Petrochemical control valve

Abstract

The petrochemical engineering control valve relates to the technical field of control valves and comprises a shell, holes are symmetrically formed in the outer side face of the shell, a liquid inlet is fixedly connected to the outer side face of the shell, and a liquid outlet is fixedly connected to the side, away from the liquid inlet, of the shell. An inner cavity of the liquid inlet is in threaded connection with a filtering mechanism, and the filtering mechanism is used for filtering and discharging large impurities in petrochemical engineering transfer liquid; a valve mechanism is arranged at the position of an inner cavity of the shell and used for controlling circulation of petrochemical engineering transfer liquid in the inner cavity of the shell, the valve mechanism comprises a rotating cylinder, the rotating cylinder is rotationally connected to the position of the inner cavity of the shell, and communicating openings are symmetrically formed in the outer side face of the rotating cylinder; and communicating openings symmetrically formed in the outer side face of the rotating cylinder are aligned with holes symmetrically formed in the outer side face of the shell, and the shell is arranged, and the holes are symmetrically formed in the outer side face of the shell, so that the effect of preventing the interior of the valve from being blocked after long-time use is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of control valves, and particularly to a petrochemical control valve. Background Art

[0002] Petrochemical control valves are the core equipment for achieving precise fluid regulation in the petrochemical production process, and their performance directly affects the safety, stability and energy efficiency level of the process system. As a key actuator in the process industry, the control valve changes the cross-sectional area of the flow passage by adjusting the displacement of the valve core, thereby achieving precise control of process parameters such as flow rate, pressure and temperature. Under harsh working conditions such as high temperature and pressure, strong corrosion and easy coking, petrochemical control valves must have excellent sealing performance, erosion resistance and reliable action characteristics to meet the stringent requirements of continuous production. Modern control valves adopt a modular design concept, reduce fluid noise and cavitation risk by optimizing the flow path profile, apply hard alloy surfacing or ceramic coatings to improve wear resistance, and introduce intelligent positioners and digital communication interfaces to achieve remote monitoring and adaptive adjustment. In typical devices such as catalytic cracking, hydrofining and ethylene cracking, the response speed, adjustment accuracy and sealing grade of the control valve directly affect the product quality and the operation cycle of the device. With the development of petrochemical processes towards large-scale and refined, control valves are continuously innovating in the directions of high pressure difference adaptation, intelligent diagnosis and low leakage, providing an important guarantee for improving production efficiency and achieving intrinsic safety.

[0003] The accumulation of dirt and blockages inside the petrochemical control valve during operation will have a serious impact on the production system. With the continuous deposition of solid particles, polymers or crystals in the medium, the movement gap between the valve core and the valve seat gradually decreases, resulting in sluggish valve action or even complete jamming, seriously affecting the precise control of process parameters. The accumulation of deposits on the sealing surface will damage the integrity of the metal hard seal or soft seal material, causing an increase in the internal leakage of the valve, not only resulting in energy waste, but also possibly causing safety hazards such as overpressure of downstream equipment. When a coking layer forms in the throttling area of high-viscosity medium, it will change the original flow characteristic curve, causing the valve adjustment performance to deviate from the design parameters and resulting in system oscillation. Summary of the Invention

[0004] To achieve the above object, the present invention is realized through the following technical solutions: A petrochemical control valve includes a housing. Symmetrically arranged holes are provided on the outer side surface of the housing. A liquid inlet is fixedly connected to the outer side surface of the housing. A liquid outlet is fixedly connected to the side of the housing away from the liquid inlet. A filtering mechanism is threadedly connected to the inner cavity of the liquid inlet. This filtering mechanism is used to filter and discharge large impurities in the transferred liquid in petrochemical industry; A valve mechanism is arranged in the inner cavity of the housing. This valve mechanism is used to control the flow of the transferred liquid in petrochemical industry in the inner cavity of the housing. The valve mechanism includes a rotating cylinder. The rotating cylinder is rotatably connected to the inner cavity of the housing. Communication ports are symmetrically arranged on the outer side surface of the rotating cylinder. The communication ports symmetrically arranged on the outer side surface of the rotating cylinder are aligned with the holes symmetrically arranged on the outer side surface of the housing. By providing the housing and symmetrically arranging holes on its outer side surface, the liquid inlet and the liquid outlet can be fixedly connected respectively, so that the liquid can enter the inner cavity of the housing through the liquid inlet and be discharged from the housing through the liquid outlet, thus realizing the circulation of the liquid. By providing the filtering mechanism, solid particles, polymers, coke residues and other impurities in the medium can be effectively intercepted, reducing the risk of wear and blockage of key moving parts in the valve from the source. When a fluid containing catalyst powder or coke powder flows through the valve, it is intercepted by the built-in multi-stage filtering component screen, and impurities with a particle size larger than the designed threshold are blocked in the outer flow channel of the valve cavity, preventing them from entering the spool-seat sealing area and causing scratches or jams. By providing the valve mechanism, the rapid opening and closing or flow rate adjustment of the flow channel can be realized by rotating the sphere by 90° around the axis. When the through-hole of the sphere is aligned with the axis of the pipeline, it reaches the fully open state, and after rotating 90°, the medium flow is completely blocked. This design enables the spherical valve to have an extremely short opening and closing time, which is especially suitable for working conditions that require emergency cut-off, such as emergency treatment of long-distance pipeline leakage or overpressure protection of reactors. Compared with traditional types such as gate valves and globe valves, the full-bore flow channel design of the spherical valve can significantly reduce the fluid resistance and effectively reduce the risk of sedimentation and blockage when transporting high-viscosity media or slurries containing solid particles.

[0005] Preferably, the filtering mechanism includes a threaded ring. The threaded ring is threadedly connected to the inner cavity of the liquid inlet. A treatment box is fixedly connected to the side of the threaded ring away from the liquid inlet. A connecting pipe is fixedly connected to the side of the treatment box away from the liquid inlet. By providing the threaded ring, it can be threadedly connected to the liquid inlet, so that the treatment box is connected to the threaded ring, and when the control valve is overhauled later, it is convenient to separate the treatment box from the housing. By providing the connecting pipe, it can be connected to the oil discharge end.

[0006] Preferably, a fixing ring is fixedly connected to the inner wall of the processing box. A partition rod is fixedly connected to the inner surface of the fixing ring. The number of the partition rods is several, and several of the partition rods are evenly distributed. One end of the partition rod away from the fixing ring is fixedly connected to a diversion column. The diversion column is located at the axis of the inner cavity of the processing box. By providing the fixing ring, the partition rods can be connected, so that several partition rods can be connected to the inner ring of the fixing ring. By providing several partition rods, solid particles in the liquid can be blocked, so that the liquid can flow through the gaps between several partition rods, while the particulate matter will not flow. By providing the diversion column, the liquid can be diverted so that the liquid can flow to the outer surface of the partition rod.

[0007] Preferably, a slag discharging mechanism penetrates through the lower surface of the processing box. The slag discharging mechanism includes a limiting box. A slag discharging pipe penetrates through the outer side surface of the limiting box. The slag discharging pipe is located in the middle of the outer side surface of the limiting box. By providing the slag discharging mechanism, the slag and fixed particles blocked by the partition rods can be collected and discharged from the inner cavity of the processing box. By providing the slag discharging pipe, the slag can be discharged.

[0008] Preferably, a threaded ring is fixedly connected to the inner wall of the limiting box. A threaded column is threadedly connected to the inner cavity of the threaded ring. The top end of the threaded column is fixedly connected to a piston plate. The piston plate is frictionally adapted to the inner wall of the limiting box. Elastic strips are fixedly connected to the corners of the upper surface of the piston plate. The top ends of the elastic strips are fixedly connected to a scraper. The scraper is frictionally adapted to the inner wall of the processing box. By providing the threaded ring, the threaded column can be limited, so that when the threaded column rotates, it can produce a vertically up-and-down movement effect in the inner cavity of the threaded ring. By providing the piston plate, when the threaded column moves up and down, the piston plate can move up in the inner cavity of the limiting box. Thus, when the piston plate drops below the slag discharging pipe, the slag can be discharged. By providing the scraper, when the piston plate moves up and down, the scraper can scrape the slag in the inner cavity of the processing box.

[0009] Preferably, a limiting groove is formed in the bottom surface of the inner cavity of the housing. The rotating cylinder is frictionally adapted to the limiting groove. A limiting hole is formed in the upper surface of the housing. The valve mechanism further includes a limiting housing. The limiting housing is fixedly connected to the housing by bolts. By providing the rotating cylinder, it can rotate stably in the inner cavity of the housing. By providing the limiting groove, the stability of the rotation of the rotating cylinder can be increased.

[0010] Preferably, a rotating rod is rotatably connected to the inner cavity of the limiting shell. The bottom end of the rotating rod penetrates through the limiting hole opened on the upper surface of the shell. The bottom end of the rotating rod is fixedly connected to the upper surface of the rotating cylinder. The top end of the rotating rod is fixedly connected with a valve handle. By providing the limiting shell, the rotating rod can be limited, so that when the rotating rod rotates, it can stably rotate in the inner cavity of the limiting shell. By providing the valve handle, it is convenient for the operator to rotate the rotating rod and the rotating cylinder.

[0011] Preferably, support rods are fixedly connected to the bottom surface and the top surface of the inner cavity of the rotating cylinder. The number of the support rods is several, and several of the support rods are evenly distributed. The end of the support rod is fixedly connected with a limiting ring. The outer surface of the limiting ring is rotatably connected with a rotating ring. By providing the limiting ring, the rotating ring can be limited, so that the rotating ring can rotate on the outer surface of the limiting ring. By providing the support rods, the limiting ring can be supported.

[0012] Preferably, a stirring plate is fixedly connected to the side of the rotating ring away from the limiting ring. The number of the stirring plates is several, and several of the stirring plates are evenly distributed. A scraping strip is fixedly connected to the outer surface of the stirring plate. The scraping strip is frictionally adapted to the inner wall of the rotating cylinder. By providing the stirring plate, when the liquid enters the inner cavity of the rotating cylinder, the thrust generated by the liquid flow can be used to make the stirring plate receive the thrust, so that the rotating ring rotates on the outer surface of the limiting ring, and finally drives the scraping strip to scrape off the viscous liquid attached to the inner wall of the rotating cylinder, thereby preventing the viscous liquid from accumulating on the inner wall of the rotating cylinder for a long time, and further preventing the inner cavity space of the rotating cylinder from being affected by dirt accumulation and affecting the liquid flow rate.

[0013] The present invention provides a petrochemical control valve. It has the following beneficial effects:

[0014] First, for this petrochemical control valve, by providing a shell and symmetrically opening holes on its outer side surface, the liquid inlet and the liquid outlet can be fixedly connected respectively, so that the liquid can enter the inner cavity of the shell through the liquid inlet and be discharged from the shell through the liquid outlet, thereby realizing the liquid circulation work.

[0015] Second, for this petrochemical control valve, by providing a filtering mechanism, solid particles, polymers, coke residues and other impurities in the medium can be effectively intercepted, reducing the risk of wear and blockage of key moving parts inside the valve from the source. When a fluid containing catalyst powder or coke powder flows through the valve, it is intercepted by the built-in multi-stage filtering component screen, and impurities with a particle size larger than the designed threshold are blocked in the outer flow channel of the valve cavity, preventing them from entering the spool-seat sealing area and causing scratches or jams.

[0016] III. For this petrochemical control valve, by setting up a valve mechanism, the rapid opening and closing of the flow channel or the flow rate adjustment can be achieved by rotating the sphere 90° around the axis. When the through-hole of the sphere is aligned with the pipeline axis, it reaches the fully open state, and after rotating 90°, the medium flow is completely blocked. This design enables the spherical valve to have an extremely short opening and closing time, and is particularly suitable for working conditions that require emergency cut-off, such as the emergency treatment of long-distance pipeline leakage or the overpressure protection of reactors. Compared with traditional types such as gate valves and globe valves, the full-bore flow channel design of the spherical valve can significantly reduce the fluid resistance, and effectively reduce the risk of deposition and blockage when transporting high-viscosity media or slurries containing solid particles.

[0017] IV. For this petrochemical control valve, by setting up a slag discharging mechanism, the slag materials and fixed particles blocked by the partition rod can be collected and discharged from the inner cavity of the treatment tank. By setting up a slag discharge pipe, the slag materials can be discharged.

[0018] V. For this petrochemical control valve, by setting up a stirring plate, when the liquid enters the inner cavity of the rotating cylinder, the thrust generated by the liquid flow can make the stirring plate receive the thrust, and then make the rotating ring rotate on the outer surface of the limiting ring, and finally drive the scraping strip to scrape off the viscous liquid attached to the inner wall of the rotating cylinder, thereby preventing the viscous liquid from adhering to the inner wall of the rotating cylinder for a long time and causing accumulation, and further preventing the inner cavity space of the rotating cylinder from being affected by dirt accumulation and affecting the liquid flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the external structure schematic diagram of a petrochemical control valve of the present invention;

[0020] Figure 2 is the side view of the structure of a petrochemical control valve of the present invention;

[0021] Figure 3 is the disassembled structure schematic diagram of a petrochemical control valve of the present invention;

[0022] Figure 4 is the sectional structure schematic diagram of a petrochemical control valve of the present invention;

[0023] Figure 5 is the structure schematic diagram of the filtering mechanism of the present invention;

[0024] Figure 6 is the sectional structure schematic diagram of the filtering mechanism of the present invention;

[0025] Figure 7 is the structure schematic diagram of the slag discharging mechanism of the present invention;

[0026] Figure 8 is the structure schematic diagram of the valve mechanism of the present invention;

[0027] Figure 9This is a schematic cross-sectional structure diagram of the valve mechanism of the present invention.

[0028] In the figure: 1. Housing; 2. Liquid inlet; 3. Liquid outlet; 4. Limit groove; 5. Limit hole; 6. Filter mechanism; 7. Valve mechanism; 61. Threaded ring; 62. Treatment box; 63. Connecting pipe; 64. Fixed ring; 65. Partition rod; 66. Flow guide column; 67. Slag discharge mechanism; 671. Limit box; 672. Slag discharge pipe; 673. Piston plate; 674. Elastic strip; 675. Scraper; 676. Threaded ring; 677. Threaded column; 71. Limit housing; 72. Rotating rod; 73. Valve handle; 74. Rotating cylinder; 75. Support rod; 76. Limit ring; 77. Rotating ring; 78. Stirring plate; 79. Scraping strip. Detailed implementation manners

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0030] As Figures 1-9As shown in the figure, the present invention provides a technical solution: a petrochemical control valve, including a housing 1, symmetrically provided with holes on the outer side surface of the housing 1, the outer side surface of the housing 1 is fixedly connected with a liquid inlet 2, and the side of the housing 1 away from the liquid inlet 2 is fixedly connected with a liquid outlet 3. A filtering mechanism 6 is threadedly connected to the inner cavity of the liquid inlet 2, and the filtering mechanism 6 is used for filtering and discharging large impurities in the petrochemical transfer liquid; a valve mechanism 7 is arranged in the inner cavity of the housing 1, and the valve mechanism 7 is used for controlling the flow of the petrochemical transfer liquid in the inner cavity of the housing 1. The valve mechanism 7 includes a rotating cylinder 74, and the rotating cylinder 74 is rotatably connected to the inner cavity of the housing 1. Symmetrically provided with communication ports on the outer side surface of the rotating cylinder 74, and the symmetrically provided communication ports on the outer side surface of the rotating cylinder 74 are aligned with the symmetrically provided holes on the outer side surface of the housing 1. By providing the housing 1 and symmetrically providing holes on its outer side surface, the liquid inlet 2 and the liquid outlet 3 can be fixedly connected respectively, so that the liquid can enter the inner cavity of the housing 1 through the liquid inlet 2 and be discharged from the housing 1 through the liquid outlet 3, thereby realizing the liquid circulation work. By providing the filtering mechanism 6, solid particles, polymers, coke residues and other impurities in the medium can be effectively intercepted, reducing the risk of wear and blockage of key moving parts in the valve from the source. When a fluid containing catalyst powder or coke powder flows through the valve, it is intercepted by the built-in multi-stage filtering component screen, and impurities with a particle size larger than the designed threshold are blocked in the outer peripheral flow channel of the valve cavity, preventing them from entering the spool-seat sealing area and causing scratches or jams. By providing the valve mechanism 7, the rapid opening and closing or flow rate adjustment of the flow channel can be realized by rotating the sphere 90° around the axis. When the sphere through-hole is aligned with the pipeline axis, it reaches the fully open state, and after rotating 90°, the medium flow is completely blocked. This design enables the spherical valve to have an extremely short opening and closing time, usually less than 1 second, and is especially suitable for working conditions that require emergency cut-off, such as emergency treatment of long-distance pipeline leaks or overpressure protection of reactors. Compared with traditional types such as gate valves and globe valves, the full-bore flow channel design of the spherical valve can significantly reduce the fluid resistance and effectively reduce the risk of deposition and blockage when transporting high-viscosity media or slurries containing solid particles.

[0031] The filtering mechanism 6 includes a threaded ring 61 which is threadedly connected to the inner cavity of the liquid inlet 2. On the side of the threaded ring 61 away from the liquid inlet 2, a treatment box 62 is fixedly connected. On the side of the treatment box 62 away from the liquid inlet 2, a connecting pipe 63 is fixedly connected. By providing the threaded ring 61, it can be threadedly connected to the liquid inlet 2, thereby connecting the treatment box 62 to the threaded ring 61. And when overhauling the control valve subsequently, it is convenient to separate the treatment box 62 from the housing 1. By providing the connecting pipe 63, it can be connected to the petroleum discharge end. A fixing ring 64 is fixedly connected to the inner wall of the treatment box 62. A partition rod 65 is fixedly connected to the inner surface of the fixing ring 64. The number of partition rods 65 is several, and several partition rods 65 are evenly distributed. One end of the partition rod 65 away from the fixing ring 64 is fixedly connected to a guide column 66. The guide column 66 is located at the axis of the inner cavity of the treatment box 62. By providing the fixing ring 64, the partition rods 65 can be connected, enabling several partition rods 65 to be connected to the inner ring of the fixing ring 64. By providing several partition rods 65, solid particles in the liquid can be blocked, so that the liquid can flow through the gaps between several partition rods 65, while the particulate matter will not flow through. By providing the guide column 66, the liquid can be guided so that the liquid can flow to the outer surface of the partition rod 65. A slag discharge mechanism 67 penetrates through the lower surface of the treatment box 62. The slag discharge mechanism 67 includes a limit box 671. A slag discharge pipe 672 penetrates through the outer side surface of the limit box 671. The slag discharge pipe 672 is located in the middle of the outer side surface of the limit box 671. By providing the slag discharge mechanism 67, the slag and fixed particles blocked by the partition rods 65 can be collected and discharged from the inner cavity of the treatment box 62. By providing the slag discharge pipe 672, the slag can be discharged.

[0032] A threaded ring 676 is fixedly connected to the inner wall of the limit box 671. A threaded column 677 is threadedly connected to the inner cavity of the threaded ring 676. The top end of the threaded column 677 is fixedly connected to a piston plate 673. The piston plate 673 is frictionally fitted with the inner wall of the limit box 671. Elastic strips 674 are fixedly connected to the corners of the upper surface of the piston plate 673. The top ends of the elastic strips 674 are fixedly connected to a scraper 675. The scraper 675 is frictionally fitted with the inner wall of the treatment box 62. By providing the threaded ring 676, the threaded column 677 can be limited, so that when the threaded column 677 rotates, it can produce a vertically up and down movement effect in the inner cavity of the threaded ring 676. By providing the piston plate 673, when the threaded column 677 moves up and down, the piston plate 673 can move up in the inner cavity of the limit box 671. Thus, when the piston plate 673 drops below the slag discharge pipe 672, the slag can be discharged. By providing the scraper 675, when the piston plate 673 moves up and down, the scraper 675 can scrape the slag in the inner cavity of the treatment box 62.

[0033] A limiting groove 4 is formed on the bottom surface of the inner cavity of the housing 1. The rotating cylinder 74 is frictionally adapted to the limiting groove 4. A limiting hole 5 is formed on the upper surface of the housing 1. The valve mechanism 7 further includes a limiting housing 71. The limiting housing 71 is fixedly connected to the housing 1 by bolts. By providing the rotating cylinder 74, it can rotate stably in the inner cavity of the housing 1. By providing the limiting groove 4, the stability of the rotation of the rotating cylinder 74 can be increased. A rotating rod 72 is rotatably connected to the inner cavity of the limiting housing 71. The bottom end of the rotating rod 72 penetrates through the limiting hole 5 formed on the upper surface of the housing 1. The bottom end of the rotating rod 72 is fixedly connected to the upper surface of the rotating cylinder 74. The top end of the rotating rod 72 is fixedly connected with a valve handle 73. By providing the limiting housing 71, the rotating rod 72 can be limited, so that when the rotating rod 72 rotates, it rotates stably in the inner cavity of the limiting housing 71. By providing the valve handle 73, it is convenient for the operator to rotate the rotating rod 72 and the rotating cylinder 74. The bottom surface and the top surface of the inner cavity of the rotating cylinder 74 are fixedly connected with support rods 75. The number of the support rods 75 is several, and several support rods 75 are evenly distributed. The end of the support rod 75 is fixedly connected with a limiting ring 76. The outer surface of the limiting ring 76 is rotatably connected with a rotating ring 77. By providing the limiting ring 76, the rotating ring 77 can be limited, so that the rotating ring 77 can rotate on the outer surface of the limiting ring 76. By providing the support rods 75, the limiting ring 76 can be supported. One side of the rotating ring 77 away from the limiting ring 76 is fixedly connected with stirring plates 78. The number of the stirring plates 78 is several, and several stirring plates 78 are evenly distributed. The outer surface of the stirring plate 78 is fixedly connected with scraping strips 79. The scraping strips 79 are frictionally adapted to the inner wall of the rotating cylinder 74. By providing the stirring plates 78, when the liquid enters the inner cavity of the rotating cylinder 74, the thrust generated by the liquid flow is utilized to make the stirring plates 78 receive the thrust, so that the rotating ring 77 rotates on the outer surface of the limiting ring 76, and finally drives the scraping strips 79 to scrape off the viscous liquid adhering to the inner wall of the rotating cylinder 74, thereby preventing the viscous liquid from accumulating on the inner wall of the rotating cylinder 74 for a long time, and further preventing the inner cavity space of the rotating cylinder 74 from being affected by dirt accumulation and affecting the liquid flow rate.

[0034] Working principle: When in use, the operator connects the connecting pipe 63 to the water outlet end of the pipeline, making the water flow direction towards the treatment tank 62, and connects the liquid discharge port 3 to the pipeline at the drainage end. When liquid circulation is required, the operator rotates the valve handle 73 to align the holes on the outer side of the rotating cylinder 74 with the holes on the outer side of the housing 1, so that the liquid can circulate. During the liquid circulation process, impurities and solid particles in the liquid will be blocked by several partition rods 65. The filtered liquid flows into the inner cavity of the rotating cylinder 74, which causes the stirring plate 78 to be pushed, making the rotating ring 77 rotate on the outer surface of the limit ring 76. Eventually, the scraping strip 79 contacts the inner wall of the rotating cylinder 74, preventing dirt accumulation from affecting the liquid circulation rate. Then, the valve handle 73 is rotated to stop the liquid circulation. After that, the operator rotates the threaded column 677, causing the piston plate 673 to drive the elastic strip 674 and the scraping plate 675 to move downward, making the dirt and impurities in the inner cavity of the treatment tank 62 move downward and finally discharge from the slag discharge pipe 672.

[0035] Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the scope of protection of the present invention. Structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A petrochemical control valve, comprising a housing (1), wherein holes are symmetrically provided on the outer side of the housing (1), a liquid inlet (2) is fixedly connected to the outer side of the housing (1), and a liquid discharge port (3) is fixedly connected to the side of the housing (1) away from the liquid inlet (2), wherein: A filter mechanism (6) is threadedly connected to the inner cavity of the liquid inlet (2), and the filter mechanism (6) is used to filter and discharge large impurities in the petrochemical transfer liquid; a valve mechanism (7) is provided in the inner cavity of the shell (1), and the valve mechanism (7) is used to control the circulation of the petrochemical transfer liquid in the inner cavity of the shell (1), and the valve mechanism (7) comprises a rotating cylinder (74), and the rotating cylinder (74) is rotatably connected to the inner cavity of the shell (1), and the outer side surface of the rotating cylinder (74) is symmetrically provided with communication ports, and the symmetrically provided communication ports on the outer side surface of the rotating cylinder (74) are aligned with the symmetrically provided holes on the outer side surface of the shell (1).

2. A petrochemical control valve according to claim 1, characterized in that: The filtering mechanism (6) comprises a threaded ring (61), the threaded ring (61) being threadedly connected to the inner cavity of the liquid inlet (2), a side of the threaded ring (61) away from the liquid inlet (2) being fixedly connected to a treatment box (62), and a side of the treatment box (62) away from the liquid inlet (2) being fixedly connected to a connecting pipe (63).

3. A petrochemical control valve according to claim 2, characterized in that: A fixing ring (64) is fixedly connected to the inner wall of the processing box (62), and a partition rod (65) is fixedly connected to the inner surface of the fixing ring (64). There are a plurality of partition rods (65), and the plurality of partition rods (65) are evenly distributed. One end of the partition rod (65) away from the fixing ring (64) is fixedly connected to a guide column (66), and the guide column (66) is located at the axial center of the inner cavity of the processing box (62).

4. A petrochemical control valve according to claim 3, characterized in that: A slag discharge mechanism (67) is passed through the lower surface of the processing box (62), and the slag discharge mechanism (67) comprises a limit box (671). A slag discharge pipe (672) is passed through the outer side of the limit box (671), and the slag discharge pipe (672) is located in the middle of the outer side of the limit box (671).

5. A petrochemical control valve according to claim 4, characterized in that: A threaded ring (676) is fixedly connected to the inner wall of the limit box (671), a threaded column (677) is threadedly connected to the inner cavity of the threaded ring (676), a piston plate (673) is fixedly connected to the top of the threaded column (677), the piston plate (673) is frictionally fitted with the inner wall of the limit box (671), an elastic strip (674) is fixedly connected to the corner of the upper surface of the piston plate (673), a scraper (675) is fixedly connected to the top of the elastic strip (674), and the scraper (675) is frictionally fitted with the inner wall of the processing box (62).

6. A petrochemical control valve according to claim 1, characterized in that: A limiting groove (4) is provided on the bottom surface of the inner cavity of the shell (1), the rotating cylinder (74) is frictionally matched with the limiting groove (4), a limiting hole (5) is provided on the upper surface of the shell (1), and the valve mechanism (7) further comprises a limiting shell (71), and the limiting shell (71) is fixedly connected to the shell (1) by bolts.

7. A petrochemical control valve according to claim 6, characterized in that: A rotating rod (72) is rotatably connected to the inner cavity of the limiting shell (71); the bottom end of the rotating rod (72) passes through a limiting hole (5) provided on the upper surface of the shell (1); the bottom end of the rotating rod (72) is fixedly connected to the upper surface of the rotating cylinder (74); and the top end of the rotating rod (72) is fixedly connected to a valve handle (73).

8. A petrochemical control valve according to claim 7, characterized in that: The bottom surface and the top surface of the inner cavity of the rotating cylinder (74) are fixedly connected with support rods (75), the number of the support rods (75) is several, and the several support rods (75) are evenly distributed, the ends of the support rods (75) are fixedly connected with limit rings (76), and the outer surface of the limit ring (76) is rotatably connected with a rotating ring (77).

9. A petrochemical control valve according to claim 8, characterized in that: A stirring plate (78) is fixedly connected to one side of the rotating ring (77) away from the limiting ring (76); the number of the stirring plates (78) is multiple and the multiple stirring plates (78) are evenly distributed; a scraper (79) is fixedly connected to the outer surface of the stirring plate (78); the scraper (79) is frictionally fitted with the inner wall of the rotating cylinder (74).

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