Special V-shaped ball valve for filtering catalyst

Abstract

A V-shaped ball valve special for filtering a catalyst belongs to the technical field of valves and comprises a valve body, a valve cover, a valve seat, a valve core, a bottom cover, an upper valve cover, a valve rod, an upper shaft sleeve, a lower shaft sleeve, a filler group, a sealing pressing sleeve, a sealing pressing plate, a positioning plate, a handle, an upper valve cover spiral wound gasket, a middle flange spiral wound gasket and a bottom cover spiral wound gasket. The valve cover, the valve seat, the valve element, the bottom cover, the upper valve cover, the valve rod, the upper shaft sleeve, the lower shaft sleeve, the packing set, the sealing pressing sleeve, the sealing pressing plate, the positioning plate, the handle, the upper valve cover spiral wound gasket, the middle flange spiral wound gasket, the bottom cover spiral wound gasket and the valve body are installed together. The inner surface of the valve element is of an arc transition structure, flow adjustment is more stable, turbulent flow generated in the medium conveying process can be reduced, pressure loss is reduced, flow control is more accurate, gas-solid media can be selectively separated, gas can rapidly pass through the valve element, catalyst particles with large outer diameters are intercepted, impurities in the valve seat can be conveniently cleaned, and the service life is prolonged. In conclusion, the device has a good application prospect.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a V-type ball valve specifically for filtering catalysts. Background Technology

[0002] Powdered catalysts are widely used in many industrial sectors such as petrochemicals and oil refining. The transport and control of catalysts play a crucial role in the stability, efficiency, and product quality of the production process. In processes involving catalysts, a valve that can precisely control the flow rate and effectively handle complex media is required (generally a ball valve, which uses compressed gas to drive the catalyst to flow through the pipeline).

[0003] Traditional ball valves, due to their structural limitations, still have several technical shortcomings that urgently need improvement when handling media with high hardness and strong abrasiveness, such as catalysts. Firstly, the valve core (ball) of traditional ball valves typically uses a conventional circular design with a transverse through-hole as the flow channel. When the valve core is partially open, the flow channel area changes non-linearly (especially at small openings), easily generating turbulence and causing large flow fluctuations. This reduces the sensitivity of flow regulation and hinders precise flow control. Secondly, in complex conditions involving gas-solid two-phase media, existing ball valves lack an adjustable clearance between the valve seat and the ball, and lack effective media filtration. Larger catalyst particles can easily enter downstream equipment with the airflow, causing equipment wear and fluctuations in process parameters. Thirdly, existing ball valves lack the function of cleaning impurities accumulated in the valve seat. Over time, these impurities accumulate at the bottom of the valve seat, affecting the control of the input and output flow rates. Therefore, developing a new type of ball valve that can stably regulate flow rate, and whose gap between the valve seat and the ball can filter and screen particles of solid-gas media with a specific outer diameter, and can easily clean impurities inside the valve seat, is of great practical significance and can greatly promote efficient and stable production in related industrial fields. Utility Model Content

[0004] To overcome the shortcomings of existing ball valves due to structural limitations, as described in the background, this utility model provides a V-shaped ball valve primarily used for gas-driven powdered media transportation. It employs a semi-circular V-shaped valve core as the mechanism for controlling media flow. The inner surface of the valve core has a circular arc transition structure, and the rotation angle is linearly related to the change in flow channel area, resulting in smoother flow regulation. The V-shaped edge creates a shearing effect on the fluid, reducing turbulence during media transportation, lowering pressure loss, and providing more precise flow control. Furthermore, the adjustable gap between the valve core and valve seat enables selective separation of gas and solid media, allowing gas to pass quickly while trapping larger outer diameter catalyst particles. This maintains system pressure balance within the pipeline while reducing erosion and wear on the sealing surface between the valve seat and valve core caused by solid media. It also facilitates the cleaning of impurities inside the valve seat, thereby extending the service life of this catalyst transportation-specific V-shaped ball valve for catalyst filtration.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This is a V-type ball valve specifically designed for filtering catalysts. It includes a valve body, valve cover, valve seat, valve core, bottom cover, upper valve cover, valve stem, upper bushing, lower bushing, packing assembly, sealing sleeve, sealing plate, positioning plate, handle, upper valve cover spiral wound gasket, middle flange spiral wound gasket, and bottom cover spiral wound gasket. The valve cover and valve body are respectively the inlet and outlet channels. One side of the valve cover has an internal threaded mounting groove, and one end of the valve seat has an external thread. One end of the valve seat and the mounting groove of the valve cover are threaded together. The middle flange spiral wound gasket is located between the other end of the valve seat and one side of the valve body. One side of the valve cover and one side of the valve body are fixedly installed together. The upper and lower ends of the valve body each have a fixing groove. The cover is installed on the lower side of the fixing groove at the lower end of the valve body, the lower bushing is fixedly installed on the bottom cover, and the bottom cover is wound with a gasket between the lower end of the valve body and the bottom cover; the outer side of the upper bushing is fixedly installed in the fixing groove at the upper end of the valve body, the lower end of the upper valve cover is fixedly installed outside the upper end of the valve body, and the upper valve cover is wound with a gasket between the upper valve cover and the upper end of the valve body. The upper valve cover has a guide groove, the lower end of the valve stem has an irregular structure, and the valve stem rotates within the guide groove of the upper valve cover. The valve core has a V-shaped structure, the lower end of the valve core rotates and is installed outside the lower bushing, and the lower end of the valve stem is fixedly installed on the upper end of the valve core; the packing assembly, sealing sleeve, sealing plate, positioning plate, and handle are respectively installed together with the valve stem and the upper valve cover.

[0007] Furthermore, there is a gap between the valve core and the valve seat, and the inner surface of the valve core has a rounded transition structure.

[0008] Furthermore, the upper valve cover spiral wound gasket, the middle flange spiral wound gasket, and the bottom cover spiral wound gasket are stainless steel graphite gaskets.

[0009] Furthermore, the inner diameter of the upper end of the guide groove of the upper valve cover is larger than the inner diameter of the lower end. The packing assembly is located inside the upper end of the guide groove. The sealing pressure plate and the hollow sealing pressure sleeve are respectively movably sleeved on the outer side of the upper end of the valve stem, and the lower end of the sealing pressure sleeve and the upper end of the packing assembly are in sealing contact. The sealing pressure plate is fixedly installed on the upper end of the upper valve cover. One end of the handle is fixedly installed on the top of the valve stem. One side of the positioning plate is fixedly installed on one outer end of the sealing pressure plate. A limit rod is fixedly installed on the upper side of the valve stem.

[0010] Furthermore, the inner side of the packing assembly and the outer side of the valve stem have a sealed rotating contact structure, and there is a gap between the inner side of the upper valve cover and the outer side of the valve stem. The packing assembly is a ring-shaped structure made of graphite.

[0011] Furthermore, the surfaces of the valve core and valve seat are coated with hard alloy.

[0012] Compared with the prior art, the advantages of this utility model are: (1) This utility model uses a semi-circular V-shaped valve core as the mechanism for controlling the flow of the medium. The inner surface of the valve core is a circular arc transition structure. During the opening or closing of the valve core, the rotation angle and the change of the flow channel area are linearly related, and the flow regulation of the medium (such as additives of chemical reaction materials) is more stable. The V-shaped edge forms a shearing effect on the fluid, which can reduce the turbulence generated in the medium transportation, reduce pressure loss, and make the flow control more accurate; (2) The valve seat and valve cover are connected by threads. The valve seat can be flexibly adjusted to adjust the gap between the valve and the ball. In this way, selective separation of gas and solid media can be achieved, allowing gas and smaller particles to pass through quickly while retaining larger outer diameter catalyst particles, etc. While maintaining the pressure balance of the system in the pipeline, the scouring and wear of the sealing surface between the valve seat and the outer side of the valve core by the solid medium can be reduced. It can also facilitate the cleaning of impurities in the valve seat, thereby improving the service life of the overall equipment. In summary, this utility model has good application prospects. Attached Figure Description

[0013] Figure 1 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0014] Figure 2 , 3 This is a partial structural schematic diagram of the present invention. Detailed Implementation

[0015] Figure 1 , 2As shown in Figure 3, the V-type ball valve for filter catalyst includes a valve body (1), valve cover (2), valve seat (3), valve core (4), bottom cover (5), upper valve cover (6), valve stem (7), upper bushing (8), lower bushing (9), packing assembly (10), sealing sleeve (11), sealing plate (12), positioning plate (13), handle (14), upper valve cover spiral wound gasket (15), middle flange spiral wound gasket (16), and bottom cover spiral wound gasket (17). The valve cover (2) and valve body (1) each have a transverse through-channel serving as an inlet and outlet channel, respectively. The valve cover (2) has a [missing information - likely a design element or component]. The valve seat (3) has an internal thread mounting groove, a fluid channel is distributed laterally in the middle of the valve seat (3), and the right end of the valve seat (3) is a left concave arc-shaped structure (31). The left end of the valve seat (3) has an external thread. The left end of the valve seat (3) and the mounting groove of the valve cover (2) are fixed together by thread sealing. The middle flange spiral wound gasket (16) is located between the right outer end of the valve seat (3) and the left outer end of the valve body. The right outer end of the valve cover (2) and the left outer end of the valve body (1) are fixed together by bolt 19. The upper end and the lower end of the valve body (1) have a fixed groove that is concave and convex and communicates with its interior, respectively. The bottom cover ( 5) The lower bushing (9) is fixedly installed in the lower part of the valve body's fixing groove by bolts. The lower end of the lower bushing (9) is fixedly installed in the upper part of the bottom cover (5). The bottom cover is sealed with a gasket (17) between the lower outer end of the valve body (1) and the outer side of the middle part of the bottom cover (5). The outer side of the upper bushing (8) is sealed in the fixing groove at the upper end of the valve body (1). The lower end of the upper valve cover (6) is installed in the upper part of the valve body (1) by bolts. The upper valve cover is sealed with a gasket (15) between the lower outer end of the upper valve cover (6) and the upper end of the valve body (1). There is a guide groove that runs vertically through the middle of the upper valve cover (6). The lower end of the valve stem (7) is a rectangular structure. (7) The valve stem (7) is located in the guide groove of the upper valve cover (6) and the lower rectangular position of the valve stem (7) is located outside the lower end of the upper bushing (8). The valve core (4) is a V-shaped structure (41). The upper end and the middle part of the lower end of the valve core (4) have a rectangular fixing hole (42) and a circular guide hole (43) respectively. The guide hole (43) is located outside the lower bushing (9) and the lower end of the valve stem (7) is fixedly installed in the valve core fixing hole. The packing group (10), sealing sleeve (11), sealing plate (12), positioning plate (13), and handle (14) are respectively installed on the upper end of the valve stem (7) and the upper valve cover (6).

[0016] Figure 1 , 2As shown in Figure 3, there is a gap (18) between the left side of the valve core (4) and the right inner side of the valve seat, and the right inner surface of the valve core is a rounded transition structure (44). The upper valve cover spiral wound gasket (15), the middle flange spiral wound gasket (16), and the bottom cover spiral wound gasket (17) are stainless steel graphite gaskets made of graphite and stainless steel braid. The inner diameter of the upper end of the guide groove of the upper valve cover (6) is larger than the inner diameter of the lower end. The packing assembly (10) is located inside the upper end of the guide groove. The hollow sealing pressure plate (12) and the hollow sealing pressure sleeve (11) are respectively movably sleeved on the outer side of the upper end of the valve stem (7) from top to bottom. The lower end of the sealing pressure sleeve (11) and the upper end of the packing assembly (10) are in sealing contact. The two sides of the sealing pressure plate (12) are fixedly installed on the upper sides of the upper valve cover (6) by bolts. The left end of the handle (14) is fixedly installed on the top of the valve stem (7). The right side of the positioning plate (13) is fixedly installed on the left outer end of the sealing pressure plate (12). A limit rod (20) is fixedly installed on the upper right side of the valve stem (7). The inner side of the packing assembly (10) and the outer side of the valve stem (7) are in sealing rotation contact. There is a gap between the inner side of the upper valve cover (6) and the outer side of the valve stem (7). The packing assembly (10) is made of graphite (annular ring structure, which plays a role in sealing and lubrication). Its inner side and the outer side of the valve stem are in sealing rotation contact. Hard alloy is sprayed onto the surfaces of the valve core (4) and valve seat (3).

[0017] Figure 1 , 2As shown in Figure 3, the usage method of this new type of ball valve is completely the same as other ball valves. It is mainly used for conveying gas-driven powdered media. The feed channel and discharge channel are respectively connected to the raw material input pipeline and the production equipment feed pipeline. When the operator turns the handle (14) clockwise or counterclockwise, the valve core (4) rotates synchronously along the lower shaft. When the V-shaped surface of the valve core contacts the inner side of the valve seat 3, it plays a sealing and cutting-off role for the conveyed gas-solid media. When the valve core gradually opens, the raw material will be output into the production equipment based on the flow rate from small to large. This new type of ball valve has the following advantages compared with the existing ball valves. 1. This new type of valve uses a semi-circular V-shaped valve core (4) as the mechanism for controlling the flow of the medium. The inner surface of the valve core (4) is a circular arc transition structure (the contact area between the inner surface of the valve core and the valve seat (3) gradually changes, which can accurately and continuously adjust the flow of the medium, such as for the addition of chemical reaction materials). During the opening or closing of the valve core (4), the rotation angle and the change of the flow channel area are linearly related, and the flow of the medium (such as the additives of chemical reaction materials) is more stable. The V-shaped edge of the valve core (4) forms a shearing effect on the fluid, which can reduce the turbulence generated in the medium transportation, reduce pressure loss, and make the flow control more accurate. Second: Since the valve seat (3) and valve cover (2) are connected by threads, the valve seat (2) can be flexibly adjusted to adjust the gap between it and the left outer side of the valve core (4). In this way, the special design of the gap between the valve seat (2) and the valve core (4) can selectively separate gas and solid media, allowing gas to pass through quickly while trapping larger outer diameter catalyst particles, etc. While maintaining the pressure balance of the pipeline system, it reduces the scouring and wear of the sealing surface between the valve seat and the outer side of the valve core by the solid media, thus improving the overall service life of the valve. Third: Since spiral wound gaskets are equipped at relevant positions of the upper valve cover (6), bottom cover (5), and valve seat (3), and in conjunction with the packing group (10), sealing sleeve (11), etc., multiple seals are formed. Under harsh working conditions such as high pressure and high corrosion, it can effectively prevent media leakage, reduce the leakage rate, and improve the sealing performance. 4. The rotational fit between the upper bushing (8) and the valve stem (7), and between the lower shaft (9) and the lower end of the valve core (4), reduces the frictional force when the valve core (4) rotates, lowers the switching torque, and makes operation through the handle 14 easier and less strenuous. Even in large-diameter valves, it can effectively reduce the labor intensity of operators and improve work efficiency. 4. The synergistic effect of the positioning plate (13) and the limiting rod (20) can limit the opening range of the regulating valve core (4) when the valve stem (7) rotates to a certain angle, due to the limiting effect of the positioning plate (13), preventing the rotation angle from being too large. 5. The valve body (1) and valve cover (2) adopt a flow-expanding design, optimize the internal flow channel, reduce the overall flow resistance, and the gradually expanding oblique opening can avoid turbulence and negative pressure areas caused by sudden changes in the flow channel, reduce the impact of high-speed media on the valve body, and better adapt to high-pressure conditions.Six: The valve core (4) and valve seat (3) are coated with hard alloy and hardened, which enhances wear resistance and impact resistance, and extends service life. Under long-term contact with high flow rate and strong corrosive media, the wear and corrosion are significantly lower than those of ordinary ball valves, greatly reducing replacement frequency and maintenance costs. Seven: Since the bottom cover (5) is bolted, it is easy to disassemble and install the bottom cover (5). This makes it easier to replace or repair the valve core (4), and also makes it easier to clean impurities inside the valve seat, thereby improving the overall service life of the equipment.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0019] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A V-type ball valve for filter catalysts, comprising a valve body, valve cover, valve seat, valve core, bottom cover, upper valve cover, valve stem, upper bushing, lower bushing, packing assembly, sealing sleeve, sealing plate, positioning plate, handle, upper valve cover spiral wound gasket, middle flange spiral wound gasket, and bottom cover spiral wound gasket; characterized in that, The valve cover and valve body are respectively the feed channel and discharge channel. One side of the valve cover has an internal thread mounting groove, and one end of the valve seat has an external thread. One end of the valve seat and the mounting groove of the valve cover are threaded together. A spiral wound gasket for the middle flange is located between the other end of the valve seat and one side of the valve body. One side of the valve cover and one side of the valve body are fixedly installed together. The upper and lower ends of the valve body have fixing grooves. The bottom cover is installed below the fixing groove at the lower end of the valve body. The lower bushing is fixedly installed on the bottom cover. A spiral wound gasket for the bottom cover is located between the lower end of the valve body and the bottom cover. The upper bushing is fixedly installed on the outside of the upper end of the valve body in the fixing groove. The lower end of the upper valve cover is fixedly installed on the outside of the upper end of the valve body, and the upper valve cover is wound with a gasket between the upper valve cover and the upper end of the valve body. The upper valve cover has a guide groove. The lower end of the valve stem has an irregular structure. The valve stem rotates within the guide groove of the upper valve cover. The valve core has a V-shaped structure. The lower end of the valve core rotates and is installed on the outside of the lower bushing. The lower end of the valve stem is fixedly installed on the upper end of the valve core. The packing assembly, sealing sleeve, sealing plate, positioning plate, and handle are respectively installed together with the valve stem and the upper valve cover.

2. The V-type ball valve for filter catalysts according to claim 1, characterized in that, There is a gap between the valve core and the valve seat, and the inner surface of the valve core has a rounded transition structure.

3. The V-type ball valve for filter catalysts according to claim 1, characterized in that, The upper valve cover spiral wound gasket, the middle flange spiral wound gasket, and the bottom cover spiral wound gasket are stainless steel graphite gaskets.

4. The V-type ball valve for filter catalysts according to claim 1, characterized in that, The inner diameter of the upper end of the guide groove of the upper valve cover is larger than the inner diameter of the lower end. The packing assembly is located inside the upper end of the guide groove. The sealing pressure plate and the hollow sealing pressure sleeve are respectively movably sleeved on the outer side of the upper end of the valve stem, and the lower end of the sealing pressure sleeve and the upper end of the packing assembly are in sealing contact. The sealing pressure plate is fixedly installed on the upper end of the upper valve cover. One end of the handle is fixedly installed on the top of the valve stem. One side of the positioning plate is fixedly installed on one outer end of the sealing pressure plate. A limit rod is fixedly installed on the upper side of the valve stem.

5. The V-type ball valve for filter catalysts according to claim 1, characterized in that, The inner side of the packing assembly and the outer side of the valve stem have a sealing rotational contact structure. There is a gap between the inner side of the upper valve cover and the outer side of the valve stem. The packing assembly is a ring-shaped structure made of graphite.

6. The V-type ball valve for filter catalysts according to claim 1, characterized in that, Hard alloy is sprayed onto the surfaces of the valve core and valve seat.

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