Three-way regulating valve
By designing a detachable sealing seat ring and valve core structure, the wear and leakage problem of the three-way regulating valve was solved, enabling rapid replacement of worn parts and stable sealing performance, thus reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2026-03-24
AI Technical Summary
Existing three-way control valves are prone to wear and leakage at the valve seat and valve core contact surfaces, and are inconvenient to maintain. After long-term use, their sealing performance deteriorates, the valve body is easily damaged, and the entire valve needs to be replaced frequently, resulting in high costs.
The design incorporates detachable first and second sealing rings, combined with the valve core's assembly structure. Through the use of sealing bevels and gaskets, it enables rapid replacement of worn parts while maintaining a tight seal.
The design of the removable sealing ring reduces maintenance costs, extends service life, and maintains stable sealing performance by only replacing worn parts.
Smart Images
Figure CN224033153U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a three-way regulating valve and belongs to the technical field of regulating valve. BACKGROUND
[0002] Straight stroke regulating mechanism is an important mechanism in fluid control field, including single seat regulating valve, double seat regulating valve, three-way valve, sleeve valve, angle valve, high pressure valve, diaphragm valve, pipe clamp valve, gate valve, slide valve, axial throttling valve, solenoid valve and digital valve etc. The common feature of these valves is that the valve stem moves in a straight line to achieve precise fluid control.
[0003] The three-way regulating valve has the characteristics of compact structure, light weight, sensitive action and accurate flow characteristics. It can be controlled by direct acceptance of control signals from regulating instruments and single-phase power supply, and can realize automatic regulating control of process pipeline fluid medium. It is widely used in precise control of gas, liquid and steam medium to keep parameters such as pressure, flow, temperature and liquid level at given values. It is suitable for dividing one fluid into two streams or combining two fluids into one through the three-way valve.
[0004] The existing three-way regulating valve generally includes a valve seat, a valve stem, a valve core and a valve cover. The valve seat is provided with an inlet channel and two outlet channels. The valve core controls the opening or closing of the two outlet channels. However, the contact surface of the valve seat and the valve core is prone to wear and leakage after long-term use. It is inconvenient to maintain, and the valve seat cannot be used normally when it is worn to a certain extent. In addition, the valve body is seriously damaged and the sealing performance is significantly reduced after long-term impact of the fluid. SUMMARY
[0005] In order to overcome the shortcomings of the prior art, the utility model provides a three-way regulating valve.
[0006] The utility model discloses a technical scheme adopted by the utility model is: design a tee regulating valve, including valve body, stuffing box, tee connector, valve rod and valve core, the first flow channel and second flow channel are arranged respectively to the left and right two ends of valve body, the first mounting hole and second mounting hole are arranged respectively to the upper and lower two ends of valve body, the first mounting hole and second mounting hole place are arranged respectively the stuffing box and tee connector, the valve rod passes the stuffing box and is inserted into the valve body, and the valve core is arranged to one end of the valve rod in the valve body, and the first flow channel and second flow channel or the first flow channel and tee connector are controlled by the on-off of valve core. It still includes first seal seat ring and second seal seat ring, the communication hole that communicates first flow channel and second flow channel is arranged to the middle part of valve body, the first seal seat ring is arranged at the communication hole, the second seal seat ring is arranged at second mounting hole, and the valve core is arranged in the valve body between first seal seat ring and second seal seat ring.
[0007] Further, the first seal seat ring and second seal seat ring inner part are provided with first sealing slope and second sealing slope respectively, third sealing slope and fourth sealing slope are arranged on the valve core, when the first flow channel and second flow channel are disconnected by the valve core control, the first sealing slope on the first seal seat ring and the third sealing slope arranged on the valve core are attached, when the first flow channel and tee connector are disconnected by the valve core control, the second sealing slope inside the second seal seat ring and the fourth sealing slope arranged on the valve core are attached.
[0008] Further, the lower end of the communication hole is provided with a step, the lower end of the first seal seat ring is provided with a boss, the boss is on the step of the communication hole, and a sealing washer is arranged between the boss and the step.
[0009] Further, the middle part of the first seal seat ring is provided with a trumpet-shaped through hole, the middle part of the boss is provided with a cylindrical through hole, the trumpet-shaped through hole is communicated with the cylindrical through hole, and the first seal seat ring inner wall at the joint of the two is provided with the first sealing slope.
[0010] Further, the lower end of the valve rod is provided with a shaft shoulder and a limiting plate, and the valve core is arranged on the valve rod between the shaft shoulder and the limiting plate.
[0011] Further, the valve core includes a spacer ring and a sealing ring, the sealing ring is symmetrically arranged on the upper and lower sides of the spacer ring, the upper and lower sides of the spacer ring are respectively provided with clamping grooves, the sealing ring is arranged in the clamping groove, the upper end of the sealing ring on the upper side of the spacer ring is provided with a third sealing slope, and the lower end of the sealing ring on the lower side of the spacer ring is provided with a fourth sealing slope.
[0012] Further, the upper end of the valve rod is provided with a sliding limiting part, the sliding limiting part is inserted into the middle part of the stuffing box and can slide up and down, the shaft neck part is arranged between the sliding limiting part and the shaft shoulder, and the junctions of the shaft shoulder and the sliding limiting part with the shaft neck part are respectively provided with guide inclined surfaces.
[0013] Further, the upper end of the sliding limiting part of the valve rod is further provided with a mounting hole, and the mounting hole is provided with a connecting piece.
[0014] Further, the middle part of the stuffing box is provided with stuffing, and the upper end is provided with a pressing plate.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The utility model discloses a detachable first sealing seat ring and second sealing seat ring are arranged, and the assembly structure of the valve core is added, after long -time use, if the valve core contact surface is seriously worn and causes leakage, only needs to carry out structure replacement to specific wear place, and the long -term stability of the maintenance of the sealing property is kept. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.
[0018] Fig. 1 It is the utility model sectional view schematic diagram.
[0019] Fig. 2 It is the utility model valve rod and valve core assembly schematic diagram.
[0020] In the drawing: 1, valve body;2, stuffing box;3, three-way connector;4, valve rod;5, valve core;6, first flow channel;7, second flow channel;8, first sealing seat ring;9, second sealing seat ring;10, third sealing inclined surface;11, fourth sealing inclined surface;12, boss;13, shaft shoulder;14, limiting plate;15, spacer ring;16, sealing ring;17, clamping groove;18, shaft neck part;19, guide inclined surface;20, connecting piece. DETAILED DESCRIPTION
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Example 1
[0024] like Figs. 1-2 As shown: A three-way regulating valve includes a valve body 1, a stuffing box 2, a three-way connector 3, a valve stem 4, and a valve core 5. The valve body 1 has a first flow channel 6 and a second flow channel 7 at its left and right ends, respectively. The valve body 1 has a first mounting hole and a second mounting hole (which essentially form a third and a fourth flow channel) at its upper and lower ends, respectively. The stuffing box 2 and the three-way connector 3 are respectively installed at the first and second mounting holes. The valve stem 4 passes through the stuffing box 2 (the valve stem 4 is slidably connected to the stuffing box 2) and enters the valve body 1. The valve core 5 is installed at the end of the valve stem 4 located inside the valve body 1. The valve core 5 controls the opening and closing of the first flow channel 6 and the second flow channel 7, or the first flow channel 6 and the three-way connector 3. The three-way regulating valve described in this embodiment further includes a first sealing seat ring 8 and a second sealing seat ring 9. The valve body 1 has a connecting hole in the middle that connects the first flow channel 6 and the second flow channel 7. The first sealing seat ring 8 is located at the connecting hole, and the second sealing seat ring 9 is located at the second mounting hole. It can be understood that the first sealing seat ring 8 and the second sealing seat ring 9 are usually designed to be detachably connected, such as by threaded connection, to facilitate quick replacement after wear. The valve core 5 is located inside the valve body 1 between the first sealing seat ring 8 and the second sealing seat ring 9.
[0025] It should be noted that the stuffing box 2 can also be replaced by a bellows seal (leak-free design), a magnetic coupling seal (non-contact type), or a combined seal (packing + lip seal). It should also be noted that the three-way control valve described in this embodiment is typically equipped with a drive actuator, which can be achieved using conventional existing technologies and will not be described in detail here.
[0026] The valve stem 4 of the three-way regulating valve in this embodiment drives the valve core 5 to move along the axis, and the flow passage switching is realized by the contact of the sealing surface.
[0027] Upper state: the valve core 5 presses the first sealing seat ring 8 to block the communication between the first flow passage 6 and the second flow passage 7, and open the first flow passage 6 and the three-way connector 3.
[0028] Lower state: the valve core 5 presses the second sealing seat ring 9 to block the communication between the first flow passage 6 and the three-way connector 3, and open the first flow passage 6 and the second flow passage.
[0029] Embodiment 2
[0030] This embodiment is a further optimization and refinement of the structure of the three-way regulating valve based on embodiment 1, specifically:
[0031] The first sealing seat ring 8 and the second sealing seat ring 9 are respectively provided with a first sealing slope and a second sealing slope inside, and the valve core 5 is provided with a third sealing slope 10 and a fourth sealing slope 11. When the first flow passage 6 and the second flow passage 7 are disconnected by the valve core 5, the first sealing slope on the first sealing seat ring 8 is in contact with the third sealing slope 10 provided on the valve core 5. When the first flow passage 6 and the three-way connector 3 are disconnected by the valve core 5, the second sealing slope inside the second sealing seat ring 9 is in contact with the fourth sealing slope 11 provided on the valve core 5. When the sealing slope is severely worn and affects the sealing effect, the first sealing seat ring 8, the second sealing seat ring 9 or the valve core 5 can be replaced accordingly, saving cost, time and effort.
[0032] In this embodiment, the lower end of the communication hole is provided with a step, the lower end of the first sealing seat ring 8 is provided with a boss 12, the boss 12 abuts on the step of the communication hole, and a sealing gasket (not shown in the figure) is arranged between the boss 12 and the step, further improving the installation stability and sealing effect of the first sealing seat ring 8.
[0033] In this embodiment, the middle part of the first sealing seat ring 8 is provided with a trumpet-shaped through hole, the middle part of the boss 12 is provided with a cylindrical through hole, the trumpet-shaped through hole and the cylindrical through hole are communicated, and the first sealing slope is arranged on the inner wall of the first sealing seat ring 8 at the joint of the two.
[0034] Embodiment 3
[0035] This embodiment is a further optimization and refinement of the structure of the valve core 5 based on embodiment 2, specifically:
[0036] The lower end of the valve stem 4 is provided with a shaft shoulder 13 and a limiting plate 14, the valve core 5 is arranged on the valve stem 4 between the shaft shoulder 13 and the limiting plate 14, which is convenient for dismounting and replacing, and the installation is also more convenient.
[0037] In the embodiment, the valve core 5 comprises a partition ring 15 and a sealing ring 16, the sealing ring 16 is symmetrically arranged on the upper and lower sides of the partition ring 15, the partition ring 15 is respectively provided with a clamping groove 17 on the upper and lower sides, the sealing ring 16 is arranged in the clamping groove 17, the upper end of the sealing ring 16 located on the upper side of the partition ring 15 is provided with a third sealing inclined surface 10, and the lower end of the sealing ring 16 located on the lower side of the partition ring 15 is provided with a fourth sealing inclined surface 11, so that the structure of the seriously worn valve core 5 can be replaced in detail, and the cost is further controlled.
[0038] Embodiment 4
[0039] The embodiment is further optimized and refined on the basis of the structure of the valve stem 4 in the embodiment 3, and specifically:
[0040] The upper end of the valve stem 4 is provided with a sliding limiting part, the sliding limiting part is inserted into the middle part of the stuffing box 2 and can slide up and down, the shaft neck part 18 is arranged between the sliding limiting part and the shaft shoulder 13, and the guide inclined surfaces 19 are arranged at the joints of the shaft neck part 18, the shaft shoulder 13 and the sliding limiting part. In the embodiment, the upper end of the sliding limiting part of the valve stem 4 is also provided with a mounting hole, and the connecting piece 20 is arranged in the mounting hole. In the embodiment, the middle part of the stuffing box 2 is provided with stuffing, and the upper end is provided with a pressing plate (the stuffing and the pressing plate are not shown in the drawing, and conventional existing technical means can be used).
[0041] The utility model discloses in the control two water outlet passages's opening or close, and through the valve core 5 contact upper sealing ring seat and lower sealing ring seat, therefore only wear upper sealing ring seat and lower sealing ring seat in the use process, and in the maintenance, only need to replace upper sealing ring seat and lower sealing ring seat, can save the maintenance cost.
[0042] Further, in the description of the present application, unless otherwise specified, if the terms "a plurality of", "a plurality of", "a plurality of" are used, the meaning of two or more than two, "a plurality of", "a plurality of", "a plurality of" is one or more than one. In the description of the present application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "internal", "external" and other indicated orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, structure and operation, therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second", "third" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance.
[0043] The specific embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.
Claims
1. A three-way regulating valve, comprising a valve body, a stuffing box, a three-way connector, a valve stem and a valve core, the valve body is provided with a first flow channel and a second flow channel at its left and right ends respectively, the valve body is provided with a first mounting hole and a second mounting hole at its upper and lower ends respectively, the first mounting hole and the second mounting hole are respectively provided with the stuffing box and the three-way connector, the valve stem passes through the stuffing box and penetrates into the valve body, and the valve core is arranged at one end of the valve stem in the valve body, the first flow channel and the second flow channel, or the first flow channel and the three-way connector are controlled by the valve core, characterized in that: Also include a first seal seat ring and a second seal seat ring, the valve body middle part is provided with a communication hole which communicates the first flow channel and the second flow channel, the first seal seat ring is arranged at the communication hole, the second seal seat ring is arranged at the second mounting hole, and the valve core is arranged in the valve body between the first seal seat ring and the second seal seat ring.
2. A three-way control valve according to claim 1, characterized in that: The first seal seat ring and the second seal seat ring are respectively provided with a first seal slope and a second seal slope, and the valve core is provided with a third seal slope and a fourth seal slope, when the first flow channel and the second flow channel are disconnected by the valve core, the first seal slope on the first seal seat ring is fitted with the third seal slope arranged on the valve core, and when the first flow channel and the three-way connector are disconnected by the valve core, the second seal slope inside the second seal seat ring is fitted with the fourth seal slope arranged on the valve core.
3. A three-way control valve according to claim 2, characterized in that: The lower end of the communication hole is provided with a step, the lower end of the first seal seat ring is provided with a boss, the boss is abutted on the step of the communication hole, and a sealing washer is arranged between the boss and the step.
4. A three-way control valve according to claim 3, characterized in that: The middle part of the first seal seat ring is provided with a trumpet-shaped through hole, the middle part of the boss is provided with a cylindrical through hole, the trumpet-shaped through hole and the cylindrical through hole are communicated, and the first seal slope is arranged on the inner wall of the first seal seat ring at the joint of the trumpet-shaped through hole and the cylindrical through hole.
5. A three-way control valve according to claim 4, characterized in that: The lower end of the valve rod is provided with a shaft shoulder and a limiting plate, and the valve core is arranged on the valve rod between the shaft shoulder and the limiting plate.
6. A three-way control valve according to claim 5, characterized in that: The valve core includes a spacer ring and a sealing ring, the sealing ring is symmetrically arranged on the upper and lower sides of the spacer ring, the spacer ring is respectively provided with a clamping groove on the upper and lower sides, the sealing ring is arranged in the clamping groove, the upper end of the sealing ring on the upper side of the spacer ring is provided with a third seal slope, and the lower end of the sealing ring on the lower side of the spacer ring is provided with a fourth seal slope.
7. A three-way control valve according to claim 6, characterized in that: The upper end of the valve rod is provided with a sliding limiting part, the sliding limiting part is inserted into the middle part of the stuffing box and can slide up and down, a journal part is arranged between the sliding limiting part and the shaft shoulder, and a guide slope is arranged at the joint of the journal part, the shaft shoulder and the sliding limiting part.
8. A three-way control valve according to claim 7, characterized in that: The upper end of the sliding limiting part of the valve rod is also provided with a mounting hole, and a connecting piece is arranged in the mounting hole.
9. A three-way control valve according to claim 8, characterized in that: The middle part of the stuffing box is provided with a filler, and the upper end is provided with a pressing plate.