Ceramic labyrinth angle valve

Abstract

The utility model discloses a ceramic labyrinth angle valve which comprises a valve body, a valve cover is arranged at the top of the valve body, a valve rod penetrates into the valve body from a center hole in the top end of the valve cover, a medium outlet is formed in the bottom of the valve body, a medium inlet perpendicular to the medium outlet is formed in the side face of the valve body, and a valve seat and a valve body lining are arranged in an inner cavity of the valve body. A conical surface hermetically matched with the bottom of the valve rod is arranged inside the top of the central hole of the valve seat; a space for installing the valve element assembly is defined between the valve body lining and the valve seat, and the valve element assembly comprises a plurality of sets of cylindrical valve element single bodies. And the plurality of groups of cylindrical valve core single bodies are connected in series up and down through the guide columns. The multi-stage zigzag flow channels are evenly distributed in the valve element assembly, when media flow in, kinetic energy can be consumed through potential energy in the vertical direction, and when the media flow out of the liquid outlet grooves in the upper ends of the valve element single bodies, hedging can be formed to offset the kinetic energy, so that abrasion to the valve element assembly is reduced, and the service life of the valve element assembly is prolonged. Long-term reliable use under the medium working conditions of large pressure difference, high flow speed and serious erosive wear is achieved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a ceramic labyrinth angle valve. Background Art

[0002] Currently, with the rapid development of industries such as petrochemical, coal chemical, silicon chemical, mining and metallurgy, and electric power environmental protection in the outdoors, many complex media will be encountered, and the pressure difference is large and the flow rate is fast, resulting in very strong erosion of the valve core, and the impact force on the valve core is large. The commonly used valve cores and the like are restricted by the materials and structures themselves, and have poor erosion and wear resistance. The throttle valves currently used in the industry generally have a short service life, and it is necessary to frequently stop production to replace new valves on site, which not only affects production efficiency but also increases costs. Therefore, there is an urgent need in the industry for a throttle valve that not only has wear resistance but also can reduce the impact force of the medium on the valve core. Content of the Utility Model

[0003] To solve the technical problems mentioned in the background art, the utility model provides a ceramic labyrinth angle valve.

[0004] The utility model adopts the following technical scheme: A ceramic labyrinth angle valve includes a valve body and a valve stem; a valve cover is arranged at the top of the valve body; the valve stem passes through the central hole at the top end of the valve cover and penetrates into the valve body; a medium outlet is arranged at the bottom of the valve body; a medium inlet perpendicular to the medium outlet is arranged on the side of the valve body; ceramic linings are closely attached to the inner walls of the medium outlet and the medium inlet; a valve seat and a valve body lining are arranged in the inner cavity of the valve body; the valve seat is arranged at the top end of the medium outlet; the central hole of the valve seat is communicated with the medium outlet to form a first flow channel for the medium to flow out; a conical surface for sealing cooperation with the bottom of the valve stem is arranged on the inner side of the top of the central hole of the valve seat; a space for installing a valve core assembly is formed by surrounding between the valve body lining and the valve seat; a second flow channel for the medium to flow in is formed by the communication between the side of the valve body lining and the medium inlet; the valve core assembly includes several groups of cylindrical valve core monomers; several groups of cylindrical valve core monomers are connected in series up and down through guide columns, and the upper and lower ends are respectively sealed and connected with the valve body lining and the valve seat through guide columns; a third flow channel for the medium to flow through is arranged axially along the center of the cylindrical valve core monomer; the inner diameter of the third flow channel is adapted to the outer diameter of the valve stem; several liquid inlet ports for the medium to flow in are evenly arranged on the outer circumferential surface of the cylindrical valve core monomer; several liquid outlet grooves for the medium to flow out are correspondingly arranged at the top of the cylindrical valve core monomer; the medium flowing in is converged into the third flow channel through several liquid outlet grooves; the liquid inlet ports and the liquid outlet grooves are connected through a zigzag flow channel; the medium flows into the third flow channel through the zigzag flow channel, and the flow rate of the medium is controlled by the up and down sliding of the valve stem in the third flow channel.

[0005] Further, the zigzag flow channel includes a fourth flow channel communicated with the liquid inlet port and arranged radially along the cylindrical valve core monomer, and a fifth flow channel communicated with the liquid outlet groove and arranged axially along the cylindrical valve core monomer.

[0006] Furthermore, a sealing stuffing box is arranged between the inner wall of the central hole at the top end of the valve cover and the valve stem, and the outside of the stuffing box is fixedly connected to the valve cover through a stuffing gland plate and screws.

[0007] Furthermore, a sealing ring is installed between the valve stem and the valve body lining.

[0008] Furthermore, the outlet ceramic lining and the inlet ceramic lining are fixed on the inner wall of the valve body through a process of gluing or hot fitting.

[0009] Compared with the prior art, the advantages of the present utility model are as follows: for the ceramic labyrinth angle valve designed by the present utility model, a plurality of multi-stage zigzag-shaped flow channels are evenly distributed inside the valve core assembly. When the medium flows in, it can not only utilize the potential energy to consume kinetic energy in the vertical direction, but also form a counterflush when discharging from the liquid outlet groove at the upper end of the valve core monomer to offset the kinetic energy, thereby reducing the wear on the valve core assembly, achieving long-term reliable use under the medium working conditions of large pressure difference, fast flow rate, and severe erosion and wear, and greatly improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a cross-sectional view of the ceramic labyrinth angle valve of the present utility model in the fully closed state;

[0011] Figure 2 is a cross-sectional view of the ceramic labyrinth angle valve of the present utility model in the fully open state;

[0012] Figure 3 is an overall structural schematic diagram of the cylindrical valve core monomer of the present utility model;

[0013] Figure 4 is a schematic diagram of the flow direction of the medium inside the valve core assembly of the present utility model;

[0014] Figure 5 is a top view of the medium in the valve core assembly of the present utility model in the moving state.

[0015] Wherein:

[0016] 1 - valve body, 2 - outlet ceramic lining, 3 - valve seat, 4 - valve core assembly, 5 - valve body lining, 6 - sealing ring, 7 - valve cover, 8 - stuffing gland plate, 9 - sealing stuffing box, 10 - valve stem, 11 - inlet ceramic lining,

[0017] 31 - conical surface, 41 - cylindrical valve core monomer, 42 - guide post, 43 - third flow channel, 44 - liquid inlet, 45 - liquid outlet groove, 46 - fourth flow channel, 47 - fifth flow channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Hereinafter, for the convenience of those skilled in the art to understand the technical solution of the present utility model, further description will be made with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model.

[0019] In the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present utility model. However, obviously, one or more embodiments can also be implemented without these specific details. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0020] As Figure 1-2 shown, it is a cross-sectional view of the ceramic labyrinth angle valve of the present utility model, including a valve body 1 and a valve stem 10. The valve stem 10 is prepared in the form of ceramics, corrosion-resistant alloy or metal with a coating. A valve cover 7 is arranged at the top of the valve body 1. The valve stem 10 passes through the central hole at the top end of the valve cover 7 and enters the valve body 1. A sealing stuffing box 9 is arranged between the inner wall of the central hole at the top end of the valve cover 7 and the valve stem 10. The outside of the sealing stuffing box 9 is fixedly connected to the valve cover 7 through a stuffing gland plate 8 and screws. A medium outlet is arranged at the bottom of the valve body 1, and a medium inlet perpendicular to the medium outlet is arranged on the side of the valve body 1. The inner walls of the medium outlet and the medium inlet are closely attached with an outlet ceramic lining 2 and an inlet ceramic lining 11. The outlet ceramic lining 2 and the inlet ceramic lining 11 are prepared from ceramics or corrosion-resistant alloy. Specifically, during implementation, the outlet ceramic lining 2 and the inlet ceramic lining 11 are fixed on the inner wall of the valve body 1 through an adhesive or hot-fitting process. A valve seat 3 and a valve body lining 5 are arranged in the inner cavity of the valve body 1. The valve seat 3 is arranged at the top end of the medium outlet. The central hole of the valve seat 3 is communicated with the medium outlet to form a first flow channel for the medium to flow out. A conical surface 31 for sealing cooperation with the bottom of the valve stem 10 is arranged on the inner side of the top of the central hole of the valve seat 3. The valve stem 10 realizes the on-off of the medium by closely fitting with the conical surface 31 of the lower valve seat 3. A sealing ring 6 is installed between the valve stem 10 and the valve body lining 5 to maintain sealing during the up-and-down sliding of the valve stem 10 and prevent the leakage of the medium. A space for installing a valve core assembly 4 is formed by surrounding between the valve body lining 5 and the valve seat 3. The side of the valve body lining 5 is communicated with the medium inlet to form a second flow channel for the medium to flow in. The valve core assembly 4 includes several groups of cylindrical valve core monomers 41. The several groups of cylindrical valve core monomers 41 are connected in series up and down through guide posts 42, and the upper and lower ends are respectively sealed and connected to the valve body lining 5 and the valve seat 3 through the guide posts 42.

[0021] As Figure 3As shown, in a specific implementation, a third flow channel 43 for medium circulation is axially arranged at the center of the cylindrical valve core monomer 41, and the inner diameter of the third flow channel 43 is adapted to the outer diameter of the valve stem 10. A number of liquid inlets 44 for medium flow are evenly arranged on the outer circumference of the cylindrical valve core monomer 41, and a number of liquid outlets 45 for medium flow are correspondingly arranged on the top of the cylindrical valve core monomer 41. The plurality of liquid outlets 45 merge the inflowing medium into the third flow channel 43, and the liquid inlet 44 and the liquid outlet 45 are connected by a zigzag flow channel. The medium flows into the third flow channel 43 through the zigzag flow channel, and the flow rate of the medium is regulated and controlled by the valve stem 10 sliding up and down in the third flow channel 43. As shown in FIG. Figure 4-5 As shown, in a specific implementation, the zigzag flow channel includes a fourth flow channel 46 connected to the liquid inlet 44 and arranged along the radial direction of the cylindrical valve core monomer 41, and a fifth flow channel 47 connected to the liquid outlet groove 45 and arranged along the axial direction of the cylindrical valve core monomer 41. The fourth flow channel 46, the fifth flow channel 47 and the liquid outlet groove 45 form a Z-shaped flow channel in the longitudinal section. As shown in the figure, after the medium flows in from the medium inlet, it passes through the fourth flow channel 46, the fifth flow channel 47 and the liquid outlet groove 45 in sequence and then merges into the third flow channel 43, and the flow rate of the medium is controlled by the up and down sliding of the valve body 10.

[0022] In this embodiment, the cylindrical valve core monomer 41 can adopt an integrated molding design, and can be processed by only drilling holes in the outer contour and the upper end, and then milling a flat surface on the upper end surface. The manufacturing process is simple, which greatly reduces the processing cost of the labyrinth valve core.

[0023] In summary, the ceramic labyrinth angle valve designed by the utility model has multiple levels of zigzag flow channels evenly distributed in the valve core assembly. When the medium flows in, it can not only consume kinetic energy by utilizing potential energy in the vertical direction, but also offset the kinetic energy when the liquid is discharged from the upper end of the valve core monomer, thereby reducing the wear on the valve core assembly, and achieving long-term reliable use under medium conditions with large pressure difference, fast flow rate, and severe erosion and wear, greatly improving the service life. In addition, the main body of this embodiment is made entirely of ceramic material, and the natural wear-resistant properties of ceramics are utilized to greatly improve the service life of the valve body and ensure the reliable transmission of pipeline media.

[0024] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A ceramic labyrinth angle valve, characterized in that: The invention comprises a valve body (1) and a valve stem (10); a valve cover (7) is arranged on the top of the valve body (1); the valve stem (10) penetrates into the valve body (1) from the top center hole of the valve cover (7); a medium outlet is arranged at the bottom of the valve body (1); a medium inlet perpendicular to the medium outlet is arranged on the side of the valve body (1); an outlet ceramic lining (2) and an inlet ceramic lining (11) are tightly attached to the inner walls of the medium outlet and the medium inlet; a valve seat (3) and a valve body lining (5) are arranged in the inner cavity of the valve body (1); the valve seat (3 ) is arranged at the top of the medium outlet; the center hole of the valve seat (3) is connected to the medium outlet to form a first flow channel for medium outflow; the inner side of the top of the center hole of the valve seat (3) is provided with a conical surface (31) that is sealed with the bottom of the valve stem; the valve body lining (5) and the valve seat (3) are surrounded to form a space for installing the valve core assembly (4); the side of the valve body lining (5) is connected to the medium inlet to form a second flow channel for medium inflow; the valve core assembly (4) includes a plurality of groups of cylindrical valve core monomers (41); the plurality of groups of cylindrical valve core monomers (41) are connected in series up and down through guide columns (42), and the upper and lower ends are respectively sealedly connected to the valve body lining (5) and the valve seat (3) through the guide columns (42); a third flow channel (43) for medium circulation is arranged in the center of the cylindrical valve core monomer (41) along the axial direction; the inner diameter of the third flow channel (43) is adapted to the outer diameter of the valve stem (10); a plurality of medium inlet ports are evenly arranged on the outer circumferential surface of the cylindrical valve core monomer (41) A liquid inlet (44); a plurality of liquid outlet grooves (45) for medium outflow are correspondingly arranged at the top of the cylindrical valve core monomer (41); the plurality of liquid outlet grooves (45) collect the inflowing medium into the third flow channel (43); the liquid inlet (44) and the liquid outlet grooves (45) are connected through a zigzag flow channel; the medium flows into the third flow channel (43) through the zigzag flow channel, and the flow rate of the medium is controlled by the valve stem (10) sliding up and down in the third flow channel (43).

2. The ceramic labyrinth angle valve according to claim 1, characterized in that: The zigzag flow channel comprises a fourth flow channel (46) connected to the liquid inlet (44) and arranged radially along the cylindrical valve core monomer (41), and a fifth flow channel (47) connected to the liquid outlet groove (45) and arranged axially along the cylindrical valve core monomer (41).

3. The ceramic labyrinth angle valve according to claim 2, characterized in that: A sealing stuffing box (9) is arranged between the inner wall of the top center hole of the valve cover (7) and the valve stem (10), and the outside of the sealing stuffing box (9) is fixedly connected to the valve cover (7) through a stuffing pressure plate (8) and screws.

4. The ceramic labyrinth angle valve according to claim 3, characterized in that: A sealing ring (6) is installed between the valve stem (10) and the valve body lining (5).

5. The ceramic labyrinth angle valve according to claim 4, characterized in that: The outlet ceramic lining (2) and the inlet ceramic lining (11) are fixed to the inner wall of the valve body (1) by means of gluing or heat-fitting processes.

Images