Municipal sewage treatment equipment

Abstract

The invention relates to the technical field of sewage treatment, and discloses municipal sewage treatment equipment which comprises a sedimentation tank and a case, a stirrer is arranged in the sedimentation tank, a blow-off pipe is fixedly mounted on the sedimentation tank, one end of the blow-off pipe extends to the bottom of an inner cavity of the sedimentation tank, and the other end of the blow-off pipe penetrates through the inner wall of the sedimentation tank and extends into the case. And an opening and closing mechanism, a triggering mechanism and a dredging mechanism are arranged in the case. According to the device, the single treading action of a worker is used as power input, the opening and closing mechanism can be synchronously controlled to open a blow-off pipe passage, the pipeline input end is forcibly dredged immediately through the dredging mechanism in hydraulic transmission, and the problem that the blow-off pipe input end is blocked due to impurity accumulation is solved; and the efficiency and the reliability of pollution discharge operation are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically to a municipal wastewater treatment device. Background Technology

[0002] In municipal wastewater treatment processes, sedimentation tanks are key structures for achieving solid-liquid separation, and their efficiency directly affects subsequent treatment processes and the final effluent quality. Currently, impurities collected at the bottom of sedimentation tanks are mainly discharged through built-in drain pipes.

[0003] However, in actual operation, due to the complex composition and tendency of impurities to caking, the inlet of the sewage pipe is prone to blockage, leading to operational interruptions. This not only severely affects the normal operating efficiency of the sedimentation tank but may even cause the sludge at the bottom of the tank to decompose and float to the surface, resulting in secondary pollution. Current technologies for addressing this type of blockage mostly rely on workers using long poles and other tools for mechanical unblocking or temporarily using handheld high-pressure water guns for flushing. These methods are not only physically demanding and inefficient, posing certain safety hazards, but also make it difficult to guarantee the timeliness of unblocking operations, becoming a technical bottleneck restricting the stable operation of municipal sewage treatment equipment. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a municipal sewage treatment device to solve the problems existing in the background art.

[0005] This invention provides the following technical solution: a municipal sewage treatment device, including a sedimentation tank and a casing. A stirrer is installed inside the sedimentation tank, and a sewage pipe is fixedly installed on the sedimentation tank. One end of the sewage pipe extends to the bottom of the sedimentation tank cavity, and the other end passes through the inner wall of the sedimentation tank and extends into the casing. An opening and closing mechanism, a triggering mechanism, and a clearing mechanism are installed inside the casing. The sewage pipe is used to discharge impurities collected at the bottom of the sedimentation tank cavity. The opening and closing mechanism has an open state and a closed state. The closed state of the opening and closing mechanism is used to seal the other end of the sewage pipe, and the open state of the opening and closing mechanism is used to release the seal on the other end of the sewage pipe. The triggering mechanism is used to control the opening and closing mechanism to switch between the open and closed states using the stepping force of workers. The clearing mechanism is used to clear the sewage pipe when the opening and closing mechanism is switched to the open state.

[0006] Preferably, the sewage pipe is equipped with a connector, and the connector is fixedly connected to the input end of the cyclone pump via a flexible hose.

[0007] Preferably, the opening and closing mechanism includes a cover plate, a rotating rod, and a fixed shell. The cover plate is located at the other end of the sewage pipe, the rotating rod is rotatably installed outside the sewage pipe, the cover plate is fixedly installed on the surface of the rotating rod, and a coil spring is sleeved on the surface of the rotating rod.

[0008] Preferably, the fixed shell is fixedly installed inside the chassis. The fixed shell has a sliding groove, in which a slider is slidably installed. A connecting rod one and a connecting rod two are provided between the slider and the rotating rod. One end of the connecting rod one is hinged to the slider, and the other end of the connecting rod one is hinged to one end of the connecting rod two. The other end of the connecting rod two is fixedly connected to one end of the rotating rod.

[0009] Preferably, an L-shaped rod is fixedly mounted on the slider, and a roller is rotatably mounted on one end of the L-shaped rod.

[0010] Preferably, the triggering mechanism includes a guide rod, a moving rod, a connecting rod, and a rotating shaft. The guide rod is fixedly installed inside the chassis, the moving rod is sleeved on the surface of the guide rod, and a compression spring is sleeved on the surface of the guide rod. The rotating shaft is rotatably installed outside the chassis, and a pedal is fixedly installed on the surface of the rotating shaft. One end of the connecting rod is hinged to the pedal, and the other end of the connecting rod is hinged to the bottom end of the moving rod.

[0011] Preferably, a support frame is fixedly connected to the top of the motion rod, and the support frame has inclined grooves and flat grooves, and a trigger plate is also provided on the support frame.

[0012] Preferably, the unblocking mechanism includes a main hydraulic cylinder and an auxiliary hydraulic cylinder. The main hydraulic cylinder is fixedly installed inside the machine housing. A main piston is installed inside the main hydraulic cylinder. The main piston and the main hydraulic cylinder form a sealed sliding guide fit. A main piston rod is fixedly connected to the center of the main piston. One end of the main piston rod passes through the inner wall of the main hydraulic cylinder and extends outward.

[0013] Preferably, the auxiliary hydraulic cylinder is fixedly installed inside the machine housing, and an auxiliary piston is provided inside the auxiliary hydraulic cylinder. The auxiliary piston and the auxiliary hydraulic cylinder form a sealed sliding guide fit. An auxiliary piston rod is fixedly connected to the center of the auxiliary piston. One end of the auxiliary piston rod passes through the inner wall of the auxiliary hydraulic cylinder and extends outward. A drain head is fixedly connected to one end of the auxiliary piston rod.

[0014] Preferably, an auxiliary spring is fitted on the surface of the main piston rod, and a return spring is fitted on the surface of the auxiliary piston rod. The main hydraulic cylinder and the auxiliary hydraulic cylinder are fixedly connected by an oil supply pipe.

[0015] The beneficial effects of this invention are: This invention incorporates an opening and closing mechanism, a triggering mechanism, and a clearing mechanism that work together. A single foot-operated action by the operator serves as the power input, simultaneously controlling the opening and closing mechanism to open the sewage pipe passage. Immediately, the hydraulically driven clearing mechanism forcefully clears the pipe's inlet, solving the problem of blockage caused by impurities at the sewage pipe's inlet. This significantly improves the efficiency and reliability of sewage discharge operations. Furthermore, the overall structure of this invention does not rely on external power or complex electrical control systems; all functions are achieved through the interaction of the foot-operated action and the hydraulic circuit. This not only reduces the equipment's manufacturing costs and subsequent maintenance risks but also alleviates the operator's workload, ensuring the equipment can operate stably for extended periods. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a cross-sectional view of the overall structure of the present invention.

[0019] Figure 3 This is a diagram showing the combination of the opening / closing mechanism, the triggering mechanism, and the unblocking mechanism of the present invention.

[0020] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the image.

[0021] Figure 5 This is a schematic diagram of the opening and closing mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram of the triggering mechanism of the present invention.

[0023] Figure 7 This is a schematic diagram of the support frame structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the unblocking mechanism of the present invention.

[0025] The attached diagram is labeled as follows: 1. Sedimentation tank; 11. Agitator; 2. Sewage pipe; 21. Connecting nozzle; 22. Flexible hose; 3. Casing; 4. Opening / closing mechanism; 41. Cover plate; 42. Rotating rod; 421. Coil spring; 43. Connecting rod one; 44. Connecting rod two; 45. Fixed shell; 451. Slide groove; 46. Sliding block; 47. L-shaped rod; 471. Roller; 5. Triggering mechanism; 51. Guide rod; 511. Compression spring. 52. Moving rod; 53. Connecting rod; 54. Pedal; 55. Rotating shaft; 56. Support frame; 561. Inclined groove; 562. Flat groove; 563. Trigger plate; 6. Unblocking mechanism; 61. Main hydraulic cylinder; 62. Main piston; 63. Main piston rod; 631. Auxiliary spring; 64. Secondary hydraulic cylinder; 65. Secondary piston; 66. Secondary piston rod; 661. Return spring; 67. Unblocking head; 68. Oil supply pipe. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Reference Figures 1 to 3 This invention provides a municipal sewage treatment device, including a sedimentation tank 1 and a housing 3. A stirrer 11 is installed inside the sedimentation tank 1, and a sewage pipe 2 is fixedly installed on the sedimentation tank 1. One end of the sewage pipe 2 extends to the bottom of the inner cavity of the sedimentation tank 1, and the other end of the sewage pipe 2 passes through the inner wall of the sedimentation tank 1 and extends into the housing 3. An opening and closing mechanism 4, a triggering mechanism 5, and a dredging mechanism 6 are installed inside the housing 3. The sewage pipe 2 is used to output impurities collected at the bottom of the inner cavity of the sedimentation tank 1. The opening and closing mechanism 4 is provided with an open state and a closed state. The closed state of the opening and closing mechanism 4 is used to seal the other end of the sewage pipe 2, and the open state of the opening and closing mechanism 4 is used to unblock the other end of the sewage pipe 2. The triggering mechanism 5 is used to control the opening and closing mechanism 4 to switch between the open state and the closed state by means of the worker's stepping force. The dredging mechanism 6 is used to dredge the sewage pipe 2 when the opening and closing mechanism 4 is switched to the open state.

[0028] Reference Figures 1 to 5 The opening and closing mechanism 4 includes a cover plate 41, a rotating rod 42, and a fixed shell 45. The cover plate 41 is located at the other end of the sewage pipe 2. The rotating rod 42 is rotatably mounted on the outside of the sewage pipe 2. The cover plate 41 is fixedly mounted on the surface of the rotating rod 42. A coil spring 421 is sleeved on the surface of the rotating rod 42. By utilizing the energy storage and release of the coil spring 421, the automatic reset and stable sealing of the cover plate 41 are achieved.

[0029] A connector 21 is provided on the drain pipe 2, and the connector 21 is fixedly connected to the input end of the cyclone pump via a flexible hose 22. The connector 21 and the flexible hose 22 facilitate the connection between the drain pipe 2 and the cyclone pump, improving the convenience of equipment installation and maintenance.

[0030] A fixed housing 45 is fixedly installed inside the chassis 3. A sliding groove 451 is provided on the fixed housing 45, and a slider 46 is slidably installed within the groove 451. A connecting rod 43 and a connecting rod 44 are provided between the slider 46 and the rotating rod 42. One end of the connecting rod 43 is hinged to the slider 46, and the other end is hinged to one end of the connecting rod 44. The other end of the connecting rod 44 is fixedly connected to one end of the rotating rod 42. An L-shaped rod 47 is fixedly installed on the slider 46, and a roller 471 is rotatably installed at one end of the L-shaped rod 47. Through the cooperation of the slider 46, roller 471, and connecting rod structure, linear motion is converted into rotational motion, achieving precise control of the cover plate 41 and ensuring stable opening and closing actions.

[0031] When in use, after municipal sewage is discharged into sedimentation tank 1, the agitator 11 agitates the sewage, causing the fine suspended particles or colloidal particles in the sewage to collide and come into contact with each other, thereby agglomerating into larger and heavier flocs. These enlarged flocs accelerate the settling speed under the action of gravity, causing impurities to be more quickly and concentratedly collected at the bottom of the inner cavity of sedimentation tank 1. Then, under the action of the cyclone pump, the impurities pass through the sewage pipe 2, the connecting nozzle 21 and the hose 22 in sequence and are output to the outside. When impurities enter the sewage pipe 2 from the bottom of the sedimentation tank 1, the flow rate will suddenly increase. Due to inertia, heavier impurities will not immediately follow the fluid to change direction and enter the pipe. They are easy to accumulate at the inlet of the sewage pipe 2. When the inlet of the sewage pipe 2 is blocked by accumulation, the staff uses the triggering mechanism 5 to control the slider 46 and the L-shaped rod 47 to slide upward along the slide groove 451. The slider 46 moves and drives the connecting rod 44 to rotate synchronously around the axis of the rotating rod 42 through the connecting rod 43. The rotating rod 42 also rotates synchronously around its own axis. The rotating rod 42 rotates and drives the cover plate 41 to rotate synchronously around the axis of the rotating rod 42. The coil spring 421 gradually tightens and the elastic force increases. When the cover plate 41 completely releases the blockage of the sewage pipe 2, the opening and closing mechanism 4 switches from the closed state to the open state. Afterwards, the staff used the unblocking device 6 to unclog the inlet of the sewage pipe 2; Afterwards, the staff used the trigger mechanism 5 to control the spring force of the coil spring 421 to be gradually released. The spring force of the coil spring 421 drove the rotating rod 42 to rotate around its own axis. The slider 46 slid down along the slide groove 451 and returned to the initial position. The rotating rod 42 rotated and drove the cover plate 41 to rotate synchronously around the axis of the rotating rod 42. The cover plate 41 gradually blocked the sewage pipe 2. The opening and closing mechanism 4 switched from the open state to the closed state. The cyclone pump could resume operation. Impurities continued to pass through the sewage pipe 2, the connecting nozzle 21 and the hose 22 and were output to the outside.

[0032] In summary, the opening and closing mechanism 4 utilizes a linkage structure and the energy storage and release of the coil spring 421 to not only achieve the switching between the open and closed states, but also seamlessly connect the opening and closing action with the subsequent dredging process in terms of timing, laying the foundation for the automated operation of the entire equipment. Moreover, it requires no electric drive throughout the process, exhibiting extremely high operational reliability and ease of maintenance.

[0033] Reference Figures 1 to 8The triggering mechanism 5 includes a guide rod 51, a moving rod 52, a connecting rod 53, and a rotating shaft 55. The guide rod 51 is fixedly installed inside the housing 3. The moving rod 52 is sleeved on the surface of the guide rod 51, and a compression spring 511 is sleeved on the surface of the guide rod 51. The rotating shaft 55 is rotatably installed outside the housing 3, and a pedal 54 is fixedly installed on the surface of the rotating shaft 55. One end of the connecting rod 53 is hinged to the pedal 54, and the other end of the connecting rod 53 is hinged to the bottom end of the moving rod 52. Through the setting of the pedal 54 and the guide rod 51, the stepping force is converted into linear motion, realizing precise control of the opening and closing mechanism 4, and the operation is simple and labor-saving.

[0034] A receiving frame 56 is fixedly connected to the top of the moving rod 52. The receiving frame 56 has a slanted groove 561 and a flat groove 562. A trigger plate 563 is also provided on the receiving frame 56. The cooperation of the slanted groove and the flat groove 561 and 562 realizes the timing control of the movement process and ensures the sequential execution of the opening, closing and unblocking actions.

[0035] The unblocking mechanism 6 includes a main hydraulic cylinder 61 and an auxiliary hydraulic cylinder 64. The main hydraulic cylinder 61 is fixedly installed inside the housing 3. A main piston 62 is installed inside the main hydraulic cylinder 61, forming a sealed sliding guide fit with the main hydraulic cylinder 61. A main piston rod 63 is fixedly connected to the center of the main piston 62, with one end of the main piston rod 63 passing through the inner wall of the main hydraulic cylinder 61 and extending outward. The auxiliary hydraulic cylinder 64 is fixedly installed inside the housing 3. An auxiliary piston 65 is installed inside the auxiliary hydraulic cylinder 64, forming a sealed sliding guide fit with the auxiliary hydraulic cylinder 64. A auxiliary piston rod 66 is fixedly connected to the center of the auxiliary piston 65, with one end of the auxiliary piston rod 66 passing through the inner wall of the auxiliary hydraulic cylinder 64 and extending outward. An unblocking head 67 is fixedly connected to one end of the auxiliary piston rod 66. Through the cooperation of the hydraulic cylinder and the piston, the stepping force is converted into hydraulic energy, providing a stable driving force for the unblocking head 67, thus realizing direct unblocking of the inlet end of the sewage pipe 2.

[0036] An auxiliary spring 631 is fitted onto the surface of the main piston rod 63, and a return spring 661 is fitted onto the surface of the auxiliary piston rod 66. The main hydraulic cylinder 61 and the auxiliary hydraulic cylinder 64 are fixedly connected via an oil supply pipe 68. The cooperation of the auxiliary spring 631 and the return spring 661 ensures the automatic reset of the piston and the unclogging head 67, improving the cyclic efficiency of the equipment.

[0037] When in use, when the inlet of the sewage pipe 2 is blocked by accumulation, the staff can step on the pedal 54 to make it rotate downward around the rotating shaft 55. The pedal 54 rotates and drives the moving rod 52 to slide synchronously along the guide rod 51 through the connecting rod 53. The compression spring 511 contracts and increases its elasticity under the compression of the moving rod 52. The moving rod 52 moves and drives the receiving frame 56 to move synchronously. During the movement of the receiving frame 56, the roller 471 first rolls upward along the inclined groove 561. Under the guidance of the inclined groove 561, the slider 46 and the L-shaped rod 47 slide upward along the sliding groove 451. The slider 46 moves and drives the connecting rod 44 to rotate synchronously around the axis of the rotating rod 42 through the connecting rod 1 43. The rotating rod 42 also rotates synchronously around its own axis. The rotating rod 42 rotates and drives the cover plate 41 to rotate synchronously around the axis of the rotating rod 42. The coil spring 421 gradually tightens and the elastic force increases. When the cover plate 41 completely releases the blockage of the sewage pipe 2, the opening and closing mechanism 4 switches from the closed state to the open state. Afterwards, roller 471 leaves the inclined groove 561 and rolls along the flat groove 562. During this process, the height position of slider 46 and L-shaped rod 47 remains unchanged, the opening and closing mechanism 4 remains open, the trigger plate 563 on the receiving frame 56 gradually contacts one end of the main piston rod 63 and squeezes the main piston rod 63. The main piston rod 63 moves and drives the main piston 62 to slide along the inside of the main hydraulic cylinder 61. At the same time, the auxiliary spring 631 contracts and the elastic force increases. The main piston 62 moves while squeezing the hydraulic oil. Under the action of the hydraulic oil, the auxiliary piston 65 slides synchronously along the inside of the auxiliary hydraulic cylinder 64. The return spring 661 contracts and the elastic force increases under the squeezing of the auxiliary piston 65. The auxiliary piston 65 moves and drives the unblocking head 67 to move synchronously through the auxiliary piston rod 66. The unblocking head 67 gradually enters the sewage pipe 2 and passes through the input end of the sewage pipe 2, completing the unblocking of the input end of the sewage pipe 2. Afterwards, the staff released the pedal 54, and the elastic force of the compression spring 511 was gradually released. The elastic force of the compression spring 511 drove the moving rod 52 to slide in the opposite direction along the guide rod 51. The moving rod 52 moved and drove the pedal 54 to rotate upward around the rotating axis 55 through the connecting rod 53. The moving rod 52 moved and drove the receiving frame 56 to move in the opposite direction synchronously. During the movement of the receiving frame 56, the roller 471 first rolls along the flat groove 562, the trigger plate 563 gradually releases the pressure on the main piston rod 63, the elastic force of the auxiliary spring 631 is released, and the elastic force of the auxiliary spring 631 drives the main piston 62 to slide along the inside of the main hydraulic cylinder 61 and return to the initial position. At the same time, the elastic force of the reset spring 661 is gradually released, and the elastic force of the reset spring 661 drives the auxiliary piston 65 to slide along the inside of the auxiliary hydraulic cylinder 64 and return to the initial position. The movement of the auxiliary piston 65 drives the unblocking head 67 back to the initial position through the auxiliary piston rod 66. Afterwards, roller 471 leaves the flat groove 562 and rolls down along the inclined groove 561. During this process, the elastic force of coil spring 421 is gradually released. The elastic force of coil spring 421 drives rotating rod 42 to rotate around its own axis. Slider 46 slides down along chute 451 and returns to its initial position. Rotating rod 42 rotates and drives cover plate 41 to rotate synchronously around the axis of rotating rod 42. Cover plate 41 gradually blocks sewage pipe 2. Opening and closing mechanism 4 switches from open state to closed state. Cyclone pump can resume operation. Impurities continue to pass through sewage pipe 2, connecting nozzle 21 and hose 22 and are output to the outside.

[0038] In summary, the triggering mechanism 5, through the setting of the inclined groove 561, flat groove 562 and trigger plate 563 on the receiving frame 56, decomposes a continuous stepping action into a process of "first opening, then unblocking, and then resetting". Its core lies in using a hydraulic transmission structure to transmit the displacement of the main piston 62 to the unblocking head 67, thereby generating an effective unblocking force sufficient to break up hardened impurities, which greatly improves the success rate and efficiency of sewage discharge operations. The entire system realizes the complex sequential control that usually requires an electrical control system through mechanical and hydraulic means, which significantly reduces the manufacturing cost, energy consumption and failure rate of the equipment, while simplifying the operation to a single stepping action, making it highly practical and easy to promote.

[0039] The working principle of this invention is as follows: After municipal sewage is discharged into sedimentation tank 1, the agitator 11 stirs the sewage, causing the fine suspended particles or colloidal particles in the sewage to collide and come into contact with each other, thereby agglomerating into larger and heavier flocs. These enlarged flocs accelerate the settling speed under the action of gravity, so that the impurities are more quickly and concentratedly collected at the bottom of the inner cavity of sedimentation tank 1. Then, under the action of the cyclone pump, the impurities pass through the sewage pipe 2, the connecting nozzle 21 and the hose 22 in sequence and are output to the outside.

[0040] When impurities enter the drain pipe 2 from the bottom of the sedimentation tank 1, the flow rate will suddenly increase. Due to inertia, heavier impurities will not immediately follow the fluid to change direction and enter the pipe, and are prone to accumulate at the inlet of the drain pipe 2. When the inlet of the drain pipe 2 is blocked by accumulation, the staff will step on the pedal 54 to make it rotate downward around the rotating shaft 55. The pedal 54 rotates and drives the moving rod 52 to slide synchronously along the guide rod 51 through the connecting rod 53. The compression spring 511 contracts and increases its elasticity under the compression of the moving rod 52. The moving rod 52 moves and drives the receiving frame 56 to move synchronously.

[0041] During the movement of the receiving frame 56, the roller 471 first rolls upward along the inclined groove 561. Under the guidance of the inclined groove 561, the slider 46 and the L-shaped rod 47 slide upward along the sliding groove 451. The slider 46 moves and drives the connecting rod 44 to rotate synchronously around the axis of the rotating rod 42 through the connecting rod 43. The rotating rod 42 also rotates synchronously around its own axis. The rotating rod 42 rotates and drives the cover plate 41 to rotate synchronously around the axis of the rotating rod 42. The coil spring 421 gradually tightens and the elastic force increases. When the cover plate 41 completely releases the blockage of the sewage pipe 2, the opening and closing mechanism 4 switches from the closed state to the open state.

[0042] Afterwards, roller 471 leaves the inclined groove 561 and rolls along the flat groove 562. During this process, the height position of slider 46 and L-shaped rod 47 remains unchanged, the opening and closing mechanism 4 remains open, the trigger plate 563 on the receiving frame 56 gradually contacts one end of the main piston rod 63 and squeezes the main piston rod 63. The main piston rod 63 moves and drives the main piston 62 to slide along the inside of the main hydraulic cylinder 61. At the same time, the auxiliary spring 631 contracts and the elastic force increases. While the main piston 62 moves, it squeezes the hydraulic oil. Under the action of the hydraulic oil, the auxiliary piston 65 slides synchronously along the inside of the auxiliary hydraulic cylinder 64. The return spring 661 contracts and the elastic force increases under the compression of the auxiliary piston 65. The auxiliary piston 65 moves and drives the unblocking head 67 to move synchronously through the auxiliary piston rod 66. The unblocking head 67 gradually enters the sewage pipe 2 and passes through the input end of the sewage pipe 2, completing the unblocking of the input end of the sewage pipe 2.

[0043] Afterwards, the staff released the pedal 54, and the elastic force of the compression spring 511 was gradually released. The elastic force of the compression spring 511 drove the moving rod 52 to slide in the opposite direction along the guide rod 51. The moving rod 52 moved and drove the pedal 54 to rotate upward around the rotating axis 55 through the connecting rod 53. The moving rod 52 moved and drove the receiving frame 56 to move in the opposite direction synchronously.

[0044] During the movement of the receiving frame 56, the roller 471 first rolls along the flat groove 562, the trigger plate 563 gradually releases the pressure on the main piston rod 63, the elastic force of the auxiliary spring 631 is released, and the elastic force of the auxiliary spring 631 drives the main piston 62 to slide along the inside of the main hydraulic cylinder 61 and return to the initial position. At the same time, the elastic force of the reset spring 661 is gradually released, and the elastic force of the reset spring 661 drives the auxiliary piston 65 to slide along the inside of the auxiliary hydraulic cylinder 64 and return to the initial position. The movement of the auxiliary piston 65 drives the unblocking head 67 back to the initial position through the auxiliary piston rod 66.

[0045] Afterwards, roller 471 leaves the flat groove 562 and rolls down along the inclined groove 561. During this process, the elastic force of coil spring 421 is gradually released. The elastic force of coil spring 421 drives rotating rod 42 to rotate around its own axis. Slider 46 slides down along chute 451 and returns to its initial position. Rotating rod 42 rotates and drives cover plate 41 to rotate synchronously around the axis of rotating rod 42. Cover plate 41 gradually blocks sewage pipe 2. Opening and closing mechanism 4 switches from open state to closed state. Cyclone pump can resume operation. Impurities continue to pass through sewage pipe 2, connecting nozzle 21 and hose 22 and are output to the outside.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A municipal wastewater treatment device, comprising a sedimentation tank (1) and a casing (3), wherein a stirrer (11) is provided inside the sedimentation tank (1), characterized in that, A sewage pipe (2) is fixedly installed on the sedimentation tank (1). One end of the sewage pipe (2) extends to the bottom of the inner cavity of the sedimentation tank (1), and the other end of the sewage pipe (2) passes through the inner wall of the sedimentation tank (1) and extends into the machine box (3). The machine box (3) is equipped with an opening and closing mechanism (4), a triggering mechanism (5), and a dredging mechanism (6). The sewage pipe (2) is used to output the impurities collected at the bottom of the inner cavity of the sedimentation tank (1) to the outside. The opening and closing mechanism (4) is set with an open state and a closed state. The closed state of the opening and closing mechanism (4) is used to block the other end of the sewage pipe (2). The open state of the opening and closing mechanism (4) is used to unblock the other end of the sewage pipe (2). The triggering mechanism (5) is used to control the opening and closing mechanism (4) to switch between the open state and the closed state by means of the worker's stepping force. The dredging mechanism (6) is used to dredge the sewage pipe (2) when the opening and closing mechanism (4) is switched to the open state.

2. The municipal sewage treatment equipment according to claim 1, characterized in that, A connector (21) is provided on the sewage pipe (2), and the connector (21) is fixedly connected to the input end of the cyclone pump through a hose (22).

3. A municipal wastewater treatment device according to claim 2, characterized in that, The opening and closing mechanism (4) includes a cover plate (41), a rotating rod (42) and a fixed shell (45). The cover plate (41) is located at the other end of the sewage pipe (2). The rotating rod (42) is rotatably installed outside the sewage pipe (2). The cover plate (41) is fixedly installed on the surface of the rotating rod (42). A coil spring (421) is sleeved on the surface of the rotating rod (42).

4. A municipal wastewater treatment device according to claim 3, characterized in that, The fixed shell (45) is fixedly installed inside the chassis (3). A sliding groove (451) is provided on the fixed shell (45). A slider (46) is slidably installed in the sliding groove (451). A connecting rod (43) and a connecting rod (44) are provided between the slider (46) and the rotating rod (42). One end of the connecting rod (43) is hinged to the slider (46), and the other end of the connecting rod (43) is hinged to one end of the connecting rod (44). The other end of the connecting rod (44) is fixedly connected to one end of the rotating rod (42).

5. A municipal wastewater treatment device according to claim 4, characterized in that, An L-shaped rod (47) is fixedly installed on the slider (46), and a roller (471) is rotatably installed on one end of the L-shaped rod (47).

6. A municipal wastewater treatment device according to claim 5, characterized in that, The triggering mechanism (5) includes a guide rod (51), a moving rod (52), a connecting rod (53), and a rotating shaft (55). The guide rod (51) is fixedly installed inside the housing (3). The moving rod (52) is sleeved on the surface of the guide rod (51). A compression spring (511) is sleeved on the surface of the guide rod (51). The rotating shaft (55) is rotatably installed outside the housing (3). A pedal (54) is fixedly installed on the surface of the rotating shaft (55). One end of the connecting rod (53) is hinged to the pedal (54), and the other end of the connecting rod (53) is hinged to the bottom end of the moving rod (52).

7. A municipal wastewater treatment device according to claim 6, characterized in that, The top of the moving rod (52) is fixedly connected to a support frame (56), and the support frame (56) is provided with a slanted groove (561) and a flat groove (562). A trigger plate (563) is also provided on the support frame (56).

8. A municipal wastewater treatment device according to claim 7, characterized in that, The unblocking mechanism (6) includes a main hydraulic cylinder (61) and an auxiliary hydraulic cylinder (64). The main hydraulic cylinder (61) is fixedly installed in the housing (3). A main piston (62) is provided inside the main hydraulic cylinder (61). The main piston (62) and the main hydraulic cylinder (61) form a sealed sliding guide fit. A main piston rod (63) is fixedly connected at the center of the main piston (62). One end of the main piston rod (63) passes through the inner wall of the main hydraulic cylinder (61) and extends outward.

9. A municipal wastewater treatment device according to claim 8, characterized in that, The auxiliary hydraulic cylinder (64) is fixedly installed inside the machine housing (3). An auxiliary piston (65) is provided inside the auxiliary hydraulic cylinder (64). The auxiliary piston (65) and the auxiliary hydraulic cylinder (64) form a sealed sliding guide fit. An auxiliary piston rod (66) is fixedly connected at the center of the auxiliary piston (65). One end of the auxiliary piston rod (66) passes through the inner wall of the auxiliary hydraulic cylinder (64) and extends outward. A drain head (67) is fixedly connected to one end of the auxiliary piston rod (66).

10. A municipal wastewater treatment device according to claim 9, characterized in that, An auxiliary spring (631) is fitted on the surface of the main piston rod (63), and a return spring (661) is fitted on the surface of the auxiliary piston rod (66). The main hydraulic cylinder (61) and the auxiliary hydraulic cylinder (64) are fixedly connected through an oil supply pipe (68).

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