steering valve

Abstract

This utility model relates to the field of chemical production and transportation technology, and discloses a diverting valve, including a valve core, a housing sleeved on the valve core, and a limiting component disposed on the housing. Multiple output ports are circumferentially spaced on the side wall of the housing. The valve core has an internal transition channel, which includes a first section communicating with the outside of the diverting valve, and a second section for connecting the first section to the output ports. The valve core can rotate relative to the housing so that the second section can selectively engage with any output port. The limiting component positions the valve core at the position where the second section engages with the corresponding output port. Therefore, compared with the prior art, this utility model avoids the existence of pipelines between the input port and non-connected output ports, thereby significantly reducing fluid residue in the pipeline. Simultaneously, it not only improves the metering accuracy during fluid transportation but also effectively prevents cross-contamination during switching processes, ensuring fluid purity and product quality.

Description

Technical Field

[0001] This utility model relates to the field of chemical production and transportation technology, and specifically to a steering valve. Background Technology

[0002] In chemical production processes, the distribution and transportation of liquid media is one of the key process operations. To meet the need to transport a liquid media to multiple storage tanks, reactors, or other material-using equipment, existing technologies typically employ a multi-valve combination switching method. This involves setting up multiple independent valves to control the on / off state of each branch pipeline, thereby achieving the switching of fluid flow direction. While this type of structure achieves the function of diverting flow, it also has a number of shortcomings.

[0003] Because the pipes and casing before each branch form a closed space when not in use—a so-called "blind" structure—the liquid medium in this area cannot be drained or replaced in a timely manner, easily resulting in residue. Residual liquid in the blind cavity can cause material conveying deviations in processes requiring high metering accuracy (such as high-value-added material conveying, fine chemical batching, or quantitative filling), affecting metering accuracy, and even causing cross-contamination during flow path switching, thus impacting product quality. Utility Model Content

[0004] The purpose of this invention is to overcome the problem of residual liquid remaining in the pipeline when the pipeline is not in operation, and to provide a diverting valve.

[0005] To achieve the above objectives, this utility model provides a steering valve, including a valve core, a housing sleeved on the valve core, and a limiting component disposed on the housing. The housing has a plurality of output ports spaced circumferentially on its side wall. The valve core has a transfer channel, which includes a first section communicating with the outside of the steering valve and a second section for communicating the first section with the output ports. The valve core can rotate relative to the housing so that the second section selectively engages with one of the output ports. The limiting component is used to position the valve core at the position where the second section engages with one of the output ports.

[0006] Optionally, the limiting component is a positioning bead assembly, which includes a spring in a compressed state and a ball located at the head end of the spring, with the tail end of the spring connected to the outer shell.

[0007] The valve core is provided with multiple grooves for inserting balls and arranged at intervals along the circumference of the valve core. Each groove corresponds to a different output port.

[0008] Optionally, a through hole is provided on the side wall of the housing, and a fixing seat is provided at the end of the through hole away from the valve core, and the tail end of the spring is connected to the fixing seat.

[0009] Optionally, the mounting base includes a set screw, which is threaded into the inside of the through hole to adjust the amount of deformation of the spring under compression.

[0010] Optionally, the valve core includes a core body and rotating bearings respectively disposed at both ends of the core body, and the corresponding ends of the outer shell are provided with bearing bushings sleeved on the rotating bearings to limit the relative position between the valve core and the outer shell.

[0011] Optionally, the valve core also includes a plurality of first annular grooves provided on the core body, each of which is provided with a first sealing ring, which is used to seal between the core body and the outer shell.

[0012] Optionally, the first section of the transition channel is located on the core, and the other section is located on a bearing at one end of the core. The second section of the transition channel is located on the core and penetrates the wall of the core.

[0013] Optionally, the core is provided with a second annular groove, which is configured to surround the port of the second section located on the outer wall of the core. A second sealing ring is provided in the second annular groove, which is used to seal the port and the output port of the second section.

[0014] Optionally, a drive component is connected to the valve core, which is used to drive the valve core to rotate.

[0015] Optionally, a drive rod is connected to the valve core, and the drive rod is configured to be manipulated to drive the valve core to rotate.

[0016] Through the above technical solution, this utility model sets up a transition channel composed of a first section and a second section inside the valve core. The first section accepts external liquid media, while the second section can selectively and accurately connect with one of multiple output ports during the rotation of the valve core, thereby guiding the liquid media to the corresponding output port and flowing to the outside of the diverting valve. Simultaneously, a limiting component on the outer shell precisely controls the rotation angle of the valve core, ensuring accurate alignment of the channel with the target output port during each switch. Therefore, compared with the prior art, this utility model avoids the existence of pipelines between the input port and non-connected output ports, significantly reducing fluid residue in the pipeline. Furthermore, it not only improves the metering accuracy during fluid transportation but also effectively prevents cross-contamination during switching, ensuring fluid purity and product quality. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of the steering valve of this utility model;

[0018] Figure 2 This is a top view schematic diagram of the steering valve of this utility model;

[0019] Figure 3 This is a schematic diagram of the limiting component structure of this utility model;

[0020] Figure 4 This is a front view structural diagram of the valve core of this utility model;

[0021] Figure 5 yes Figure 4 A schematic diagram of the right-side structure.

[0022] Explanation of reference numerals in the attached figures

[0023] 1. Valve core; 101. Groove; 102. First annular groove; 103. Second annular groove; 104. Rotary bearing; 105. First sealing ring; 106. Second sealing ring; 2. Housing; 201. Through hole; 3. Limiting component; 301. Spring; 302. Ball; 303. Fixing base; 4. Output port; 5. Adapter channel; 501. First section; 502. Second section; 6. Bearing bushing; 7. End cover; 8. Drive component; 801. Drive rod. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] refer to Figure 1 and Figure 2 The directional valve of the present invention includes a valve core 1, a housing 2 sleeved on the valve core 1, and a limiting component 3 provided on the housing 2. A plurality of output ports 4 are provided circumferentially on the side wall of the housing 2. The valve core 1 is provided with a transfer channel 5, which includes a first section 501 communicating with the outside of the directional valve, the first section 501 being used to receive liquid medium outside the directional valve; and a second section 502 for connecting the first section 501 to the output ports 4 and guiding the liquid medium in the first section 501 to flow to the corresponding output port 4.

[0026] The valve core 1 can be roughly cylindrical in shape and is designed to rotate around its central axis relative to the outer casing 2. This allows the second section 502 to selectively connect with any one of the multiple output ports 4, enabling the liquid medium to flow into the selected output port 4 and exit through the diverting valve, thus switching the direction of the liquid medium output flow. It is important to note that, except for the output port 4 that connects with the second section 502, the other output ports 4 are sealed by the outer circumferential surface of the valve core 1, thereby preventing the existence of pipelines between the inlet and the non-connected output ports 4.

[0027] The limiting component 3 is configured to position the valve core 1 at a position where the second section 502 aligns with one of the output ports 4.

[0028] Therefore, compared with the prior art, this utility model avoids the existence of pipelines between the input port and the non-connected output port 4, thereby significantly reducing fluid residue in the pipeline. At the same time, it not only improves the metering accuracy during fluid transportation, but also effectively prevents cross-contamination during the switching process, ensuring fluid purity and product quality.

[0029] In some embodiments, six or any other number of output ports 4 may be provided, and the multiple output ports 4 may be distributed at equal intervals along the circumference of the housing 2.

[0030] The limiting component 3 in this utility model can have any suitable structure, see reference. Figure 3 In one embodiment, the limiting component 3 may be a positioning bead assembly, which includes a spring 301 in a compressed state and a ball 302 disposed at the head end of the spring 301, and the tail end of the spring 301 is connected to the outer shell 2.

[0031] The valve core 1 is provided with a plurality of grooves 101 for inserting balls 302 and arranged at intervals along the circumference of the valve core 1, and the plurality of grooves 101 correspond one-to-one with the plurality of output ports 4.

[0032] The depth of the groove 101 is less than the radius of the ball 302, allowing the ball 302 to smoothly disengage from the corresponding groove 101 during the rotation of the valve core 1 after insertion, thus not affecting the normal rotation of the valve core 1. The groove 101 can be a partially spherical recessed structure, the radius of which can be equal to or greater than the radius of the ball 302. It is worth noting that during the process of the ball 302 entering the groove 101, due to the pushing force of the spring 301 in the limiting component 3, the ball 302 will momentarily collide with the bottom of the groove 101, producing a slight vibration and sound. This vibration and sound can be perceived by the operator and serve as a physical feedback signal, indicating that the ball 302 has successfully entered the corresponding groove 101 position, that is, indicating that the second section 502 of the transition channel 5 has been accurately connected to the corresponding output port 4.

[0033] This structural design allows for real-time indication of the valve core 1's rotation position without the need for additional electronic sensors, effectively improving the intuitiveness and safety of operation and preventing fluid delivery errors or system malfunctions caused by misoperation or misalignment of the output port 4.

[0034] In some embodiments, a through hole 201 is provided on the side wall of the housing 2, and a fixing seat 303 is provided at the end of the through hole 201 away from the valve core 1. The tail end of the spring 301 is connected to the fixing seat 303 to limit the rebound space of the spring 301 and ensure that it always applies a stable thrust in the direction of the valve core 1, thereby pushing the ball 302 toward the valve core 1.

[0035] refer to Figure 1 In a specific embodiment of this utility model, the spring 301 can be entirely disposed inside the through hole 201, and the outer peripheral surface of the spring 301 contacts the wall surface of the through hole 201 to limit the radial movement of the spring 301 along the through hole 201, prevent the spring 301 from shifting under the action of the valve core 1 rotating or the ball 302 and the fixed seat 303 being squeezed at both ends of the spring 301, and ensure that the thrust direction remains stable.

[0036] In some embodiments, the through hole 201 may be configured to pass through the side wall of the housing 2, and the fixing seat 303 may include a set screw threaded to the inner side of the tail end of the through hole 201, so that the set screw can be adjusted axially along the through hole 201 to adjust the distance between itself and the port of the tail end of the through hole 201. It is understood that when the operator rotates the set screw to move it toward the valve core 1, the spring 301 is compressed by the axial thrust of the set screw because the ball 302 abuts against the surface of the valve core 1, thereby achieving precise adjustment of the compression deformation of the spring 301.

[0037] In some embodiments, to facilitate the disassembly and replacement of the limiting component, the width of the through hole 201 can be designed to be greater than the diameter of the ball 302, so that the ball 302 can be smoothly removed through the through hole 201. Specifically, one end of the spring 301 is fixedly connected to the set screw. The operator can unscrew the set screw (the set screw moves away from the valve core 1), thereby driving the spring 301 and the ball 302 out of the through hole 201 together, thereby realizing the quick replacement of the positioning ball component.

[0038] In some embodiments, the valve core 1 includes a core body and rotating bearings 104 respectively disposed at both ends of the core body. The corresponding ends of the outer shell 2 are provided with bearing bushings 6 sleeved on the rotating bearings 104 to limit the valve core 1 and the outer shell 2 to be coaxially arranged, thereby making the circumferential gap between the two more uniform.

[0039] In some embodiments, reference Figure 4 and Figure 5 The valve core 1 also includes a plurality of first annular grooves 102 provided on the core body, and each first annular groove 102 is provided with a first sealing ring 105, which is used to seal the core body and the outer shell 2.

[0040] In some embodiments, the first segment 501 of the transition channel 5 is partially disposed on the core body, and the other part is disposed on a bearing at one end of the core body. The second segment 502 of the transition channel 5 is disposed on the core body and penetrates the wall of the core body.

[0041] The core has a second annular groove 103, which is positioned around the port of the second segment 502 located on the outer wall of the core. A second sealing ring 106 is provided in the second annular groove 103, which is used to seal the port of the second segment 502 and the output port 4.

[0042] In one embodiment, a drive component 8 is connected to the valve core 1, which is used to drive the valve core 1 to rotate.

[0043] The drive component 8 may include a drive rod 801, which can be connected to the valve core 1 and manipulated to drive the valve core 1 to rotate. At the same time, the operator holding the drive rod 801 can feel the vibration of the ball 302 inserted into the groove 101.

[0044] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and all fall within the protection scope of the present invention.

Claims

1. A steering valve, characterized in that, The valve includes a valve core (1), a housing (2) fitted onto the valve core (1), and a limiting component (3) provided on the housing (2). The housing (2) has multiple output ports (4) spaced circumferentially on its side wall. The valve core (1) has a transfer channel (5) inside. The transfer channel (5) includes a first section (501) communicating with the outside of the steering valve, and a second section (502) for communicating the first section (501) with the output port (4). The valve core (1) can rotate relative to the housing (2) so that the second section (502) selectively engages with one of the output ports (4). The limiting component (3) is used to position the valve core (1) at the position where the second section (502) engages with one of the output ports (4).

2. The steering valve according to claim 1, characterized in that, The limiting component (3) is a positioning bead assembly, which includes a spring (301) in a compressed state and a ball (302) disposed at the head end of the spring (301). The tail end of the spring (301) is connected to the outer shell (2). The valve core (1) is provided with a plurality of grooves (101) for the ball (302) to be inserted and arranged at intervals along the circumference of the valve core (1), and the plurality of grooves (101) correspond one-to-one with the plurality of output ports (4).

3. The steering valve according to claim 2, characterized in that, The outer casing (2) has a through hole (201) that penetrates the side wall of the outer casing (2). A fixing seat (303) is provided at one end of the through hole (201) away from the valve core (1). The tail end of the spring (301) is connected to the fixing seat (303).

4. The steering valve according to claim 3, characterized in that, The fixing seat (303) includes a set screw, which is threaded to the inside of the through hole (201) to adjust the amount of deformation of the spring (301) under compression.

5. The steering valve according to claim 1, characterized in that, The valve core (1) includes a core body and rotating bearings (104) respectively disposed at both ends of the core body. The outer shell (2) is provided with bearing bushings (6) sleeved on the rotating bearings (104) at the corresponding ends to limit the relative position between the valve core (1) and the outer shell (2).

6. The steering valve according to claim 5, characterized in that, The valve core (1) also includes a plurality of first annular grooves (102) provided on the core body, and a first sealing ring (105) is provided in each first annular groove (102). The first sealing ring (105) is used to seal between the core body and the outer shell (2).

7. The steering valve according to claim 5, characterized in that, The second section (502) of the transition channel (5) is located on the core, and the other part is located on the bearing at one end of the core. The first section (501) of the transition channel (5) is located on the core and penetrates the wall of the core.

8. The steering valve according to claim 7, characterized in that, The core is provided with a second annular groove (103), which is arranged to surround the port of the second segment (502) located on the outer wall of the core. A second sealing ring (106) is provided in the second annular groove (103), which is used to seal the port of the second segment (502) and the output port (4).

9. The steering valve according to claim 1, characterized in that, A drive component (8) is connected to the valve core (1), and the drive component (8) is used to drive the valve core (1) to rotate.

10. The steering valve according to claim 1, characterized in that, A drive rod (801) is connected to the valve core (1), and the drive rod (801) is configured to be manipulated to drive the valve core (1) to rotate.

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