Water treatment device for degreasing agent production water

Abstract

The utility model relates to the technical field of water treatment, in particular to a water treatment device for degreasing agent production water. Comprising a treatment box and an oil stain pre-removal mechanism, the treatment box is at least provided with a pre-sedimentation tank and a flocculation sedimentation tank, a communicating pipe is arranged between the pre-sedimentation tank and the flocculation sedimentation tank, and the oil stain pre-removal mechanism is installed above the pre-sedimentation tank. The greasy dirt pre-removing mechanism comprises a mounting frame, a hollow condensing roller rotationally mounted on the mounting frame and a scraping mechanism for cleaning greasy dirt on the outer wall of the hollow condensing roller, the bottom of the hollow condensing roller extends below the liquid level in the pre-sedimentation tank, and first rotary sealing joints are mounted at the two ends of the hollow condensing roller; and a driving mechanism for providing power for rotation of the hollow condensing rollers is mounted on the treatment box. Oil drops in sewage can be effectively removed, the sewage treatment capacity and the oil stain removal effect are improved, and more energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a water treatment device for degreasing agent production water. Background Art

[0002] As we all know, degreasers are chemical substances that can dissolve organic substances such as fats and greases. The degreaser production process produces a large amount of wastewater, and the wastewater contains a large amount of oil, which will have an impact on subsequent sewage treatment equipment. Gravity separation or centrifugal separation is often used to pre-remove oil droplets in the sewage.

[0003] For example, Chinese invention patent CN114590869B discloses a centrifugal separation treatment device for oily wastewater, which includes a motor and a truncated cone ring plate. The truncated cone and the middle of the plate are connected to a hollow tube for rotation. Centrifugal blades for stirring water flow are fixed on the side wall of the hollow tube. A dome-shaped diverter plate is fixed on the upper inner wall of the truncated cone ring plate. A through hole for oil discharge is opened in the center of the diverter plate. A liquid injection pipe is provided just above the hollow tube. A cleaning device is also provided on the truncated cone ring plate. The cleaning device absorbs the precipitated gravel and transports it out of the truncated cone ring plate. It can quickly remove gravel and oil and water from petroleum wastewater.

[0004] However, the following defects were found: the energy consumption for removing oil from sewage by centrifugal separation is large, the sewage treatment volume is small, and the oil droplet removal rate needs to be further improved. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a water treatment device for degreasing agent production water which can effectively remove oil droplets in sewage, improve sewage treatment capacity and oil pollution removal effect, and is more energy-efficient.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water treatment device for degreasing agent production water, comprising a treatment box and an oil pre-removal mechanism, the treatment box is provided with at least a pre-sedimentation tank and a flocculation sedimentation tank, a connecting pipe is provided between the pre-sedimentation tank and the flocculation sedimentation tank, the oil pre-removal mechanism is installed above the pre-sedimentation tank, the oil pre-removal mechanism comprises a mounting frame, a hollow condensation roller rotatably mounted on the mounting frame, and a scraping mechanism for cleaning the oil on the outer wall of the hollow condensation roller, the bottom of the hollow condensation roller extends below the liquid level in the pre-sedimentation tank, and both ends of the hollow condensation roller are provided with a first rotating sealing joint; a driving mechanism for providing power for the rotation of the hollow condensation roller is installed on the treatment box; further, the first rotating sealing joint is connected to an external refrigerant source; the refrigerant can be low-temperature water or other low-temperature refrigerants; the driving mechanism comprises a motor and a transmission belt, and the output end of the motor is connected to the hollow condensation roller through a transmission belt.

[0007] Preferably, the scraping mechanism includes a scraper mounted on a mounting frame, the blade of the scraper contacts the lower middle portion of the hollow condensation roller, and the end of the scraper away from the hollow condensation roller is arranged obliquely downward toward the outside of the processing box; further, a discharge port is provided between the mounting frame and the processing box to allow oil to be discharged.

[0008] Preferably, the scraper is rotatably mounted on a mounting frame, an adjustment handle is fixedly mounted on the end of the scraper, an elastic adjustment component is installed on the mounting frame, the elastic adjustment component includes a shaft rod rotatably mounted on the mounting frame, a driving rod vertically arranged and fixedly connected to the shaft rod, a spring sleeved on the driving rod and an adjusting nut screwed on the end of the driving rod, a through hole is provided on the adjusting handle, the shaft rod passes through the through hole, one end of the spring abuts against the adjusting nut, and the other end of the spring abuts against the adjusting handle.

[0009] Preferably, a hollow medicine distribution shaft is rotatably installed in the lower middle part of the pre-sedimentation tank, a plurality of medicine distribution holes are provided on the hollow medicine distribution shaft, a second rotary sealing joint is rotatably installed on the end of the hollow medicine distribution shaft, a stirring paddle is installed on the hollow medicine distribution shaft, a reducer is fixedly installed on the processing box, the output end of the reducer is transmission-connected to the hollow medicine distribution shaft, and the input end of the reducer is transmission-connected to the hollow condensation roller; further, the input shaft of the reducer is transmission-connected to the hollow condensation roller via a synchronous belt.

[0010] Preferably, an oil separator box is installed in the flocculation sedimentation tank near the output end of the connecting pipe, and a serrated overflow weir plate is provided on the oil separator box.

[0011] Preferably, the top of the overflow weir plate is at least 2 cm higher than the bottom of the hollow condensing roller.

[0012] Preferably, the input end of the connecting pipe extends below the liquid level in the pre-sedimentation tank.

[0013] Preferably, an inclined tube filler is installed in the flocculation sedimentation tank.

[0014] Compared with the prior art, the utility model provides a water treatment device for degreasing agent production water, which has the following beneficial effects:

[0015] In the water treatment device for degreasing agent production water, oily sewage enters the pre-sedimentation tank for static sedimentation, and some oil droplets float on the upper part of the liquid surface in the pre-sedimentation tank, and the external refrigerant is injected into the hollow condensation roller through one of the first rotary sealing joints and discharged from the other first rotary sealing joint. Due to the effect of the refrigerant, the temperature of the outer wall of the hollow condensation roller is reduced, and the driving mechanism drives the hollow condensation roller to rotate. The oil droplets in contact with the outer wall of the hollow condensation roller have reduced fluidity and gradually flocculate under the action of low temperature. The adhesion of the flocculated oil droplets increases, and the flocculated oil droplets adhere to the outer wall of the hollow condensation roller. The oil droplets are scraped and discharged by the scraping mechanism, so as to achieve the removal of the floating oil droplets on the upper part of the pre-sedimentation tank, improve the sewage treatment capacity and the oil droplet removal effect, and save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the top plan structure of the utility model.

[0018] Figure 3 yes Figure 1 A partial enlarged view of point A in the middle.

[0019] Figure 4 The utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0020] Figure 5 The utility model Figure 2 Schematic diagram of the cross-sectional structure at BB in the middle.

[0021] Figure 6 The utility model Figure 1 Schematic diagram of the local enlarged structure at point D in the middle.

[0022] Markings in the attached drawings: 1. treatment box; 2. pre-sedimentation tank; 3. flocculation sedimentation tank; 4. connecting pipe; 5. mounting frame; 6. hollow condensation roller; 7. first rotary sealing joint; 8. driving mechanism; 9. scraper; 10. adjustment handle; 11. shaft; 12. driving rod; 13. spring; 14. adjusting nut; 15. hollow medicine distribution shaft; 16. medicine distribution hole; 17. second rotary sealing joint; 18. stirring paddle; 19. reducer; 20. oil separator; 21. overflow weir plate; 22. inclined tube filler. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] Example 1

[0027] Please refer to Figures 1 to 3 A water treatment device for degreasing agent production water includes a treatment box 1 and an oil pre-removal mechanism. The treatment box 1 is provided with at least a pre-sedimentation tank 2 and a flocculation sedimentation tank 3. A connecting pipe 4 is provided between the pre-sedimentation tank 2 and the flocculation sedimentation tank 3. The oil pre-removal mechanism is installed above the pre-sedimentation tank 2. The oil pre-removal mechanism includes a mounting frame 5, a hollow condensation roller 6 rotatably mounted on the mounting frame 5, and a scraping mechanism for cleaning the oil on the outer wall of the hollow condensation roller 6. The bottom of the hollow condensation roller 6 extends below the liquid level in the pre-sedimentation tank 2.

[0028] Both ends of the hollow condensing roller 6 are equipped with a first rotary sealing joint 7; the processing box 1 is equipped with a driving mechanism 8 that provides power for the rotation of the hollow condensing roller 6. The first rotary sealing joint 7 is connected to an external refrigerant source; the refrigerant can be low-temperature water or other low-temperature refrigerants; the driving mechanism 8 includes a motor and a transmission belt, and the output end of the motor is connected to the hollow condensing roller 6 through the transmission belt; it should be noted that the outer wall temperature of the hollow condensing roller 6 should be maintained between 0-15°C. When it is lower than 0°C, ice will form at the hollow condensing roller 6, and below 15°C, oil droplets will flocculate, which is conducive to the adhesion of oil droplets to the hollow condensing roller 6.

[0029] Please refer to Figure 4 The scraping mechanism includes a scraper 9 installed on the mounting frame 5, the blade of the scraper 9 is in contact with the middle and lower part of the hollow condensation roller 6, and the end of the scraper 9 away from the hollow condensation roller 6 is arranged obliquely downward to the outside of the processing box 1; further, a discharge port is provided between the mounting frame 5 and the processing box 1 to allow the discharge of oil and dirt.

[0030] Please refer to Figure 6The scraper 9 is rotatably mounted on the mounting frame 5, an adjusting handle 10 is fixedly mounted on the end of the scraper 9, an elastic adjustment component is installed on the mounting frame 5, and the elastic adjustment component includes a shaft rod 11 rotatably mounted on the mounting frame 5, a driving rod 12 vertically arranged and fixedly connected to the shaft rod 11, a spring 13 sleeved on the driving rod 12 and an adjusting nut 14 screwed on the end of the driving rod 12, a through hole is provided on the adjusting handle 10, the shaft rod 11 passes through the through hole, one end of the spring 13 abuts against the adjusting nut 14, and the other end of the spring 13 abuts against the adjusting handle 10.

[0031] The water treatment device for degreasing agent production water provided in the present embodiment has the following characteristics: during the rotation of the hollow condensation roller 6, the scraper 9 scrapes off the flocculated oil droplets attached to the outer wall of the hollow condensation roller 6 and discharges the oil droplets through the discharge port. The elastic force of the spring 13 can be adjusted by rotating the adjusting nut 14. After the adjustment handle 10 is driven, the contact tightness between the scraper 9 and the outer wall of the hollow condensation roller 6 can be appropriately adjusted to ensure that the scraper 9 scrapes off the flocculated oil droplets attached to the outer wall of the hollow condensation roller 6 while avoiding interference of the scraper 9 with the rotation of the hollow condensation roller 6, thereby reducing the rotation resistance of the hollow condensation roller 6.

[0032] Example 2

[0033] The water treatment device for degreasing agent production water provided in Example 1 is further optimized. For details, please refer to Figure 5 A hollow medicine distribution shaft 15 is rotatably installed in the middle and lower part of the pre-sedimentation tank 2, and a plurality of medicine distribution holes 16 are provided on the hollow medicine distribution shaft 15. A second rotary sealing joint 17 is rotatably installed on the end of the hollow medicine distribution shaft 15, and a stirring paddle 18 is installed on the hollow medicine distribution shaft 15. A reducer 19 is fixedly installed on the treatment box 1, and the output end of the reducer 19 is transmission-connected to the hollow medicine distribution shaft 15, and the input end of the reducer 19 is transmission-connected to the hollow condensation roller 6; further, the input shaft of the reducer 19 is transmission-connected to the hollow condensation roller 6 via a synchronous belt; it should be noted that the rotation speed of the hollow medicine distribution shaft 15 should be lower than 30 rpm to avoid the stirring paddle 18 rotating too fast and affecting the sedimentation of sewage in the pre-sedimentation tank 2.

[0034] For further information, please refer to Figure 2 , 4 , an inclined tube filler 22 is installed in the flocculation sedimentation tank 3. An oil separator 20 is installed near the output end of the connecting pipe 4 in the flocculation sedimentation tank 3, and a serrated overflow weir plate 21 is provided on the oil separator 20. The top of the overflow weir plate 21 is at least 2 cm higher than the bottom of the hollow condensation roller 6; that is, the bottom of the hollow condensation roller 6 is at least immersed to 2 cm below the water surface, so as to ensure that the oil droplets floating on the upper part of the pre-sedimentation tank 2 are in contact with the outer wall of the hollow condensation roller 6.

[0035] The water treatment device for degreasing agent production water provided in this embodiment connects the second rotary seal joint 17 with the external flocculant dosing equipment, and the flocculant enters the hollow medicine distribution shaft 15 through the second rotary seal joint 17 and flows out through the medicine distribution hole 16. During this process, the reducer 19 drives the hollow medicine distribution shaft 15 to rotate slowly, and the flocculant is dispersed into the pre-sedimentation tank 2. Under the stirring action of the stirring paddle 18, the flocculant further contacts with the sewage evenly, and under the action of the flocculant, the suspended matter, residual oil droplets and other organic matter in the water can be further flocculated and settled, and the initially treated clean water It flows into the oil separator 20 through the connecting pipe 4, and the input end of the connecting pipe 4 is immersed below the liquid level in the pre-sedimentation tank 2. The oil drops floating on the liquid surface are not easy to enter the oil separator 20. Under the action of the overflow weir plate 21, the oil droplets floating on the upper part of the oil separator 20 are further isolated to reduce the oil droplets entering the flocculation sedimentation tank 3; and the inclined tube filler 22 has a large specific surface area and porosity, which can effectively remove mud and sand particles, suspended matter and organic matter in the water, and effectively treat the flocculants in the sewage, further reducing the impact of oil droplets and other organic matter in the sewage on subsequent water treatment equipment.

[0036] The use process of the water treatment device for degreasing agent production water provided by the utility model is as follows: the oily sewage enters the pre-sedimentation tank 2 for static sedimentation, and some oil droplets float on the upper liquid surface in the pre-sedimentation tank 2, and the external refrigerant is injected into the hollow condensation roller 6 through one of the first rotary sealing joints 7 and discharged from the other first rotary sealing joint 7. Due to the effect of the refrigerant, the temperature of the outer wall of the hollow condensation roller 6 is reduced, and the driving mechanism 8 drives the hollow condensation roller 6 to rotate. The oil droplets in contact with the outer wall of the hollow condensation roller 6 have reduced fluidity under the action of low temperature and gradually flocculate. The adhesion of the flocculated oil droplets increases, and the flocculated oil droplets adhere to the At the outer wall of the hollow condensing roller 6, the oil droplets are scraped out by a scraping mechanism, and at the same time, the flocculant is injected into the hollow medicine dispensing shaft 15 through the second rotary sealing joint 17. Under the action of the flocculant, the suspended matter, residual oil droplets and other organic matter in the water can be further flocculated and settled. The preliminarily treated clean water flows into the oil separator 20 through the connecting pipe 4 and enters the flocculation sedimentation tank 3 after the secondary oil scraping treatment of the overflow weir plate 21 on the oil separator 20. Under the action of the inclined tube filler 22, the suspended matter in the sewage is fully flocculated and settled, and the sewage after the preliminarily treatment can enter the subsequent sewage treatment equipment.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A water treatment device for degreasing agent production water, characterized in that: The invention comprises a treatment box (1) and an oil-contamination pre-removal mechanism, wherein the treatment box (1) is provided with at least a pre-sedimentation tank (2) and a flocculation sedimentation tank (3), a connecting pipe (4) is provided between the pre-sedimentation tank (2) and the flocculation sedimentation tank (3), the oil-contamination pre-removal mechanism is installed above the pre-sedimentation tank (2), the oil-contamination pre-removal mechanism comprises a mounting frame (5), a hollow condensation roller (6) rotatably mounted on the mounting frame (5), and a scraping mechanism for cleaning the oil-contamination on the outer wall of the hollow condensation roller (6), the bottom of the hollow condensation roller (6) extends below the liquid level in the pre-sedimentation tank (2), and first rotary sealing joints (7) are installed at both ends of the hollow condensation roller (6); a driving mechanism (8) for providing power for the rotation of the hollow condensation roller (6) is installed on the treatment box (1).

2. The water treatment device for degreasing agent production water according to claim 1, characterized in that: The scraping mechanism comprises a scraper (9) mounted on a mounting frame (5), the blade of the scraper (9) being in contact with the middle and lower part of the hollow condensation roller (6), and the end of the scraper (9) away from the hollow condensation roller (6) being arranged tilted downward toward the outside of the processing box (1).

3. The water treatment device for degreasing agent production water according to claim 2, characterized in that: The scraper (9) is rotatably mounted on the mounting frame (5); an adjustment handle (10) is fixedly mounted on the end of the scraper (9); an elastic adjustment component is mounted on the mounting frame (5); the elastic adjustment component comprises a shaft (11) rotatably mounted on the mounting frame (5); a driving rod (12) arranged perpendicularly to and fixedly connected to the shaft (11); a spring (13) sleeved on the driving rod (12); and an adjustment nut (14) screwed on the end of the driving rod (12); a through hole is provided on the adjustment handle (10); the shaft (11) passes through the through hole; one end of the spring (13) abuts against the adjustment nut (14); and the other end of the spring (13) abuts against the adjustment handle (10).

4. The water treatment device for degreasing agent production water according to claim 1, characterized in that: A hollow medicine dispensing shaft (15) is rotatably mounted in the middle and lower part of the pre-sedimentation tank (2); a plurality of medicine dispensing holes (16) are provided on the hollow medicine dispensing shaft (15); a second rotary sealing joint (17) is rotatably mounted on the end of the hollow medicine dispensing shaft (15); a stirring paddle (18) is mounted on the hollow medicine dispensing shaft (15); a reducer (19) is fixedly mounted on the treatment box (1); an output end of the reducer (19) is transmission-connected to the hollow medicine dispensing shaft (15); and an input end of the reducer (19) is transmission-connected to the hollow condensation roller (6).

5. The water treatment device for degreasing agent production water according to claim 1, characterized in that: An oil separator box (20) is installed in the flocculation sedimentation tank (3) near the output end of the connecting pipe (4), and a sawtooth overflow weir plate (21) is provided on the oil separator box (20).

6. The water treatment device for degreasing agent production water according to claim 5, characterized in that: The top of the overflow weir plate (21) is at least 2 cm higher than the bottom of the hollow condensing roller (6).

7. The water treatment device for degreasing agent production water according to claim 1 or 5, characterized in that: The input end of the connecting pipe (4) extends below the liquid surface in the pre-sedimentation tank (2).

8. The water treatment device for degreasing agent production water according to claim 1, characterized in that: An inclined tube filler (22) is installed in the flocculation sedimentation tank (3).

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