Production process of high-dispersion barite powder for oil and gas exploitation

Abstract

The invention discloses a production process of high-dispersion barite powder for oil and gas exploitation, and relates to the technical field of grinding processing devices, in particular to the production process of the high-dispersion barite powder for oil and gas exploitation. A plurality of filter plates capable of promoting materials to sequentially slide on the shell are rotationally arranged in the shell, and a rectangular communicating pipe is fixedly connected to the inner bottom surface of the shell. Through the arrangement of the shell, the feeding port, the filter plate, the water pump, the first communicating pipe, a second cavity, a first cavity, a first communicating port, a rectangular communicating pipe, a filter screen, a scraping plate and a deep backflushing mechanism, the effect of comprehensively cleaning barite can be achieved, the barite enters from the feeding port and naturally turns over when sliding down from the filter plate, and therefore the barite can be thoroughly cleaned. Water flow driven by a water pump is sprayed out from the first communicating opening, multi-surface flushing is achieved, and impurities in the grooves can be removed in a targeted mode through pulse type water flow.

Description

Technical Field

[0001] The present invention relates to the technical field of powder grinding processing equipment, and more specifically, to a production process of highly dispersed barite powder for oil and gas development. Background Art

[0002] Barite is a commonly used weighting agent in the oil and gas extraction field. The purity and dispersibility of its powder directly affect the performance of drilling fluid. Therefore, in the production of barite powder, the cleaning and subsequent processing of the raw ore are crucial. However, the existing barite processing technology still has obvious deficiencies in the cleaning and supporting links, which makes it difficult to meet the production needs of highly dispersed barite powder.

[0003] For example, the dust removal device and process for barite grinding processing with application number 202410713439.2, through the cooperation of dust removal components and collection components, enables the barite to fully contact with the water source, achieves softening and friction cleaning, and improves the cleanliness of dust removal and impurity removal to a certain extent.

[0004] However, this patented technology still has significant limitations: impurities removed during cleaning will remain in the cleaning water. When the barite is removed from the cleaning water, these residual impurities are easily attached to the surface again, resulting in a reduction in cleaning effect. At the same time, there are naturally many grooves on the surface of barite. It is difficult to penetrate into the grooves by simply soaking or rinsing with cleaning water, and it is impossible to completely remove the impurities hidden in them. These uncleaned impurities will be mixed into the powder during the subsequent crushing process, which will directly lead to a decrease in the purity of the barite powder and seriously affect its performance in oil and gas extraction. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a production process of highly dispersed barite powder for oil and gas development, which solves the problems raised in the above background technology.

[0006] The technical solutions of the present invention are as follows: To achieve the above objectives, the present invention is implemented through the following technical solutions: A production process for highly dispersed barite powder for oil and gas development, comprising the following steps: S1. Preliminary screening of the ore to select the ore with appropriate particle size and to remove impurities attached to the surface; S2, cleaning the screened ore with a cleaning device to remove impurities remaining on its surface; S3, air-drying the cleaned ore and then crushing it; S4. Grind the crushed ore to obtain a finished product.

[0007] The cleaning device includes an outer shell and a feed port arranged on the upper surface of the outer shell. A plurality of filter plates that can cause materials to slide onto them in sequence are rotatably arranged in the outer shell. A rectangular connecting pipe is fixedly connected to the inner bottom surface of the outer shell, and an elastic partition plate is fixedly connected to the front end of the upper surface of the rectangular connecting pipe, and the end of the elastic partition plate away from the rectangular connecting pipe is fixedly connected to the last filter plate from front to back, and the left and right ends of the elastic partition plate are fixedly connected to the inner side surface of the outer shell. A water pump that can pump water from the rear end of the rectangular connecting pipe is provided at the rear end of the outer shell, and the water pump can cause cleaning water to spray out from the upper surface of the filter plate. A filter screen that can move back and forth is provided in the middle of the rectangular connecting pipe, and a scraper that can scrape and clean the surface of the filter screen is provided on the front of the filter screen, and an inner storage box that can collect impurities scraped off is provided on the lower surface of the outer shell.

[0008] Preferably, the left and right ends of the filter plates are fixedly connected to a first rotating shaft having one end plugged into the inner side of the housing, and the front portion of the lower surface of each filter plate is provided with a reset component capable of causing the filter plate to reset, and the rear ends of the first filter plate and the second filter plate from front to back are fixedly connected to the upper surface of the elastic partition plate; The reset component includes a reset support plate fixedly connected to the inner side of the shell and a tension spring fixedly connected to the upper surface of the reset support plate. The rear end of the reset support plate abuts against the lower surface of the filter plate, and the end of the tension spring away from the reset support plate is fixedly connected to the filter plate.

[0009] Preferably, the water inlet end of the water pump is fixedly connected to a second connecting pipe with one end arranged at the rear end of the rectangular connecting pipe, the inner rear side of the outer shell is fixedly connected to a first auxiliary mounting plate, and the water pump is fixedly mounted on the lower surface of the first auxiliary mounting plate.

[0010] Preferably, a second cavity is defined in the elastic partition plate, and a first cavity is defined in the filter plate, and the first cavity is communicated with the second cavity, and the water outlet end of the water pump is fixedly connected to a first communicating tube having one end inserted into the elastic partition plate, and the first communicating tube and the elastic partition plate are fixedly connected; A plurality of first communication ports are evenly formed on the upper surface of the filter plate, and the first communication ports are communicated with the first cavity.

[0011] Preferably, the inner circumference of the rectangular connecting tube is slidably connected to a filter mounting plate, the filter screen is fixedly mounted on the filter mounting plate, and the upper and lower ends of the rear side of the filter mounting plate are fixedly connected to first sealing plates, and the end of the first first sealing plate from top to bottom away from the filter mounting plate is slidably connected in the rectangular connecting tube, and the end of the second first sealing plate from top to bottom away from the filter mounting plate is slidably connected in the outer shell.

[0012] Preferably, a first limiting groove is provided at the front end of the left and right side surfaces in the rectangular communicating tube, and the filter mounting plate is slidably connected to the second auxiliary mounting plate on the side close to the first limiting groove, one end of the scraper is fixedly connected to the lower surface of the second auxiliary mounting plate, the upper surface of the second auxiliary mounting plate is fixedly connected to the third spring, the top of the filter mounting plate close to the first limiting groove is fixedly connected to the synchronous moving plate, the end of the third spring away from the second auxiliary mounting plate is fixedly connected to the synchronous moving plate, the end of the second auxiliary mounting plate away from the filter mounting plate is fixedly connected to the fourth connecting rod, and the end of the fourth connecting rod away from the second auxiliary mounting plate is slidably connected in the first limiting groove, and baffles are rotatably connected at the grooves at the front end of the first limiting groove on the left and right sides of the rectangular communicating tube.

[0013] Preferably, the filter mounting plate is fixedly connected to a sliding limiting rod on one side away from the first limiting groove, and the sliding limiting rod is slidably connected to a second support plate on one end away from the filter mounting plate, and fixed sealing plates are fixedly connected to the upper and lower surfaces of the second support plate. From top to bottom, the end of the fixed sealing plate of the first layer away from the second support plate is fixedly connected to the rectangular connecting pipe, and from top to bottom, the end of the fixed sealing plate of the second layer away from the second support plate is fixedly connected to the housing, and the side of the second support plate close to the filter mounting plate is fixedly connected to a plurality of first springs, one end of which is arranged on the filter mounting plate. The lower surface of the shell is fixedly connected to an outer support box, the inner storage box is slidingly arranged in the outer support box and can be pulled outward, and the inner bottom surface of the shell is provided with a third communication port that can facilitate communication between the inner storage box and the shell.

[0014] Preferably, a filling plate is filled in one end of the elastic partition plate away from the filter plate, a third communicating tube having one end extending into the second cavity is fixedly connected to the upper surface of the rectangular communicating tube, and the third communicating tube and the filling plate are fixedly connected, and the bottom end of the third communicating tube can be communicated with the rectangular communicating tube, and a second communicating port having a size adapted to the opening of the third communicating tube is opened on the end of the first sealing plate close to the filter mounting plate from top to bottom; One end of the first communicating pipe away from the water pump passes through the filling plate, and the filling plate and the first communicating pipe are fixedly connected.

[0015] Preferably, the upper and lower ends of the filter mounting plate away from the first limiting groove are fixedly connected to the third connecting rod, and the end of the third connecting rod away from the filter mounting plate is fixedly connected to the second sealing plate.

[0016] Beneficial effects The present invention provides a production process for highly dispersed barite powder for oil and gas development, which has the following beneficial effects: The oil and gas development adopts a high-dispersion barite powder production process. Through the setting of the shell, feed port, filter plate, water pump, first connecting pipe, second cavity, first cavity, first connecting port, rectangular connecting pipe, filter screen, scraper and deep recoil mechanism, the barite can be fully cleaned. After the barite enters from the feed port, it naturally turns over when sliding on the filter plate, and is sprayed out from the first connecting port with the water flow driven by the water pump to achieve multi-surface flushing. The pulsed water flow can specifically remove impurities in the grooves, the filter screen filters the water quality, and the scraper and deep recoil mechanism automatically clean up impurities to ensure that the cleaning water is clean for a long time, providing a guarantee for continuous and efficient cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cross-sectional structural diagram of the housing of the present invention as viewed from the right side; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlarged in the middle; Figure 4 Schematic diagram of the cooperation structure of the second support plate, the fixed sealing plate and the sliding limit rod of the present invention; Figure 5 Schematic diagram of the partial structure of the filter plate of the present invention; Figure 6 This is a schematic diagram of the matching structure of the filter mounting plate and the second sealing plate of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the rectangular connecting pipe of the present invention when viewed from the front.

[0018] In the figure: 1. outer shell; 2. feed port; 3. filter plate; 4. elastic partition plate; 5. first auxiliary mounting plate; 6. water pump; 7. rectangular connecting pipe; 8. first connecting pipe; 9. second connecting pipe; 10. first cavity; 11. first connecting port; 12. first limiting groove; 13. baffle; 14. outer support box; 15. inner storage box; 16. second cavity; 17. filling plate; 18. third connecting pipe; 19. first sealing plate; 20. sliding groove; 24. second support plate; 25. fixed sealing plate; 26. first spring; 27. second sealing plate; 28. third connecting rod; 29. ​​second connecting port; 30. filter mounting plate; 31. filter screen; 32. second auxiliary mounting plate; 33. scraper; 34. third spring; 35. fourth connecting rod; 36. reset support plate; 37. tension spring; 38. sliding limiting rod. DETAILED DESCRIPTION

[0019] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1 In the existing barite processing technology, although there is a link for cleaning the barite before crushing it, the cleaning device currently used is often simple and rough, and most of the cleaning processes are completed by simply putting the barite into water and passing it through. Such a cleaning method may play a certain cleaning role for those parts of the barite surface that are more obvious and easily exposed to water, but it is difficult to play an effective cleaning effect for the many grooves on the barite surface. When the barite with many impurities on these surfaces is crushed, the impurities remaining in the grooves will be crushed along with the barite, and eventually mixed into the crushed barite powder. This will result in the barite powder obtained by crushing still having many impurities. This embodiment is specially invented to solve the above problems.

[0021] See also Figures 1 to 7 The present invention provides a technical solution: a production process of highly dispersed barite powder for oil and gas development, comprising the following steps: S1. Preliminary screening of the ore to select the ore with appropriate particle size and to remove impurities attached to the surface; S2, cleaning the screened ore with a cleaning device to remove impurities remaining on its surface; S3, air-drying the cleaned ore and then crushing it; S4. Grind the crushed ore to obtain a finished product.

[0022] The cleaning device includes a housing 1 and a feed port 2 arranged on the upper surface of the housing 1. A plurality of filter plates 3 are rotatably arranged in the housing 1 to enable the material to slide onto the filter plates in sequence. Figure 2As shown, there are three filter plates 3, which are arranged in sequence from top to bottom along the inner wall of the shell 1. When the barite enters the shell 1 from the feed port 2, it will first fall on the uppermost filter plate 3, and then slide along the uppermost filter plate 3 to the middle filter plate 3. During this sliding process, the barite will flip over with a high probability due to the change in the angle of the contact surface with the filter plate due to gravity. Similarly, when the barite continues to slide from the middle filter plate 3 to the lowermost filter plate 3, a similar flipping action will occur. A rectangular connecting pipe 7 is fixedly connected to the inner bottom surface of the shell 1, wherein the rectangular connecting pipe 7 is in an inverted U shape, and the front end of the upper surface of the rectangular connecting pipe 7 is fixedly connected to the elastic partition plate 4, and the end of the elastic partition plate 4 away from the rectangular connecting pipe 7 is fixedly connected to the last filter plate 3 from front to back, and the elastic partition plate 4 is fixedly connected to the last filter plate 3 from front to back. The left and right ends of the partition 4 are fixedly connected to the inner side of the shell 1, wherein the end of the elastic partition plate 4 away from the rectangular connecting pipe 7 is fixedly connected to a sealing soft plate. Through the coordinated action of the rectangular connecting pipe 7, the elastic partition plate 4 and the sealing soft plate, an independent cleaning area can be separated inside the shell 1, so that the water for cleaning the barite is confined to this area. A water pump 6 capable of pumping water from the rear end of the rectangular connecting pipe 7 is provided at the rear end of the shell 1, and the water pump 6 can cause the cleaning water to be sprayed from the upper surface of the filter plate 3. A filter screen 31 capable of moving back and forth is provided in the middle of the rectangular connecting pipe 7, and a scraper 33 capable of scraping and cleaning the surface of the filter screen 31 is provided on the front of the filter screen 31, and an inner storage box 15 capable of collecting impurities scraped off is provided on the lower surface of the shell 1; Therefore, when the water pump 6 is working, it can suck in the cleaning water at the bottom of the cleaning area from the front end of the rectangular connecting pipe 7. At the same time, with the help of the setting of the filter mesh 31, the cleaning water flowing through the rectangular connecting pipe 7 can be filtered, so that impurities in the water are trapped on the surface of the filter mesh 31.

[0023] The left and right ends of the filter plate 3 are fixedly connected to a first rotating shaft with one end inserted into the inner side of the shell 1, wherein the first rotating shaft and the shell 1 are rotatably connected. The front part of the lower surface of each filter plate 3 is provided with a reset component that can cause the filter plate 3 to reset. From front to back, the rear ends of the first filter plate 3 and the second filter plate 3 are fixedly connected to the upper surface of the elastic separator 4. At the same time, a 20 cm wide gap is left between the left and right ends of the filter plate 3 and the inner side wall of the shell 1, and the elastic separator 4 and the sealing soft plate are both made of rubber. The reset component includes a reset support plate 36 fixedly connected to the inner side of the housing 1 and a tension spring 37 fixedly connected to the upper surface of the reset support plate 36. The rear end of the reset support plate 36 abuts against the lower surface of the filter plate 3, and the end of the tension spring 37 away from the reset support plate 36 is fixedly connected to the filter plate 3. Therefore, when the rear end of the filter plate 3 is subjected to a downward pulling force, it will rotate clockwise (from Figure 2At this time, the tension spring 37 is synchronously stretched. When the tension disappears, the filter plate 3 can be driven to reset by the elastic restoring force of the tension spring 37.

[0024] The water inlet end of the water pump 6 is fixedly connected to a second connecting pipe 9 having one end arranged at the rear end of the rectangular connecting pipe 7. The inner rear side of the housing 1 is fixedly connected to a first auxiliary mounting plate 5. The water pump 6 is fixedly mounted on the lower surface of the first auxiliary mounting plate 5. Therefore, when the water pump 6 is working, the cleaning water in the rectangular communicating pipe 7 can be sucked into the water pump 6 by means of the diversion effect of the second communicating pipe 9 .

[0025] A second cavity 16 is defined in the elastic partition plate 4, and a first cavity 10 is defined in the filter plate 3, and the first cavity 10 is communicated with the second cavity 16, wherein a fourth communication port is defined on the inner bottom surface of the first cavity 10, and the fourth communication port sequentially penetrates the inner bottom surface of the first cavity 10 and the elastic partition plate 4, thereby enabling the first cavity 10 to communicate with the second cavity 16, and the water outlet end of the water pump 6 is fixedly connected to a first communicating pipe 8 inserted into the elastic partition plate 4 at one end, and the first communicating pipe 8 is fixedly connected to the elastic partition plate 4; A plurality of first communication openings 11 are evenly formed on the upper surface of the filter plate 3, and the first communication openings 11 are connected to the first cavity 10; Therefore, when the water pump 6 is working, the cleaning water entering the pump body of the water pump 6 will be transported to the second cavity 16 through the first connecting pipe 8, and after flowing into the first cavity 10 through the fourth connecting port, it will finally be ejected from the first connecting port 11 on the upper surface of the filter plate 3. The ejected water flow can directly flush the barite in the cleaning process, significantly improving the cleaning efficiency. In addition, combined with the characteristic of the multiple filter plates 3 that the barite is naturally turned over, comprehensive flushing of multiple surfaces of the barite can be achieved, thereby greatly optimizing the cleaning effect; At the same time, the continuous operation of the water pump 6 can significantly improve the cleanliness of the water in the cleaning area through the water circulation and filtration mechanism, thereby further enhancing the overall cleaning effect.

[0026] Example 2 In the above embodiment, although the barite can be flipped and flushed, a large amount of impurities will gradually adhere to the surface of the filter 31 during long-term use. As the impurities accumulate, the filtering efficiency of the filter 31 will be significantly attenuated, resulting in a decrease in the cleanliness of the water in the cleaning area, thereby greatly reducing the cleaning effect of the barite. This embodiment is specially invented to solve the above problem.

[0027] See also Figures 1 to 7, On the basis of the above embodiment, the technical solution adopted includes that the inner circumference of the rectangular connecting pipe 7 is slidably connected with a filter mounting plate 30, and the filter screen 31 is fixedly mounted on the filter mounting plate 30, wherein the lower surface of the filter mounting plate 30 is in contact with the inner bottom surface of the shell 1, and the other three side surfaces are in close contact with the inner wall of the rectangular connecting pipe 7. Through the coordinated arrangement of the filter mounting plate 30 and the filter screen 31, the front and rear sections of the rectangular connecting pipe 7 can be completely separated, so that the cleaning water can only flow through the filter screen 31. The upper and lower ends of the rear side of the filter mounting plate 30 are fixed. A first sealing plate 19 is fixedly connected, and the end of the first first sealing plate 19 from top to bottom away from the filter mounting plate 30 is slidably connected in the rectangular connecting tube 7, and the end of the second first sealing plate 19 from top to bottom away from the filter mounting plate 30 is slidably connected in the outer shell 1, wherein a sliding groove 20 is provided on the inner top surface of the rectangular connecting tube 7, and the upper first sealing plate 19 is slidably connected along the sliding groove 20. At the same time, a sliding groove 20 is also provided on the inner bottom surface of the outer shell 1, and the lower first sealing plate 19 is slidably connected along the sliding groove 20 on the inner bottom surface of the outer shell 1.

[0028] See also Figures 2 to 3 The front ends of the left and right sides of the rectangular connecting pipe 7 are both provided with first limiting grooves 12 (such as Figure 3The cam 32 is fixed on the second support frame 32 of the second support frame 30 so as to prevent the filter screen 31 from sliding out of the cam 32 and sliding in the cam 32. When the filter is in the working state, the filter screen 30 is in the working state, and the filter screen 30 is in the working state. When the filter is in the working state, the filter screen 30 is in the working state, and the filter screen 30 is in the working state. When the filter is in the working state, the filter screen 30 is in the working state, and the filter screen 30 is in the working state. When the filter is in the working state, the filter screen 30 is in the working state, and the filter screen 30 is in the working state. From the perspective of observation, the baffle 13 can only rotate in the clockwise direction, and returns to the initial position in the counterclockwise direction when resetting; Among them, the first limiting groove 12 is as follows Figure 3 As shown, it can be divided into a translation section, a vertical section and an inclined section; the tail end of the translation section is connected to the head end of the vertical section, the tail end of the vertical section is connected to the head end of the inclined section, and the tail end of the inclined section is connected to the head end of the translation section. The three together form a complete annular groove.

[0029] See also Figures 2 to 7The filter mounting plate 30 is fixedly connected to a sliding limiting rod 38 on one side away from the first limiting groove 12, and the sliding limiting rod 38 is slidably connected to a second support plate 24 at one end away from the filter mounting plate 30, and the upper and lower surfaces of the second support plate 24 are fixedly connected to a fixed sealing plate 25. From top to bottom, the end of the first layer of fixed sealing plate 25 away from the second support plate 24 is fixedly connected to the rectangular connecting pipe 7, and from top to bottom, the end of the second layer of fixed sealing plate 25 away from the second support plate 24 is fixedly connected to the housing 1, wherein there are four fixed sealing plates 25, respectively provided at the left and right ends of the upper and lower surfaces of the second support plate 24. With the help of the second support plate 24 and the arrangement of the four fixed sealing plates 25, the cleaning water entering the rectangular connecting pipe 7 can only pass between the two fixed sealing plates 25 in the horizontal direction, and the second support plate 24 is fixedly connected to a plurality of first springs 26 at one end of which are all provided on the filter mounting plate 30; Therefore, when the front side of the filter 31 is clogged, a negative pressure will be generated when the water pump 6 extracts the cleaning water in the rectangular connecting pipe 7. This is because the blockage on the surface of the filter 31 will reduce the effective cross-section through which water flows. According to the relationship between pressure and flow velocity in fluid mechanics, the reduction in the flow cross-section will cause the local water flow velocity to change, which in turn leads to a pressure difference in front and behind the filter 31. The pressure in the front side is relatively high due to the obstruction of water flow, while the pressure in the rear side is maintained at a low level due to the suction of the water pump. This pressure difference is manifested in the form of negative pressure. As the degree of blockage increases, the effective flow cross-section is further reduced, the front and rear pressure difference increases accordingly, and the negative pressure generated becomes more and more significant. Driven by this pressure difference, the filter screen 31 will move together with the filter mounting plate 30 toward the second support plate 24. At the same time, since the two ends of the first spring 26 are respectively connected to the filter mounting plate 30 and the second support plate 24, it will be gradually compressed as the filter mounting plate 30 moves, forming a storage of elastic potential energy.

[0030] An outer support box 14 is fixedly connected to the lower surface of the outer shell 1, and an inner storage box 15 is slidingly arranged in the outer support box 14 so as to be pulled outward, wherein a sealing ring is provided at the connection between the inner storage box 15 and the outer shell 1, and a third connecting port is opened on the inner bottom surface of the outer shell 1 to enable the inner storage box 15 to be connected with the outer shell 1.

[0031] Therefore, when the filter mounting plate 30 and the filter screen 31 move together in the direction close to the second support plate 24, the filter mounting plate 30 will drive the first sealing plate 19 to move synchronously. At the same time, the movement of the filter mounting plate 30 is transmitted to the second auxiliary mounting plate 32, the fourth connecting rod 35 and the third spring 34 through a rigid connection, so that these components form a coordinated movement.

[0032] Specifically, when the fourth connecting rod 35 moves, its end away from the second auxiliary mounting plate 32 will slide along the trajectory of the first limit groove 12 - this groove provides precise movement guidance for the fourth connecting rod 35 through mechanical constraints. In the initial state, the fourth connecting rod 35 is located in the translation section. At this time, the third spring 34 remains in a compressed state to store elastic potential energy. As the degree of clogging of the filter screen 31 increases, the filter mounting plate 30 continues to compress the first spring 26 and drives the third spring 34 to move synchronously. When the fourth connecting rod 35 slides into the vertical section, the constraint of the third spring 34 is released, and its stored elastic potential energy is instantly released, pushing the second auxiliary mounting plate 32 to move downward, thereby driving the scraper 33 to scrape the surface of the filter screen 31.

[0033] At the same time, the movement of the first sealing plate 19 completely exposes the third connecting port. At this time, the impurities scraped off by the scraper 33 can enter the inner storage box 15 through the unobstructed channel to be collected. When the impurities are removed, the flow cross-section of the filter screen 31 is restored, and the negative pressure state disappears. The first spring 26 releases the stored elastic potential energy and pushes the filter mounting plate 30 to reset in the direction away from the second support plate 24. During this process, the fourth connecting rod 35 slides along the inclined section, and with the help of the guiding effect of the inclined trajectory, the second auxiliary mounting plate 32 is driven to gradually return to its initial position, and the third spring 34 is compressed again to reserve energy for the next action.

[0034] In addition, the baffle 13 maintains a one-way limiting function under the action of the reset torsion spring. When the fourth connecting rod 35 passes over the baffle 13, the baffle 13 immediately resets, preventing the fourth connecting rod 35 from accidentally entering the inclined section through mechanical blocking, thereby ensuring the stability of the motion trajectory.

[0035] Therefore, even if the filter 31 is used for a long time, the surface can be automatically cleaned, thereby restoring its filtering efficiency, and then continuously maintaining the cleanliness of the washing water, and ultimately significantly improving the cleaning effect of the barite.

[0036] Example 3 In the above embodiment, although the self-cleaning of the filter 31 can continuously maintain the cleanliness of the cleaning water, thereby significantly improving the cleaning effect of the barite, in actual use, the filter 31 still faces the problem of deep clogging: from the pore characteristics of the filter medium, there is a pore distribution from the surface to the inside. When fine impurities with a particle size smaller than the surface pores but larger than the deep pores pass through with the water flow, under the action of the fluid driving force, these impurities will gradually penetrate into the internal pores of the filter 31. Such deeply embedded impurities are difficult to remove by scraping the surface. As the use time accumulates, they will continue to occupy the effective flow channel of the filter 31, causing its porosity to gradually decrease and the filtration resistance to increase. This embodiment is specially invented to solve the above problems.

[0037] See also Figures 2 to 7 The 3rd connecting pipe 18 is connected with the 3rd connecting pipe 18, and the 3rd connecting pipe 18 is connected with the 3rd connecting pipe 18. The end of the first connecting pipe 8 away from the water pump 6 passes through the filling plate 17, and the filling plate 17 and the first connecting pipe 8 are fixedly connected. With the coordinated arrangement of the first connecting pipe 8 and the third connecting pipe 18, the stability of the filling plate 17 can be further improved.

[0038] The third connecting rod 28 is fixedly connected to the upper and lower ends of the filter mounting plate 30 away from the first limiting groove 12 , and the second sealing plate 27 is fixedly connected to one end of the third connecting rod 28 away from the filter mounting plate 30 .

[0039] Among them, when the filter mounting plate 30 moves toward the direction close to the second support plate 24, it will drive the third connecting rod 28 and the second sealing plate 27 to move synchronously. Since the size of the second sealing plate 27 is adapted to the space between two adjacent fixed sealing plates 25 in the horizontal direction, when the second sealing plate 27 moves to between the corresponding two fixed sealing plates 25, the four fixed sealing plates 25, the two second sealing plates 27, the second support plate 24 and the sliding limit rod 38 will together form a closed "blocking plate".

[0040] At this time, a temporary "backflush space" is formed in the area between the "blocking plate" and the filter screen 31. When the second sealing plate 27 enters between the two fixed sealing plates 25, the second connecting port 29 is connected to the third connecting pipe 18 (at the same time, the second auxiliary mounting plate 32 moves downward synchronously), so that the cleaning water entering the second cavity 16 can flow into the "backflush space". Based on the principle of reverse impact of fluid, with the help of the reverse pressure of the water flow, these cleaning waters will form a backflush on the filter screen 31, thereby loosening and peeling off deeply embedded impurities - this reverse water flow can penetrate the pore structure of the filter screen 31, breaking the adsorption or interlocking state of impurities and the mesh, so that the deep impurities are effectively flushed out and then thoroughly scraped and cleaned by the scraper 33.

[0041] When the scraper 33 moves down to its maximum stroke, the first spring 26 releases its elastic potential energy, pushing the filter mounting plate 30 to reset in the direction away from the second support plate 24. During this process, the third connecting pipe 18 is disconnected from the second connecting port 29, and the second sealing plate 27 is also separated from the corresponding fixed sealing plate 25. The "recoil space" is then released, and the entire structure returns to its initial state.

[0042] At the same time, the cleaning device for barite grinding also integrates the same crushing components as the dust removal device and process for barite grinding with application number 202410713439.2, as well as a lifting device and an air-drying component for lifting the barite to the crushing component. Since these three types of components are all existing technologies, they will not be described here in detail. However, when the conveying shell in the lifting device rotates, it will cause the front end of the lowest filter plate 3 to lift upward, and then drive the rear ends of the remaining filter plates 3 to rotate downward synchronously through the elastic partition plate 4. When the conveying shell passes over the filter plate 3, with the help of the elastic restoring force of the tension spring 37, each filter plate 3 is restored to its original position, forming a regular shaking. This shaking can break the static friction balance between the barite and the surface of the filter plate 3, ensuring that the barite on the filter plate 3 can slide smoothly along the inclined surface to avoid retention.

[0043] At the same time, when the filter plate 3 rotates in the clockwise direction, its rear end will squeeze the upper surface of the elastic partition plate 4. The deformation of the elastic partition plate 4 will compress the internal space of the second cavity 16. The reduction in volume will cause the pressure of the cleaning liquid in the second cavity 16 to increase, thereby accelerating the ejection from the first connecting port 11. In addition, due to the intermittent movement of the conveying shell on the lowest filter plate 3, the cleaning water will be superimposed with intermittent high-pressure jets while maintaining normal ejection - this pulsed water flow can enhance the flushing effect of the grooves on the surface of the barite through periodic changes in pressure, and use the dynamic changes in the impact force of the water flow to break the attachment state of impurities and the grooves, thereby significantly improving the cleaning efficiency.

[0044] At the same time, after the water source added to the inside of the shell 1 reaches a suitable height, the barite enters the shell 1 from the feed port 2 and falls onto the filter plate 3, so that the barite is cleaned in the process of sliding on the filter plate 3. At the same time, although the filter mounting plate 30 can realize circulating filtration of the cleaning water to maintain its cleanliness, the cleaning water will still be gradually reduced due to the penetration of some tiny impurities into the filtration layer or the saturation of the water body's own pollution dissolving capacity during long-term use. Therefore, in order to ensure that the cleaning effect of the barite is stable and reliable, the cleaning water in the shell 1 needs to be regularly replaced as a whole; Secondly, the barite is air-dried before being crushed, and then the barite is crushed by two rotating grinding rollers. The crushing and air-drying process is the same as that disclosed in the dust removal device and process for barite grinding processing with application number 202410713439.2, so it will not be described in detail. The staff can regularly pull out the inner storage box 15 to dump the collected impurities. In addition, when the inner storage box 15 is pulled out, cleaning water still remains in the box, so the operator needs to dump the remaining cleaning water together and then add an appropriate amount of cleaning water to the outer shell 1.

[0045] In summary, when the oil and gas development high-dispersion barite powder production process is used, the orderly connection of each step and the coordinated cooperation of each component of the device can achieve efficient and stable production of high-dispersion barite powder for oil and gas development. Specifically, the operator first adds an appropriate amount of water to the inside of the shell 1 to a suitable height, and then the barite enters the shell 1 from the feed port 2 and falls onto the filter plate 3; As the barite slides down the inclined surface on the filter plate 3, it naturally flips due to the change in the angle of contact with the filter plate 3 due to gravity. At the same time, the water pump 6 works to cause the cleaning water to be ejected from the first connecting port 11 on the upper surface of the filter plate 3 through the first connecting pipe 8, the second cavity 16, and the first cavity 10. The water flow directly washes the surface of the barite. Combined with the flipping characteristics, comprehensive cleaning of multiple surfaces is achieved. In particular, the pulsed high-pressure water flow can specifically flush the surface grooves and effectively remove hidden impurities. The filter screen 31 in the rectangular connecting pipe 7 filters the washing water flowing through and intercepts impurities in the water. Combined with the scraper 33 on the front and the deep recoil mechanism, it can automatically clean impurities on the surface and in the pores, ensuring that the washing water is clean for a long time and providing protection for continuous cleaning.

[0046] The cleaned barite is transported to the air-drying component through the lifting device for air-drying to remove surface moisture and prevent moisture from affecting the subsequent crushing process. The dried barite is then sent to the crushing component and crushed by two rotating grinding rollers. The drying process ensures the dispersibility of the barite powder, and the crushing process forms a powder that meets the requirements through the extrusion and grinding of the grinding rollers. In this step, the conveying shell of the lifting device and the filter plate 3 are shaken in coordination to ensure the smooth transfer of barite and avoid retention affecting the continuity of the process.

[0047] The impurities collected in the inner storage box 15 need to be pulled out and cleaned regularly by the staff. When pulling it out, the cleaning water remaining in the box needs to be poured out together, and then an appropriate amount of cleaning water is added to the outer shell 1. This operation is ensured by the sealing ring at the connection between the inner storage box 15 and the outer shell 1 to ensure the sealing, prevent water leakage, and ensure that the water in the cleaning area always maintains an appropriate amount.

[0048] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0050] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A process for producing highly dispersed barite powder for oil and gas development, characterized in that: The following steps are involved: S1. Preliminary screening of the ore to select the ore with appropriate particle size and to remove impurities attached to the surface; S2, cleaning the screened ore with a cleaning device to remove impurities remaining on its surface; S3, air-drying the cleaned ore and then crushing it; S4. Grind the crushed ore to obtain a finished product. The cleaning device includes a housing (1) and a feed port (2) provided on the upper surface of the housing (1). A plurality of filter plates (3) are rotatably provided in the housing (1) to enable materials to slide onto the filter plates in sequence. The inner bottom surface of the housing (1) is fixedly connected to a rectangular connecting pipe (7), and the front end of the upper surface of the rectangular connecting pipe (7) is fixedly connected to an elastic partition plate (4). The end of the elastic partition plate (4) away from the rectangular connecting pipe (7) is fixedly connected to the last filter plate (3) from the front to the back, and the left and right ends of the elastic partition plate (4) are fixedly connected. Connected to the inner side of the housing (1), the rear end of the housing (1) is provided with a water pump (6) capable of pumping water from the rear end of the rectangular connecting pipe (7), and the water pump (6) can cause the cleaning water to be sprayed out from the upper surface of the filter plate (3), the middle part of the rectangular connecting pipe (7) is provided with a filter screen (31) capable of moving forward and backward, the front of the filter screen (31) is provided with a scraper (33) capable of scraping and cleaning the surface of the filter screen (31), and the lower surface of the housing (1) is provided with an inner storage box (15) capable of collecting the scraped impurities.

2. A process for producing highly dispersed barite powder for oil and gas development according to claim 1, characterized in that: The left and right ends of the filter plates (3) are fixedly connected to a first rotating shaft with one end plugged into the inner side of the housing (1); the front portion of the lower surface of each filter plate (3) is provided with a reset component capable of causing the filter plate (3) to reset; and the rear ends of the first filter plate (3) and the second filter plate (3) from front to back are fixedly connected to the upper surface of the elastic partition plate (4); The reset component comprises a reset support plate (36) fixedly connected to the inner side of the housing (1) and a tension spring (37) fixedly connected to the upper surface of the reset support plate (36); the rear end of the reset support plate (36) abuts against the lower surface of the filter plate (3), and the end of the tension spring (37) away from the reset support plate (36) is fixedly connected to the filter plate (3).

3. A process for producing highly dispersed barite powder for oil and gas development according to claim 2, characterized in that: The water inlet end of the water pump (6) is fixedly connected to a second connecting pipe (9) whose end is arranged at the rear end of the rectangular connecting pipe (7); the inner rear side of the housing (1) is fixedly connected to a first auxiliary mounting plate (5); and the water pump (6) is fixedly mounted on the lower surface of the first auxiliary mounting plate (5).

4. A cleaning device for barite grinding according to claim 1, characterized in that: A second cavity (16) is provided in the elastic partition plate (4), and a first cavity (10) is provided in the filter plate (3), and the first cavity (10) is communicated with the second cavity (16); a water outlet end of the water pump (6) is fixedly connected to a first communicating pipe (8) having one end plugged into the elastic partition plate (4), and the first communicating pipe (8) and the elastic partition plate (4) are fixedly connected; A plurality of first communication openings (11) are evenly formed on the upper surface of the filter plate (3), and the first communication openings (11) are in communication with the first cavity (10).

5. The process for producing highly dispersed barite powder for oil and gas development according to claim 1, wherein: The inner circumferential surface of the rectangular connecting tube (7) is slidably connected to a filter mounting plate (30), the filter screen (31) is fixedly mounted on the filter mounting plate (30), and the upper and lower ends of the rear side of the filter mounting plate (30) are fixedly connected to first sealing plates (19), and the end of the first first sealing plate (19) away from the filter mounting plate (30) from top to bottom is slidably connected in the rectangular connecting tube (7), and the end of the second first sealing plate (19) away from the filter mounting plate (30) from top to bottom is slidably connected in the housing (1).

6. A process for producing highly dispersed barite powder for oil and gas development according to claim 5, characterized in that: The front ends of the left and right sides of the rectangular connecting tube (7) are both provided with first limiting grooves (12), and the side of the filter mounting plate (30) close to the first limiting groove (12) is slidably connected to a second auxiliary mounting plate (32), one end of the scraper (33) is fixedly connected to the lower surface of the second auxiliary mounting plate (32), the upper surface of the second auxiliary mounting plate (32) is fixedly connected to a third spring (34), the top of the filter mounting plate (30) close to the first limiting groove (12) is fixedly connected to a synchronous moving plate, one end of the third spring (34) away from the second auxiliary mounting plate (32) is fixedly connected to the synchronous moving plate, one end of the second auxiliary mounting plate (32) away from the filter mounting plate (30) is fixedly connected to a fourth connecting rod (35), and one end of the fourth connecting rod (35) away from the second auxiliary mounting plate (32) is slidably connected to the first limiting groove (12), and baffles (13) are rotatably connected to the grooves at the front ends of the left and right sides of the rectangular connecting tube (7) close to the first limiting groove (12).

7. A process for producing highly dispersed barite powder for oil and gas development according to claim 6, characterized in that: The filter mounting plate (30) is fixedly connected to a sliding limiting rod (38) on one side away from the first limiting groove (12), and the sliding limiting rod (38) is slidably connected to a second support plate (24) on one end away from the filter mounting plate (30). The upper and lower surfaces of the second support plate (24) are fixedly connected to fixed sealing plates (25). From top to bottom, the end of the first layer of fixed sealing plates (25) away from the second support plate (24) is fixedly connected to the rectangular connecting pipe (7), and the end of the second layer of fixed sealing plates (25) away from the second support plate (24) is fixedly connected to the housing (1). The second support plate (24) is fixedly connected to a side close to the filter mounting plate (30) with a plurality of first springs (26) whose ends are all arranged on the filter mounting plate (30). The lower surface of the outer shell (1) is fixedly connected to an outer support box (14), the inner storage box (15) is slidably arranged in the outer support box (14) so ​​as to be pulled outward, and the inner bottom surface of the outer shell (1) is provided with a third communication port that can facilitate communication between the inner storage box (15) and the outer shell (1).

8. A process for producing highly dispersed barite powder for oil and gas development according to claim 7, characterized in that: The elastic partition plate (4) is filled with a filling plate (17) at one end away from the filter plate (3), and the upper surface of the rectangular connecting tube (7) is fixedly connected to a third connecting tube (18) whose one end extends into the second cavity (16), and the third connecting tube (18) and the filling plate (17) are fixedly connected, and the bottom end of the third connecting tube (18) can be connected to the rectangular connecting tube (7), and the first end of the first sealing plate (19) close to the filter mounting plate (30) from top to bottom is provided with a second connecting port (29) that is adapted to the size of the opening of the third connecting tube (18); One end of the first connecting pipe (8) away from the water pump (6) passes through the filling plate (17), and the filling plate (17) and the first connecting pipe (8) are fixedly connected.

9. The process for producing highly dispersed barite powder for oil and gas development according to claim 8, characterized in that: The upper and lower ends of the filter mounting plate (30) away from the first limiting groove (12) are fixedly connected to a third connecting rod (28), and one end of the third connecting rod (28) away from the filter mounting plate (30) is fixedly connected to a second sealing plate (27).

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