Anti-backflow filter for weak acid cleaning
By designing a cleaning device in the pickling filter, using the cooperation of scraper, L plate, screw, collection box and U-shaped plate, the problem of increasing filter resistance caused by impurities attached to the inner wall of the pickling filter is solved, and the filtration effect is achieved. Improved recovery and filtration efficiency.
Patent Information
- Application Number
- CN202420068541.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-11
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-01-11
AI Technical Summary
The inner wall of existing pickling filters will gradually adhere to impurities, resulting in an increase in filtration resistance and affecting the filtration effect.
An anti-reflow filter for weak acid cleaning is designed, equipped with cleaning devices, including scrapers, L plates, screws, collection boxes and U-shaped plates. Through the mutual cooperation of these components, it is possible to disassemble the filter screen cartridge when disassembly. Effectively clean and scrape away impurities attached to the inner wall.
By cleaning up impurities attached to the inner wall, the impurities are prevented from clogging the pores of the filter screen cartridge, the effective filter area of the filter screen cartridge is restored, and the filtration efficiency is improved.
Smart Images
Figure CN222427281U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of weak acid cleaning filters, in particular to a weak acid cleaning anti-backflow filter. Background Art
[0002] The weak acid online cleaning process is designed to be constructed by injecting surfactants and weak acids alternately every other day. A high-pressure filter is installed at the end of the pipeline to prevent insoluble solid particles from entering the wellbore and causing blockage. The weak acid system is a polyhydrogen acid system with slow and low corrosion characteristics, which can effectively control safety and environmental risks such as process perforation and leakage.
[0003] The above-mentioned and existing related technologies often have the following defects: cleaning of the pickling filter is a crucial link. After long-term use, impurities will gradually adhere to the inner wall of the pickling filter. The impurities will easily clog the pores of the filter screen, resulting in increased filtration resistance, thereby affecting the normal operation of the pickling filter and reducing the filtration effect of the filter screen.
[0004] Therefore, the utility model provides a filter for cleaning the backflow prevention with weak acid. Utility Model Content
[0005] The utility model aims to solve the problem in the prior art that impurities gradually adhere to the inner wall of the acid-washed filter, which easily clogs the pores of the filter screen and increases the filtration resistance, and proposes a filter for weak acid cleaning to prevent backflow.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a filter for weak acid cleaning and backflow prevention, comprising a pickling filter, a valve, a pressure relief cover and a pressure gauge, the surface of the pickling filter is connected with a pipeline, the inner wall of the pickling filter is slidably connected with a filter screen cylinder, the surface of the filter screen cylinder is provided with a cleaning device, the cleaning device comprises two rectangular grooves, both of which are opened on the surface of the filter screen cylinder, the inner walls of the two rectangular grooves are slidably connected with an L-plate, the short arms of the two L-plates are fixedly connected with a scraper, the surface of the filter screen cylinder is threadedly connected with two screws, the two screws are threadedly connected to the L-plate, the surface of the pickling filter is fixedly connected with a U-shaped plate, and a collection box is placed on the surface of the U-shaped plate.
[0007] The effect achieved by the above components is: by setting up a cleaning device and utilizing the mutual cooperation between the scraper, L-plate, screw, collecting box and U-shaped plate, impurities attached to the inner wall of the pickling filter can be effectively cleaned and scraped off during the disassembly of the filter screen cartridge to avoid impurities clogging the pores of the filter screen cartridge. Cleaning impurities attached to the inner wall helps to restore the effective filtration area of the filter screen cartridge.
[0008] Preferably, flexible pads are glued onto the surfaces of the two screw rods, and the flexible pads are made of rubber.
[0009] The effect achieved by the above components is that the flexible pad is against the inner wall of the rectangular groove, and the flexible pad protects the rectangular groove, thereby preventing the screw from directly contacting the inner wall of the rectangular groove and causing wear.
[0010] Preferably, the surface of the U-shaped plate slides through a limiting rod, the limiting rod passes through the collecting box, the surface of the U-shaped plate is fixedly connected to two limiting plates, and the collecting box rests on the surface of the limiting plates.
[0011] The effects achieved by the above components are: the limiting rod can limit the position of the collection box to prevent the collection box from falling during the cleaning of the filter screen, thereby improving the stability of the collection box, and the limiting plate can facilitate the insertion of the limiting rod into the collection box.
[0012] Preferably, the arc surface of the limiting rod is sleeved with a first spring, and two ends of the first spring are respectively fixedly connected to the U-shaped plate and the limiting rod.
[0013] The effect achieved by the above-mentioned components is: when the limit rod is opened, the first spring begins to contact its own elastic force to drive the limit rod to be inserted into the collection box, and the first spring achieves the effect of automatically resetting the limit rod. At the same time, the first spring can fix the position of the limit rod to avoid the limit rod being out of contact with the collection box and being lost.
[0014] Preferably, a limit device is provided on the surface of the valve, and the limit device includes a circular plate, which is rotatably connected to the valve, and a square groove is opened on the surface of the circular plate. A second spring is fixedly connected to the surface of the circular plate, and a handle is fixedly connected to the other end of the second spring. A limit block is fixedly connected to the surface of the handle, and the limit block is located in the second spring, and the limit block is slidably connected to the inner wall of the square groove.
[0015] The effect achieved by the above components is: by setting a limit device and utilizing the mutual cooperation between the circular plate, the second spring, the handle, the limit block and the square groove parts, the handle can be made to rotate idly, thereby preventing the handle from accidentally rotating due to external force, thereby improving the safety of the acid washing filter operation.
[0016] Preferably, a guide block is fixedly connected to the surface of the limit block, and the guide block is an inclined surface.
[0017] The effect achieved by the above components is that the handle drives the limit block and the guide block to move, and the guide block facilitates the insertion of the limit block into the round rod.
[0018] Preferably, a rubber sheet is glued to the surface of the circular plate, and the rubber sheet is located on the inner wall of the square groove.
[0019] The effect achieved by the above components is that the rubber sheet is stretched open by its own flexibility, and the rubber sheet prevents foreign matter from entering the square groove, thereby preventing the square groove from being blocked by foreign matter and affecting the opening or closing of the valve.
[0020] In summary:
[0021] 1. In the utility model, by providing a cleaning device and utilizing the cooperation among the scraper, L-plate, screw, collecting box and U-shaped plate, impurities attached to the inner wall of the pickling filter can be effectively cleaned and scraped off during the process of disassembling the filter screen cylinder, thereby preventing the impurities from clogging the pores of the filter screen cylinder. Cleaning the impurities attached to the inner wall helps to restore the effective filtering area of the filter screen cylinder, thereby improving the filtering efficiency of the filter screen cylinder.
[0022] 2. In the utility model, by setting a limit device and utilizing the mutual cooperation among the circular plate, the second spring, the handle, the limit block and the square groove parts, the handle can be made to rotate idly, thereby preventing the handle from accidentally rotating due to external force, thereby improving the safety of the acid washing filter operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the filter screen cylinder of the utility model;
[0025] Figure 3 This is a schematic diagram of the disassembled structure of the scraper of the utility model;
[0026] Figure 4 It is a structural schematic diagram of the limit rod of the utility model;
[0027] Figure 5 For this utility model Figure 1 Schematic diagram of the local structure;
[0028] Figure 6 It is a structural schematic diagram of the pressure gauge of the utility model.
[0029] Legend: 1. Pickling filter; 2. Pipeline; 3. Pressure gauge; 4. Valve; 5. Filter screen; 6. Cleaning device; 601. Scraper; 602. L-plate; 603. Screw; 604. Rectangular groove; 605. U-shaped plate; 606. Limit plate; 607. Collecting box; 608. Limit rod; 609. First spring; 610. Flexible pad; 7. Limit device; 71. Round plate; 72. Second spring; 73. Handle; 74. Limit block; 75. Guide block; 76. Rubber sheet; 8. Pressure relief cover. DETAILED DESCRIPTION
[0030] Reference Figure 1 and Figure 2 As shown, the utility model provides a technical solution: a filter for weak acid cleaning and backflow prevention, comprising a pickling filter 1, a valve 4, a pressure relief cover 8 and a pressure gauge 3, the surface of the pickling filter 1 is connected with a pipe 2, the inner wall of the pickling filter 1 is slidably connected with a filter screen cylinder 5, the surface of the filter screen cylinder 5 is provided with a cleaning device 6, and the surface of the valve 4 is provided with a limit device 7.
[0031] The specific arrangement and function of the cleaning device 6 and the limiting device 7 will be described in detail below.
[0032] Reference Figure 2 — Figure 4As shown, in this embodiment: the cleaning device 6 includes two rectangular grooves 604, the two rectangular grooves 604 are both opened on the surface of the filter screen cylinder 5, the inner walls of the two rectangular grooves 604 are slidably connected with L plates 602, the short arms of the two L plates 602 are fixedly connected with scrapers 601, the surface of the filter screen cylinder 5 is threadedly connected with two screws 603, the two screws 603 are threadedly connected with the L plates 602, the surface of the pickling filter 1 is fixedly connected with a U-shaped plate 605, and the surface of the U-shaped plate 605 is placed with a collecting box 607. By setting the cleaning device, the scrapers 601, L The cooperation between the plate 602, the screw 603, the collecting box 607 and the U-shaped plate 605 can effectively clean and scrape the impurities attached to the inner wall of the pickling filter 1 during the disassembly of the filter sieve cylinder 5, so as to prevent the impurities from clogging the pores of the filter sieve cylinder 5. Cleaning the impurities attached to the inner wall helps to restore the effective filtering area of the filter sieve cylinder 5. The surfaces of the two screws 603 are glued with flexible pads 610, which are made of rubber. The flexible pads 610 are against the inner wall of the rectangular groove 604. The flexible pads 610 protect the rectangular groove 604 and prevent the screws 60 3 directly contacts the inner wall of the rectangular groove 604 and causes wear. The surface of the U-shaped plate 605 slides through the limiting rod 608, and the limiting rod 608 penetrates the collecting box 607. The surface of the U-shaped plate 605 is fixedly connected with two limiting plates 606. The collecting box 607 abuts against the surface of the limiting plate 606. The limiting rod 608 can limit the position of the collecting box 607 to avoid the collection box 607 from falling during the cleaning process of the filter sieve drum 5, thereby improving the stability of the collecting box 607. The limiting plate 606 can facilitate the limiting rod 606 to be moved. 8 is inserted into the collection box 607, the arc surface of the limit rod 608 is sleeved with a first spring 609, and the two ends of the first spring 609 are respectively fixedly connected to the U-shaped plate 605 and the limit rod 608, and the limit rod 608 is opened. At this time, the first spring 609 begins to contact its own elastic force to drive the limit rod 608 to be inserted into the collection box 607, and the first spring 609 achieves the effect of automatically resetting the limit rod 608. At the same time, the first spring 609 can fix the position of the limit rod 608 to avoid the limit rod 608 being lost due to loss of contact with the collection box 607.
[0033] Reference Figure 5As shown, specifically, the limiting device 7 includes a circular plate 71, which is rotatably connected to the valve 4, a square groove 77 is opened on the surface of the circular plate 71, a second spring 72 is fixedly connected to the surface of the circular plate 71, the other end of the second spring 72 is fixedly connected to a handle 73, and a limiting block 74 is fixedly connected to the surface of the handle 73. The limiting block 74 is located in the second spring 72, and the limiting block 74 is slidably connected to the inner wall of the square groove 77. By setting the limiting device 7, the circular plate 71, the second spring 72, the handle 73, the limiting block 74 and the square groove 77 are used to cooperate with each other, so as to achieve the effect of idling the handle 73, and avoid the handle 73 from rotating. The hand 73 is accidentally rotated by external force, thereby improving the safety of the operation of the pickling filter 1. The surface of the limit block 74 is fixedly connected with a guide block 75, and the guide block 75 is inclined. The handle 73 will drive the limit block 74 and the guide block 75 to move. The guide block 75 facilitates the insertion of the limit block 74 into the round rod. The surface of the circular plate 71 is glued with a rubber sheet 76, and the rubber sheet 76 is located on the inner wall of the square groove 77. The rubber sheet 76 is stretched open by its own flexibility. The rubber sheet 76 prevents foreign matter from entering the square groove 77, thereby preventing the square groove 77 from being blocked by foreign matter and affecting the opening or closing of the valve 4.
[0034] Working principle: when the pickling filter 1 needs to be cleaned, the staff first rotates the pressure relief cover 8 to remove the pressure relief cover 8, and then pulls the limiting rod 608, and the limiting rod 608 slides along the surface of the U-shaped plate 605. At the same time, the limiting rod 608 will stretch the first spring 609 to make the limiting rod 608 disengage from the U-shaped plate 605, and then place the collection box 607 above the U-shaped plate 605 so that the collection box 607 rests on the surface of the limiting plate 606, and then release the limiting rod 608. At this time, the first spring 609 begins to contact its own elastic force to drive the limiting rod 608 to insert into the collection box 607, and the limiting rod 608 reaches a position that can be used to close the collection box 607. The first spring 609 can automatically reset the limiting rod 608, and at the same time, the first spring 609 can fix the position of the limiting rod 608, so as to prevent the limiting rod 608 from losing contact with the collecting box 607 and causing it to be lost. The limiting plate 606 can facilitate the insertion of the limiting rod 608 into the collecting box 607, and then the filtering sieve drum 5 is pulled toward the collecting box 607, and the filtering sieve drum 5 will drive the scraper 601 to slide along the inner wall of the pickling filter 1. , so that the impurities attached to the inner wall of the pickling filter 1 can be scraped off, and the scraped impurities will fall into the collection box 607, which is convenient for the staff to clean up in a centralized manner. When the scraper 601 needs to be replaced, the staff rotates the screw 603 to disengage the screw 603 from the long arm of the L plate 602, and then pulls the scraper 601, and the scraper 601 is disengaged from the filter screen 5, and the scraper 601 is disassembled. Then the new scraper 601 is installed, and the L plate 602 slides along the inner wall of the rectangular groove 604, and then the screw 603 is rotated again, and the screw 603 moves with the help of the thread between the filter screen 5 and the L plate 602 until The flexible pad 610 is against the inner wall of the rectangular groove 604, and the flexible pad 610 protects the rectangular groove 604 to prevent the screw 603 from directly contacting the inner wall of the rectangular groove 604 and causing wear. By setting up a cleaning device and utilizing the cooperation between the scraper 601, the L plate 602, the screw 603, the collecting box 607 and the U-shaped plate 605, the impurities attached to the inner wall of the pickling filter 1 can be effectively cleaned and scraped off during the disassembly of the filter screen cartridge 5 to prevent the impurities from clogging the pores of the filter screen cartridge 5. Cleaning the impurities attached to the inner wall helps to restore the effective filtering area of the filter screen cartridge 5, thereby improving the filtering efficiency of the filter screen cartridge 5.
[0035] When opening the valve 4, it is necessary to use the limit device 7 to open the valve 4. First, the staff presses the handle 73 in the direction close to the circular plate 71, and the handle 73 will drive the limit block 74 and the guide block 75 to move. The guide block 75 is used to facilitate the insertion of the limit block 74 into the round rod. The handle 73 will squeeze the second spring 72 at the same time. When the guide block 75 contacts the rubber sheet 76, the rubber sheet 76 is stretched open by its own flexibility. The rubber sheet 76 prevents foreign matter from entering the square groove 77, thereby preventing the square groove 77 from being blocked by foreign matter and affecting the opening or closing of the valve 4. Then continue to press down the handle 73 to insert the limit block 74 and the guide block 75 into the square groove 77 opened on the surface of the circular plate 71, and then turn the handle 73. The handle 73 drives the circular plate 71 to rotate, so that the circular plate 71 can When the locking cam 75 is in the closed position, the locking cam 73 is in the closed position, and the locking cam 73 is in the open position, so that the locking cam 73 is in the open position, and the locking cam 73 is in the open position.
[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
Claims
1. A filter for weak acid cleaning and backflow prevention, comprising an acid cleaning filter (1), a valve (4), a pressure relief cover (8) and a pressure gauge (3), wherein the surface of the acid cleaning filter (1) is connected to a pipeline (2), the inner wall of the acid cleaning filter (1) is slidably connected to a filter screen cylinder (5), and the surface of the filter screen cylinder (5) is provided with a cleaning device (6), characterized in that: The cleaning device (6) comprises two rectangular grooves (604), the two rectangular grooves (604) are both opened on the surface of the filter screen cylinder (5), the inner walls of the two rectangular grooves (604) are both slidably connected to an L-plate (602), the short arms of the two L-plates (602) are both fixedly connected to a scraper (601), the surface of the filter screen cylinder (5) is threadedly connected to two screw rods (603), the two screw rods (603) are both threadedly connected to the L-plate (602), the surface of the pickling filter (1) is fixedly connected to a U-shaped plate (605), and a collection box (607) is placed on the surface of the U-shaped plate (605).
2. A filter for weak acid cleaning and backflow prevention according to claim 1, characterized in that: The surfaces of the two screw rods (603) are both glued with flexible pads (610), and the flexible pads (610) are made of rubber.
3. The filter for weak acid cleaning and backflow prevention according to claim 1, characterized in that: The surface of the U-shaped plate (605) slides through a limiting rod (608), the limiting rod (608) penetrates the collecting box (607), the surface of the U-shaped plate (605) is fixedly connected to two limiting plates (606), and the collecting box (607) rests on the surface of the limiting plates (606).
4. A filter for cleaning backflow prevention with weak acid according to claim 3, characterized in that: The arc surface of the limiting rod (608) is sleeved with a first spring (609), and the two ends of the first spring (609) are respectively fixedly connected to the U-shaped plate (605) and the limiting rod (608).
5. The filter for weak acid cleaning and backflow prevention according to claim 1, characterized in that: A limit device (7) is provided on the surface of the valve (4), and the limit device (7) comprises a circular plate (71), the circular plate (71) is rotatably connected to the valve (4), a square groove (77) is provided on the surface of the circular plate (71), a second spring (72) is fixedly connected to the surface of the circular plate (71), the other end of the second spring (72) is fixedly connected to a handle (73), a limit block (74) is fixedly connected to the surface of the handle (73), the limit block (74) is located in the second spring (72), and the limit block (74) is slidably connected to the inner wall of the square groove (77).
6. A filter for cleaning backflow prevention with weak acid according to claim 5, characterized in that: A guide block (75) is fixedly connected to the surface of the limit block (74), and the guide block (75) is an inclined surface.
7. The filter for cleaning the backflow prevention with weak acid according to claim 5, characterized in that: A rubber sheet (76) is glued to the surface of the circular plate (71), and the rubber sheet (76) is located on the inner wall of the square groove (77).