Polyether polyol production wastewater treatment device

Abstract

The invention discloses a polyether polyol production wastewater treatment device, and relates to the technical field of wastewater treatment, the polyether polyol production wastewater treatment device comprises two grids and two sealed cabins, each sealed cabin comprises a first cover body, a second cover body and a shell, the second shell is provided with a crushing mechanism, the grids are provided with cleaning mechanisms, and the cleaning mechanisms are provided with cleaning mechanisms. A collecting mechanism is arranged under the cleaning mechanism. And the cleaning mechanism comprises a water conveying pipe and two cleaning brushes, the two grids are arranged on the outer walls of the opposite sides of the two first cover bodies, and two sets of first tooth rollers are arranged on the outer walls of one sides of the first cover bodies through bearings. The polyether polyol production wastewater treatment device disclosed by the invention has the effect of improving the self-cleaning capability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, in particular to a polyether polyol production wastewater treatment device. Background Art

[0002] The wastewater treatment process for polyether polyol production is as follows: first, large suspended solids are removed through screen filtration, then the wastewater enters the regulating tank to balance water quality and quantity, and then passes through the grease trap to separate floating oil; then, coagulation and sedimentation (with the addition of PAC / PAM) are used to remove colloids and fine suspended solids, and the pH is adjusted to neutral; the pretreated wastewater enters the hydrolysis and acidification tank to improve biodegradability, and then undergoes UASB (anaerobic) and SBR (aerobic) biochemical treatment to degrade organic matter; finally, ozone oxidation or activated carbon adsorption is used to deeply treat difficult-to-degrade pollutants, and membrane filtration is combined when necessary to ensure that the effluent meets discharge standards.

[0003] In the prior art, patent document No. 201210051329.1 discloses a pentaerythritol production wastewater treatment device, which consists of a grille trough, a mechanical grille, a grease trap, a regulating tank, a combined flotation, an aerated micro-electrolysis system (including: an acid regulating tank, a micro-electrolysis reaction tank, a neutralization and coagulation reaction tank, a sedimentation tank, an intermediate water tank), a high-efficiency anaerobic reactor, an improved SBR reaction tank, a water collection tank, an aerated biological filter, a monitoring tank, a recycled water tank, and a matching acid dosing system, alkali dosing system, PAC dosing system, PAM dosing system, a sludge tank, a sludge filter press system, and a blower.

[0004] However, in the pretreatment stage of traditional polyether polyol production wastewater treatment equipment, although the mechanical screen can intercept large particles of impurities, its self-cleaning structure has obvious defects. The polyether agglomerates and fibrous materials in the wastewater are easily entangled on the cleaning brush head, and the existing self-cleaning structure can only clean the rake teeth part and cannot effectively clean the brush head itself, which easily leads to a decrease in the cleaning efficiency of the brush head.

[0005] For example, when treating wastewater containing diatomaceous earth catalyst carriers or packaging material debris, these substances will be tightly wrapped around the bristles, forming a stubborn layer of dirt, resulting in reduced cleaning efficiency of the brush head, increased motor load, and the need for manual cleaning 2-3 times a week, seriously affecting treatment efficiency and increasing maintenance costs. Summary of the Invention

[0006] The present invention discloses a polyether polyol production wastewater treatment device, which aims to solve the technical problem in the pretreatment link that although the mechanical grille can intercept large particles of impurities, its self-cleaning structure has obvious defects. Polyether agglomerates, fiber materials, etc. in the wastewater are easily entangled on the cleaning brush head, and the existing self-cleaning structure can only clean the rake teeth part and cannot effectively clean the brush head itself, which easily leads to a decrease in the cleaning efficiency of the brush head.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A polyether polyol production wastewater treatment device includes two grids and two sealed cabins, the sealed cabins including a first cover, a second cover, and a shell, the second shell is provided with a crushing mechanism, the grids are provided with a cleaning mechanism, and a collection mechanism is provided directly below the cleaning mechanism;

[0009] The cleaning mechanism includes a water pipe and two cleaning brushes. The two grilles are arranged on the outer walls of the two first cover bodies on opposite sides. Two groups of first tooth rollers are arranged on the outer wall of one side of the first cover body through bearings. The outer walls of each group of first tooth rollers are meshed with a first tooth chain, wherein the outer walls of the two first tooth rollers are meshed with a fourth tooth chain, one end of one of the first tooth rollers is externally connected to a first motor, and the first tooth chain is provided with a number of cleaning rakes arranged at equal distances. The two cleaning brushes are arranged on the outer walls of the two first cover bodies on opposite sides through bearings, and a drive assembly is provided at one end of the cleaning brush.

[0010] In this case, by setting up a double-grid structure, impurities of different particle sizes can be filtered in grades to improve filtration efficiency. The crushing mechanism can pre-process large-particle impurities to reduce the burden of subsequent processing. The cooperation between the cleaning mechanism and the collection mechanism realizes automatic cleaning and impurity collection, reducing manual maintenance. The driving component drives the two cleaning brushes to rotate relative to each other to ensure the cleanliness of the cleaning rake surface and the cleaning brush itself.

[0011] In a preferred embodiment, the collection mechanism includes a collection tube, which is arranged on the outer wall of the two first cover bodies on the opposite side. A round rod is arranged on the outer wall of one side of the first shell through a bearing, and spiral blades are arranged on the circumferential outer wall of the round rod. One end of the round rod is externally connected to a third motor, and an auxiliary cover is arranged on the inner wall of the collection tube.

[0012] In this solution, the collection tube collects the removed impurities in a centralized manner to avoid secondary pollution. The spiral blades realize automatic transportation of impurities to reduce the risk of blockage. The auxiliary cover can effectively guide impurities into the collection tube to improve the collection effect.

[0013] In a preferred solution, two collecting ports and a plurality of equally spaced slots are provided on the top outer wall of the auxiliary cover, and the slots are in a wavy structure.

[0014] In this solution, a double collection port design is adopted to expand the collection range. Generally, solid impurities can flow directly into the bottom and be transported out through the spiral blades. The wavy slot is conducive to guiding and intercepting fiber impurities, and with the help of the conveying capacity of the spiral blades, the fiber impurities can be easily taken away.

[0015] In a preferred embodiment, the crushing mechanism includes two groups of second assembly rods, which are arranged on the outer walls of the two second cover bodies on opposite sides, and a third tooth roller is provided at one end of the second assembly rod. A plurality of blades arranged at equal distances are provided on the circumferential outer wall of the second assembly rod. Both groups of the third tooth rollers are engaged with a third tooth chain, wherein one end of the two third tooth rollers is externally connected to a fourth motor, and a stirring assembly is provided on the outer walls of the two second cover bodies on opposite sides.

[0016] In this solution, the synchronous transmission mechanism of the third tooth roller and the third tooth chain can ensure that the two sets of blades can achieve precise and synchronous relative operation, thereby building a stable and reliable crushing chamber, and the equidistantly arranged blades cooperate with each other to form a continuous and complete cutting surface, so that large particles of impurities can be evenly subjected to the cutting force after entering the cutting area, thereby achieving an efficient and uniform crushing effect, thereby greatly optimizing the processing effect of the subsequent filtration process and creating favorable conditions for the complete removal of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a polyether polyol production wastewater treatment device proposed in the present invention.

[0018] Figure 2 This is a partial structural schematic diagram of a polyether polyol production wastewater treatment device proposed in the present invention.

[0019] Figure 3 This is a schematic diagram of the cleaning mechanism of a polyether polyol production wastewater treatment device proposed in the present invention.

[0020] Figure 4 For the present invention Figure 3 Schematic diagram of the locally enlarged structure at point A in the middle.

[0021] Figure 5 This is a schematic cross-sectional view of a polyether polyol production wastewater treatment device proposed in the present invention.

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the locally enlarged structure at point B in the middle.

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the collection mechanism of a polyether polyol production wastewater treatment device proposed in the present invention.

[0024] Figure 8 This is a schematic diagram of the linkage components of a polyether polyol production wastewater treatment device proposed in the present invention.

[0025] Figure 9This is a schematic diagram of the drive components of a polyether polyol production wastewater treatment device proposed in the present invention.

[0026] Figure 10 For the present invention Figure 9 Schematic diagram of the partially enlarged structure at point C in the middle.

[0027] Figure 11 This is an enlarged structural schematic diagram of the drive component of a polyether polyol production wastewater treatment device proposed in the present invention.

[0028] Figure 12 This is a schematic diagram of the collection mechanism of a polyether polyol production wastewater treatment device proposed in the present invention.

[0029] Figure 13 For the present invention Figure 12 Schematic diagram of the locally enlarged structure at point D in the middle.

[0030] Figure 14 This is a schematic diagram of the grid structure of a polyether polyol production wastewater treatment device proposed in the present invention.

[0031] Figure 15 For the present invention Figure 14 Schematic diagram of the locally enlarged structure at point E in the middle.

[0032] Figure 16 This is a schematic diagram of the crushing mechanism of a polyether polyol production wastewater treatment device proposed in the present invention.

[0033] In the figure: 1. grille; 2. first cover; 3. second cover; 4. shell; 5. cleaning rake; 6. cleaning brush; 7. blade; 8. first assembly rod; 9. stirring plate; 10. drain pipe; 11. first tooth roller; 12. first tooth chain; 13. water pipe; 14. collecting pipe; 15. second assembly rod; 16. spray hole; 17. auxiliary cover; 18. spiral blade; 19. round rod; 20. face gear; 21. spur gear; 22. second tooth roller; 23. second tooth chain; 24. third tooth roller; 25. third tooth chain; 26. support plate; 27. connecting rod; 28. fourth tooth chain; 29. ​​slot; 30. collecting port. DETAILED DESCRIPTION

[0034] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 、 Figure 10 、 Figure 11 、 Figure 14 and Figure 15A polyether polyol production wastewater treatment device includes two grids 1 and two sealed cabins, the sealed cabins including a first cover 2, a second cover 3 and a shell 4, and further includes: a crushing mechanism provided on the second shell 4, a cleaning mechanism provided on the grid 1, and a collecting mechanism provided directly below the cleaning mechanism;

[0035] The cleaning mechanism includes a water pipe 13 and two cleaning brushes 6. The two grilles 1 are arranged on the outer walls of the opposite sides of the two first cover bodies 2. Two groups of first toothed rollers 11 are arranged on the outer wall of one side of the first cover body 2 through bearings. The outer wall of each group of first toothed rollers 11 is meshed with a first toothed chain 12, wherein the outer walls of the two first toothed rollers 11 are meshed with a fourth toothed chain 28, one end of one of the first toothed rollers 11 is externally connected to a first motor, and a number of cleaning rakes 5 arranged at equal distances are arranged on the first toothed chain 12. The two cleaning brushes 6 are arranged on the outer walls of the opposite sides of the two first cover bodies 2 through bearings, and a drive assembly is provided at one end of the cleaning brush 6.

[0036] During the specific implementation process, the wastewater first enters the device, and its large particles of impurities can be evenly crushed by the crushing mechanism. The wastewater is then preliminarily filtered through two grilles 1 with different apertures. The impurities, fibers, etc. remaining on the grille 1 are driven by the first motor to rotate the first tooth roller 11, driving the first tooth chain 12 and the cleaning rake 5 to move, and the surface of the grille 1 is cleaned. The two cleaning brushes 6 are driven by the driving assembly to rotate relative to each other, ensuring that the grille 1 can be self-cleaned while being cleaned. At the same time, the water pipe 13 sprays water through the spray hole 16 to rinse the cleaning brush 6, further enhancing the cleaning effect, and the removed impurities fall into the collection mechanism and wait for subsequent centralized treatment.

[0037] Reference Figure 3 、 Figure 4 、 Figure 9 、 Figure 10 and Figure 11 In a preferred embodiment, the driving assembly includes two support plates 26, which are arranged on the outer wall of one side of the first cover body 2, and a connecting rod 27 is provided on the outer wall of the opposite side of the two support plates 26 through a bearing, and a spur gear 21 is provided on the circumferential outer wall of the connecting rod 27. One end of each cleaning brush 6 is provided with a face gear 20, and the spur gear 21 and the two face gears 20 are engaged with each other. One end of the connecting rod 27 is externally connected to a second motor.

[0038] It should be noted that after the second motor is started, the spur gear 21 is driven to rotate through the connecting rod 27. The spur gear 21 is engaged with the two face gears 20 at the same time, driving the two cleaning brushes 6 to rotate in opposite directions. The support plate 26 provides stable support to ensure the gear meshing accuracy. The rotation speed of the cleaning brush 6 can be adjusted by the second motor according to the viscosity of the wastewater and the impurity content to achieve the best cleaning effect.

[0039] Reference Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 15 In a preferred embodiment, the first cover body 2 has a trapezoidal structure, the two grilles 1 are arranged relatively tilted, the filtering sizes of the two grilles 1 are different, the two cleaning rakes 5 are respectively adapted to the sizes of the two grilles 1, and a plurality of spray holes 16 arranged at equal distances are opened on the circumferential outer wall of the water pipe 13.

[0040] Among them, the first cover body 2 adopts a trapezoidal structure, and the double grilles 1 are tilted to form a V-shaped filtering surface to improve the interception efficiency. Grilles 1 of different filtering sizes are used to achieve graded processing. The cleaning rake 5 is adapted to the size of the grille 1 to ensure cleaning without dead angles, and effectively clean the impurities filtered by the grille 1. The spray holes 16 on the water pipe 13 are arranged equidistantly along the axial direction. The design of the equidistant spray holes 16 ensures that the flushing water is evenly distributed, which is convenient for cooperating with the cleaning brush 6 to perform self-cleaning function.

[0041] Reference Figure 5 、 Figure 6 、 Figure 7 、 Figure 12 and Figure 13 In a preferred embodiment, the collection mechanism includes a collection pipe 14, which is arranged on the outer wall of the opposite side of the two first cover bodies 2. A round rod 19 is provided on the outer wall of one side of the first shell 4 through a bearing, and a spiral blade 18 is provided on the circumferential outer wall of the round rod 19. One end of the round rod 19 is externally connected to a third motor, and an auxiliary cover 17 is provided on the inner wall of the collection pipe 14.

[0042] Specifically, the impurities removed by the cleaning mechanism fall into the collection pipe 14, and the third motor drives the round rod 19 to rotate, driving the spiral blade 18 to push the impurities toward the sewage pipe 10. The auxiliary cover 17 covers the upper part of the spiral blade 18, and the collection port 30 opened on the top is aligned with the bottom of the cleaning brush 6, which can effectively guide the impurities into the collection pipe 14 and cooperate with the spiral blade 18 to realize the automatic transportation of impurities, reduce the risk of blockage, and improve the collection effect.

[0043] Reference Figure 6 、 Figure 7 、 Figure 8 、 Figure 12 and Figure 13 In a preferred embodiment, two collecting ports 30 and several equally spaced slots 29 are provided on the top outer wall of the auxiliary cover 17 . The slots 29 are wavy in structure, and a sewage pipe 10 is provided at one end of the collecting pipe 14 .

[0044] In particular, two symmetrical collecting ports 30 are opened on the top of the auxiliary cover 17. Generally, solid impurities can directly flow into the bottom and be transported out through the spiral blades 18. The slot 29 has a wavy structure. When the fiber impurities scraped off by the cleaning mechanism are wrapped around the cleaning brush 6, one end of the fiber falls on the auxiliary cover 17. The wavy slot 29 can guide and accurately limit the fiber impurities with its special shape, and then with the help of the transporting capacity of the spiral blades 18, the fiber impurities can be easily taken away.

[0045] Reference Figure 1 、 Figure 5 、 Figure 8 、 Figure 9 and Figure 16 In a preferred embodiment, the crushing mechanism includes two groups of second assembly rods 15, which are arranged on the outer walls of the two second cover bodies 3 on opposite sides. A third toothed roller 24 is provided at one end of the second assembly rod 15, and a plurality of blades 7 arranged at equal distances are provided on the circumferential outer wall of the second assembly rod 15. A third toothed chain 25 is engaged with the two groups of third toothed rollers 24, wherein one end of the two third toothed rollers 24 is externally connected to a fourth motor, and a stirring assembly is provided on the outer walls of the two second cover bodies 3 on opposite sides.

[0046] Among them, through the synchronous transmission mechanism of the third tooth roller 24 and the third tooth chain 25, the two sets of blades 7 can be ensured to achieve precise and synchronous relative operation, thereby building a stable and reliable crushing chamber, and the equidistantly arranged blades 7 cooperate with each other to form a continuous and complete cutting surface, so that large particles of impurities can be evenly subjected to the cutting force after entering the cutting area, thereby achieving an efficient and uniform crushing effect.

[0047] Reference Figure 8 、 Figure 9 and Figure 16 In a preferred embodiment, the stirring assembly includes several first assembly rods 8, which are all arranged on the outer walls of the opposite sides of the two second cover bodies 3 through bearings. Two stirring plates 9 are provided on the circumferential outer walls of the assembly rods. A second toothed roller 22 is provided at one end of the assembly rod, and a second toothed chain 23 is engaged with the outer wall of the second toothed roller 22. One end of one of the second toothed rollers 22 is externally connected to a fifth motor.

[0048] Specifically, a three-dimensional stirring space is constructed by the parallel arrangement of multiple assembly rods, and the double stirring plates 9 structure symmetrically arranged on the assembly rods form a high-intensity shear flow field during operation. This design significantly improves the uniformity of solid-liquid mixing during wastewater treatment, allowing suspended impurities to be fully dispersed and maintain a stable suspended state, thereby greatly optimizing the treatment effect of subsequent filtration processes and creating favorable conditions for the complete removal of impurities.

[0049] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A polyether polyol production wastewater treatment device, comprising two grids (1) and two sealed cabins, wherein the sealed cabins comprise a first cover (2), a second cover (3) and a shell (4), characterized in that: The second cover (3) is provided with a crushing mechanism, the grille (1) is provided with a cleaning mechanism, and a collecting mechanism is provided directly below the cleaning mechanism; The cleaning mechanism comprises a water pipe (13) and two cleaning brushes (6), two grilles (1) are arranged on the outer walls of the two first cover bodies (2) on the opposite side, two groups of first tooth rollers (11) are arranged on the outer wall of one side of the first cover body (2) through bearings, and the outer wall of each group of the first tooth rollers (11) is meshed with a first tooth chain (12), wherein the outer walls of the two first tooth rollers (11) are meshed with a fourth tooth chain (28), one end of one of the first tooth rollers (11) is externally connected to a first motor, and the first tooth chain (12) is provided with a plurality of cleaning rakes (5) arranged at equal distances, and the two cleaning brushes (6) are arranged on the outer walls of the two first cover bodies (2) on the opposite side through bearings, and one end of the cleaning brush (6) is provided with a driving component.

2. A polyether polyol production wastewater treatment device according to claim 1, characterized in that: The driving assembly comprises two support plates (26), the support plates (26) being arranged on one side outer wall of the first cover body (2), a connecting rod (27) being arranged on the outer wall of the opposite side of the two support plates (26) via a bearing, a spur gear (21) being arranged on the circumferential outer wall of the connecting rod (27), a face gear (20) being arranged at one end of each of the two cleaning brushes (6), the spur gear (21) and the two face gears (20) being meshed with each other, and a second motor being externally connected to one end of the connecting rod (27).

3. A polyether polyol production wastewater treatment device according to claim 2, characterized in that: The first cover (2) has a trapezoidal structure, the two grilles (1) are arranged at an angle relative to each other, the filtering sizes of the two grilles (1) are different, the two cleaning rakes (5) are respectively adapted to the sizes of the two grilles (1), and a plurality of spray holes (16) arranged at equal distances are provided on the circumferential outer wall of the water pipe (13).

4. A polyether polyol production wastewater treatment device according to claim 3, characterized in that: The collecting mechanism comprises a collecting pipe (14), the collecting pipe (14) being arranged on the outer wall of one side of the two first covers (2), a round rod (19) being arranged on the outer wall of one side of the first cover (2) via a bearing, a spiral blade (18) being arranged on the circumferential outer wall of the round rod (19), one end of the round rod (19) being externally connected to a third motor, and an auxiliary cover (17) being arranged on the inner wall of the collecting pipe (14).

5. A polyether polyol production wastewater treatment device according to claim 4, characterized in that: Two collecting ports (30) and a plurality of equally spaced slots (29) are provided on the top outer wall of the auxiliary cover (17), and the slots (29) are in a wavy structure.

6. A polyether polyol production wastewater treatment device according to claim 5, characterized in that: A sewage discharge pipe (10) is provided at one end of the collecting pipe (14).

7. A polyether polyol production wastewater treatment device according to claim 1, characterized in that: The crushing mechanism comprises two groups of second assembly rods (15), wherein the second assembly rods (15) are arranged on the outer walls of the two second covers (3) on the opposite side, a third tooth roller (24) is arranged at one end of the second assembly rod (15), a plurality of blades (7) arranged at equal distances are arranged on the circumferential outer wall of the second assembly rod (15), a third tooth chain (25) is meshed on the two groups of the third tooth rollers (24), wherein one end of the two third tooth rollers (24) is externally connected to a fourth motor, and a stirring assembly is arranged on the outer walls of the two second covers (3) on the opposite side.

8. A polyether polyol production wastewater treatment device according to claim 7, characterized in that: The stirring assembly comprises a plurality of first assembly rods (8), each of which is arranged on the outer walls of opposite sides of the two second covers (3) via bearings, and two stirring plates (9) are arranged on the circumferential outer walls of the assembly rods.

9. A polyether polyol production wastewater treatment device according to claim 8, characterized in that: A second toothed roller (22) is provided at one end of the assembly rod, a second toothed chain (23) is meshed on the outer wall of the second toothed roller (22), and a fifth motor is externally connected to one end of one of the second toothed rollers (22).

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