Multi-position directional valve

Abstract

This utility model discloses a multi-position directional valve, including a valve body, a valve stem, and a valve core. The valve body has a vertically oriented, circularly shaped central cavity. The valve body has at least two sets of channels communicating with the central cavity and distributed along its extension direction. Each channel set includes an inlet channel and multiple outlet channels. The valve stem passes through the valve body and is connected to the valve core. The valve core has multiple sets of control channels, the number of which corresponds to the number of channel sets. When the valve stem drives the valve core axially, the valve core has an open position where all control channels connect to their corresponding channel sets, and a closed position where all control channels are completely misaligned with their corresponding channel sets. This utility model allows for the simultaneous opening or shut-off of multiple pipelines with a single valve, featuring a simple structure, convenient and labor-saving operation, and lower cost.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a multi-position directional valve. Background Technology

[0002] In industries such as oil, natural gas, chemicals, water treatment, power, and long-distance pipelines, valves are commonly used to open and close pipelines. Currently, ball valves or plug valves are typically used for opening and closing in main pipelines and pump outlets. Most existing pipeline valves (such as ball valves or plug valves) rely on manual operation, and some electric valves can only handle the opening and closing of a single valve. In multi-pipeline applications, where multiple valves are often required to control fluid flow, existing valves often cannot guarantee that all valves open or shut off simultaneously. To address the aforementioned problems, utility model patent application CN202120414551.8 discloses a multi-ball valve that can be opened and closed simultaneously. It includes several identical ball valves arranged on the same horizontal line, a power source, and a bracket for mounting the ball valves and the power source. Each ball valve includes a valve body, a valve cover, a valve seat within the valve body, a valve stem, and a valve core connected to the valve stem. The valve core is mounted on the valve seat via an upper and lower fixing plate. The valve cover has a stuffing box. A transmission mechanism is movably connected to the power source. Both the ball valve and the transmission mechanism are equipped with matching meshing mechanisms. However, this structure also requires multiple ball valves for control, resulting in a complex structure, high cost, and labor-intensive operation. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-position reversing valve. This utility model can realize the simultaneous opening or shut-off of multiple pipelines through a single valve. It has a simple structure, is convenient and labor-saving to operate, and has a lower cost.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-position directional valve, including a valve body, a valve stem, and a valve core; the valve body has a central cavity with a circular cross-section opened vertically, and the valve body has at least two sets of channels communicating with the central cavity and distributed along the extension direction of the central cavity, the channel sets including inlet channels and multiple outlet channels, the valve stem passing through the valve body and connected to the valve core, the valve core having multiple sets of control channels with a number equivalent to the channel sets, when the valve stem drives the valve core to move axially, the valve core has an open position where all control channels conduct the corresponding channel sets and a closed position where all control channels are completely misaligned and blocked from the corresponding channel sets.

[0005] By adopting the above technical solution, multiple pipelines can be opened or cut off simultaneously simply by operating the valve stem to move the valve core to the open or closed position. The structure is simple, the operation is convenient and labor-saving, and the cost is lower.

[0006] The present invention is further configured such that there are two channel groups, namely an upper channel group and a lower channel group. The upper channel group includes an upper inlet channel and multiple upper outlet channels disposed on the periphery of the valve body. The lower channel group includes a lower inlet channel and multiple lower outlet channels disposed on the periphery of the valve body. There are also two control channels, namely an upper control channel for connecting the upper inlet channel and the multiple upper outlet channels, and a lower control channel for connecting the lower inlet channel and the multiple lower outlet channels.

[0007] By adopting the above technical solution, taking two sets of channels as an example, by setting two control channels on the valve core, when the valve core moves to the open position, the upper control channel connects the upper inlet channel with multiple upper outlet channels, and the lower control channel connects the lower inlet channel with multiple lower outlet channels, so that multiple pipelines can be opened at the same time. When the valve core moves to the closed position, the lower control channel is misaligned with the lower channel group, that is, the lower inlet channel is disconnected from multiple lower outlet channels, so that multiple pipelines can be cut off at the same time.

[0008] The present invention is further configured such that the valve core is hollow, and a partition is provided inside the valve core, which divides the internal space of the valve core into an upper cavity and a lower cavity. An upper water inlet and multiple upper water outlets are provided on the periphery of the valve core, and the upper water inlet, the upper cavity, and the multiple upper water outlets are connected to form the upper control channel; a lower water inlet is provided at the lower end of the valve core, and multiple lower water outlets are also provided on the periphery of the valve core, and the lower water inlet, the lower cavity, and the multiple lower water outlets are connected to form the lower control channel.

[0009] By adopting the above technical solution, the specific setting of the upper control channel and the lower control channel can be processed on the sleeve-shaped valve core, which has a simple structure and is very convenient to process.

[0010] The present invention is further configured such that the partition plate and the valve core are an integral structure.

[0011] By adopting the above technical solution, it is the first way to set up the partition, which has high structural strength and no risk of leakage.

[0012] The present invention is further configured such that the partition plate and the valve core are fixed by welding, and an O-ring is sandwiched between the partition plate and the valve core.

[0013] By adopting the above technical solution, it is the second way to set up the partition, which is not only easy to process, but also has good sealing performance.

[0014] The present invention is further configured such that an annular groove is provided on the outer periphery of the valve core at a position corresponding to the position above the partition plate, and the outer end of the upper water inlet is connected to the annular groove.

[0015] By adopting the above technical solution, regardless of the orientation of the valve core, when the valve core is in the open position, the inlet channel can be connected to the upper control channel, which greatly facilitates the assembly and operation of the valve.

[0016] The present invention is further configured such that an upper valve seat and a lower valve seat in the shape of a sleeve are installed on the inner wall of the middle cavity, the inner circular surfaces of the upper valve seat and the lower valve seat are in contact with the outer circular surface of the valve core, and the upper valve seat and the lower valve seat are respectively provided with a plurality of upper holes corresponding to the upper outlet channel and a plurality of lower holes corresponding to the lower outlet channel.

[0017] By adopting the above technical solution and setting a sleeve-shaped valve seat, not only can the friction between the valve core and the inner wall of the valve body cavity be reduced, but the valve sealing performance is also better when the valve core is in the closed position.

[0018] The present invention is further configured such that the valve body includes a main body and an upper cover and a lower cover connected to the upper and lower ends of the main body by fasteners. An upper mounting groove and a lower mounting groove are respectively provided on the inner wall of the valve body. The upper cover and the lower cover respectively press the upper valve seat and the lower valve seat into the upper mounting groove and the lower mounting groove. The valve stem passes through the upper cover and is connected to the valve core. The lower inlet channel is provided on the lower cover.

[0019] By adopting the above technical solution, the upper and lower covers can be installed to achieve the clamping and fixing of the upper and lower valve seats, making the installation of the upper and lower valve seats more convenient.

[0020] The present invention is further provided that the upper cover is also provided with a bracket, and an actuator is installed on the bracket. The output end of the actuator is connected to the valve stem and is used to drive the valve stem to move axially.

[0021] By adopting the above technical solution, the actuator can be a pneumatic actuator, a hydraulic actuator, or an electric actuator. The actuator drives the valve stem to move, which in turn drives the valve core to change position, thereby realizing the opening and closing operation of the valve. This not only allows for rapid opening and closing but also provides high control precision. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the valve core of this utility model.

[0024] In the diagram: 1. Valve body; 2. Valve stem; 3. Valve core; 4. Channel assembly; 41. Inlet channel; 41a. Upper inlet channel; 41b. Upper outlet channel; 42. Outlet channel; 42a. Lower inlet channel; 42b. Lower outlet channel; 5. Control channel; 5a. Upper control channel; 5b. Lower control channel; 6. Baffle; 7. Upper chamber; 8. Lower chamber; 9. Upper inlet; 10. Upper outlet; 11. Lower inlet; 12. Lower outlet; 13. O-ring; 14. Annular groove; 15. Upper valve seat; 16. Lower valve seat; 17. Upper hole; 18. Lower hole; 19. Upper cover; 20. Lower cover; 21. Upper mounting groove; 22. Lower mounting groove; 23. Bracket; 24. Actuator; 25. Middle chamber. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example: As attached Figure 1 and attached Figure 2 The multi-position directional valve shown includes a valve body 1, a valve stem 2, and a valve core 3. The valve body 1 has a vertically oriented, circularly shaped central cavity 25. The valve body 1 has at least two sets of channel groups 4 connected to the central cavity 25 and distributed along its extension direction. Each channel group 4 includes an inlet channel 41 and multiple outlet channels 42. The valve stem 2 passes through the valve body 1 and is connected to the valve core 3. The valve core 3 is cylindrical; in this embodiment, the two can be integrated. The valve core 3 has multiple sets of control channels 5, the number of which corresponds to the number of channel groups 4. When the valve stem 2 moves the valve core 3 axially, the valve core 3 has an open position where all control channels 5 connect to their corresponding channel groups 4, and a closed position where all control channels 5 are completely misaligned with and blocked from their corresponding channel groups 4. By simply operating the valve stem 2 to move the valve core 3 to the open or closed position, multiple pipelines can be opened or shut off simultaneously. The structure is simple, operation is convenient and labor-saving, and the cost is lower.

[0027] The following is one specific implementation method of this embodiment:

[0028] As attached Figure 1 and attached Figure 2As shown, there are two channel groups 4, namely an upper channel group 4 and a lower channel group 4. The upper channel group 4 includes an upper inlet channel 41a and multiple upper outlet channels 41b disposed on the outer periphery of the valve body 1. The lower channel group 4 includes a lower inlet channel 42a and multiple lower outlet channels 42b disposed on the outer periphery of the valve body 1. There are also two control channels 5, namely an upper control channel 5a for connecting the upper inlet channel 41a and multiple upper outlet channels 41b, and a lower control channel 5b for connecting the lower inlet channel 42a and multiple lower outlet channels 42b. Specifically, it can be "two inlets and six outlets", "two inlets and eight outlets", etc. Taking two sets of channel groups 4 as an example, by setting two control channels 5 on the valve core 3, when the valve core 3 moves to the open position, the upper control channel 5a connects the upper inlet channel 41a with multiple upper outlet channels 41b, and the lower control channel 5b connects the lower inlet channel 42a with multiple lower outlet channels 42b, so that multiple pipelines can be opened at the same time. When the valve core 3 moves to the closed position, the lower control channel 5b is misaligned with the lower channel group 4, that is, the lower inlet channel 42a is disconnected from multiple lower outlet channels 42b, so that multiple pipelines can be cut off at the same time.

[0029] As attached Figure 2 As shown, the valve core 3 is hollow, and a partition 6 is provided inside the valve core 3, which divides the internal space of the valve core 3 into an upper cavity 7 and a lower cavity 8. An upper inlet 9 and multiple upper outlets 10 are provided around the valve core 3. The upper inlet 9, the upper cavity 7, and the multiple upper outlets 10 are connected to form the upper control channel 5a. A lower inlet 11 is provided at the lower end of the valve core 3, and multiple lower outlets 12 are also provided around the valve core 3. The lower inlet 11, the lower cavity 8, and the multiple lower outlets 12 are connected to form the lower control channel 5b. This specific arrangement of the upper control channel 5a and the lower control channel 5b allows for machining on the sleeve-shaped valve core 3, resulting in a simple structure and convenient machining.

[0030] Among them, the first setting method of the baffle 6 is: the baffle 6 and the valve core 3 are an integral structure. This setting method has high structural strength and no risk of leakage.

[0031] The second arrangement of the partition 6 is as follows: the partition 6 and the valve core 3 are fixed by welding, and an O-ring 13 is sandwiched between the partition 6 and the valve core 3, which is not only easy to process, but also has good sealing performance.

[0032] As attached Figure 2 As shown, an annular groove 14 is provided on the outer periphery of the valve core 3 at the position above the partition plate 6, and the outer end of the upper water inlet 9 is connected to the annular groove 14. Regardless of the orientation of the valve core 3, when the valve core 3 is in the open position, the inlet channel 41 can be connected to the upper control channel 5a, which greatly facilitates the assembly and operation of the valve.

[0033] As attached Figure 1 As shown, an upper valve seat 15 and a lower valve seat 16 in the shape of a sleeve are installed on the inner wall of the central cavity 25. The inner circular surfaces of the upper valve seat 15 and the lower valve seat 16 are in contact with the outer circular surface of the valve core 3. The upper valve seat 15 and the lower valve seat 16 are respectively provided with multiple upper holes 17 corresponding to the upper outlet channel 41b and multiple lower holes 18 corresponding to the lower outlet channel 42b. The sleeve-shaped valve seats not only reduce the friction between the valve core 3 and the inner wall of the central cavity 25 of the valve body 1, but also improve the sealing performance of the valve when the valve core 3 is in the closed position.

[0034] As attached Figure 1 As shown, the valve body 1 includes a main body 26 and an upper cover 19 and a lower cover 20 connected to the upper and lower ends of the main body 26 by fasteners. The fasteners can be screws. The attached figure only shows the structure of the upper cover 19 and the main body 26 connected by screws. The connection between the lower cover 20 and the main body 26 is similar. The inner wall of the valve body 1 is provided with an upper mounting groove 21 and a lower mounting groove 22. The upper cover 19 and the lower cover 20 respectively press the upper valve seat 15 and the lower valve seat 16 into the upper mounting groove 21 and the lower mounting groove 22. The valve stem 2 passes through the upper cover 19 and is connected to the valve core 3. A packing assembly can be provided between the upper cover 19 and the valve stem 2 for sealing. The sealing method of the packing assembly is a conventional structure, that is, the packing gland presses the packing between the upper cover 19 and the valve stem 2 to form a seal. The lower inlet channel 42a is provided on the lower cover 20. Once the upper cover 19 and the lower cover 20 are installed, the upper valve seat 15 and the lower valve seat 16 can be pressed and fixed, making the installation of the upper valve seat 15 and the lower valve seat 16 more convenient.

[0035] In addition, the outer circular surfaces of the upper valve seat 15 and the lower valve seat 16 need to be provided with sealing rings that form a sealing fit with the inner circular surfaces of the upper mounting groove 21 and the lower mounting groove 22, respectively. The outer circular surface of the valve core 3 also needs to be provided with multiple sealing rings to prevent the medium from passing through the gap between the valve core 3 and the upper valve seat 15, as well as the gap between the valve core 3 and the lower valve seat 16.

[0036] As attached Figure 1 As shown, the upper cover 19 is also provided with a bracket 23, on which an actuator 24 is mounted. The output end of the actuator 24 is connected to the valve stem 2 and is used to drive the valve stem 2 to move axially. The actuator 24 is a pneumatic actuator 24, a hydraulic actuator 24, or an electric actuator 24. By driving the valve stem 2 to move through the actuator 24, the position of the valve core 3 is changed, thereby realizing the opening and closing operation of the valve. The opening and closing action is not only rapid, but also has high control precision.

Claims

1. A multi-position directional valve, comprising a valve body (1), a valve stem (2), and a valve core (3); characterized in that: The valve body (1) has a central cavity (25) with a circular cross-section that is opened vertically. The valve body (1) has at least two sets of channel groups (4) that communicate with the central cavity (25) and are distributed along the extension direction of the central cavity (25). The channel group (4) includes an inlet channel (41) and multiple outlet channels (42). The valve stem (2) passes through the valve body (1) and is connected to the valve core (3). The valve core (3) has multiple sets of control channels (5) with a number equivalent to the channel groups (4). When the valve stem (2) drives the valve core (3) to move axially, the valve core (3) has an open position where all control channels (5) conduct the corresponding channel group (4) and a closed position where all control channels (5) are completely misaligned and blocked from the corresponding channel group (4).

2. The multi-position directional valve according to claim 1, characterized in that: The number of channel groups (4) is two, namely an upper channel group (4) and a lower channel group (4). The upper channel group (4) includes an upper inlet channel (41a) and multiple upper outlet channels (41b) disposed on the outer periphery of the valve body (1). The lower channel group (4) includes a lower inlet channel (42a) and multiple lower outlet channels (42b) disposed on the outer periphery of the valve body (1). The number of control channels (5) is also two, namely an upper control channel (5a) for connecting the upper inlet channel (41a) and multiple upper outlet channels (41b), and a lower control channel (5b) for connecting the lower inlet channel (42a) and multiple lower outlet channels (42b).

3. The multi-position directional valve according to claim 2, characterized in that: The valve core (3) is hollow. A partition (6) is provided inside the valve core (3). The partition (6) divides the internal space of the valve core (3) into an upper cavity (7) and a lower cavity (8). An upper water inlet (9) and multiple upper water outlets (10) are provided on the periphery of the valve core (3). The upper water inlet (9), the upper cavity (7) and the multiple upper water outlets (10) are connected to form the upper control channel (5a). A lower water inlet (11) is provided at the lower end of the valve core (3). Multiple lower water outlets (12) are also provided on the periphery of the valve core (3). The lower water inlet (11), the lower cavity (8) and the multiple lower water outlets (12) are connected to form the lower control channel (5b).

4. The multi-position directional valve according to claim 3, characterized in that: The partition (6) and the valve core (3) are an integral structure.

5. The multi-position directional valve according to claim 3, characterized in that: The partition (6) and the valve core (3) are fixed by welding, and an O-ring (13) is sandwiched between the partition (6) and the valve core (3).

6. The multi-position directional valve according to claim 3, characterized in that: The valve core (3) has an annular groove (14) on its outer periphery corresponding to the position above the partition plate (6), and the outer end of the upper water inlet (9) is connected to the annular groove (14).

7. The multi-position directional valve according to claim 2, characterized in that: The inner wall of the middle cavity (25) is equipped with an upper valve seat (15) and a lower valve seat (16) in the shape of a sleeve. The inner circular surfaces of the upper valve seat (15) and the lower valve seat (16) are in contact with the outer circular surface of the valve core (3). The upper valve seat (15) and the lower valve seat (16) are respectively provided with a plurality of upper holes (17) corresponding to the upper outlet channel (41b) and a plurality of lower holes (18) corresponding to the lower outlet channel (42b).

8. The multi-position directional valve according to claim 7, characterized in that: The valve body (1) includes a main body (26) and an upper cover (19) and a lower cover (20) connected to the upper and lower ends of the main body (26) by fasteners. The inner wall of the valve body (1) is provided with an upper mounting groove (21) and a lower mounting groove (22). The upper cover (19) and the lower cover (20) press the upper valve seat (15) and the lower valve seat (16) into the upper mounting groove (21) and the lower mounting groove (22) respectively. The valve stem (2) passes through the upper cover (19) and is connected to the valve core (3). The lower inlet channel (42a) is provided on the lower cover (20).

9. The multi-position directional valve according to claim 8, characterized in that: The upper cover (19) is also provided with a bracket (23), and an actuator (24) is installed on the bracket (23). The output end of the actuator (24) is connected to the valve stem (2) and is used to drive the valve stem (2) to move axially.

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