A filter with anti-shock function for petrochemical pipelines

Abstract

The present invention discloses a filter with an impact-proof function for petrochemical pipelines, which relates to the technical field of filters. It comprises a symmetrical filter tank, wherein the filter tank is fixedly connected to a first top cover, a fixed ring is fixedly connected to the inner wall of the filter tank, a filter net bag is fixedly connected to the fixed ring, the first top cover is fixedly connected to a fixed tube, the fixed tube is fixedly connected to a second top cover, the fixed tube is slidably and sealingly connected to a first sliding plug, the second top cover is slidably connected to a first sliding rod, the first sliding rod is fixedly connected to the adjacent first sliding plug, and a first elastic member is fixedly connected between the first sliding plug and the adjacent second top cover. The present invention increases the volume of the filter tank by moving the first sliding plug upward, thereby buffering the impact caused by oil pressure fluctuations in the filter tank, avoiding deformation and damage of the filter net bag caused by increased pressure in the delivery pipeline, resulting in reduced filtering effect on the oil.

Description

Technical Field

[0001] The invention relates to the technical field of filters and discloses a filter with an anti-impact function for a petrochemical pipeline. Background Art

[0002] Filters are widely used in the petrochemical industry. Filters used in petrochemicals are mainly used to filter solid particles in liquids, thereby improving the purity of the liquid and protecting the normal operation of downstream equipment. At the same time, after removing solid impurities in the fluid, they can also reduce the wear of downstream equipment and increase its service life.

[0003] During the filtration process of existing petrochemical pipelines, metal filter bags are used for filtration to separate solid impurities. When petrochemical pipelines are transporting liquids, the liquid pressure in the pipeline increases, which in turn causes the internal pressure of the filter to increase. Since the filtered impurities adhere to the inner wall of the filter bag, the liquid flow resistance increases. When the liquid pressure increases instantaneously, the pressure on both sides of the filter bag cannot be instantly balanced, causing the filter bag to be instantly subjected to severe impact from the liquid, causing the shape of the filter bag's body and the shape of the filter holes thereon to be deformed by the impact, thereby reducing the filtering effect on solid particles in the liquid. Summary of the Invention

[0004] In order to overcome the technical shortcomings of the above-mentioned background technology, the present invention provides a filter with an anti-shock function for a petrochemical pipeline.

[0005] The technical solution of the present invention is: a filter with an impact-proof function for a petrochemical pipeline, comprising symmetrical filter tanks, wherein the symmetrical filter tanks are both fixedly connected to support legs, the filter tanks are fixedly connected to a first top cover, a liquid inlet pipe and a liquid outlet pipe are connected between the symmetrical filter tanks, a symmetrical first solenoid valve is installed on the liquid inlet pipe, a symmetrical second solenoid valve is installed on the liquid outlet pipe, a controller is fixedly connected between the symmetrical filter tanks, a fixing ring is fixedly connected to the inner wall of the filter tank, a filter net bag is fixedly connected to the fixing ring, the first top cover is fixedly connected to a fixing pipe, the fixing pipe is fixedly connected to the second top cover, the fixing pipe is slidably and sealingly connected to a first sliding plug, the second top cover is slidably connected to a first sliding rod, the first sliding rod is fixedly connected to the adjacent first sliding plug, a first elastic member is fixedly connected between the first sliding plug and the adjacent second top cover, a rangefinder is provided on the upper side of the first top cover, the rangefinder, the first solenoid valve and the second solenoid valve are all electrically connected to the controller, and the fixing pipe is provided with a reset deceleration assembly.

[0006] In a further preferred embodiment, a filter is installed at the lower end of the fixed pipe to filter impurities in the oil.

[0007] A further preferred embodiment is that the reset and deceleration assembly includes symmetrical connecting pipes, which are symmetrically connected to the upper parts of the symmetrical fixed pipes respectively, and the outer ends of the connecting pipes are provided with circumferentially evenly spaced grooves. A support plate is fixedly connected to the connecting pipe, and the support plate is slidably connected to a second sliding rod. One end of the second sliding rod is fixedly connected to a mounting plate, and the second sliding rod sleeve is provided with a second elastic member, and the two ends of the second elastic member are respectively fixed to the mounting plate of the adjacent second sliding rod and the adjacent support plate, and the other end of the second sliding rod is fixedly connected to a sealing cover, and the sealing cover cooperates with the adjacent connecting pipe.

[0008] A further preferred embodiment also includes a slag discharge mechanism, which is arranged on the lower side of the symmetrical filter tank, and is used to discharge the filter residue in the filter net bag. The slag discharge mechanism includes symmetrical slag discharge pipes, and the symmetrical slag discharge pipes are respectively fixed to the lower part of the symmetrical filter tank. The slag discharge pipes pass through the adjacent filter tanks, and the slag discharge pipes are connected to the adjacent filter net bags. The slag discharge pipes are slidably and sealedly connected to the sliding pipe, and the upper part of the sliding pipe is provided with circumferentially evenly spaced slag discharge holes. The symmetrical support legs are all fixed with electric push rods electrically connected to the controller, and the telescopic ends of the electric push rods are fixed to the adjacent sliding pipes through the mounting plate.

[0009] According to a further preferred embodiment, the connection between the slag discharge pipe and the adjacent filter net bag is configured as an inclined surface to reduce filter residue residue.

[0010] A further preferred embodiment further includes a filtered liquid storage mechanism, which is arranged in the symmetrical filter tanks, and is used to store part of the filtered oil and clean the filter net bags. The filtered liquid storage mechanism includes symmetrical solid plates, which are respectively fixed in the symmetrical filter tanks, and the solid plates are fixed and sealed to the adjacent slag discharge pipes. The solid plates are provided with through holes, and a one-way valve is provided in the through holes of the solid plates. The slag discharge pipes are slidably connected to the sliding plates, and the sliding plates are slidably connected to the adjacent filter tanks and sealed. A third elastic member is fixed between the sliding plate and the adjacent filter tanks, and a connecting ring is slidably connected to the slag discharge pipes. A fourth elastic member with circumferentially equidistant spacing is fixed between the connecting rings that slide on the slag discharge pipes and the adjacent filter tanks. A pressure detection component is provided between the symmetrical filter tanks, and the pressure detection component is used to sense the oil pressure in the liquid inlet pipe. A backflush component is provided between the symmetrical filter tanks, and the backflush component is used to clean the adjacent filter net bags.

[0011] In a further preferred embodiment, the elastic force of the fourth elastic member is greater than that of the third elastic member, and the fourth elastic member is used to perform multiple buffering on the sliding plate.

[0012] According to a further preferred embodiment, the pressure detection assembly includes a symmetrical fixed shell, which is respectively fixed to the lower part of the symmetrical filter tank, an oil guide pipe is connected between the fixed shell and the liquid inlet pipe, a second sliding plug is slidably and sealedly connected inside the fixed shell, a third sliding rod is slidably and sealedly connected to the fixed shell, the third sliding rod is fixed to the adjacent second sliding plug, and the third sliding rod is fixed to the adjacent sliding plate.

[0013] A further preferred solution is that the recoil assembly includes symmetrical connecting plates, which are symmetrically fixed to the upper ends of the symmetrical first sliding rods, and the first top cover is slidably and sealedly connected to the fourth sliding rod, which passes through the adjacent fixed rings, and the fourth sliding rod is slidably connected and sealed to the adjacent fixed rings, and the fourth sliding rod is fixed to an annular shell, and the inner annular surface of the annular shell is connected to nozzles distributed at equal intervals, and the annular shell is sleeved on the adjacent filter net bag, and the annular shell is connected to a symmetrical telescopic bellows, and the bellows passes through the two adjacent solid plates and are sealed.

[0014] A further preferred embodiment also includes an auxiliary slag discharge mechanism, which is arranged on the symmetrical fixed tube, and is used to clean the filter net bag and the filter net of the fixed tube. The auxiliary slag discharge mechanism includes a symmetrical turbofan, and the symmetrical turbofans are respectively rotatably connected to the symmetrical fixed tube. The turbofan is fixed with a first N-shaped frame, and the first N-shaped frame is slidably matched with the adjacent fixed tube. The first N-shaped frame is fixed with a second N-shaped frame, and the second N-shaped frame is slidably matched with the adjacent filter net bag.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. By moving the first sliding plug upward, the volume of the filter tank is increased, thereby buffering the impact caused by the oil pressure fluctuation in the filter tank, avoiding the deformation and damage of the filter net bag caused by the pressure increase in the delivery pipeline, resulting in a decrease in the filtering effect of the oil.

[0017] 2. The first sliding plug cooperates with the adjacent fixed pipe to detect the oil pressure change in the filter tank in real time, and then determine whether the filter net bag is blocked.

[0018] 3. By starting the electric push rod, the filter residue in the filter net bag is automatically discharged, thereby saving manual cleaning of the filter residue in the filter net bag and reducing the labor intensity of the staff.

[0019] 4. The third elastic member and the fourth elastic member cushion the sliding plate, thereby preventing the oil in the filter tank from increasing instantly and causing the filter net bag to be deformed by the impact.

[0020] 5. Utilize the elastic force of the third elastic member to make the filtered oil spray out from the nozzle on the inner ring surface of the annular shell, and as the annular shell slowly moves downward, the sprayed oil backwashes the filter net bag, thereby improving the cleaning effect of the filter residue in the filter net bag and reducing the residue remaining in the filter net bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic side view of the three-dimensional structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the left part of the three-dimensional structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the filter tank and the first top cover of the present invention;

[0025] Figure 5 It is a schematic diagram of a cross-sectional three-dimensional structure of the fixing tube and the second top cover of the present invention;

[0026] Figure 6 Schematic diagram of the cross-sectional three-dimensional structure of the connecting pipe of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the filter net bag and the slag discharge pipe of the present invention;

[0028] Figure 8 Schematic diagram of the three-dimensional structure of the filtrate storage mechanism of the present invention;

[0029] Figure 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixed shell of the present invention;

[0030] Figure 10 Schematic diagram of the three-dimensional structure of the first n-shaped frame and the second n-shaped frame of the present invention.

[0031] The above drawings include the following reference numerals: 1, filter tank, 101, support leg, 2, first top cover, 3, liquid inlet pipe, 4, first solenoid valve, 5, liquid outlet pipe, 6, second solenoid valve, 7, controller, 8, fixing ring, 9, filter net bag, 10, fixing pipe, 11, second top cover, 12, first sliding plug, 13, first sliding rod, 14, first elastic member, 15, rangefinder, 16, connecting pipe, 17, support plate, 18, second sliding rod, 1 9. Second elastic member, 20. Sealing cover, 21. Slag discharge pipe, 22. Sliding pipe, 23. Electric push rod, 24. Solid plate, 25. Sliding plate, 26. Third elastic member, 27. Fourth elastic member, 28. Fixed shell, 29. Oil guide pipe, 30. Second sliding plug, 31. Third sliding rod, 32. Connecting plate, 33. Fourth sliding rod, 34. Annular shell, 35. Telescopic bellows, 36. Turbofan, 37. First N-shaped frame, 38. Second N-shaped frame. DETAILED DESCRIPTION

[0032] First of all, it should be noted that in the various embodiments described, identical components are provided with identical reference numerals or identical component names, wherein the disclosure contained throughout the entire description can be transferred to the same components having the same reference numerals or identical component names. Positional designations selected in the description, such as top, bottom, lateral, etc., also refer to the directly described and illustrated figures and are transferred to the new position in the event of a change in position.

[0033] Example 1: A filter with anti-shock function for petrochemical pipelines, such as Figure 1-Figure 5As shown, it includes two symmetrical filter tanks 1, the two symmetrical filter tanks 1 are fixedly connected with support legs 101, the filter tank 1 is fixedly connected with a first top cover 2, and the two symmetrical filter tanks 1 are connected with an inlet pipe 3 and a liquid outlet pipe 5, the inlet pipe 3 is equipped with two first solenoid valves 4 symmetrically on the left and right, and the liquid outlet pipe 5 is equipped with two second solenoid valves 6 symmetrically on the left and right. By switching the working states of the first solenoid valve 4 and the second solenoid valve 6, the two filter tanks 1 are continuously switched to filter the oil, thereby maintaining the filter being able to filter the oil uninterruptedly, a controller 7 is fixedly connected between the two symmetrical filter tanks 1 through a mounting plate, the inner wall of the filter tank 1 is fixedly connected with a fixing ring 8, the fixing ring 8 is fixedly connected with a filter net bag 9, the filter net bag 9 is set to a metal material, and the filter hole of the filter net bag 9 is a slit, the filter net bag 9 is sealed with the adjacent fixing ring 8 to prevent unfiltered oil from overflowing from between the filter net bag 9 and the adjacent fixing ring 8, the first top cover 2 is fixedly connected with a fixing pipe 10, the fixing pipe 10 is fixedly connected to the second top cover 11, the fixing pipe 10 A first sliding plug 12 is slidably and sealingly connected to the fixed tube 10. A filter is installed at the lower end of the fixed tube 10 to filter impurities in the oil and prevent solid particles in the oil from entering the fixed tube 10, causing wear on the inner wall of the fixed tube 10 and loss of sealing between the first sliding plug 12 and the adjacent fixed tube 10. The second top cover 11 is slidably connected to a first sliding rod 13. The first sliding rod 13 is fixedly connected to the adjacent first sliding plug 12. A first elastic member 14 is fixedly connected between the first sliding plug 12 and the adjacent second top cover 11. The first elastic member 14 is configured as a spring and is sleeved on the adjacent first sliding rod 13. When the oil pressure in the delivery pipeline increases, the oil squeezes the first sliding plug 12 upward, and the first elastic member 14 is compressed to cushion the impact caused by the pressure change and prevent the filter net bag 9 from being deformed by the impact. A rangefinder 15 is installed on the upper side of the first top cover 2. The rangefinder 15, the first solenoid valve 4, and the second solenoid valve 6 are all electrically connected to the controller 7. The fixed tube 10 is equipped with a reset and deceleration assembly.

[0034] like Figure 4-Figure 6As shown, the reset deceleration assembly includes two symmetrical connecting pipes 16, which are respectively connected to the upper parts of the two symmetrical fixed pipes 10. The outer ends of the connecting pipes 16 are provided with grooves with equal circumferential spacing. During the upward movement of the first sliding plug 12, the gas on the upper side of the first sliding plug 12 is discharged from the connecting pipes 16. A support plate 17 is fixedly connected to the connecting pipe 16. The support plate 17 is slidably connected to the second sliding rod 18. The rear end of the second sliding rod 18 is fixedly connected to the mounting plate. The second sliding rod 18 is sleeved with a second elastic member. The second elastic member 19 is set as a spring. The second elastic member 19 is used to drive the adjacent second sliding rod 18 to reset. The two ends of the second elastic member 19 are respectively fixed to the mounting plate of the adjacent second sliding rod 18 and the adjacent support plate 17. The front end of the second sliding rod 18 is fixed with a cover 20. The cover 20 cooperates with the adjacent connecting pipe 16. When the cover 20 contacts the adjacent connecting pipe 16, air can only enter the adjacent fixed pipe 10 from the groove of the connecting pipe 16, which is used to slow down the reset speed of the first sliding plug 12.

[0035] When using this filter, the staff connects the filter to the oil delivery pipeline. In the initial state, the first solenoid valve 4 and the second solenoid valve 6 on the left are in the open state, and the first solenoid valve 4 and the second solenoid valve 6 on the right are in the closed state. The oil enters the filter tank 1 on the left along the liquid inlet pipe 3. After the oil passes through the filter net bag 9 on the left, it is discharged from the liquid outlet pipe 5. The filter net bag 9 filters the impurities in the oil. In the initial state, the first sliding plug 12 on the left is located at the lower part of the left fixed pipe 10. During the flow of oil, the first sliding plug 12 on the left senses the pressure change in the left filter tank 1 in real time. As the filter net bag 9 gradually removes impurities in the oil, the oil flows out of the filter tank 1. The oil is filtered, the impurities in the filter net bag 9 increase, and some of the filter holes in the filter net bag 9 are blocked, the resistance of the oil passing through the filter net bag 9 increases, and then the oil pressure in the upper part of the filter net bag 9 increases, and the oil squeezes the first sliding plug 12 upward through the filter net at the lower part of the left fixed tube 10. The first sliding plug 12 on the left moves upward due to the squeezing force, and the first sliding plug 12 drives the first sliding rod 13 fixed thereon to move upward, and the first elastic member 14 on the left is compressed. At this time, the height to which the first sliding rod 13 moves upward reflects the change in the pressure of the upper oil in the filter tank 1, and the rangefinder 15 on the left monitors the upward movement distance of the first sliding rod 13 on the left in real time.

[0036] The oil will generate pressure fluctuations during the flow of the delivery pipeline. When the oil pressure increases instantaneously, the first sliding plug 12 moves upward at the same time. The gas on the upper side of the first sliding plug 12 squeezes the sealing cover 20 at the same time. The sealing cover 20 moves away from the adjacent connecting pipe 16, thereby increasing the gap between the sealing cover 20 and the adjacent connecting pipe 16, reducing the resistance of the first sliding plug 12 to move upward. At the same time, the second elastic member 19 is compressed. When the left first sliding plug 12 moves upward, the volume of the left filter tank 1 is increased, thereby buffering the oil pressure fluctuations in the left filter tank 1. The impact of the filter net bag 9 is avoided to prevent the pressure increase in the delivery pipeline from causing deformation and damage, resulting in reduced oil filtering effect. When the oil pressure in the delivery pipeline returns to normal, under the elastic force of the first elastic member 14, the first sliding plug 12 on the left drives the first sliding rod 13 thereon to move downward. Under the elastic force of the second elastic member 19, the sealing cover 20 is reset. As the first sliding plug 12 moves downward, air enters the fixed tube 10 from the groove of the connecting tube 16, slowing down the downward movement speed of the first sliding plug 12 until the elastic force of the first elastic member 14 remains the same as the pressure in the filter tank 1.

[0037] After the filter has been used for a period of time, the controller 7 opens the first solenoid valve 4 and the second solenoid valve 6 on the right, and closes the first solenoid valve 4 and the second solenoid valve 6 on the left, so that the oil flows into the filter tank 1 on the right, completes the filtration and is discharged from the filter tank 1 on the right. The staff opens the first top cover 2 on the left and takes out the filter net bag 9 on the left for cleaning. After the filter net bag 9 is cleaned, the filter net bag 9 is reset again and the first top cover 2 on the left is reset. In addition, during the use of the filter, when the first sliding rod 13 moves to the specified height, the rangefinder 15 transmits the signal to the controller 7. The controller 7 directly completes the above-mentioned switching of the first solenoid valve 4 and the second solenoid valve 6 on the left and right sides to avoid the filter net bag 9 being blocked, which will cause the pressure in the filter tank 1 to increase, causing the filter net bag 9 to deform, thereby increasing the service life of the filter. The staff repeats the above operation to complete the cleaning of the filter residue in the filter net bag 9.

[0038] Example 2: Based on Example 1, Figure 7As shown, it also includes a slag discharge mechanism, which is arranged on the lower side of the symmetrical filter tank 1. The slag discharge mechanism is used to discharge the filter residue in the filter net bag 9. The slag discharge mechanism includes two symmetrical slag discharge pipes 21. The two symmetrical slag discharge pipes 21 are respectively fixed to the lower part of the symmetrical filter tank 1. The slag discharge pipes 21 pass through the adjacent filter tanks 1. The slag discharge pipes 21 are sealed with the adjacent filter tanks 1. The lower part of the filter net bag 9 is provided with a through hole. The slag discharge pipe 21 is connected with the adjacent filter net bag 9. The filter residue in the filter net bag 9 can enter the upper part of the slag discharge pipe 21. The connection between the slag discharge pipe 21 and the adjacent filter net bag 9 is set as an inclined surface to reduce the residue residue. The filter residue in the filter net bag 9 is retained, which improves the cleaning effect of the filter residue in the filter net bag 9. The slag discharge pipe 21 is slidably and sealedly connected to the sliding pipe 22. The upper part of the sliding pipe 22 is provided with five slag discharge holes with circumferential equal intervals. The filter residue in the upper part of the slag discharge pipe 21 is accompanied by oil through the slag discharge holes on the sliding pipe 22 and flows downward along the sliding pipe 22 to discharge the filter residue. The symmetrical support legs 101 are fixedly connected to the electric push rod 23 electrically connected to the controller 7. The telescopic end of the electric push rod 23 is fixedly connected to the adjacent sliding pipe 22 through the mounting plate. The electric push rod 23 is used to drive the adjacent sliding pipe 22 to move up and down, thereby changing the matching state between the slag discharge pipe 21 and the adjacent sliding pipe 22.

[0039] Before using the filter, the staff connects the sewage pipe with the lower ends of the two sliding pipes 22. After the filter has been used for a period of time, the controller 7 controls the switching of the first solenoid valve 4 and the second solenoid valve 6 on the left and right sides. For example, to clean the left filter net bag 9, the controller 7 then starts the left electric push rod 23. In the initial state, the sliding pipe 22 and the slag discharge pipe 21 are in a sealed state. As the telescopic end of the electric push rod 23 drives the sliding pipe 22 to move upward through the mounting plate, the slag discharge hole of the sliding pipe 22 loses its seal with the slag discharge pipe 21, and the slag discharge hole on the upper side of the filter net bag 9 is opened. The oil drives the filtered impurities to flow downward through the slag discharge hole of the sliding tube 22. The oil and the filter residue mixed therein flow downward along the sliding tube 22 and flow into the sewage pipe, completing the cleaning of the filter residue in the filter net bag 9. Then the controller 7 controls the telescopic end of the electric push rod 23 to move downward, so that the sliding tube 22 on the left moves downward and resets. The amount of impurities in the filter net bag 9 is detected by the pressure change in the filter tank 1, and the electric push rod 23 is started to discharge the filter residue, thereby saving manual labor to clean the filter residue in the filter net bag 9 and reducing the labor intensity of the staff.

[0040] Example 3: Based on Example 2, Figure 2 、 Figure 8 and Figure 9As shown, it also includes a filtered liquid storage mechanism, which is arranged in a symmetrical filter tank 1. The filtered liquid storage mechanism is used to store part of the filtered oil and clean the filter net bag 9. The filtered liquid storage mechanism includes two symmetrical solid plates 24. The two symmetrical solid plates 24 are respectively fixed to the two symmetrical filter tanks 1. The solid plates 24 are located at the lower part of the inner side of the adjacent filter tanks 1. The slag discharge pipe 21 passes through the adjacent solid plate 24. The solid plate 24 is located on the lower side of the liquid outlet pipe 5. The solid plate 24 is fixed and sealed to the adjacent slag discharge pipe 21. The solid plate 24 is provided with four through holes. The four through holes of the solid plate 24 are all provided with a one-way valve. The oil filtered on the upper side of the solid plate 24 can only flow downward through the one-way valve at the through hole of the solid plate 24. The slag discharge pipe 21 is slidably connected to the sliding plate 25. The sliding plate 25 is slidably connected to the adjacent filter tank 1 and sealed. When the sliding plate 25 moves downward, the filtered oil can enter the sliding plate A third elastic member 26 is fixedly connected between 25 and the adjacent solid plate 24, and between the sliding plate 25 and the adjacent filter tank 1. The third elastic member 26 is set as a spring. The third elastic member 26 is sleeved on the adjacent slag discharge pipe 21, and the slag discharge pipe 21 is slidably connected with a connecting ring. Four fourth elastic members 27 with circumferentially equal spacing are fixedly connected between the connecting ring sliding on the slag discharge pipe 21 and the adjacent filter tank 1. The fourth elastic member 27 is set as a bow-shaped spring sheet. The elastic force of the fourth elastic member 27 is greater than that of the third elastic member 26. The fourth elastic member 27 is used to provide multiple buffers for the sliding plate 25. When the oil pressure in the conveying pipeline increases, the sliding plate 25 continues to squeeze the fourth elastic member 27 and the third elastic member 26 downward to buffer the impact caused by pressure fluctuations. A pressure detection component is set between the symmetrical filter tanks 1. The pressure detection component is used to sense the oil pressure in the liquid inlet pipe 3. A recoil component is set between the symmetrical filter tanks 1. The recoil component is used to clean the adjacent filter net bags 9.

[0041] like Figure 2 and Figure 8 As shown, the pressure detection assembly includes two symmetrical fixed shells 28, which are respectively fixed to the lower parts of the two symmetrical filter tanks 1. An oil guide pipe 29 is connected between the fixed shell 28 and the liquid inlet pipe 3. A second sliding plug 30 is slidably and sealedly connected in the fixed shell 28. In the initial state, the position of the connection between the oil pipe 29 and the adjacent fixed shell 28 is higher than the position of the adjacent second sliding plug 30. The oil in the liquid inlet pipe 3 directly drives the second sliding plug 30 to move downward. The fixed shell 28 is slidably and sealedly connected to a third sliding rod 31. The third sliding rod 31 is fixedly connected to the adjacent second sliding plug 30. The third sliding rod 31 is fixedly connected to the adjacent sliding plate 25 to ensure that during the filtration process, the third sliding rod 31 drives the adjacent sliding plate 25 away from the adjacent solid plate 24.

[0042] like Figure 5 and Figure 8As shown, the recoil assembly includes two symmetrical connecting plates 32, which are respectively fixed to the upper ends of the two symmetrical first sliding rods 13. The first top cover 2 is slidably and sealedly connected with two symmetrical fourth sliding rods 33. During the upward movement of the first sliding rod 13, the fourth sliding rod 33 thereon is driven to slide upward by the adjacent connecting plates 32. The fourth sliding rod 33 passes through the adjacent fixing ring 8. The fourth sliding rod 33 is slidably connected and sealed with the adjacent fixing ring 8 to prevent unfiltered oil from flowing downward from the connection between the fourth sliding rod 33 and the adjacent fixing ring 8. The oil between the solid plate 24 and the adjacent sliding plate 25 flows into the annular shell 34 through the telescopic bellows 35 and is ejected from the nozzle of the annular shell 34.

[0043] When filtering through this filter, taking the oil filtration of the left filter tank 1 as an example, the oil in the liquid inlet pipe 3 flows into the adjacent fixed shell 28 through the oil guide pipe 29, and the oil flowing into the fixed shell 28 squeezes the second sliding plug 30 downward, and the second sliding plug 30 drives the third sliding rod 31 fixed thereon to move downward, and the third sliding rod 31 drives the sliding plate 25 to move downward, and the sliding plate 25 moves downward along the filter tank 1 and the slag discharge pipe 21, and the sliding plate 25 moves away from the adjacent solid plate 24 until it moves to the upper side of the connecting ring at the upper end of the fourth elastic member 27. The four fourth elastic members 27 and the third elastic member 26 are deformed, so that the sliding plate 25 continues to move downward. At this time, the third elastic member 26 has not reached a fully compressed state, and the filtered oil is located on the upper side of the solid plate 24. The oil on the upper side of the solid plate 24 flows downward through the one-way valve of the through hole thereon and flows into between the solid plate 24 and the sliding plate 25.

[0044] As the oil flows along the conveying pipeline, the pressure increases, and the pressure of the oil in the liquid inlet pipe 3 directly acts on the second sliding plug 30, causing the second sliding plug 30 to move further downward. At the same time, the oil enters the filter tank 1, and the oil pressure also acts on the sliding plate 25, causing the sliding plate 25 to squeeze the third elastic member 26 and the fourth elastic member 27 downward again, so that the third elastic member 26 and the fourth elastic member 27 buffer the sliding plate 25, thereby preventing the oil in the filter tank 1 from increasing instantly, causing the filter net bag 9 to be deformed by the impact.

[0045] As the filter is used, the filter residue in the left filter net bag 9 increases, which increases the pressure of the left filter tank 1. The first sliding plug 12 drives the first sliding rod 13 fixed thereon to move upward, and the first elastic member 14 is compressed. The first sliding rod 13 simultaneously drives the connecting plate 32 fixed thereon to move upward, and the connecting plate 32 drives the annular shell 34 to move upward through the fourth sliding rod 33 fixed thereon. The annular shell 34 moves upward and the telescopic bellows 35 is gradually stretched. When the left filter net bag 9 is cleaned, the controller 7 switches the first solenoid valve 4 and the second solenoid valve 6 on the left and right sides to work, and starts the electric push rod 23. The sliding tube 22 moves upward, causing the pressure of the hydraulic oil on the upper side of the filter net bag 9 to be instantly released. Under the elastic force of the third elastic member 26, the sliding plate 25 moves upward. At the same time, Under the elastic force of the component 14, the first sliding rod 13 drives the fourth sliding rod 33 to move downward through the connecting plate 32. Under the action of the sealing cover 20, the first sliding rod 13 can slowly move downward, and the oil in the filter net bag 9 is gradually discharged. The sliding plate 25 squeezes the filtered oil upward, causing the oil to flow upward along the two telescopic bellows 35. Under the elastic force of the third elastic component 26, the filtered oil is sprayed out from the nozzle on the inner ring surface of the annular shell 34, and as the annular shell 34 slowly moves downward, the sprayed oil backwashes the filter net bag 9, thereby improving the cleaning effect of the filter residue in the filter net bag 9 and reducing the filter residue remaining in the filter net bag 9. When the sliding plate 25 and the annular shell 34 are reset, the controller 7 controls the telescopic end of the electric push rod 23 to move downward until the sliding tube 22 is reset and closed.

[0046] Example 4: Based on Example 3, Figure 10 As shown, it also includes an auxiliary slag discharge mechanism, which is arranged on two symmetrical fixed pipes 10. The auxiliary slag discharge mechanism is used to clean the filter net bag 9 and the fixed pipe 10. The auxiliary slag discharge mechanism includes two symmetrical turbofans 36, which are made of stainless steel. The two symmetrical turbofans 36 are respectively rotatably connected to the two symmetrical fixed pipes 10. The oil flowing from the liquid inlet pipe 3 into the filter tank 1 can impact the adjacent turbofans 36 to rotate circumferentially. The turbofans 36 are fixedly connected to a first N-shaped frame 37, which slides with the adjacent fixed pipe 10. The first N-shaped frame 37 rotates along the adjacent fixed pipe 10. The first N-shaped frame 37 cleans the filter net at the lower end of the adjacent fixed pipe 10. The first N-shaped frame 37 is fixedly connected to a second N-shaped frame 38, which slides with the adjacent filter net bag 9. During the filtration process, the second N-shaped frame 38 cleans the adjacent filter net bag 9, thereby improving the filtering effect of the filter on the oil.

[0047] During the process of the filter filtering the oil, the oil flowing into the filter tank 1 from the liquid inlet pipe 3 hits the turbofan 36, and the turbofan 36 rotates circumferentially along the fixed tube 10. The turbofan 36 drives the first N-shaped frame 37 and the second N-shaped frame 38 fixed thereon to rotate circumferentially. The first N-shaped frame 37 cleans the filter mesh on the lower side of the fixed tube 10 to prevent the lower side of the fixed tube 10 from being blocked, resulting in deviation when the first sliding plug 12 detects the pressure in the filter tank 1. At the same time, the second N-shaped frame 38 rotates along the filter net bag 9, and the second N-shaped frame 38 cleans the filter residue inside the adjacent filter net bag 9 to prevent the filter holes of the filter net bag 9 from being blocked, thereby improving the filtering efficiency of the oil.

[0048] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and that various modifications and variations can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter with anti-shock function for petrochemical pipelines, characterized by: The invention comprises a symmetrical filter tank (1), wherein the symmetrical filter tanks (1) are all fixedly connected with a support leg (101), the filter tanks (1) are fixedly connected with a first top cover (2), a liquid inlet pipe (3) and a liquid outlet pipe (5) are connected between the symmetrical filter tanks (1), the liquid inlet pipe (3) is installed with a symmetrical first solenoid valve (4), the liquid outlet pipe (5) is installed with a symmetrical second solenoid valve (6), a controller (7) is fixedly connected between the symmetrical filter tanks (1), a fixing ring (8) is fixedly connected to the inner wall of the filter tank (1), the fixing ring (8) is fixedly connected with a filter net bag (9), the first top cover (2) is fixedly connected with a fixing pipe (10), the fixing pipe ( 10) is fixedly connected to a second top cover (11), the fixed tube (10) is slidably and sealingly connected to a first sliding plug (12), the second top cover (11) is slidably connected to a first sliding rod (13), the first sliding rod (13) is fixedly connected to the adjacent first sliding plug (12), a first elastic member (14) is fixedly connected between the first sliding plug (12) and the adjacent second top cover (11), a rangefinder (15) is provided on the upper side of the first top cover (2), the rangefinder (15), the first solenoid valve (4) and the second solenoid valve (6) are all electrically connected to the controller (7), and the fixed tube (10) is provided with a reset deceleration component; The filter bag (9) further comprises a slag discharge mechanism, the slag discharge mechanism being arranged on the lower side of the symmetrical filter tank (1), the slag discharge mechanism being used to discharge the filter residue in the filter net bag (9), the slag discharge mechanism comprising a symmetrical slag discharge pipe (21), the symmetrical slag discharge pipe (21) being respectively fixed to the lower part of the symmetrical filter tank (1), the slag discharge pipe (21) passing through the adjacent filter tank (1), the slag discharge pipe (21) being communicated with the adjacent filter net bag (9), the slag discharge pipe (21) being slidably and sealingly connected to a sliding pipe (22), the upper part of the sliding pipe (22) being provided with slag discharge holes with circumferential equal spacing, the symmetrical support legs (101) being fixed with an electric push rod (23) electrically connected to the controller (7), the telescopic end of the electric push rod (23) being fixed to the adjacent sliding pipe (22) through a mounting plate; The filter tank (1) further comprises a filter liquid storage mechanism, the filter liquid storage mechanism being arranged in the symmetrical filter tank (1), the filter liquid storage mechanism being used to store part of the filtered oil and clean the filter net bag (9), the filter liquid storage mechanism comprising a symmetrical solid plate (24), the symmetrical solid plates (24) being respectively fixed in the symmetrical filter tank (1), the solid plates (24) being fixed and sealed to the adjacent slag discharge pipe (21), the solid plates (24) being provided with a through hole, the through hole of the solid plate (24) being provided with a one-way valve, the slag discharge pipe (21) being slidably connected to a sliding plate (25), the sliding plate ( 25) is slidably connected and sealed with the adjacent filter tank (1), a third elastic member (26) is fixedly connected between the sliding plate (25) and the adjacent filter tank (1), the slag discharge pipe (21) is slidably connected with a connecting ring, and a fourth elastic member (27) with circumferentially equal spacing is fixedly connected between the sliding connecting ring on the slag discharge pipe (21) and the adjacent filter tank (1), a pressure detection component is provided between the symmetrical filter tanks (1), the pressure detection component is used to sense the oil pressure in the liquid inlet pipe (3), and a recoil component is provided between the symmetrical filter tanks (1), the recoil component is used to clean the adjacent filter net bag (9); The recoil assembly includes a symmetrical connecting plate (32), the symmetrical connecting plates (32) are respectively fixed to the upper ends of the symmetrical first sliding rods (13), the first top cover (2) is slidably and sealedly connected to a fourth sliding rod (33), the fourth sliding rod (33) passes through the adjacent fixing ring (8), the fourth sliding rod (33) is slidably connected and sealed with the adjacent fixing ring (8), the fourth sliding rod (33) is fixed to an annular shell (34), the inner annular surface of the annular shell (34) is connected to nozzles distributed at equal intervals, the annular shell (34) is sleeved on the adjacent filter net bag (9), the annular shell (34) is connected to a symmetrical telescopic bellows (35), the bellows (35) passes through the two adjacent solid plates (24) and are sealed.

2. The filter with anti-shock function for petrochemical pipelines according to claim 1 is characterized by: A filter is installed at the lower end of the fixed pipe (10) for filtering impurities in the oil.

3. The filter with anti-shock function for petrochemical pipelines according to claim 1 is characterized by: The reset deceleration assembly includes symmetrical connecting tubes (16), the symmetrical connecting tubes (16) are respectively connected to the upper part of the symmetrical fixed tube (10), the outer end of the connecting tube (16) is provided with a circumferentially evenly spaced groove, a support plate (17) is fixedly connected in the connecting tube (16), the support plate (17) is slidably connected to a second sliding rod (18), one end of the second sliding rod (18) is fixedly connected to a mounting plate, the second sliding rod (18) is sleeved with a second elastic member (19), the two ends of the second elastic member (19) are respectively fixedly connected to the mounting plate of the adjacent second sliding rod (18) and the adjacent support plate (17), the other end of the second sliding rod (18) is fixedly connected to a cover (20), and the cover (20) cooperates with the adjacent connecting tube (16).

4. The filter with anti-shock function for petrochemical pipelines according to claim 1 is characterized by: The connection between the slag discharge pipe (21) and the adjacent filter net bag (9) is configured as an inclined surface to reduce filter residue residue.

5. The filter with anti-shock function for petrochemical pipelines according to claim 1 is characterized by: The elastic force of the fourth elastic member (27) is greater than that of the third elastic member (26), and the fourth elastic member (27) is used to perform multiple buffering on the sliding plate (25).

6. The filter with anti-shock function for petrochemical pipelines according to claim 5, characterized in that: The pressure detection assembly includes symmetrical fixed shells (28), the symmetrical fixed shells (28) are respectively fixed to the lower part of the symmetrical filter tank (1), an oil guide pipe (29) is connected between the fixed shell (28) and the liquid inlet pipe (3), a second sliding plug (30) is slidably and sealedly connected in the fixed shell (28), a third sliding rod (31) is slidably and sealedly connected in the fixed shell (28), the third sliding rod (31) is fixedly connected to the adjacent second sliding plug (30), and the third sliding rod (31) is fixedly connected to the adjacent sliding plate (25).

7. The filter with anti-shock function for petrochemical pipelines according to claim 1, characterized in that: The invention also includes an auxiliary slag discharge mechanism, which is arranged on the symmetrical fixed tube (10). The auxiliary slag discharge mechanism is used to clean the filter net bag (9) and the filter net of the fixed tube (10). The auxiliary slag discharge mechanism includes a symmetrical turbofan (36). The symmetrical turbofans (36) are respectively rotatably connected to the symmetrical fixed tube (10). The turbofan (36) is fixedly connected to a first n-shaped frame (37). The first n-shaped frame (37) is slidably matched with the adjacent fixed tube (10). The first n-shaped frame (37) is fixedly connected to a second n-shaped frame (38). The second n-shaped frame (38) is slidably matched with the adjacent filter net bag (9).

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