Stepless adjustable throttle valve

Abstract

The utility model relates to a stepless adjustable throttle valve which comprises a valve body, a valve cavity is arranged in the valve body, a water inlet channel and a water outlet channel are arranged on the valve body, and a flow control sheet and an adjusting sheet stacked on the flow control sheet are arranged in the valve cavity. A spiral groove is formed in the flow control piece, the inner edge or the outer edge of the spiral groove is arranged to be an adjusting edge, and the radius of the adjusting edge changes, so that the width of the spiral groove is gradually increased along the extending track of the spiral groove. A water inlet hole is formed in the adjusting piece, the adjusting piece and the flow control piece can rotate relatively, the centers of the adjusting piece and the flow control piece are coaxially positioned, in the rotating process, a through-flow area formed by matching of the water inlet hole and the adjusting edge of the spiral groove is gradually increased or decreased, stepless adjustment between 0 and the maximum flow is achieved, and the through-flow area is communicated with the water inlet channel. Accurate stepless regulation of the fluid flow is achieved, and the requirement of a high-precision flow control scene is met.

Description

Technical Field

[0001] This utility model relates to the field of fluid flow control equipment technology, specifically to a stepless adjustable flow valve. Background Technology

[0002] In fluid transport systems, precise control of fluid flow rate is a crucial step in ensuring product quality. Taking water quality conditioning systems as an example, beverages such as tea and coffee have strict requirements regarding the total dissolved solids (TDS) value of the water used. The ideal TDS value for coffee water is typically controlled between 80 and 120 PPM. If only reverse osmosis technology is used to treat tap water, the resulting purified water often has a significantly lower TDS value than this range, thus affecting the flavor and taste of the beverage. Therefore, it is necessary to mix purified water with other purified water to adjust to the target TDS value. This requires precise adjustment of the flow rate of one type of water to accurately control the TDS value of the mixture.

[0003] However, existing throttling valves have significant limitations in flow regulation. Traditional throttling valves typically employ fixed flow rates or stepped regulation modes, making it difficult to achieve stepless smooth regulation from 0 to maximum flow. Furthermore, their regulation accuracy is limited by mechanical structure, failing to meet the demands of high-precision flow control. Particularly in water quality regulation scenarios sensitive to flow fluctuations, the flow control errors of traditional throttling valves can easily lead to unstable mixed water quality, failing to meet the stringent water quality requirements of the beverage industry. Therefore, to address the shortcomings of existing throttling valves in terms of flow regulation accuracy and continuity, there is an urgent need to design a new type of throttling valve to meet the application requirements of precise and continuous flow regulation in fluid transport systems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by providing a stepless adjustable flow valve that enables precise stepless adjustment of fluid flow rate, thus meeting the needs of high-precision flow control scenarios.

[0005] The technical solution of this utility model is as follows: A stepless adjustable flow valve includes a valve body, a valve cavity is provided inside the valve body, an inlet channel and an outlet channel are provided on the valve body, and a flow control plate and an adjustment plate stacked thereon are provided in the valve cavity.

[0006] The flow control plate is provided with a spiral groove, and the inner or outer edge of the spiral groove is set as an adjustment edge. The radius of the adjustment edge changes so that the width of the spiral groove gradually increases along its extension trajectory.

[0007] The regulating plate is provided with a water inlet hole. The regulating plate and the flow control plate can rotate relative to each other and are positioned coaxially. During the rotation, the flow area formed by the water inlet hole and the spiral groove regulating edge gradually increases or decreases, realizing stepless adjustment between 0 and the maximum flow rate. The flow area is connected to the water inlet channel.

[0008] By adopting the above technical solution, this utility model can achieve precise stepless adjustment of the fluid inlet flow rate. When the fluid enters from the inlet channel, flows through the flow area to the valve chamber, and then exits from the outlet channel, during the adjustment process, as the adjusting plate rotates relative to the control plate, the fit between the inlet hole and the adjusting edge of the spiral groove changes, thereby altering the size of the flow area. This design not only achieves stepless flow rate adjustment but also ensures a continuous and smooth adjustment process, avoiding the sudden flow changes that may occur during adjustment in traditional throttle valves. This improves the stability and accuracy of flow control, meeting the needs of high-precision flow control scenarios. Furthermore, the coaxial positioning of the adjusting plate and the control plate prevents offset caused by the back-and-forth rotation of the adjusting plate.

[0009] A further feature of this invention is that the width of the water inlet hole is less than or equal to the maximum width of the spiral groove.

[0010] By adopting the above further settings, it can be ensured that the flow area can reach its maximum, thereby realizing the maximum adjustment range of the flow rate.

[0011] A further feature of this invention is that the adjusting plate is provided with a rotary control, which cooperates with the adjusting plate to form a water inlet cavity. The water inlet cavity is connected to the water inlet hole and the water outlet hole, and the water outlet hole is connected to the water outlet channel via a valve cavity.

[0012] With the aforementioned further design, users can easily rotate the regulating disc using a rotary control without directly contacting the fluid or entering the valve body, thus improving operational safety and convenience. The inlet chamber design ensures smooth water flow into and out of the outlet. The entire process is efficient and smooth, significantly improving water utilization and regulation efficiency.

[0013] A further feature of this invention is that the water outlet is located on the side wall of the adjusting plate or the rotary control, and there are multiple water outlets arranged in an oblique shape.

[0014] With the aforementioned further design, the angled outlet design allows for a smoother flow pattern as water exits the inlet chamber, reducing water impact and turbulence, thereby lowering noise levels. Multiple outlets effectively disperse the water flow, preventing uneven pressure and unstable flow caused by excessive concentration of water. Simultaneously, multiple outlets improve water output efficiency, ensuring rapid and uniform water flow out of the inlet chamber, further enhancing water utilization and adjustment precision.

[0015] A further feature of this invention is as follows: the valve body includes a valve shell A and a valve cap B located at the upper end of the valve shell. The valve shell A and the valve cap B cooperate to form the valve cavity. The regulating plate and the flow control plate are stacked vertically inside the valve shell. The water inlet channel is located at the lower end of the valve shell, and the water outlet channel is located on the side wall of the valve shell.

[0016] With the above-described further design, the regulating vane and flow control vane are arranged vertically inside valve body A. This layout facilitates precise control of the water flow. Furthermore, the optimized placement of the inlet and outlet channels ensures efficient and smooth flow regulation.

[0017] A further feature of this invention is that the valve cap B presses the rotary control, adjusting plate, and flow control plate against the valve body A in sequence, and the flow control plate is circumferentially positioned with the valve body A by the insertion of the protrusion A and the groove A; the rotary control and the adjusting plate are circumferentially rotated synchronously by the insertion of the protrusion B and the groove B.

[0018] With the further configuration described above, valve cap B not only seals the valve cavity but also, through its structural features, effectively fixes and positions the rotary control, adjusting plate, and flow control plate. The flow control plate is fitted to valve body A via protrusion A and groove A, ensuring its stable position within the valve body and preventing displacement or swaying during water flow adjustment, thus guaranteeing the accuracy and reliability of the adjustment. Simultaneously, the rotary control and adjusting plate are fitted together via protrusion B and groove B, achieving synchronous circumferential rotation. This means that users can easily control the adjusting plate and thus adjust the water flow by rotating the rotary control.

[0019] A further feature of this invention is that the valve cap B is fitted onto the valve body A and forms a snap-fit ​​connection.

[0020] With the aforementioned further design, the valve cap, through its snap-fit ​​structure, can fit tightly against the valve body, effectively preventing loosening or detachment caused by water flow impact or external forces. Furthermore, the snap-fit ​​connection facilitates user disassembly and maintenance of the valve cap when needed, enhancing the product's practicality and convenience.

[0021] A further feature of this invention is that the valve cap B has an internal cavity B, and the rotary control has a rod extending upward through the cavity. The rotary control and the valve cap B form a sealed fit, and the valve cap B and the valve body A form a sealed connection.

[0022] With the further design described above, the cavity B provides suitable space for the rod of the rotary control to pass through, ensuring stable installation of the rotary control within the valve cap. The sealing fit between the rotary control and the valve cap effectively prevents water leakage from the gap between them, ensuring the overall sealing effect of the valve; at the same time, the sealing connection between the valve cap and the valve body further improves the valve's leakage performance.

[0023] A further feature of this invention is that the valve cap B is provided with a rotating cap, which rotates synchronously in the circumferential direction with the rotating control via a protrusion C and a groove C; and is engaged by a clip structure, which includes a clip protrusion A and a clip protrusion B located on the rotating cap and the rotating control respectively, and the clip protrusion A and the clip protrusion B engage with each other to prevent the rotating cap from being pulled out of the rotating control.

[0024] With the further design described above, the screw cap not only increases the user's comfort during operation but also achieves circumferential synchronous rotation of the screw cap and the control knob through the interlocking structure of protrusion C and groove C. This design allows the user to directly rotate the control knob when rotating the screw cap, thereby simplifying the operation process and improving efficiency. Simultaneously, the interlocking of protrusions A and B also provides a certain degree of anti-dislodgement, effectively preventing the screw cap from accidentally falling off during rotation, further enhancing the product's reliability and safety.

[0025] A further feature of this invention is that the upper surface of the valve cap B is provided with multiple scales B for indicating the fluid flow rate, the multiple scales B are distributed in a circular interval, and the cap is provided with an indicator window that allows different scales to be exposed.

[0026] By further configuring the valve cap, multiple graduations indicating fluid flow rates are set on its upper surface. The indicator window on the valve cap changes to different graduations as the cap rotates, thus achieving precise adjustment and display of fluid flow. This design not only improves the product's practicality and convenience but also enhances the user experience, allowing users to more intuitively understand and control fluid flow during operation. Attached Figure Description

[0027] Figure 1 This is a structural diagram of a specific embodiment of the present utility model;

[0028] Figure 2 for Figure 1 Cross-sectional view;

[0029] Figure 3 for Figure 1 Exploded view;

[0030] Figure 4 This is a structural diagram of the swivel cap according to a specific embodiment of the present utility model;

[0031] Figure 5 This is a structural diagram of the valve cap according to a specific embodiment of the present utility model;

[0032] Figure 6 This is a structural diagram of the valve shell according to a specific embodiment of the present utility model;

[0033] Figure 7 This is a diagram showing the assembly of the rotary control, adjusting plate, and flow control plate in a specific embodiment of this utility model;

[0034] Figure 8 for Figure 7 Cross-sectional view;

[0035] Figure 9 This is a structural diagram of the adjusting plate in a specific embodiment of the present invention;

[0036] Figure 10 This is a structural diagram of the flow control chip in a specific embodiment of the present invention;

[0037] Figure 11 This is a diagram showing the zero flow rate state in a specific embodiment of this utility model, where the arrows indicate the direction in which the inlet hole rotates to increase the flow rate;

[0038] Figure 12 This is a diagram showing the maximum flow rate in a specific embodiment of the present invention, where h is the maximum width of the spiral groove. Detailed Implementation

[0039] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. 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.

[0040] like Figure 1-12 As shown, the present invention provides a stepless adjustable flow valve, including a valve body 1, a valve cavity 11 inside the valve body 1, an inlet channel 12 and an outlet channel 13 on the valve body 1, and a flow control plate 2 and an adjustment plate 3 stacked thereon inside the valve cavity 11.

[0041] The flow control plate 2 is provided with a spiral groove 21. The inner edge or outer edge of the spiral groove 21 is set as an adjustment edge 211. The radius of the adjustment edge 211 changes so that the width of the spiral groove 21 gradually increases along its extension trajectory. The inner edge of the spiral groove 21 is set as the adjustment edge 111, and its inner edge extends inward. The outer edge of the spiral groove 21 is set as the adjustment edge 111, and its outer edge extends outward.

[0042] The regulating plate 3 is provided with a water inlet 31. The regulating plate 3 and the flow control plate 2 can rotate relative to each other and are coaxially positioned. Their centers are connected by a rotating shaft 10. During rotation, the flow area a (i.e., the overlapping and communicating area of ​​the water inlet 21 and the spiral groove regulating edge 211) formed by the water inlet 31 and the spiral groove gradually increases or decreases, realizing stepless adjustment between 0 and the maximum flow rate. The flow area a is connected to the water inlet channel 12. The width of the water inlet 31 is less than or equal to the maximum width of the spiral groove 21.

[0043] Specifically, the adjusting plate 3 is provided with a rotary control 4, which cooperates with the adjusting plate 3 to form a water inlet chamber b. The water inlet chamber b is connected to the water outlet b1 and the water inlet 31. The water outlet b1 is connected to the water inlet channel 12 via the valve chamber 11. The water outlet b1 is located on the side wall of the adjusting plate 3 or the rotary control 4, and there are multiple water outlets b1 arranged in an oblique hole shape. Of course, the water outlet can also be located on the upper part of the rotary control. The water inlet is located at the bottom of the adjusting plate. The rotary control can be integrally formed with the adjusting plate. The water inlet is located at the bottom of the water inlet chamber.

[0044] Specifically, the valve body 1 includes a valve shell 1A and a valve cap 1B located at the upper end of the valve shell. The valve shell 1A and the valve cap 1B cooperate to form the valve cavity 11. The adjusting plate 3 and the flow control plate 2 are arranged in a stacked manner inside the valve shell 1A. The water inlet channel 12 is located at the lower end of the valve shell 1A, and the water outlet channel 13 is located on the side wall of the valve shell 1A. Of course, the positions of the water inlet channel and the water outlet channel can be interchanged. The valve cap 1B presses the rotating control 4, the adjusting plate 3, and the flow control plate 2 against the valve shell 1A in sequence. The flow control plate 2 and the valve shell 1A are circumferentially positioned by the insertion of the protrusion A51 and the groove A52. The rotating control 4 and the adjusting plate 3 are circumferentially rotated synchronously by the insertion of the protrusion B61 and the groove B62. The valve cap 1B is inserted and installed on the valve shell 1A to form a snap-fit ​​connection. The valve cap 1B has a locking block 1B3 on its outer periphery, and the valve shell 1A has a locking slot 1A1 for the locking block to be inserted. Other methods, such as screw connection, can also be used. The valve cap 1B has a cavity 1B1 inside, and the rotary control 4 has a rod 41 that extends upward through the cavity. The rotary control 4 and the valve cap 1B are sealed together by a sealing ring. The valve cap 1B and the valve body 1A are sealed together by a sealing ring. The flow control plate 2 is also sealed to the valve wall by a sealing ring.

[0045] Specifically, the valve cap 1B is provided with a rotating cap 6. The rotating cap 6 and the rotating control 4 are circumferentially rotated synchronously through the insertion of a protrusion C71 and a groove C72; and are engaged by a clamping structure, which includes a locking protrusion A81 and a locking protrusion B82 located on the rotating cap 6 and the rotating control 4 respectively. The locking protrusions A81 and B82 engage with each other to prevent the rotating cap 6 from being pulled out of the rotating control 4. The locking protrusions can be protrusions, protrusions strips, or protrusions rings. The protrusion C is located on the rotating cap and the groove C is located on the rotating control, or the protrusion C is located on the rotating control and the groove C is located on the rotating cap. The upper end face of the valve cap 1B is provided with multiple scales 1B2 for indicating the fluid flow rate. The multiple scales 1B2 are distributed circumferentially. The rotating cap 6 is provided with an indicator window 63 that allows different scales to be exposed. Alternatively, the scales can be provided on the outer circumference of the valve body, and the rotating cap 6 can be provided with arrows indicating the scales. The outer circumference of the rotating cap 6 can be provided with anti-slip texture.

[0046] The working principle of this utility model:

[0047] The fluid enters through the inlet channel 12, then passes through the flow area a, the inlet chamber b and the outlet hole b1 in sequence before entering the valve chamber 11, and then flows out through the outlet channel 13.

[0048] When the user needs to adjust the fluid flow rate, they only need to rotate the outer cap 6. The cap 6, through the mating structure of the protrusion C71 and the groove C72, rotates synchronously with the control device 4 in a circumferential direction. As the cap 6 rotates, the control device 4 drives the adjusting plate 3 to rotate relative to the flow control plate 2. During this process, the flow area a formed by the water inlet 31 on the adjusting plate 3 and the adjusting edge 211 of the spiral groove on the flow control plate 2 gradually increases or decreases, thereby realizing stepless adjustment of the fluid flow rate. When increasing the flow rate from 0, the water inlet slowly rotates from the adjusting edge side into the corresponding area of ​​the spiral groove. At this time, the overlapping and connecting area with the spiral groove, i.e., the flow area, gradually increases, and the fluid flow rate also increases smoothly. Conversely, when the adjusting plate rotates in the opposite direction, the water inlet slowly moves away from the corresponding area of ​​the spiral groove, and after it is completely offset, the flow rate is 0.

[0049] Meanwhile, users can accurately understand the current fluid flow rate by observing the scale 1B2 on the upper surface of the valve cap 1B, which is aligned with the indicator window 63 on the rotary cap 6.

[0050] like Figure 11 As shown, when the outer edge of the spiral groove is set as the adjusting edge, when the water inlet rotates, the inner edge of the water inlet is aligned with or offset from the outer edge of the spiral groove, which can completely block the flow.

[0051] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0052] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

Claims

1. A stepless adjustable flow valve, comprising a valve body (1), a valve cavity (11) provided inside the valve body (1), and an inlet channel (12) and an outlet channel (13) provided on the valve body (1), characterized in that: The valve cavity (11) is provided with a flow control plate (2) and an adjustment plate (3) stacked on it; The flow control plate (2) is provided with a spiral groove (21), and the inner edge or outer edge of the spiral groove (21) is set as an adjustment edge (211). The radius of the adjustment edge (211) changes so that the width of the spiral groove (21) gradually increases along its extension trajectory. The regulating plate (3) is provided with a water inlet hole (31). The regulating plate (3) and the flow control plate (2) can rotate relative to each other and are positioned coaxially. During the rotation, the flow area (a) formed by the water inlet hole (31) and the spiral groove regulating edge (211) gradually increases or decreases, realizing stepless adjustment between 0 and the maximum flow rate. The flow area (a) is connected to the water inlet channel (12).

2. The steplessly adjustable flow valve according to claim 1, characterized in that: The width of the water inlet (31) is less than or equal to the maximum width of the spiral groove (21).

3. The steplessly adjustable flow valve according to claim 1 or 2, characterized in that: The regulating plate (3) is provided with a rotary control (4), which cooperates with the regulating plate (3) to form a water inlet cavity (b). The water inlet cavity (b) is connected to the water inlet hole (31) and the water outlet hole (b1). The water outlet hole (b1) is connected to the water outlet channel (13) through the valve cavity (11).

4. The steplessly adjustable flow valve according to claim 3, characterized in that: The water outlet (b1) is located on the side wall of the adjusting plate (3) or the rotary control (4), and there are multiple water outlets (b1) arranged in an oblique shape.

5. The steplessly adjustable flow valve according to claim 3, characterized in that: The valve body (1) includes a valve shell (1A) and a valve cap (1B) located at the upper end of the valve shell. The valve shell (1A) and the valve cap (1B) cooperate to form the valve cavity (11). The regulating plate (3) and the flow control plate (2) are stacked vertically inside the valve shell (1A). The water inlet channel (12) is located at the lower end of the valve shell (1A), and the water outlet channel (13) is located on the side wall of the valve shell (1A).

6. The steplessly adjustable flow valve according to claim 5, characterized in that: The valve cap (1B) presses the rotary control (4), the adjusting plate (3) and the flow control plate (2) against the valve body (1A) in sequence. The flow control plate (2) and the valve body (1A) are circumferentially positioned by the insertion of the protrusion A (51) and the groove A (52). The rotary control (4) and the adjusting plate (3) are circumferentially rotated synchronously by the insertion of the protrusion B (61) and the groove B (62).

7. The steplessly adjustable flow valve according to claim 5, characterized in that: The valve cap (1B) is fitted onto the valve body (1A) and forms a snap-fit ​​connection.

8. The steplessly adjustable flow valve according to claim 5, characterized in that: The valve cap (1B) has an internal cavity (1B1), and the rotary control (4) has a rod (41) extending upward through the cavity. The rotary control (4) and the valve cap (1B) form a sealed fit, and the valve cap (1B) and the valve body (1A) form a sealed connection.

9. The steplessly adjustable flow valve according to claim 5, characterized in that: The valve cap (1B) is provided with a rotating cap (6). The rotating cap (6) and the rotating control (4) are connected by a protrusion C (71) and a groove C (72) to achieve circumferential synchronous rotation. The valve cap (6) is connected by a clip structure, which includes a clip protrusion A (81) and a clip protrusion B (82) located on the rotating cap (6) and the rotating control (4) respectively. The clip protrusion A (81) and the clip protrusion B (82) engage with each other to prevent the rotating cap (6) from being pulled out of the rotating control (4).

10. The steplessly adjustable flow valve according to claim 9, characterized in that: The upper surface of the valve cap (1B) is provided with multiple scales (1B2) for indicating the fluid flow rate. The multiple scales (1B2) are distributed in a circular interval. The valve cap (6) is provided with an indicator window (63) that allows different scales to be exposed.

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