 14. Inclined plate; 15. Baffle; 2. Belt filter; 21. Rotating roller; 22. Mounting plate; 23. Baffle plate; 24. First leakage hole; 3. Squeezing roller; 31. First motor; 32. Deep trough; 33. Top plate; 4. Support plate; 41. Slide chute; 42. Sliding block; 43. Bottom plate; 44. Long block; 45. Slide track; 5. Inclined trough; 51. Floating roller; 52. Rotating rod; 53. Rotating plate; 54. Slide plate; 55. Second motor; 56. Drive belt; 57. Second leakage hole. Detailed Implementation

[0052] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0053] Example 1: As Figures 1 to 9 As shown, the municipal drainage pretreatment equipment of the present invention includes a primary sedimentation tank 1; an inlet 11 is provided on the left end face of the primary sedimentation tank 1; and an outlet 12 is provided on the right end face of the primary sedimentation tank 1.

[0054] A collection chamber 13 is fixedly installed above the outlet 12; a separation mechanism is provided on the left side of the outlet 12; the separation mechanism includes a belt filter screen 2; the belt filter screen 2 rotates on two rotating rollers 21;

[0055] The rotating roller 21 located at the bottom rotates within the primary sedimentation tank 1; the rotating roller 21 located at the top has mounting plates 22 on both sides, and the mounting plates 22 are mounted on the primary sedimentation tank 1, and the rotating roller 21 at the top rotates on the two mounting plates 22.

[0056] The belt filter 2 is fixedly connected to a uniformly arranged baffle plate 23, and the baffle plate 23 is provided with a uniformly arranged first leakage hole 24.

[0057] A water control mechanism is provided between the two mounting plates 22, and the water control mechanism is used to control the water flow of garbage in the water;

[0058] The left side of the bottom roller 21 is provided with an inclined plate 14, and the inclined plate 14 has an arc surface on the side near the belt filter screen 2. The rotating baffle 23 will pass through the arc surface.

[0059] A baffle 15 is rotatably mounted on the side of the inclined plate 14 near the rotating roller 21 via a torsion spring, and the other side of the baffle 15 is in contact with the belt filter 2.

[0060] An isolation mechanism is provided above the bottom roller 21, and the isolation mechanism is used to isolate floating garbage on the water;

[0061] In this embodiment, the water control mechanism includes a squeezing roller 3; the squeezing roller 3 rotates between two mounting plates 22;

[0062] One of the mounting plates 22 is fixedly mounted with a first motor 31, and the first motor 31 is used to drive the extrusion roller 3 to rotate counterclockwise;

[0063] The outer ring surface of the extrusion roller 3 is provided with evenly arranged deep grooves 32, and the deep grooves 32 engage with the baffles 23 on the belt filter screen 2; the openings of the deep grooves 32 are all provided with rounded corners;

[0064] In the initial state, one of the baffles 23 extends into one of the deep grooves 32. When the extrusion roller 3 rotates, the deep grooves 32 on the extrusion roller 3 will engage with the baffles 23 in sequence.

[0065] Below the extrusion roller 3, inside the belt filter screen 2, there is a support plate 4, and the support plate 4 is parallel to the belt filter screen 2; the two sides of the support plate 4 are mounted on the mounting plate 22.

[0066] Specifically, during wastewater pretreatment, the water control mechanism is first activated, and then the wastewater is discharged into the primary sedimentation tank 1 from the inlet 11. Once in the primary sedimentation tank 1, the wastewater carries floating debris towards the outlet 12. When the water control mechanism is activated, the first motor 31 drives the squeezing roller 3 to rotate slowly and uniformly counterclockwise. Because the baffles 23 on the belt filter 2 engage, the squeezing roller 3 sequentially engages with the baffles 23 on the belt filter 2 during its counterclockwise rotation, thereby driving the belt filter... 2. The belt filter 2 rotates clockwise along the two rotating rollers 21. During the clockwise rotation of the belt filter 2, multiple baffles 23 will rotate clockwise. When the baffle 23 passes the arc surface on the inclined plate 14, the baffle 23 will rotate along the inclined surface. When the baffle 23 contacts the baffle 15, it will push the baffle 15 to rotate. After the baffle 23 passes the baffle 15, the baffle 15 will return to its initial state. During this process, some garbage can be prevented from flowing through the distance between the belt filter 2 and the inclined plate 14, thus preventing the garbage from being discharged.

[0067] More specifically, when suspended debris floats to the position of the belt filter 2, it will come into contact with the belt filter 2. As the baffle 23 rotates, it can carry the debris upward and gradually remove it from the water surface. When the baffle 23 moves the debris to the surface, the baffle 23 and some of the water carried by the debris will flow down through the first hole 24 on the baffle 23, thereby reducing the amount of water carried by the debris. Since the belt filter 2 rotates slowly, more water can flow down from the debris that has moved to the surface, further reducing the amount of water carried by the debris. Since the belt filter 2 carries the debris out in a cycle, it can prevent the debris from accumulating at the position of the belt filter 2 and gradually increasing, thus preventing the accumulated debris from clogging the belt filter 2.

[0068] Furthermore, when the baffle 23 moves the garbage to below the squeezing roller 3, the garbage driven by the baffle 23 is located above the support plate 4. Subsequently, the squeezing roller 3 will gradually come into contact with the garbage on the belt filter 2. During the contact process, the garbage on the belt filter 2 will be squeezed. When the garbage is squeezed, the water carried in the garbage will be squeezed out. For example, the water remaining in the plastic bag and the water absorbed by some water-absorbing garbage can be squeezed out by the squeezing roller 3 when it passes through the squeezing roller 3, thereby reducing the amount of water in the garbage. The squeezed water will flow down through the first drain hole 24 and along the support plate 4. When the garbage passes through the squeezing roller 3 and the belt filter 2 drives the garbage to rotate to the top position, the garbage will fall into the collection box. Then the belt filter 2 will continue to rotate.

[0069] Furthermore, by setting up a circulating belt filter 2, the garbage that is blocked in the belt filter 2 can be discharged, thereby preventing the garbage from clogging the belt filter 2. At the same time, by setting up a water control mechanism, water can be squeezed out of the garbage, thereby reducing the amount of water in the garbage. This prevents the garbage with excessive water content from being carried into the external environment, which could cause harm to the external environment due to the presence of harmful substances in the sewage. The reduction in the moisture content of the garbage also reduces the drying time of the garbage.

[0070] Example 2: The support plate 4 has sliding grooves 41 on both sides of the two mounting plates 22, and the sliding grooves 41 are perpendicular to the belt filter screen 2.

[0071] Slider 42 is fixedly installed on both end faces of the support plate 4 near the slide groove 41, and the slider 42 slides in the slide groove 41.

[0072] Both sliders 42 are fixedly connected to springs below, and the other side of the springs is connected to the bottom of the groove 41; the support plate 4 is initially attached to the belt filter 2 above;

[0073] In this embodiment, the support plate 4 comprises a base plate 43 and a plurality of elongated blocks 44;

[0074] The slider 42 is fixedly connected to the base plate 43; a slide rail 45 is provided on the top end face of the base plate 43; a uniformly arranged long block 44 is slidably connected in the slide rail 45, and adjacent long blocks 44 are in contact with each other.

[0075] Each of the elongated blocks 44 is fixedly connected to a spring at its bottom, and the other side of the spring is connected to the bottom of the slide 45; the bottom of the base plate 43 is provided with a through hole for water leakage.

[0076] In this embodiment, a top plate 33 is slidably connected within the deep groove 32 of each of the extrusion rollers 3;

[0077] Each of the top plates 33 is fixedly connected to a spring, and the other side of each spring is connected to the bottom of the deep groove 32. In the initial state, the top plate 33 is located at the opening of the deep groove 32.

[0078] Specifically, since the sliders 42 fixedly connected to both sides of the support plate 4 slide in the grooves 41 on the mounting plate 22 through springs, when the squeezing roller 3 squeezes the garbage above the support plate 4, the garbage above the support plate 4 is squeezed. When the garbage above the support plate 4 is squeezed to the limit position, since the squeezed garbage has a certain thickness, the garbage squeezed by the squeezing roller 3 will squeeze the belt filter screen 2 and the support plate 4, thus pushing the belt filter screen 2 and the support plate 4 to move down. When the support plate 4 moves down, the support plate 4 will drive the sliders 42 to slide down in the grooves 41. At the same time, the sliders 42 will squeeze the springs. In this process, it can be avoided that when the garbage is squeezed, the garbage still has a certain thickness, which will squeeze the support plate 4 and the squeezing roller 3 in the opposite direction, thus causing the squeezing roller 3 or the support plate 4 to be squeezed and damaged.

[0079] More specifically, since the support plate 4 is composed of a base plate 43 and multiple long blocks 44, and the long blocks 44 slide within the base plate 43 via springs, when the garbage moves onto the support plate 4, it is located above the multiple long blocks. When the squeeze roller 3 squeezes the garbage, since the squeezed garbage still has a certain thickness, this thickness of garbage will press downwards onto the long blocks 44. After the long blocks 44 are pressed downwards, they will move down into the slide 45 and compress the springs at the bottom of the long blocks 44, thus preventing the garbage from retaining a certain thickness after being squeezed, which would then reverse and squeeze the support plate 4 and the squeeze roller 3. At the same time, since the long blocks 44 are evenly arranged on the base plate 43, when the thickness of the garbage at different positions on the same side of the baffle 23 on the belt filter 2 is different, when the squeeze roller 3 squeezes the garbage... The longer block 44 under thicker waste slides down a greater distance, while the longer block 44 under thinner waste slides down a smaller distance. The distance the longer block 44 moves down is determined by the thickness of the waste. During this process, when squeezing waste of different thicknesses on the same side of the baffle 23, the squeezing roller 3 can squeeze the waste of different thicknesses evenly, thus avoiding the situation where some waste is too thick and the thinner waste cannot be completely squeezed when the squeezing roller 3 squeezes the waste, resulting in some water not being squeezed out. By setting multiple longer blocks 44 that slide down, the squeezed waste can be made to fit with the longer block 44 below, thereby improving the dehydration effect of the waste. Since the bottom plate 43 has through holes, if some water enters the slide 45, it will flow out through the through holes.

[0080] Furthermore, since the top plate 33 is slidably connected to the deep groove 32 by a spring, when the baffle 23 extends into the deep groove 32, it will squeeze the top plate 33 in the deep groove 32, and the top plate 33 will compress the spring connected to the top plate 33. When the baffle 23 gradually moves out of the deep groove 32, the top plate 33 will gradually slide back to its initial state under the push of the spring. When the baffle 23 is completely removed from the deep groove 32, the top plate 33 returns to its initial state. During the process of the top plate 33 returning to its initial state, it can scrape the inner wall of the deep groove 32, thereby preventing some garbage from entering the deep groove 32 and causing blockage.

[0081] Example 3: Inclined grooves 5 are provided on the left side walls of the belt filter 2 on both sides of the primary sedimentation tank 1, and the inclined grooves 5 are parallel to the belt filter 2.

[0082] The isolation mechanism includes a floating roller 51; a rotating rod 52 is fixedly connected to the floating roller 51, and the rotating rod 52 is located in two inclined grooves 5;

[0083] The outer ring surface of the floating roller 51 is fixedly connected with evenly arranged rotating plates 53;

[0084] In this embodiment, a sliding plate 54 is slidably connected in both inclined grooves 5, and the sliding plate 54 initially extends out of the inclined groove 5 and extends above the primary sedimentation tank 1.

[0085] The two sides of the rotating rod 52 rotate within the opposite sliding plate 54 respectively; a second motor 55 is fixedly installed on one side of the sliding plate 54 extending above the primary sedimentation tank 1, and a pulley is installed on the rotating shaft of the second motor 55.

[0086] The pulley and the rotating roller 21 are rotatably connected by a drive belt 56. When the second motor 55 rotates, it will drive the rotating rod 52 to rotate through the drive belt 56.

[0087] In this embodiment, each of the rotating plates 53 is provided with uniformly arranged second drain holes 57;

[0088] Specifically, when the liquid level in the initial settling tank 1 gradually rises, the float roller 51 moves upward along the inclined chute 5 under the action of buoyancy. Since the inclined chute 5 is parallel to the belt filter 2, the upward-moving float roller 51 is always parallel to the belt filter 2. When the float roller 51 moves upward, it will drive the slide plate 54 to slide in the inclined chute 5 through the rotating rod 52, and the top of the slide plate 54 will gradually move out of the inclined chute 5. At the same time, it will drive the second motor 55 and the drive belt 56 installed on the slide plate 54 to move upward.

[0089] More specifically, when suspended garbage in the sewage floats to the position of the float roller 51, the float roller 51 can block the garbage, causing the garbage to accumulate on the left side of the float roller 51. This prevents all the floating garbage from floating to the position of the belt filter screen 2 at once, and prevents too much garbage from being carried away by the belt filter screen 2, making the garbage on the belt filter screen 2 too thick, resulting in incomplete squeezing by the squeezing roller 3, thus preventing some of the water in the garbage from being discharged.

[0090] Furthermore, when it is necessary to discharge the waste, the second motor 55 is controlled to rotate. The second motor 55 will drive the rotating rod 52 and the floating roller 51 to rotate slowly clockwise through the drive belt 56. During the rotation of the floating roller 51, the floating roller 51 will drive the evenly arranged rotating plate 53 to rotate. When the rotating plate 53 rotates, it will pick up part of the waste accumulated on the left side of the floating roller 51 and gradually follow the rotating plate 53 to rotate clockwise. When the rotating plate 53 drives the waste to the top, this part of the waste is above the liquid surface, and the excess water in this part of the waste will flow down from the second drain hole 57, thereby reducing the amount of water carried by the waste. When the rotating plate 53 drives the waste to the lower right position, this part of the waste will fall on the passing belt filter screen 2 and then be driven by the belt filter screen 2 to the squeezing roller 3 for squeezing.

[0091] By setting a floating roller 51, its position can be automatically adjusted according to the height of the liquid level. At the same time, it can block the garbage. When the rotating plate 53 rotates, it can carry away some of the garbage, so that the garbage can be transferred to the belt filter screen 2 in batches. Then, it is squeezed by the squeezing roller 3 in batches, thus avoiding the floating garbage from all floating to the belt filter screen 2 at once. This prevents too much garbage from being carried away by the belt filter screen 2 directly, making the garbage on the belt filter screen 2 too thick, which would result in incomplete squeezing by the squeezing roller 3, thus preventing the water in some garbage from being discharged.

[0092] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0093] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A municipal drainage pretreatment device, comprising a primary sedimentation tank (1); characterized in that: The primary sedimentation tank (1) has an inlet (11) on its left end face and an outlet (12) on its right end face. A collection chamber (13) is fixedly installed above the outlet (12); a separation mechanism is provided on the left side of the outlet (12); the separation mechanism includes a belt filter (2); the belt filter (2) rotates on two rotating rollers (21); The bottom roller (21) rotates inside the primary sedimentation tank (1); the top roller (21) is provided with mounting plates (22) on both sides, and the mounting plates (22) are installed on the primary sedimentation tank (1), and the top roller (21) rotates on the two mounting plates (22); The belt filter (2) is fixedly connected with uniformly arranged baffles (23), and the baffles (23) are provided with uniformly arranged first leakage holes (24); A water control mechanism is provided between the two mounting plates (22), and the water control mechanism is used to control the water for garbage in the water; The roller (21) at the bottom has an inclined plate (14) on its left side, and the inclined plate (14) has an arc surface on the side near the belt filter (2), and the rotating baffle (23) will pass through the arc surface. The inclined plate (14) is fitted with a baffle (15) on one side near the rotating roller (21) by a torsion spring, and the other side of the baffle (15) is in contact with the belt filter (2). An isolation mechanism is provided above the bottom roller (21), and the isolation mechanism is used to isolate floating garbage on the water; The water control mechanism includes a squeezing roller (3); the squeezing roller (3) rotates between two mounting plates (22); A first motor (31) is fixedly mounted on one of the mounting plates (22), and the first motor (31) is used to drive the extrusion roller (3) to rotate counterclockwise; The outer ring surface of the extrusion roller (3) is provided with uniformly arranged deep grooves (32), and the deep grooves (32) engage with the baffles (23) on the belt filter screen (2); the openings of the deep grooves (32) are all provided with rounded corners; In the initial state, one of the baffles (23) extends into one of the deep grooves (32). When the extrusion roller (3) rotates, the deep grooves (32) on the extrusion roller (3) will engage with the baffles (23) in turn. Below the extrusion roller (3), there is a support plate (4) inside the belt filter (2), and the support plate (4) is parallel to the belt filter (2); the two sides of the support plate (4) are mounted on the mounting plate (22); The support plate (4) has grooves (41) on both sides of the two mounting plates (22), and the grooves (41) are perpendicular to the belt filter (2). The support plate (4) is fixedly installed with sliders (42) on both end faces near the slide groove (41), and the sliders (42) slide in the slide groove (41); Both sliders (42) are fixedly connected to springs below, and the other side of the springs is connected to the bottom of the groove (41); the support plate (4) is initially attached to the belt filter (2) above; The support plate (4) consists of a base plate (43) and multiple long blocks (44); the slider (42) is fixedly connected to the base plate (43); a slide rail (45) is provided on the top end face of the base plate (43); the long blocks (44) are slidably connected in the slide rail (45), and adjacent long blocks (44) are in close contact with each other; a spring is fixedly connected to the bottom of each long block (44), and the other side of the spring is connected to the bottom of the slide rail (45); a through hole is provided at the bottom of the base plate (43), and the through hole is used for water leakage; The belt filter (2) has inclined grooves (5) on the side walls on both sides of the primary sedimentation tank (1) on the left side, and the inclined grooves (5) are parallel to the belt filter (2). The isolation mechanism includes a floating roller (51); a rotating rod (52) is fixedly connected in the floating roller (51), and the rotating rod (52) is located in two inclined grooves (5); The outer ring surface of the floating roller (51) is fixedly connected with evenly arranged rotating plates (53); Slide plates (54) are slidably connected in both of the inclined troughs (5), and the slide plates (54) initially extend out of the inclined troughs (5) and extend above the primary sedimentation tank (1); The rotating rod (52) rotates on both sides within the opposing sliding plate (54); a second motor (55) is fixedly installed on one side of the sliding plate (54) extending above the primary sedimentation tank (1), and a pulley is installed on the rotating shaft of the second motor (55); The pulley and the roller (21) are connected by a drive belt (56) for rotation. When the second motor (55) rotates, it will drive the rotating rod (52) to rotate through the drive belt (56).

2. The municipal drainage pretreatment equipment according to claim 1, characterized in that: Each of the extrusion rollers (3) has a top plate (33) slidably connected in the deep groove (32); Each of the top plates (33) is fixedly connected to a spring, and the other side of the spring is connected to the bottom of the deep groove (32). In the initial state, the top plate (33) is located at the opening of the deep groove (32).

3. The municipal drainage pretreatment equipment according to claim 1, characterized in that: Each of the rotating plates (53) is provided with a uniformly arranged second drain hole (57).

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