Sewage treatment equipment for production of dimethyl tetrahydrophthalate and use process of sewage treatment equipment

Abstract

The invention provides sewage treatment equipment for dimethyl tetrahydrophthalate production and a use process of the sewage treatment equipment, and relates to the technical field of chemical wastewater treatment, the treatment equipment comprises a sewage inlet pipe, a sewage outlet pipe and a filter material conveying pipe, the sewage outlet pipe and the filter material conveying pipe are fixed together to form a herringbone pipeline, and the herringbone pipeline is provided with a water inlet pipe and a water outlet pipe; a treatment section pipeline is fixedly communicated between the top of the herringbone pipeline and the sewage inlet pipe, a filtering and cleaning assembly is arranged on the left side of the treatment section pipeline, and a collecting assembly is arranged on the right side of the treatment section pipeline. Sewage is rapidly filtered and separated in the flowing process, so that the treatment time is shortened, the overall sewage treatment efficiency is improved, the production process can be more rapidly carried out, the retention and accumulation of the sewage are avoided, and the risk of chemical reaction or peculiar smell generation possibly caused by retention is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical wastewater treatment, and more specifically, particularly relates to a sewage treatment device for dimethyl tetrahydrophthalate production and a use process thereof. Background Art

[0002] In the field of chemical production, especially in the production process of dimethyl tetrahydrophthalate, due to the chemical reactions involved, the input of raw materials and the characteristics of the production process, a large amount of wastewater with complex components and mixed with large and small particles will be generated.

[0003] In the production process, factors such as incomplete reaction of raw materials, loss of catalysts, wear of equipment and various by-products generated in chemical reactions cause the wastewater to contain unreacted raw material particles (large particles), fine catalyst particles (small particles), metal debris (large particles) generated by equipment wear and various by-product particles of different sizes formed in the production process. These particles of different sizes are mixed with liquid wastewater. If they are discharged directly without effective treatment, they will cause serious pollution to the environment.

[0004] Traditional sewage treatment methods and equipment have many problems. Common sewage treatment equipment is often large in size and requires a large space for installation and use, which is a big challenge for companies with limited production space. In addition, many devices have a single filtering method and cannot effectively separate and classify particles of different sizes in sewage, resulting in poor sewage treatment effects and low resource recovery and utilization rates.

[0005] In addition, during the filtration process, the filtrate is prone to clogging the pipes and accumulating inside the equipment, which not only affects the treatment efficiency, but also increases the maintenance cost and repair frequency of the equipment. At the same time, traditional equipment is inefficient in cleaning the filtrate, and it is necessary to stop the sewage inlet pipe for a long time, which seriously affects the continuity of production and sewage treatment.

[0006] For the transportation and classification of filtered materials, previous equipment lacked reasonable design and was unable to achieve the precise separation and transportation of coarse filtered materials and fine filtered materials, which brought inconvenience to subsequent processing and recycling.

[0007] Furthermore, the internal cleanliness of the equipment is difficult to ensure, and the lack of an effective cleaning mechanism can easily lead to dirt accumulation on the inner wall of the pipe, affecting the normal operation and service life of the equipment.

[0008] In summary, in order to meet the needs of high efficiency, energy saving, environmental protection and sustainable development of wastewater treatment in the production process of dimethyl tetrahydrophthalate, it is urgent to develop a new type of wastewater treatment equipment and its use process. Summary of the invention

[0009] In order to solve the above technical problems, the present invention provides a wastewater treatment device for dimethyl tetrahydrophthalate production and a use process thereof to solve the above problems.

[0010] A sewage treatment device for producing dimethyl tetrahydrophthalate comprises a sewage inlet pipe, a sewage outlet pipe and a filter conveying pipe, wherein the sewage outlet pipe and the filter conveying pipe are fixed together to form a "human"-shaped pipe, a treatment section pipe is fixedly connected between the top of the "human"-shaped pipe and the sewage inlet pipe, a filtering and cleaning component is arranged on the left side of the treatment section pipe, and a collecting component is arranged on the right side of the treatment section pipe, wherein the treatment section pipe comprises a treatment section pipe body, a cleaning pipe and two pairs of sets of blocks, a partition plate and an arc-shaped partition plate are installed in the "human"-shaped pipe, a connecting groove 1 and a connecting groove 2 are opened on the filter conveying pipe, the partition plate is fixed to the middle part of the inner wall of the "human"-shaped pipe, the arc-shaped partition plate is fixed to the middle part of the inner wall of the filter conveying pipe, the filtering and cleaning component comprises a left splicing shell, two left mounting rings and two pairs of cross bars, and the collecting component comprises a right splicing shell, two arc-shaped sealing plates and two right mounting rings.

[0011] Preferably, two pairs of sleeve blocks are respectively fixed on the front and rear sides of the outer wall of the processing section tube body, a cleaning tube is connected to the lower end of the processing section tube body, a splicing groove is opened on the left side of the processing section tube body, and two arc-shaped discharge grooves are opened on the right side of the processing section tube body, and an internal sleeve one and an internal sleeve two are fixed to the inner wall of the processing section tube body, wherein a partition is also provided at the lower end of the inner wall of the processing section tube body, the bottom of the partition is fixed to the partition plate, and the arc surface of the upper end of the partition is fixed to the inner wall of the processing section tube body.

[0012] Preferably, a connecting rod is fixedly connected between each pair of cross rods, a connecting piece is fixedly connected between the two connecting rods, the middle parts of the two connecting rods are fixedly connected to round rods, the ends of the two round rods are respectively fixedly connected to an upper plate and a lower plate, a group of cleaning rods one and a group of cleaning rods two are respectively fixedly connected to the upper plate and the lower plate, wherein each end of cleaning rod one and cleaning rod two is fixedly connected to a cleaning block, the cleaning block on cleaning rod one is larger than the cleaning block on cleaning rod two, and the lower ends of the upper plate and the lower plate are respectively fixedly connected to sealing plate one and sealing plate two.

[0013] Preferably, the end of each cross bar is fixedly connected with a connecting block with a hole, the right side of the inner wall of the left spliced ​​shell is fixedly connected with a coarse filter plate and a fine filter plate, the outer wall of the left spliced ​​shell is fixedly connected with four pairs of sets of blocks 2, and the left side of the inner wall of the left spliced ​​shell is fixedly connected with a water retaining member 1 and a water retaining member 2, which are respectively fitted with sealing plates 1 and 2 up and down, wherein the bottom of the water retaining member 1 is fixedly connected with an electric telescopic rod, the end of the rod body of the electric telescopic rod is fixed at the middle part of the connecting member, and the ends of the water retaining member 1 and the water retaining member 2 away from the connecting member are both concave arc ends.

[0014] Preferably, a rod groove and two through holes are provided on the surface of the left-side spliced ​​shell facing away from the treatment section tube body, and the upper and lower ends of the left-side spliced ​​shell facing away from the treatment section tube body are respectively fixedly connected with a cushion seat and a connecting plate, and gaskets are fixed on the cushion seat and the connecting plate, and each gasket is affixed with a rubber sheet on the side facing away from the left-side spliced ​​shell, and a connecting long rod is fixedly connected between the two gaskets, and a supporting inclined plate is fixedly connected between the bottom surface of the left-side spliced ​​shell and the connecting plate, a positioning screw rod 1 is threadedly sleeved on the supporting inclined plate, and a threaded sleeve is threadedly sleeved on the end of the positioning screw rod 1, and the threaded sleeve is fixed on the outer wall of the sewage outlet pipe, wherein the two through holes are respectively movably sleeved with two round rods, the rod groove is movably sleeved with the telescopic rod body of the electric telescopic rod, and the right side of the left-side spliced ​​shell is clamped with the splicing groove.

[0015] Preferably, a long hole is provided at the lower end of the connecting plate, a pair of short rods are fixedly connected between the two left mounting rings, a base is fixedly connected to the left mounting ring located below the connecting plate, two connecting plates are fixedly connected to the base, the base is rotatably connected to the lower end of the connecting plate, a connecting screw is movably sleeved between the two connecting plates, the connecting screw passes through the long hole, and a matching nut is installed at the end of the connecting screw, wherein the two left mounting rings are fixedly sleeved to the sewage outlet pipe by bolts.

[0016] Preferably, the left side of the right side spliced ​​shell is attached to the right side of the outer wall of the processing section tube body, the front surface of the right side spliced ​​shell is fixedly connected with cleaning pipe 2 and cleaning pipe 3, the outer wall of the right side spliced ​​shell is also fixedly connected with four pairs of sleeve blocks 3, and two rectangular grooves are provided on the surface of the right side spliced ​​shell facing away from the processing section tube body, and the lower end of the outer wall of the right side spliced ​​shell is fixedly connected with a support assembly, wherein the support assembly consists of two support rods and a support plate, and a positioning screw 2 is threadedly sleeved on the support plate, and the end of the positioning screw 2 is threadedly sleeved on the outer wall of the filter material conveying pipe.

[0017] Preferably, the two right-side mounting rings are fixedly sleeved on the filter material conveying pipe by bolts, a pair of identical short rods are fixedly connected between the two right-side mounting rings, the supporting assembly is fixed between the lower end of the right-side spliced ​​shell and the two right-side mounting rings, rectangular sliding rods are movably sleeved in the two rectangular grooves on the processing section tube body, the two arc-shaped sealing plates are respectively fixedly connected to the left sides of the two rectangular sliding rods, the right sides of the two rectangular sliding rods are fixedly connected to a cross frame, each of the two cross frames is provided with vertical grooves and rectangular slots at both ends, the bottom of the cross frame at the lower end is fixedly connected with a bottom screw, and the four rectangular slots are respectively movably plugged with four connecting blocks.

[0018] Preferably, positioning rods are movably sleeved in the two vertical grooves located on the front side, and the same positioning rods are movably sleeved in the two vertical grooves located on the rear side, the positioning rods pass through the holes on the connecting block, and a connecting beam is fixedly connected between the two positioning rods. A circular hole is opened in the middle part of the connecting beam, and the bottom screw passes through the circular hole, and a limiting screw ring is threadedly sleeved on the bottom screw, wherein a handle is fixedly connected to the bottom of the connecting beam, and two arc-shaped sealing plates are respectively stuck in the two discharge grooves, and an internal distinguishing component is arranged in the right spliced ​​shell, and the internal distinguishing component includes an internal inclined plate and an internal vertical plate, and the internal inclined plate and the internal vertical plate are fixedly connected, and landslide 1 and landslide 2 are respectively fixedly connected to the two sides of the bottom of the internal vertical plate, and the bottoms of landslide 1 and landslide 2 both fit the outer wall of the filter conveying pipe.

[0019] A process for using wastewater treatment equipment for producing dimethyl tetrahydrophthalate, comprising the following steps:

[0020] S1: When in use, the wastewater generated in the production process of dimethyl tetrahydrophthalate flows in from the wastewater inlet pipe, and is subjected to double physical filtration by the coarse filter plate and the fine filter plate in the treatment section pipeline. The large particles of filtered matter remain on the coarse filter plate, and the liquid wastewater mixed with the small particles of filtered matter is filtered again by the fine filter plate;

[0021] S2: The filtered sewage is diverted through the separator and flows into the sewage outlet pipe;

[0022] S3: When cleaning the filtrate on the coarse filter plate and the fine filter plate regularly, first close the electronic valve on the sewage inlet pipe. After waiting for a while, the electric telescopic rod retracts to drive the cleaning rod 1 and the cleaning rod 2 to push the filtrate into the two discharge slots respectively. The filtrate filtered by the coarse filter plate falls into the connecting slot 2 through the internal inclined plate and enters the rear half of the filtrate conveying pipe. The filtrate filtered by the fine filter plate falls into the connecting slot 1 through the landslide 1 and enters the front half of the filtrate conveying pipe.

[0023] S4: After the filter conveying pipe has been used for a period of time, the cleaning pipes 1, 2 and 3 are opened to clean the filter conveying pipe and related components.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. High-efficiency filtration and separation: The equipment performs double physical filtration directly inside the pipeline without the need for additional filtering equipment, saving space and installation costs. The sewage is quickly filtered and separated during the flow process, reducing processing time, improving the overall sewage treatment efficiency, and enabling the production process to proceed more quickly. This instant filtration method avoids the retention and accumulation of sewage, and reduces the risk of chemical reactions or odors that may be caused by retention.

[0026] 2. Classification and recycling: The channel design for conveying coarse filters and fine filters separately makes it possible to clearly distinguish filters of different sizes, which facilitates the subsequent specific treatment of each type of filter. For example, large-particle filters may be more suitable for physical treatment or recycling, while small-particle filters may require chemical treatment. Targeted treatment methods improve the recycling rate of resources, reduce production costs, and also reduce waste emissions, which is of positive significance to environmental protection.

[0027] 3. Reduce blockage and accumulation: The careful design of the internal inclined plate, landslide 1 and landslide 2 provides guidance and assistance for the sliding of the filter material. The filter material can move more smoothly along the predetermined path, reducing the possibility of blockage at the turning point or interface of the pipeline, avoiding the accumulation of the filter material, ensuring the stable operation of the entire conveying system, and reducing the equipment failure and maintenance frequency caused by blockage and accumulation.

[0028] 4. Optimize the use of pipeline space: The arc-shaped partition plate cleverly divides the filter conveying pipe into different areas, making full use of the internal space of the pipeline, and realizing the separate delivery of coarse and fine filters in a limited space, avoiding the space waste and cost increase caused by setting up separate pipelines for different filters. This compact design makes the equipment more flexible in installation and use, and adapts to different site conditions.

[0029] 5. Improve pipeline cleanliness: The configuration of multiple cleaning pipes fully covers the key parts of the equipment, including different areas of the filter conveying pipe and the complex internal structure. Cleaning pipe 1 can flush the dead corners in the filter conveying pipe to prevent garbage accumulation; cleaning pipe 2 and cleaning pipe 3 can respectively clean the flow path of the filter. The comprehensive cleaning effect minimizes the cleaning dead corners, keeps the inner wall of the pipe clean, helps to improve the operating efficiency and stability of the equipment, and extends the service life of the equipment.

[0030] 6. Easy to inspect and maintain: The structural design of the equipment takes into account the convenience of inspection and maintenance. When parts need to be replaced or repaired, the relevant components can be quickly disassembled and adjusted through simple operating steps, such as turning bolts, removing screws, etc. The filtering and cleaning components can be deflected to lower the height and open the internal structure to facilitate inspection and maintenance by the staff. This easy-to-maintain design reduces the downtime of the equipment, reduces production interruptions caused by failures, and improves the availability and reliability of the equipment.

[0031] 7. Reduce production impact: The design of simultaneously cleaning the filtrate on the coarse filter plate and the fine filter plate significantly improves the cleaning efficiency, reduces the time of sewage inlet pipe closure, minimizes the interference with production and sewage treatment processes, helps to maintain the continuity and stability of production, and reduces the decline in production efficiency caused by sewage treatment.

[0032] 8. Automatic drainage and anti-accumulation: The trapezoidal slope structure of the water retaining part has been smoothed so that the sewage falling on it can slide down quickly with the help of gravity, effectively avoiding the accumulation of sewage on the water retaining part, reducing the problems of bacteria breeding and corrosion that may be caused by accumulated water, ensuring the dryness and cleanliness of the inside of the equipment, and helping to improve the service life and operational stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a schematic diagram of a sewage treatment pipe without filtering and cleaning components and collecting components installed;

[0035] Figure 3 It is a structural schematic diagram of the processing section pipeline in the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the separator in the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the sewage outlet pipe and the filter material conveying pipe in the present invention;

[0038] Figure 6 It is a structural schematic diagram of the arc-shaped partition plate in the present invention;

[0039] Figure 7 It is a structural schematic diagram of the processing section pipe body in the present invention;

[0040] Figure 8 It is a schematic diagram of the structure of the filtering and cleaning components in the present invention;

[0041] Fig. 9 It is a structural schematic diagram of the connecting plate in the present invention;

[0042] Fig.10 It is a schematic diagram of the structure of the cleaning rod 1 and the cleaning rod 2 in the present invention;

[0043] Fig.11 It is a schematic diagram of the positions of the coarse filter plate and the fine filter plate in the left spliced ​​housing in the present invention;

[0044] Fig.12 It is a structural schematic diagram of the connecting member in the present invention;

[0045] Fig.13 The present invention Fig. 9 A schematic diagram of the enlarged structure at A in the middle;

[0046] Fig.14 The present invention Figure 8 A schematic diagram of the enlarged structure at B in the middle;

[0047] Fig.15 It is a schematic diagram of the structure of the collection component in the present invention;

[0048] Fig.16 It is a structural schematic diagram of the right side spliced ​​shell in the present invention;

[0049] Fig.17 It is a structural schematic diagram of the arc-shaped sealing plate in the present invention;

[0050] Fig.18 It is a schematic diagram of the structure of the internal inclined plate in the present invention;

[0051] Fig.19 It is a structural schematic diagram of the support assembly in the present invention;

[0052] Fig. 20 The present invention Fig.17 Schematic diagram of the enlarged structure at point C in the middle.

[0053] In the figure, the corresponding relationship between the structure names and the reference numerals is as follows: 1. sewage inlet pipe; 2. treatment section pipe; 3. sewage outlet pipe; 4. filter delivery pipe; 5. filtering and cleaning component; 6. collecting component; 201. treatment section pipe body; 202. splicing groove; 203. sleeve block 1; 204. cleaning pipe 1; 205. discharge groove; 206. connection groove 2; 207. connection groove 1; 208. internal sleeve 1; 209. internal sleeve 2; 210. separator; 211. 1. Partition plate; 212. Arc partition plate; 501. Left side splicing shell; 502. Block 2; 503. Connecting plate; 504. Left side mounting ring; 505. Coarse filter plate; 506. Upper plate; 507. Cleaning rod 1; 508. Gasket; 509. Through hole; 510. Rod groove; 511. Seat; 512. Connecting long rod; 513. Support inclined plate; 514. Threaded sleeve; 515. Positioning screw 1; 516. Short rod; 517. Base; 518 , connecting piece; 519, connecting screw; 520, long hole; 521, cross bar; 522, connecting rod; 523, connecting piece; 524, electric telescopic rod; 525, sealing plate one; 526, water retaining piece one; 527, sealing plate two; 528, water retaining piece two; 529, lower plate; 530, cleaning rod two; 531, fine filter plate; 532, connecting block; 533, round rod; 601, right side splicing shell; 602, cleaning pipe two; 603, cleaning pipe three; 6 04, support assembly; 605, positioning screw 2; 606, right side mounting ring; 607, cross frame; 608, sleeve block 3; 609, rectangular slide bar; 610, arc-shaped sealing plate; 611, positioning rod; 612, rectangular slot; 613, vertical slot; 614, bottom screw; 615, round hole; 616, limiting screw ring; 617, connecting beam; 618, handle; 619, internal vertical plate; 620, internal inclined plate; 621, landslide 1; 622, landslide 2. DETAILED DESCRIPTION

[0054] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0055] See also Figure 1-Figure 20 The present invention provides a sewage treatment device for the production of dimethyl tetrahydrophthalate and a use process thereof, wherein the sewage treatment device for the production of dimethyl tetrahydrophthalate comprises a sewage inlet pipe 1, a sewage outlet pipe 3 and a filter conveying pipe 4, the sewage outlet pipe 3 and the filter conveying pipe 4 are fixed together to form a "human"-shaped pipeline, a treatment section pipeline 2 is fixedly connected between the top of the "human"-shaped pipeline and the sewage inlet pipe 1, a filtering and cleaning component 5 is arranged on the left side of the treatment section pipeline 2, and a collecting component 6 is arranged on the right side of the treatment section pipeline 2, tetrahydrophthalate The wastewater generated in the production process of dimethyl ester flows in from the wastewater inlet pipe 1, and after double physical filtration in the treatment section pipe 2, the wastewater is separated into three parts: filtered wastewater, large particle filter (unreacted raw material particles, large fragments of catalyst carriers, large metal debris generated by equipment wear, etc.) and small particle filter (smaller unreacted raw material powder, fine catalyst particles, smaller by-product particles formed in the production process, etc.), which are discharged from three pipelines respectively, so as to facilitate subsequent targeted treatment, thereby improving the overall wastewater treatment speed and efficiency;

[0056] The processing section pipeline 2 includes a processing section pipe body 201, a cleaning pipe 204 and two pairs of sets of blocks 203. A partition plate 211 and an arc-shaped partition plate 212 are installed in the "human" shaped pipeline. A connecting groove 1 207 and a connecting groove 206 are opened on the filter conveying pipe 4. The partition plate 211 is fixed to the middle part of the inner wall of the "human" shaped pipeline, and the arc-shaped partition plate 212 is fixed to the middle part of the inner wall of the filter conveying pipe 4.

[0057] The filtering and cleaning component 5 includes a left-side spliced ​​outer shell 501 , two left-side mounting rings 504 and two pairs of cross bars 521 , and the collecting component 6 includes a right-side spliced ​​outer shell 601 , two arc-shaped sealing plates 610 and two right-side mounting rings 606 .

[0058] Two pairs of sleeve blocks 203 are respectively fixed on the front and rear sides of the outer wall of the processing section tube body 201, the cleaning tube 204 is connected to the lower end of the processing section tube body 201, a splicing groove 202 is opened on the left side of the processing section tube body 201, and two arc-shaped discharge grooves 205 are opened on the right side of the processing section tube body 201. An internal sleeve 1 208 and an internal sleeve 2 209 are fixed to the inner wall of the processing section tube body 201. A partition 210 is also provided at the lower end of the inner wall of the processing section tube body 201. The bottom of the partition 210 is fixed to the partition plate 211, and the arc surface of the upper end of the partition 210 is fixed to the inner wall of the processing section tube body 201.

[0059] A connecting rod 522 is fixedly connected between each pair of cross bars 521, a connecting piece 523 is fixedly connected between the two connecting rods 522, a round rod 533 is fixedly connected to the middle parts of the two connecting rods 522, the ends of the two round rods 533 are fixedly connected to the upper plate 506 and the lower plate 529 respectively, a group of cleaning rods 1 507 and a group of cleaning rods 2 530 are fixedly connected to the upper plate 506 and the lower plate 529 respectively, a cleaning block is fixedly connected to the end of each cleaning rod 1 507 and the cleaning block on the cleaning rod 1 507 is larger than the cleaning block on the cleaning rod 2 530, and the lower ends of the upper plate 506 and the lower plate 529 are fixedly connected to the sealing plate 1 525 and the sealing plate 2 527 respectively.

[0060] The end of each cross bar 521 is fixedly connected with a connecting block 532 with a hole, the right side of the inner wall of the left spliced ​​shell 501 is fixedly connected with a coarse filter plate 505 and a fine filter plate 531, the outer wall of the left spliced ​​shell 501 is fixedly connected with four pairs of sets of blocks 2 502, the left side of the inner wall of the left spliced ​​shell 501 is fixedly connected with a water retaining member 1 526 and a water retaining member 2 528, the water retaining member 1 526 and the water retaining member 2 528 are respectively fitted with the sealing plate 1 525 and the sealing plate 2 527 up and down, the bottom of the water retaining member 1 526 is fixedly connected with an electric telescopic rod 524, the rod end of the electric telescopic rod 524 is fixed at the middle part of the connecting member 523, and the ends of the water retaining member 1 526 and the water retaining member 2 528 away from the connecting member 523 are both concave arc ends.

[0061] A rod groove 510 and two through holes 509 are provided on the surface of the left spliced ​​shell 501 away from the processing section tube body 201. The upper and lower ends of the left spliced ​​shell 501 away from the processing section tube body 201 are respectively fixedly connected with a cushion seat 511 and a connecting plate 503. Gaskets 508 are fixed on the cushion seat 511 and the connecting plate 503. A rubber sheet is attached to the side of each gasket 508 away from the left spliced ​​shell 501. A connecting long rod 512 is fixedly connected between the two gaskets 508. A supporting inclined plate 513 is fixedly connected between the bottom surface of the left spliced ​​shell 501 and the connecting plate 503. A threaded sleeve is provided on the supporting inclined plate 513. A positioning screw 515 is provided, and the end of the positioning screw 515 is threadedly sleeved with a threaded sleeve 514, and the threaded sleeve 514 is fixed to the outer wall of the sewage outlet pipe 3. The two through holes 509 are movably sleeved with the two round rods 533 respectively, and the rod groove 510 is movably sleeved with the telescopic rod body of the electric telescopic rod 524. The right side of the left splicing shell 501 is clamped with the splicing groove 202. A long hole 520 is provided at the lower end of the connecting plate 503. A pair of short rods 516 are fixedly connected between the two left mounting rings 504. A base 517 is fixedly connected to the left mounting ring 504 below the connecting plate 503, and a Two connecting pieces 518, a base 517 and a lower end of the connecting plate 503 are rotatably connected, a connecting screw 519 is movably sleeved between the two connecting pieces 518, the connecting screw 519 passes through the long hole 520, and a matching nut is installed at the end of the connecting screw 519. The two left mounting rings 504 are both sleeved with the sewage outlet pipe 3 by bolts. After the sewage generated in the production process of dimethyl tetrahydrophthalate enters the treatment section pipeline 2, it first falls on the coarse filter plate 505, and large particle filter materials (unreacted raw material particles, large fragments of catalyst carriers, large metal debris generated by equipment wear, etc.) are blocked on the coarse filter plate 505 The liquid sewage mixed with small particle filtrate (smaller unreacted raw material powder, fine catalyst particles, smaller by-product particles formed during the production process, etc.) continues to fall downward onto the fine filter plate 531, and the small particle filtrate is blocked on the fine filter plate 531. The sewage that has been filtered twice continues to flow downward, passes through the diversion of the partition 210, and flows into the sewage outlet pipe 3 and continues to be discharged to the next level of sewage treatment mechanism. There is no need to stop during the entire sewage filtration process, and the double filtration is completed directly in the pipeline, which improves the sewage treatment efficiency. There is no need to set up additional sewage filtration equipment outside the pipeline, and the pipeline can be directly modified, saving space.

[0062] The left side of the right side spliced ​​shell 601 is attached to the right side of the outer wall of the processing section tube body 201, and the front surface of the right side spliced ​​shell 601 is fixedly connected with cleaning pipe 2 602 and cleaning pipe 3 603. The outer wall of the right side spliced ​​shell 601 is also fixedly connected with four pairs of sleeve blocks 3 608. Two rectangular grooves are provided on the surface of the right side spliced ​​shell 601 away from the processing section tube body 201. The lower end of the outer wall of the right side spliced ​​shell 601 is fixedly connected with a support assembly 604. The support assembly 604 consists of two support rods and a support plate. A positioning screw 2 605 is threadedly sleeved on the support plate, and the end of the positioning screw 2 605 is threadedly sleeved on the outer wall of the filter material conveying pipe 4.

[0063] The two right-side mounting rings 606 are both fixedly sleeved on the filter material conveying pipe 4 by bolts, a pair of identical short rods 516 are fixedly connected between the two right-side mounting rings 606, the support assembly 604 is fixed between the lower end of the right-side spliced ​​shell 601 and the two right-side mounting rings 606, and rectangular slide bars 609 are movably sleeved in the two rectangular grooves on the processing section tube body 201. The two arc-shaped sealing plates 610 are respectively fixedly connected to the left sides of the two rectangular slide bars 609, and the right sides of the two rectangular slide bars 609 are fixedly connected with cross frames 607. Each of the two ends of the cross frame 607 is provided with vertical grooves 613 and rectangular slots 612. The bottom of the cross frame 607 at the lower end is fixedly connected with a bottom screw 614, and the four rectangular slots 612 are respectively movably plugged with four connecting blocks 532.

[0064] A positioning rod 611 is movably sleeved in the two vertical grooves 613 located on the front side, and the same positioning rod 611 is movably sleeved in the two vertical grooves 613 located on the rear side. The positioning rod 611 passes through the hole on the connecting block 532, and a connecting beam 617 is fixedly connected between the two positioning rods 611. A circular hole 615 is opened in the middle part of the connecting beam 617, and a bottom screw 614 passes through the circular hole 615. A limiting screw ring 616 is threadedly sleeved on the bottom screw 614. A handle 618 is fixedly connected to the bottom of the connecting beam 617, and two arc-shaped sealing plates 610 are respectively stuck in the two discharge grooves 205. An internal distinguishing component is arranged in the right spliced ​​shell 601.

[0065] The internal partitioning component includes an internal inclined plate 620 and an internal vertical plate 619, which are fixedly connected. The two sides of the bottom of the internal vertical plate 619 are respectively fixedly connected with a landslide 1 621 and a landslide 2 622, and the bottoms of the landslide 1 621 and the landslide 2 622 are both in contact with the outer wall of the filter conveying pipe 4.

[0066] An electronic valve is installed on the sewage inlet pipe 1, and the joints of the entire device are waterproofed, including using sealing strips, waterproof coatings, etc.

[0067] Working principle: When in use, the sewage generated in the production process of dimethyl tetrahydrophthalate flows in from the sewage inlet pipe 1. After double physical filtration in the treatment section pipe 2, the sewage is separated into three parts: filtered sewage, large particle filter (unreacted raw material particles, large fragments of catalyst carriers, large metal debris generated by equipment wear, etc.) and small particle filter (smaller unreacted raw material powder, fine catalyst particles, smaller by-product particles formed in the production process, etc.), and discharged from three pipelines respectively, so as to facilitate subsequent targeted treatment, thereby improving the overall sewage treatment speed and efficiency;

[0068] After the sewage generated in the production process of dimethyl tetrahydrophthalate enters the treatment section pipeline 2, it first falls on the coarse filter plate 505, and large particle filter materials (unreacted raw material particles, large fragments of catalyst carriers, large metal debris generated by equipment wear, etc.) are blocked on the coarse filter plate 505. The liquid sewage mixed with small particle filter materials (smaller unreacted raw material powder, fine catalyst particles, smaller by-product particles formed in the production process, etc.) continue to fall downward on the fine filter plate 531, and the small particle filter materials are blocked on the fine filter plate 531. The sewage that has been filtered twice continues to flow downward, through the diversion of the partition 210, and flows into the sewage outlet pipe 3 and continues to be discharged to the next level of sewage treatment mechanism. There is no need to stop during the entire sewage filtration process, and the double filtration is completed directly in the pipeline, thereby improving the sewage treatment efficiency. There is no need to set up additional sewage filtration equipment outside the pipeline, and the pipeline is directly modified, saving space;

[0069] The large particles of filtered matter remaining on the coarse filter plate 505 need to be cleaned regularly. First, close the electronic valve on the sewage inlet pipe 1 to stop the continued drainage of the sewage inlet pipe 1. After waiting for two to three minutes, the electric telescopic rod 524 retracts, and the rod body of the electric telescopic rod 524 drives the two round rods 533 to move right through the connecting piece 523. During the rightward movement, the cleaning rod 1 507 and the cleaning rod 2 530 are driven to move right through the upper plate 506 and the lower plate 529. The cleaning rod 1 507 and the cleaning rod 2 530 pass through the filter hole gaps of the coarse filter plate 505 and the fine filter plate 531 respectively, thereby pushing the filtered matter accumulated on the coarse filter plate 505 and the fine filter plate 531 to the right. In this process, The connecting piece 523 drives the four cross bars 521 to move right at the same time. Through the rightward movement of the cross bar 521, the cross frame 607 and the rectangular slide bar 609 move rightward, and the two arc-shaped sealing plates 610 move rightward and away from the discharge groove 205, so that the arc-shaped sealing plates 610 and the cleaning rods 1 507 and 2 530 move rightward at the same time, so that the filtering materials on the coarse filter plate 505 and the fine filter plate 531 are pushed into the two discharge grooves 205 respectively by the cleaning rods 1 507 and 2 530, and the filtering materials on the two filter plates are cleaned at the same time, thereby improving the cleaning efficiency, minimizing the time that the sewage inlet pipe 1 needs to be closed, and reducing the impact on the production efficiency and sewage treatment efficiency;

[0070] The filtered material filtered by the coarse filter plate 505 is pushed into the upper discharge groove 205, falls downward, and falls into the second connection groove 206 under the guidance of the internal inclined plate 620. The second landslide 622 helps the fallen filtered material slide into the second connection groove 206. The filtered material filtered by the coarse filter plate 505 finally enters the rear half of the filtered material conveying pipe 4. The filtered material filtered by the fine filter plate 531 is pushed into the lower discharge groove 205, and falls downward into the first connection groove 207. The first landslide 621 helps the fallen filtered material slide into the first connection groove 207. The filtered material filtered by the fine filter plate 531 The material finally enters the front half of the filter delivery pipe 4, which is divided into two parts by the arc-shaped partition plate 212, respectively delivering fine filter material and coarse filter material. The coarse filter material and fine filter material are delivered separately through different channels to avoid mixing the two, which is convenient for subsequent separate treatment or recycling of filters of different sizes, and improves the pertinence and efficiency of treatment. The setting of the internal inclined plate 620, the first landslide 621 and the second landslide 622 helps the filter material to slide smoothly to the designated receiving tank, reduces the blockage and accumulation of the filter material during the delivery process, and ensures the smoothness of the delivery. The arc-shaped partition plate 212 reasonably utilizes the internal space of the filter delivery pipe 4, realizes the partitioned delivery of different filters in the same delivery pipe, and saves installation space and pipeline costs.

[0071] After the two parts of the filter conveying pipe 4 have been used for a period of time, they need to be flushed. At this time, the three cleaning pipes can be opened. The cleaning liquid sprayed from the cleaning pipe 1 204 flushes a section of the inner wall below the partition 210 in the filter conveying pipe 4 to avoid garbage accumulation in the dead corner of this area, thereby improving the cleanliness of the pipe. At the same time, the cleaning liquid sprayed from the cleaning pipe 1 204 is transported downward, and under the action of gravity, it can have a certain flushing effect, thereby improving the cleaning effect of the inner wall of the filter conveying pipe 4. The cleaning liquid sprayed from the cleaning pipe 2 602 flows through the internal inclined plate 620 and the inner wall of the right spliced ​​shell 601 and slides downward, and finally enters the connecting groove 206. The cleaning liquid sprayed from the cleaning pipe 3 603 flows downward into the connecting groove 1 207. The three cleaning liquids clean a part of the filter path respectively and then merge into the filter conveying pipe 4 to clean the filter conveying pipe 4, taking away the filter attached to the inner wall, minimizing the cleaning dead corners, eliminating the need for frequent manual cleaning, and improving convenience.

[0072] The water retaining member 1 526 and the water retaining member 2 528 are both trapezoidal inclined surface structures and the inclined surfaces are smoothed, which helps the sewage that falls on the water retaining member 1 526 and the water retaining member 2 528 to slide down automatically by gravity.

[0073] When the device needs to replace parts or overhaul, the limiting screw ring 616 is turned to disengage it from the bottom screw 614. At this time, the handle 618 can be used to pull down the two positioning rods 611 to disengage them from the cross frame 607. At this time, the positioning screw 1 515 is turned to disengage it from the threaded sleeve 514, and the connecting screw 519 is pulled out, so that the entire filtering and cleaning component 5 can be deflected to lower the height, and the internal structure of the filtering and cleaning component 5 is opened to facilitate the overhaul of the filtering and cleaning component 5 and the replacement of the filter plate. The collecting component 6 can be loosened by turning the positioning screw 2 605 and the bolts on the right mounting ring 606, and the collecting component 6 can be moved to the right for disassembly and assembly overhaul. The gasket 508 acts as a buffer to prevent the filtering and cleaning component 5 from being damaged by the deflection and lowering of the height.

[0074] A process for using wastewater treatment equipment for producing dimethyl tetrahydrophthalate, comprising the following steps:

[0075] S1: When in use, the wastewater generated in the production process of dimethyl tetrahydrophthalate flows in from the wastewater inlet pipe 1, and is subjected to dual physical filtration by the coarse filter plate 505 and the fine filter plate 531 in the treatment section pipe 2. Large particles of filtered matter remain on the coarse filter plate 505, and the liquid wastewater mixed with small particles of filtered matter is filtered again by the fine filter plate 531;

[0076] S2: The filtered sewage is directed through the partition 210 to flow into the sewage outlet pipe 3;

[0077] S3: When cleaning the filtrate on the coarse filter plate 505 and the fine filter plate 531 regularly, first close the electronic valve on the sewage inlet pipe 1, wait for a while, and then the electric telescopic rod 524 retracts to drive the cleaning rod 1 507 and the cleaning rod 2 530 to push the filtrate into the two discharge grooves 205 respectively. The filtrate filtered by the coarse filter plate 505 is guided by the internal inclined plate 620 to fall into the connecting groove 206 and enter the rear half of the filter conveying pipe 4. The filtrate filtered by the fine filter plate 531 is guided by the landslide 1 621 to fall into the connecting groove 1 207 and enter the front half of the filter conveying pipe 4.

[0078] S4: After the filter conveying pipe 4 has been used for a period of time, the cleaning pipe 1 204, the cleaning pipe 2 602 and the cleaning pipe 3 603 are opened to clean the filter conveying pipe 4 and related components.

[0079] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A sewage treatment equipment for the production of dimethyl tetrahydrophthalate, comprising a sewage inlet pipe (1), a sewage outlet pipe (3) and a filtrate conveying pipe (4), wherein the sewage outlet pipe (3) and the filtrate conveying pipe (4) are fixed together to form a "human" shaped pipe, characterized in that: A processing section pipeline (2) is fixedly connected between the top of the "human" shaped pipeline and the sewage inlet pipe (1), a filtering and cleaning component (5) is arranged on the left side of the processing section pipeline (2), and a collecting component (6) is arranged on the right side of the processing section pipeline (2); The processing section pipeline (2) comprises a processing section pipe body (201), a cleaning pipe (204) and two pairs of sets of blocks (203); A partition plate (211) and an arc-shaped partition plate (212) are installed in the "human" shaped pipeline, a connecting groove 1 (207) and a connecting groove 2 (206) are opened on the filter conveying pipe (4), the partition plate (211) is fixed to the middle part of the inner wall of the "human" shaped pipeline, and the arc-shaped partition plate (212) is fixed to the middle part of the inner wall of the filter conveying pipe (4); The filtering and cleaning assembly (5) comprises a left spliced ​​housing (501), two left mounting rings (504) and two pairs of cross bars (521); The collecting assembly (6) comprises a right side spliced ​​housing (601), two arc-shaped sealing plates (610) and two right side mounting rings (606).

2. A wastewater treatment equipment for dimethyl tetrahydrophthalate production as claimed in claim 1, characterized in that: Two pairs of sleeve blocks (203) are respectively fixed on the front and rear sides of the outer wall of the processing section pipe body (201); a cleaning pipe (204) is connected to the lower end of the processing section pipe body (201); a splicing groove (202) is provided on the left side of the processing section pipe body (201); two arc-shaped discharge grooves (205) are provided on the right side of the processing section pipe body (201); an internal sleeve (208) and an internal sleeve (209) are fixed on the inner wall of the processing section pipe body (201); A partition (210) is also provided at the lower end of the inner wall of the processing section tube body (201); the bottom of the partition (210) is fixed to the partition plate (211); and the arc surface of the upper end of the partition (210) is fixed to the inner wall of the processing section tube body (201).

3. A wastewater treatment equipment for dimethyl tetrahydrophthalate production as claimed in claim 2, characterized in that: A connecting rod (522) is fixedly connected between each pair of cross rods (521), a connecting piece (523) is fixedly connected between the two connecting rods (522), a round rod (533) is fixedly connected to the middle parts of the two connecting rods (522), the ends of the two round rods (533) are respectively fixedly connected to an upper plate (506) and a lower plate (529), and a group of cleaning rods 1 (507) and a group of cleaning rods 2 (530) are respectively fixedly connected to the upper plate (506) and the lower plate (529); Among them, each end of the cleaning rod 1 (507) and the cleaning rod 2 (530) is fixedly connected with a cleaning block, the cleaning block on the cleaning rod 1 (507) is larger than the cleaning block on the cleaning rod 2 (530), and the lower ends of the upper plate (506) and the lower plate (529) are respectively fixedly connected with the sealing plate 1 (525) and the sealing plate 2 (527).

4. A wastewater treatment equipment for dimethyl tetrahydrophthalate production as claimed in claim 3, characterized in that: The end of each cross bar (521) is fixedly connected to a connection block (532) with a hole, the right side of the inner wall of the left spliced ​​shell (501) is fixedly connected to a coarse filter plate (505) and a fine filter plate (531), the outer wall of the left spliced ​​shell (501) is fixedly connected to four pairs of sleeve blocks (502), the left side of the inner wall of the left spliced ​​shell (501) is fixedly connected to a water retaining member 1 (526) and a water retaining member 2 (528), and the water retaining member 1 (526) and the water retaining member 2 (528) are respectively fitted with a sealing plate 1 (525) and a sealing plate 2 (527) in upper and lower positions; The bottom of the water retaining member 1 (526) is fixedly connected to an electric telescopic rod (524), the end of the rod body of the electric telescopic rod (524) is fixed to the middle part of the connecting member (523), and the ends of the water retaining member 1 (526) and the water retaining member 2 (528) away from the connecting member (523) are both concave arc ends.

5. A wastewater treatment equipment for dimethyl tetrahydrophthalate production as claimed in claim 4, characterized in that: A rod groove (510) and two through holes (509) are provided on the surface of the left splicing shell (501) facing away from the processing section tube body (201); a cushion seat (511) and a connecting plate (503) are respectively fixedly connected at the upper and lower ends of the side of the left splicing shell (501) facing away from the processing section tube body (201); a gasket (508) is fixed on the cushion seat (511) and the connecting plate (503); each gasket (508) faces away from the left splicing shell (501). A rubber sheet is attached to one side of each of the two gaskets (508); a connecting rod (512) is fixedly connected between the two gaskets (508); a supporting inclined plate (513) is fixedly connected between the bottom surface of the left spliced ​​shell (501) and the connecting plate (503); a positioning screw rod (515) is threadedly sleeved on the supporting inclined plate (513); a threaded sleeve seat (514) is threadedly sleeved on the end of the positioning screw rod (515); and the threaded sleeve seat (514) is fixed to the outer wall of the sewage outlet pipe (3); The two through holes (509) are respectively movably connected to the two round rods (533), the rod groove (510) is movably connected to the telescopic rod body of the electric telescopic rod (524), and the right side of the left splicing shell (501) is snap-connected to the splicing groove (202).

6. A wastewater treatment equipment for dimethyl tetrahydrophthalate production as claimed in claim 5, characterized in that: A long hole (520) is provided at the lower end of the connecting plate (503); a pair of short rods (516) are fixedly connected between the two left mounting rings (504); a base (517) is fixedly connected to the left mounting ring (504) located below the connecting plate (503); two connecting pieces (518) are fixedly connected to the base (517); the base (517) is rotatably connected to the lower end of the connecting plate (503); a connecting screw (519) is movably sleeved between the two connecting pieces (518); the connecting screw (519) passes through the long hole (520); and a matching nut is installed at the end of the connecting screw (519); The two left-side mounting rings (504) are both fixedly sleeved with the sewage outlet pipe (3) by means of bolts.

7. A wastewater treatment equipment for dimethyl tetrahydrophthalate production as claimed in claim 6, characterized in that: The left side of the right side spliced ​​shell (601) is attached to the right side of the outer wall of the processing section tube body (201), the front surface of the right side spliced ​​shell (601) is fixedly connected with the cleaning pipe 2 (602) and the cleaning pipe 3 (603), the outer wall of the right side spliced ​​shell (601) is also fixedly connected with four pairs of sleeve blocks 3 (608), the surface of the right side spliced ​​shell (601) facing away from the processing section tube body (201) is provided with two rectangular grooves, and the lower end of the outer wall of the right side spliced ​​shell (601) is fixedly connected with the support assembly (604); The support assembly (604) is composed of two support rods and a support plate, on which a second positioning screw (605) is threadedly sleeved, and the end of the second positioning screw (605) is threadedly sleeved on the outer wall of the filter conveying pipe (4).

8. A wastewater treatment equipment for dimethyl tetrahydrophthalate production as claimed in claim 7, characterized in that: The two right-side mounting rings (606) are both fixedly sleeved on the filter material conveying pipe (4) by means of bolts, a pair of similar short rods (516) are fixedly connected between the two right-side mounting rings (606), the support assembly (604) is fixed between the lower end of the right-side spliced ​​shell (601) and the two right-side mounting rings (606), the two rectangular grooves on the processing section pipe body (201) are both movably sleeved with rectangular sliding rods (609), the two arc-shaped sealing plates (610) are respectively fixedly connected to the left sides of the two rectangular sliding rods (609), and the right sides of the two rectangular sliding rods (609) are both fixedly connected with a cross frame (607); Both ends of each cross frame (607) are provided with a vertical groove (613) and a rectangular slot (612). The bottom of the cross frame (607) at the lower end is fixedly connected with a bottom screw (614), and the four rectangular slots (612) are movably connected with the four connecting blocks (532) respectively.

9. A wastewater treatment equipment for dimethyl tetrahydrophthalate production as claimed in claim 8, characterized in that: A positioning rod (611) is movably sleeved in the two vertical grooves (613) located at the front side, and a similar positioning rod (611) is movably sleeved in the two vertical grooves (613) located at the rear side. The positioning rod (611) passes through the hole on the connecting block (532). A connecting beam (617) is fixedly connected between the two positioning rods (611). A circular hole (615) is opened in the middle part of the connecting beam (617). The bottom screw rod (614) passes through the circular hole (615). A limiting screw ring (616) is threadedly sleeved on the bottom screw rod (614). The bottom of the connecting beam (617) is fixedly connected with a handle (618), two arc-shaped sealing plates (610) are respectively stuck in two discharge grooves (205), and an internal partitioning component is arranged in the right splicing shell (601); The internal partitioning component comprises an internal inclined plate (620) and an internal vertical plate (619), the internal inclined plate (620) and the internal vertical plate (619) are fixedly connected, and two sides of the bottom of the internal vertical plate (619) are respectively fixedly connected with a landslide 1 (621) and a landslide 2 (622), and the bottoms of the landslide 1 (621) and the landslide 2 (622) are both in contact with the outer wall of the filter conveying pipe (4).

10. A process for using wastewater treatment equipment for the production of dimethyl tetrahydrophthalate, characterized in that: The following steps are involved: S1: When in use, the wastewater generated in the production process of dimethyl tetrahydrophthalate flows in from the wastewater inlet pipe (1), and is subjected to dual physical filtration by the coarse filter plate (505) and the fine filter plate (531) in the treatment section pipe (2). Large particles of filtered matter remain on the coarse filter plate (505), and the liquid wastewater mixed with small particles of filtered matter is filtered again by the fine filter plate (531); S2: The filtered sewage is directed through the partition (210) and flows into the sewage outlet pipe (3); S3: When regularly cleaning the filtrate on the coarse filter plate (505) and the fine filter plate (531), first close the electronic valve on the sewage inlet pipe (1). After waiting for a period of time, the electric telescopic rod (524) retracts to drive the cleaning rod 1 (507) and the cleaning rod 2 (530) to push the filtrate into the two discharge grooves (205) respectively. The filtrate filtered by the coarse filter plate (505) is guided by the internal inclined plate (620) to fall into the connecting groove 2 (206) and enter the rear half of the filtrate conveying pipe (4). The filtrate filtered by the fine filter plate (531) is guided by the landslide 1 (621) to fall into the connecting groove 1 (207) and enter the front half of the filtrate conveying pipe (4); S4: After the filter conveying pipe (4) has been used for a period of time, the cleaning pipe 1 (204), the cleaning pipe 2 (602) and the cleaning pipe 3 (603) are opened to clean the filter conveying pipe (4) and related components.

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