Petrochemical industry production sewage treatment device

Abstract

The invention discloses a petrochemical industry production sewage treatment device, and relates to the technical field of sewage treatment, the petrochemical industry production sewage treatment device comprises a water tank, the front end of the water tank is fixedly provided with a drainage pipe, the rear end of the water tank is fixedly provided with a water inlet pipe, the rear end of the water tank is fixedly provided with a motor, and the rear part of the inner wall of the water tank is rotatably provided with a flow limiting baffle; a rope pulley is fixedly installed on the rear portion of the inner wall of the water tank, a buoy is fixedly connected to the front end of the bottom of a flow limiting blocking piece through a hemp rope, the output end of a motor is fixedly connected with a reciprocating groove rod, and the motor and the reciprocating groove rod drive a strip-shaped scraper and a material collecting plate to move. According to the sewage treatment device, floating objects on the surface of sewage are separated and then collected, meanwhile, an oil scraping plate is driven by a material collecting plate to scrape away residual adhesive liquid on the surface of the material collecting plate, and secondary pollution to treated sewage caused by residual pollution formed on the surface of the material collecting plate is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to a sewage treatment device for petrochemical production. Background Technique

[0002] The sewage treatment device for petrochemical production is mainly used to treat the sewage generated after a series of chemical processing of petroleum in petrochemical plants. The purpose is to conduct rough pretreatment on the sewage to remove sediment and solid or liquid floating substances in the sewage.

[0003] The patent with the patent announcement number CN217780894U relates to the technical field of petroleum sewage treatment, including a sewage storage tank and a sewage guiding pipe. The sewage guiding pipe is fixedly installed on the inner side wall of the sewage storage tank. A partition board is fixedly installed on the inner side wall of the sewage storage tank. An opening is provided on the partition board. A sealing strip is fixedly installed on one side of the partition board. A T-shaped sliding groove is provided on one side of the partition board. A T-shaped sliding block is movably installed in the T-shaped sliding groove. An oil guiding plate is fixedly installed on one side of the T-shaped sliding block. A moving mechanism is provided on the sewage storage tank. A filtering tank is fixedly installed at the bottom of the sewage storage tank. An installation plate is provided in the filtering tank. A filtering mechanism is provided on the installation plate. A diversion pipe is fixedly installed on the filtering tank. With the cooperation of the moving mechanism and the oil guiding plate, the oil in the petroleum sewage can be taken out, avoiding the direct discharge of oil along with the sewage. Under the action of the filtering mechanism, the separated sewage and oil can be filtered.

[0004] In the above patent, there are many beneficial effects and it can achieve the oil-water separation of oily sewage through a simple structure. However, after scraping and collecting the floating substances on the sewage surface, sticky liquid may remain on its material receiving plate, resulting in secondary pollution to the treated water. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a sewage treatment device for petrochemical production, which solves the problems raised in the above background technique.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A petrochemical production sewage treatment device, including a water tank, a drain pipe is fixedly installed at the front end of the water tank, a water inlet pipe is fixedly installed at the rear end of the water tank, a motor is fixedly installed at the rear end of the water tank, a current-limiting baffle is rotatably installed at the rear part of the inner wall of the water tank, a rope pulley is fixedly installed at the rear part of the inner wall of the water tank, a floating buoy is fixedly connected to the front end of the bottom of the current-limiting baffle through a hemp rope, the output end of the motor is fixedly connected to a reciprocating groove rod, the end of the reciprocating groove rod away from the motor is rotatably installed at the top of the inner wall of the water tank through a support, a strip-shaped scraper is rotatably installed on the circumferential surface of the reciprocating groove rod, a material collecting plate is rotatably installed at the front end of the inner wall of the water tank, a telescopic connecting rod is rotatably installed at the front end of the reciprocating rod support, and a scraping oil plate is fixedly installed at the end of the telescopic connecting rod away from the reciprocating rod support. Through the movement of the strip-shaped scraper and the material collecting plate driven by the motor and the reciprocating groove rod, the floating objects on the surface of the sewage are separated and collected, and at the same time, the scraping oil plate realizes the scraping of the sticky liquid remaining on the surface of the material collecting plate driven by the material collecting plate, avoiding the formation of residual pollution on the surface of the material collecting plate.

[0007] According to the above technical solution, the hemp rope contacts the circumferential surface of the rope pulley, the reciprocating groove rod rotates through the rear inner wall of the water tank, the strip-shaped scraper is threadedly connected to the reciprocating groove rod, the bottom of the scraping oil plate contacts the top of the material collecting plate, the material collecting plate is located on the movement track of the strip-shaped scraper, and the spiral groove opened on the reciprocating groove rod realizes the change of the movement direction of the strip-shaped scraper while the rotation direction of the reciprocating groove rod itself remains unchanged.

[0008] According to the above technical solution, a sludge scraping device is arranged inside the water tank. The sludge scraping device includes a sludge scraping plate, a telescopic push plate, a sediment partition plate and a blocking door. The sludge scraping plate is fixedly connected to the strip-shaped scraper through a fixed connecting rod. The telescopic push plate is slidably installed at the front end of the top of the sludge scraping plate. The sediment partition plate is fixedly installed at the bottom of the inner wall of the water tank. The blocking door is rotatably installed at the rear of the sediment partition plate through a rotating shaft. When the telescopic push plate contacts the blocking door, it slides backward to close the gap between the sludge scraping plate and the blocking door, thereby avoiding the discharge of the treated sewage together with the sediment from the sediment discharge port when discharging the sediment.

[0009] According to the above technical solution, the sludge scraping device further includes a stirring rod and a nylon rope. The stirring rod is rotatably installed at the bottom of the water tank. The circumferential surface of the top of the stirring rod is fixedly connected to the front end face of the blocking door through a nylon rope. The stirring rod realizes the periodic dredging of the sediment discharge port, avoiding the blockage of the sediment discharge port caused by the long-term discharge of sediment.

[0010] According to the above technical solution, the blocking door is located on the movement track of the telescopic push plate, the nylon rope is wound around the circumferential surface of the top of the stirring rod, a sediment discharge port is provided at the front end of the water tank, a scroll spring is arranged between the stirring rod and the bottom of the water tank, and the resilience of the scroll spring can timely close the blocking door, avoiding the treated sewage from flowing out of the sediment discharge port.

[0011] According to the above technical solution, a waste box is fixedly installed at the front end of the water tank, a transmission connecting rod is rotatably installed on the top of the material receiving plate, one end of the transmission connecting rod far from the material receiving plate is fixedly connected with a hydraulic rod I, a hydraulic cylinder is fixedly installed on the inner wall top of the waste box, a hydraulic rod II is arranged inside the hydraulic cylinder, an L-shaped pressing plate is fixedly installed at the bottom of the hydraulic rod II, and a separation plate is rotatably installed on the inner wall of the waste box. The acting force of extrusion by the L-shaped pressing plate promotes the separation of solids and liquids in the floating objects, improving the overall treatment efficiency of the device.

[0012] According to the above technical solution, a grooved rotating rod is rotatably installed on the inner wall top of the waste box, a connecting sleeve is slidably installed on the inner wall top of the waste box through a sleeve connecting rod, a one-way rotating rod is rotatably installed at the front end of the connecting sleeve, and a bottom support plate is fixedly connected to the bottom of the grooved rotating rod. The one-way rotating rod realizes the sliding of the L-shaped pressing plate in different directions for different transmissions.

[0013] According to the above technical solution, a special-shaped chute is provided on the circumferential surface of the grooved rotating rod. The lower half of the special-shaped chute is spiral, and the upper half of the special-shaped chute is linear. A chute rod is fixedly installed at the rear of the connecting sleeve, and one end of the chute rod far from the connecting sleeve contacts the inner wall of the chute of the special-shaped chute. A triangular top block is slidably installed at the front end of the connecting sleeve, the bottom of the triangular top block contacts the top of the one-way rotating rod, a reset top rod is fixedly installed on the inner wall top of the waste box, the reset top rod is located on the movement track of the triangular top block, a guide plate is rotatably connected to the front end of the separation plate, a liquid sewage discharge port is provided at the rear of the bottom of the waste box, a solid sewage discharge port is provided at the front of the bottom of the waste box, the top of the bottom support plate contacts the bottom of the separation plate, the circumferential surface of the end of the hydraulic rod I far from the transmission connecting rod contacts the inner wall of the hydraulic cylinder, the one-way rotating rod is located on the movement track of the L-shaped pressing plate, and a reset spring is arranged between the one-way rotating rod and the connecting sleeve. The deflection of the separation plate is realized through the bottom support plate, and the solid floating objects and liquid floating objects are separated and discharged respectively, and the oil that may be contained in the separated liquid discharge is reused.

[0014] The present invention provides a sewage treatment device for petrochemical production. It has the following beneficial effects: (1) In this invention, through the movement of the motor and the reciprocating groove rod to drive the bar-shaped scraper and the material collecting plate, the separation and collection of floating substances on the surface of sewage are realized. At the same time, the oil scraping plate, driven by the material collecting plate, realizes the scraping of the sticky liquid remaining on the surface of the material collecting plate, avoiding the secondary pollution of the treated sewage caused by the residual pollution formed on the surface of the material collecting plate, and improving the overall sewage treatment quality of the device.

[0015] (2) In this invention, through the bar-shaped scraper driving the mud scraping plate, the sediment deposited at the bottom of the sewage after standing is realized. At the same time, the mud scraping plate pushes the blocking door to indirectly discharge the scraped sediment from the sediment discharge port, avoiding the accumulation of sediment in the water tank and resulting in a reduction in treatment quality. The movement of the blocking door drives the stirring rod to rotate through a nylon rope, avoiding the blockage of the sewage discharge port caused by the accumulated sediment during long-term use, thus ensuring that the sediment can be discharged from the device in a timely manner and ensuring the treatment quality of the device during long-term operation as much as possible.

[0016] (3) In this invention, the material collecting plate realizes the pressing and separation treatment of the floating substances collected in the waste material box through the telescopic connecting rod and the hydraulic device. After separation, the liquid floating substances are discharged from the liquid sewage discharge port, and the solid floating substances are discharged from the solid sewage discharge port, realizing the separation of solid and liquid floating substances, so as to separately treat the liquid and solid floating substances. For example, the oil that may remain in the liquid floating substances can be recycled, and valuable items in the floating substances can be recycled without affecting the sewage treatment quality of the device. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the water tank of the present invention; Figure 3 It is a schematic diagram of the position structure of the sediment partition board and the blocking door of the present invention; Figure 4 It is a schematic diagram of the structure of the stirring rod and the nylon rope of the present invention; Figure 5 It is a schematic diagram of the internal structure of the waste material box of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the waste material box of the present invention; Figure 7 It is a schematic diagram of the internal structure of the hydraulic cylinder of the present invention.

[0018] In the figure: 1. Water tank; 2. Drain pipe; 3. Water inlet pipe; 4. Motor; 501. Current-limiting baffle; 502. Floating buoy; 503. Rope pulley; 504. Strip-shaped scraper; 505. Reciprocating groove rod; 506. Material collecting plate; 507. Oil scraping plate; 601. Mud scraping plate; 602. Telescopic push plate; 603. Sediment partition plate; 604. Blocking door; 605. Stirring rod; 606. Nylon rope; 701. Waste box; 702. Transmission connecting rod; 703. Hydraulic cylinder; 704. L-shaped pressing plate; 705. Separation plate; 706. Grooved rotating rod; 707. Connecting sleeve; 708. One-way rotating rod; 709. Bottom support plate. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-7 , a sewage treatment device for petrochemical production, including a water tank 1, a drain pipe 2 is fixedly installed at the front end of the water tank 1, a water inlet pipe 3 is fixedly installed at the rear end of the water tank 1, a motor 4 is fixedly installed at the rear end of the water tank 1, a current-limiting baffle 501 is rotatably installed at the rear part of the inner wall of the water tank 1, a rope pulley 503 is fixedly installed at the rear part of the inner wall of the water tank 1, a floating buoy 502 is fixedly connected to the front end of the bottom of the current-limiting baffle 501 through a hemp rope, an output end of the motor 4 is fixedly connected to a reciprocating groove rod 505, one end of the reciprocating groove rod 505 away from the motor 4 is rotatably installed at the top of the inner wall of the water tank 1 through a support, a strip-shaped scraper 504 is rotatably installed on the circumferential surface of the reciprocating groove rod 505, a material collecting plate 506 is rotatably installed at the front end of the inner wall of the water tank 1, a telescopic connecting rod is rotatably installed at the front end of the reciprocating rod support, and an oil scraping plate 507 is fixedly installed at one end of the telescopic connecting rod away from the reciprocating rod support. By driving the movement of the strip-shaped scraper 504 and the material collecting plate 506 by the motor 4 and the reciprocating groove rod 505, the floating objects on the surface of the sewage are separated and collected, and at the same time, the oil scraping plate 507 realizes the scraping of the adhesive liquid remaining on the surface of the material collecting plate 506 under the drive of the material collecting plate 506, avoiding the formation of residual pollution on the surface of the material collecting plate 506.

[0021] The hemp rope is in contact with the circumferential surface of the rope pulley 503, the reciprocating groove rod 505 rotates through the rear inner wall of the water tank 1, the strip-shaped scraper 504 is threadedly connected to the reciprocating groove rod 505, the bottom of the oil scraping plate 507 is in contact with the top of the material collecting plate 506, the material collecting plate 506 is located on the movement track of the strip-shaped scraper 504, and the spiral groove opened on the reciprocating groove rod 505 realizes the change of the movement direction of the strip-shaped scraper 504 while the rotation direction of the reciprocating groove rod 505 itself remains unchanged.

[0022] Inside the water tank 1, there is a sludge scraping device. The sludge scraping device includes a sludge scraping plate 601, a telescopic push plate 602, a sediment partition plate 603, and a blocking door 604. The sludge scraping plate 601 is fixedly connected to the strip-shaped scraping plate 504 through a fixed connecting rod. The telescopic push plate 602 is slidably installed at the front end of the top of the sludge scraping plate 601. The sediment partition plate 603 is fixedly installed at the bottom of the inner wall of the water tank 1. The blocking door 604 is rotatably installed at the rear of the sediment partition plate 603 through a rotating shaft. After the telescopic push plate 602 touches the blocking door 604, it slides backward to close the space between the sludge scraping plate 601 and the blocking door 604, thus preventing the treated sewage from being discharged together with the sediment from the sediment discharge port when discharging the sediment.

[0023] The sludge scraping device further includes a stirring rod 605 and a nylon rope 606. The stirring rod 605 is rotatably installed at the bottom of the water tank 1. The circumferential surface of the top of the stirring rod 605 is fixedly connected to the front end surface of the blocking door 604 through the nylon rope 606. The stirring rod 605 periodically dredges the sediment discharge port, preventing the sediment discharge port from being blocked due to long-term sediment discharge.

[0024] The blocking door 604 is located on the movement track of the telescopic push plate 602. The nylon rope 606 is wound around the circumferential surface of the top of the stirring rod 605. A sediment discharge port is provided at the front end of the water tank 1. A scroll spring is arranged between the stirring rod 605 and the bottom of the water tank 1. The elastic force of the scroll spring can timely close the blocking door 604, preventing the treated sewage from flowing out of the sediment discharge port.

[0025] A waste box 701 is fixedly installed at the front end of the water tank 1. A transmission connecting rod 702 is rotatably installed at the top of the material receiving plate 506. One end of the transmission connecting rod 702 away from the material receiving plate 506 is fixedly connected to a first hydraulic rod. A hydraulic cylinder 703 is fixedly installed at the top of the inner wall of the waste box 701. A second hydraulic rod is arranged inside the hydraulic cylinder 703. A L-shaped pressing plate 704 is fixedly installed at the bottom of the second hydraulic rod. A separating plate 705 is rotatably installed on the inner wall of the waste box 701. The pressing force of the L-shaped pressing plate 704 promotes the separation of solids and liquids in the floating matter, improving the overall treatment efficiency of the device.

[0026] A grooved rotating rod 706 is rotatably installed at the top of the inner wall of the waste box 701. A connecting sleeve 707 is slidably installed on the top of the inner wall of the waste box 701 through a sleeve connecting rod. A one-way rotating rod 708 is rotatably installed at the front end of the connecting sleeve 707. The bottom of the grooved rotating rod 706 is fixedly connected to a bottom supporting plate 709. The one-way rotating rod 708 realizes different transmissions by distinguishing the sliding directions of the L-shaped pressing plate 704 in different directions.

[0027] The circumferential surface of the grooved rotating rod 706 is provided with a special-shaped chute. The lower half of the special-shaped chute is spiral, and the upper half of the special-shaped chute is linear. A chute rod is fixedly installed at the rear of the connecting sleeve 707. One end of the chute rod away from the connecting sleeve 707 contacts the inner wall of the chute of the special-shaped chute. A triangular top block is slidably installed at the front end of the connecting sleeve 707. The bottom of the triangular top block contacts the top of the one-way rotating rod 708. A reset top rod is fixedly installed at the top of the inner wall of the waste bin 701. The reset top rod is located on the movement track of the triangular top block. The front end of the separation plate 705 is rotatably connected with a diversion plate. A liquid sewage outlet is opened at the rear of the bottom of the waste bin 701, and a solid sewage outlet is opened at the front of the bottom of the waste bin 701. The top of the bottom support plate 709 contacts the bottom of the separation plate 705. The circumferential surface of the end of the first hydraulic rod away from the transmission connecting rod 702 contacts the inner wall of the hydraulic cylinder 703. The one-way rotating rod 708 is located on the movement track of the L-shaped pressing plate 704. A reset spring is arranged between the one-way rotating rod 708 and the connecting sleeve 707. The deflection of the separation plate 705 is realized through the bottom support plate 709, so as to separate the solid floating objects and the liquid floating objects and discharge them respectively, and reuse the oil that may be contained in the separated liquid discharge.

[0028] During operation: When the device enters the working state, the sewage to be treated enters the water tank 1 through the water inlet pipe 3. As the sewage level in the water tank 1 continuously rises, its buoyancy drives the float 502 to move upward. When the sewage level in the water tank 1 reaches a certain height, the float 502 pulls the hemp rope to move together under the buoyancy of the sewage. After being pulled by the float 502, the hemp rope bypasses the rope pulley 503 and drives the flow-limiting baffle 501 to rotate downward, i.e., in the opposite direction to the float 502. After the flow-limiting baffle 501 rotates downward, it closes the water inlet pipe 3, so that the sewage level in the water tank 1 no longer rises, achieving that the sewage level in the water tank 1 always remains at the same height for subsequent treatment processes. Start the motor 4. The output end of the motor 4 drives the reciprocating groove rod 505 to rotate. Since the strip-shaped scraper 504 meshes with the threaded groove of the reciprocating groove rod 505, the rotation of the reciprocating groove rod 505 will drive the reciprocating sliding of the strip-shaped scraper 504. When the strip-shaped scraper 504 slides forward, it contacts the floating objects on the sewage surface and drives the floating objects to slide forward together, thus achieving the scraping of the floating objects on the sewage surface. When the strip-shaped scraper 504 continues to slide forward, it will scrape the floating objects to the top of the receiving plate 506. When the front end of the strip-shaped scraper 504 contacts the bottom of the receiving plate 506, the sliding of the strip-shaped scraper 504 drives the receiving plate 506 to rotate upward. The rotation of the receiving plate 506 will drive the floating objects scraped to its top to move together, thus achieving the collection of the floating objects on the liquid surface after scraping. Since the oil scraping plate 507 is rotationally connected to the front end of the reciprocating rod support through a telescopic connecting rod, the rotation of the receiving plate 506 drives the oil scraping plate 507 in contact with its top to slide along the top of the receiving plate 506. The sliding of the oil scraping plate 507 drives the adhesive liquid attached to the top of the receiving plate 506 to move together through contact, thus achieving the scraping of the adhesive liquid on the top of the receiving plate 506. When the motor 4 continuously drives the reciprocating groove rod 505 to rotate, after the strip-shaped scraper 504 slides forward to the top, it will slide backward along the spiral groove in the opposite direction on the circumferential surface of the reciprocating groove rod 505. After the strip-shaped scraper 504 slides backward, it disengages from the contact with the receiving plate 506, and the receiving plate 506 rotates downward under the action of gravity to return to the initial position.

[0029] While the strip-shaped scraper 504 moves forward, it drives the sludge scraping plate 601 to slide forward together through the fixed connecting rod. The sliding of the sludge scraping plate 601 drives the sediment deposited at the bottom of the water tank 1 to slide forward together by contacting it, thus realizing the scraping of the sediment at the bottom of the water tank 1. At the same time, the sliding of the sludge scraping plate 601 drives the telescopic push plate 602 slidably installed at the front end of its top to slide forward together. The sludge scraping plate 601 continuously slides forward. When the front end of the telescopic push plate 602 contacts the rear end of the blocking door 604, the telescopic push plate 602 pushes the blocking door 604 to rotate. After the rotation of the blocking door 604, the sediment discharge port is opened, so that the scraped sediment can be discharged from the sediment discharge port from the water tank 1 in time, avoiding the accumulation of sediment at the bottom all the time. At the same time, since the circumferential surface of the top of the stirring rod 605 is fixedly connected to the front end surface of the blocking door 604 through the nylon rope 606 and the nylon rope 606 surrounds the circumferential surface of the top of the stirring rod 605 for one week, the rotation of the blocking door 604 drives the stirring rod 605 to rotate through the nylon rope 606. The rotation of the stirring rod 605 avoids the blockage of the sediment discharge port caused by the long-term use of the device, improving the stability of the long-term operation of the device. The treated sewage is discharged from the water tank 1 through the drain pipe 2.

[0030] When the material receiving plate 506 rotates together with the floating objects, the floating objects will slide on the surface of the material receiving plate 506 under the action of gravity, thus entering the waste box 701 and staying on the top of the separation plate 705. At the same time, the rotation of the material receiving plate 506 drives the transmission connecting rod 702 rotatably connected thereto to rotate together. Since the circumferential surface of the end of the first hydraulic rod away from the transmission connecting rod 702 contacts the inner wall of the hydraulic cylinder 703, the rotation of the transmission connecting rod 702 pushes the first hydraulic rod to slide forward. The sliding of the first hydraulic rod drives the second hydraulic rod to slide downward by squeezing the hydraulic oil inside the hydraulic cylinder 703. The sliding of the second hydraulic rod pushes the L-shaped pressing plate 704 to slide downward together. When the L-shaped pressing plate 704 slides downward, its bottom will contact the top of the one-way rotating rod 708. However, since the one-way rotating rod 708 can rotate downward, the sliding of the L-shaped pressing plate 704 will drive it to rotate downward by contacting the one-way rotating rod 708. After the L-shaped pressing plate 704 continues to slide downward and disengages from the one-way rotating rod 708, the one-way rotating rod 708 rebounds to its initial position under the elastic force of the return spring. At the same time, the downward sliding of the L-shaped pressing plate 704 promotes the separation of solids and liquids in the floating objects by contacting and squeezing the floating objects staying on the top of the separation plate 705. After the separation of liquids and solids, the liquids can pass through the separation plate 705 and flow out from the bottom liquid sewage outlet. When the material receiving plate 506 rotates downward under the action of gravity, it drives the second hydraulic rod and the L-shaped pressing plate 704 to slide upward through the transmission connecting rod 702 and the first hydraulic rod. When the L-shaped pressing plate 704 slides upward, its top will contact the bottom of the one-way rotating rod 708. And because the triangular top block is located above the one-way rotating rod 708 and contacts it, the one-way rotating rod 708 cannot rotate upward. Therefore, when the L-shaped pressing plate 704 slides upward, it will drive the one-way rotating rod 708 to slide upward together. When the one-way rotating rod 708 slides upward, it drives the connecting sleeve 707 to slide together. Since the chute rod at the rear of the connecting sleeve 707 contacts the inner wall of the special-shaped chute of the slotted rotating rod 706, and the lower half of the special-shaped chute is spiral, the upward sliding of the connecting sleeve 707 will drive the slotted rotating rod 706 to rotate. The rotation of the slotted rotating rod 706 drives the bottom support plate 709 fixedly connected to its bottom to rotate. After the bottom support plate 709 rotates, its top disengages from the bottom of the separation plate 705, and the separation plate 705 deflects downward under the action of gravity. After the separation plate 705 deflects, the solid floating objects remaining on its top surface will be discharged from the solid sewage outlet under the action of gravity. Thus, the separation treatment of solids and liquids in the floating objects is realized.The L-shaped pressing plate 704 continues to drive the connecting sleeve 707 to slide upward. Since the upper half of the special-shaped chute of the grooved rotating rod 706 is linear, the connecting sleeve 707 will not drive the grooved rotating rod 706 to rotate when it continues to slide upward. However, when the inclined surface of the triangular top block contacts the bottom of the reset ejector rod, the triangular top block slides upward and backward under the drive of the connecting sleeve 707. After the triangular top block slides backward, its bottom disengages from the one-way rotating rod 708 and enables the one-way rotating rod 708 to rotate upward. After the one-way rotating rod 708 rotates upward, its bottom disengages from the top of the L-shaped pressing plate 704. After the disengagement, the one-way rotating rod 708 and the connecting sleeve 707 slide downward under the action of gravity to return to the initial position. The downward sliding of the connecting sleeve 707 drives the grooved rotating rod 706 to rotate in the opposite direction to before and return to the initial position. The rotation of the grooved rotating rod 706 drives the bottom support plate 709 to rotate. The rotation of the bottom support plate 709 drives the separation plate 705 to rotate upward through the contact between its top and the bottom of the separation plate 705 to return it to the initial position.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A petrochemical production sewage treatment device, comprising a water tank, characterized in that: A drain pipe is fixedly installed at the front end of the water tank, a water inlet pipe is fixedly installed at the rear end of the water tank, a motor is fixedly installed at the rear end of the water tank, a current-limiting baffle is rotatably installed at the rear part of the inner wall of the water tank, a rope pulley is fixedly installed at the rear part of the inner wall of the water tank, a floating buoy is fixedly connected to the front end of the bottom of the current-limiting baffle through a hemp rope, an output end of the motor is fixedly connected to a reciprocating groove rod, one end of the reciprocating groove rod away from the motor is rotatably installed at the top of the inner wall of the water tank through a support, a strip-shaped scraper is rotatably installed on the circumferential surface of the reciprocating groove rod, a material collecting plate is rotatably installed at the front end of the inner wall of the water tank, a telescopic connecting rod is rotatably installed at the front end of the reciprocating rod support, and an oil scraping plate is fixedly installed at one end of the telescopic connecting rod away from the reciprocating rod support.

2. The sewage treatment device for petrochemical production according to claim 1, wherein: The hemp rope contacts the circumferential surface of the rope pulley, the reciprocating groove rod rotates through the rear inner wall of the water tank, the strip-shaped scraper is threadedly connected to the reciprocating groove rod, the bottom of the oil scraping plate contacts the top of the material collecting plate, and the material collecting plate is located on the movement track of the strip-shaped scraper.

3. The sewage treatment device for petrochemical production according to claim 2, wherein: A mud scraping device is arranged inside the water tank. The mud scraping device includes a mud scraping plate, a telescopic push plate, a sediment partition plate and a blocking door. The mud scraping plate is fixedly connected to the strip-shaped scraper through a fixed connecting rod. The telescopic push plate is slidably installed at the front end of the top of the mud scraping plate. The sediment partition plate is fixedly installed at the bottom of the inner wall of the water tank. The blocking door is rotatably installed at the rear of the sediment partition plate through a rotating shaft.

4. A petrochemical production sewage treatment device according to claim 3, characterized in that: The mud scraping device further includes a stirring rod and a nylon rope. The stirring rod is rotatably installed at the bottom of the water tank. The front end surface of the blocking door is fixedly connected to the circumferential surface of the top of the stirring rod through the nylon rope.

5. The sewage treatment device for petrochemical production according to claim 4, characterized in that: The blocking door is located on the movement track of the telescopic push plate. The nylon rope is wound around the circumferential surface of the top of the stirring rod. A sediment discharge port is formed at the front end of the water tank. A volute spring is arranged between the stirring rod and the bottom of the water tank.

6. The sewage treatment device for petrochemical production according to claim 5, characterized in that: A waste box is fixedly installed at the front end of the water tank. A transmission connecting rod is rotatably installed at the top of the material collecting plate. One end of the transmission connecting rod away from the material collecting plate is fixedly connected to a hydraulic rod I. A hydraulic cylinder is fixedly installed at the top of the inner wall of the waste box. A hydraulic rod II is arranged inside the hydraulic cylinder. An L-shaped pressing plate is fixedly installed at the bottom of the hydraulic rod II. A separation plate is rotatably installed on the inner wall of the waste box.

7. The sewage treatment device for petrochemical production according to claim 6, characterized in that: A grooved rotating rod is rotatably installed at the top of the inner wall of the waste box. A connecting sleeve is slidably installed on the top of the inner wall of the waste box through a sleeve connecting rod. A one-way rotating rod is rotatably installed at the front end of the connecting sleeve. A bottom supporting plate is fixedly connected to the bottom of the grooved rotating rod.

8. An oil and chemical production sewage treatment device according to claim 7, characterized in that: The circumferential surface of the grooved rotating rod is provided with a special-shaped chute. The lower half of the special-shaped chute is spiral, and the upper half of the special-shaped chute is linear. A chute rod is fixedly installed at the rear of the connecting sleeve. One end of the chute rod away from the connecting sleeve contacts the inner wall of the chute of the special-shaped chute. A triangular top block is slidably installed at the front end of the connecting sleeve. The bottom of the triangular top block contacts the top of the one-way rotating rod. A reset top rod is fixedly installed at the top of the inner wall of the waste bin. The reset top rod is located on the movement track of the triangular top block. The front end of the separation plate is rotatably connected with a diversion plate. A liquid sewage outlet is opened at the rear of the bottom of the waste bin, and a solid sewage outlet is opened at the front of the bottom of the waste bin. The top of the bottom support plate contacts the bottom of the separation plate. The circumferential surface of the end of the hydraulic rod 1 away from the transmission connecting rod contacts the inner wall of the hydraulic cylinder. The one-way rotating rod is located on the movement track of the L-shaped pressing plate. A reset spring is arranged between the one-way rotating rod and the connecting sleeve.

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